CN209205076U - The micro equal dispenser apparatus of blending - Google Patents

Abstract

The utility model provides a micro-mixing uniform dispensing device, which can be used for adding and uniformly mixing different materials of different magnitudes such as liquid-solid and solid-solid. The micro-mixing uniform dispensing device includes a material feeding chamber, a feeding pipe and a material spraying nozzle. The feeding chamber is vertically arranged. In the cavity, the upper end of the feed pipe is connected with the material adding device, the lower end is provided with a spray nozzle, and a conical protective plate is arranged above the spray nozzle.

Description

Micro-mixing and dispensing device

Technical field:

The utility model relates to a uniform mixing and distributing device for materials, in particular to a micro-mixing and uniform distributing device, which can be used to uniformly disperse pneumatically transported powder or atomized liquid into flowable solid particles or flowable In the fine block medium, the device can be widely used in the micro-mixing of flowable solid materials in various industries, the uniform mixing of powders carried by airflow or atomizable liquids and solid phases, and participation in reactions. It is used in electromagnetic radiation coal desulfurization, Coal-based additives remove heavy metals, heavy metals are removed by spraying adsorbents in flue gas, and multi-pollutants are removed by spraying oxidants.

Background technique:

At present, in the industry, it is usually necessary to uniformly mix a small amount of solid powder additive into the solid particle material, or to disperse and dope a small amount of liquid into the solid particle, so as to facilitate the subsequent process or reaction requirements, such as adding a small amount of solid strengthening medium to coal combustion , used for electromagnetic radiation coal desulfurization or coal washing. By adding an oxidizing liquid additive for controlling mercury pollution to the raw coal, it is convenient to oxidize zero-valent mercury into oxidized mercury in the subsequent combustion, which is beneficial to enrich the particulate matter and be collected and removed by the dust collector, or in desulfurization The tower is washed and removed by slurry, and other industries also have such needs involved. The uniform dispersion and mixing of micro-powders or liquids in solids is also a major problem in many resource and environmental fields.

Invention content:

The utility model provides a micro-mixing uniform dispensing device, which can be used for mixing liquid-solid, solid-solid and other materials.

The concrete technical scheme of the utility model is as follows:

The micro-mixing uniform dispensing device includes a feeding chamber, a feeding pipe and a feeding nozzle. The feeding chamber is arranged vertically. In the cavity, the upper end of the feed pipe is connected with the material adding device, the lower end is provided with a spray nozzle, and a conical protective plate is arranged above the spray nozzle.

The preferred design of the utility model is that the spray nozzle adopts a structure in which multiple jet branch pipes are installed at the lower end of the feed pipe or multiple nozzles are installed at the lower end of the feed pipe;

The preferred design of the utility model is that the upper and lower ends of the feeding cavity are respectively provided with connecting flanges for the installation and connection of the upper and lower parts;

The preferred design of the utility model is that the feeding chamber adopts a straight cylinder structure, the feeding pipe is inserted into the feeding chamber from the side wall of the feeding chamber, and the feeding pipe is arranged in the middle of the feeding chamber at the lower section.

The preferred design of the utility model is that multiple spray nozzles are inclined downwards and outwards, and the included angle β with the lower section of the feed pipe is 95-160º

The preferred design of the utility model is that the angle between the conical surface of the conical protective disc and the lower part of the feed pipe is 95-160º;

The preferred design of the utility model is that the diameter of the bottom surface of the conical protective disk is slightly larger than the diameter of the conical bottom formed by a plurality of spray nozzles.

The preferred design of the utility model is that, when the feeding cavity adopts a cylindrical structure, the bottom area of the conical protective disk is 25-65% of the cross-sectional area of the cylinder.

Compared with the prior art, the utility model has the following advantages:

1. The micro-mixing uniform dispensing device of the present utility model can be used for adding and uniformly mixing different materials of different magnitudes such as liquid-solid and solid-solid. Uniformly dispersing pneumatically conveyed powder or atomized liquid into flowable solid particles or bulk media is one of the hotspots in current equipment research.

2. The device can be widely used in micro-mixing of flowable solid materials in various industries, airflow carrying powder or atomizable liquid and solid phase homogeneous mixing and participation in reactions, etc. Pneumatic conveying is adopted to facilitate the addition of micro-materials.

3. The utility model has the advantages of simple design structure, ingenious design and convenient use. The mixing of materials is better than the common way of mixing materials. The multi-nozzle design is conducive to the full mixing of materials; the conical protective disc is used to protect the nozzles from corrosion and wear. The device can ensure the uniform dispersion of micro powder or liquid in solid.

Description of the drawings:

Fig. 1 is the overall overall schematic diagram of the micro-mixing uniform distribution device of the embodiment of the utility model, which is also a summary drawing;

Fig. 2 is a schematic structural view of the nozzle of the micro-mixing uniform distribution device of the embodiment of the utility model;

In the figure: 1-feeding cavity; 2-feeding pipe; 3-spraying nozzle; 4-feeding port; 5-feeding port; 6-material adding device; Lan; 9-lower flange.

Detailed ways:

Embodiment one:

As shown in Figure 1, the micro-mixing uniform distribution device of the present invention includes a material feeding chamber 1, a feeding pipe 2 and a material spraying nozzle 3. Port 4, and the lower part is provided with a discharge port 5; the feed pipe 2 is inserted in the material passage chamber, the upper end of the feed pipe is connected with the material adding device 6, and the lower end spray nozzle 3 adopts a multi-nozzle structure. The feeding pipe is connected to the external material adding equipment through the side wall of the feeding chamber. The upper and lower ends of the feed chamber are respectively provided with connecting flanges for the installation and connection of the upper and lower parts. The material adding device 6 can adopt a pneumatic conveying device, and the pneumatic conveying device is used to supply the medium.

The feeding pipe 2 is inserted into the feeding chamber from the side wall of the feeding chamber 1, and the feeding pipe is arranged in the middle of the feeding chamber in the lower section to facilitate feeding. The diameter of the bottom surface of the conical protective disk 7 is slightly larger than the diameter of the conical bottom formed by a plurality of spray nozzles, so that the spray nozzles are covered therein to facilitate protection. The multi-spray head is inclined downwards for easy media ejection. The feeding chamber 1 can be composed of a cylinder, an upper flange 8 and a lower flange 9 .

When the micro-mixing uniform distribution device of the utility model is used, the main body of the solid material medium adopts free fall, and the added micro-powder is fed by pneumatic conveying. If the liquid medium is added, the spray nozzle can be an atomizing nozzle.

Embodiment two:

A further design of this example is that the spray nozzle adopts a structure in which multiple jet branch pipes are installed at the lower end of the material pipe.

Embodiment three:

The further design of this example is that, as shown in Figure 2, the three nozzles of the injection nozzle are inclined downwards and outwards, and the angle β with the lower section of the feed pipe is 120º, and the conical surface of the conical protective disk is in the direction of the feed pipe. The included angle ɑ of the lower section is 125º.

The rotation angle β of the tangential arc of the jet branch pipe is determined comprehensively according to the number of jet branch pipes, the coverage area and the flow rate at the pipe outlet, and the number of jet branch pipes and the radian of the rotating streamline are determined according to the dispersion effect requirements and coverage area. The uniformity of the flow field and the uniform mixing of gas-solid, gas-gas or solid materials can be realized under the joint action of the nozzle jet flow of the micro-mixing uniform distribution device and the vortex formed by the conical protective disk.

Embodiment four:

The further design of this example is that when the material passage adopts a cylindrical structure, the bottom area of the conical protective disc is 45% of the cross-sectional area of the cylinder. The cone of the cone-shaped protective disk is facing the direction of the fluid, which is conducive to the mixing of the solid or atomized liquid carried by the airflow with the flowable solid phase. During solid phase flow mixing, it is mainly used for simultaneous addition of gas or uniform mixing of gas-solid mixture when solid is falling. The cone-shaped protective disk can prevent solid particles or materials from wearing and scouring the jet branch pipe and nozzle, and provide micro-mixing and homogenizing core components to disperse the scattering gap, which is also the core of the homogeneous mixing technology.

Application case one:

Method 1: Directly mix 500g of the micro-iron-containing solid formulation medium 1 powder that enhances electromagnetic radiation absorption with 9.5kg of coal particles (medium 2) to obtain the mixed material A.

Method 2: Use the micro-mixing uniform dispensing device of Embodiment 1 of the present utility model to evenly add micro-quantity solid additives with a fixed formula into solid particle materials, and arrange the device as shown in Figure 1 in the solid feeding pipe, such as medium strengthening Electromagnetic radiation coal desulfurization. Mixed material B was obtained by uniformly dispersing 500 g of iron-containing solid formulation medium powder into 9.5 kg of crushed and free-falling coal particles through a micro-mixing uniform distribution device by means of pneumatic conveying.

The two piles of materials A and B are divided into 10 parts on average, and each randomly selected sample is taken to measure the mass content of the iron-containing medium, and the average value is calculated and compared with the theoretical value. Significantly better than conventional mixing methods.

Application case two:

Method 1: In the coal-based additive mercury removal test, install the micro-mixing uniform distribution device at the bottom of the coal bunker, add 5 kg of calcium bromide solution to 100 tons of coal, and test the calcium bromide content in the coal after adding. this is.

Method 2: When the crushed fine coal falls from the feeding port of the raw coal bunker before the weighing belt conveyor, during the feeding process of the fine coal, a micro-mixing uniform distribution according to the embodiment of the present utility model is set on the feeding pipeline. The device directly sprays and disperses the ultra-fine atomized calcium bromide solution and mixes it fully with fine coal, and finally falls on the weighing belt. The comparison between the uniformity of the material concentration after mixing and the theoretical calculation value is shown in the table below.

It can be seen that the uniformity advantage of material mixing by the device of the present utility model is obvious:

Claims (8)

1. A micro-mixing uniform dispensing device, characterized in that: it includes a feeding chamber, a feeding pipe and a feeding nozzle, the feeding chamber is vertically arranged, the upper part of the feeding chamber is provided with a feeding port, and the lower part is provided with a feeding port; The feeding pipe is inserted into the feeding chamber, the upper end of the feeding pipe is connected with the material adding device, the lower end is provided with a spray nozzle, and a conical protective plate is arranged above the spray nozzle. 2. The micro-mixing uniform dispensing device according to claim 1, characterized in that: the injection nozzle adopts a structure in which multiple jet branch pipes are installed at the lower end of the material pipe or multiple nozzles are installed at the lower end of the feed pipe. 3. The micro-mixing uniform dispensing device according to claim 2, characterized in that: the upper and lower ends of the feed chamber are respectively provided with connecting flanges for the installation and connection of the upper and lower parts. 4. According to any one of claims 1-3, the micro-mixing and dispensing device is characterized in that: the feeding chamber adopts a straight cylinder structure, and the feeding pipe is inserted into the feeding chamber from the side wall of the feeding chamber, and the feeding The lower section of the pipe is located in the middle of the feeding cavity. 5. The micro-mixing uniform distribution device according to claim 4, characterized in that: a plurality of spray nozzles are inclined downward and outward, and the angle β with the lower section of the feed pipe is 95-160°. 6. The micro-mixing uniform dispensing device according to claim 4, characterized in that: the angle between the conical surface of the conical protective disk and the lower section of the feed pipe is 95-160º. 7. The micro-mixing uniform distribution device according to claim 4, characterized in that: the diameter of the bottom surface of the conical protective plate is slightly larger than the diameter of the conical bottom formed by a plurality of spray nozzles. 8. The micro-mixing uniform distribution device according to claim 4, characterized in that: when the feeding chamber adopts a cylindrical structure, the bottom area of the conical protective disk is 25-65% of the cross-sectional area of the cylinder.