Aeration nozzle and preparation box

Abstract

The utility model provides an aeration nozzle and a preparation box, and effectively solves the problems that solid-liquid mixtures such as coal slime and sludge are easy to mix unevenly and easy to layer and deposit during storage, the aeration nozzle is easy to block and difficult to clean, and the like. An air flow channel is arranged in the aeration nozzle, the air flow channel penetrates from the tail part of the aeration nozzle to the head part of the aeration nozzle, and the air flow channel mainly comprises a nozzle inlet, a rear cavity, a throat-shaped cavity, a main body cavity and a spray hole which are sequentially arranged from the tail part of the aeration nozzle to the head part of the aeration nozzle; the diameter of the rear cavity is gradually reduced from the inlet to the outlet, and the diameter of the main body cavity is gradually increased from the inlet to the outlet. The aeration nozzles form a circle of aeration nozzle group, the aeration nozzles in the circle of aeration nozzle group are annularly and uniformly distributed, and the aeration nozzle group is mounted on the inner wall of the preparation box; and a plurality of circles of aeration nozzle groups are arranged and are sequentially distributed from top to bottom.

Description

Technical Field

[0001] This utility model relates to an aeration nozzle and preparation box, which is mainly used in the field of aeration and mixing of sludge or coal sludge in sewage treatment plants, coal washing plants, coal sludge treatment plants and other similar applications. Background Technology

[0002] Sludge is a byproduct of wastewater treatment. It is mainly composed of low-level organic matter such as amino acids, humic acid, bacteria and their metabolites, polycyclic aromatic hydrocarbons, heterocyclic compounds, organic sulfides, volatile odorous substances, and organic fluorides. In addition, it also contains inorganic matter and heavy metals such as mercury, cadmium, and lead.

[0003] Coal slime, a solid waste from coal production, refers to the water-containing coal fragments discharged after coal preparation and washing processes. It is a thick, viscous, black semi-fluid, mainly composed of coal powder, water, and solid particles such as impurities, broken pieces, and gravel.

[0004] Aeration mixing refers to the process of forcibly transferring oxygen from the air into a liquid to obtain sufficient dissolved oxygen. Aeration plays an important role in wastewater or coal slurry treatment. By forcibly introducing air into the wastewater or coal slurry, the wastewater or coal slurry in the chamber comes into contact with the air and is oxygenated. This agitation of the liquid accelerates the transfer of oxygen from the air into the liquid, prevents suspended matter from settling, and enhances the contact between organic matter, microorganisms, and dissolved oxygen. This facilitates the degradation, oxidation, and adsorption of organic matter and toxins in the sludge or coal slurry by the aerobic microorganisms in the activated sludge or coal slurry. The microorganisms also simultaneously obtain nutrients and grow and reproduce.

[0005] When sludge or coal slime has a certain moisture content, it forms a region called the "viscous phase zone." In this zone, the sludge or coal slime is viscous, with water molecules encapsulated by a layer of colloid. This can easily lead to uneven mixing, stratification and sedimentation, clogging of aeration nozzles, and difficulty in cleaning. Utility Model Content

[0006] The purpose of this invention is to overcome the above-mentioned shortcomings in the existing technology and to provide a reasonably designed aeration nozzle and preparation box, which effectively solves the problems that easily occur when storing solid-liquid mixtures such as coal slime and sludge, including uneven mixing, easy stratification and sedimentation, easy clogging of aeration nozzles and difficulty in cleaning.

[0007] The technical solution adopted by this utility model to solve the above problems is: an aeration nozzle, wherein an air flow channel is provided inside the aeration nozzle, the air flow channel extends from the tail of the aeration nozzle to the head, and the air flow channel is mainly composed of a nozzle inlet, a rear cavity, a throat-shaped cavity, a main body chamber and a spray hole arranged sequentially from the tail of the aeration nozzle to the head; the diameter of the rear cavity gradually decreases from its inlet to its outlet, and the diameter of the main body chamber gradually increases from its inlet to its outlet.

[0008] The laryngeal cavity described in this invention has a conical inlet and outlet, and a tubular middle section.

[0009] The aeration nozzle of this utility model includes a nozzle housing, a fastening hexagon, and a threaded connector; the nozzle housing is fixed to the left end of the fastening hexagon, and the threaded connector is fixed to the right end of the fastening hexagon.

[0010] The nozzle housing described in this invention is bullet-shaped.

[0011] The thread of the threaded connector described in this utility model is NPT-1 / 2.

[0012] The present invention describes a plurality of spray holes that are evenly distributed in a ring.

[0013] The inlet and outlet sections of the nozzle described in this invention are both inclined.

[0014] The preparation box of this utility model has multiple aeration nozzles forming a ring of aeration nozzles. The aeration nozzles in the ring of aeration nozzles are evenly distributed in a ring. The aeration nozzle group is installed on the inner wall of the preparation box. The aeration nozzle group has multiple rings, which are arranged vertically.

[0015] The preparation box of this utility model is characterized in that: a stirring device is installed inside the preparation box, and the stirring blades of the stirring device are serrated.

[0016] The preparation box of this utility model is characterized in that: multiple stirring blades form a stirring blade group, and the stirring blades in the stirring blade group are evenly distributed in a ring; multiple stirring blade groups are provided and are distributed vertically.

[0017] Compared with the prior art, this utility model has the following advantages and effects:

[0018] 1) Annular aeration is installed to ensure thorough dissolution and uniform mixing of wastewater and coal slurry during treatment; 2) A sawtooth agitator is installed to ensure mixed flow of wastewater or coal slurry within the storage chamber, preventing sedimentation; 3) Compressed air enters the rear chamber through the nozzle inlet, is accelerated through the throat-shaped cavity, and then enters the main chamber, further increasing the air velocity. Finally, the aeration air is ejected along the nozzle orifice, making the aeration nozzle less prone to clogging and easy to clean. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the front cross-sectional structure of the aeration nozzle in an embodiment of the present invention.

[0020] Figure 2 This is a schematic diagram of the left side of the aeration nozzle in an embodiment of the present invention.

[0021] Figure 3 This is a schematic diagram of the preparation box according to an embodiment of the present invention. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and through embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0023] I. The aeration nozzle 9 of this utility model embodiment includes a nozzle housing 1, a fastening hexagon 2, and a threaded connecting pipe 3.

[0024] The nozzle housing 1 is bullet-shaped with a conical head forming a 45° angle with the horizontal plane. The nozzle housing 1 is fixed to the left end of the fastening hexagon 2, and the threaded connector 3 is fixed to the right end of the fastening hexagon 2. The thread of the threaded connector 3 is NPT-1 / 2. The aeration nozzle 9 is made of NiTroNiC60 stainless steel. The threaded connector 3 is used to connect to the air supply equipment, and the fastening hexagon 2 is used for tightening the wrench.

[0025] An air flow channel is provided inside the aeration nozzle 9. The air flow channel extends from the tail of the aeration nozzle 9 to the head of the aeration nozzle 9. The air flow channel is mainly composed of the nozzle inlet 4, the rear cavity 5, the throat cavity 6, the main body chamber 7, and the spray hole 8 arranged sequentially from the tail to the head of the aeration nozzle.

[0026] The diameter of the posterior cavity 5 gradually decreases from its inlet to its outlet, while the diameter of the main cavity 7 gradually increases from its inlet to its outlet. The inlet of the laryngeal cavity 6 is conical, with an angle of 15° to the horizontal plane, and the outlet is conical, with an angle of 10° to the horizontal plane. The middle part of the laryngeal cavity 6 is tubular, with an inner diameter of 4 mm.

[0027] There are multiple nozzles 8, evenly distributed in a ring. In this embodiment, there are four nozzles 8.

[0028] The inlet section of nozzle 8 is inclined at an angle of 10° to the horizontal plane, and the outlet section is inclined at an angle of 15° to the horizontal plane. The inner diameter of nozzle 8 is 4 mm.

[0029] Compressed air enters the rear cavity 5 from the nozzle inlet 4, accelerates through the throat cavity 6 and enters the main cavity 7, and finally the aeration air is sprayed out along the four evenly distributed nozzles 8, which plays the role of preventing blockage and aeration.

[0030] 2. Multiple aeration nozzles 9 form a ring of aeration nozzles, which are evenly distributed in a circular pattern and installed on the inner wall of the preparation tank 10. Multiple rings of stirring blades are arranged vertically. In this embodiment, three rings of 36 aeration nozzles 9 are arranged around the inner perimeter of the preparation tank 10.

[0031] A stirring device 11 is installed inside the preparation chamber 10. The stirring blades 12 of the stirring device 11 are serrated. Multiple stirring blades 12 form a stirring blade group, and the stirring blades 12 in the stirring blade group are evenly distributed in a ring. Multiple stirring blade groups are arranged vertically.

[0032] Furthermore, it should be noted that the specific embodiments described in this specification may differ in the shape and name of their components. The above description is merely illustrative of the structure of this utility model. All equivalent or simple variations made based on the structure, features, and principles described in this utility model patent concept are included within the protection scope of this utility model patent. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not deviate from the structure of this utility model or exceed the scope defined in these claims, all of which should fall within the protection scope of this utility model.

Claims

1. An aeration nozzle having an air flow passage formed therethrough from a trailing portion to a leading portion of the aeration nozzle, characterised in that: The air flow channel is mainly composed of a nozzle inlet, a rear cavity, a throat cavity, a main cavity and a nozzle hole arranged in sequence from the tail to the head of the aeration nozzle.

2. The aerator nozzle of claim 1, wherein: The inlet and outlet of the throat cavity are both conical, and the middle part of the throat cavity is tubular.

3. The aerator nozzle of claim 1, wherein: The aeration nozzle comprises a nozzle shell, a fastening hexagon and a threaded connector pipe.

4. The aerator nozzle of claim 3, wherein: The nozzle shell is fixed to the left end of the fastening hexagon, and the threaded connector pipe is fixed to the right end of the fastening hexagon.

5. The aerator nozzle of claim 3, wherein: The threaded connector pipe is NPT-1 / 2.

6. The aerator nozzle of claim 1, wherein: The nozzle hole is multiple and uniformly distributed in a ring shape.

7. The aerator nozzle of claim 1, wherein: The inlet and outlet sections of the nozzle hole are both inclined.

8. A preparation box, characterized by: Multiple aeration nozzles according to any one of claims 1-7 form an aeration nozzle group, the aeration nozzles in the aeration nozzle group are uniformly distributed in a ring shape, and the aeration nozzle group is installed on the inner wall of the preparation box.

9. The preparation box according to claim 8, characterized in that: The preparation box is internally provided with a stirring device, and the stirring blades of the stirring device are sawtooth-shaped.

10. The preparation box according to claim 9, characterized in that: Multiple stirring blades form a stirring blade group, and the stirring blades in the stirring blade group are uniformly distributed in a ring shape. Multiple stirring blade groups are arranged in sequence from top to bottom.

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