Anti-blocking aeration head for sewage treatment

Abstract

The utility model belongs to the technical field of sewage treatment equipment, and particularly relates to an anti-blocking aeration head for sewage treatment, which comprises an aeration head body, the aeration head body comprises an upper shell and a lower shell which form a closed cavity; a plurality of flow dividing holes are formed in the upper shell, and air outlet nozzles are arranged at the flow dividing holes; the air outlet nozzle comprises a T-shaped cylinder of which the center is provided with an air passage hole and the top surface is provided with a first annular groove; a plurality of air outlet holes are formed in the groove bottom of the first annular groove; the top face of the T-shaped cylinder is covered with an elastic packing piece, the top of the T-shaped cylinder is sleeved with a U-shaped top cover, and a through hole is formed in the U-shaped top cover. An air inlet pipe is arranged on the bottom surface of the lower shell. The aeration head can be suitable for sewage treatment by a blast aeration method, impurities in a water body are not easy to enter an internal flow channel of the air outlet nozzle in the use process, the risk of blockage of the air outlet flow channel can be reduced, the aeration effect is favorably ensured, the frequency of manually cleaning the aeration head is reduced, and the sewage treatment cost is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment equipment, in particular to an anti-blocking aeration head for sewage treatment. Background Art

[0002] Air aeration is a common method for environmental engineering sewage treatment; the air aeration system consists of a blower, air delivery pipeline and aeration head. The aeration head is usually installed at the bottom of the aeration tank. The blower and air delivery pipeline supply air to the aeration head. The air is divided into bubbles through the aeration head and released into the water of the aeration tank. As the bubbles rise from the bottom of the tank, the oxygen in them will gradually dissolve in the water and become dissolved oxygen, which will be used by active microorganisms in the water to achieve sewage treatment.

[0003] The aeration head is installed at the bottom of the aeration tank. Impurities such as scum and sludge in the water body can easily clog the air holes on the aeration head, which in turn reduces the aeration effect of the aeration head and causes the sewage treatment to fail to meet the standards. If the aeration head is cleaned manually frequently, the sewage treatment cost will increase. Utility Model Content

[0004] In view of the above deficiencies in the prior art, the technical problem to be solved by the utility model is: to provide an anti-blocking aeration head for sewage treatment, the air outlet of the aeration head is not easily blocked, which is conducive to ensuring the aeration effect, reducing the frequency of manual cleaning of the aeration head, and saving sewage treatment costs.

[0005] The utility model is realized by the following technical solutions:

[0006] An anti-blocking aeration head for sewage treatment comprises an aeration head body, wherein the aeration head body is composed of an upper shell and a lower shell, and a closed cavity is formed between the upper shell and the lower shell;

[0007] The upper shell is provided with a plurality of flow diversion holes communicating with each other inside and outside, and each flow diversion hole on the top surface of the upper shell is provided with an air outlet nozzle;

[0008] Each air outlet nozzle comprises a T-shaped cylinder, the center of which is provided with an airway hole running through from top to bottom, and the airway hole is connected with the closed cavity through a diversion hole;

[0009] A first annular groove is formed on the top surface of each T-shaped cylinder, the first annular groove is coaxial with the airway hole and is located outside the airway hole; a plurality of air outlet holes penetrating downward through the T-shaped cylinder are formed at the bottom of the first annular groove, and the plurality of air outlet holes are evenly distributed in a circular shape with the central axis of the T-shaped cylinder as the center;

[0010] The top surface of each T-shaped cylinder is covered with an elastic sealing piece; the top of each T-shaped cylinder is fitted with a U-shaped top cover with an opening facing downward, and the inner wall of the U-shaped top cover is threadedly connected to the outer wall of the T-shaped cylinder for easy disassembly and assembly; a through hole is opened at the center of the top of the U-shaped top cover, and the inner diameter of the through hole is larger than the inner diameter of the first annular groove and smaller than the outer diameter of the first annular groove. The inner wall surface of the top of the U-shaped top cover and the top surface of the T-shaped cylinder clamp the elastic sealing piece, and the elastic sealing piece seals the gap between the inner wall surface of the top of the U-shaped top cover and the top surface of the T-shaped cylinder;

[0011] An air inlet pipe is arranged on the bottom surface of the lower shell, and the interior of the air inlet pipe is communicated with the closed cavity. Specifically, an air inlet which runs through from top to bottom is provided at the center position of the lower shell, and the top end of the air inlet pipe is installed at the air inlet on the bottom surface of the lower shell, and the interior of the air inlet pipe is communicated with the air inlet. The air inlet pipe is welded or integrally formed with the lower shell, and the bottom end of the air inlet pipe of the aeration head can be installed on the air delivery pipe. An external thread is provided on the outer side wall of the bottom end of the air inlet pipe, and the air inlet pipe is threadedly connected with the air delivery pipe, so as to facilitate the disassembly and assembly of the aeration head;

[0012] When the aeration head is used, it is installed on the air delivery pipe at the bottom of the aeration tank. When the blower is not supplying air, under the action of the water pressure in the aeration tank, the middle part of the elastic sealing piece is squeezed on the top surface of the T-shaped cylinder to form a seal to prevent impurities in the water body from flowing back along the air outlet, the first annular groove, the gap between the elastic sealing piece and the T-shaped cylinder, and the airway hole with sewage to cause blockage of the air outlet channel; when the blower is supplying air, the air in the air delivery pipe enters the closed cavity through the air inlet pipe, and the air in the closed cavity is diverted through each diversion hole, and the air After entering the airway hole, the elastic sealing piece is squeezed under the action of air pressure, and the air flows into the first annular groove through the gap between the bottom surface of the elastic sealing piece and the top surface of the T-shaped cylinder, and finally is diverted from the first annular groove to each air outlet hole, and the air provided by the blower enters the water body through each air outlet hole; after the blower stops supplying air, the elastic sealing piece clings to the top surface of the T-shaped cylinder under the action of pressure difference, thereby blocking the passage between the first annular groove and the airway hole, preventing water from backflowing into the airway hole, and preventing impurities in the water body from entering the internal flow channel of the air outlet nozzle and causing blockage.

[0013] Furthermore, the upper shell and the lower shell are both dome-shaped; when impurities fall on the top surface of the upper shell, the impurities can move downward under the disturbance of the water or the vibration of the aeration head when exhausting air, which can reduce the precipitation and accumulation of impurities on the top surface of the upper shell.

[0014] Furthermore, the upper shell includes a dome-shaped top plate, the outer edge of the dome-shaped top plate is integrally formed with a first annular flange, and the inner edge bottom surface of the first annular flange is integrally formed with an annular boss;

[0015] The lower shell comprises a dome-shaped bottom plate, the outer edge of the dome-shaped bottom plate is integrally formed with a second annular flange, the inner edge top surface of the second annular flange is integrally formed with an annular groove body, and the top surface of the annular groove body is provided with a second annular groove that matches the annular boss concavely and convexly;

[0016] When the upper shell and the lower shell are buckled together, the first annular flange and the second annular flange are detachably connected by a plurality of bolt and nut assemblies, the annular boss and the second annular groove on the annular groove body are concave-convex matched, and a concave-convex annular sealing ring is arranged between the annular boss and the annular groove body, so that a closed cavity is formed between the upper shell and the lower shell.

[0017] Furthermore, each of the diversion holes has an internal thread on the upper inner side wall, and each of the T-shaped cylinders has an external thread on the bottom outer side wall. The T-shaped cylinder is installed at the diversion hole on the top surface of the upper shell body by means of a threaded connection, which facilitates the disassembly and assembly of the air outlet nozzle and the maintenance and replacement of the air outlet nozzle.

[0018] Furthermore, the top surface of the T-shaped cylinder inside the first annular groove is in the shape of an upwardly convex arc. When the T-shaped cylinder, the U-shaped top cover and the elastic sealing piece are assembled, the convex part of the top surface of the T-shaped cylinder presses the middle part of the elastic sealing piece upward, causing the elastic sealing piece to deform under force, thereby forming a seal between the bottom surface of the elastic sealing piece and the top surface of the T-shaped cylinder in the initial state.

[0019] Furthermore, the top surface of the elastic sealing piece is glued and fixed to the top inner wall of the U-shaped top cover. When the U-shaped top cover and the elastic sealing piece are installed on the top of the T-shaped cylinder, as the raised portion of the top surface of the T-shaped cylinder presses the middle portion of the elastic sealing piece upward, the outer edge of the elastic sealing piece is glued and fixed to the top inner wall of the U-shaped top cover, so that the outer edge portion of the elastic sealing piece does not shrink inward, thereby ensuring that the outer edge portion of the elastic sealing piece is clamped between the top surface of the T-shaped cylinder and the top inner wall of the U-shaped top cover to form a seal.

[0020] Furthermore, a plurality of limiting columns are arranged on the inner side wall of the top of the U-shaped top cover, and the plurality of limiting columns are evenly distributed in a circular ring shape with the central axis of the U-shaped top cover as the center; a third annular groove is arranged on the top surface of the T-shaped cylinder, and the third annular groove is coaxial with the T-shaped cylinder and is located on the outside of the first annular groove; the bottom end of each limiting column penetrates the elastic sealing piece and extends into the third annular groove; when the U-shaped top cover and the elastic sealing piece are installed on the top end of the T-shaped cylinder, the elastic sealing piece is placed inside the U-shaped top cover, and each limiting column is ensured to be in a state where the elastic sealing piece is inserted into the inner part of the U-shaped top cover. The positioning posts all penetrate the elastic sealing piece, and each limiting post limits the elastic sealing piece. When the U-shaped top cover is threadedly installed on the top of the T-shaped cylinder, the limiting post extends into the third annular groove. Under the limiting action of each limiting post, during the process of screwing in the U-shaped top cover, when the top surface convex part of the T-shaped cylinder presses the middle part of the elastic sealing piece upward, the outer edge part of the elastic sealing piece will not shrink inwardly, ensuring that the outer edge part of the elastic sealing piece is clamped between the top surface of the T-shaped cylinder and the top inner wall of the U-shaped top cover to form a seal.

[0021] Furthermore, the elastic sealing piece is made of an anti-corrosion elastic rubber material and can produce elastic deformation when squeezed by a pressure difference.

[0022] Compared with the prior art, the utility model has the following beneficial effects:

[0023] The aeration head can be used for sewage treatment by air blast aeration method, and it is installed on the air delivery pipe at the bottom of the aeration tank to aerate the water body; in the initial state, when the blower does not supply air, under the action of the water pressure in the aeration tank, the bottom surface of the elastic sealing piece is tightly attached to the top surface of the T-shaped cylinder to form a seal, and the flow channel between the first annular groove and the airway hole is closed, which can reduce the sewage from the first annular groove to flow into the airway hole, and prevent impurities in the water body from entering the inside of the air outlet nozzle to cause the outlet flow channel to be blocked; during aeration, the blower outputs high-pressure air, and the air in the air delivery pipe enters the closed cavity through the air inlet pipe, and the air in the closed cavity is diverted from each diversion hole to the airway hole of each T-shaped cylinder. Under the action of the air pressure of the high-pressure air, the air in the airway hole presses the middle part of the elastic sealing piece upward, so that the bottom surface of the elastic sealing piece and the T-shaped cylinder are closely connected ... The gap between the top surfaces of the bodies is widened, and the air in the airway hole flows into the first annular groove, and is finally diverted from the first annular groove to each air outlet, and the air provided by the blower enters the water body through each air outlet for aeration; after the blower stops supplying air, the air pressure in the airway hole decreases, and the water pressure on the middle part of the elastic sealing piece is greater than the air pressure. Under the action of the water pressure, the middle part of the elastic sealing piece is tightly attached to the top surface of the T-shaped cylinder, thereby blocking the passage between the first annular groove and the airway hole, preventing a large amount of water from backflowing into the airway hole, and preventing impurities in the water body from entering the inside of the air outlet nozzle and causing blockage of the outlet flow channel; during the use of the aeration head, impurities in the external water body are not easy to enter the internal flow channel of the air outlet nozzle, which can reduce the risk of blockage of the outlet flow channel, which is conducive to ensuring the aeration effect, reducing the frequency of manual cleaning of the aeration head, and saving sewage treatment costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a cross-sectional structural schematic diagram of the utility model.

[0025] Figure 2 for Figure 1 A schematic diagram of the enlarged local structure in the middle.

[0026] Figure 3 for Figure 1 Enlarged schematic diagram of the local structure at point B in the middle.

[0027] The names of the components in the figure are: 1. Aeration head body 1.1, upper shell 1.1.1, dome-shaped top plate 1.1.2, first annular flange 1.1.3, annular boss 1.2, lower shell 1.2.1, dome-shaped bottom plate 1.2.2, second annular flange 1.2.3, annular trough body 2, closed cavity 3, air outlet nozzle 3.1, T-shaped cylinder 3.2, U-shaped top cover 3.3, elastic sealing piece 4, air inlet pipe 5, rib plate 6, second annular groove 7, concave-convex annular sealing ring 8, bolt and nut assembly 9, diverter hole 10, airway hole 11, first annular groove 12, limit column 13, third annular groove 14, air outlet. DETAILED DESCRIPTION

[0028] The present invention is further described below through specific embodiments in conjunction with the accompanying drawings, but the present invention is not limited thereto. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

[0029] The anti-blocking aeration head for sewage treatment described in this embodiment is as follows: Figures 1 to 3 As shown, the aeration head body 1 is composed of an upper shell 1.1 and a lower shell 1.2. A closed cavity 2 is formed between the upper shell 1.1 and the lower shell 1.2. Both the upper shell 1.1 and the lower shell 1.2 are dome-shaped. When impurities fall on the top surface of the upper shell 1.1, the impurities falling on the top surface of the upper shell 1.1 can move to a lower place under the disturbance of the water body or the vibration of the aeration head when the air is discharged, which can reduce the precipitation and accumulation of impurities on the top surface of the upper shell 1.1.

[0030] The upper shell 1.1 comprises a dome-shaped top plate 1.1.1, the outer edge of the dome-shaped top plate 1.1.1 is integrally formed with a first annular flange 1.1.2, and the inner edge bottom surface of the first annular flange 1.1.2 is integrally formed with an annular boss 1.1.3;

[0031] The lower shell 1.2 comprises a dome-shaped bottom plate 1.2.1, the outer edge of the dome-shaped bottom plate 1.2.1 is integrally formed with a second annular flange 1.2.2, the inner edge top surface of the second annular flange 1.2.2 is integrally formed with an annular groove 1.2.3, and the top surface of the annular groove 1.2.3 is provided with a second annular groove 6 that is concave-convexly matched with the annular boss 1.1.3;

[0032] When the upper shell 1.1 is buckled with the lower shell 1.2, the first annular flange 1.1.2 and the second annular flange 1.2.2 are detachably connected by a plurality of bolt and nut assemblies 8, the annular boss 1.1.3 is concave-convexly matched with the second annular groove 6 on the annular groove body 1.2.3, and a concave-convex annular sealing ring 7 is provided between the annular boss 1.1.3 and the annular groove body 1.2.3, and a closed cavity 2 is formed between the dome-shaped top plate 1.1.1, the dome-shaped bottom plate 1.2.1, the annular boss 1.1.3 and the annular groove body 1.2.3;

[0033] A plurality of flow diversion holes 9 communicating with each other inside and outside are provided on the dome-shaped top plate 1.1.1 of the upper shell 1.1, and an air outlet nozzle 3 is provided at each flow diversion hole 9 on the top surface of the dome-shaped top plate 1.1.1 of the upper shell 1.1; each air outlet nozzle 3 comprises a T-shaped cylinder 3.1, and an airway hole 10 penetrating from top to bottom is provided at the center of the T-shaped cylinder 3.1, and the airway hole 10 is communicated with the closed cavity 2 through the flow diversion hole 9;

[0034] A first annular groove 11 is formed on the top surface of each T-shaped cylinder 3.1, and the first annular groove 11 is coaxial with the airway hole 10 and is located outside the airway hole 10; a plurality of air outlet holes 14 are formed at the bottom of the first annular groove 11 and penetrate downwardly through the T-shaped cylinder 3.1, and the plurality of air outlet holes 14 are evenly distributed in a circular shape with the central axis of the T-shaped cylinder 3.1 as the center;

[0035] The top surface of each T-shaped cylinder 3.1 is covered with an elastic sealing piece 3.3; the top of each T-shaped cylinder 3.1 is fitted with a U-shaped top cover 3.2 with an opening facing downward, and the inner wall of the U-shaped top cover 3.2 is threadedly connected to the outer wall of the T-shaped cylinder 3.1 for easy disassembly and assembly; a through hole is opened at the center of the top of the U-shaped top cover 3.2, and the inner diameter of the through hole is larger than the inner diameter of the first annular groove 11 and smaller than the outer diameter of the first annular groove 11. The inner wall surface of the top of the U-shaped top cover 3.2 and the top surface of the T-shaped cylinder 3.1 clamp the elastic sealing piece 3.3, and the elastic sealing piece 3.3 seals the gap between the inner wall surface of the top of the U-shaped top cover 3.2 and the top surface of the T-shaped cylinder 3.1;

[0036] The top surface of the T-shaped cylinder 3.1 inside the first annular groove 11 is in an arc shape that bulges upwards. When the T-shaped cylinder 3.1, the U-shaped top cover 3.2 and the elastic sealing piece 3.3 are assembled, the bulging portion of the top surface of the T-shaped cylinder 3.1 presses the middle part of the elastic sealing piece 3.3 upwards, so that the elastic sealing piece 3.3 is deformed by force, thereby forming a seal between the bottom surface of the elastic sealing piece 3.3 and the top surface of the T-shaped cylinder 3.1 in the initial state; the elastic sealing piece 3.3 is made of an anti-corrosion elastic rubber material, and can produce elastic deformation when squeezed by a pressure difference;

[0037] An air inlet pipe 4 is provided on the bottom surface of the lower shell 1.2, and the interior of the air inlet pipe 4 is connected with the closed cavity 2. Specifically, an air inlet port that runs through the upper and lower parts is opened at the center position of the lower shell 1.2. The top end of the air inlet pipe 4 is installed at the air inlet port on the bottom surface of the lower shell 1.2. The interior of the air inlet pipe 4 is connected with the air inlet port. The air inlet pipe 4 is welded or integrally formed with the lower shell 1.2. The bottom end of the air inlet pipe 4 of the aeration head can be installed on the air delivery pipe. The outer wall of the bottom end of the air inlet pipe 4 is provided with an external thread. The air inlet pipe 4 is threadedly connected with the air delivery pipe, which is convenient for disassembly and assembly of the aeration head.

[0038] As a preferred embodiment, in this embodiment, Figure 1 As shown, the bottom surface of the dome-shaped bottom plate 1.2.1 is provided with a plurality of ribs 5, which are evenly distributed in a circular ring shape with the central axis of the air intake pipe 4 as the center, and the inner ends of the plurality of ribs 5 are welded or integrally formed with the outer wall of the air intake pipe 4, which can improve the structural strength of the dome-shaped bottom plate 1.2.1.

[0039] As a preferred embodiment, in this embodiment, Figure 3As shown, the upper inner wall of each of the diverter holes 9 begins to have an internal thread, and the outer wall of the bottom end of each T-shaped cylinder 3.1 is provided with an external thread. The T-shaped cylinder 3.1 is installed at the diverter hole 9 on the top surface of the upper shell 1.1 by means of a threaded connection, which is convenient for disassembly and assembly of the air outlet nozzle 3, and for maintenance and replacement of the air outlet nozzle 3; specifically, the diverter hole 9 is a stepped hole, and the bottom end of the T-shaped cylinder 3.1 extends into the upper section of the diverter hole 9, which is convenient for positioning the screw-in depth of the T-shaped cylinder 3.1 when installing the T-shaped cylinder 3.1.

[0040] As a preferred embodiment, in this embodiment, the top surface of the elastic sealing piece 3.3 is glued and fixed to the top inner wall of the U-shaped top cover 3.2. When the U-shaped top cover 3.2 and the elastic sealing piece 3.3 are installed on the top of the T-shaped cylinder 3.1, as the convex portion of the top surface of the T-shaped cylinder 3.1 presses the middle part of the elastic sealing piece 3.3 upward, the outer edge of the elastic sealing piece 3.3 is glued and fixed to the top inner wall of the U-shaped top cover 3.2, so that the outer edge of the elastic sealing piece 3.3 does not shrink inward, ensuring that the outer edge of the elastic sealing piece 3.3 is clamped between the top surface of the T-shaped cylinder 3.1 and the top inner wall of the U-shaped top cover 3.2 to form a seal;

[0041] Or, if Figure 3 As shown, a plurality of limiting columns 12 are arranged on the top inner side wall of the U-shaped top cover 3.2, and the plurality of limiting columns 12 are evenly distributed in a circular ring shape with the central axis of the U-shaped top cover 3.2 as the center; a third annular groove 13 is opened on the top surface of the T-shaped cylinder 3.1, and the third annular groove 13 is coaxial with the T-shaped cylinder 3.1 and is located on the outside of the first annular groove 11; the bottom end of each limiting column 12 penetrates the elastic sealing piece 3.3 and extends into the third annular groove 13; when the U-shaped top cover 3.2 and the elastic sealing piece 3.3 are installed on the top of the T-shaped cylinder 3.1, the elastic sealing piece 3.3 is placed into the interior of the U-shaped top cover 3.2, and ensure that each limiting column 12 all penetrate the elastic sealing piece 3.3, and each limiting column 12 limits the elastic sealing piece 3.3. When the U-shaped top cover 3.2 is threadedly installed on the top of the T-shaped cylinder 3.1, the limiting column 12 extends into the third annular groove 13. Under the limiting effect of each limiting column 12, when the U-shaped top cover 3.2 is screwed in, when the top surface convex part of the T-shaped cylinder 3.1 presses the middle part of the elastic sealing piece 3.3 upward, the outer edge part of the elastic sealing piece 3.3 will not shrink inward, ensuring that the outer edge part of the elastic sealing piece 3.3 is clamped between the top surface of the T-shaped cylinder 3.1 and the top inner wall of the U-shaped top cover 3.2 to form a seal;

[0042] When the elastic sealing piece 3.3 is limited by the second method, the elastic sealing piece 3.3 is not glued and fixed to the top inner wall of the U-shaped top cover 3.2, so that the elastic sealing piece 3.3 can be easily replaced when the aeration head is inspected.

[0043] The working principle of the aeration head in this embodiment is:

[0044] When using the air aeration method to treat environmental engineering sewage, several aeration heads are installed on the air delivery pipes at the bottom of the aeration tank;

[0045] In the initial state, when the blower does not supply air, under the action of the water pressure in the aeration tank, the bottom surface of the elastic sealing piece 3.3 is tightly attached to the top surface of the T-shaped cylinder 3.1, and a seal is formed between the convex portion of the top surface of the T-shaped cylinder 3.1 and the middle portion of the elastic sealing piece 3.3. The flow channel between the first annular groove 11 and the airway hole 10 is closed, reducing the backflow of sewage from the first annular groove 11 into the airway hole 10, and preventing impurities in the water body from entering the inside of the air outlet nozzle 3 to cause blockage of the outlet flow channel;

[0046] During aeration, the blower outputs high-pressure air, and the air in the air delivery pipeline enters the closed cavity 2 through the air inlet pipe 4. The air in the closed cavity 2 is diverted from each diversion hole 9 to each airway hole 10 of the T-shaped cylinder 3.1. Under the pressure of the high-pressure air, the air in the airway hole 10 presses the middle part of the elastic sealing piece 3.3 upward, so that the gap between the bottom surface of the elastic sealing piece 3.3 and the top surface of the T-shaped cylinder 3.1 is widened, and the air in the airway hole 10 flows into the first annular groove 11, and finally diverted from the first annular groove 11 to each air outlet 14. The air provided by the blower enters the water body through each air outlet 14 for aeration.

[0047] After the blower stops supplying air, the air pressure in the airway hole 10 decreases, and the water pressure on the middle part of the elastic sealing piece 3.3 is greater than the air pressure. Under the action of the water pressure, the middle part of the elastic sealing piece 3.3 is tightly attached to the raised part on the top surface of the T-shaped cylinder 3.1, thereby blocking the passage between the first annular groove 11 and the airway hole 10, preventing a large amount of water from flowing back into the airway hole 10, and preventing impurities in the water body from entering the inside of the air outlet nozzle 3 to cause blockage of the outlet air passage;

[0048] During the use of the aeration head, impurities in the external water body are not easy to enter the internal flow channel of the air outlet nozzle 3, which can reduce the risk of blockage of the outlet flow channel, is conducive to ensuring the aeration effect, reducing the frequency of manual cleaning of the aeration head, and saving sewage treatment costs. The air outlet nozzle 3 installed on the shell 1.1 of the aeration head can be easily disassembled and replaced, which can be conducive to resource reuse and cost saving.

Claims

1. An anti-blocking aeration head for sewage treatment, comprising an aeration head body (1), characterized in that: The aeration head body (1) is composed of an upper shell (1.1) and a lower shell (1.2), and a closed cavity (2) is formed between the upper shell (1.1) and the lower shell (1.2); The upper shell (1.1) is provided with a plurality of flow diversion holes (9) communicating with the inside and the outside, and each flow diversion hole (9) on the top surface of the upper shell (1.1) is provided with an air outlet nozzle (3); Each air outlet nozzle (3) comprises a T-shaped cylinder (3.1), and an airway hole (10) penetrating vertically is provided at the center of the T-shaped cylinder (3.1); A first annular groove (11) is formed on the top surface of each T-shaped cylinder (3.1); a plurality of air outlet holes (14) penetrating downward through the T-shaped cylinder (3.1) are formed at the bottom of the first annular groove (11); The top surface of each T-shaped cylinder (3.1) is covered with an elastic sealing piece (3.3); the top of each T-shaped cylinder (3.1) is provided with a U-shaped top cover (3.2) with an opening facing downward, and the inner wall of the U-shaped top cover (3.2) is threadedly connected to the outer wall of the T-shaped cylinder (3.1); a through hole is provided at the center of the top of the U-shaped top cover (3.2) and penetrates inside and outside, the inner diameter of the through hole is larger than the inner diameter of the first annular groove (11) and smaller than the outer diameter of the first annular groove (11), the inner wall surface of the top of the U-shaped top cover (3.2) and the top surface of the T-shaped cylinder (3.1) clamp the elastic sealing piece (3.3), and the elastic sealing piece (3.3) seals the gap between the inner wall surface of the top of the U-shaped top cover (3.2) and the top surface of the T-shaped cylinder (3.1); An air intake pipe (4) is provided on the bottom surface of the lower shell (1.2), and the interior of the air intake pipe (4) is in communication with the sealed cavity (2).

2. The anti-clogging aeration head for sewage treatment according to claim 1, characterized in that: The upper shell (1.1) and the lower shell (1.2) are both dome-shaped.

3. The anti-blocking aeration head for sewage treatment according to claim 2, characterized in that: The upper shell (1.1) comprises a dome-shaped top plate (1.1.1), the outer edge of the dome-shaped top plate (1.1.1) is integrally formed with a first annular flange (1.1.2), and the inner edge bottom surface of the first annular flange (1.1.2) is integrally formed with an annular boss (1.1.3); The lower shell (1.2) comprises a dome-shaped bottom plate (1.2.1), the outer edge of the dome-shaped bottom plate (1.2.1) is integrally formed with a second annular flange (1.2.2), the inner edge top surface of the second annular flange (1.2.2) is integrally formed with an annular groove body (1.2.3), and the top surface of the annular groove body (1.2.3) is provided with a second annular groove (6) that is concave-convexly matched with the annular boss (1.1.3); The first annular flange (1.1.2) and the second annular flange (1.2.2) are detachably connected via a plurality of bolt and nut assemblies (8); the annular boss (1.1.3) and the second annular groove (6) on the annular groove body (1.2.3) are concave-convex matched; and a concave-convex annular sealing ring (7) is provided between the annular boss (1.1.3) and the annular groove body (1.2.3).

4. The anti-clogging aeration head for sewage treatment according to claim 1, characterized in that: The upper inner wall of each diversion hole (9) begins to have an internal thread, the lower outer wall of each T-shaped cylinder (3.1) is provided with an external thread, and the T-shaped cylinder (3.1) is installed at the diversion hole (9) on the top surface of the upper shell (1.1) by means of a threaded connection.

5. The anti-clogging aeration head for sewage treatment according to claim 1, characterized in that: The top surface of the T-shaped cylinder (3.1) inside the first annular groove (11) is in an upwardly convex arc shape.

6. The anti-clogging aeration head for sewage treatment according to claim 5, characterized in that: The top surface of the elastic sealing sheet (3.3) is glued and fixed to the top inner wall surface of the U-shaped top cover (3.2).

7. The anti-clogging aeration head for sewage treatment according to claim 5, characterized in that: A plurality of limiting columns (12) are arranged on the inner side wall of the top of the U-shaped top cover (3.2), and the plurality of limiting columns (12) are evenly distributed in a circular ring shape with the central axis of the U-shaped top cover (3.2) as the center; a third annular groove (13) is opened on the top surface of the T-shaped cylinder (3.1), and the third annular groove (13) is coaxial with the T-shaped cylinder (3.1) and is located outside the first annular groove (11); the bottom end of each limiting column (12) penetrates the elastic sealing plate (3.3) and extends into the third annular groove (13).

8. The anti-clogging aeration head for sewage treatment according to claim 1, characterized in that: The elastic sealing piece (3.3) is made of an anti-corrosion elastic rubber material.

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