Modular filtration device for integrated wastewater treatment plant

Abstract

The utility model discloses a modularization filter equipment of integrated sewage treatment equipment belongs to sewage treatment equipment technical field, and this equipment includes shell, filter screen and motor, and mechanical backwash mechanism includes fixed sleeve, transmission rod, transmission column and broken bar, the fixed sleeve inner wall is equipped with inclined annular groove, the transmission rod is by motor drive, the transmission column sliding sleeve is located in transmission rod outside, and the guiding ball on it is slidably connected with inclined annular groove, makes and realizes the compound motion of rotation and up and down reciprocation in the filter medium between filter screen of broken bar connected with transmission column. The utility model discloses a compound motion to the filter medium of hardening carries out forced physical breaking and stirring, solves the problem of traditional hydraulic backwash not thoroughly, and can realize efficient combined backwash with the circulating pipeline of cooperation equipment self -carrying, has the advantages such as good backwash effect, high degree of automation, long service life of filter material.

Description

Technical Field

[0001] This utility model relates to the field of sewage treatment equipment technology, and in particular to modular filtration equipment for integrated sewage treatment equipment. Background Technology

[0002] Integrated wastewater treatment equipment plays a crucial role in modern water treatment engineering. Its filtration unit usually has multiple layers of filter media with different particle sizes, such as quartz sand and anthracite, which remove suspended solids and impurities from the water through physical interception. As the filtration process continues, a large amount of intercepted material will adhere to the surface of the filter media and gradually penetrate into the depth of the media layer, causing the media particles to stick together and form a caking phenomenon.

[0003] When the filter media clumps together, the effective flow channels for water decrease drastically, the head loss increases, and the treatment efficiency drops significantly. To restore filtration performance, the filter equipment must be backwashed regularly. The traditional backwashing method mainly uses a water pump to inject clean water from the bottom of the equipment in reverse. The upward flow of water causes the filter media layer to expand and loosen, thereby washing off and discharging the attached dirt. However, this method, which relies solely on water impact, is often not ideal for loosening and peeling off severely clumps or sticky dirt.

[0004] The impact force of water flow is attenuated when passing through thick media layers. Especially for deep, highly compacted areas, the water flow is unable to generate enough shear force to effectively break them up. This results in incomplete backwashing, with some compacted areas still existing. Frequent replacement of filter media is required, increasing operation and maintenance costs and workload.

[0005] Therefore, this utility model proposes a modular filtration device for integrated sewage treatment equipment to address the shortcomings of existing technologies. Utility Model Content

[0006] In view of the problems in the existing technology of modular filtration equipment in integrated sewage treatment equipment, which is difficult to effectively break and loosen the caking filter media by relying solely on hydraulic backwashing, resulting in incomplete backwashing and poor filtration performance recovery, this utility model aims to provide a modular filtration equipment for integrated sewage treatment equipment with improved structure, which can achieve deep cleaning through mechanical assistance and has better backwashing effect.

[0007] This utility model provides a modular filtration device for an integrated sewage treatment system, including a housing, multiple filter screens disposed inside the housing, and a motor fixedly connected to the top of the housing. It also includes a fixed sleeve, a transmission rod, a transmission column, a fixed rod, and multiple crushing rods.

[0008] The fixed sleeve is fixedly connected to the top wall of the outer shell, and its inner wall has an inclined annular groove. One end of the transmission rod is fixedly connected to the output end of the motor and passes downward through the top wall of the outer shell. The transmission column is rotatably connected to the inside of the fixed sleeve and is slidably sleeved on the outside of the transmission rod to rotate synchronously with it.

[0009] Furthermore, a guide ball is fixedly connected to the outer wall of the transmission column, and the guide ball is slidably accommodated in the inclined annular groove. The fixed rod is fixedly connected to the bottom wall of the transmission column, and multiple crushing rods are fixedly connected to the surface of the fixed rod and extend into the space between adjacent filter screens. The transmission rod is driven to rotate by a motor, which drives the transmission column to achieve a combined rotation and reciprocating motion under the guidance of the inclined annular groove, thereby driving the crushing rods to fully agitate and crush the filter media between the filter screens.

[0010] Preferably, the pore size of the plurality of filter screens decreases sequentially from top to bottom, and the pore size of the topmost filter screen is the same as that of the second tallest filter screen immediately below it. This gradient configuration is beneficial for achieving layered filtration, and the design that the pore size of the top two filter screens is the same can effectively prevent the loss of the lighter filter material in the upper layer during backwashing.

[0011] Preferably, the space between two adjacent filter screens is filled with anthracite, quartz sand and garnet from top to bottom. This combination of filter media with different densities and particle sizes constitutes a highly efficient composite filter bed that can adapt to the removal requirements of different impurities and automatically recovers its layered structure by gravity after backwashing.

[0012] Preferably, the crushing rod includes a rod body and a plurality of crushing teeth extending radially from the rod body. This structure with crushing teeth can more effectively cut into and tear apart the hardened filter media clumps, enhancing the effect of physical crushing.

[0013] Preferably, the outer circumferential surface of the transmission rod is provided with a keyway or a non-circular cross section for cooperating with the transmission column to transmit torque. This structural design ensures that the torque output by the motor can be transmitted to the transmission column without slippage, thus guaranteeing the reliability and efficiency of the transmission system.

[0014] Preferably, the device further includes an inlet pipeline system, which includes a first pipe fixedly disposed on the top of the outer casing surface and a first valve disposed on the first pipe for precisely controlling the introduction of wastewater to be treated.

[0015] Preferably, the device further includes a water outlet and diversion pipeline system, which includes a second pipe located at the bottom of the outer shell, a three-way valve connected to one end of the second pipe, and a storage tank connected to the three-way valve via a third pipe. This system can not only export filtered clean water, but also flexibly divert some of the clean water to the storage tank to reserve water for the subsequent backwashing process.

[0016] Preferably, the device further includes a backwash circulation pipeline system, which includes a water pump, a fourth pipe connecting the bottom of the storage tank to the water pump input end, and a sixth pipe connecting the water pump output end to the bottom of the outer casing. The system can utilize the stored clean water, pressurized by the water pump, and injected from the bottom of the device to achieve efficient hydraulic backwashing.

[0017] Preferably, the device further includes a sewage pipeline system, which includes a fifth pipe connected to the upper part of the outer shell, a second valve installed on the fifth pipe, and a collection box connected to the end of the fifth pipe, for timely and effective collection and discharge of wastewater carrying dirt during backwashing.

[0018] This utility model has the following beneficial effects: 1. This utility model, by setting up a transmission rod driven by a motor, a transmission column cooperating with the transmission rod, a fixed sleeve with an inclined annular groove, and a crushing rod connected to the transmission column, transforms a single rotational motion into a compound motion of rotation and up-and-down reciprocating motion. During the backwashing process, the filter medium is forcibly physically agitated and crushed, and in conjunction with the backwash water flow, deep cleaning is achieved, the backwashing effect is improved, the filtration performance is restored, and the service life of the medium is extended.

[0019] 2. This utility model solves the problem of complex structure and unreliable transmission in mechanisms that realize combined rotational and reciprocating motion by adopting a sliding fit structure of inclined annular groove and guide ball. It achieves the technical effect of simple and compact structure, stable and reliable transmission, and stable conversion of power into agitation and crushing action of filter material.

[0020] 3. This utility model solves the problems of traditional equipment where the pipelines of each functional unit are scattered, making it impossible to automatically store and recycle filtered water for the backwashing process, resulting in water waste and cumbersome operation. By setting up interconnected inlet water pipelines, outlet water and diversion pipelines, backwashing circulation pipelines and sewage discharge pipelines, it achieves a high degree of equipment integration, which can automatically complete a series of processes such as water intake, filtration, clean water storage, circulation backwashing, and sewage discharge, thus saving water resources and improving the automation level and operating efficiency of the equipment. Attached Figure Description

[0021] Figure 1This is a three-dimensional schematic diagram of the modular filtration device of the integrated sewage treatment equipment proposed in this utility model. Figure 2 This is a schematic diagram of the structure of the crushing rod of the modular filter device in the integrated sewage treatment equipment proposed in this utility model. Figure 3 This is a schematic diagram of the transmission rod of the modular filtration device in the integrated sewage treatment equipment proposed in this utility model. Figure 4 This is a schematic diagram of the sixth pipe of the modular filtration device in the integrated sewage treatment equipment proposed in this utility model.

[0022] Legend: 1. Outer casing; 2. Motor; 3. Fixing sleeve; 4. Inclined annular groove; 5. Transmission rod; 6. Transmission column; 7. Guide ball; 8. Fixing rod; 9. Crushing bar; 10. Filter screen; 11. First pipe; 12. First valve; 13. Second pipe; 14. Three-way valve; 15. Third pipe; 16. Storage tank; 17. Fourth pipe; 18. Fifth pipe; 19. Second valve; 20. Collection box; 21. Water pump; 22. Sixth pipe. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please refer to Figures 1 to 4 This utility model provides a modular filtration device for an integrated sewage treatment system, which aims to solve the problem that the existing filtration equipment lacks an effective physical breaking and agitation structure for the compacted filter media, resulting in poor backwashing effect.

[0025] like Figure 1 As shown, the modular filtration device of the integrated sewage treatment equipment includes a housing 1 and a motor 2 fixedly connected to the top of the housing 1. The housing 1 serves as the main support of the entire equipment, and multiple filter screens 10 are arranged vertically inside it. The motor 2 provides a power source for the mechanical movement mechanism inside the equipment.

[0026] Specifically, refer to Figure 1 , Figure 2 and Figure 3The transmission mechanism of the equipment includes a fixed sleeve 3, a transmission rod 5, a transmission column 6, a fixed rod 8, and a crushing bar 9. The fixed sleeve 3 is fixedly connected to the inside of the top wall of the outer casing 1 by welding or bolting. A continuous inclined annular groove 4 is formed on the inner wall of the fixed sleeve 3. The bottom of the inclined annular groove 4 changes periodically in the annular direction. One end of the transmission rod 5 passes through the top wall of the outer casing 1 and is fixedly connected to the output end of the motor 2 to receive the rotational power output by the motor 2. The other end of the transmission rod 5 extends downward into the inside of the outer casing 1. The outer circumference of the transmission rod 5 is provided with a keyway or non-circular cross section for cooperating with the transmission column 6 to transmit torque, so as to ensure reliable torque transmission. The transmission column 6 is a hollow structure, which is rotatably connected to the inside of the fixed sleeve 3 and slidably sleeved on the outside of the transmission rod 5, so that the transmission column 6 can rotate synchronously with the transmission rod 5 and in the axial direction of the transmission rod 5. The transmission column 6 slides upwards, and at least one guide ball 7 is fixedly connected to the outer wall of the transmission column 6. The ball part of the guide ball 7 is slidably accommodated in the inclined annular groove 4. When the transmission rod 5 drives the transmission column 6 to rotate, the guide ball 7 moves along the trajectory of the inclined annular groove 4, forcing the transmission column 6 to rotate around the transmission rod 5 and reciprocate up and down along the axis of the transmission rod 5 at the same time, thereby realizing a compound motion combining rotation and reciprocation. The top end of the fixed rod 8 is fixedly connected to the bottom wall of the transmission column 6 to transmit the compound motion of the transmission column 6 downwards. Multiple crushing rods 9 are fixedly connected to the surface of the fixed rod 8. These crushing rods 9 extend radially from the surface of the fixed rod 8 and extend downwards into the space between two adjacent filter screens 10. The crushing rod 9 includes a rod body and multiple crushing teeth extending radially from the rod body, which are used to fully agitate and loosen the filter medium between the filter screens 10 under the compound motion.

[0027] Inside the outer casing 1, multiple horizontally arranged filter screens 10 are fixed at intervals along its height. These filter screens 10 are supported by support rings fixed to the inner wall of the outer casing 1, thereby dividing the interior of the outer casing 1 into multiple filtration chambers. From top to bottom, the pore size of these filter screens 10 decreases sequentially to form a gradient filtration. In particular, the topmost filter screen 10 and the second highest filter screen 10 immediately below it have the same pore size. This arrangement is designed to effectively intercept light filter media that float to the surface due to water flow during backwashing, preventing their loss. Between two adjacent filter screens 10, anthracite, quartz sand, and garnet are sequentially filled from top to bottom as filter media, wherein anthracite... The top layer, with larger particle diameter and lower density, is mainly used to intercept large suspended particles. Quartz sand is located in the middle layer to remove finer impurities, while garnet, with the smallest particle diameter and highest density, is located at the bottom layer for final fine filtration. This arrangement based on density and particle size differences ensures that even after backwashing, each layer of filter media can automatically restore its original layer structure through gravity. The rod part of the aforementioned crushing rod 9 passes through these filter media layers, and its crushing teeth extend into the interior of each filter media layer, ensuring that each layer of compacted media, from anthracite to garnet, can be properly physically loosened during backwashing.

[0028] Based on the above embodiments, the present invention may further include the following preferred technical solutions: As a preferred embodiment, in order to achieve the recycling of wastewater inlet, filtered water outlet, and backwash water, the equipment is also equipped with a complete piping system, please refer to... Figure 1 and Figure 4 The pipeline system includes a first pipe 11, which is fixedly installed on the top surface of the outer casing 1 for introducing sewage to be treated from an external sewage source. A first valve 12 is installed on the first pipe 11 for controlling the opening and closing of the water inlet. The pipeline system also includes a second pipe 13, which is installed on the bottom surface of the outer casing 1 for discharging clean water filtered by the filter screen 10 and the filter medium.

[0029] As a further optimization of the above-mentioned pipeline system, in order to realize the storage and diversion of filtered clean water, the device also includes a storage tank 16. One end of the second pipe 13 is connected to a three-way valve 14. The three-way valve 14 is connected to the top or side wall of the storage tank 16 through a third pipe 15. By controlling the switching of the three-way valve 14, part of the clean water flowing out of the second pipe 13 can be directly output to the outside, while the other part enters the storage tank 16 for storage, in preparation for subsequent backwashing processes.

[0030] As a further preferred option, in order to utilize the stored clean water for efficient backwashing, the equipment also includes a backwashing circuit, which consists of a water pump 21, a fourth pipe 17, and a sixth pipe 22. The fourth pipe 17 connects the bottom of the storage tank 16 to the input end of the water pump 21 and is used to extract clean water from the storage tank 16. The sixth pipe 22 connects the output end of the water pump 21 to the bottom of the outer casing 1. Specifically, it can be connected to the second pipe 13 or through a separate interface, and is used to inject pressurized clean water from the bottom of the equipment in reverse to flush the filter media upward.

[0031] Finally, to improve the backwashing process and effectively discharge the wastewater generated during backwashing, the equipment also includes a sewage discharge pipeline. This sewage discharge pipeline consists of a fifth pipe 18, a second valve 19, and a collection box 20. The fifth pipe 18 is connected to the upper part of the outer casing 1 and is used to collect the turbid wastewater overflowing from the top of the equipment during backwashing. The second valve 19 is installed on the fifth pipe 18 and is used to control the opening and closing of the sewage discharge channel. The collection box 20 is connected to the end of the fifth pipe 18 and is used to temporarily collect or directly transfer backwash wastewater.

[0032] The working principle of the modular filtration device in this integrated wastewater treatment equipment is as follows: In normal filtration mode, the first valve 12 is open, the second valve 19 is closed, and the three-way valve 14 is switched to the external drainage position. The sewage to be treated enters the top of the outer shell 1 through the first pipe 11 and passes through the anthracite, quartz sand and garnet filter layers and the filter screens 10 of each level in sequence under the action of gravity. The suspended solids and impurities in the water are intercepted layer by layer. The filtered clean water is discharged from the bottom of the outer shell 1 through the second pipe 13 and the three-way valve 14. Some of the clean water can also be stored in the storage tank 16 through the third pipe 15 by switching the three-way valve 14.

[0033] When backwashing is required, first close the first valve 12, open the second valve 19, and completely switch the three-way valve 14 to the path leading to the storage tank 16 or close the external drainage path. Then start the motor 2 and the water pump 21. The motor 2 drives the transmission column 6 to rotate through the transmission rod 5. Due to the sliding constraint of the guide ball 7 in the inclined annular groove 4, the transmission column 6 will move up and down along the axis of the transmission rod 5 while rotating. This compound motion is transmitted to the crushing rod 9 through the fixed rod 8, so that the crushing rod 9 rotates and agitates up and down in the filter media layer, thereby powerfully loosening and crushing the already hardened filter media.

[0034] At the same time, the water pump 21 pressurizes the clean water in the storage tank 16 through the fourth pipe 17 and the sixth pipe 22, and then flushes it back into the bottom of the outer shell 1. The powerful backwash water flow impacts the filter medium that has been loosened by the crushing rod 9, peeling off the dirt attached to the surface of the medium particles and moving upward with the water flow. Finally, the turbid backwash water carrying the dirt flows out from the fifth pipe 18 at the top of the outer shell 1, enters the collection tank 20 through the second valve 19, and completes a thorough physical and hydraulic combined backwash process.

[0035] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A modular filtration device for an integrated sewage treatment equipment, comprising a housing (1) and a motor (2) fixedly connected to the top of the housing (1), wherein multiple filter screens (10) are arranged vertically inside the housing (1). Its features are, The device also includes: A fixed sleeve (3) is fixedly connected to the top wall of the outer shell (1), and its inner wall is provided with an inclined annular groove (4). The transmission rod (5) has one end fixedly connected to the output end of the motor (2) and extends downward through the top wall of the outer casing (1); The transmission column (6) is rotatably connected to the inside of the fixed sleeve (3) and is slidably sleeved on the outside of the transmission rod (5) to rotate synchronously with it. A guide ball (7) is fixedly connected to the outer wall of the transmission column (6) and the guide ball (7) is slidably accommodated in the inclined annular groove (4). A fixed rod (8) is fixedly connected to the bottom wall of the transmission column (6); Multiple breaking rods (9) are fixedly connected to the surface of the fixing rod (8) and extend into the space between adjacent filter screens (10).

2. The modular filtration device of the integrated sewage treatment equipment according to claim 1, characterized in that, The pore size of the plurality of filters (10) decreases from top to bottom, and the pore size of the topmost filter (10) is the same as that of the second highest filter (10) immediately below it.

3. The modular filtration device of the integrated sewage treatment equipment according to claim 2, characterized in that, The space between two adjacent filter screens (10) is filled with anthracite, quartz sand and garnet from top to bottom.

4. The modular filtration device of the integrated sewage treatment equipment according to claim 1, characterized in that, The crushing rod (9) includes a rod body and a plurality of crushing teeth extending radially from the rod body.

5. The modular filtration device of the integrated sewage treatment equipment according to claim 1, characterized in that, The outer circumferential surface of the transmission rod (5) is provided with a keyway or a non-circular cross section for cooperating with the transmission column (6) to transmit torque.

6. The modular filtration device of the integrated sewage treatment equipment according to claim 1, characterized in that, The device also includes: A first pipe (11) is fixedly installed on the top surface of the outer casing (1) for water inlet, and a first valve (12) is provided on the first pipe (11). A second pipe (13) is provided at the bottom of the surface of the outer casing (1) for water outlet.

7. The modular filtration device of the integrated sewage treatment equipment according to claim 6, characterized in that, The device also includes a storage tank (16), and one end of the second pipe (13) is connected to a three-way valve (14), which is connected to the storage tank (16) through a third pipe (15).

8. The modular filtration device of the integrated sewage treatment equipment according to claim 7, characterized in that, The device also includes a water pump (21), a fourth pipe (17) and a sixth pipe (22), the fourth pipe (17) connecting the bottom of the storage tank (16) to the input end of the water pump (21), and the sixth pipe (22) connecting the output end of the water pump (21) to the bottom of the outer casing (1).

9. The modular filtration device of the integrated sewage treatment equipment according to claim 8, characterized in that, The device also includes a fifth pipe (18), a second valve (19), and a storage box (20). The fifth pipe (18) is connected to the upper part of the outer shell (1), the second valve (19) is disposed on the fifth pipe (18), and the storage box (20) is connected to the end of the fifth pipe (18).

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