CN216038881U

CN216038881U - Negative pressure type efficient air dissolving device

Info

Publication number: CN216038881U
Application number: CN202122598451.8U
Authority: CN
Inventors: 秦峰; 范军; 陆元州; 王金磊; 徐丽玉; 薛寒
Original assignee: Dalian Zhongshi Environmental Protection Technology Co ltd
Current assignee: Dalian Zhongshi Environmental Protection Technology Co ltd
Priority date: 2021-10-27
Filing date: 2021-10-27
Publication date: 2022-03-15
Anticipated expiration: 2031-10-27

Abstract

The utility model provides a negative pressure type efficient air dissolving device which comprises a pressurizing spray pipe, a mixing three-way pipe, a diffusion spray pipe and a pressurizing sleeve, wherein the pressurizing spray pipe and the diffusion spray pipe are respectively arranged at two straight pipe ends of the mixing three-way pipe, an inner cavity of the diffusion spray pipe is divided into an injection cavity, a diffusion cavity and a pressurizing cavity, a plurality of flow guide grooves are uniformly formed in the outer wall surface of the pressurizing cavity along the axis direction by taking the center of a cross section as the center, a plurality of flow guide holes are uniformly formed in the groove wall of each flow guide groove along the length direction, the pressurizing sleeve is arranged on the outer wall of the pressurizing cavity, a pressurizing outer cavity is formed between the pressurizing sleeve and the outer wall of the pressurizing cavity, a high-pressure liquid input pipe is introduced into the pressurizing sleeve along the tangent direction of the pipe wall, and an evacuation opening is further formed in the pipe wall of the pressurizing sleeve. This is novel through an ingenious structural design, can effectively dissolve gas in liquid, improves gaseous concentration in aqueous, increases gaseous utilization efficiency, reduces and dissolves the gas energy consumption. The structure is simple, so that the production is convenient, the cost is low, and the method is suitable for wide popularization.

Description

Negative pressure type efficient air dissolving device

Technical Field

The utility model relates to the technical field of gas medicament adding equipment, in particular to a negative pressure type efficient gas dissolving device.

Background

The adding of gases such as ozone, chlorine dioxide and the like as important means of the water treatment process plays an important role in the whole water treatment process. The device is widely used for municipal water supply and sewage treatment, and is also suitable for industries such as petroleum, chemical engineering, papermaking, electric power, coal, pharmacy, food and the like. At present, two common process modes for adding gas medicaments are provided, wherein one mode is aeration adding, namely, gas is conveyed to a gas diffusion plate arranged at the bottom of a reaction tank through a conveying pipeline; one is the water injector feeding, namely, gas is supplied to the water injector, and the gas is conveyed into a reaction tank by the water injector. The two modes have the problems of large bubbles of gas in water, low gas dissolving efficiency and low gas utilization rate, increase the use cost of medicaments and low water treatment efficiency.

SUMMERY OF THE UTILITY MODEL

In order to solve the existing problems, the utility model provides a negative pressure type efficient gas dissolving device, which increases the Reynolds number and liquid pressure of gas dissolving liquid, and further increases the mixing degree of gas and liquid.

In order to solve the technical problem, the negative pressure type efficient gas dissolving device comprises a pressurizing spray pipe, a mixing three-way pipe, a diffusion spray pipe and a pressurizing sleeve, wherein the pressurizing spray pipe and the diffusion spray pipe are respectively arranged at two straight pipe ends of the mixing three-way pipe; the diffusion cavity is a flared cavity with a taper; the outer wall surface of the pressurization cavity is uniformly provided with a plurality of diversion trenches along the axis direction by taking the center of a circle of the cross section as the center, the wall of each diversion trench is uniformly provided with a plurality of diversion holes along the length direction, the outer wall of the pressurization cavity is provided with a pressurization sleeve, a pressurization outer cavity is formed between the pressurization sleeve and the outer wall of the pressurization cavity, the pressurization sleeve is introduced into a high-pressure liquid input pipe along the tangential direction of the pipe wall, and the pipe wall of the pressurization sleeve is also provided with a drain hole.

Furthermore, the diffusion cavity of the diffusion nozzle is a tapered cavity, and the inlet aperture of the diffusion cavity is smaller than the outlet aperture.

Furthermore, the plurality of flow guide holes are all vertical to the axis of the pressurizing cavity.

Furthermore, the inlet connecting end of the pressurizing sleeve and the diffusion nozzle is a flange interface.

The utility model has the beneficial effects that: through an ingenious structural design, can effectively dissolve gas in liquid, improve gaseous concentration in aqueous, increase gaseous utilization efficiency, reduce and dissolve the gas energy consumption. The structure is simple, so that the production is convenient, the cost is low, and the method is suitable for wide popularization.

Drawings

Fig. 1 is a sectional view of the present invention;

FIG. 2 is a schematic structural view of the present invention;

fig. 3 is a schematic cross-sectional view of the utility model taken along line a-a.

Reference numbers in the figures: 1. pressurizing the spray pipe; 2. a mixing tee pipe; 3. a diffusion nozzle; 4. a pressurizing sleeve; 5. a high pressure liquid input pipe; 6. emptying the air; 21. a feed inlet; 31. an injection chamber; 32. a diffusion chamber; 33. a pressurization cavity; 34. a diversion trench; 35. a flow guide hole; 41. a pressurized outer chamber; 42. and (4) a flange interface.

Detailed Description

The utility model is further described with reference to the following figures and embodiments. Referring to fig. 1-3, a negative pressure type efficient air dissolving device overcomes the problems of large bubbles of air in liquid, low air dissolving efficiency, low air utilization rate, increased medicament use cost, low water treatment efficiency and the like of the existing air-liquid mixing device.

As a preferred embodiment: the device comprises a pressurizing spray pipe 1, a mixing three-way pipe 2, a diffusion spray pipe 3 and a pressurizing sleeve 4, wherein an inner cavity of the pressurizing spray pipe 1 is a tapered cavity, and the inlet caliber of the inner cavity is larger than the outlet caliber, so that the output liquid at the outlet of the pressurizing spray pipe 1 has a large flow speed. The mixing tee 2 is a tee with the end of its branch pipe selected as the feed inlet 21 for the gas. The pressurizing spray pipe 1 and the diffusion spray pipe 3 are respectively arranged at two straight pipe ends of the mixing three-way pipe 2. The 3 inner chambers of diffusion spray tube divide into and pour into chamber 31, diffusion chamber 32 and pressurization chamber 33 into, it is located the junction of diffusion spray tube 3 and mixing three-way pipe 2 to pour into the chamber 21 into, it is funnel shape mouth and the exit aperture is greater than the entrance aperture to pour into the chamber 31 into, diffusion chamber 31 is the trumpet shape chamber that has the tapering and the entrance aperture is less than the exit aperture, it can increase this section reynolds number Re of liquid to pour into chamber 31 and diffusion chamber 32 and adopt this kind of structure, make the liquid of laminar flow state change to the turbulent flow state, and then increase the degree of mixing of gas and liquid. The outer wall of the pressurizing cavity 33 of the embodiment is provided with 6 diversion trenches 34, each diversion trench 34 is uniformly slotted along the axial direction by taking the section circle center of the pressurizing cavity 33 as the center, as shown in the cross-sectional shape of fig. 3, the wall of each guiding groove 34 is uniformly provided with 12 guiding holes 35 along the length direction, the total number of the guiding holes 35 is 6, each guiding hole 35 is located on the same cross section, the 6 guiding holes 35 are arranged in a centrosymmetric manner, can ensure that the high-pressure water flowing out through the diversion holes 35 flows in a rotational flow manner in the pressurizing cavity 33, can greatly increase the turbulent flow state of the water flow in the pressurizing cavity 33, ensures that the gas and the water are mixed more fully and uniformly, at the same time, under the action of high pressure, the gas is dissolved in the liquid to form gas supersaturation state, after decompression, the gas bubbles can reach the micron level, the utilization efficiency of gas can be effectively improved, the gas loss cost is reduced, and the water treatment effect is greatly improved. The outer wall of the pressurizing cavity 33 is provided with a pressurizing sleeve 4, a pressurizing outer cavity 41 is formed between the pressurizing sleeve 4 and the outer wall of the pressurizing cavity 33, the pressurizing sleeve 4 is introduced into the high-pressure liquid input pipe 5 along the tangential direction of the pipe wall, the high-pressure liquid input pipe 5 is externally connected with high-pressure water, and the high-pressure water is introduced into the pressurizing outer cavity 41 along the tangential direction of the outer wall of the pressurizing outer cavity 41. The high pressure water is introduced into the pressurizing cavity 33 through the diversion trench 34 and the diversion holes 35, so that the turbulent state and pressure of the water flow in the pressurizing cavity 33 can be greatly increased, and the gas and the water are mixed more fully and uniformly. In addition, the pipe wall of the pressurizing sleeve 4 is also provided with a drain opening 6, and the inlet connecting end of the pressurizing sleeve 4 and the diffusion nozzle 2 is a flange interface 42.

The above description is only for 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 should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. A negative pressure type efficient gas dissolving device comprises a pressurizing spray pipe, a mixing three-way pipe, a diffusion spray pipe and a pressurizing sleeve, wherein the pressurizing spray pipe and the diffusion spray pipe are respectively arranged at two straight pipe ends of the mixing three-way pipe; the diffusion cavity is a bell mouth-shaped cavity with a taper; the outer wall surface of the pressurization cavity is uniformly provided with a plurality of diversion trenches along the axis direction by taking the center of a circle of the cross section as the center, the wall of each diversion trench is uniformly provided with a plurality of diversion holes along the length direction, the outer wall of the pressurization cavity is provided with a pressurization sleeve, a pressurization outer cavity is formed between the pressurization sleeve and the outer wall of the pressurization cavity, the pressurization sleeve is introduced into a high-pressure liquid input pipe along the tangential direction of the pipe wall, and the pipe wall of the pressurization sleeve is also provided with a drain hole.

2. The negative-pressure high-efficiency air dissolving device according to claim 1, wherein the diffusion cavity of the pressurizing nozzle is a tapered cavity, and the inlet caliber of the cavity is smaller than the outlet caliber.

3. The negative-pressure efficient air dissolving device according to claim 1, wherein the plurality of flow guiding holes are perpendicular to the axis of the pressurizing cavity.

4. The negative-pressure type efficient air dissolving device according to claim 1, wherein the inlet connection end of the pressurizing sleeve and the diffusion nozzle is a flange interface.