Gas-liquid mixing jet device

Abstract

The utility model belongs to the technical field of jet devices, and discloses a gas-liquid mixing jet device which comprises a pipe body, the pipe body is provided with an annular gas inlet structure, and a flow guide structure is arranged in the pipe body. The annular gas inlet structure comprises gas inlet grooves which are formed in the inner wall of the pipe body and distributed annularly, gas inlet frames installed outside the gas inlet grooves, and gas adding pipes which communicate with the gas inlet frames and are located above the gas inlet frames. Through the design of the annular gas inlet structure, gas enters along the gas inlet pipe, then passes through the gas inlet frame and then uniformly enters the pipe body through the gas inlet groove, and compared with a traditional oblique crossing or vertical gas inlet mode, the gas introduction efficiency is greatly improved, and the gas can be uniformly blended into a liquid main flow; the problem of poor local mixing caused by non-uniform gas inlet is effectively avoided, meanwhile, a flow guide structure is matched, liquid and gas entering the pipe body can be preliminarily converged, the spiral flow guide plate guides the gas and the liquid to do spiral motion, and the retention time of the gas and the liquid in the pipe body is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of jet ejector technology, and in particular to a gas-liquid mixing jet ejector. Background Technology

[0002] An ejector is an aeration device designed based on the principle of jet negative pressure. Ejectors are unaffected by various radiations and electromagnetic waves, and have the characteristics of corrosion resistance, shock resistance, explosion resistance, and high temperature resistance. They are suitable for use in various environments, and are small in size, allowing for integration. They can be applied in chemical, petroleum, machinery, power and other domestic and industrial fields. Gas-liquid mixing ejectors are devices that use the jet principle to achieve efficient mixing of gas and liquid, and are widely used in sewage treatment, ozone water preparation, chemical reactions, aquaculture and other fields.

[0003] In the process of realizing this invention, the inventors discovered that the prior art has at least the following problems: In gas-liquid mixing jets, the gas introduction methods are mostly divided into oblique gas introduction and vertical gas introduction. When the gas is introduced obliquely, the gas cannot quickly and fully contact the mainstream liquid due to the tilt angle, and some of it slides along the flow channel wall, resulting in uneven gas distribution and affecting mixing. When the gas is introduced vertically, the gas has a large impact with the mainstream liquid, which easily forms a gas cloud at the inlet, making it difficult to disperse quickly, resulting in low gas introduction efficiency. In sewage treatment, this will cause uneven aeration and affect the decomposition of pollutants by microorganisms; in chemical production, it will lead to incomplete reactions and unstable product quality.

[0004] Therefore, the aforementioned technical problems need to be solved. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, this utility model proposes a gas-liquid mixing jet device, including a tube body, wherein the tube body is provided with an annular air inlet structure and the inside of the tube body is provided with a flow guiding structure;

[0006] The annular air intake structure includes an annularly distributed air intake groove on the inner wall of the pipe, a gas inlet frame installed outside the air intake groove, and a gas filling pipe connected to and located above the gas inlet frame.

[0007] Preferably, the flow guiding structure includes a central pipe installed on the inner wall of the pipe body and a spiral flow guiding plate installed on the inner wall of the central pipe.

[0008] Preferably, the left end of the pipe is the outlet and the right end of the pipe is the inlet, and the inlet is connected to an external water pump.

[0009] Preferably, the pipe body has a constricted section between the water inlet and the gas inlet frame, and an extended section between the gas inlet frame and the water outlet.

[0010] Preferably, when the external water flows at high speed through the inlet, the speed increases sharply and the pressure decreases accordingly when passing through the contraction section, thereby creating a negative pressure at the gas inlet frame, which draws in the gas and mixes it in the expansion section.

[0011] The beneficial effects of this utility model are:

[0012] By designing an annular air intake structure, the gas enters through the air intake pipe, passes through the gas intake frame, and then enters the pipe body evenly through the air intake groove. Compared with the traditional oblique or vertical air intake method, this greatly improves the gas introduction efficiency. The gas can be evenly integrated into the mainstream liquid, effectively avoiding the problem of poor local mixing caused by uneven air intake, and significantly improving the mixing effect.

[0013] At the same time, in conjunction with the flow guiding structure, the liquid and gas entering the pipe can be initially converged, and the spiral guide plate guides the gas and liquid to make spiral motion. This not only prolongs the residence time of gas and liquid in the pipe, but also promotes continuous shearing, collision and mixing between gas and liquid, further enhancing the uniformity of mixing and mass transfer effect. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention. Figure 1 ;

[0015] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0016] Figure 3 This is a schematic cross-sectional view of the entire utility model. Figure 1 ;

[0017] Figure 4 This is a schematic cross-sectional view of the entire utility model. Figure 2 .

[0018] Explanation of reference numerals in the attached figures:

[0019] 1. Pipe body; 11. Outlet; 12. Inlet; 2. Annular air intake structure; 21. Air intake groove; 22. Gas inlet frame; 23. Gas supply pipe; 3. Flow guiding structure; 31. Central pipe; 32. Spiral guide plate. Detailed Implementation

[0020] The following will be combined with the appendix Figure 1 To be continued Figure 4The technical solutions in the embodiments of this utility model are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0021] It should be noted that, in the embodiments of this utility model, the directions shown in the accompanying drawings shall prevail, such as front and back. Figure 1 For the sake of accuracy, the specific details should be as follows: Figure 1 The left side is the front. Figure 1 The right side is the rear; at the same time, as Figure 2 As shown, the horizontal direction is roughly defined as left and right, and the vertical direction is defined as up and down. If a specific orientation changes, the directional indication will also change accordingly. Example 1

[0022] Please see Figure 1 - Figure 4 As shown, this embodiment provides a gas-liquid mixing jet device, including a tube body 1, the tube body 1 is provided with an annular air inlet structure 2 and the tube body 1 is provided with a flow guiding structure 3 inside;

[0023] The annular air intake structure 2 includes an air intake groove 21 arranged in an annular pattern on the inner wall of the pipe body 1, a gas inlet frame 22 installed outside the air intake groove 21, and a gas filling pipe 23 connected to and located above the gas inlet frame 22. Ozone or other substances can be added into the pipe body 1 through the gas filling pipe as needed.

[0024] This invention takes into account that the gas introduction efficiency of existing equipment using oblique or vertical air intake methods is low, which affects the mixing effect. Therefore, by designing an annular air intake structure 2, the gas enters through the air intake pipe and then passes through the gas intake frame 22 and then enters the pipe body 1 evenly through the air intake groove 21. Compared with the traditional oblique or vertical air intake method, the gas introduction efficiency is greatly improved, the gas can be evenly integrated into the mainstream liquid, effectively avoid the problem of poor local mixing caused by uneven air intake, and significantly improve the mixing effect.

[0025] At the same time, in conjunction with the flow guiding structure 3, the liquid and gas entering the pipe body 1 can be initially converged, and the spiral guide plate 32 guides the gas and liquid to make spiral motion. This not only prolongs the residence time of the gas and liquid in the pipe body 1, but also promotes continuous shearing, collision and mixing between the gas and liquid, further enhancing the uniformity of mixing and mass transfer effect. Example 2

[0026] like Figure 2 - Figure 4As shown, the flow guiding structure 3 includes a central pipe 31 installed on the inner wall of the pipe body 1 and a spiral guide plate 32 installed on the inner wall of the central pipe 31. The left end of the pipe body 1 is the outlet 11 and the right end of the pipe body 1 is the inlet 12. The inlet 12 is connected to an external water pump. The section between the inlet 12 and the gas inlet frame 22 of the pipe body 1 is a contraction section, and the section between the gas inlet frame 22 and the outlet 11 is an expansion section. When the external water flows at high speed at the inlet 12, the speed increases sharply and the pressure decreases accordingly when passing through the contraction section, thereby creating a negative pressure at the gas inlet frame 22, thereby drawing in the gas and mixing it in the expansion section.

[0027] It is worth noting that the spiral guide plate 32 is mainly used to guide the gas and liquid to make the gas and liquid spiral motion, so that the mixing is more uniform. In addition, the gas enters the extended section between the frame 22 and the outlet 11, providing sufficient space for the gas and liquid to make the mixing more thorough. Although the air inlet pipe is still vertically downward, after the gas enters the frame 22, it will enter the pipe body 1 through the annularly distributed air inlet grooves 21 under the negative pressure attraction generated by the high-speed flow of the liquid and the flow of its own gas. Compared with the traditional air inlet method, it can mix with the liquid more uniformly.

[0028] Work steps:

[0029] First, an external water pump pumps liquid in at high speed through inlet 12. As the liquid flows through the contraction section between inlet 12 and gas inlet frame 22, the flow velocity increases sharply, and the pressure decreases accordingly, creating a negative pressure at gas inlet frame 22.

[0030] Meanwhile, ozone and other gases can be supplied to the gas inlet frame 22 through the gas supply pipe 23 according to actual needs. After entering the gas inlet frame 22, the gas is attracted by the negative pressure generated by the liquid and its own flow characteristics, and enters the pipe body 1 evenly through the annularly distributed air inlet groove 21. The gas and liquid entering the pipe body 1 are initially converged by the central pipe 31, and then move in a spiral motion under the guidance of the spiral guide plate 32. During this process, shearing and collision are constantly generated between the gas and liquid, the mixing becomes more uniform, and the residence time is extended. Finally, the gas-liquid mixture enters the extension section between the gas inlet frame 22 and the outlet 11. The ample space here provides a more thorough mixing environment for the gas and liquid, further enhancing the mixing effect. Finally, the fully mixed gas-liquid mixture flows out from the outlet 11 at the left end to meet the gas-liquid mixing requirements of various processes.

[0031] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A gas-liquid mixing jet device, comprising a tube body (1), characterized in that: The pipe body (1) is provided with an annular air intake structure (2) and the inside of the pipe body (1) is provided with a flow guiding structure (3). The annular air intake structure (2) includes an air intake groove (21) with an annular distribution opened on the inner wall of the pipe body (1), a gas inlet frame (22) installed outside the air intake groove (21), and a gas filling pipe (23) connected to and located above the gas inlet frame (22).

2. The gas-liquid mixing jet ejector according to claim 1, characterized in that: The flow guiding structure (3) includes a central pipe (31) installed on the inner wall of the pipe body (1) and a spiral flow guiding plate (32) installed on the inner wall of the central pipe (31).

3. A gas-liquid mixing jet according to claim 2, characterized in that: The left end of the pipe (1) is the outlet (11) and the right end of the pipe (1) is the inlet (12), which is connected to an external water pump.

4. A gas-liquid mixing jet ejector according to claim 3, characterized in that: The pipe body (1) has a constricted section between the inlet (12) and the gas inlet frame (22), and an extended section between the gas inlet frame (22) and the outlet (11).

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