CN220926476U - Negative pressure type maintenance-free jet aerator - Google Patents

Abstract

The utility model relates to a negative pressure maintenance-free jet aerator, which comprises a shell, wherein an air inlet connecting flange used for connecting a blower is welded at the upper end of the shell, a sewage suction inlet used for sucking sewage into the shell is welded at the lower end of the shell, the shell is communicated with the air inlet connecting flange to form a first cavity, the outer surface of the shell is provided with a mounting hole in an annular array, a mixing spray pipe is arranged in the mounting hole in a threaded manner, a spiral pipe is arranged on the inner wall of the left end of the mixing spray pipe, a communication port is arranged on the left end surface of the mixing spray pipe, and the communication port is communicated with the first cavity. The utility model solves the problems of improving aeration uniformity, preventing blockage and aging.

Description

Negative pressure type maintenance-free jet aerator

Technical Field

The utility model relates to the technical field of sewage treatment, in particular to a negative pressure maintenance-free jet aerator.

Background

In sewage treatment, one of the used equipment is also the most important equipment used in the treatment link, namely an aerator, which is a microporous aeration oxygenation device. Oxygen is delivered by a blower through a conduit. Enters the cavity in the shell through the pipeline and then blows out the micropore bubbles. The microporous bubbles are uniformly diffused in the whole sewage treatment tank. Thoroughly mixed. The aeration oxygenation effect is achieved, and the aerator is a necessary device for aeration oxygenation of water supply and drainage.

However, the existing aerator has the problem that the maintenance is more frequent, the maintenance of the aerator needs to be carried out regularly, and in order to enable the aerator to be maintenance-free, chinese patent CN212050710U, a maintenance-free sewage treatment aerator is recorded according to the content of the specification: besides the aeration holes arranged on the bevel edge, the aeration holes are also arranged on the upper half part of the polygonal section of the aerator, so that after gas enters the aeration branch pipe, the gas is accumulated on the top of the aeration branch pipe, even if the gas quantity is small, the gas can be uniformly discharged from the aeration holes on the upper part of the aeration branch pipe, and the bottom of the aeration branch pipe is provided with a mud discharging groove, when the sediment is rolled up in the aeration process and mixed into the aeration pipe, the sediment is easy to leak from the mud discharging groove on the bottom of the aeration branch pipe, and the anti-blocking and uniform aeration of the aerator are realized through the arrangement, so that maintenance-free is realized;

Secondly, china patent CN202440368U, a non-blocking and maintenance-free sewage biochemical treatment aerator, points out: the PVC cloth air plate has the advantages of avoiding the phenomena of rubber aging and bulging, and overcoming the defects of easy blockage, high pressure, short service life and the like.

Although the above-mentioned document can play a certain maintenance-free role, there is a certain disadvantage, for example, chinese patent CN212050710U, a maintenance-free sewage treatment aerator, as can be seen from the accompanying drawings, the uniformity of which cannot reach the consistency of the description, and can not be used at all in reality, the uniformity is poor, and secondly, chinese patent CN202440368U, a non-blocking maintenance-free sewage biochemical treatment aerator, which can avoid the problem of aging though the PVC material, has no relatively direct relation with the anti-blocking.

The utility model relates to a negative pressure maintenance-free jet aerator which can improve aeration uniformity and prevent blocking and aging.

Disclosure of utility model

Aiming at the defects of the prior art, the utility model provides a negative pressure maintenance-free jet aerator, which solves the problems of improving aeration uniformity, preventing blockage and preventing aging.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a negative pressure type maintenance-free jet aerator, includes the casing, and the welding of casing upper end has the flange that admits air that is used for connecting the air-blower, and the welding of casing lower extreme has the sewage sunction inlet in with the sewage suction casing, and the casing forms first cavity with the flange intercommunication that admits air, and the annular array has been seted up to the casing outward appearance, and the downthehole screw thread of mounting installs the mixed spray tube, and the spiral pipe is installed to the inner wall of mixed spray tube left end, and the intercommunication mouth has been seted up on mixed spray tube left end surface, and its intercommunication mouth link up with first cavity.

Through the technical scheme, further, the spiral pipe is made of PPH material.

Further, a second cavity is arranged below the first cavity in the shell, and the second cavity is communicated with the sewage suction inlet and the mixing spray pipe.

As an optimized technical scheme, an annular clamping groove is formed in the inner wall of the mounting hole, a clamping spring is mounted on the outer surface of the left end of the mixing spray pipe, and the clamping spring is arranged corresponding to the clamping groove.

Further, the mixing nozzle is installed in the installation hole with a downward inclination angle.

Compared with the prior art, the utility model provides a negative pressure maintenance-free jet aerator, which has the following beneficial effects:

1. Referring to fig. 1-5, according to the utility model, through the mixing spray pipes distributed on the outer surface of the shell, the first cavity is communicated with the mixing spray pipes, the mixing spray pipes are communicated with the second cavity, when gas passes through the air inlet connecting flange and then enters the mixing spray pipes to generate negative pressure, the negative pressure sucks sewage into the mixing spray pipes through the second cavity to mix gas and liquid, and then is sprayed out, as the mixing spray pipes are annularly distributed on the surface of the shell, the uniformity of the mixing spray pipes is obviously improved, and then one end of the mixing spray pipes is provided with the spiral pipe made of PPH material, the PPH material has stronger corrosion resistance, chemical resistance, long service life and impact strength, so that the spiral pipe is not easy to damage, and then the spiral pipe can generate swirling action on the sewage, under stronger negative pressure, the maintenance-free effect of the aerator can be achieved through the spiral pipe made of PPH and the uniformity of gas-liquid aeration, and the problem of poor blocking prevention effect in the prior art is solved.

Drawings

FIG. 1 is a schematic diagram of a negative pressure maintenance-free jet aerator according to the utility model;

FIG. 2 is a schematic diagram of a mounting hole opening position of a negative pressure maintenance-free jet aerator according to the utility model;

FIG. 3 is a schematic diagram of a mixing nozzle of a negative pressure maintenance-free jet aerator according to the utility model;

FIG. 4 is a schematic cross-sectional view of a negative pressure maintenance-free jet aerator according to the present utility model;

Fig. 5 is an enlarged schematic view of a portion of the negative pressure maintenance-free jet aerator of fig. 4 at a.

In the figure: 1. a housing; 2. an air inlet connecting flange; 3. a sewage suction inlet; 4. a mounting hole; 5. a mixing nozzle; 6. a spiral tube; 7. a communication port; 8. and (5) clamping springs.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Examples

Referring to fig. 1-5, the present utility model provides the following technical solutions: the utility model provides a negative pressure type maintenance-free jet aerator, including casing 1, casing 1 upper end welding has the air inlet flange 2 that is used for connecting the air-blower, casing 1 lower extreme welding has the sewage sunction inlet 3 that inhales sewage in casing 1, casing 1 and air inlet flange 2 intercommunication form first cavity, casing 1 outward face is annular array and has seted up mounting hole 4, mixing nozzle 5 is installed to the mounting hole 4 internal thread, spiral pipe 6 is installed to mixing nozzle 5 left end inner wall, communication port 7 has been seted up on mixing nozzle 5 left end surface, its communication port 7 link up with first cavity.

In this embodiment, the specific working principle is as follows: firstly, the external air enters into the first cavity through the air inlet connecting flange 2 and then enters into the mixing spray pipe 5 through the communication port 7, and the mixing spray pipe 5 is communicated with the second cavity, so that negative pressure is generated in the mixing spray pipe 5 when air flows, and then sewage can enter into the mixing spray pipe 5 through the second cavity, so that gas-liquid mixing is realized, and when the sewage passes through the mixing spray pipe 5, the sewage can enter into the spiral pipe 6, so that rotational flow can be generated, the mixing rate of the sewage and the air is increased, and the uniformity of aeration distribution can be improved because the mixing spray pipe 5 is distributed on the surface of the shell 1 in an annular array.

Secondly, the material of spiral pipe 6 is the PPH material, and the PPH material has stronger corrosion resistance, chemical resistance, long service life, impact strength, and then makes its spiral pipe not fragile, and the rethread mixed spray tube 5 of distribution can make this aerator realize maintenance-free.

Referring to fig. 4, a second cavity is disposed below the first cavity in the housing 1, and the second cavity is communicated with the sewage suction inlet 3 and the mixing nozzle 5.

Referring to fig. 3 and 4, it can be seen that an annular clamping groove is formed in the inner wall of the mounting hole 4, a clamping spring 8 is mounted on the outer surface of the left end of the mixing spray pipe 5, the clamping spring 8 is correspondingly arranged with the clamping groove, and the clamping spring 8 is used for reinforcing stability and tightness between the mixing spray pipe 5 and the mounting hole 4.

Referring to fig. 1, the mixing nozzle 5 is installed in the installation hole 4 with a downward inclination angle.

It should be noted that: however, when the hardness of the wastewater is too high, scaling inside the equipment is caused, thereby affecting the product performance. Therefore, when the hardness of the wastewater is too high, the scaling condition of equipment should be checked during overhaul, and the scale thickness of a nozzle part should not exceed 2mm. The descaling method can adopt acid washing, and forbid relief grinding for descaling.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (5)

1. The utility model provides a negative pressure type maintenance-free jet aerator, includes casing (1), and casing (1) upper end welding has air inlet flange (2) that are used for connecting the air-blower, and casing (1) lower extreme welding has sewage sunction inlet (3) in with sewage suction casing (1), its characterized in that: the shell (1) is communicated with the air inlet connecting flange (2) to form a first cavity, the outer surface of the shell (1) is provided with mounting holes (4) in an annular array, the mounting holes (4) are internally provided with mixing spray pipes (5) in a threaded manner, the inner wall of the left end of each mixing spray pipe (5) is provided with a spiral pipe (6), the surface of the left end of each mixing spray pipe (5) is provided with a communication port (7), and the communication ports (7) are communicated with the first cavity.

2. A negative pressure maintenance-free jet aerator according to claim 1, wherein: the spiral tube (6) is made of PPH material.

3. A negative pressure maintenance-free jet aerator according to claim 1, wherein: the inside of the shell (1) is provided with a second cavity below the first cavity, and the second cavity is communicated with the sewage suction inlet (3) and the mixing spray pipe (5).

4. A negative pressure maintenance-free jet aerator according to claim 1, wherein: the inner wall of the mounting hole (4) is provided with an annular clamping groove, the outer surface of the left end of the mixing spray pipe (5) is provided with a clamp spring (8), and the clamp spring (8) is correspondingly arranged with the clamping groove.

5. A negative pressure maintenance-free jet aerator according to claim 1, wherein: the mixing nozzle (5) is installed in the installation hole (4) with a downward inclination angle.