Jet device for sewage treatment

Abstract

The invention relates to the technical field of sewage treatment, and discloses a jet device for sewage treatment, the jet device comprises a jet device body, a water inlet pipe, a water outlet and an air inlet pipe, a suction chamber is arranged at the left end in the jet device body, and the right end of the suction chamber is connected with a throat pipe; the water outlet is connected to the right end of the throat pipe in a flaring mode, a water outlet flange plate is fixedly arranged at the outer end of the water outlet, and the air inlet pipe is fixedly arranged at the upper end of the side of the jet device body. The water inlet pipe is installed at the left end of the jet device body, a necking-down nozzle is arranged at the right end of the water inlet pipe and stretches into the position, opposite to the throat pipe, inside the suction chamber, and a liquid inlet flange plate is fixedly arranged at the outer end of the water inlet pipe. According to the jet device, sewage and gas are efficiently mixed in the jet device, the mixed sewage can be sprayed out at high pressure through the throat pipe and the flared water outlet, and higher treatment efficiency and effluent quality are shown in the sewage treatment process.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically to a jet jet device for wastewater treatment. Background Technology

[0002] Wastewater treatment refers to the process of purifying wastewater to meet the water quality requirements for discharge into a water body or for reuse. Wastewater treatment is widely used in various fields such as medical care and catering, and is increasingly entering the daily lives of ordinary people. In the process of wastewater treatment, aeration jets are used. Aeration jets are generally connected to a water pump and then connected to an air pipe to spray water to generate fine bubbles. The air in the bubbles comes into full contact with the water, dissolving oxygen in the water, thereby achieving the aeration effect.

[0003] Existing wastewater treatment jet injectors struggle to propel water into the suction chamber at high speeds, resulting in poor gas-liquid mixing, inability to expel water at high pressure through the throat and outlet, high resistance in the water flow channel, and insufficient sealing performance, which easily leads to leakage and increases subsequent treatment costs. Therefore, a corresponding technical solution needs to be designed to address these issues. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a jet injector for wastewater treatment, which solves the technical problems.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution: a jet ejector for sewage treatment, comprising a jet ejector body, an inlet pipe, an outlet pipe and an air inlet pipe, wherein the left end of the jet ejector body is provided with a suction chamber and the right end of the suction chamber is connected to a throat pipe; The water outlet is flared and connected to the right end of the throat pipe. A water outlet flange is fixedly provided at the outer end of the water outlet. The air inlet pipe is fixedly provided at the upper side of the jet body. The water inlet pipe is installed at the left end of the jet injector body, and the right end of the water inlet pipe is provided with a constricted nozzle. The nozzle extends into the interior of the suction chamber and faces the throat. The outer end of the water inlet pipe is fixed with a liquid inlet flange.

[0006] Preferably, fixing ears are fixedly distributed near the upper end of the outer side wall of the jet ejector body; mounting plates are fixedly distributed on the outer side wall of the inlet pipe, and rubber sealing gaskets are bonded to the inner end of the mounting plates, with positioning bolts penetrating through the interior of the mounting plates; the fixing ears provide stable support points for the entire jet ejector body device, facilitating fixed installation in the sewage treatment system. The mounting plates not only increase the flexibility of installation, but also effectively improve the sealing performance of the connection through the use of rubber sealing gaskets, preventing sewage leakage and ensuring the stable operation of the equipment. The penetrating connection of the positioning bolts further enhances the stability of the connection, making the installation process simpler and faster.

[0007] Preferably, a preliminary filtration device is installed at the left end of the inlet pipe. The preliminary filtration device includes an activated carbon filter element, a first filter flange, and a second filter flange. The first filter flange is fixedly installed at the outer end of the preliminary filtration device, and the second filter flange is fixedly installed at the inner end of the preliminary filtration device and connected to the inlet flange. The activated carbon filter element is snapped into the interior of the preliminary filtration device. The activated carbon filter element can effectively remove suspended solids, organic matter, and some harmful substances from wastewater, improving the efficiency and effect of subsequent treatment, and is easy to replace and maintain.

[0008] Preferably, protrusions are fixedly distributed around the left side of the activated carbon filter element, and a pull strap is fixedly distributed around the right side of the activated carbon filter element. A filter screen pocket is fixedly provided at the right end of the pull strap, and the filter screen pocket extends inside the left end of the water inlet pipe. The protrusions are used for quick hand-held removal and installation of the activated carbon filter element, allowing users to easily pull out the activated carbon filter element for cleaning or replacement. The pull strap is used to extend backward to fix the filter screen pocket, which further prevents larger particles from entering the ejector and protects the equipment from damage.

[0009] Preferably, the activated carbon filter element has a groove around its side, and spring seats are fixedly distributed at the outer end of the groove. A positioning head is fixedly provided at the outer end of the spring seats. A positioning groove is provided in the middle of the inner wall of the preliminary filtration device. Auxiliary telescopic rods are fixedly provided on both sides of the positioning head and at the groove. The positioning groove is used to precisely engage and install the positioning head, and the groove is used to embed and fix multiple spring seats. The spring seats are used to elastically support the positioning head, making elastic installation more convenient, ensuring the stable installation of the activated carbon filter element, extending the service life of the activated carbon filter element, and also improving the filtration efficiency.

[0010] Preferably, the outer end of the air intake pipe is provided with an air intake mounting head, and the inner end of the air intake mounting head is fixedly provided with an extension plate, and a sealing ring is sleeved on the upper part of the extension plate; the air intake mounting head is used to install the air intake pipe by means of threads, the extension plate is used to limit the installation of the air intake pipe, and the sealing ring is used to enhance the sealing performance of the air intake, prevent gas leakage, and ensure that the jet injector can make full use of the air pressure and improve the mixing effect when it is working.

[0011] Preferably, the inner end of the intake pipe is provided with a baffle, and the two ends of the baffle are extended inward and fixedly connected to end plates. The outer end of the end plates is fixedly provided with a spring frame. The inner sides of the intake pipe are provided with an inner groove and a metal groove, and the spring frame is fixedly provided in the inner groove. The outer ends of the baffle are fixedly provided with sealing plates, and the outer ends of the sealing plates are fixedly provided with magnetic plates. The magnetic plates are attracted and fixedly provided inside the metal groove. The spring frame is used to elastically support the end plates and the baffle, so that the baffle is always kept in a closed state. The magnetic plates are used to attract into the metal groove. The sealing plates are used to maintain the sealing of the closed state. When the air pressure changes, the baffle can move flexibly under the action of the spring frame, which not only prevents gas backflow, but also ensures the smoothness and efficiency of the intake process.

[0012] Preferably, a defoaming device is installed on the lower side of the jet ejector body. The defoaming device includes an impeller assembly, an inlet defoaming tank, a drain hole, a fixing plate, and a drive motor. The fixing plate is installed on the lower side of the jet ejector body, and the drive motor is fixedly mounted on the outer end of the fixing plate. A drive shaft is connected through the output end of the drive motor. The impeller assembly is connected to the inner end of the drive shaft. The inlet defoaming tank is located at the inner end of the impeller assembly, and the drain hole is distributed on the side of the impeller assembly. The drive motor is used to drive and control the rotation of the drive shaft, which in turn drives the impeller assembly to rotate. The inlet defoaming tank and the drain hole are used to draw in the generated water flow and remove the foam generated in the wastewater before discharging it, thereby improving the quality of the effluent, ensuring that the foam can be effectively collected and discharged, and avoiding interference from the foam in subsequent treatment processes.

[0013] Preferably, a pad is fixedly distributed on the inner wall of the right end of the throat, and a limiting plate is movably connected to the right end of the pad. A spring rod is fixedly distributed between the outer wall of the limiting plate and the inner wall of the throat. The limiting plate is movably connected to the right end of the pad, and the spring rod is used to elastically support the limiting plate, thus forming a dynamic adjustment system that can automatically adjust the flow area inside the throat according to changes in water pressure and flow rate, thereby optimizing the mixing effect and energy conversion efficiency of the jet injector, improving the adaptability of the equipment, reducing energy consumption, and extending the service life of the equipment.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the designed suction chamber allows sewage and gas to be efficiently mixed inside the ejector, and the constricted nozzle allows water to be injected into the suction chamber at high speed, which effectively enhances the negative pressure effect and promotes full contact and mixing of sewage and gas, thereby improving the efficiency of sewage treatment. At the same time, the connected throat and the flared outlet allow the mixed sewage to be ejected under high pressure, which optimizes the water flow channel and reduces fluid resistance. The fixed setting of the outlet flange and the inlet flange ensures the stability and sealing of the connection between the outlet and the inlet pipe, avoids leakage problems, and improves the overall operational reliability of the equipment. The overall structure of the jet ejector body demonstrates higher treatment efficiency and effluent quality in the wastewater treatment process, effectively reducing subsequent treatment costs, improving the stability and reliability of the overall treatment system, reducing wastewater leakage and energy consumption, which is in line with the current green and sustainable development concept and is of great significance for promoting the development of the environmental protection industry. The modular design makes it easy to disassemble and replace each component, reducing maintenance costs, and also provides convenience for equipment upgrades and renovations. It is not only suitable for urban wastewater treatment, but can also be applied to multiple fields such as industrial wastewater treatment and agricultural irrigation water purification, demonstrating broad application prospects and market potential. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the preliminary filtration device at the outer end of the water inlet pipe of the present invention; Figure 3 For the present invention Figure 2 Enlarged structural diagram at point C; Figure 4 For the present invention Figure 1 Enlarged structural diagram at point A in the middle; Figure 5 This is a schematic diagram of the intake pipe structure of the present invention; Figure 6 For the present invention Figure 5 Enlarged structural diagram at point D; Figure 7 For the present invention Figure 5 Enlarged structural diagram at point E; Figure 8 For the present invention Figure 7 Enlarged structural diagram at point F; Figure 9 This is a schematic diagram of the defoaming device of the present invention; Figure 10 For the present invention Figure 1 Enlarged structural diagram at point B.

[0016] In the diagram, 1. Ejector body; 11. Fixing ear; 12. Suction chamber; 13. Throat; 131. Pad; 132. Limiting plate; 133. Spring rod; 2. Water inlet pipe; 21. Nozzle; 22. Liquid inlet flange; 23. Mounting plate; 231. Positioning bolt; 232. Rubber sealing gasket; 4. Water outlet; 41. Water outlet flange; 5. Air inlet pipe; 51. Baffle; 511. End plate; 512. Spring frame; 52. Air inlet mounting head; 521. Sealing ring; 522. Extension plate; 53. Inner groove; 54. Magnetic suction plate; 541. Sealing plate; 55. Metal trough; 6. Preliminary filtration device; 61. Activated carbon filter element; 610. Groove; 611. Protrusion; 612. Pull belt; 613. Filter screen bag; 62. Filter flange one; 63. Filter flange two; 64. Positioning groove; 65. Positioning head; 651. Spring seat; 652. Auxiliary telescopic rod; 7. Defoaming device; 71. Impeller assembly; 72. Water inlet defoaming tank; 73. Drain hole; 74. Fixing plate; 75. Drive motor; 76. Drive shaft. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figures 1-10 The present invention provides a technical solution: a jet ejector for sewage treatment, including a jet ejector body 1, an inlet pipe 2, an outlet 4 and an air inlet pipe 5. The left end of the jet ejector body 1 is provided with a suction chamber 12, and the right end of the suction chamber 12 is connected to a throat pipe 13. The water outlet 4 is flared and connected to the right end of the throat pipe 13. The outer end of the water outlet 4 is fixed with a water outlet flange 41, and the air inlet pipe 5 is fixed to the upper side of the jet body 1. The water inlet pipe 2 is installed at the left end of the jet injector body 1, and the right end of the water inlet pipe 2 is provided with a constricted nozzle 21. The nozzle 21 extends into the interior of the suction chamber 12 and faces the throat 13. The outer end of the water inlet pipe 2 is fixedly provided with a liquid inlet flange 22.

[0019] Further improved, a fixing lug 11 is fixedly distributed near the upper end of the outer side wall of the jet body 1; Mounting plates 23 are fixedly distributed on the outer wall of the water inlet pipe 2. A rubber sealing gasket 232 is bonded to the inner end of the mounting plate 23. A positioning bolt 231 is connected through the inside of the mounting plate 23. The fixing lug 11 provides a stable support point for the entire jet body 1, which facilitates fixed installation in the sewage treatment system. The mounting plate 23 not only increases the flexibility of installation, but also effectively improves the sealing performance of the connection through the use of rubber sealing gasket 232, preventing sewage leakage and ensuring the stable operation of the equipment. The through connection of the positioning bolt 231 further enhances the stability of the connection, making the installation process simpler and faster.

[0020] Further improvements include a preliminary filtration device 6 installed at the left end of the inlet pipe 2. The preliminary filtration device 6 includes an activated carbon filter element 61, a first filter flange 62, and a second filter flange 63. The first filter flange 62 is fixedly installed at the outer end of the preliminary filtration device 6, and the second filter flange 63 is fixedly installed at the inner end of the preliminary filtration device 6 and is connected to the inlet flange 22. The activated carbon filter element 61 is snapped into the interior of the preliminary filtration device 6. The activated carbon filter cartridge 61 can effectively remove suspended solids, organic matter and some harmful substances from sewage, improving the efficiency and effect of subsequent treatment, and is easy to replace and maintain.

[0021] Further improvements include protrusions 611 fixedly distributed around the left side of the activated carbon filter element 61, and a pull strap 612 fixedly distributed around the right side of the activated carbon filter element 61. A filter screen pocket 613 is fixedly provided at the right end of the pull strap 612, and the filter screen pocket 613 extends to the left end of the inside of the water inlet pipe 2. The protrusion 611 is used for quick hand-held removal and installation of the activated carbon filter element 61, allowing users to easily pull out the activated carbon filter element 61 for cleaning or replacement. The pull strap 612 is used to extend and fix the filter bag 613 backward. The filter bag 613 is used to further prevent larger particles from entering the ejector and protect the equipment from damage.

[0022] Further improvements include a groove 610 around the side of the activated carbon filter element 61, a spring seat 651 fixedly distributed at the outer end of the groove 610, a positioning head 65 fixedly provided at the outer end of the spring seat 651, and a positioning groove 64 provided in the middle of the inner wall of the preliminary filtration device 6. Auxiliary telescopic rods 652 are fixedly provided on both sides of the positioning head 65 and at the groove 610; The positioning groove 64 is used for precise snap-fit ​​installation of the positioning head 65, and the groove 610 is used for embedding and fixing multiple spring seats 651. The spring seats 651 are used to elastically support the positioning head 65, making elastic installation more convenient, ensuring the stable installation of the activated carbon filter element 61, extending the service life of the activated carbon filter element 61, and also improving the filtration efficiency.

[0023] Further improvements include an intake mounting head 52 at the outer end of the intake pipe 5, an extension disc 522 fixedly provided around the inner end of the intake mounting head 52, and a sealing ring 521 fitted over the extension disc 522. The air intake mounting head 52 is used to install the air intake pipe by means of threads, the extension plate 522 is used to limit the installation of the air intake pipe, and the sealing ring 521 is used to enhance the sealing performance of the air intake, prevent gas leakage, and ensure that the ejector can make full use of the air pressure and improve the mixing effect when it is working.

[0024] In a further improvement, the inner end of the intake pipe 5 is provided with a baffle 51, and the two ends of the baffle 51 are fixedly connected to end plates 511 extending inward, and the outer end of the end plates 511 is fixedly provided with a spring bracket 512. The inner ends of the air intake pipe 5 are provided with an inner groove 53 and a metal groove 55, and the spring bracket 512 is fixedly installed in the inner groove 53. A sealing plate 541 is fixedly provided at both ends of the outer side of the baffle 51, and a magnetic suction plate 54 is fixedly provided at the outer end of the sealing plate 541. The magnetic suction plate 54 is attracted and fixed inside the metal groove 55. The spring frame 512 is used to elastically support the end plate 511 and the baffle 51, so that the baffle 51 is always kept closed. The magnetic plate 54 is used to be attracted to the inside of the metal groove 55. The sealing plate 541 is used to maintain the sealing of the closed state. When the air pressure changes, the baffle 51 can move flexibly under the action of the spring frame 512, which not only prevents gas backflow, but also ensures the smoothness and efficiency of the air intake process.

[0025] Further improvements include a defoaming device 7 installed on the lower side of the ejector body 1. The defoaming device 7 includes an impeller assembly 71, a water inlet defoaming tank 72, a drain hole 73, a fixing plate 74, and a drive motor 75. The fixing plate 74 is installed on the lower side of the ejector body 1, and the drive motor 75 is fixedly installed on the outer end of the fixing plate 74. The output end of the drive motor 75 is connected to a drive shaft 76. The impeller assembly 71 is connected to the inner end of the drive shaft 76. The water inlet defoaming tank 72 is located at the inner end of the impeller assembly 71, and the drain hole 73 is distributed on the side of the impeller assembly 71. The drive motor 75 is used to drive the drive shaft 76 to rotate. The drive shaft 76 is used to drive the impeller assembly 71 to rotate. The inlet defoaming tank 72 and the drain hole 73 are used to draw in the generated water flow and remove the foam generated in the sewage before discharging it. The filter element is installed inside the inlet defoaming tank 72 to filter and remove the foam, which improves the quality of the effluent and ensures that the foam can be effectively collected and discharged, avoiding the interference of foam with the subsequent treatment process.

[0026] Specifically, a pad 131 is fixedly distributed on the inner wall of the right end of the larynx 13, and a limiting plate 132 is movably connected to the right end of the pad 131. A spring rod 133 is fixedly distributed between the outer wall of the limiting plate 132 and the inner wall of the larynx 13. The limiting plate 132 is used to movably connect to the right end of the pad 131, and the spring rod 133 is used to elastically support the limiting plate 132, forming a dynamic adjustment system that can automatically adjust the flow area inside the throat 13 according to the changes in water pressure and flow rate, thereby optimizing the mixing effect and energy conversion efficiency of the jet injector, improving the adaptability of the equipment, reducing energy consumption, and extending the service life of the equipment.

[0027] Working principle: First, the preliminary filtration device 6 is installed to the liquid inlet flange 22 of the water inlet pipe 2 via the filter flange 2 63. Then, the mounting plate 23 and rubber sealing gasket 232 of the water inlet pipe 2 are installed to the left end of the jet body 1 via the positioning bolts 231. The air duct is sealed and installed at the air inlet mounting head 52 of the air inlet pipe 5, and the jet body 1 is installed as a whole onto the sewage treatment equipment through the fixing ear 11. Finally, the filter flange 62 and the outlet flange 41 of the primary filter device 6 are installed onto the sewage pipe. Wastewater enters the preliminary filtration device 6 and is initially filtered and purified by the activated carbon filter element 61. It is then further filtered by the filter net 613, which uses a precision filter element to filter out even finer impurities. After purification, the wastewater enters the inlet pipe 2. The wastewater passes through the nozzle 21 to form a negative pressure and enters the suction chamber 12. It then enters the air intake pipe 5 and the baffle 51 opens elastically, forming a gas-liquid mixture inside the suction chamber 12. The generated foam is effectively removed by the defoaming device 7. Finally, after entering the throat 13, the pressure of the multiple limiting plates 132 is increased by the elastic action of the spring rod 133, and the water is ejected at high pressure from the outlet 4. This optimizes the water flow channel, reduces fluid resistance, increases pressure, compresses air bubbles, and increases the solubility of air in water. Then it enters the flotation tank.

[0028] The present invention comprises the following components: jet ejector body 1, fixing ear 11, suction chamber 12, throat 13, pad 131, limiting plate 132, spring rod 133, water inlet pipe 2, nozzle 21, liquid inlet flange 22, mounting plate 23, positioning bolt 231, rubber sealing gasket 232, water outlet 4, water outlet flange 41, air inlet pipe 5, baffle 51, end plate 511, spring frame 512, air inlet mounting head 52, sealing ring 521, extension plate 522, inner groove 53, magnetic suction plate 54, sealing plate 541, and metal groove 5. 5. Preliminary filtration device; 6. Activated carbon filter element; 61. Groove; 610. Protrusion; 611. Pull belt; 612. Filter screen bag; 613. Filter flange one; 62. Filter flange two; 63. Positioning groove; 64. Positioning head; 65. Spring seat; 651. Auxiliary telescopic rod; 652. Defoaming device; 7. Impeller assembly; 71. Inlet defoaming tank; 72. Drain hole; 73. Fixing plate; 74. Drive motor; 75. Drive shaft; 76. All components are general standard parts or parts known to those skilled in the art, and their structure and principle are based on this technology. All of these issues can be understood through technical manuals or conventional experimental methods. The problem solved by this invention is the difficulty in injecting water at high speed into the suction chamber, resulting in poor gas-liquid mixing, inability to be ejected at high pressure through the throat and outlet, high resistance in the water flow channel, insufficient sealing performance, easy leakage, and increased subsequent treatment costs. This invention, through the combination of the above components, uses a designed suction chamber 12 to enable efficient mixing of sewage and gas inside the ejector. Furthermore, the constricted nozzle 21 allows water to be injected at high speed into the suction chamber, effectively enhancing the negative pressure effect and promoting full contact and mixing of sewage and gas, thereby improving sewage treatment efficiency. At the same time, the connected throat 13 and the flared outlet 4 enable the mixed sewage to be ejected at high pressure, optimizing the water flow channel and reducing fluid resistance. The fixed setting of the outlet flange 41 and the inlet flange 22 ensures the stability and sealing of the connection between the outlet and inlet pipes, avoids leakage problems, and improves the overall operational reliability of the equipment.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A jet ejector for wastewater treatment, comprising an ejector body (1), an inlet pipe (2), an outlet (4), and an air inlet pipe (5), characterized in that: The ejector body (1) has an inhalation chamber (12) at the left end of its interior, and a throat tube (13) is connected to the right end of the inhalation chamber (12). The outlet (4) is flared and connected to the right end of the throat (13). The outer end of the outlet (4) is fixed with an outlet flange (41). The air inlet pipe (5) is fixed on the upper side of the jet body (1). The water inlet pipe (2) is installed at the left end of the jet body (1), and the right end of the water inlet pipe (2) is provided with a constricted nozzle (21). The nozzle (21) extends into the inside of the suction chamber (12) and faces the throat (13). The outer end of the water inlet pipe (2) is fixedly provided with a liquid inlet flange (22).

2. The jet injector for wastewater treatment according to claim 1, characterized in that: The ejector body (1) has fixed lugs (11) fixedly distributed near the upper end of the outer side wall. The outer wall of the water inlet pipe (2) is fixedly provided with mounting plates (23), the inner end of the mounting plate (23) is bonded with a rubber sealing gasket (232), and the interior of the mounting plate (23) is connected with positioning bolts (231).

3. The jet injector for wastewater treatment according to claim 1, characterized in that: A preliminary filtration device (6) is installed at the left end of the water inlet pipe (2). The preliminary filtration device (6) includes an activated carbon filter element (61), a first filter flange (62), and a second filter flange (63). The first filter flange (62) is fixedly installed at the outer end of the preliminary filtration device (6), and the second filter flange (63) is fixedly installed at the inner end of the preliminary filtration device (6) and is connected to the liquid inlet flange (22). The activated carbon filter element (61) is snapped into the interior of the preliminary filtration device (6).

4. A wastewater treatment jet ejector according to claim 3, characterized in that: The activated carbon filter element (61) has protrusions (611) fixedly distributed around its left side and pull straps (612) fixedly distributed around its right side. A filter bag (613) is fixedly provided at the right end of the pull strap (612), and the filter bag (613) extends to the left end of the inlet pipe (2).

5. A jet injector for wastewater treatment according to claim 4, characterized in that: The activated carbon filter element (61) has a groove (610) around its side. A spring seat (651) is fixedly distributed at the outer end of the groove (610). A positioning head (65) is fixedly provided at the outer end of the spring seat (651). A positioning groove (64) is provided in the middle of the inner sidewall of the preliminary filtration device (6). Auxiliary telescopic rods (652) are fixedly provided on both sides of the positioning head (65) and at the groove (610).

6. A jet injector for wastewater treatment according to claim 1, characterized in that: The outer end of the air intake pipe (5) is provided with an air intake mounting head (52), and an extension plate (522) is fixedly provided around the inner end of the air intake mounting head (52). A sealing ring (521) is fitted on the upper part of the extension plate (522).

7. A jet injector for wastewater treatment according to claim 6, characterized in that: The inner end of the air intake pipe (5) is provided with a baffle (51), and the two ends of the baffle (51) are fixedly connected to end plates (511) extending inward. The outer end of the end plate (511) is fixedly provided with a spring frame (512). The air intake pipe (5) has an inner groove (53) and a metal groove (55) at both ends on its inner side, and the spring bracket (512) is fixedly installed in the inner groove (53). The outer ends of the baffle (51) are fixedly provided with sealing plates (541), and the outer ends of the sealing plates (541) are fixedly provided with magnetic plates (54). The magnetic plates (54) are adsorbed and fixed inside the metal groove (55).

8. A jet injector for wastewater treatment according to claim 1, characterized in that: A defoaming device (7) is installed on the lower side of the jet body (1). The defoaming device (7) includes an impeller assembly (71), an inlet defoaming tank (72), a drain hole (73), a fixing plate (74), and a drive motor (75). The fixing plate (74) is installed on the lower side of the jet body (1). The drive motor (75) is fixed on the outer end of the fixing plate (74). The output end of the drive motor (75) is connected through a drive shaft (76). The impeller assembly (71) is connected to the inner end of the drive shaft (76). The inlet defoaming tank (72) is located at the inner end of the impeller assembly (71). The drain hole (73) is distributed on the side of the impeller assembly (71).

9. A jet injector for wastewater treatment according to claim 1, characterized in that: A pad (131) is fixedly distributed on the inner wall of the right end of the trachea (13). A limiting plate (132) is movably connected to the right end of the pad (131). A spring rod (133) is fixedly distributed between the outer wall of the limiting plate (132) and the inner wall of the trachea (13).

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