CN211328967U - Venturi mixing device with embedded throat pipe - Google Patents
Venturi mixing device with embedded throat pipe Download PDFInfo
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- CN211328967U CN211328967U CN201921603414.8U CN201921603414U CN211328967U CN 211328967 U CN211328967 U CN 211328967U CN 201921603414 U CN201921603414 U CN 201921603414U CN 211328967 U CN211328967 U CN 211328967U
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Abstract
The utility model relates to a venturi mixing device with an embedded throat pipe, which comprises a venturi pipe, a liquid nozzle and an internal throat pipe; one end of the Venturi tube is an air inlet, the other end of the Venturi tube is an air outlet, and the Venturi tube is sequentially provided with a gas-liquid mixing section, a drainage section, a secondary atomization section and a diffusion section from the air inlet to the air outlet; the gas-liquid mixing section is provided with a liquid nozzle, and the secondary atomization section is internally provided with a built-in throat pipe. The utility model discloses an increase a choke in venturi's turbulent flow interval for the gas-liquid velocity of flow improves venturi's mixing efficiency, and heat exchange efficiency accelerates avoids appearing because of the problem that the mixing is inhomogeneous and cooling efficiency hangs down that the exhaust gas velocity is lower or spent acid flow arouses when great.
Description
Technical Field
The utility model relates to a venturi preconcentrator especially relates to an embedded choke's venturi mixing arrangement who uses as preconcentrator or scrubber.
Background
The steel industry plays an important role in national construction, relates to a plurality of related industries and is related to the national civilization. The large demand of steel plates in China every year enables a plurality of steel mills to increase and expand pickling plants, and even pickling plants are directly constructed in large quantities in various places, and the pickling line is inevitably matched with a regenerated acid production line.
When the steel plate is pickled by hydrochloric acid, ferric oxide on the surface of the plate reacts with the hydrochloric acid to form ferrous chloride or ferric chloride which is dissolved in the pickling solution, the concentration of iron ions in the pickling solution is increased along with the progress of the pickling chemical reaction, and the concentration of free HCL is correspondingly reduced. In order to maintain the concentration of free HCL in the pickling solution and remove the iron ions added to the pickling solution, the spent acid solution is generally continuously fed to an acid regeneration unit, and the regenerated free acid is returned to the pickling line while obtaining iron oxide powder.
In the acid regeneration process by the roasting method, a preconcentrator and a washer are indispensable equipment in the waste acid regeneration process flow, and mainly play roles in preconcentrating the waste acid liquid and cooling roasting gas. The preconcentrator and the scrubber in the prior art easily cause the problems of uneven mixing and low cooling efficiency when the flow rate of waste gas of the roasting furnace is low or the flow rate of the waste acid is high due to the self structure.
Disclosure of Invention
The utility model provides an embedded venturi mixing arrangement of choke formula through increase a choke in venturi's turbulent flow interval for the gas-liquid velocity of flow improves venturi's mixing efficiency, and heat exchange efficiency accelerates avoids appearing because of the problem that the mixing that the exhaust gas velocity is lower or spent acid flow arouses when great is inhomogeneous and cooling efficiency hangs down.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a venturi mixing device with an embedded throat pipe comprises a venturi pipe, a liquid nozzle and an internal throat pipe; one end of the Venturi tube is an air inlet, the other end of the Venturi tube is an air outlet, and the Venturi tube is sequentially provided with a gas-liquid mixing section, a drainage section, a secondary atomization section and a diffusion section from the air inlet to the air outlet; the gas-liquid mixing section is provided with a liquid nozzle, and the secondary atomization section is internally provided with a built-in throat pipe.
The venturi tube is a straight tube section at the air inlet, and the outer side of the straight tube section is connected with an external gas pipeline through a flange.
The gas-liquid mixing section is a section of conical cylinder, and the diameter of the cylinder is gradually enlarged from one end of the gas inlet to one end of the drainage section; a plurality of liquid nozzles are arranged in the gas-liquid mixing section along the circumferential direction.
The axis of the liquid nozzle is vertical to the inner wall of the gas-liquid mixing section cylinder.
The number of the liquid nozzles is at least 4.
The drainage section is a section of conical cylinder, the diameter of the cylinder of the drainage section from one end of the gas-liquid mixing section to one end of the secondary atomization section is gradually reduced, and the minimum diameter of the drainage section is smaller than that of the gas-liquid mixing section.
The secondary atomization section is a straight section cylinder, the built-in throat pipe is fixed in the middle of the secondary atomization section through circumferential support, and an annular channel is reserved between the built-in throat pipe and the secondary atomization section cylinder.
The built-in throat pipe is arranged at one end, close to the drainage section, of the secondary atomization section, the axial section of the inner wall of the built-in throat pipe barrel is in a smooth and continuous hyperbolic shape, and the diameter of a through hole in the central section of the built-in throat pipe is the smallest along the axial direction.
The circumferential support is a spoke-shaped support consisting of a plurality of connecting rods arranged between the built-in throat pipe and the secondary atomizing section cylinder along the circumferential direction.
The diffusion section is a section of horn-shaped cylinder, and the diameter of the cylinder is gradually enlarged from one end of the secondary atomization section to the air outlet.
Compared with the prior art, the beneficial effects of the utility model are that:
through increase a choke in venturi's turbulent flow interval for the gas-liquid velocity of flow improves venturi's mixing efficiency, and heat exchange efficiency accelerates avoids appearing because of the problem that the mixing is inhomogeneous and the cooling efficiency is low that arouses when exhaust gas velocity is lower or spent acid flow is great.
Drawings
Fig. 1 is a schematic structural view of a venturi mixing device with an embedded throat pipe according to the present invention.
Fig. 2 is a view a-a in fig. 1.
In the figure: 1. venturi tube 11, gas inlet 12, gas-liquid mixing section 13, flow guiding section 14, secondary atomizing section 15, diffusing section 16, gas outlet 2, built-in throat pipe 3 and liquid nozzle 4 are circumferentially supported
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:
as shown in fig. 1, the venturi mixing device with the built-in throat pipe of the present invention comprises a venturi tube 1, a liquid nozzle 3 and a built-in throat pipe 2; one end of the Venturi tube 1 is an air inlet 11, the other end of the Venturi tube 1 is an air outlet 16, and the Venturi tube 1 is sequentially provided with a gas-liquid mixing section 12, a drainage section 13, a secondary atomization section 14 and a diffusion section 15 from the air inlet 11 to the air outlet 16; the gas-liquid mixing section 12 is provided with a liquid nozzle 3, and the secondary atomization section 14 is internally provided with a built-in throat 2.
The venturi tube 1 is a straight tube section at the air inlet 11, and the outer side of the straight tube section is connected with an external gas pipeline through a flange.
The gas-liquid mixing section 12 is a section of conical cylinder, and the diameter of the cylinder is gradually enlarged from one end of the gas inlet 11 to one end of the drainage section 13; a plurality of liquid nozzles 3 are arranged in the gas-liquid mixing section 12 along the circumferential direction.
The axis of the liquid nozzle 3 is vertical to the inner wall of the gas-liquid mixing section cylinder.
The number of the liquid nozzles 3 is at least 4.
The drainage section 13 is a section of conical cylinder, the diameter of the cylinder of the drainage section 13 is gradually reduced from one end of the gas-liquid mixing section 12 to one end of the secondary atomization section 14, and the minimum diameter of the drainage section 13 is smaller than that of the gas-liquid mixing section 12.
The secondary atomization section 14 is a straight section cylinder, the built-in throat 2 is fixed in the middle of the secondary atomization section 14 through the circumferential support 4, and an annular channel is reserved between the built-in throat 2 and the secondary atomization section cylinder.
The built-in throat pipe 2 is arranged at one end, close to the drainage section 13, of the secondary atomization section 14, the axial section of the inner wall of the built-in throat pipe barrel is in a smooth and continuous hyperbolic shape, and the diameter of a through hole in the central section of the built-in throat pipe is the smallest along the axial direction.
The circumferential support 4 is a spoke-shaped support (as shown in fig. 2) composed of a plurality of connecting rods arranged between the built-in throat pipe 2 and the cylinder body of the secondary atomizing section 14 along the circumferential direction.
The diffusion section 15 is a section of horn-shaped cylinder, and the diameter of the section of cylinder gradually expands from one end of the secondary atomization section 14 to the air outlet 16.
In a venturi mixing arrangement of embedded choke, air inlet 11 is established to the outer end of gas-liquid mixture section 12, and its barrel evenly sets up a plurality of liquid nozzle 3 along circumference, has a contained angle between hydrojet direction and the gas inflow direction to the hydrojet direction is towards the barrel center.
The utility model relates to a venturi mixing arrangement of embedded choke's theory of operation as follows: the introduced gas enters the gas-liquid mixing section 12 through the gas inlet 11, at this time, the introduced liquid is sprayed out of the solid conical atomized liquid column through the liquid nozzle 3, the atomized liquid column and the gas are mixed for the first time in the gas-liquid mixing section 12, and due to the limitation of the spraying angle, speed and spraying range of the liquid, the introduced gas and the introduced liquid cannot be completely mixed in the gas-liquid mixing section 12. The gas-liquid mixture continues to flow towards one end of the gas outlet 16, and the gas-liquid mixture is accelerated to pass through and enter the secondary atomization section 14 due to the fact that the drainage section 13 has a contracted cross section; in the secondary atomization section 14, the gas-liquid mixture passes through the built-in throat 2 in two parts, one part of the gas-liquid mixture flows through the annular channel at the periphery of the built-in throat 2, the other part of the gas-liquid mixture flows through the central channel in the built-in throat 2, the gas-liquid mixture passing through the central channel of the built-in throat 2 is accelerated again and then is mixed with the gas-liquid mixture flowing out through the annular channel at the periphery of the built-in throat 2 again, and the gas-liquid mixing efficiency is greatly improved in the secondary mixing process.
A venturi mixing arrangement of embedded choke formula can be used as venturi preconcentrator or venturi washing device.
The above description is only the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the concept of the present invention within the technical scope disclosed in the present invention.
Claims (10)
1. A venturi mixing device with an embedded throat pipe is characterized by comprising a venturi pipe, a liquid nozzle and an internal throat pipe; one end of the Venturi tube is an air inlet, the other end of the Venturi tube is an air outlet, and the Venturi tube is sequentially provided with a gas-liquid mixing section, a drainage section, a secondary atomization section and a diffusion section from the air inlet to the air outlet; the gas-liquid mixing section is provided with a liquid nozzle, and the secondary atomization section is internally provided with a built-in throat pipe.
2. The venturi mixing device of claim 1, wherein the venturi tube is a straight tube at the air inlet, and the outer side of the straight tube is connected to an external gas pipeline through a flange.
3. The venturi mixing device according to claim 1, wherein the gas-liquid mixing section is a conical cylinder, and the diameter of the cylinder gradually increases from the gas inlet end to the flow guiding section end; a plurality of liquid nozzles are arranged in the gas-liquid mixing section along the circumferential direction.
4. The venturi mixing device of claim 1 or 3, wherein the axis of the liquid nozzle is perpendicular to the inner wall of the gas-liquid mixing section cylinder.
5. An inline venturi mixing device according to claim 1 or 3, wherein the number of liquid nozzles is at least 4.
6. The venturi mixing device of claim 1, wherein the flow guiding section is a conical cylinder, and the diameter of the cylinder of the flow guiding section decreases gradually from one end of the gas-liquid mixing section to one end of the secondary atomizing section, and the minimum diameter of the flow guiding section is smaller than that of the gas-liquid mixing section.
7. The venturi mixing device of claim 1, wherein the secondary atomizing section is a straight cylinder, the internal throat is fixed in the middle of the secondary atomizing section by circumferential support, and an annular channel is left between the internal throat and the cylinder of the secondary atomizing section.
8. The venturi mixing device with the built-in throat pipe according to claim 1 or 7, wherein the built-in throat pipe is arranged at one end of the secondary atomizing section close to the drainage section, the shape of the axial section of the inner wall of the cylinder body of the built-in throat pipe is a smooth and continuous hyperbolic shape, and the diameter of the through hole at the central section of the built-in throat pipe is the smallest along the axial direction.
9. The venturi mixing device according to claim 7, wherein the circumferential support is a spoke support consisting of a plurality of connecting rods circumferentially disposed between the internal throat and the secondary atomizing section cylinder.
10. The venturi mixing device according to claim 1, wherein the diffuser section is a flared barrel, and the diameter of the barrel gradually increases from one end of the secondary atomizing section to the outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921603414.8U CN211328967U (en) | 2019-09-24 | 2019-09-24 | Venturi mixing device with embedded throat pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921603414.8U CN211328967U (en) | 2019-09-24 | 2019-09-24 | Venturi mixing device with embedded throat pipe |
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| CN211328967U true CN211328967U (en) | 2020-08-25 |
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| CN201921603414.8U Active CN211328967U (en) | 2019-09-24 | 2019-09-24 | Venturi mixing device with embedded throat pipe |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112452575A (en) * | 2020-11-19 | 2021-03-09 | 西安热工研究院有限公司 | Rotational flow atomizing nozzle |
| CN113893723A (en) * | 2021-12-13 | 2022-01-07 | 星诺大气环境科技(天津)有限公司 | Method for mixing demisting agent and air mass |
| CN114542977A (en) * | 2022-02-28 | 2022-05-27 | 清华大学 | Natural gas hydrogen-mixing device |
-
2019
- 2019-09-24 CN CN201921603414.8U patent/CN211328967U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112452575A (en) * | 2020-11-19 | 2021-03-09 | 西安热工研究院有限公司 | Rotational flow atomizing nozzle |
| CN112452575B (en) * | 2020-11-19 | 2021-07-13 | 西安热工研究院有限公司 | Rotational flow atomizing nozzle |
| CN113893723A (en) * | 2021-12-13 | 2022-01-07 | 星诺大气环境科技(天津)有限公司 | Method for mixing demisting agent and air mass |
| CN114542977A (en) * | 2022-02-28 | 2022-05-27 | 清华大学 | Natural gas hydrogen-mixing device |
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