Backflow assembly of sewage pretreatment device

Abstract

The utility model discloses a backflow assembly of a sewage pretreatment device, and belongs to the technical field of sewage pretreatment, the backflow assembly comprises a drainage pipe, a connecting pipe, a filter screen plate and a cleaning assembly, one end of the drainage pipe is detachably connected with a blow-off pipe, the other end of the drainage pipe is used for discharging impurities, and the drainage pipe communicates with the connecting pipe detachably connected with a backflow pipe; a filter screen plate is arranged at one end of the connecting pipe, a cleaning assembly is arranged on the drainage pipe, and the cleaning assembly is used for removing impurities on the filter screen plate. According to the utility model, impurities in sewage can be filtered through the filter screen plate, and the filtered sewage can flow into the sewage pretreatment device again through the connecting pipe and the return pipe, so that the sewage is filtered and returned, the waste of sewage resources is effectively avoided, the unfiltered sewage is prevented from being directly discharged out of the tank body, and the pollution to the environment is avoided. The sewage filtering integrity of the sewage pretreatment device is ensured, and the filtering effect and the use reliability are improved.

Description

Technical Field

[0001] This utility model relates to the field of wastewater pretreatment technology, and in particular to a reflux component of a wastewater pretreatment device. Background Technology

[0002] Centralized wastewater treatment in industrial production enterprises and decentralized wastewater treatment in residential areas both require wastewater pretreatment. Wastewater pretreatment is a crucial step before wastewater enters further treatment processes such as flocculation, biological treatment, or chemical treatment. If wastewater pretreatment does not meet standards, it can easily lead to significant damage to subsequent treatment equipment, devices, or structures. Specifically, wastewater pretreatment generally includes solid-liquid separation, which filters out solid impurities from the wastewater to reduce wear and tear on subsequent wastewater treatment equipment and improve the efficiency and effectiveness of subsequent wastewater treatment.

[0003] Wastewater pretreatment devices typically employ filters to physically filter impurities from wastewater. To prevent filter clogging after prolonged use and to improve filtration efficiency, impurities are regularly removed from the filters. Furthermore, to ensure continuous operation and minimize downtime, filter cleaning can be performed while the device is running. However, during operation, some unfiltered wastewater is easily discharged directly outside the discharge mechanism (such as a scraper) through a drain pipe or outlet. This not only wastes wastewater resources but also compromises the integrity of the filtration process, making it difficult to guarantee filtration effectiveness and reducing the device's reliability. Therefore, the applicant proposes a recirculation component for a wastewater pretreatment device. This component allows for the re-filtration and recirculation of unfiltered wastewater back into the tank, while ensuring the discharge mechanism effectively removes and discharges impurities. Utility Model Content

[0004] The main objective of this invention is to provide a reflux component for a wastewater pretreatment device, which aims to solve the problems that wastewater pretreatment devices not only waste wastewater resources, but also damage the integrity of wastewater filtration, make it difficult to guarantee filtration effect, and reduce reliability.

[0005] To achieve the above objectives, this utility model provides a return component for a wastewater pretreatment device. This component is installed on the discharge pipe of the wastewater pretreatment device and is used to return wastewater back into the device. The wastewater pretreatment device has a return pipe, which includes a guide pipe, a connecting pipe, a filter screen, and a cleaning component. One end of the guide pipe is detachably connected to the discharge pipe, and the other end is used to discharge impurities. The guide pipe is connected to the connecting pipe, which is detachably connected to the return pipe. The filter screen is located at one end of the connecting pipe near the guide pipe, and the cleaning component is located on the guide pipe at a position corresponding to the filter screen. The cleaning component is used to remove impurities from the filter screen.

[0006] Preferably, the body of the drainage pipe is inclined relative to the sewage pipe.

[0007] Preferably, the connecting pipe is detachably connected to the drainage pipe by a number of locking components. A groove for installing the filter screen is provided at one end of the connecting pipe near the drainage pipe. A sealing ring is provided between the filter screen and the bottom of the groove. The drainage pipe is provided with a through hole for the filter screen to extend into.

[0008] Preferably, a through groove is provided on the drainage pipe corresponding to the position of the filter screen plate. The cleaning component includes a handle, a connecting rod and a scraper. The connecting rod is detachably inserted into the through groove. The scraper extends into the drainage pipe through the through groove and is used to remove impurities on the filter screen plate. The two ends of the connecting rod are detachably connected to the scraper and the handle, respectively.

[0009] Preferably, the cleaning assembly includes a drive component, a connecting rod, and a scraper. The drive component is detachably mounted on the drainage pipe. The two ends of the connecting rod are detachably connected to the scraper and the power output end of the drive component, respectively. A through groove is provided on the drainage pipe at the position corresponding to the filter screen for the connecting rod and the scraper to extend into, so that the drive component can drive the scraper to rotate and remove impurities from the filter screen.

[0010] Preferably, the end of the scraper that abuts against the filter screen is tapered from top to bottom.

[0011] Preferably, a sealing ring is provided between the drain pipe and the sewage pipe, and between the connecting pipe and the return pipe.

[0012] Beneficial effects:

[0013] 1. In the reflux assembly of the wastewater pretreatment device of this utility model, impurities in the wastewater can be filtered out by the filter screen, and the filtered wastewater can flow back into the wastewater pretreatment device through the connecting pipe and the reflux pipe, thereby realizing the filtration and reflux operation of wastewater, effectively avoiding the waste of wastewater resources, preventing unfiltered wastewater from being directly discharged outside the tank, ensuring the integrity of wastewater filtration by the wastewater pretreatment device, and improving the filtration effect and reliability of use.

[0014] 2. In the return assembly of the wastewater pretreatment device of this utility model, the cleaning assembly can push impurities to the end of the diversion pipe away from the discharge pipe. This not only facilitates the centralized collection of impurities and prevents environmental pollution, but also cleans the filter screen, effectively avoiding clogging of the filter screen, ensuring the filtration effect of the filter screen on wastewater, and thus ensuring the efficient and continuous operation of the wastewater pretreatment device and its reliable use. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the installation of a reflux component of a wastewater pretreatment device according to an embodiment of the present invention on the wastewater pretreatment device;

[0017] Figure 2 This is a top view of a reflux component of a wastewater pretreatment device according to an embodiment of the present invention, on the wastewater pretreatment device.

[0018] Figure 3 yes Figure 2 Cross-sectional view at point AA;

[0019] Figure 4 yes Figure 3 A magnified view of a section at point B in the middle;

[0020] Figure 5 This is an exploded view of the reflux component of a wastewater pretreatment device according to an embodiment of this utility model.

[0021] In the figure: 100-sewage pretreatment device; 101-filtration mechanism; 102-drive mechanism; 103-sewage discharge mechanism; 200-a return component of a sewage pretreatment device; 1-return pipe; 2-drainage pipe; 3-connecting pipe; 4-filter screen; 5-cleaning component; 6-groove; 7-sealing ring; 8-through groove; 9-connecting rod; 10-scraper; 11-sealing ring. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] In the description of this application, it should be noted that the use of terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" to indicate orientation or positional relationships is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product is in use. These terms are used solely for the convenience of describing this application and for simplifying the description, and 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. Therefore, they should not be construed as limitations on this application. Furthermore, the use of terms such as "first" and "second" in the description of this application is only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] Furthermore, the use of terms such as "horizontal" and "vertical" in the description of this application does not imply that the component is required to be absolutely horizontal or suspended, but rather that it may be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but rather that it may be slightly tilted.

[0027] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0028] Example 1:

[0029] This utility model proposes a reflux component 200 for a wastewater pretreatment device.

[0030] In one embodiment of this utility model, a return component 200 of a sewage pretreatment device is disposed on the sewage discharge pipe of the sewage pretreatment device 100 and is used to return sewage back to the sewage pretreatment device 100. The sewage pretreatment device 100 is provided with a return pipe 1, including a diversion pipe 2, a connecting pipe 3, a filter screen 4 and a cleaning component 5. One end of the diversion pipe 2 is detachably connected to the sewage discharge pipe, and the other end of the diversion pipe 2 is used to discharge impurities. The diversion pipe 2 is connected to the connecting pipe 3, which is detachably connected to the return pipe 1. The end of the connecting pipe 3 near the diversion pipe 2 is provided with a filter screen 4, and the diversion pipe 2 is provided with a cleaning component 5 at the position corresponding to the filter screen 4. The cleaning component 5 is used to remove impurities on the filter screen 4.

[0031] It should be noted that, as Figures 1 to 4 As shown, when the filter mechanism 101 of the wastewater pretreatment device 100 becomes clogged during operation, the drive mechanism 102 within the wastewater pretreatment device 100 drives the filter mechanism 101 to rotate. This causes the discharge mechanism 103 to scrape the impurities on the filter mechanism 101 and guide them towards the discharge pipe for discharge, thus completing the cleaning operation of the filter mechanism 101 and ensuring its filtration effect. However, as wastewater continues to be transported into the wastewater pretreatment device 100, the wastewater may flow towards the discharge pipe under the action of centrifugal force and the discharge mechanism 103. This not only easily wastes wastewater resources but also damages the integrity of the wastewater filtration provided by the wastewater pretreatment device 100, making it difficult to guarantee the filtration effect and reducing its reliability.

[0032] To address the problems existing in the wastewater pretreatment device 100, a return component 200 of the wastewater pretreatment device of this invention can be installed on the sewage discharge pipe of the wastewater pretreatment device 100. This allows the wastewater flowing out of the sewage discharge pipe to be filtered, impurities removed, and then returned to the wastewater pretreatment device 100. Specifically, as shown... Figures 1 to 5As shown, since one end of the diversion pipe 2 is detachably connected to the sewage pipe, and the connecting pipe 3 is detachably connected to the return pipe 1, all four pipes can be detachably connected by flange threaded connection, which facilitates disassembly and assembly of this utility model and is convenient for maintenance. Furthermore, when sewage flows out of the sewage pipe, it flows into the diversion pipe 2. Since the diversion pipe 2 is connected to the connecting pipe 3, and a filter screen 4 is provided at one end of the connecting pipe 3 near the diversion pipe 2, the sewage flows through the connecting pipe 3 when it flows in the diversion pipe 2. The filter screen 4 can filter out impurities in the sewage, and the filtered sewage in the connecting pipe 3 continues to flow into the return pipe 1 and then flows back into the sewage pretreatment device 100 through the return pipe 1. This achieves the filtration and return operation of sewage, effectively avoiding the waste of sewage resources, preventing unfiltered sewage from being directly discharged outside the tank, ensuring the integrity of sewage filtration by the sewage pretreatment device 100, and improving the filtration effect and reliability of use.

[0033] Understandably, after the filter screen 4 removes impurities from the sewage, the impurities remain on the filter screen 4. Since a cleaning component 5 is provided on the drain pipe 2 at the position corresponding to the filter screen 4, the cleaning component 5 can be a pusher plate that moves back and forth via a linear drive mechanism 102, as is the case in the prior art. This allows the cleaning component 5 to push the impurities to the end of the drain pipe 2 away from the sewage pipe. This not only facilitates the centralized collection of impurities and prevents environmental pollution, but also cleans the filter screen 4, effectively preventing the filter screen 4 from becoming clogged. This ensures the filtration effect of the filter screen 4 on the sewage, thereby ensuring the efficient and continuous operation of the sewage pretreatment device 100 and its reliable use.

[0034] In one embodiment, specifically, as Figure 4 and Figure 5 As shown, the body of the drainage pipe 2 is inclined relative to the sewage pipe, so that the impurities filtered by the filter screen 4 can slide relative to the drainage pipe 2 under the action of gravity, thereby facilitating the discharge of impurities to the outside of the drainage pipe 2 and preventing impurities from accumulating and clogging inside the drainage pipe 2. The structural design is simple and reasonable.

[0035] In one embodiment, the connecting pipe 3 is detachably connected to the drainage pipe 2 via several locking components. A groove 6 for installing a filter screen plate 4 is provided at one end of the connecting pipe 3 near the drainage pipe 2. A sealing ring 7 is provided between the filter screen plate 4 and the bottom of the groove 6, and a through hole is provided on the drainage pipe 2 for the filter screen plate 4 to extend into. Specifically, as shown... Figure 4 and Figure 5As shown, several locking components can be connected by bolts as in existing technology, thereby enabling multi-point connection and fixation between the connecting pipe 3 and the drainage pipe 2, and facilitating disassembly and assembly of the connecting pipe 3 or the drainage pipe 2 for easy maintenance. Furthermore, by creating a groove 6 on the connecting pipe 3 near the drainage pipe 2 for installing the filter screen plate 4, a relatively stable installation position for the filter screen plate 4 is provided, improving the installation stability of the filter screen plate 4. Simultaneously, the filter screen plate 4 can be installed in the groove 6 using a threaded connection, facilitating disassembly and replacement of the filter screen plate 4. Understandably, by setting a sealing ring 7 between the filter screen plate 4 and the bottom of the groove 6, leakage of sewage between the filter screen plate 4 and the groove 6 can be effectively prevented, ensuring the filtration effect and backflow stability of the sewage. In addition, the through hole in the drainage pipe 2 allows the filter screen plate 4 to smoothly extend into the drainage pipe 2 and contact the sewage flowing through it, thus achieving the filtration effect. The structural design is simple and reasonable.

[0036] In one embodiment, a through groove 8 is provided on the drainage pipe 2 at the position corresponding to the filter screen plate 4. The cleaning component 5 includes a handle, a connecting rod 9, and a scraper 10. The connecting rod 9 is detachably inserted into the through groove 8, and the scraper 10 extends into the drainage pipe 2 through the through groove 8 to remove impurities on the filter screen plate 4. Both ends of the connecting rod 9 are detachably connected to the scraper 10 and the handle, respectively. It can be understood that, as Figure 4 and Figure 5 As shown, the connecting rod 9 and the through groove 8 can be detachably installed using a threaded connection. This not only allows the connecting rod 9 to be securely installed in the through groove 8, but also allows the connecting rod 9 to rotate relative to the drainage pipe 2. The structural design is ingenious and reasonable. Furthermore, since the scraper 10 extends into the drainage pipe 2 through the through groove 8, and both ends of the connecting rod 9 are detachably connected to the scraper 10 and the handle, respectively, the operator can rotate the connecting rod 9 and the scraper 10 by turning the handle, thereby scraping and cleaning impurities on the filter screen 4. The operation is simple and convenient, and it effectively ensures the filtration effect of the filter screen 4 on sewage.

[0037] In one embodiment, the cleaning component 5 includes a drive member, a connecting rod 9, and a scraper 10. The drive member is detachably mounted on the drainage pipe 2. Both ends of the connecting rod 9 are detachably connected to the scraper 10 and the power output end of the drive member, respectively. A through groove 8 is provided on the drainage pipe 2 at a position corresponding to the filter screen 4, allowing the connecting rod 9 and the scraper 10 to extend into it, so that the drive member can rotate the scraper 10 and remove impurities from the filter screen 4. Specifically, as shown... Figure 4 and Figure 5As shown, since the driving component is detachably mounted on the drainage pipe 2, the driving component can be a motor as in the prior art, and the detachable mounting method between the driving component and the drainage pipe 2 can be a threaded connection, thus facilitating the disassembly and assembly of the driving component. Furthermore, since both ends of the connecting rod 9 are detachably connected to the scraper 10 and the power output end of the driving component respectively, the scraper 10 and the connecting rod 9 can rotate relative to the filter screen 4 under the action of the driving component, thereby scraping and cleaning impurities on the filter screen 4. This eliminates the need for manual cleaning of the filter screen 4 by personnel, reducing labor intensity and improving cleaning efficiency. It is worth noting that the driving component can communicate with the control system of the sewage pretreatment device 100, enabling the filter screen 4 to be cleaned periodically through the control system. This improves the automation and intelligence of this invention, making it more convenient to use and ensuring the efficient and continuous operation of the sewage pretreatment device 100.

[0038] In one embodiment, specifically, as Figure 5 As shown, the end of the scraper 10 that abuts against the filter screen 4 is gradually tapered from top to bottom, thereby reducing the contact area between the scraper 10 and the filter screen 4, preventing the scraper 10 from scratching the filter screen 4 during the process of scraping and cleaning impurities, and thus extending the service life of the filter screen 4.

[0039] In one embodiment, specifically, as Figure 5 As shown, sealing rings 11 are provided between the diversion pipe 2 and the sewage pipe, and between the connecting pipe 3 and the return pipe 1, which can effectively prevent sewage from leaking between the diversion pipe 2 and the sewage pipe, and between the connecting pipe 3 and the return pipe 1, ensuring the stability of sewage return and reliable use.

[0040] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A return flow assembly for a wastewater pretreatment device, disposed on the discharge pipe of the wastewater pretreatment device and used to return wastewater back into the wastewater pretreatment device, wherein the wastewater pretreatment device is provided with a return flow pipe (1), characterized in that, The device includes a drain pipe (2), a connecting pipe (3), a filter screen (4), and a cleaning component (5). One end of the drain pipe (2) is detachably connected to the drain pipe, and the other end of the drain pipe (2) is used to discharge impurities. The drain pipe (2) is connected to the connecting pipe (3), which is detachably connected to the return pipe (1). The filter screen (4) is provided at one end of the connecting pipe (3) near the drain pipe (2), and the cleaning component (5) is provided on the drain pipe (2) at a position corresponding to the filter screen (4). The cleaning component (5) is used to remove impurities from the filter screen (4).

2. The reflux assembly of a wastewater pretreatment device according to claim 1, characterized in that, The drain pipe (2) is inclined relative to the sewage pipe.

3. The reflux assembly of a wastewater pretreatment device according to claim 2, characterized in that, The connecting pipe (3) is detachably connected to the drain pipe (2) by several locking parts. A groove (6) for installing the filter screen plate (4) is provided at one end of the connecting pipe (3) near the drain pipe (2). A sealing ring (7) is provided between the filter screen plate (4) and the bottom of the groove (6). A through hole is provided on the drain pipe (2) for the filter screen plate (4) to extend into.

4. The reflux assembly of a wastewater pretreatment device according to any one of claims 1-3, characterized in that, The drain pipe (2) has a through groove (8) at the position corresponding to the filter screen plate (4). The cleaning component (5) includes a handle, a connecting rod (9) and a scraper (10). The connecting rod (9) is detachably inserted into the through groove (8). The scraper (10) extends into the drain pipe (2) through the through groove (8) and is used to remove impurities on the filter screen plate (4). The two ends of the connecting rod (9) are detachably connected to the scraper (10) and the handle, respectively.

5. A reflux assembly of a wastewater pretreatment device according to any one of claims 1-3, characterized in that, The cleaning component (5) includes a drive unit, a connecting rod (9) and a scraper (10). The drive unit is detachably mounted on the drainage pipe (2). The two ends of the connecting rod (9) are detachably connected to the scraper (10) and the power output end of the drive unit, respectively. The drainage pipe (2) has a through groove (8) at the position corresponding to the filter screen (4) for the connecting rod (9) and the scraper (10) to extend into, so that the scraper (10) can be rotated by the drive unit to remove impurities on the filter screen (4).

6. The reflux assembly of a wastewater pretreatment device according to claim 5, characterized in that, The scraper (10) is designed to taper from top to bottom at the end that abuts against the filter screen (4).

7. The reflux assembly of a wastewater pretreatment device according to claim 6, characterized in that, A sealing ring (11) is provided between the drain pipe (2) and the sewage pipe, and between the connecting pipe (3) and the return pipe (1).

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