Jet flow vertical type gas dissolving device

Abstract

The utility model discloses a jet flow vertical type gas dissolving device, which comprises a mixing chamber, a gas inlet pipe, a gas outlet pipe, a gas inlet pipe and a gas outlet pipe, wherein the mixing chamber comprises a high-pressure gas input end and a liquid input end; the inner diameter of the diffusion chamber is gradually increased from one end to the other end, and the large-diameter end of the diffusion chamber is a liquid output end; the section of the compression section is smaller than that of the mixing chamber, the compression section is communicated between the mixing chamber and the small-diameter end of the diffusion chamber, a throttling block is arranged in the compression section and provided with a plurality of throttling holes penetrating through the mixing chamber and the diffusion chamber, and the middle section of each throttling hole is larger than the section of the end of the throttling hole. According to the air dissolving device, the defects of low air dissolving amount, non-uniform mixing of air and water flow, poor water-air mixing effect and the like of the existing air dissolving device are overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment, in particular to a jet vertical gas dissolving device. Background Art

[0002] The dissolved air device is mainly used in the field of sewage treatment. It uses a water pump to accelerate the flow of water through a water pipe, and inputs air to mix with water to form dissolved air water. Finally, it passes through a diffusion tube and is released in the flotation tank in the form of a jet to mix with the sewage in the flotation tank. The air precipitates in the form of bubbles. The bubbles have a high surface area adsorption capacity and have a good adsorption capacity for suspended matter contained in the sewage in the flotation tank, making the specific gravity of the suspended matter smaller than that of water and forced to float on the water surface to achieve the effect of separation.

[0003] The key factor that determines the performance of the dissolved air device is the air dissolution efficiency. Low air dissolution efficiency not only wastes a lot of resources, but also seriously affects the water treatment effect. The air dissolution efficiency is mainly affected by water depth, gas-water ratio, inlet working pressure, water quality, pH, water temperature, water pressure, air concentration, etc. Since the properties of various types of sewage are different, the best way to improve the air dissolution efficiency of the dissolved air device should be to optimize the design of the dissolved air device itself. The main problems of existing dissolved air devices are that the uneven mixing of air and water leads to poor mixing effect of sewage and gas, and low oxygen dissolution. Utility Model Content

[0004] The present application proposes a jet vertical air dissolving device, which solves the defects of the existing air dissolving device, such as low air dissolution capacity, uneven mixing of air and water flow, and poor water-gas mixing effect.

[0005] The technical solution adopted by the utility model is: a jet vertical dissolved gas device, which includes: a mixing chamber, the mixing chamber includes a high-pressure gas input end and a liquid input end; a diffusion chamber, the inner diameter of the diffusion chamber increases from one end to the other end, and the large diameter end of the diffusion chamber is the liquid output end; a compression section, the cross-section of the compression section is smaller than the mixing chamber, the compression section is connected between the mixing chamber and the small diameter end of the diffusion chamber, a throttling block is arranged in the compression section, the throttling block is provided with a plurality of throttling holes penetrating the mixing chamber and the diffusion chamber, and the middle cross-section of the throttling hole is larger than the end cross-section.

[0006] Furthermore, the throttling block is rotatably arranged in the compression section with the axial direction of the compression section as the axis.

[0007] Furthermore, a bearing is provided between the throttling block and the inner side of the compression section, and the bearing is a plastic bearing.

[0008] Furthermore, the throttle hole is in a swirl shape from one end to the other end.

[0009] Furthermore, a plurality of spoilers are provided in the hybrid.

[0010] Furthermore, a fixing foot is provided at the bottom of the mixing chamber, and the fixing foot is provided with a chemical anchor bolt for fixing the gas dissolving device.

[0011] Furthermore, a nozzle connected to the liquid input end is also provided inside the mixing chamber.

[0012] Preferably, the material of the jet vertical dissolved gas device is 304 stainless steel.

[0013] Compared with the prior art, the utility model sets a throttling block in the compression section and utilizes the throttling holes of the throttling block so that the pressure of the fluid drops suddenly when it needs to pass through the throttling holes. The gas will be cut multiple times to form countless tiny bubbles, so that the oxygen in the gas dissolves in the water faster, and the fluid will form a turbulent effect, further causing severe disturbance to the fluid, so that the gas and liquid are mixed more evenly, and the dissolution rate of the gas in the liquid is accelerated, thus solving the defects of the existing problem of low air dissolution capacity of the gas dissolving device, uneven mixing of air and water flow, and poor water-gas mixing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 It is a schematic diagram of the overall structure of the vertical jet-type dissolved air device of the utility model;

[0016] Figure 2 It is a cross-sectional structural schematic diagram of the vertical jet-type air dissolving device of the utility model;

[0017] Figure 3 Schematic diagram of the exploded structure of the throttle block and the bearing in the utility model;

[0018] Figure 4 It is a schematic diagram of the partial cross-sectional structure of the throttling block in the utility model.

[0019] 1. Mixing chamber; 2. High-pressure gas input end; 3. Liquid input end; 4. Diffusion chamber; 5. Compression section; 6. Throttle block; 7. Throttle hole; 8. Bearing; 9. Spoiler; 10. Fixed foot; 11. Nozzle. DETAILED DESCRIPTION

[0020] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0021] The utility model provides a jet vertical dissolved gas device, combined with the attached Figure 1 , 2 As shown, the jet vertical gas dissolving device in the present application comprises a mixing chamber 1, a compression section 5 and a diffusion chamber 4. The mixing chamber 1, the compression section 5 and the diffusion chamber 4 are arranged from bottom to top, that is, a vertical arrangement. A high-pressure gas input terminal 2 is provided at the bottom of the mixing chamber 1, and a liquid input terminal 3 is provided at the side of the mixing chamber 1. The liquid is transported into the mixing chamber 1 through a pump body. A nozzle 11 connected to the liquid input terminal 3 is also provided on the inside of the mixing chamber 1. The liquid is transported through the nozzle 11, and then the high-pressure gas pumped by the air pump or the fan enters the mixing chamber 1 and mixes with the input liquid. The compression section 5 The small-diameter end of the mixing chamber 1 is connected to the diffusion chamber 4, and after being mixed in the mixing chamber 1, the fluid enters the compression section 5. The cross-section of the compression section 5 is smaller than that of the mixing chamber 1. The compression section 5 produces a throttling effect to increase the fluid flow rate. The turbulence and violent liquid dynamics effects generated will increase the dissolution efficiency of air in the liquid. The fluid after passing through the compression section 5 enters the diffusion chamber 4. The inner diameter of the diffusion chamber 4 increases from the lower end to the upper end. The large-diameter end of the diffusion chamber 4 is the liquid output end. After the fluid enters the diffusion chamber 4 from the compression section 5, the bubbles are denser, so that more water bubbles are ejected.

[0022] Among them, the utility model is provided with a throttling block 6 in the compression section 5, such as Figure 3 , 4 As shown, a plurality of throttling holes 7 are provided in the throttling block 6. The throttling holes 7 are to pass through the mixing chamber 1 and the diffusion chamber 4, and the middle cross-section of the throttling holes 7 needs to be larger than the end cross-section, so that the pressure of the fluid drops suddenly when passing through these throttling holes 7, and the gas will be cut multiple times to form countless tiny bubbles, so that the oxygen in the gas dissolves in the water faster, and the fluid will form a turbulent effect, further causing a violent disturbance to the fluid, so that the gas and liquid are mixed more evenly together; moreover, the middle cross-section of the throttling holes 7 needs to be larger than the end cross-section, so that after the fluid enters the throttling holes 7, the cross-section first becomes smaller, then increases, and then decreases, so that the pressure changes multiple times inside the throttling holes 7, which can further cause the liquid to form turbulence or eddies, and these turbulences and eddies increase the mass transfer surface area of ​​the gas in the liquid, accelerate the dissolution rate of the gas in the liquid, and promote the uniform distribution of the gas.

[0023] Furthermore, the throttling block 6 is rotatably arranged in the compression section 5, and the throttling hole 7 takes the axial direction of the compression section 5 as the axis. A bearing 8 is also arranged between the throttling block 6 and the inner side of the compression section 5. The outer ring of the bearing 8 is fixed to the compression section 5, and the inner ring of the bearing 8 is interference fit with the throttling block 6. In this way, when the fluid passes through the throttling block 6, it can push the throttling block 6 to rotate, and the rotation of the throttling block 6 can make the fluid form a stronger disturbance effect, accelerate the flow of water, and make the water and air mix more fully; and making the throttling hole 7 swirl-shaped from one end to the other end can provide power for the rotation of the throttling block 6, and make the rotation of the throttling block 6 more uniform and stable.

[0024] Preferably, the bearing 8 is a plastic bearing to be more suitable for use in an aquatic environment and to ensure a longer service life.

[0025] Furthermore, the present application also provides a plurality of spoilers 9 in the mixing chamber 1. The spoilers 9 are inclined plates arranged obliquely from bottom to top. The arrangement of the spoilers 9 can increase the disturbance of the fluid, so that the gas and liquid can be mixed more evenly in the mixing chamber 1.

[0026] Furthermore, a fixing foot 10 is provided at the bottom of the mixing chamber 1, and the fixing foot 10 is provided with a chemical anchor bolt for fixing the gas dissolving device. The chemical anchor bolt is used to fix the jet vertical gas dissolving device more stably.

[0027] Preferably, the material of the jet vertical dissolved gas device is 304 stainless steel or above; and the outer shell is treated with corrosion resistance and has sufficient thickness to withstand all loads. The high-pressure gas pipe and liquid pipe are connected to the interface of the dissolved gas device with a high-pressure copy forest to ensure the stability of the interface.

[0028] Unless otherwise specified, all contact surfaces that require water sealing are machined and equipped with sealing rings. The gas inlet and wastewater inlet of the vertical dissolved gas device are on the same level, and the gas inlet and water inlet should be connected to the bottom of the equipment. The wastewater inlet should be connected to the lower side of the equipment. In order to ensure that the flow has multiple vortices, the hydraulic components should be designed and manufactured with multiple edges and corners, and the nominal pressure is 1mPa.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A jet vertical dissolved gas device, characterized in that: include: A mixing chamber, the mixing chamber comprising a high-pressure gas input end and a liquid input end; a diffusion chamber, the inner diameter of the diffusion chamber increases from one end to the other end, and the large-diameter end of the diffusion chamber is the liquid output end; a compression section, the cross-section of the compression section is smaller than the mixing chamber, the compression section is connected between the mixing chamber and the small-diameter end of the diffusion chamber, a throttling block is provided in the compression section, the throttling block is provided with a plurality of throttling holes penetrating the mixing chamber and the diffusion chamber, and the middle cross-section of the throttling hole is larger than the end cross-section.

2. The jet vertical dissolved gas device according to claim 1, characterized in that: The throttling block is rotatably arranged in the compression section with the axial direction of the compression section as the axis.

3. The jet vertical dissolved gas device according to claim 2, characterized in that: A bearing is arranged between the throttling block and the inner side of the compression section, and the bearing is a plastic bearing.

4. The jet vertical dissolved gas device according to claim 2, characterized in that: The throttle hole is in a swirl shape from one end to the other end.

5. The jet vertical dissolved gas device according to claim 1, characterized in that: A plurality of spoilers are also arranged in the mixing chamber.

6. The jet vertical dissolved gas device according to claim 1, characterized in that: The bottom of the mixing chamber is provided with fixing feet, and the fixing feet are provided with chemical anchor bolts for fixing the gas dissolving device.

7. The jet vertical dissolved gas device according to claim 1, characterized in that: The inner side of the mixing chamber is also provided with a nozzle which is communicated with the liquid input end.

8. The jet vertical dissolved gas device according to claim 1, characterized in that: The material of the jet vertical dissolved air device is 304 stainless steel.

Images