A cleaning liquid recovery device for a phosphorus removal apparatus

Abstract

The utility model belongs to the technical field of cleaning fluid recovery, especially relates to a cleaning fluid recovery device for phosphorus removal equipment, include: filter jar, the detachable installation of filter jar top has the top cover, the inside middle part rotation of top cover is installed with filter bowl. Through filter bowl realizes high -efficient solid -liquid separation through centrifugal motion, promotes cleaning fluid recovery purity and filtration efficiency, adapts the continuous operation demand of phosphorus removal equipment, electric push rod drive pressing plate lift, cooperate feeding pressurization subassembly, can even add cleaning fluid or recovery material, can also pass through pressurization and strengthen filtration effect, realize the full mixing of material and cleaning simultaneously, open and close mechanism passes through state switching, guarantees that material only overflows from filter bowl side wall when closing, ensures that filtration is thorough, when opening, the granular material is discharged fast, avoids filter bowl blockage, support ejection assembly and pressing plate linkage, realize the automation switching of open and close mechanism, need not additional drive component, simplify structure and improve operation convenience simultaneously.

Description

Technical Field

[0001] This utility model belongs to the field of cleaning fluid recovery technology, and in particular relates to a cleaning fluid recovery device for phosphorus removal equipment. Background Technology

[0002] Currently, phosphorus removal equipment is the core tool for controlling phosphorus pollution in water bodies and is widely used in the treatment of municipal sewage, industrial wastewater and surface water. However, existing phosphorus removal equipment cleaning solution recovery devices have many technical shortcomings in practical applications, making it difficult to meet the requirements of efficient recovery and continuous operation.

[0003] Among these issues, the feeding and pressurizing mechanisms are poorly designed, leading to uneven material addition and localized accumulation. Furthermore, the lack of effective pressurization methods not only affects the filtration effect but also makes it difficult to achieve thorough mixing and cleaning of the materials. The particle discharge mechanism at the bottom of the filter cartridge is often manually controlled or has a complex drive design. When closed, it has poor sealing performance, which can easily lead to liquid leakage and incomplete filtration. When opened, it is cumbersome to operate, and the untimely discharge of particles can easily cause filter cartridge blockage.

[0004] There is an urgent need for improvement, so we propose a cleaning solution recovery device for phosphorus removal equipment. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned technical problems by providing a cleaning solution recovery device for phosphorus removal equipment, which facilitates the discharge of filtered particulate matter.

[0006] In view of this, the present invention provides a cleaning solution recovery device for phosphorus removal equipment, comprising: A filter tank, wherein a top cover is detachably installed on the top of the filter tank, and a filter cartridge is rotatably installed in the middle of the inner side of the top cover, and the filter cartridge undergoes centrifugal motion inside the filter tank via a drive mechanism; An electric push rod is fixedly installed on the top of the top cover. The drive end of the electric push rod passes through the top cover and is fixedly connected to a pressure plate on the top of the filter cartridge. A feeding and pressurizing assembly is installed on the pressure plate. The feeding and pressurizing assembly is used to add materials and air pressure to the filter cartridge. An opening and closing mechanism is provided at the bottom of the inner cavity of the filter cartridge. When the opening and closing mechanism is closed, the material inside the inner cavity of the filter cartridge continuously overflows from the side wall of the filter cartridge. When the opening and closing mechanism is open, the particulate matter inside the filter cartridge is discharged. A support ejection assembly is provided at the bottom of the pressure plate, and the support ejection assembly is used to switch the opening and closing mechanism between the closed and open states.

[0007] Furthermore, the drive mechanism includes a motor fixedly installed on one side of the top of the top cover. The motor drive output end is connected to a transmission shaft. The transmission shaft passes through the top cover and is fixedly connected to a gear. The gear meshes with a gear ring, which is fixedly installed on the top of the outer wall of the filter cartridge.

[0008] Furthermore, the feeding and pressurizing assembly includes a discharge nozzle fixedly installed on one side of the bottom of the pressure plate, the discharge nozzle being connected to a guide pipe, the guide pipe being connected to a cleaning pipe via a T-joint in the middle, and a pressurizing nozzle fixedly installed at the other end of the bottom of the pressure plate, the other end of the pressurizing nozzle being connected to the outlet port of an external air pump.

[0009] Furthermore, electric valves are installed on the feed pipe, cleaning pipe, and air pipe.

[0010] Furthermore, the opening and closing mechanism includes mounting seats symmetrically installed at the bottom of the inner cavity of the filter cartridge. Both sides of the inner wall of the mounting seat are provided with built-in grooves. A rotating shaft is rotatably installed in the built-in groove. A sealing plate is fixedly connected between two corresponding rotating shafts. A torsion spring is sleeved on the outside of the rotating shaft. The two ends of the torsion spring are fixedly connected to the sealing plate and the mounting seat, respectively.

[0011] Furthermore, a sealing gasket is provided between the sealing plate and the mounting base, as well as between two adjacent mounting bases, and the sealing gasket is fixedly connected to the corresponding side wall of the sealing plate.

[0012] Furthermore, the support ejection assembly includes a support rod fixedly installed at the center of the bottom of the pressure plate, a stop plate fixedly connected to the bottom of the support rod, the stop plate corresponding to the bottom of the two sealing plates, and top rods fixedly connected to both sides of the bottom of the pressure plate, the top rods corresponding to the sealing plates.

[0013] Furthermore, a rotating groove is provided in the middle of the two sealing plates, the rotating groove is rotatably connected to the support rod, and a baffle is fixedly installed on the top of each mounting base, the baffle abutting against the top of the sealing plate.

[0014] Furthermore, the bottom of the filter tank is provided with a drain port, and the bottom of the filter cylinder is connected to a slag discharge pipe, with the other end of the slag discharge pipe extending out from the drain port.

[0015] Furthermore, an inner filter screen is fixedly installed inside the filter cartridge. The inner diameter of the top of the inner cavity of the inner filter screen is smaller than the inner diameter of the bottom of the inner cavity of the inner filter screen. The pressure plate is distributed at the top of the inner cavity of the inner filter screen.

[0016] The beneficial effects of this utility model are: The filter cartridge achieves efficient solid-liquid separation through centrifugal motion, improving the purity of the cleaning solution and filtration efficiency, and meeting the continuous operation requirements of phosphorus removal equipment. An electric push rod drives the pressure plate to rise and fall, working in conjunction with the feeding and pressurizing components to evenly add cleaning solution or recovered materials, enhance filtration through pressurization, and simultaneously achieve thorough mixing and cleaning of materials. The opening and closing mechanism switches states: when closed, it ensures that material only overflows from the side wall of the filter cartridge, guaranteeing thorough filtration; when open, it quickly discharges particulate matter, preventing filter cartridge clogging. The support ejection component is linked to the pressure plate, enabling automated switching of the opening and closing mechanism without the need for additional drive components, simplifying the structure and improving operational convenience. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a cleaning solution recovery device for phosphorus removal equipment proposed in this utility model; Figure 2 This is a schematic diagram of the feeding and pressurizing assembly and the supporting ejection assembly of a cleaning liquid recovery device for phosphorus removal equipment proposed in this utility model; Figure 3 This is a schematic diagram of the filter cartridge structure of a cleaning solution recovery device for phosphorus removal equipment proposed in this utility model; Figure 4 This is a schematic diagram of the opening and closing mechanism of a cleaning solution recovery device for phosphorus removal equipment proposed in this utility model. The markings in the diagram are as follows: 1. Filter tank; 11. Filter cartridge; 12. Gear ring; 13. Top cover; 14. Motor; 15. Gear; 2. Electric push rod; 21. Pressure plate; 22. Discharge nozzle; 23. Feed guide pipe; 24. Cleaning pipe; 25. Pressurizing nozzle; 26. Air pipe; 3. Mounting base; 31. Rotating shaft; 32. Sealing plate; 33. Torsion spring; 34. Rotary groove; 35. Sealing gasket; 36. Support rod; 37. Backing plate; 38. Top rod; 4. Slag discharge pipe; 41. Inner filter screen; 42. Baffle. Detailed Implementation

[0018] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0019] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0020] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0021] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0022] It should be noted that, in this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0023] Reference Figures 1 to 4 A cleaning solution recovery device for phosphorus removal equipment, comprising: The filter tank 1 has a top cover 13 that is detachably installed on the top of the filter tank 1 by bolts. A filter cartridge 11 is rotatably installed in the middle of the inner side of the top cover 13. The filter cartridge 11 undergoes centrifugal motion inside the filter tank 1 through a drive mechanism. An electric push rod 2 is fixedly installed on the top of the top cover 13. The drive end of the electric push rod 2 passes through the top cover 13 and is fixedly connected to the top of the filter cartridge 11 with a pressure plate 21. A feeding and pressurizing assembly is installed on the pressure plate 21. The feeding and pressurizing assembly is used to add materials and air pressure to the filter cartridge 11. The opening and closing mechanism is located at the bottom of the inner cavity of the filter cartridge 11. When the opening and closing mechanism is closed, the material inside the inner cavity of the filter cartridge 11 continuously overflows from the side wall of the filter cartridge 11. When the opening and closing mechanism is open, the particulate matter inside the filter cartridge 11 is discharged. The support ejection component is located at the bottom of the pressure plate 21 and is used to switch the opening and closing mechanism between the closed and open states.

[0024] In operation, the filter cartridge 11, inner filter screen 41, and other components are first assembled into the filter tank 1, and sealed by the detachable top cover 13. After the equipment is started, the drive mechanism drives the filter cartridge 11 to perform centrifugal motion in the filter tank 1, providing power for solid-liquid separation. When materials need to be added, the pressure plate 21 is adjusted to a suitable height, and the feeding and pressurizing component injects cleaning liquid or materials to be recovered into the filter cartridge 11. At the same time, the pressure inside the filter cartridge 11 can be increased through the pressurizing function. When the opening and closing mechanism is in the closed state, under the combined action of centrifugal force and pressure, the liquid components in the cleaning liquid seep out from the side wall of the filter cartridge 11 and enter the filter tank 1, while solid particles remain in the filter cartridge 11. When particles need to be discharged, the support ejection component switches the opening and closing mechanism to the open state with the action of the pressure plate 21, forming a discharge channel.

[0025] In the example of this application, the drive mechanism includes a motor 14 fixedly installed on one side of the top of the top cover 13. The drive output end of the motor 14 is connected to the drive shaft. The drive shaft passes through the top cover 13 and is fixedly connected to a gear 15. The gear 15 is meshed with a gear ring 12, which is fixedly installed on the top of the outer wall of the filter cartridge 11.

[0026] As a preferred example of this utility model, when the drive mechanism is started, the motor 14 outputs power and transmits it to the gear 15 through the transmission shaft. Since the gear 15 meshes with the toothed ring 12 on the top of the outer wall of the filter cartridge 11, the rotational motion of the gear 15 is converted into the circular motion of the toothed ring 12, which in turn drives the filter cartridge 11 to rotate synchronously.

[0027] In the example of this application, the feeding and pressurizing assembly includes a discharge nozzle 22 fixedly installed on one side of the bottom of the pressure plate 21. The discharge nozzle 22 is connected to a guide pipe 23. A cleaning pipe 24 is connected to the middle of the guide pipe 23 through a T-connector. A pressurizing nozzle 25 is fixedly installed at the other end of the bottom of the pressure plate 21. The other end of the pressurizing nozzle 25 is connected to the outlet port of an external air pump.

[0028] As a preferred example of this utility model, the external material supply device delivers cleaning liquid or material to be recycled through the feed pipe 23. The material is evenly sprayed onto the inner filter screen 41 inside the filter cartridge 11 through the discharge nozzle 22 at the bottom of the pressure plate 21, ensuring full contact between the material and the filter screen and avoiding local accumulation. When there are a lot of particles attached to the filter cartridge 11 and the inner filter screen 41, the feed pipe 23 is closed, and the cleaning pipe 24 is opened through the three-way connector. Clean water or special cleaning agent is sprayed directionally onto the surface of the filter screen through the discharge nozzle 22 to achieve targeted cleaning. The external air pump is started, and compressed air is injected into the filter cartridge 11 through the pressurization nozzle 25, forming a high-pressure environment inside the filter cartridge 11. Combined with the centrifugal motion of the filter cartridge 11, the liquid is pushed through the filter screen quickly. At the same time, the airflow can strip the fine particles attached to the surface of the filter screen, preventing the filter screen from clogging and improving the filtration and cleaning efficiency.

[0029] In the example of this application, electric valves are installed on the feed pipe 23, cleaning pipe 24 and air pipe 26.

[0030] As a preferred example of this utility model, during feeding, only the electric valve of the feed pipe 23 is opened, while the valves of the cleaning pipe 24 and the air pipe 26 are closed, ensuring that the material is transported separately and avoiding mixing with the cleaning medium and compressed air; during cleaning, only the electric valve of the cleaning pipe 24 is opened, while the other valves are closed, ensuring that the cleaning medium acts directionally on the filter screen; during pressurization, only the electric valve of the air pipe 26 is opened, while the other valves are closed, allowing compressed air to be concentrated and injected into the filter cartridge 11; during slag discharge, all pipeline valves are closed to prevent particulate matter from entering the pipeline and causing blockage; through the precise switching of electric valves, the independent operation of each function is achieved, reducing manual intervention and avoiding material contamination caused by operational errors.

[0031] It should be noted that the guide pipe 23 and air pipe 26 distributed on the top side inside the filter cartridge 11 have a certain length reserved in the filter tank 1. They are bent in the filter tank 1, and this part of the guide pipe 23 and air pipe 26 is flexible. When the pressure plate 21 moves down, the bottom end of the guide pipe 23 and air pipe 26 will move down with the pressure plate 21.

[0032] In the example of this application, the opening and closing mechanism includes mounting seats 3 symmetrically installed at the bottom of the inner cavity of the filter cartridge 11. Both sides of the inner wall of the mounting seat 3 are provided with built-in grooves. A rotating shaft 31 is rotatably installed in the built-in groove through a bearing. A sealing plate 32 is fixedly connected between two corresponding rotating shafts 31. A torsion spring 33 is sleeved on the outside of the rotating shaft 31. Both ends of the torsion spring 33 are fixedly connected to the sealing plate 32 and the mounting seat 3, respectively.

[0033] As a preferred example of this utility model, during filtration, the torsion spring 33 is in a naturally contracted state, and its tension drives the sealing plate 32 to rotate around the rotating shaft 31 in the built-in groove of the mounting base 3, so that the sealing plate 32 fits against the inner wall of the mounting base 3, forming a sealed structure at the bottom of the filter cartridge 11. At this time, the material in the filter cartridge 11 can only overflow from the side wall under the action of centrifugal force, realizing solid-liquid separation. During slag discharge, when the support ejector component applies a downward external force to the sealing plate 32, the sealing plate 32 overcomes the tension of the torsion spring 33 and rotates in the opposite direction around the rotating shaft 31, the bottom passage of the filter cartridge 11 is opened, and the remaining solid particles are discharged from the bottom under the action of gravity. After the slag discharge is completed, the support ejector component removes the external force, the torsion spring 33 returns to the contracted state, and drives the sealing plate 32 to automatically reset to the sealing position that fits against the mounting base 3. No additional power is needed to drive the sealing plate 32 to close, ensuring that the equipment quickly enters the next filtration cycle.

[0034] In the example of this application, a sealing gasket 35 is provided between the sealing plate 32 and the mounting base 3 and between two adjacent mounting bases 3, and the sealing gasket 35 is fixedly connected to the corresponding side wall of the sealing plate 32.

[0035] As a preferred example of this utility model, when the opening and closing mechanism is in the closed state, the sealing plate 32 is pressed against the inner wall of the mounting base 3 under the tension of the torsion spring 33, so that the sealing gasket 35 fixed on the side wall of the sealing plate 32 fits tightly against the inner wall of the mounting base 3, filling the gap between the sealing plate 32 and the mounting base 3, preventing liquid or fine particles in the filter cartridge 11 from leaking out of the gap, ensuring that all liquids are filtered through the filter screen on the side wall of the filter cartridge 11 before being discharged, thereby improving the purity of the recovered liquid.

[0036] It should be noted that the sealing gasket 35 has a certain degree of elastic deformation and can be made of nitrile rubber.

[0037] In the example of this application, the support ejection assembly includes a support rod 36 fixedly installed at the bottom center of the pressure plate 21, a stop plate 37 fixedly connected to the bottom of the support rod 36, the stop plate 37 corresponding to the bottom of the two sealing plates 32, and push rods 38 fixedly connected to both sides of the bottom of the pressure plate 21, the push rods 38 corresponding to the sealing plates 32.

[0038] As a preferred example of this utility model, during filtration and pressure maintenance, the electric push rod 2 drives the pressure plate 21 to rise, and the support rod 36 at the bottom of the pressure plate 21 rises synchronously, driving the abutment plate 37 to press the sealing plate 32 at the bottom of the filter cylinder 11, providing additional downward pressure to the sealing plate 32. Combined with the tension of the torsion spring 33, this ensures that the sealing plate 32 remains stably closed when the filter cylinder 11 is centrifugally rotating and internally pressurized, preventing the sealing plate 32 from accidentally opening due to pressure fluctuations. During slag discharge, the electric push rod 2 drives the pressure plate 21 to fall, and the top rods 38 on both sides of the bottom of the pressure plate 21 move down accordingly. The ends of the top rods 38 contact the sealing plate 32 and apply a downward thrust, pushing the sealing plate 32 to rotate around the rotating shaft 31 and open, thus realizing the discharge of particulate matter. The entire opening and closing switching process is completed by the lifting and lowering action of the pressure plate 21 driven by the electric push rod 2.

[0039] In the example of this application, a rotating groove 34 is provided in the middle of the two sealing plates 32. The rotating groove 34 is rotatably connected to the support rod 36. A baffle 42 is fixedly installed on the top of the mounting base 3, and the baffle 42 abuts against the top of the sealing plate 32.

[0040] As a preferred example of this utility model, when the filter cartridge 11 rotates at high speed under the drive mechanism, the sealing plate 32 rotates synchronously with the filter cartridge 11. Since the rotating groove 34 in the middle of the sealing plate 32 is rotatably connected to the support rod 36, and the support rod 36 is fixed on the pressure plate 21 and remains stationary, the rotating groove 34 can rotate freely around the support rod 36, avoiding relative friction interference between the support rod 36 and the sealing plate 32, ensuring that the rotation process of the filter cartridge 11 is stable and does not affect the centrifugal filtration effect.

[0041] In the example of this application, the bottom of the filter tank 1 is provided with a drain port, and the bottom of the filter cylinder 11 is connected to a slag discharge pipe 4, with the other end of the slag discharge pipe 4 extending out from the drain port.

[0042] As a preferred example of this utility model, during the filtration process, the clean recovery liquid separated by the filter screen on the side wall of the filter cartridge 11 flows into the interlayer space between the filter tank 1 and the filter cartridge 11, and finally collects at the bottom of the filter tank 1. It is then discharged separately through the drain port at the bottom of the filter tank 1 and enters the recovery pipeline. During the slag discharge process, the solid particles in the filter cartridge 11 enter the slag discharge pipe 4 from the bottom of the filter cartridge 11 after the opening and closing mechanism is opened. Since the other end of the slag discharge pipe 4 passes through the drain port at the bottom of the filter tank 1 and extends outward, the particles can be directly discharged outside the equipment through the slag discharge pipe 4 without passing through the interlayer space of the filter tank 1. The separate design of the drain port and the slag discharge pipe 4 makes the recovery liquid and the particles completely independent in the discharge path, avoiding secondary mixing between the two. At the same time, the slag discharge pipe 4 extends directly out of the equipment, which is convenient for the external receiving and collection device to centrally process the particles and reduce the residue of particles inside the equipment.

[0043] In the example of this application, an inner filter screen 41 is fixedly installed inside the filter cartridge 11. The inner diameter of the top of the inner cavity of the inner filter screen 41 is smaller than the inner diameter of the bottom of the inner cavity of the inner filter screen 41. The pressure plate 21 is distributed at the top of the inner cavity of the inner filter screen 41. The inner wall of the inner filter screen 41 has elastic deformation and can be a stainless steel porous mesh.

[0044] As a preferred example of this utility model, the inner filter screen 41 inside the filter cartridge 11 adopts a tapered structure that is narrow at the top and wide at the bottom. The pressure plate 21 is installed at the top of the inner cavity of the inner filter screen 41. When the equipment cleans particulate matter, the pressure plate 21 applies downward pressure, which can fully push out the particulate matter from the inner wall of the inner filter screen 41.

[0045] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A cleaning solution recovery device for phosphorus removal equipment, characterized in that... ,include: A filter tank (1) is provided with a detachable top cover (13) on the top of the filter tank (1). A filter cartridge (11) is rotatably installed in the middle of the inner side of the top cover (13). The filter cartridge (11) is driven by a drive mechanism and performs centrifugal motion inside the filter tank (1). An electric push rod (2) is fixedly installed on the top of the top cover (13). The driving end of the electric push rod (2) passes through the top cover (13) and is fixedly connected to the top of the filter cartridge (11) with a pressure plate (21). A feeding and pressurizing assembly is installed on the pressure plate (21). The feeding and pressurizing assembly is used to add materials and air pressure to the filter cartridge (11). An opening and closing mechanism is provided at the bottom of the inner cavity of the filter cartridge (11); A support ejection assembly is provided at the bottom of the pressure plate (21). The support ejection assembly is used to switch the closed state and open state of the opening and closing mechanism.

2. The cleaning solution recovery device for phosphorus removal equipment according to claim 1, characterized in that, The driving mechanism includes a motor (14) fixedly installed on one side of the top of the top cover (13). The output end of the motor (14) is connected to the transmission shaft. The transmission shaft passes through the top cover (13) and is fixedly connected to a gear (15). The gear (15) meshes with a gear ring (12). The gear ring (12) is fixedly installed on the top of the outer wall of the filter cartridge (11).

3. The cleaning solution recovery device for phosphorus removal equipment according to claim 1, characterized in that, The feeding and pressurizing assembly includes a discharge nozzle (22) fixedly installed on one side of the bottom of the pressure plate (21), the discharge nozzle (22) is connected to a guide pipe (23), the guide pipe (23) is connected to a cleaning pipe (24) through a three-way connector in the middle, and a pressurizing nozzle (25) is fixedly installed at the other end of the bottom of the pressure plate (21), the other end of the pressurizing nozzle (25) is connected to the outlet port of an external air pump.

4. The cleaning solution recovery device for phosphorus removal equipment according to claim 3, characterized in that, Electric valves are installed on the feed pipe (23), cleaning pipe (24) and air pipe (26).

5. A cleaning solution recovery device for a phosphorus removal equipment according to claim 4, characterized in that, The opening and closing mechanism includes mounting bases (3) symmetrically installed at the bottom of the inner cavity of the filter cartridge (11). The mounting bases (3) have built-in grooves on both sides of their inner walls. A rotating shaft (31) is rotatably installed in the built-in groove. A sealing plate (32) is fixedly connected between two corresponding rotating shafts (31). A torsion spring (33) is sleeved on the outside of the rotating shaft (31). The two ends of the torsion spring (33) are fixedly connected to the sealing plate (32) and the mounting base (3) respectively.

6. The cleaning solution recovery device for a phosphorus removal equipment according to claim 5, characterized in that, A sealing gasket (35) is provided between the sealing plate (32) and the mounting base (3) and between two adjacent mounting bases (3), and the sealing gasket (35) is fixedly connected to the side wall of the corresponding sealing plate (32).

7. A cleaning solution recovery device for a phosphorus removal equipment according to claim 6, characterized in that, The support ejection assembly includes a support rod (36) fixedly installed at the bottom center of the pressure plate (21), a stop plate (37) fixedly connected to the bottom of the support rod (36), the stop plate (37) corresponding to the bottom of the two sealing plates (32), and a top rod (38) fixedly connected to both sides of the bottom of the pressure plate (21), the top rod (38) corresponding to the sealing plate (32).

8. A cleaning solution recovery device for a phosphorus removal equipment according to claim 7, characterized in that, A rotating groove (34) is provided in the middle of the two sealing plates (32). The rotating groove (34) is rotatably connected to the support rod (36). A baffle (42) is fixedly installed on the top of the mounting base (3). The baffle (42) abuts against the top of the sealing plate (32).

9. A cleaning solution recovery device for a phosphorus removal equipment according to claim 8, characterized in that, The filter tank (1) is provided with a drain port at the bottom, and the filter cylinder (11) is connected to a slag discharge pipe (4) at the bottom, with the other end of the slag discharge pipe (4) extending out from the drain port.

10. A cleaning solution recovery device for a phosphorus removal equipment according to claim 9, characterized in that, An inner filter screen (41) is fixedly installed inside the filter cylinder (11). The inner diameter of the top of the inner cavity of the inner filter screen (41) is smaller than the inner diameter of the bottom of the inner cavity of the inner filter screen (41). The pressure plate (21) is distributed at the top of the inner cavity of the inner filter screen (41).

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