An apparatus and a preparation method for producing saturated dissolved oxygen water

Abstract

The present invention discloses a device and a preparation method for preparing saturated dissolved oxygen water, relating to the technical field of metrological detection equipment. The main purpose is to provide a device for preparing saturated dissolved oxygen water that can quickly prepare the saturated dissolved oxygen water required for calibrating a dissolved oxygen meter. The main technical solution of the present invention is as follows: A device for preparing saturated dissolved oxygen water includes: a housing component, an inner housing is arranged inside the bottom of the outer housing, and an inner ring body is arranged inside the top of the outer housing; a structural chamber, the bottom surface and the side surfaces of the first chamber, the second chamber and the third chamber are respectively communicated with the outer housing, and the fourth chamber is communicated with the top of the third chamber; a spraying component, the spraying component is arranged inside the inner ring body; an aeration component, the aeration component is arranged inside the bottom of the inner housing; and a circulation component, the circulation component is arranged inside the bottom of the inner housing. The present invention is mainly used for preparing saturated dissolved oxygen water.

Description

Technical Field

[0001] The present invention relates to the technical field of metrology and testing equipment, and in particular to a device and a preparation method for preparing saturated dissolved oxygen water. Background Art

[0002] The saturated dissolved oxygen water for the water used in the verification of the "Dissolved Oxygen Meter" verification regulation JJG 291-2018 (A.2 of Appendix A) is described as follows: Pour 2 / 3 volume of fresh distilled water (about 8L) into a constant temperature water bath, and float a porous plastic floating cover on the water surface. Adjust the water temperature to the temperature required during verification, start the stirrer to stir the water sample, and at the same time add a bubbler (air pump) to continuously aerate the water for more than 60 minutes. Stop aeration, and the water can be used for verification after standing for 30 minutes.

[0003] The following problems exist in the above regulations:

[0004] First, the aeration flow rate and aeration area are unknown. The size of the aeration flow rate and aeration area will affect the oxygen saturation rate in the water, directly affect the time for making saturated dissolved oxygen water, and at the same time have a direct impact on whether the finally prepared saturated dissolved oxygen water is saturated or supersaturated;

[0005] Second, it is unknown whether the internal circulation in the water bath is uniform. If the circulation in the water tank is not uniform, it will lead to uneven temperature. The uneven temperature directly leads to uneven distribution of dissolved oxygen. The uneven distribution of dissolved oxygen in the water will lead to inconsistent data between dissolved oxygen meters during verification. Summary of the Invention

[0006] In view of this, an embodiment of the present invention provides a device and a preparation method for preparing saturated dissolved oxygen water. The main purpose is to provide a device for preparing saturated dissolved oxygen water that can quickly prepare the saturated dissolved oxygen water required for verifying a dissolved oxygen meter.

[0007] To achieve the above object, the present invention mainly provides the following technical solutions:

[0008] On the one hand, an embodiment of the present invention provides a device for preparing saturated dissolved oxygen water, and the device includes:

[0009] A housing component, the housing component includes an outer housing, an inner housing, and an inner ring body. The inner housing is arranged inside the bottom of the outer housing, and the inner ring body is arranged inside the top of the outer housing;

[0010] A structural chamber, the structural chamber includes a first chamber, a second chamber, a third chamber, and a fourth chamber. The bottom surface and side surfaces of the first chamber, the second chamber, and the third chamber are respectively communicated with the outer housing, and the fourth chamber is communicated with the top of the third chamber;

[0011] A spraying component, which is arranged inside the inner ring body;

[0012] An aeration component, which is arranged on the inner bottom side of the inner shell;

[0013] A circulation component, which is arranged at the bottom of the inner shell.

[0014] Furthermore, there is a first gap between the outer shell and the inner shell.

[0015] Furthermore, the circulation component penetrates through the bottom of the inner shell.

[0016] Furthermore, the structural chamber further includes a first connecting pipe, a second connecting pipe and a third connecting pipe. One end of the first connecting pipe / the second connecting pipe / the third connecting pipe is connected to the outer shell and is located on the side of the inner shell, and the other end of the first connecting pipe / the second connecting pipe / the third connecting pipe is connected to the bottom surface of the first chamber / the second chamber / the third chamber.

[0017] Furthermore, the structural chamber further includes a fourth connecting pipe, a fifth connecting pipe, a sixth connecting pipe and a seventh connecting pipe. One end of the fourth connecting pipe / the fifth connecting pipe / the sixth connecting pipe is connected to the outer shell, and the other end is connected to the side of the fourth connecting pipe / the fifth connecting pipe / the sixth connecting pipe. One end of the seventh connecting pipe is connected to the top of the third chamber, and the other end is connected to the side of the fourth chamber.

[0018] Furthermore, the structural chamber further includes a separator, which is arranged inside the third chamber and is in communication with the sixth connecting pipe.

[0019] Furthermore, the separator includes a separation shell and a separation pipe. One end of the separation pipe is connected to the sixth connecting pipe, and the other end extends into the separation shell. The separation shell has a separation channel, and the separation channel is arranged on the side of the separation pipe.

[0020] Furthermore, the axes of the inner shell, the inner ring body and the outer shell coincide with each other.

[0021] Furthermore, the circulation component is a jet circulation device.

[0022] On the other hand, an embodiment of the present invention also provides a preparation method for preparing saturated dissolved oxygen water, and the method includes the following steps:

[0023] Introduce water into the outer shell and the inner shell to make the water in the inner shell overflow and enter the outer shell;

[0024] The aeration component aerates upward to make the water in the inner shell form gas-saturated water;

[0025] The spraying component sprays downward to make the sprayed water form convection with the gas generated by the aeration component and form water-saturated gas in the area between the inner shell and the inner ring;

[0026] Part of the water-saturated gas returns to the inner shell and the outer shell, and the gas-saturated water enters the first chamber and the second chamber. The first chamber and the second chamber are water body calibration chambers. Part of the water-saturated gas enters the third chamber and the fourth chamber in sequence. The fourth chamber is a gas calibration chamber.

[0027] Compared with the prior art, the present invention has the following technical effects:

[0028] In the technical solution provided by the embodiment of the present invention, the function of the housing component is to provide a place for generating gas-saturated water and water-saturated gas. The housing component includes an outer housing, an inner housing, and an inner ring body. The inner housing is arranged inside the bottom of the outer housing, and the inner ring body is arranged inside the top of the outer housing; the structural chamber includes a first chamber, a second chamber, a third chamber, and a fourth chamber. The bottom surface and side surfaces of the first chamber, the second chamber, and the third chamber are respectively communicated with the outer housing, and the fourth chamber is communicated with the top of the third chamber; the function of the spraying component is to spray water into the outer housing, and the spraying component is arranged inside the inner ring body; the function of the aeration component is to aerate the inner housing, and the aeration component is arranged inside the bottom of the inner housing; the function of the circulation component is to perform circulating jet stirring on the water to ensure uniform water temperature. The circulation component is arranged at the bottom of the inner housing. Compared with the prior art, 2 / 3 of the volume of fresh distilled water (about 8L) is poured into the constant temperature water bath, and the porous plastic floating cover is floated on the water surface. The water temperature is adjusted to the temperature required during calibration, the stirrer is started to stir the water sample, and at the same time, a bubbler (air pump) is used to continuously aerate the water for more than 60 minutes. After stopping aeration, the water is allowed to stand for 30 minutes and then can be used for calibration. The following problems exist in the above procedures: First, the aeration flow rate and aeration area are unknown. The size of the aeration flow rate and aeration area will affect the oxygen saturation rate in the water, directly affect the time for making saturated dissolved oxygen water, and at the same time have a direct impact on whether the finally made saturated dissolved oxygen water is saturated or supersaturated; Second, it is unknown whether the circulation in the water bath is uniform.If the circulation in the water tank is uneven, it will lead to uneven temperature. The uneven temperature directly causes uneven distribution of dissolved oxygen. The uneven distribution of dissolved oxygen in water will result in inconsistent data among dissolved oxygen meters during calibration. In this technical solution, an inner housing is arranged inside the outer housing. The circulation component and the aeration component are arranged on the inner bottom side of the inner housing, and the spraying component is arranged inside the inner ring body. By introducing water into the outer housing and the inner housing, the water in the inner housing overflows and enters the outer housing. Then, the aeration component is started. The aeration component aerates upward to make the water in the inner housing form gas-saturated water; the spraying component sprays downward to make the sprayed water form convection with the gas generated by the aeration component and form water-saturated gas in the area between the inner housing and the inner ring body. Part of the water-saturated gas returns to the inner housing and the outer housing. The gas-saturated water enters the first chamber and the second chamber. The first chamber and the second chamber are water body calibration chambers. The water-saturated gas enters the third chamber and the fourth chamber in sequence. The fourth chamber is a gas calibration chamber, making the fourth chamber, the first chamber, and the second chamber relatively independent. Only the area of the inner housing and the outer housing shares the temperature control part, which can avoid the influence of the aeration gas on the dissolved oxygen meter during the aeration process. At the same time, by controlling the aeration flow area, the spraying flow, and the water body temperature, the content of saturated dissolved oxygen in the water body can be accurately controlled to ensure that the water body is in a saturated state and avoid the state of unsaturation or supersaturation of the water body. When the water-saturated gas passes through the third chamber, the excess water can be separated and enter the fourth chamber. The dissolved oxygen meter is placed in the fourth chamber for calibration. And, compared with the traditional method of making saturated dissolved oxygen water, only through gas-saturated water, this technical solution greatly improves the production efficiency of saturated dissolved oxygen water, improves the calibration efficiency and accuracy of the dissolved oxygen meter, and reduces the human influence factors during the calibration of the dissolved oxygen meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 FIG. 1 is a front view structural diagram of a device for preparing saturated dissolved oxygen water provided by an embodiment of the present invention;

[0030] Figure 2 FIG. 2 is a top view structural diagram of a device for preparing saturated dissolved oxygen water provided by an embodiment of the present invention;

[0031] Figure 3 FIG. 3 is a bottom view structural diagram of a device for preparing saturated dissolved oxygen water provided by an embodiment of the present invention;

[0032] Figure 4 FIG. 4 is a flowchart of a preparation method for preparing saturated dissolved oxygen water provided by an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] The present invention will be further described in detail below with reference to the drawings and embodiments.

[0034] On the one hand, asFigures 1 to 3 As shown in the figure, an embodiment of the present invention provides a device for preparing saturated dissolved oxygen water, and the device includes:

[0035] A housing component, which includes an outer housing 11, an inner housing 12 and an inner ring 13. The inner housing 12 is arranged inside the bottom of the outer housing 11, and the inner ring 13 is arranged inside the top of the outer housing 11;

[0036] A structural chamber, which includes a first chamber 21, a second chamber 22, a third chamber 23 and a fourth chamber 24. The bottom surface and the side surface of the first chamber 21, the second chamber 22 and the third chamber 23 are respectively communicated with the outer housing 11, and the fourth chamber 24 is communicated with the top of the third chamber 23;

[0037] A spraying component 3, which is arranged inside the inner ring 13;

[0038] An aeration component 4, which is arranged inside the bottom of the inner housing 12;

[0039] A circulation component 5, which is arranged at the bottom of the inner housing 12.

[0040] In the technical solution provided by the embodiment of the present invention, the function of the housing component is to provide a place for generating gas-saturated water and water-saturated gas. The housing component includes an outer housing 11, an inner housing 12, and an inner ring 13. The inner housing 12 is arranged inside the bottom of the outer housing 11, and the inner ring 13 is arranged inside the top of the outer housing 11; the structural chamber includes a first chamber 21, a second chamber 22, a third chamber 23, and a fourth chamber 24. The bottom surface and side surfaces of the first chamber 21, the second chamber 22, and the third chamber 23 are respectively communicated with the outer housing 11, and the fourth chamber 24 is communicated with the top of the third chamber 23; the function of the spraying component 3 is to spray water into the outer housing 11, and the spraying component 3 is arranged inside the inner ring 13; the function of the aeration component 4 is to aerate the inner housing 12, and the aeration component 4 is arranged inside the bottom of the inner housing 12; the function of the circulation component 5 is to circulate water, and the circulation component 5 is arranged at the bottom of the inner housing 12. Compared with the prior art, 2 / 3 of the volume of fresh distilled water (about 8L) is poured into the constant temperature water bath, and the porous plastic floating cover is floated on the water surface. The water temperature is adjusted to the temperature required during calibration, the stirrer is started to stir the water sample, and at the same time, a bubbler (air pump) is used to continuously aerate the water for more than 60 minutes. After stopping aeration, the water is allowed to stand for 30 minutes and then can be used for calibration. The following problems exist in the above procedure: First, the aeration flow rate and aeration area are unknown. The size of the aeration flow rate and aeration area will affect the oxygen saturation rate in the water, directly affect the time for making saturated dissolved oxygen water, and at the same time have a direct impact on whether the finally made saturated dissolved oxygen water is saturated or supersaturated; Second, it is unknown whether the circulation in the water bath is uniform.If the circulation in the water tank is uneven, it will lead to uneven temperature. The uneven temperature directly causes uneven distribution of dissolved oxygen. The uneven distribution of dissolved oxygen in water will result in inconsistent data among dissolved oxygen meters during calibration. In this technical solution, an inner housing 12 is arranged inside the outer housing 11. The circulation component 5 and the aeration component 4 are arranged on the inner side of the bottom of the inner housing 12, and the spraying component 3 is arranged inside the inner ring body 13. By introducing water into the outer housing 11 and the inner housing 12, the water in the inner housing 12 overflows and enters the outer housing 11. Then, the aeration component 4 is started. The aeration component 4 aerates upward to make the water in the inner housing 12 form gas-saturated water; the spraying component 3 sprays downward to make the sprayed water form convection with the gas generated by the aeration component 4 and form water-saturated gas in the area between the inner housing 12 and the inner ring body 13. Part of the water-saturated gas returns to the inner housing 12 and the outer housing 11. Then, the gas-saturated water enters the first chamber 21 and the second chamber 22. The first chamber 21 and the second chamber 22 are water body calibration chambers. Part of the water-saturated gas enters the third chamber 23 and the fourth chamber 24 in sequence. The fourth chamber 24 is a gas calibration chamber, making the fourth chamber 24, the first chamber 21 and the second chamber 22 relatively independent. Only the area of the inner housing 12 and the outer housing 11 shares the temperature control part, which can avoid the influence of the aeration gas on the dissolved oxygen meter during the aeration process. At the same time, by controlling the aeration flow rate, the spraying flow rate and the water body temperature, the content of saturated dissolved oxygen in the water body can be accurately controlled to ensure that the water body is in a saturated state and avoid the state of unsaturated or supersaturated water body. When the water-saturated gas passes through the third chamber 23, the excess water can be separated and enter the fourth chamber 24. The dissolved oxygen meter is placed in the fourth chamber 24 for calibration. And, compared with the traditional method of making saturated dissolved oxygen water, only through gas-saturated water, this technical solution greatly improves the production efficiency of saturated dissolved oxygen water, improves the calibration efficiency and accuracy of the dissolved oxygen meter, and reduces the human influence factors during the calibration of the dissolved oxygen meter.

[0041] The function of the above-mentioned housing component is to provide a place for generating gas-saturated water and water-saturated gas. The housing component includes an outer housing 11, an inner housing 12, and an inner ring body 13. The inner housing 12 is arranged inside the bottom of the outer housing 11, and the inner ring body 13 is arranged inside the top of the outer housing 11. The housing component is made of glass material or plastic material. The outer housing 11 is a housing with a cylindrical structure. The inner housing 12 is arranged inside the bottom of the outer housing 11, and the inner ring body 13 is arranged inside the top of the outer housing 11. Moreover, the axes of the inner housing 12, the outer housing 11, and the inner ring body 13 coincide with each other. There is a first interval 14 between the inner housing 12 and the outer housing 11. The upper part of the inner housing 12 is an open structure. The inner ring body 13 is located directly above the inner housing 12. The upper part of the inner ring body 13 is connected to the inside of the top of the outer housing 11. The lower part of the inner ring body 13 is an open structure;The structural chamber includes a first chamber 21, a second chamber 22, a third chamber 23, and a fourth chamber 24. The bottom surfaces and side surfaces of the first chamber 21, the second chamber 22, and the third chamber 23 are respectively in communication with the outer housing 11. The fourth chamber 24 is in communication with the top of the third chamber 23. Specifically, the structural chamber further includes a first connecting pipe 251, a second connecting pipe 252, and a third connecting pipe 253. One end of the first connecting pipe 251 / the second connecting pipe 252 / the third connecting pipe 253 is connected to the outer housing 11 and is located on the side surface of the inner housing 12. The other end of the first connecting pipe 251 / the second connecting pipe 252 / the third connecting pipe 253 is connected to the bottom surface of the first chamber 21 / the second chamber 22 / the third chamber 23. The structural chamber further includes a fourth connecting pipe 254, a fifth connecting pipe 255, a sixth connecting pipe 256, and a seventh connecting pipe 257. One end of the fourth connecting pipe 254 / the fifth connecting pipe 255 / the sixth connecting pipe 256 is connected to the outer housing 11, and the other end is connected to the side surface of the fourth connecting pipe 254 / the fifth connecting pipe 255 / the sixth connecting pipe 256. One end of the seventh connecting pipe 257 is connected to the top of the third chamber 23, and the other end is connected to the side surface of the fourth chamber 24. The first chamber 21 is installed on the outer housing 11 through the first connecting pipe 251 and the fourth connecting pipe 254. A water pump needs to be provided on the first connecting pipe 251. The water pump can transport the water-saturated gas in the outer housing 11 into the first chamber 21. The first chamber 21 is a water body saturated dissolved oxygen measurement chamber. The second chamber 22 is installed on the outer housing 11 through the second connecting pipe 252 and the fifth connecting pipe 255. A water pump needs to be provided on the second connecting pipe 252. The water pump can transport the gas-saturated water in the outer housing 11 into the second chamber 22. The second chamber 22 is an anaerobic water constant temperature chamber. The third chamber 23 is installed on the outer housing 11 through the third connecting pipe 253 and the sixth connecting pipe 256. The difference between the third connecting pipe 253 and the first connecting pipe 251 and the second connecting pipe 252 is that the third connecting pipe 253 is a return pipe, while the first connecting pipe 251 and the second connecting pipe 252 are delivery pipes. The fourth connecting pipe 254 and the fifth connecting pipe 255 are return pipes, and the sixth connecting pipe 256 is a delivery pipe. And the sixth connecting pipe 256 is provided on the side surface of the inner ring body 13. Only gaseous water-saturated gas can enter the third chamber 23 through the sixth connecting pipe 256. A separator 230 is provided in the third chamber 23. The separator 230 can perform water-vapor separation on the water-saturated gas. Water flows back into the inner part of the outer housing 11 through the third connecting pipe 253, and the gas enters the fourth chamber 24. The fourth chamber 24 measures and calibrates the dissolved oxygen analyzer. The function of the spraying component 3 is to spray water into the outer housing 11. The spraying component 3 is provided inside the inner ring body 13. The spraying component 3 can spray the already constant-temperature water from the top of the inner housing 12 into the inner part of the outer housing 11. And the water temperature can be set and adjusted;The function of the aeration component 4 is to aerate the inner housing 12. The aeration component 4 is arranged on the inner side of the bottom of the inner housing 12. The gas of the aeration component 4 is air. The aeration component 4 introduces the external gas into the water in the inner housing 12 by means of aeration, so that a small part of the oxygen in the aeration dissolves in the water in the inner housing 12. At this time, it is called primary saturation, or gas-saturated water. Most of the gas will overflow upward to the area between the inner housing 12 and the inner ring body 13. At the same time, the spraying component 3 sprays water downward, generating convection with the gas aerated at the bottom in the area between the inner housing 12 and the inner ring body 13. The sprayed water body is atomized into small enough water droplets. At this time, the water and gas have a larger contact area and can be secondarily saturated in the area between the inner housing 12 and the inner ring body 13, which can also be called water-saturated gas. The water body after secondary saturation already contains more oxygen, and at the same time the gas is quickly saturated by the water body and returns to the inner housing 12 under the action of gravity. Repeating this way can quickly saturate the dissolved oxygen in the water body of the inner housing 12. Part of the water body in the inner housing 12 overflows into the first interval 14. The first interval 14 is the area between the outer housing 11 and the inner housing 12. Then, the overflowed water body is pumped to the first chamber 21 and the second chamber 22 through a water pump. The first chamber 21 and the second chamber 22 are water body calibration chambers. The function of the circulation component 5 is to circulate the water. The circulation component 5 is arranged at the bottom of the inner housing 12. The overflowed part of the water body returns to the inside of the inner housing 12 through the circulation component 5. Repeating this cycle, since the water body on the inner side of the inner housing 12 is in an aerated state, the water body on the inner side of the inner housing 12 will contain excess unabsorbed oxygen. In order to avoid the influence of the unabsorbed oxygen in the water body on the calibration of the dissolved oxygen analyzer, the water in the first chamber 21 and the second chamber 22 both comes from the first interval 14. When the liquid on the inner side of the inner housing 12 overflows to the first interval 14, the excess gas in the water body has been discharged. The circulation direction of the water body is to jet in from the bottom of the first chamber 21 and overflow back to the outer housing 11 from the top. During the circulation process, the water body temperature is always kept uniform. The water-saturated gas in the fourth chamber 24 comes from the area between the inner housing 12 and the inner ring body 13. The function of the inner ring body 13 is to prevent the water sprayed by the spraying component 3 from adding more water vapor to the gas about to enter the fourth chamber 24. The gas separates the water vapor in the supersaturated air through the third chamber 23. The air saturated by the water body enters the fourth chamber 24. The excess water body flows back to the inside of the outer housing 11 through the separator 230 in the third chamber 23, thereby improving the production efficiency of the saturated dissolved oxygen water, improving the calibration efficiency and accuracy of the dissolved oxygen analyzer, and reducing the human influence factors during the calibration of the dissolved oxygen analyzer.;

[0042] Further, the circulation component 5 penetrates through the bottom of the inner housing 12. In this embodiment, the circulation component 5 is further defined. The circulation component 5 adopts a jet circulation device. The circulation component 5 penetrates through the bottom of the inner housing 12, and can spray the water in the first interval 14 in a jet manner, so that the water circulates and flows between the inner housing 12 and the outer housing 11, thereby achieving the technical effect of water circulation.

[0043] Further, the structural chamber further includes a separator 230. The separator 230 is disposed inside the third chamber 23, and the separator 230 communicates with the sixth connecting pipe 256. In this embodiment, the structural chamber is further defined. The separator 230 is disposed inside the third chamber 23. The function of the separator 230 is to separate water and vapor from the water-saturated gas. The water flows back into the inner part of the outer housing 11 through the third connecting pipe 253, while the gas enters the fourth chamber 24. The dissolved oxygen analyzer measures and calibrates the dissolved oxygen in the fourth chamber 24, thereby achieving the technical effect of separating water and gas. Specifically, the separator 230 includes a separation housing 231 and a separation pipe 232. One end of the separation pipe 232 is connected to the sixth connecting pipe 256, and the other end extends into the separation housing 231. The separation housing 231 has a separation channel. The separation channel is disposed on the side of the separation pipe 232. The separation housing 231 adopts a conical structure. One end of the separation pipe 232 is connected to the sixth connecting pipe 256, and the other end extends into the separation housing 231 from the bottom of the separation housing 231. Water and gas enter the interior of the separation housing 231 at the same time. The separation housing 231 separates water and gas. The separated water drops from the separation pipe 232 under the action of gravity to the third connecting pipe 253 and returns to the inner part of the outer housing 11, and the gas is discharged from the separation pipe 232 and rises into the fourth chamber 24, thereby achieving the technical effect of separating water and gas, and making the saturated dissolved oxygen water entering the fourth chamber 24 in a saturated state, improving the calibration efficiency and accuracy of the dissolved oxygen analyzer, and reducing the human influence factors in the calibration process of the dissolved oxygen analyzer.

[0044] On the other hand, as Figure 4 shown, the embodiment of the present invention further provides a preparation method for preparing saturated dissolved oxygen water. The method includes the following steps:

[0045] 101. Introduce water into the outer housing and the inner housing, so that the water in the inner housing overflows and enters the outer housing;

[0046] First, introduce water with a certain temperature into the inner housing and the outer housing. The temperature of the water can be adjusted. The water overflows from the inner housing to the first interval.

[0047] 102. The aeration component performs aeration upward to form gas-saturated water in the inner housing;

[0048] The aeration component aerates the water in the inner housing. During the aeration process, a small portion of the oxygen in the gas dissolves in the water in the inner housing. At this time, it is called primary saturation, or gas-saturated water, while most of the gas will overflow upward to reach the area between the inner housing and the inner ring body.

[0049] 103. The spraying component sprays downward so that the sprayed water forms a convection with the gas generated by the aeration component and forms water-saturated gas in the area between the inner housing and the inner ring body.

[0050] The sprayed water comes from the bottom water body and has the same temperature as the bottom water body. The spraying component uses existing atomizing spraying equipment. The spraying component sprays the water downward, generates a convection with the gas exposed at the bottom in the area between the inner housing and the inner ring body. The sprayed water body is atomized into sufficiently small water droplets. At this time, the water and gas have a larger contact area, and can be secondarily saturated in the area between the inner housing and the inner ring body, and can also be called water-saturated gas.

[0051] 104. Part of the water-saturated gas returns to the inner housing and the outer housing, and the gas-saturated water enters the first chamber and the second chamber. The first chamber and the second chamber are water body calibration chambers. Part of the water-saturated gas enters the third chamber and the fourth chamber in sequence. The fourth chamber is a gas calibration chamber.

[0052] The water body after secondary saturation already contains more oxygen, and at the same time the gas is quickly saturated by the water body. Under the action of gravity, it returns to the inner housing. Repeating like this can quickly saturate the dissolved oxygen in the water body of the inner housing. Part of the water body in the inner housing overflows into the first interval. The first interval is the area between the outer housing and the inner housing. Then, the overflowed water body is pumped to the first chamber and the second chamber by a water pump. The water-saturated gas in the fourth chamber comes from the area between the inner housing and the inner ring body. The role of the inner ring body is to prevent the water sprayed by the spraying component from adding more water vapor to the gas about to enter the fourth chamber. The gas separates the water vapor in the supersaturated air through the third chamber. The air saturated by the water body enters the fourth chamber, and the excess water body flows back to the inside of the outer housing through the separator in the third chamber.

[0053] In this technical solution, since the water body inside the inner shell is in an aerated state, the water body inside the inner shell will contain excess unabsorbed oxygen. To avoid the influence of the unabsorbed oxygen in the water body on the calibration of the dissolved oxygen analyzer, the water in the first chamber and the second chamber both comes from the first interval. When the liquid inside the inner shell overflows into the first interval, the excess gas in the water body has been discharged. The circulation direction of the water body is to jet in from the bottom of the first chamber and overflow back to the outer shell at the top. During the circulation process, the water temperature is always kept uniform. The saturated gas of the water in the fourth chamber comes from the area between the inner shell and the inner ring body. The function of the inner ring body is to prevent the water sprayed by the spraying component from adding more water vapor to the gas about to enter the fourth chamber. The gas separates the water vapor in the supersaturated air through the third chamber, and the air saturated with water enters the fourth chamber. The excess water body flows back to the inside of the outer shell through the separator in the third chamber, thereby improving the production efficiency of saturated dissolved oxygen water, improving the calibration efficiency and accuracy of the dissolved oxygen analyzer, and reducing the human influence factors during the calibration of the dissolved oxygen analyzer.

[0054] As described above, the above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. An apparatus for preparing saturated dissolved oxygen water, characterized in that, Comprising: A housing component, said housing component including an outer housing, an inner housing, and an inner ring body. The inner housing is disposed inside the bottom of the outer housing, and the inner ring body is disposed inside the top of the outer housing; A structural chamber, said structural chamber including a first chamber, a second chamber, a third chamber, and a fourth chamber. The bottom surfaces and side surfaces of the first chamber, the second chamber, and the third chamber are respectively in communication with the outer housing. The fourth chamber is in communication with the top of the third chamber. The structural chamber further includes a first connecting pipe, a second connecting pipe, and a third connecting pipe. One ends of the first connecting pipe, the second connecting pipe, and the third connecting pipe are respectively connected to the outer housing and are located on the side surface of the inner housing. The other ends of the first connecting pipe, the second connecting pipe, and the third connecting pipe are respectively connected to the bottom surfaces of the first chamber, the second chamber, and the third chamber. The structural chamber further includes a fourth connecting pipe, a fifth connecting pipe, a sixth connecting pipe, and a seventh connecting pipe. One ends of the fourth connecting pipe, the fifth connecting pipe, and the sixth connecting pipe are respectively connected to the outer housing, and the other ends are respectively connected to the side surfaces of the first chamber, the second chamber, and the third chamber. One end of the seventh connecting pipe is connected to the top of the third chamber, and the other end is connected to the side surface of the fourth chamber. The structural chamber further includes a separator, the separator is disposed inside the third chamber, the separator is in communication with the sixth connecting pipe, the separator includes a separation housing and a separation pipe. One end of the separation pipe is connected to the sixth connecting pipe, and the other end extends into the separation housing. The separation housing has a separation channel, and the separation channel is disposed on the side surface of the separation pipe; A spraying component, the spraying component is disposed inside the inner ring body; An aeration component, the aeration component is disposed inside the bottom of the inner housing; A circulation component, the circulation component is disposed at the bottom of the inner housing, and the circulation component penetrates through the bottom of the inner housing.

2. The device for preparing saturated dissolved oxygen water according to claim 1, wherein There is a first gap between the outer housing and the inner housing.

3. The device for preparing saturated dissolved oxygen water according to claim 1 or 2, wherein The axes of the inner housing, the inner ring body, and the outer housing coincide with each other.

4. The device for preparing saturated dissolved oxygen water according to claim 1 or 2, wherein The circulation component is a jet circulation device.

5. A method for preparing saturated dissolved oxygen water according to claim 1, characterized in that, Including the following steps: Introduce water into the outer housing and the inner housing, so that the water in the inner housing overflows and enters the outer housing; The aeration component performs upward aeration to make the water in the inner housing form gas-saturated water; The spraying component performs downward spraying so that the sprayed water and the gas generated by the aeration component form convection and form water-saturated gas in the region between the inner housing and the inner ring body; Part of the water-saturated gas returns to the inner housing and the outer housing, the gas-saturated water enters the first chamber and the second chamber. The first chamber and the second chamber are water body calibration chambers. Part of the water-saturated gas sequentially enters the third chamber and the fourth chamber. The fourth chamber is a gas calibration chamber.

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