Pipeline feeding device for carbon dioxide

Abstract

The utility model discloses a pipeline feeding device for carbon dioxide, which comprises a carbon dioxide assembly, a pipeline feeding device and a pipeline feeding device, the input end of the Venturi tube is respectively communicated with the carbon dioxide component and external water supply, so that the carbon dioxide and the external water supply form a gas-liquid mixture in the Venturi tube; one end of the raw water pipe is communicated with external raw water, the other end of the raw water pipe is communicated with external water, and the output end of the Venturi pipe is communicated with the raw water pipe so that the gas-liquid mixture can be mixed with the raw water and then conveyed out, the structure is simple, the adding effect of carbon dioxide can be effectively improved, and the energy consumption is reduced. And auxiliary equipment such as a pressure pump is not needed.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment, in particular to a pipeline dosing device for carbon dioxide. Background Art

[0002] Carbon dioxide gas is added into the raw water pipeline to react with water to produce carbonic acid, thereby reducing the Ph value. The chemical equation is CO2+H2O=H2CO3.

[0003] In the prior art, most carbon dioxide is soluble in water, but its solubility in water is not large, so it is necessary to promote the full mixing reaction of carbon dioxide and water.

[0004] In addition, the carbon dioxide gas is not broken up into small bubbles, but directly added to the raw water pipe, which is easy to escape. Of course, the raw water will flow back into the gasifier, freeze and block the pipe, thus causing the dosing to stop. Summary of the invention

[0005] The utility model aims to solve at least one of the problems existing in the existing related technologies to a certain extent. To this end, the utility model proposes a pipeline dosing device for carbon dioxide, which has a simple structure and can effectively improve the dosing effect of carbon dioxide without the need for auxiliary equipment such as a pressure pump.

[0006] The above purpose is achieved through the following technical solutions:

[0007] A pipeline dosing device for carbon dioxide, comprising:

[0008] a carbon dioxide assembly adapted to generate carbon dioxide;

[0009] A venturi tube, wherein the input end of the venturi tube is respectively connected to the carbon dioxide component and the external water supply, so that the carbon dioxide and the external water supply form a gas-liquid mixture in the venturi tube;

[0010] A raw water pipe, one end of which is connected to external raw water, and the other end is connected to external water, and the output end of the venturi tube is connected to the raw water pipe so that the gas-liquid mixture is mixed with the raw water and then transported out.

[0011] In some embodiments, a dosing pipe is further included, one end of which is connected to the raw water pipe, and the other end of which is connected to the output end of the venturi tube.

[0012] In some embodiments, the pipe opening of the dosing pipe is a bevel structure.

[0013] In some embodiments, the groove structure and the fluid in the raw water pipe are set to a back pressure.

[0014] In some embodiments, the carbon dioxide assembly includes a storage tank and a gasifier, wherein the storage tank is suitable for storing liquid carbon dioxide, and one end of the gasifier is connected to the storage tank, and the other end is connected to the input end of the venturi tube.

[0015] In some embodiments, the carbon dioxide assembly further includes a pressure reducing valve and a gas flow meter, wherein the pressure reducing valve and the gas flow meter are sequentially disposed at a middle position between an output end of the pressure reducing valve and an input end of the venturi tube.

[0016] In some embodiments, the cross-section of the output end of the venturi tube gradually decreases along the water outlet direction thereof.

[0017] In some embodiments, a first water flow meter is further included, and the first flow meter is disposed at a midpoint between the input end of the venturi tube and the external water supply.

[0018] In some embodiments, a first pH detector and a second pH detector are further included, wherein the first pH detector is disposed at the water inlet end of the raw water pipe, and the second pH detector is disposed at the water outlet end of the raw water pipe.

[0019] In some embodiments, a second water flow meter is further included, wherein the second water flow meter is disposed on the water inlet end of the raw water pipe.

[0020] Compared with the prior art, the present invention has at least the following beneficial effects:

[0021] 1. The utility model is a pipeline dosing device for carbon dioxide, which has a simple structure and can effectively improve the dosing effect of carbon dioxide without the aid of auxiliary equipment such as a pressure pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a structural schematic diagram of a pipeline dosing device in an embodiment of the utility model. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in combination with the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. The components of the embodiment of the utility model can be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention for which protection is sought, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of the technical solution for which protection is sought in the present invention.

[0026] Example:

[0027] like Figure 1 As shown, this embodiment provides a pipeline dosing device for carbon dioxide, comprising:

[0028] A carbon dioxide component 1, the carbon dioxide component 1 is suitable for generating carbon dioxide;

[0029] The venturi tube 2, the input end of the venturi tube 2 is respectively connected with the carbon dioxide component 1 and the external water supply, so that the carbon dioxide and the external water supply form a gas-liquid mixture in the venturi tube 2;

[0030] The raw water pipe 3 has one end connected to external raw water and the other end connected to external water, and the output end of the venturi tube 2 is connected to the raw water pipe 3 so that the gas-liquid mixture is mixed with the raw water and then transported out.

[0031] In this embodiment, a venturi tube 2 is added to allow carbon dioxide to mix violently with high-speed tap water to form a gas-water mixture, thereby increasing the mixing rate of gas and water, and then the mixture is added to the raw water pipe 3 to allow the gas-water mixture to mix and react with the raw water. The structure is simple, and the effect of carbon dioxide addition can be effectively improved, and it does not require the aid of auxiliary equipment such as a pressure pump to achieve this.

[0032] In this embodiment, the carbon dioxide component 1 is suitable for generating carbon dioxide and outputting the generated carbon dioxide. Since an input end and an output end are respectively provided on the left and right ends of the venturi tube 2, and the other input end is located at the upper end of the venturi tube 2, the input end of the venturi tube 2 is respectively connected with the carbon dioxide component 1 and the external water supply, that is, the external water supply is connected with the left end of the venturi tube 2, and the carbon dioxide component 1 is connected with the upper end of the venturi tube 2, so that the left end of the venturi tube 2 and the upper end of the venturi tube 2 both form the input end of the venturi tube 2. Since a gas-water mixing chamber is defined in the venturi tube 2, That is, carbon dioxide and external water supply can form a gas-liquid mixture in the venturi tube 2. Then, since one end of the raw water pipe 3 is connected to the external raw water, and the other end is connected to the external water supply, and the output end of the venturi tube 2 is connected to the upper end of the raw water pipe 3, the gas-liquid mixture can enter the raw water pipe 3, mix with the raw water, react, and then be transported out. According to the Venturi principle, a continuous negative pressure is formed by the high-speed jet in the additional venturi tube 2 to suck the carbon dioxide gas, thereby avoiding the phenomenon that the raw water in the pipeline flows back into the vaporizer 12 when changing the bottle, and freezes and blocks the vaporizer 12 due to encountering the frozen carbon dioxide gas.

[0033] Furthermore, it also includes a dosing pipe 4 , one end of which is connected to the raw water pipe 3 , and the other end of which is connected to the output end of the venturi tube 2 .

[0034] Preferably, the pipe opening of the dosing pipe 4 is a bevel structure.

[0035] Specifically, the groove structure and the fluid in the raw water pipe 3 are set in a back pressure configuration.

[0036] In the present embodiment, one end of the dosing pipe 4 is connected to the upper end of the raw water pipe 3, and the other end is connected to the output end of the venturi tube 2. Preferably, the nozzle of the dosing pipe 4 is a bevel structure, that is, the outlet nozzle of the dosing pipe 4 is a bevel structure. Specifically, the end of the dosing pipe 4 close to the raw water pipe 3 is a bevel structure. When the nozzle of the dosing pipe 4 is a bevel structure, at least part of the nozzle of the dosing pipe 4 extends into the raw water pipe 3, and after the nozzle of the dosing pipe 4 extends into the raw water pipe 3, it is spaced apart from the inner wall of the other end of the raw water pipe 3. Of course, in order to effectively increase the mixing rate of the gas-liquid mixture and the raw water, the nozzle of the dosing pipe 4 can pass through the upper end wall of the raw water pipe 3, enter the dosing pipe 4, and then extend to the middle position of the diameter of the raw water pipe 3. In addition, since the pipe opening of the dosing pipe 4 is set as a bevel structure at the back pressure position, the external water supply is used to draw suction on it, thereby accelerating the mixing of carbon dioxide and the external water supply. At the same time, it can be achieved without the aid of auxiliary equipment such as a pressure pump, which not only improves the mixing reaction efficiency but also reduces energy consumption.

[0037] Preferably, the carbon dioxide assembly 1 comprises a storage tank 11 and a vaporizer 12 , wherein the storage tank 11 is suitable for storing liquid carbon dioxide, and one end of the vaporizer 12 is connected to the storage tank 11 , and the other end is connected to the input end of the venturi tube 2 .

[0038] Furthermore, the carbon dioxide assembly 1 further comprises a pressure reducing valve 13 and a gas flow meter 14 , wherein the pressure reducing valve 13 and the gas flow meter 14 are sequentially arranged at a middle position between an output end of the pressure reducing valve 13 and an input end of the venturi tube 2 .

[0039] Specifically, the cross section of the output end of the venturi tube 2 gradually decreases along the water outlet direction thereof.

[0040] Furthermore, it also includes a first water flow meter 5, which is arranged at a middle position between the input end of the venturi tube 2 and the external water supply.

[0041] Specifically, it also includes a first PH detector 6 and a second PH detector 7 , wherein the first PH detector 6 is arranged at the water inlet end of the raw water pipe 3 , and the second PH detector 7 is arranged at the water outlet end of the raw water pipe 3 .

[0042] In particular, it also includes a second water flow meter 8 , wherein the second water flow meter 8 is arranged on the water inlet end of the raw water pipe 3 .

[0043] In the present embodiment, the storage tank 11 is preferably made of a Dewar tank, and the storage tank 11 is suitable for storing liquid carbon dioxide. The gasifier 12 absorbs heat in the air, thereby gasifying the liquid carbon dioxide into gaseous carbon dioxide. After the pressure is reduced by the pressure reducing valve 13, it flows through the gas flowmeter 14, and then enters the venturi tube 2 to violently mix and react with high-speed tap water to form a gas-liquid mixture. The gas-liquid mixture is added to the raw water pipe 3 through the dosing pipe 4 with a bevel structure, and diffuses to the entire pipeline with the water flow after turbulence is generated. When passing through pipeline accessories such as elbows and valves, the gas-liquid mixture is mixed with the raw water to react. When the water flow changes, the flow state will change, thereby further improving the mixing rate of the gas-liquid mixture and the raw water.

[0044] In this embodiment, the input end of the venturi tube 2 is respectively connected to the carbon dioxide component 1 and the external water supply. According to the venturi principle, by utilizing the existing condition that the tap water pressure in the water supply plant is 0.3Mma and is greater than the pressure of the raw water pipe 3 (0.1Mpa), a high-speed jet can be formed in the venturi tube 2 without a pressure pump. After the carbon dioxide enters the venturi tube 2, it is violently mixed with the tap water in the gas mixing chamber to form a gas-liquid mixture. Specifically, since the carbon dioxide gas is first broken into small bubbles by the high-speed jet in the venturi water ejector and violently mixed with the high-speed jet to form a uniform gas-liquid mixture, the contact area between the gas and water is increased, which is beneficial to the reaction of the gas and water to generate carbonic acid.

[0045] In this embodiment, a first pH detector 6 is provided at the water inlet end of the raw water pipe 3 to detect the pH value of the raw water before addition, and a second pH detector 7 is provided at the water outlet end of the raw water pipe 3 to detect the pH value of the raw water after addition. The dosage of carbon dioxide can be adjusted according to the pH value before addition and the flow value of the raw water, and the purpose of precise addition can be achieved according to the pH value feedback after addition.

[0046] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A pipeline dosing device for carbon dioxide, characterized in that: include: A carbon dioxide component (1), wherein the carbon dioxide component (1) is suitable for generating carbon dioxide; A venturi tube (2), wherein the input end of the venturi tube (2) is respectively connected to the carbon dioxide component (1) and an external water supply, so that the carbon dioxide and the external water supply form a gas-liquid mixture in the venturi tube (2); A raw water pipe (3), one end of the raw water pipe (3) is connected to external raw water, and the other end is connected to external water, and the output end of the venturi tube (2) is connected to the raw water pipe (3) so that the gas-liquid mixture is mixed with the raw water and then transported out.

2. A pipeline dosing device for carbon dioxide according to claim 1, characterized in that: It also comprises a dosing pipe (4), one end of which is connected to the raw water pipe (3), and the other end of which is connected to the output end of the Venturi tube (2).

3. A pipeline dosing device for carbon dioxide according to claim 2, characterized in that: The pipe opening of the dosing pipe (4) is a bevel structure.

4. A pipeline dosing device for carbon dioxide according to claim 3, characterized in that: The groove structure and the fluid in the raw water pipe (3) are set in a back pressure configuration.

5. A pipeline dosing device for carbon dioxide according to claim 1, characterized in that: The carbon dioxide assembly (1) comprises a storage tank (11) and a vaporizer (12), wherein the storage tank (11) is suitable for storing liquid carbon dioxide, and one end of the vaporizer (12) is connected to the storage tank (11), and the other end is connected to the input end of the venturi tube (2).

6. A pipeline dosing device for carbon dioxide according to claim 5, characterized in that: The carbon dioxide component (1) further comprises a pressure reducing valve (13) and a gas flow meter (14), wherein the pressure reducing valve (13) and the gas flow meter (14) are arranged in sequence at a midpoint between an output end of the pressure reducing valve (13) and an input end of the venturi tube (2).

7. A pipeline dosing device for carbon dioxide according to claim 1, characterized in that: The cross section of the output end of the Venturi tube (2) gradually decreases along the water outlet direction.

8. A pipeline dosing device for carbon dioxide according to claim 1, characterized in that: It also comprises a first water flow meter (5), which is arranged at a position between the input end of the venturi tube (2) and the external water supply.

9. A pipeline dosing device for carbon dioxide according to any one of claims 1 to 8, characterized in that: It also comprises a first pH detector (6) and a second pH detector (7), wherein the first pH detector (6) is arranged at the water inlet end of the raw water pipe (3), and the second pH detector (7) is arranged at the water outlet end of the raw water pipe (3).

10. A pipeline dosing device for carbon dioxide according to claim 9, characterized in that: It also comprises a second water flow meter (8), wherein the second water flow meter (8) is arranged on the water inlet end of the raw water pipe (3).

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