Integrated water purification method

Abstract

The invention provides an integrated water purification method which comprises the following steps: a first impeller and a second impeller rotate to generate negative pressure in a mixing chamber; air enters the mixing chamber through the air inlet main pipe and is mixed with water under the action of the first impeller to form pre-steam-water mixed liquid; pre-steam-water mixed liquid enters the inner wall of an upper cover plate under the action of a first impeller and is cut by a third cutting body, so that more oxygen in the pre-steam-water mixed liquid is dissolved in water; meanwhile, the pre-steam-water mixed liquid moves downwards and outwards after being reflected by the upper cover plate and collides, cuts and is mixed with the pre-steam-water mixed liquid which does not enter the inner wall of the upper cover plate, so that water drops and bubbles become finer and finer, and more oxygen is dissolved in water; the pre-steam-water mixed liquid serves as power fluid of a second impeller for aeration, and steam-water mixed liquid is formed; and the steam-water mixed liquid flows out from a flow channel of the mixing chamber under the action of the second impeller to oxygenate the surrounding water body. According to the integrated water purification method provided by the invention, the aeration rate and the oxygen dissolving efficiency are effectively improved.

Description

Technical Field

[0001] The invention belongs to the technical field of water treatment, and in particular relates to an integrated water purification method. Background Art

[0002] As the sanitary requirements for rural residents' domestic water use become higher and higher, integrated water purification equipment purifies surface water and groundwater. Aeration devices are one of the indispensable devices of integrated water purification equipment. However, the aeration devices of the prior art have the problem of poor aeration effect during use. The aeration effect and dissolved oxygen efficiency determine the performance of integrated water purification equipment. In the existing centrifugal aerator, the fluid enters the mixing chamber from the bottom, and the high-speed rotating impeller forms a negative pressure in the mixing chamber, so that the air on the water surface enters the mixing chamber and forms a soda-water mixture with the fluid body. The soda-water mixture is then ejected from the surrounding flow channel at high speed to oxygenate the surrounding water body. There are the following limitations in using existing submersible centrifugal aerators for water purification: 1. The amount of air entering the water body is limited, resulting in poor dissolved oxygen effect; 2. The movement path of the soda-water mixture is limited, resulting in poor oxygen transfer effect; 3. The water droplets and bubbles are large, resulting in poor dissolved oxygen effect. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an integrated water purification method to effectively improve the aeration volume and dissolved oxygen efficiency.

[0004] In order to solve the above technical problems, an embodiment of the present invention provides an integrated water purification method, comprising the following steps: Step 10, the first impeller and the second impeller rotate to generate negative pressure in the mixing chamber; the air above the water surface enters the mixing chamber through the air intake pipe, and is mixed with the water in the mixing chamber under the action of the first impeller to form a pre-steam-water mixture; Step 20, the pre-steam-water mixture is incident on the inner wall of the upper cover plate under the action of the first impeller, and the third cutting body cuts the pre-steam-water mixture, so that more oxygen in the pre-steam-water mixture is dissolved in the water; at the same time, after the pre-steam-water mixture is cut, it moves downward and outward after being reflected by the upper cover plate, and collides, cuts, and mixes with the pre-steam-water mixture below that has not yet been incident on the inner wall of the upper cover plate, so that water droplets and bubbles become smaller and denser, and more oxygen is dissolved in the water; the reflected pre-steam-water mixture above drives part of the incident pre-steam-water mixture below to move downward and outward, and the incident pre-steam-water mixture below that has not yet been incident on the inner wall of the upper cover plate continues to flow to the inner wall of the upper cover plate with part of the reflected pre-steam-water mixture above, and moves downward and outward after being reflected and cut by the upper cover plate; Step 30, the pre-steam-water mixture is used as the power fluid of the second impeller and is mixed with the air entering the mixing chamber through the intake branch pipe to form a steam-water mixture; Step 40, the soda-water mixture flows out from the flow channel of the mixing chamber under the action of the second impeller to oxygenate the surrounding water.

[0005] As a further improvement of the embodiment of the present invention, in step 20, air enters the air ring through the air inlet branch pipe, and then flows downward into the mixing chamber through the air outlet hole; in the process of air moving from top to bottom, the pre-steam-water mixture sprayed in the direction of the upper cover plate formed by the first impeller around the first impeller cuts each other, so that the water droplets and bubbles are cut smaller and denser, so as to improve the dissolved oxygen efficiency.

[0006] As a further improvement of the embodiment of the present invention, the step between step 30 and step 40 further includes: Step 31, the first cutting body at the bottom of the first impeller and the second cutting body at the top of the second impeller cut the soda-water mixture entering between the two impellers; the first cutting body cuts above the soda-water mixture to cut the water droplets and bubbles into smaller and denser ones, and the soda-water mixture is constantly squeezed and moves downward during the outward flow, thereby increasing the dissolved oxygen content of the water body below; the second cutting body cuts below the soda-water mixture to cut the water droplets and bubbles into smaller and denser ones, and the soda-water mixture is constantly squeezed and moves upward during the outward flow, thereby increasing the dissolved oxygen content of the water body above, thereby improving the dissolved oxygen efficiency; the soda-water mixture squeezed downward and the soda-water mixture squeezed upward are mixed again to dissolve more oxygen in the water; the soda-water mixture between the two impellers flows outward to above the second impeller, and the second cutting body at the top of the second impeller cuts below the soda-water mixture again to further make the water droplets and bubbles smaller and denser.

[0007] As a further improvement of the embodiment of the present invention, the step 31 further includes: The center of the first cutting body is not on the axis of the first impeller, so the smaller and denser soda-water mixture produced by the first cutting body is distributed at different radial positions in the circumferential direction, and the radial position of the cut soda-water mixture is continuously changed. While changing the radial position, the flow of the soda-water mixture is strengthened, and the soda-water mixture with a lower oxygen content is continuously cut again, so that more water droplets and bubbles are cut into smaller and denser ones, and more oxygen is transferred into the water; the two cutting bodies are not concentric, and when the first cutting body at the bottom of the first impeller cuts the soda-water mixture, a smaller and denser soda-water mixture with different centers is formed, and when the second cutting body at the top of the second impeller cuts the soda-water mixture, a concentric smaller and denser soda-water mixture is formed; when the two soda-water mixtures flow outward, they are continuously subjected to mutual rotation. Interaction and cutting, once again carry out the oxygen transfer process, continuously form new soda-water mixture with slightly different oxygen content in all directions, redistribute and flow the oxygen in the new soda-water mixture, increase the oxygen movement path and continuously change the flow direction, so as to improve the oxygen transfer efficiency; the diameter of the first impeller is smaller than the diameter of the second impeller, when the first cutting body throws the cut soda-water mixture outward, asymmetric soda-water mixture in different circumferential and radial directions is formed, creating conditions for the oxygen transfer again, the second cutting body beyond the diameter of the first impeller cuts the asymmetric soda-water mixture above the second impeller, improves the cutting effect in different directions, cuts the water droplets and bubbles below the soda-water mixture into smaller and denser ones, transfers more oxygen into the water, and improves the oxygen transfer rate again.

[0008] As a further improvement of the embodiment of the present invention, in the step 20, the outer diameter of the blades of the first impeller gradually increases from top to bottom, and the pre-steam-water mixture generated by the first impeller and flowing in the direction of the upper cover plate has a flow rate of the pre-steam-water mixture at the bottom that is greater than the flow rate of the pre-steam-water mixture at the top; the incident pre-steam-water mixture at the top is reflected to form a reflected pre-steam-water mixture that is sprayed downward and outward. Since the speed of the incident pre-steam-water mixture at the bottom is greater than the speed of the incident pre-steam-water mixture at the top, it is also greater than the speed of the reflected pre-steam-water mixture at the top. Therefore, the incident pre-steam-water mixture at the bottom drives most of the reflected pre-steam-water mixture at the top, and then is sprayed onto the third cutting groove for cutting, and a new reflected pre-steam-water mixture is formed after being cut.

[0009] Compared with the prior art, the technical solution of the present invention has the following beneficial effects: the present invention provides an integrated water purification method, which performs aeration and water purification through an aerator arranged in a pool body, and the fluid flows into the mixing chamber from a water inlet arranged at the top of the mixing chamber, and the first impeller and the second impeller rotate in the mixing chamber, and a negative pressure is formed in the mixing chamber, and the air above the liquid surface enters the mixing chamber from the top of the mixing chamber through the air inlet main pipe, and the air just entering the mixing chamber is mixed with the fluid under the action of the first impeller to form a pre-steam-water mixture. The pre-steam-water mixture flows toward the upper cover under the action of the first impeller, and the third cutting body on the inner wall of the upper cover cuts the pre-steam-water mixture, so that more oxygen in the pre-steam-water mixture is dissolved in the water; at the same time, after being cut, the pre-steam-water mixture moves downward and outward after being reflected by the upper cover, and collides, cuts, and mixes with the pre-steam-water mixture below that has not yet been incident on the inner wall of the upper cover, so that the water droplets and bubbles become smaller and denser, so that more oxygen is dissolved in the water; the reflected pre-steam-water mixture above drives part of the incident pre-steam-water mixture below to move downward and outward, and the incident pre-steam-water mixture below that has not yet been incident on the inner wall of the upper cover continues to flow toward the inner wall of the upper cover with part of the reflected pre-steam-water mixture above, and moves downward and outward after being reflected by the upper cover, further improving the dissolved oxygen efficiency. The pre-steam-water mixture acts as the power fluid of the second impeller in the mixing chamber, and is mixed again with the air input from the intake branch pipe to form a steam-water mixture, and a centrifugal aeration process is carried out. This can effectively increase the aeration volume and dissolved oxygen efficiency, ensure the dissolved oxygen required for the water purification process, and improve the water purification effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0011] Figure 1 is a schematic structural diagram of an aerator used in the integrated water purification method according to an embodiment of the present invention; Figure 2 is a schematic structural diagram of a mixing chamber in an embodiment of the present invention; Figure 3 is a schematic structural diagram of a first impeller in an embodiment of the present invention; Figure 4 is a schematic structural diagram of a second impeller in an embodiment of the present invention; Figure 5 Schematic diagram of the mixing effect on one side of the mixing chamber in an embodiment of the present invention.

[0012] The figure includes: a submersible electric pump 1, a rotor shaft 11, a mixing chamber 2, a first mixing chamber 21, a second mixing chamber 22, a water inlet 23, an upper cover plate 24, a third cutting body 25, a bottom end plate 26, a mounting hole 27, a flow channel 28, a main body 29, a second impeller 3, a second cutting body 31, a top plate 32, a second blade 33, a second hub 34, a first impeller 4, a first cutting body 41, a bottom plate 42, a first blade 43, a first hub 44, an intake branch pipe 5, a second regulating valve 6, an intake main pipe 7, a first regulating valve 8, an air ring 9, an air outlet 91, a first incident premixed liquid S1, a second incident premixed liquid S2, a first reflected premixed liquid S1', and a second reflected premixed liquid S2'. DETAILED DESCRIPTION

[0013] The technical solution of the present invention is described in detail below with reference to the accompanying drawings.

[0014] The embodiment of the present invention provides an integrated water purification method, using an aerator, such as Figure 1 As shown, the aerator includes a submersible electric pump 1, a mixing chamber 2, a first impeller 4, a second impeller 3, an air intake branch pipe 5 and an air intake main pipe 7. The submersible electric pump 1 is arranged on a base at the bottom of the pool, and the mixing chamber 2 is arranged above the submersible electric pump 1. The rotor shaft of the submersible electric pump 1 extends into the mixing chamber 2, and is connected to the second impeller 3 and the first impeller 4 in the mixing chamber 2. The first impeller 4 is located above the second impeller 3, and there is a certain distance between the first impeller and the second impeller 3. A water inlet 23 is provided at the top of the mixing chamber 2, and the first impeller is close to the water inlet 23. The air intake end of the air intake main pipe 7 is located above the liquid surface, and the air outlet end is located at the water inlet of the mixing chamber. One end of the air intake branch pipe 5 is connected to the air intake main pipe 7, and the other end is connected to the mixing chamber. Among them, the first impeller 4 and the second impeller 3 are both centrifugal impellers.

[0015] like Figure 2 As shown, the mixing chamber 2 includes a body 29 and an upper cover plate 24. The body 29 is cylindrical, with an upper end open and a lower end closed, and a flow channel 28 is provided in the circumferential direction. A mounting hole 27 for the rotor shaft of the submersible electric pump to pass through is provided on the bottom end plate 26 of the body. The upper cover plate 24 is arranged on the upper end opening of the body 29. The upper cover plate is a truncated cone with a small top and a large bottom, and a water inlet 23 is formed at the top of the upper cover plate. The inner cavity of the upper cover plate is a first mixing chamber 21, and the first impeller 4 is located in the first mixing chamber 21. The inner cavity of the body 29 is a second mixing chamber 22, and the second impeller 3 is located in the second mixing chamber 22. Preferably, the diameter of the first impeller 4 is 1 / 8 to 1 / 3 of the diameter of the second impeller 3. Preferably, the inner wall of the upper cover plate 24 is provided with a third cutting body 25. The third cutting body 25 includes a plurality of third annular cutting grooves arranged at intervals from top to bottom.

[0016] The method of this embodiment includes: Step 10, the first impeller 4 and the second impeller 3 rotate to generate negative pressure in the mixing chamber 2; the air above the water surface enters the mixing chamber through the air intake pipe 7, and is mixed with the water in the mixing chamber under the action of the first impeller to form a pre-steam-water mixture.

[0017] Step 20, the pre-steam-water mixture is incident on the inner wall of the upper cover plate 24 under the action of the first impeller 4, and the third cutting body 25 cuts the pre-steam-water mixture, so that more oxygen in the pre-steam-water mixture is dissolved in the water; at the same time, after the pre-steam-water mixture is cut, it moves downward and outward after being reflected by the upper cover plate, and collides, cuts and mixes with the pre-steam-water mixture below that has not yet been incident on the inner wall of the upper cover plate, so that the water droplets and bubbles become smaller and denser, and more oxygen is dissolved in the water; the reflected pre-steam-water mixture above drives part of the incident pre-steam-water mixture below to move downward and outward, and the incident pre-steam-water mixture below that has not yet been incident on the inner wall of the upper cover plate continues to flow toward the inner wall of the upper cover plate with part of the reflected pre-steam-water mixture above, and moves downward and outward after being reflected and cut by the upper cover plate.

[0018] like Figure 5 As shown, the first incident pre-steam-water mixture S1 above is cut by the third cutting body 25 to form a first reflected pre-steam-water mixture S1', and the first reflected pre-steam-water mixture moves downward and outward, collides, cuts and mixes with the second incident pre-steam-water mixture S2 below, and cuts the water droplets and bubbles into smaller and denser ones. Then, the first reflected pre-steam-water mixture S1' will continue to move downward and outward with part of the second incident pre-steam-water mixture S2, and the second incident pre-steam-water mixture S2 will carry part of the first reflected pre-steam-water mixture S1' and be cut by the third cutting body again, and cut the water droplets and bubbles into smaller and denser ones to form a second reflected pre-steam-water mixture S2', thereby continuously forming a third reflected pre-steam-water mixture and a fourth reflected pre-steam-water mixture... that flow downward and outward.

[0019] Step 30, the pre-steam-water mixture is used as the power fluid of the second impeller 3, and is mixed with the air entering the mixing chamber through the intake branch pipe 5 to form a steam-water mixture.

[0020] In step 40, the soda-water mixture flows out from the flow channel 28 of the mixing chamber under the action of the second impeller to oxygenate the surrounding water.

[0021] Preferably, a second regulating valve 6 is provided on the air inlet branch pipe 5, and a first regulating valve 8 is provided between the connection between the air inlet main pipe 7 and the air inlet branch pipe 5 and the air outlet. The first regulating valve 8 is used to adjust the amount of air entering the mixing chamber 2 through the air inlet main pipe 7, thereby determining the optimal aeration amount formed by the first impeller. The second regulating valve 6 is used to adjust the amount of air entering the mixing chamber 2 through the air inlet branch pipe, thereby determining the rated aeration amount of the entire aerator.

[0022] Preferably, an air ring 9 is provided in the mixing chamber, and the air ring 9 is located above the first impeller. The distance between the bottom end of the air ring 9 and the top end of the first impeller 4 is 5 to 30 mm. The air ring 9 is a hollow annular tube, and a plurality of air outlet holes 91 are provided around the bottom of the air ring. The outlet end of the air inlet branch pipe is inserted into the air ring 9, and the air inlet branch pipe is connected to the mixing chamber through the air ring.

[0023] In step 20, air enters the air ring 9 through the air inlet branch pipe 5, and then flows downward into the mixing chamber through the air outlet 91; during the movement of air from top to bottom, the pre-steam-water mixture sprayed in the direction of the upper cover plate 24 formed by the first impeller around the first impeller cuts each other, so that the water droplets and bubbles are cut smaller and denser, so as to improve the oxygen dissolution efficiency.

[0024] As a preferred example, Figure 3 As shown, the first impeller 4 includes a first hub 44, first blades 43 and a bottom plate 42. The first hub 44 is connected to the rotor shaft of the submersible electric pump through a first axial hole provided through the upper and lower ends thereof. The first blades 43 are arranged circumferentially along the first hub 44. The bottom plate 42 is arranged at the bottom end of the first hub 44 and below the first blades 43. A first cutting body 41 is provided on the lower surface of the bottom plate 42. Preferably, the first cutting body 41 includes a plurality of concentrically arranged first annular cutting grooves.

[0025] like Figure 4 As shown, the second impeller 3 includes a second hub 34, second blades 33 and a top plate 32. The second hub 34 is connected to the rotor shaft of the submersible electric pump through a second axial hole provided through the upper and lower ends thereof. The second blades 33 are arranged circumferentially along the second hub 34. The top plate 32 is arranged at the top end of the second hub 34 and above the second blades 33. A second cutting body 31 is provided on the upper surface of the top plate 32. Preferably, the second cutting body 31 includes a plurality of concentrically arranged second annular cutting grooves.

[0026] Also included between step 30 and step 40: Step 31, the cutting bodies on the opposite end surfaces of the first impeller 4 and the second impeller 3 cut the soda-water mixture entering between the two impellers. The first cutting body cuts above the soda-water mixture, cutting the water droplets and bubbles into smaller and denser ones. During the outward flow of the soda-water mixture, it is constantly squeezed and moves downward, increasing the dissolved oxygen content of the water body below; the second cutting body cuts below the soda-water mixture, cutting the water droplets and bubbles into smaller and denser ones. During the outward flow of the soda-water mixture, it is constantly squeezed and moves upward, increasing the dissolved oxygen content of the water body above, thereby improving the dissolved oxygen efficiency. The soda-water mixture squeezed downward and the soda-water mixture squeezed upward are cut and mixed with each other again, so that more oxygen is dissolved in the water. The soda-water mixture between the two impellers flows outward to the top of the second impeller, and the second cutting body at the top of the second impeller cuts below the soda-water mixture again, further making the water droplets and bubbles smaller and denser. The soda-water mixture is mixed again with the air entering the mixing chamber, transferring more oxygen into the water to improve the dissolved oxygen efficiency.

[0027] Preferably, the center of the first annular cutting groove is not located on the axis of the first hub 44 , and the center of the second annular cutting groove is located on the axis of the second hub 34 .

[0028] In the above preferred embodiment, the first cutting body 41 of the eccentric structure and the second cutting body 31 of the concentric structure cut the soda-water mixture between the two impellers, the first cutting body cuts above the soda-water mixture, and the second cutting body cuts below the soda-water mixture, cutting the water droplets and bubbles into smaller and denser ones to improve the dissolved oxygen efficiency.

[0029] Step 31 includes: The soda-water mixture between the two impeller covers is cut by two eccentric cutting grooves. The first cutting groove cuts above the soda-water mixture, cutting the water droplets and bubbles into smaller and denser ones. During the outward flow of the soda-water mixture, the water droplets and bubbles are constantly squeezed and moved downward, increasing the dissolved oxygen content of the water body below. The second cutting groove cuts below the soda-water mixture, cutting the water droplets and bubbles into smaller and denser ones. During the outward flow of the soda-water mixture, the water droplets and bubbles are constantly squeezed and moved upward, increasing the dissolved oxygen content of the water body above. The two eccentric downward and upward soda-water mixtures merge into each other, while constantly changing the circumferential and radial positions of the soda-water mixture, so that the soda-water mixture between the two impellers is mixed and distributed again, transferring more oxygen to the water to improve the dissolved oxygen efficiency.

[0030] Since the center of the first cutting body 41 is not on the axis of the first impeller, the smaller and denser soda-water mixture produced by the first cutting body is distributed at different radial positions in the circumferential direction, and the radial position of the cut soda-water mixture is continuously changed. While changing the radial position, the flow of the soda-water mixture is strengthened, and the soda-water mixture with a lower oxygen content is continuously cut again, so that more water droplets and bubbles are cut into smaller and denser ones, and more oxygen is transferred into the water.

[0031] Since the two cutting bodies are not concentric, the first cutting body 41 at the bottom of the first impeller forms a non-concentric smaller and more dense soda-water mixture when cutting the soda-water mixture, and the second cutting body 31 at the top of the second impeller forms a concentric smaller and more dense soda-water mixture when cutting the soda-water mixture. When the two streams of soda-water mixture flow outward, they continuously interact and cut each other, and the oxygen transfer process is performed again, and new soda-water mixtures with slightly different oxygen contents are continuously formed in the surrounding directions, so that the oxygen in the new soda-water mixture is redistributed and flows, increasing the oxygen movement path and continuously changing the flow direction, so as to improve the oxygen transfer efficiency.

[0032] Since the diameter of the first impeller 4 is smaller than that of the second impeller 3, when the first cutting body throws the cut soda-water mixture outward, an asymmetric soda-water mixture is formed in different circumferential and radial directions, creating conditions for the re-transfer of oxygen. The second cutting body 31 beyond the diameter of the first impeller cuts the asymmetric soda-water mixture above the second impeller, thereby improving the cutting effect in different directions, cutting the water droplets and bubbles below the soda-water mixture into smaller and denser ones, transferring more oxygen into the water, and further improving the oxygen transfer rate.

[0033] Preferably, the outer diameter of the first blade 43 gradually increases from top to bottom.

[0034] In step 20, the outer diameter of the blades of the first impeller gradually increases from top to bottom, and the pre-steam-water mixture generated by the first impeller flows in the direction of the upper cover plate, and the flow rate of the pre-steam-water mixture at the bottom is greater than the flow rate of the pre-steam-water mixture at the top; the incident pre-steam-water mixture at the top is reflected to form a reflected pre-steam-water mixture that is sprayed downward and outward. Since the speed of the incident pre-steam-water mixture at the bottom is greater than the speed of the incident pre-steam-water mixture at the top, it is also greater than the speed of the reflected pre-steam-water mixture at the top. Therefore, the incident pre-steam-water mixture at the bottom drives most of the reflected pre-steam-water mixture at the top, and then is sprayed onto the third cutting groove for cutting, and a new reflected pre-steam-water mixture is formed after being cut.

[0035] The integrated water purification method of the above preferred embodiment comprises the following steps: The first impeller 4 rotates at high speed, generating negative pressure in the first mixing chamber 21, and the air above the water surface enters the first mixing chamber through the air intake pipe 7, and mixes with the water in the first mixing chamber to form a pre-steam-water mixture, which is then used as the power fluid of the second impeller for aeration.

[0036] The air entering the air inlet branch pipe 5 enters the air ring 9, and then flows downward into the mixing chamber through the air outlet 91. During the air movement from top to bottom, the pre-steam-water mixture sprayed toward the upper cover plate 24 formed by the first impeller cuts each other around the first impeller, so that the water droplets and bubbles are cut smaller and denser, so as to improve the oxygen dissolving efficiency.

[0037] The high-speed rotating pre-steam-water mixture acts on the inner wall of the upper cover plate 24, and the first incident pre-steam-water mixture S1 above is cut by the third cutting body 25 to form a first reflected pre-steam-water mixture S1', and the first reflected pre-steam-water mixture moves downward and outward, collides, cuts and mixes with the second incident pre-steam-water mixture S2 below, and cuts the water droplets and bubbles into smaller and denser ones. Then, the first reflected pre-steam-water mixture S1' with a smaller flow rate will carry a small part of the second incident pre-steam-water mixture S2 with a larger flow rate to continue moving downward and outward, and the second incident pre-steam-water mixture S2 with a larger flow rate carries most of the first reflected pre-steam-water mixture S1' and is cut by the third cutting body again, and cuts the water droplets and bubbles into smaller and denser ones to form a second reflected pre-steam-water mixture S2', thereby continuously forming a third reflected pre-steam-water mixture and a fourth reflected pre-steam-water mixture that flow downward and outward and are continuously cut.

[0038] The second impeller 3 rotates at high speed, generating negative pressure in the second mixing chamber, and the air above the water surface enters the second mixing chamber through the air intake branch pipe 5, and forms a steam-water mixture with the pre-steam-water mixture in the mixing chamber. The air entering the mixing chamber from the air intake branch pipe is cut and mixed with the pre-steam-water mixture, making the water droplets and bubbles smaller and denser, so that more oxygen is dissolved in the water, thereby improving the oxygen transfer efficiency.

[0039] The first cutting body 41 of the eccentric structure and the second cutting body 31 of the concentric structure cut the soda-water mixture between the two impellers. The first cutting body cuts above the soda-water mixture. While the soda-water mixture flows outward, it continuously moves downward to increase the dissolved oxygen content of the water body below. The second cutting body cuts below the soda-water mixture, cutting the water droplets and bubbles into smaller and denser ones. While the soda-water mixture flows outward, it continuously moves upward to increase the dissolved oxygen content of the water body above, so as to improve the dissolved oxygen efficiency. The two eccentric downward and upward soda-water mixtures merge into each other, and at the same time, the positions of the circumferential and radial soda-water mixtures are continuously changed, so that the soda-water mixture between the two cover plates is mixed and distributed again, and more is transferred to the water to improve the dissolved oxygen efficiency.

[0040] The smaller and denser soda-water mixture produced by the first cutting body is distributed differently at different radial positions in the circumferential direction, and the radial position of the cut soda-water mixture is continuously changed. While changing the radial position, the flow of the soda-water mixture is strengthened, and the soda-water mixture with a lower oxygen content is continuously cut again, cutting more water droplets and bubbles into smaller and denser ones, so that more oxygen is transferred to the water.

[0041] When the first cutting body 41 cuts the soda-water mixture, a smaller and more dense soda-water mixture with different centers is formed. When the second cutting body 31 cuts the soda-water mixture, a smaller and more dense soda-water mixture with different centers is formed. When the two streams of the soda-water mixture flow outward, they continuously interact and cut each other, and the oxygen transfer process is performed again. New soda-water mixtures with slightly different oxygen contents are continuously formed in the surrounding directions, so that the oxygen in the new soda-water mixture is redistributed and flows, the oxygen movement path is increased, and the flow direction is continuously changed, so as to improve the oxygen transfer efficiency.

[0042] When the first cutting body 41 throws the soda-water mixture outward under the action of centrifugal force, an asymmetric soda-water mixture is formed in different circumferential directions and different radial directions, creating conditions for the re-transfer of oxygen. The second cutting body 31 exceeding the diameter of the first impeller cuts the asymmetric soda-water mixture above the second impeller, thereby improving the cutting effect in different directions, cutting the water droplets and bubbles below the soda-water mixture into smaller and denser ones, transferring more oxygen into the water, and further improving the oxygen transfer rate.

[0043] After being cut multiple times in different directions and in different ways, the soda-water mixture flows out from the flow channel 28 of the mixing chamber under the action of the second impeller rotating at a high speed, and oxygenates the surrounding water.

[0044] By continuously adjusting the first regulating valve 8 and the second regulating valve 6 on the air inlet device and using a flow meter to measure the aeration volume, the optimal aeration volume formed by the first impeller and the rated aeration volume of the aerator are determined.

[0045] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. An integrated water purification method, characterized in that: The following steps are involved: Step 10: the first impeller (4) and the second impeller (3) rotate to generate negative pressure in the mixing chamber (2); the air above the water surface enters the mixing chamber through the air intake pipe (7) and is mixed with the water in the mixing chamber under the action of the first impeller to form a pre-steam-water mixture; Step 20, the pre-steam-water mixture is incident on the inner wall of the upper cover plate (24) under the action of the first impeller (4), and the third cutting body (25) cuts the pre-steam-water mixture, so that more oxygen in the pre-steam-water mixture is dissolved in the water; at the same time, after the pre-steam-water mixture is cut, it moves downward and outward after being reflected by the upper cover plate, and collides, cuts, and mixes with the pre-steam-water mixture below that has not yet been incident on the inner wall of the upper cover plate, so that the water droplets and bubbles become smaller and denser, so that more oxygen is dissolved in the water; the reflected pre-steam-water mixture above drives part of the incident pre-steam-water mixture below to move downward and outward, and the incident pre-steam-water mixture below that has not yet been incident on the inner wall of the upper cover plate continues to flow toward the inner wall of the upper cover plate with part of the reflected pre-steam-water mixture above, and moves downward and outward after being reflected and cut by the upper cover plate; Step 30, the pre-steam-water mixture is used as the motive fluid of the second impeller (3) and is mixed with the air entering the mixing chamber through the air intake branch pipe (5) to form a steam-water mixture; In step 40, the soda-water mixture flows out from the flow channel (28) of the mixing chamber under the action of the second impeller to oxygenate the surrounding water.

2. The integrated water purification method according to claim 1, characterized in that: In step 20, air enters the air ring (9) through the air inlet branch pipe (5), and then flows downward into the mixing chamber through the air outlet hole (91); during the air movement from top to bottom, the pre-steam-water mixture sprayed in the direction of the upward cover plate (24) formed by the first impeller cuts each other around the first impeller, so that the water droplets and bubbles are cut into smaller and denser parts, thereby improving the oxygen dissolving efficiency.

3. The integrated water purification method according to claim 1, characterized in that: The steps 30 and 40 also include: Step 31, the first cutting body at the bottom of the first impeller (4) and the second cutting body at the top of the second impeller (3) cut the soda-water mixture entering between the two impellers; the first cutting body cuts above the soda-water mixture to cut water droplets and bubbles into smaller and denser particles, so that the soda-water mixture is constantly squeezed and moves downwards during its outward flow, thereby increasing the dissolved oxygen content of the water body below; the second cutting body cuts below the soda-water mixture to cut water droplets and bubbles into smaller and denser particles, so that the soda-water mixture is constantly squeezed and moves upwards during its outward flow, thereby increasing the dissolved oxygen content of the water body above, thereby improving the dissolved oxygen efficiency; the soda-water mixture squeezed downwards and the soda-water mixture squeezed upwards are mixed again, so that more oxygen is dissolved in the water; the soda-water mixture between the two impellers flows outwards to above the second impeller, and the second cutting body at the top of the second impeller cuts below the soda-water mixture again, further making the water droplets and bubbles smaller and denser particles.

4. The integrated water purification method according to claim 3, characterized in that: The step 31 further comprises: The center of the first cutting body (41) is not on the axis of the first impeller, so the smaller and denser soda-water mixture produced by the first cutting body is distributed at different radial positions in the circumferential direction, and the radial position of the cut soda-water mixture is continuously changed. While changing the radial position, the flow of the soda-water mixture is strengthened, and the soda-water mixture with a lower oxygen content is continuously cut again, so that more water droplets and bubbles are cut into smaller and denser ones, and more oxygen is transferred to the water; the two cutting bodies are not concentric, and when the first cutting body (41) at the bottom of the first impeller cuts the soda-water mixture, a smaller and denser soda-water mixture that is not concentric is formed, and when the second cutting body at the top of the second impeller cuts the soda-water mixture, a concentric smaller and denser soda-water mixture is formed; when the two streams of soda-water mixture flow outward, they are continuously subjected to mutual friction. The first impeller (4) has a diameter smaller than that of the second impeller (3). When the first cutting body throws the cut soda-water mixture outward, an asymmetric soda-water mixture in different circumferential and radial directions is formed, creating conditions for the oxygen to be transferred again. The second cutting body (31) beyond the diameter of the first impeller cuts the asymmetric soda-water mixture above the second impeller, improving the cutting effect in different directions, cutting the water droplets and bubbles below the soda-water mixture into smaller and denser parts, transferring more oxygen into the water, and further improving the oxygen transfer rate.

5. The integrated water purification method according to claim 1, characterized in that: In the step 20, the outer diameter of the blades of the first impeller gradually increases from top to bottom, and the pre-steam-water mixture generated by the first impeller and flowing in the direction of the upper cover plate has a flow rate of the pre-steam-water mixture at the bottom that is greater than the flow rate of the pre-steam-water mixture at the top; the incident pre-steam-water mixture at the top is reflected to form a reflected pre-steam-water mixture that is sprayed downward and outward. Since the speed of the incident pre-steam-water mixture at the bottom is greater than the speed of the incident pre-steam-water mixture at the top, and also greater than the speed of the reflected pre-steam-water mixture at the top, the incident pre-steam-water mixture at the bottom drives most of the reflected pre-steam-water mixture at the top, and then is sprayed onto the third cutting groove for cutting, and a new reflected pre-steam-water mixture is formed after being cut.

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