A decomposed sewage purification device

Abstract

The present invention provides a decomposed sewage purification device, which relates to the technical field of microbial decomposition and purification of sewage. It includes a microbial hydrolysis tank, and the microbial hydrolysis tank includes a decomposition and purification tank. At the bottom inside of the decomposition and purification tank, a circulating aeration water pump is fixedly connected. The upper end of the output pipe of the circulating aeration water pump is fixedly connected to a gas-liquid mixing tank, and the circulating aeration water pump is internally communicated with the gas-liquid mixing tank. An aeration air pump is fixedly connected above the gas-liquid mixing tank. When cleaning and maintaining a single aeration branch pipe, after the aeration branch pipe is pulled out, the built-in sealing plug plate inside the gas-liquid mixing tank automatically seals the opening from the inside to the outside, blocking the delivery channel of this branch pipe and preventing leakage of the aeration pipeline. When replacing the aeration branch pipe in the powered-on state, it will not cause leakage of the aeration pipeline and affect the normal operation of the remaining aeration branch pipes, and it can be operated while powered on, reducing the impact of the maintenance work of the aeration mechanism on the aeration effect.

Description

Technical Field

[0001] The present invention relates to the technical field of microbial decomposition and purification of sewage, and particularly to a decomposable sewage purification device. Background Art

[0002] In the microbial decomposition and purification treatment of sewage, aeration plays an important role. By forcibly introducing air into the sewage, not only the dissolved oxygen content of the water body is increased, the degradation of organic matter by microorganisms is promoted, and the whole treatment process is accelerated, but also the mixing effect of the wastewater is enhanced, so that the organic matter and suspended solids are evenly distributed, providing more contact opportunities for microorganisms. Aeration also helps to prevent the precipitation of suspended solids and microorganisms and remove harmful gases, greatly improving the purification speed and quality of sewage. Among them, when a jet aerator is in use, it utilizes the high-speed water flow of the mud-water mixture pumped by a water pump to suck in a large amount of air, causing the mud, water, and air to be violently mixed and agitated in the throat pipe, smashing the bubbles into a mist shape. Then, in the diffuser pipe, the kinetic energy of the mixed liquid becomes pressure energy, and the fine bubbles are further compressed, enabling oxygen to be rapidly transferred into the mixed liquid.

[0003] In the traditional microbial decomposition and purification of sewage, an aeration mechanism is installed in the decomposition tank. The traditional jet aerator is connected to a water pump, and the air, mud, and water mixture is transported to the air pipe at the bottom of the tank through the water pump. The air, mud, and water mixture is sprayed through the air pipe. However, during the use of the air pipe, as the use time increases, the inner wall of the pipe body and the nozzle position will be blocked due to the deposition of mud and scale, reducing the fluidity. It is necessary to regularly disassemble and soak and clean it with a cleaning solvent. However, in the traditional aeration device, the connection of the pipeline is generally docked by means such as flange connection and tight socket connection. The disassembly and installation operations are cumbersome, resulting in low maintenance efficiency and troublesome cleaning of the aeration device. At the same time, when a branch air pipe is disassembled and maintained, the aeration mechanism needs to be completely shut down, and the branch air pipe cannot be disassembled separately while it is no longer running. Interrupting the aeration will affect the aeration effect of the sewage. Summary of the Invention

[0004] The embodiments of the present disclosure relate to a decomposable sewage purification device to solve the problems that during the use of the air pipe, as the use time increases, the inner wall of the pipe body and the nozzle position will be blocked due to the deposition of mud and scale, reducing the fluidity, and it is necessary to regularly disassemble and soak and clean it with a cleaning solvent. However, in the traditional aeration device, the connection of the pipeline is generally docked by means such as flange connection and tight socket connection. The disassembly and installation operations are cumbersome, resulting in low maintenance efficiency and troublesome cleaning of the aeration device. At the same time, when a branch air pipe is disassembled and maintained, the aeration mechanism needs to be completely shut down, and the branch air pipe cannot be disassembled separately while it is no longer running. Interrupting the aeration will affect the aeration effect of the sewage.

[0005] In the first aspect of the present disclosure, a decomposed sewage purification device is provided, which specifically includes: a microbial hydrolysis tank, the microbial hydrolysis tank includes a decomposition and purification tank, a circulating aeration water pump is fixedly connected to the inner bottom of the decomposition and purification tank, the upper end of the output pipe of the circulating aeration water pump is fixedly connected to a gas-liquid mixing tank, the circulating aeration water pump is internally communicated with the gas-liquid mixing tank, an aeration air pump is fixedly connected above the gas-liquid mixing tank, the output end of the aeration air pump is connected to the inside of the gas-liquid mixing tank through a pipeline, four built-in sealing plates are movably connected inside the gas-liquid mixing tank, four lifting lock columns are slidably connected to the outer surface of the gas-liquid mixing tank, and one aeration branch pipe is inserted into the front, rear, left, and right sides of the gas-liquid mixing tank respectively, and the four lifting lock columns are respectively located above the four aeration branch pipes.

[0006] Further, four inner connecting rods are fixedly connected to the inner wall of the decomposition and purification tank, and the inner ends of the four inner connecting rods are fixedly connected to the outer surface of the gas-liquid mixing tank.

[0007] Further, the gas-liquid mixing tank is a cuboid box body, and a circular groove-shaped aeration pipe socket is respectively penetrated through the middle of the front wall, rear wall, left wall, and right wall of the gas-liquid mixing tank. An insertion socket sleeve is fixedly connected to the inner walls of the front, rear, left, and right walls of the gas-liquid mixing tank respectively. The outer end of the insertion socket sleeve is fixedly connected to the inner edge of the aeration pipe socket, and the aeration pipe socket and the insertion socket sleeve are coaxial.

[0008] Further, an aeration pipe support frame is respectively welded on the front wall, rear wall, left wall, and right wall of the gas-liquid mixing tank. The aeration pipe support frame is a frame body with an arc-shaped cross-section, the opening of the aeration pipe support frame faces upward, and a support frame orientation slot is opened at the bottom of the inner surface of the aeration pipe support frame.

[0009] Further, a lock block guide seat is respectively screwed on the front wall, rear wall, left wall, and right wall of the gas-liquid mixing tank, and a lock block tension spring is fixedly connected to the upper end of the lock block guide seat.

[0010] Further, a plug barrel is fixedly connected to the middle of the side of the built-in sealing plate away from the center of the gas-liquid mixing tank, and two plug barrel through openings are opened at a position near the outer edge of the barrel wall of the plug barrel.

[0011] Further, the plug barrel is movably inserted into the insertion socket sleeve, a plug barrel return tension spring is sleeved outside the plug barrel, and the two ends of the plug barrel return tension spring are respectively fixedly connected to the inner wall of the gas-liquid mixing tank and the built-in sealing plate.

[0012] Further, the lifting lock column is in an "L" shape, the lifting lock column is movably inserted into the lock block guide seat, a lock column limit lock head is fixedly connected to the outer lower end of the lifting lock column, the lock column limit lock head is in a wedge shape, the inclined surface of the lock column limit lock head faces outward and downward, and the upper end of the lifting lock column is fixedly connected to the lock block tension spring.

[0013] Further, the aeration branch pipe is bent and processed into an upper, middle and lower three-section structure. Above the outer wall of the upper section of the aeration branch pipe, a branch pipe positioning rib is fixedly connected. The branch pipe positioning rib is in an arc structure, and the cross-section of the branch pipe positioning rib is in a right triangle structure. The inclined surface of the branch pipe positioning rib faces inward and upward. Below the outer surface of the upper section of the aeration branch pipe, a branch anti-rotation insert is fixedly connected. The upper section of the aeration branch pipe is tightly inserted into the aeration pipe socket and the socket sleeve. The aeration branch pipe is in contact with the aeration pipe support frame, and the branch anti-rotation insert is movably connected with the support frame orientation slot.

[0014] Further, the lower section of the aeration branch pipe is parallel to the inner bottom surface of the decomposition and purification tank. Three aeration nozzles are fixedly connected to the pipe wall of the lower section of the aeration branch pipe. The aeration nozzles are galvanized iron pipes. The outer end of the aeration nozzle is hinged with a nozzle cover plate. The nozzle cover plate covers the opening of the aeration nozzle. The lower edge of the nozzle cover plate is fixedly connected with a cover plate return magnet, and the cover plate return magnet is magnetically connected with the aeration nozzle.

[0015] The present invention provides a decomposition type sewage purification device, which has the following beneficial effects:

[0016] In the sewage microbial decomposition and purification device of the present invention, a jet aeration mechanism is built in. Through the high-speed operation of the circulating aeration water pump and the aeration air pump, sewage, sludge and air are mixed, so that mud, water and air are violently mixed and stirred in the throat pipe, and the bubbles are crushed into a mist shape. Then, in the diffusion pipe, the kinetic energy of the mixed liquid becomes pressure energy, and the fine bubbles are further compressed, so that oxygen is quickly transferred into the mixed liquid, and the mixed liquid is conveyed back into the sewage again through the aeration branch pipe, increasing the oxygen content in the sewage. When cleaning and maintaining a single aeration branch pipe, the lifting lock column can be pushed up, and the aeration branch pipe can be pulled out forcefully. After the aeration branch pipe is pulled out, the built-in sealing plug plate inside the gas-liquid mixing box automatically seals the opening from the inside to the outside, blocking the conveying channel of the branch pipe and preventing the leakage of the aeration pipeline. When replacing the aeration branch pipe in the power-on state, it will not cause the leakage of the aeration pipeline and affect the normal operation of the other aeration branch pipes, and the operation can be carried out while the machine is running, reducing the impact of the maintenance work of the aeration mechanism on the aeration effect.

[0017] In addition, the aeration branch pipe is provided with a structure of a branch pipe positioning rib and a branch anti-rotation insertion strip, which cooperates with the socket sleeve and the lifting locking column to form a quick docking structure. Under normal conditions, the aeration branch pipe is inserted into the socket sleeve. The branch pipe positioning rib cooperates with the locking column limit lock head to limit the aeration branch pipe. The branch anti-rotation insertion strip is inserted into the support frame directional slot to fix the circumferential direction of the aeration branch pipe. When disassembling the aeration branch pipe, pull the lifting locking column upward to separate the locking column limit lock head from the branch pipe positioning rib, and then pull the aeration branch pipe outwards to complete the disassembly. When installing, insert the aeration branch pipe into the aeration pipe socket in the same way. The disassembly and installation of the aeration branch pipe are fast, which can effectively improve the dredging and cleaning efficiency of the aeration branch pipe.

[0018] In addition, a nozzle cover plate is provided at the end of the aeration nozzle. When the aeration nozzle sprays a mixture of water and air, the nozzle cover plate is impacted outwards to open the opening of the aeration nozzle. When the aeration stops, the nozzle cover plate automatically flips under the action of its own gravity and the magnetic attraction of the cover plate reset magnet and covers the opening of the aeration nozzle to prevent sludge from precipitating and entering through the opening of the aeration nozzle after the aeration stops, causing blockage of the aeration nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below.

[0020] The drawings in the following description only relate to some embodiments of the present invention and do not limit the present invention.

[0021] In the drawings:

[0022] Figure 1 A schematic diagram showing the overall structure of the present application is shown;

[0023] Figure 2 A schematic diagram showing the structure of the aeration mechanism of the present application is shown;

[0024] Figure 3 A schematic diagram showing the longitudinally cut-open structure of the gas-liquid mixing tank of the present application is shown;

[0025] Figure 4 A front view structure diagram of the present application's Tu3 is shown;

[0026] Figure 5 A schematic diagram showing the horizontally cut-open structure of the gas-liquid mixing tank of the present application is shown;

[0027] Figure 6 A schematic diagram showing the structure of the built-in sealing plug plate of the present application is shown;

[0028] Figure 7 A schematic diagram showing the structure of the lock block guide seat of the present application is shown;

[0029] Figure 8 The structural schematic diagram of the aeration branch pipe of the present application is shown;

[0030] Figure 9 The structural schematic diagram of the aeration nozzle of the present application is shown;

[0031] Figure 10 The of the present application is shown Figure 5 The structural schematic diagram of the partial enlargement at position A in ;

[0032] Figure 11 The of the present application is shown Figure 5 The structural schematic diagram of the partial enlargement at position B in .

[0033] List of reference numerals

[0034] 1, decomposition and purification tank; 101, inner connecting rod; 2, circulating aeration water pump; 3, gas-liquid mixing tank; 301, aeration pipe socket; 302, socket sleeve; 303, aeration pipe support; 304, support orientation slot; 305, lock block guide seat; 306, lock block tension spring; 4, aeration air pump; 5, built-in sealing plug plate; 501, plug barrel; 502, barrel through port; 503, plug plate return tension spring; 6, lifting lock column; 601, lock column limit lock head; 7, aeration branch pipe; 701, branch pipe positioning rib; 702, branch anti-rotation insertion strip; 703, aeration nozzle; 704, nozzle cover plate; 705, cover plate return magnet. Specific embodiments

[0035] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0036] Embodiment 1: Please refer to Figures 1 to 11 :

[0037] The present invention provides a decomposed sewage purification device, including a microbial hydrolysis tank. The microbial hydrolysis tank includes a decomposition and purification tank 1. At the bottom inside the decomposition and purification tank 1, a circulating aeration water pump 2 is fixedly connected. The upper end of the output pipe of the circulating aeration water pump 2 is fixedly connected to a gas-liquid mixing tank 3. Four inner connecting rods 101 are fixedly connected to the inner wall of the decomposition and purification tank 1. The inner ends of the four inner connecting rods 101 are fixedly connected to the outer surface of the gas-liquid mixing tank 3, and the gas-liquid mixing tank 3 is supported and fixed by the inner connecting rods 101. The circulating aeration water pump 2 is internally connected to the gas-liquid mixing tank 3. Above the gas-liquid mixing tank 3, an aeration air pump 4 is fixedly connected. The output end of the aeration air pump 4 is connected to the inside of the gas-liquid mixing tank 3 through a pipeline. Four built-in sealing plates 5 are movably connected inside the gas-liquid mixing tank 3. Four lifting locking columns 6 are slidably connected to the outer surface of the gas-liquid mixing tank 3. One aeration branch pipe 7 is inserted into the front, rear, left, and right sides of the gas-liquid mixing tank 3 respectively. The four lifting locking columns 6 are respectively located above the four aeration branch pipes 7. The aeration branch pipe 7 is bent and processed into an upper, middle, and lower three-section structure. Above the outer wall of the upper section of the aeration branch pipe 7, a branch pipe positioning convex strip 701 is fixedly connected. The branch pipe positioning convex strip 701 is in an arc structure. The cross-section of the branch pipe positioning convex strip 701 is in a right triangle structure. The inclined surface of the branch pipe positioning convex strip 701 faces inward and upward. Below the outer surface of the upper section of the aeration branch pipe 7, a branch anti-rotation insertion strip 702 is fixedly connected. The upper section of the aeration branch pipe 7 is tightly inserted into the aeration pipe socket 301 and the socket sleeve 302. The aeration branch pipe 7 is in contact with the aeration pipe support frame 303. The branch anti-rotation insertion strip 702 is movably connected to the support frame orientation slot 304.

[0038] In the embodiment of the present disclosure, the gas-liquid mixing tank 3 is a cuboid box body. A circular groove structure aeration pipe socket 301 is respectively penetrated through the middle of the front wall, rear wall, left wall, and right wall of the gas-liquid mixing tank 3. One socket sleeve 302 is respectively fixedly connected to the front, rear, left, and right walls of the inner wall of the gas-liquid mixing tank 3. The outer end of the socket sleeve 302 is fixedly connected to the inner edge of the aeration pipe socket 301. The aeration pipe socket 301 and the socket sleeve 302 are coaxial. Under normal conditions, the aeration branch pipe 7 is inserted into the aeration pipe socket 301 and extends into the socket sleeve 302, so that the aeration branch pipe 7 is internally connected to the gas-liquid mixing tank 3.

[0039] In the embodiment of the present disclosure, one aeration pipe support frame 303 is respectively welded to the front wall, rear wall, left wall, and right wall of the gas-liquid mixing tank 3. The aeration pipe support frame 303 is a frame body with an arc-shaped cross-section. The opening of the aeration pipe support frame 303 faces upward. A support frame orientation slot 304 is opened at the bottom of the inner surface of the aeration pipe support frame 303; the bottom of the aeration branch pipe 7 is supported by the aeration pipe support frame 303, and the circumferential direction of the aeration branch pipe 7 is positioned by the insertion of the support frame orientation slot 304 and the branch anti-rotation insertion strip 702, so as to prevent the aeration branch pipe 7 from rotating.

[0040] In the embodiment of the present disclosure, a lock block guide seat 305 is screwed to each of the front wall, rear wall, left wall, and right wall of the gas-liquid mixing tank 3. A lock block tension spring 306 is fixedly connected to the upper end of the lock block guide seat 305. The lifting lock column 6 is in an "L" shape and is movably inserted into the lock block guide seat 305. A lock column limit lock head 601 is fixedly connected to the outer lower end of the lifting lock column 6. The lock column limit lock head 601 is in a wedge shape, and the inclined surface of the lock column limit lock head 601 faces outward and downward. The upper end of the lifting lock column 6 is fixedly connected to the lock block tension spring 306. Under normal conditions, the branch pipe positioning rib 701 cooperates with the lock column limit lock head 601 to limit the aeration branch pipe 7, so that the aeration branch pipe 7 is fixedly connected to the gas-liquid mixing tank 3. When the aeration branch pipe 7 is disassembled, the lifting lock column 6 is pulled upward to separate the lock column limit lock head 601 from the branch pipe positioning rib 701, and the aeration branch pipe 7 can be pulled out to complete the disassembly. When installing the aeration branch pipe 7, the aeration branch pipe 7 is inserted into the aeration pipe socket 301. Through the pushing of the branch pipe positioning rib 701 against the inclined surface of the lock column limit lock head 601, the lifting lock column 6 is pushed upward. When the aeration branch pipe 7 is completely inserted into the appropriate position, the branch pipe positioning rib 701 is located inside the lock column limit lock head 601, so that the lifting lock column 6 is pushed downward under the action of the lock block tension spring 306 to maintain the locking of the aeration branch pipe 7, improving the quick disassembly and assembly of the aeration branch pipe 7.

[0041] In the embodiment of the present disclosure, a plug barrel 501 is fixedly connected to the middle of the side of the built-in sealing plug plate 5 away from the center of the gas-liquid mixing tank 3. Two plug barrel through holes 502 are opened at positions near the outer edge of the barrel wall of the plug barrel 501. The plug barrel 501 is movably inserted into the socket sleeve 302. A plug plate return tension spring 503 is sleeved outside the plug barrel 501, and the two ends of the plug plate return tension spring 503 are respectively fixedly connected to the inner wall of the gas-liquid mixing tank 3 and the built-in sealing plug plate 5. Under normal conditions, when the aeration branch pipe 7 is normally installed, the inner end of the aeration branch pipe 7 fits against the outer end of the plug barrel 501, pushing the built-in sealing plug plate 5 outward, so that the plug barrel through holes 502 are located outside the socket sleeve 302, and the space inside the aeration branch pipe 7 is communicated with the space inside the gas-liquid mixing tank 3 through the plug barrel through holes 502, so that the air and water-liquid mixture inside the gas-liquid mixing tank 3 can enter the inside of the aeration branch pipe 7. When the aeration branch pipe 7 is pulled out, while the aeration branch pipe 7 is being pulled out, the built-in sealing plug plate 5 is pushed toward the aeration pipe socket 301 by the pulling force of the plug plate return tension spring 503, so that the plug barrel 501 is completely inserted into the socket sleeve 302, blocking the plug barrel through holes 502, and disconnecting the vacant aeration pipe socket 301 from the internal space of the built-in sealing plug plate 5, avoiding the leakage of the mixture inside the gas-liquid mixing tank 3 through the vacant aeration pipe socket 301.

[0042] Embodiment 2. On the basis of Embodiment 1, the lower section of the aeration branch pipe 7 is parallel to the inner bottom surface of the decomposition and purification tank 1. Three aeration nozzles 703 are fixedly connected to the lower section pipe wall of the aeration branch pipe 7. The aeration nozzles 703 are galvanized iron pipes. The outer end of the aeration nozzle 703 is hinged with a nozzle cover plate 704. The nozzle cover plate 704 covers the opening of the aeration nozzle 703. The lower edge of the nozzle cover plate 704 is fixedly connected with a cover plate return magnet 705. The cover plate return magnet 705 is magnetically connected to the aeration nozzle 703. When the aeration nozzle 703 sprays a mixture of water and air, the nozzle cover plate 704 is impacted outwards, so that the opening of the aeration nozzle 703 is opened. When the aeration stops, the nozzle cover plate 704 automatically flips under the action of its own gravity and the magnetic attraction of the cover plate return magnet 705 and covers the opening of the aeration nozzle 703, preventing sludge from settling after the aeration stops and entering through the opening of the aeration nozzle 703, causing blockage of the aeration nozzle 703 and reducing the failure rate of the aeration mechanism.

[0043] The working principle of this embodiment: First, inject sewage into the decomposition and purification tank 1, turn on the circulating aeration water pump 2 and the aeration air pump 4. The sewage is transported at high speed to the gas-liquid mixing tank 3 through the circulating aeration water pump 2. Air is transported into the gas-liquid mixing tank 3 through the aeration air pump 4. Air is mixed with sewage and sludge inside the gas-liquid mixing tank 3 and is transported into the aeration branch pipe 7 through the insertion cylinder opening 502. The mixture of sewage, air and sludge is transported back to the sewage through the aeration nozzle 703 to achieve aeration. When cleaning and dredging the aeration branch pipe 7, there is no need to interrupt the aeration. Pull the lifting lock column 6 upwards so that the lock column limit lock head 601 is separated from the branch pipe positioning rib 701, and pull the aeration branch pipe 7 outwards to complete the disassembly. At the same time, the lifting lock column 6 at this position moves outwards under the action of the existing pulling force, so that the plugging cylinder 501 is completely inserted into the socket sleeve 302, blocking the insertion cylinder opening 502, and disconnecting the air pipe socket 301 at the vacant position from the internal space of the built-in sealing plug 5, preventing the mixture inside the gas-liquid mixing tank 3 from leaking through the vacant air pipe socket 301. When the aeration branch pipe 7 is disassembled and then dredged and cleaned with tools and cleaning agents and reinstalled on the gas-liquid mixing tank 3, insert the aeration branch pipe 7 into the air pipe socket 301. Through the pushing of the branch pipe positioning rib 701 against the inclined surface of the lock column limit lock head 601, the lifting lock column 6 is pushed upwards. When the aeration branch pipe 7 is completely inserted to the appropriate position, the branch pipe positioning rib 701 is located at the inner end of the lock column limit lock head 601, so that the lifting lock column 6 is pushed downwards under the action of the lock block tension spring 306 to keep the aeration branch pipe 7 locked. At the same time, push the plugging cylinder 501 towards the center of the gas-liquid mixing tank 3, and once again connect the aeration branch pipe 7 with the gas-liquid mixing tank 3 through the insertion cylinder opening 502, so that the aeration mechanism can continue to be used.

[0044] In this article, the following points need to be noted:

[0045] The accompanying drawings of the embodiments of the present disclosure only relate to the structures involved in the embodiments of the present disclosure, and other structures may refer to the general design.

[0046] Without conflict, the embodiments of the present disclosure and the features in the embodiments may be combined with each other to obtain new embodiments.

[0047] The above is only the specific implementation manner of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present disclosure can easily think of changes or substitutions, which should all be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A decomposition type sewage purification device, comprising a microbial hydrolysis tank, characterized in that: The microbial hydrolysis tank comprises a decomposition and purification tank (1), wherein a circulating aeration water pump (2) is fixedly connected to the bottom of the decomposition and purification tank (1), and the upper end of the output pipe of the circulating aeration water pump (2) is fixedly connected to a gas-liquid mixing box (3), the circulating aeration water pump (2) is communicated with the inside of the gas-liquid mixing box (3), an aeration air pump (4) is fixedly connected above the gas-liquid mixing box (3), the output end of the aeration air pump (4) is connected to the inside of the gas-liquid mixing box (3) via a pipeline, and the gas-liquid mixing box (3) is movably connected with four internal sealing plugging plates (5), and the gas-liquid mixing box The outer surface of the gas-liquid mixing box (3) is slidably connected to four lifting lock columns (6); the front, rear, left and right sides of the gas-liquid mixing box (3) are respectively plugged with an aeration branch pipe (7); the four lifting lock columns (6) are respectively located above the four aeration branch pipes (7); the middle of the front wall, rear wall, left wall and right wall of the gas-liquid mixing box (3) is respectively penetrated by an aeration pipe socket (301) with a circular groove structure; the front, rear, left and right walls of the inner wall of the gas-liquid mixing box (3) are respectively fixedly connected to a socket sleeve (302); the front wall, rear wall, left wall and right wall of the gas-liquid mixing box (3) are respectively fixedly connected to a socket sleeve (302); An aeration pipe support frame (303) is welded to each of the aeration pipe support frames (303), which are frames with an arc-shaped cross section. The opening of the aeration pipe support frame (303) faces upward, and a support frame orientation slot (304) is provided at the bottom of the inner surface of the aeration pipe support frame (303); a locking block guide seat (305) is screwed to each of the front wall, rear wall, left wall, and right wall of the gas-liquid mixing box (3), and a locking block tension spring (306) is fixedly connected to the upper end of the locking block guide seat (305); a blocking plate insert (506) is fixedly connected to the middle of a side of the built-in sealing blocking plate (5) away from the center of the gas-liquid mixing box (3) 01), two plug-in openings (502) are provided on the wall of the plug-in plug (501) near the outer edge, and a plug-in reset tension spring (503) is connected to the outer surface of the plug-in plug (501); the lifting lock column (6) is in an "L"-shaped structure, the lifting lock column (6) is movably plugged into the lock block guide seat (305), and the outer lower end of the lifting lock column (6) is fixedly connected to a lock column limit lock head (601), the lock column limit lock head (601) is in a wedge-shaped structure, and the inclined surface of the lock column limit lock head (601) faces outward and downward, and the upper end of the lifting lock column (6) is fixedly connected to the lock block tension spring (306);The aeration branch pipe (7) is bent into a three-section structure of upper, middle and lower sections. A branch pipe positioning convex strip (701) is fixedly connected to the upper portion of the outer wall of the upper section of the aeration branch pipe (7). The branch pipe positioning convex strip (701) is in an arc-shaped structure. The cross-section of the branch pipe positioning convex strip (701) is in a right-angled triangle structure. The inclined surface of the branch pipe positioning convex strip (701) faces inward and upward. A branch anti-rotation insert strip (702) is fixedly connected to the lower portion of the outer surface of the upper section of the aeration branch pipe (7). The upper section of the aeration branch pipe (7) is tightly inserted into the aeration pipe socket (301) and the socket sleeve (302). The aeration branch pipe (7) fits the aeration pipe support frame (303). The branch anti-rotation insert strip (702) is movably connected to the support frame directional slot (304). The inner end of the aeration branch pipe (7) is connected to the blocking plate. The outer end of the insert tube (501) fits in place, pushing the built-in sealing plug (5) outward, so that the insert tube opening (502) is located outside the socket sleeve (302), so that the space inside the aeration branch pipe (7) is connected to the space inside the gas-liquid mixing box (3) through the insert tube opening (502), so that the air and water mixture inside the gas-liquid mixing box (3) can enter the inside of the aeration branch pipe (7), and when the aeration branch pipe (7) is withdrawn, the built-in sealing plug (5) is pushed toward the aeration pipe socket (301) by the pulling force of the plug reset spring (503), so that the plug tube (501) is completely inserted into the socket sleeve (302), the insert tube opening (502) is blocked, and the aeration pipe socket (301) is disconnected from the internal space of the built-in sealing plug (5). ; 2. A decomposition type sewage purification device according to claim 1, characterized in that: Four inner connecting rods (101) are fixedly connected to the inner wall of the decomposition and purification tank (1), and the inner ends of the four inner connecting rods (101) are fixedly connected to the outer surface of the gas-liquid mixing box (3).

3. A decomposition type sewage purification device according to claim 1, characterized in that: The gas-liquid mixing box (3) is a rectangular parallelepiped box body, the outer end of the socket sleeve (302) is fixedly connected to the inner edge of the aeration pipe socket (301), and the aeration pipe socket (301) and the socket sleeve (302) are coaxial.

4. A decomposition type sewage purification device according to claim 3, characterized in that: The blocking plate insert (501) is movably plugged into the socket sleeve (302), and the two ends of the blocking plate reset tension spring (503) are respectively fixedly connected to the inner wall of the gas-liquid mixing box (3) and the built-in sealing blocking plate (5).

5. A decomposition type sewage purification device according to claim 4, characterized in that: The lower section of the aeration branch pipe (7) is parallel to the inner bottom surface of the decomposition and purification tank (1); three aeration nozzles (703) are fixedly connected to the pipe wall of the lower section of the aeration branch pipe (7); the aeration nozzles (703) are galvanized iron pipes; the outer ends of the aeration nozzles (703) are hingedly connected with nozzle covering plates (704); the nozzle covering plates (704) cover the openings of the aeration nozzles (703); the lower edges of the nozzle covering plates (704) are fixedly connected with covering plate resetting magnetic blocks (705); the covering plate resetting magnetic blocks (705) are magnetically connected to the aeration nozzles (703).

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