A pre-filter device for sewage pipe network
By designing a sewage pipeline pre-filtering device including a box, a first partition and a filter assembly, the problems of unstable filtration effect, high maintenance cost and short service life in the prior art are solved, and higher filtration effect stability and equipment service life are achieved.
Patent Information
- Application Number
- CN202421403065.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-19
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2034-06-19
AI Technical Summary
The existing sewage pipeline pre-filtering devices have problems such as unstable filtration effect, high maintenance cost and short service life.
A pre-filtering device for sewage pipe networks including a box, a first partition and a filter assembly is designed. The box is divided into a first cavity and a second cavity that are independent of each other through the first partition, and filtering is performed by the dual action of gravity and filtration, and backflushing is achieved through liquid level difference to reduce maintenance costs.
It effectively reduces the risk of blockage in monitoring equipment, improves the accuracy and stability of monitoring data, reduces maintenance costs and extends the service life of the equipment, and improves the stability of the filtering effect.
Smart Images
Figure CN222723749U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sewage treatment, in particular to a pre-filtering device for a sewage pipe network. Background Art
[0002] Currently, sewage pipe network monitoring and early warning systems are widely used in urban drainage systems. However, due to the large amount of impurities and particulate matter in sewage, there is a risk of clogging sensors, affecting the accuracy of monitoring data, and damaging monitoring equipment, reducing its service life. Furthermore, the complex and variable composition of sewage, with significant variations in water quality at different times and locations, also poses challenges to the stable operation of monitoring systems.
[0003] In order to solve the above problems, the application of pre-filter devices in sewage pipe network monitoring and early warning systems is particularly important. Although there are some pre-filter devices used in sewage pipe network monitoring and early warning systems on the market, these devices often have problems such as unstable filtering effect, high maintenance cost and short service life.
[0004] Therefore, how to provide a pre-filter device with stable filtering effect, low operation and maintenance cost and long service life is a problem that technical personnel in this field urgently need to solve. Utility Model Content
[0005] In view of this, the utility model provides a pre-filter device for a sewage pipe network to solve the problems of unstable filtering effect, high maintenance cost and short service life of the existing pre-filter device.
[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:
[0007] A sewage pipe network pre-filter device comprises a box body, wherein a first partition is provided in the box body, and the box body is divided into a first cavity and a second cavity which are independent of each other by the first partition;
[0008] A second partition and a first filter assembly are provided in the first cavity, the first filter assembly is provided near the closed end of the first cavity, the second partition extends from the open end of the first cavity toward the closed end until it abuts against the first filter assembly, and the space enclosed by the first partition, the second partition, the first filter assembly and the outer wall of the first cavity forms a first filter cavity;
[0009] The first filter cavity and the second cavity are connected through a water inlet pipe, one end of the water inlet pipe extends into the interior of the second cavity and is close to the closed end of the second cavity; at least one of the first cavity and the second cavity is provided with an overflow assembly.
[0010] Preferably, the space enclosed by the second partition, the first filter assembly, and the outer wall of the first cavity forms a water inlet cavity; the water inlet cavity is provided with a water inlet near the opening end of the first cavity, and a buffer and a first overflow assembly are provided at the bottom of the water inlet, and the buffer and the top of the first overflow assembly are flush.
[0011] Preferably, the first overflow assembly includes a first overflow weir and a first overflow outlet pipe, the first overflow weir is installed on the side wall of the water inlet chamber and the top of the first overflow weir is flush with the buffer member, and the first overflow outlet pipe is arranged at one end near the bottom of the first overflow weir.
[0012] Preferably, a second overflow assembly is provided on one side of the interior of the second cavity, and the second overflow assembly includes a second overflow weir and a second overflow outlet pipe. The second overflow weir is installed on the side wall of the second cavity and close to the opening end of the second cavity, and the second overflow outlet pipe is connected to the bottom end close to the second overflow weir.
[0013] Preferably, the distance between the top of the first overflow weir and the open end of the box body is set to c, and the distance between the top of the second overflow weir and the open end of the box body is set to d, then d≥c.
[0014] Preferably, a water outlet is provided in the middle of the side wall of the second cavity, and a filter is provided at the water outlet.
[0015] Preferably, a third partition is provided in the box body, the third partition is located between the first partition and the second partition, the third partition extends from the closed end of the box body toward the open end and is close to the open end of the box body, and the box body is divided into a first cavity, a third cavity and a second cavity by the third partition and the first partition;
[0016] A fourth partition and a second filter assembly are provided in the third cavity, the second filter assembly is provided near the closed end of the third cavity, the fourth partition extends from the open end of the third cavity toward the closed end until it abuts against the second filter assembly, and the space surrounded by the first partition, the fourth partition, the second filter assembly and the outer wall of the third cavity forms a second filter cavity, and the second filter cavity and the second cavity are connected through the water inlet pipe.
[0017] Preferably, there are multiple third cavities, and the multiple third cavities are arranged in series.
[0018] Preferably, the bottoms of the first cavity, the second cavity and the third cavity are all connected to the main drainage pipe through a one-way valve.
[0019] Preferably, the first filter assembly and the second filter assembly both include a filter plate, a support frame and a mounting frame. One end of the mounting frame is movably connected to the filter plate through the support frame, and the other end is detachably mounted on the top of the box.
[0020] The utility model provides a sewage pipe network pre-filter device, which has the following advantages compared with the prior art:
[0021] In the device of the present invention, the first partition divides the box into a first cavity and a second cavity that are independent of each other. By arranging the first filter component at the bottom end of the first cavity, on the one hand, larger particles of impurities can be retained outside the first filter cavity under the dual effects of gravity and filtration, which can effectively reduce the risk of clogging of the monitoring equipment, protect the monitoring equipment from damage, and effectively improve the accuracy, reliability and stability of the monitoring data. On the other hand, during the drainage process, the liquid level difference in the box can be used to achieve backwashing of the first filter component, avoiding clogging during long-term use, reducing maintenance costs and effectively increasing the service life of the equipment.
[0022] In addition, an overflow component is provided in the first cavity and / or the second cavity, which not only ensures that the water in the sewage network circulates in real time in the box without affecting the timeliness of the back-end water quality monitoring, but also reduces the flow area of the sewage in the first filter component, increases the residence time of the sewage in the box, and improves the stability of the filtering effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.
[0024] Figure 1 This is a schematic diagram of the structure of the utility model device Figure 1 ;
[0025] Figure 2 This is a schematic diagram of the structure of the utility model device Figure 2 ;
[0026] Figure 3 yes Figure 2 A top view of the portion below the middle end cover;
[0027] Figure 4 yes Figure 2 A cross-sectional view of the central axis;
[0028] Figure 5 It is a partial schematic diagram of the first overflow weir in the device of the utility model;
[0029] Figure 6 It is a partial schematic diagram of the second overflow weir in the device of the utility model;
[0030] Figure 7 It is a schematic diagram of the filter assembly in the device of the utility model;
[0031] Figure 8 yes Figure 6 Side view of the filter assembly.
[0032] In the figure, 100-box, 110-bracket, 120-end cover, 121-end cover handle, 200-first cavity, 210-first filter assembly, 211-filter orifice plate, 212-support frame, 213-mounting frame, 214-support rod, 220-first water inlet pipe, 230-buffer, 240-first overflow weir, 250-first overflow outlet pipe, 300-second cavity, 310-second water inlet pipe, 320-second overflow weir, 330-second overflow outlet pipe, 340-outlet pipe, 350-filter element, 400-third cavity, 410-second filter assembly, 510-first partition, 520-second partition, 530-third partition, 540-fourth partition, 610-overflow main pipe, 620-drainage main pipe, 630-electric ball valve, 640-check valve. DETAILED DESCRIPTION
[0033] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0034] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.
[0035] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout this application, unless otherwise specified, "plurality" means two or more.
[0036] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.
[0037] like Figure 1-4 As shown, an embodiment of the present invention provides a sewage pipe network pre-filter device, comprising a housing 100 and a bracket 110. The housing 100 is supported on the ground by the bracket 110. The bracket 110 may be a support leg, which is not particularly limited thereto, and the housing 100 may be moved according to actual needs, making the use of the housing 100 convenient and flexible. The open end of the housing 100 is provided with an end cap 120 to prevent the entry of external dust, impurities, etc., and the end cap 120 is provided with an end cap handle 121. The number of the end cap handles 121 is a, and a ≥ 1, preferably a = 2.
[0038] In some embodiments of the present invention, Figure 1 As shown, a first partition 510 is provided in the box body 100 , and the box body 100 is divided into a first cavity 200 and a second cavity 300 which are independent of each other by the first partition 510 .
[0039] Among them, the first cavity 200 is used for water intake and filtering, and the second cavity 300 is used for further processing the water and providing a sampling site to make the subsequent monitoring process smoother, protect the monitoring equipment from damage, and improve the accuracy and reliability of the monitoring data.
[0040] Optionally, a second partition 520 and a first filter assembly 210 are provided in the first cavity 200, the first filter assembly 210 is provided near the closed end of the first cavity 200, the second partition 520 extends from the open end of the first cavity 200 toward the closed end until it abuts against the first filter assembly 210, and the space surrounded by the first partition 510, the second partition 520, the first filter assembly 210 and the outer wall of the first cavity 200 forms a first filter cavity, and the space surrounded by the second partition 520, the first filter assembly 210 and the outer wall of the first cavity 200 forms a water inlet cavity.
[0041] Optionally, a water inlet is provided at the open end of the water inlet chamber near the first cavity 200, and a first water inlet pipe 220 is installed at the water inlet. One end of the first water inlet pipe 220 is connected to the sewage to be treated, and the other end extends into the first cavity 200 to guide the sewage to be treated into the water inlet chamber.
[0042] Optional, such as Figure 3As shown, a buffer member 230 and a first overflow assembly are provided in the water inlet chamber near the open end of the housing 100. Specifically, the buffer member 230 and the first overflow assembly are both located at the bottom of the nozzle of the first water inlet pipe 220, and the top of the first overflow assembly is flush with the buffer member 230. Preferably, the distance from the buffer member 230 to the top of the housing 100 is equal to the distance from the top of the first overflow assembly to the top of the housing 100. The buffer member 230 can be a buffer plate having a plurality of through holes formed therein, and the through holes can be circular, rectangular, or other shapes.
[0043] Optional, such as Figure 5 As shown, the first overflow assembly includes a first overflow weir 240 and a first overflow outlet pipe 250. The first overflow weir 240 is installed on the side wall of the water inlet chamber and the top of the first overflow weir 240 is flush with the buffer member 230. The first overflow outlet pipe 250 is arranged at one end near the bottom of the first overflow weir 240.
[0044] It can be understood that the treated sewage enters the water inlet chamber through the first water inlet pipe 220, and a part of the sewage flows directly into the chamber slowly through the through holes of the buffer plate. The sewage flowing into the water inlet chamber through the buffer plate is filtered from bottom to top through the first filter component 210, and the other part of the sewage is diverted to the first overflow weir 240 through the buffer plate and discharged to the overflow collection pipe 610 through the first overflow outlet pipe 250; the utility model realizes the diversion of the treated sewage by setting the buffer part 230 and the first overflow component, which can effectively reduce the flow area, increase the residence time of the sewage during the treatment process, and improve the treatment efficiency and stability.
[0045] Optionally, the first filter chamber and the second chamber 300 are connected through a second water inlet pipe 310, and one end of the second water inlet pipe 310 extends to the interior of the second chamber 300 and is close to the closed end of the second chamber 300, that is, the end of the second water inlet pipe 310 penetrates into the bottom area of the second chamber 300, thereby increasing the residence time of the sewage and improving the stability of the sewage treatment effect.
[0046] Optional, such as Figure 6 As shown, a second overflow assembly is provided on one side of the interior of the second cavity 300, and the second overflow assembly includes a second overflow weir 320 and a second overflow outlet pipe 330. The second overflow weir 320 is installed on the side wall of the second cavity 300 and close to the open end of the second cavity 300, and the second overflow outlet pipe 330 is connected to one end near the bottom of the second overflow weir 320.
[0047] Preferably, a water outlet is provided in the middle of the side wall of the second cavity 300, and a water outlet pipe 340 is installed at the water outlet. The "middle" is not the middle in an absolute sense, but needs to be understood as the position between the top of the second overflow weir 320 and the end of the second water inlet pipe 310. A filter element 350 is provided at the water outlet, and the filter element 350 can be a filter screen.
[0048] As will be appreciated, the filtered sewage enters the second chamber 300 through the second water inlet pipe 310. The sewage level steadily rises from the bottom of the second chamber 300. During this rising level, a portion of the sewage is filtered by the filter element 350 and then drawn out of the outlet pipe 340. The remaining sewage overflows upward, submerging the top of the second overflow weir 320 before being discharged through the second overflow outlet pipe 330 to the overflow manifold 610. The present invention achieves diversion of the sewage to be treated by providing a second overflow assembly, effectively reducing the flow area, increasing the residence time of the sewage during the treatment process, and improving treatment efficiency and stability.
[0049] Optionally, the distance between the top of the first overflow weir 240 and the open end of the box body 100 is set to c, and the distance between the top of the second overflow weir 320 and the open end of the box body 100 is set to d, then d≥c.
[0050] It is understandable that when overflow components are provided in both the first cavity 200 and the second cavity 300 , it is preferred that the treated sewage enters the box 100 through the water inlet pipe and is discharged mainly through the second overflow component, thereby achieving a steady-speed circulation and filtration function for the sewage.
[0051] In other embodiments of the present invention, Figure 2 As shown, a third partition 530 can also be provided in the box body 100. The third partition 530 is located between the first partition 510 and the second partition 520. The third partition 530 extends from the closed end of the box body 100 toward the open end and is close to the open end of the box body 100. The box body 100 is divided into a first cavity 200, a third cavity 400 and a second cavity 300 by the third partition 530 and the first partition 510, respectively. The third cavity 400 mainly plays the role of further filtering. The structure, function, etc. of the first cavity 200 and the second cavity 300 are the same as those in the aforementioned embodiment and will not be repeated here.
[0052] Optionally, a fourth partition 540 and a second filter assembly 410 are provided in the third cavity 400, the second filter assembly 410 is provided near the closed end of the third cavity 400, the fourth partition 540 extends from the open end of the third cavity 400 toward the closed end until it abuts against the second filter assembly 410, and the space surrounded by the first partition 510, the fourth partition 540, the second filter assembly 410 and the outer wall of the third cavity 400 forms a second filter cavity, and the second filter cavity and the second cavity 300 are connected through the water inlet pipe.
[0053] Optionally, multiple third cavities 400 are provided, and the multiple third cavities 400 are arranged in series, wherein the number of third cavities 400 can be adjusted according to actual filtering requirements, and the filtering degree of particulate matter can be effectively improved through multi-stage filtration.
[0054] It can be understood that when the box body 100 is provided with a first cavity 200, a second cavity 300 and a third cavity 400, the sewage to be treated enters the water inlet cavity through the first water inlet pipe 220, and the sewage in the water inlet cavity passes through the first filter assembly 210 from bottom to top for filtration. The liquid level of the filtered sewage in the first filter cavity gradually rises to be flush with the top of the third partition plate 530 and then enters the third cavity 400. The sewage in the third cavity 400 continues to pass through the second filter assembly 410 from bottom to top for filtration. The filtered sewage enters the second cavity 300 through the second water inlet pipe 310, and the sewage level steadily rises from the bottom of the second cavity 300. During the process of liquid level rising, a part of the sewage is filtered by the filter element 350 and then drawn out from the outlet pipe, and the remaining sewage overflows upward to submerge the top of the second overflow weir 320, and is then discharged to the overflow collection pipe 610 through the second overflow outlet pipe 330.
[0055] Optionally, the bottoms of the first cavity 200, the second cavity 300 and the third cavity 400 are all connected to the drainage main pipe 620 through a one-way valve 640, and the drainage main pipe 620 is provided with an electric ball valve 630, which can realize timed drainage, and when draining, the sewage in each cavity can use the liquid level difference to backwash the filter assembly to take away the precipitated particles; further, the overflow collection pipe 610 is connected to the drainage main pipe 620 and the connection is located at the rear end of the electric ball valve 630 to ensure that the sewage is circulated and filtered in the box 100 before being discharged.
[0056] Optionally, the first cavity 200, the second cavity 300 and the third cavity 400 are all conical in shape with a larger upper portion and a smaller lower portion, and may be in the shape of a cone, a face cone, etc., so as to facilitate the discharge of precipitated particles in the sewage.
[0057] Optional, such as Figure 7-8 As shown, the first filter assembly 210 and the second filter assembly 410 each include a filter plate 211, a support frame 212, and a mounting frame 213. One end of the mounting frame 213 is movably connected to the filter plate 211 through the support frame 212, and the other end is detachably mounted on the top of the box body 100. Specifically, the filter plate 211 can be connected to the support frame 212 by bolts. Two mounting frames 213 are provided and symmetrically mounted at both ends of the support frame 212. The ends of the two mounting frames 213 away from the filter plate 211 are bolted together by a support rod 214 to reinforce the filter assembly as a whole.
[0058] Optionally, the filter plate 211 and the mounting frame 213 are tilted, and the tilt angle is a and 10°≤a≤80°. Within the range of 10-80°, the angle between the filter plate 211 and the mounting frame 213 can be adjusted by bolts to adapt to different cavities; and the mounting frame 213 can be adjusted in length according to actual needs so that the filter assembly can be installed at different heights in each cavity; and the aperture of the filter plate 211 can be selected according to the sewage quality, and the sewage quality of the pipeline network can be adapted by freely combining filter plates 211 with different apertures.
[0059] To sum up, the device of the utility model can effectively precipitate and filter the sewage and wastewater monitoring inlet water, effectively solving the problems faced by water quality monitoring stations such as turbid sewage and wastewater inlet, excessive suspended solids, easy pipe clogging of monitoring machines, and unstable monitoring values. In addition, the device of the utility model has a compact structure, high reliability, strong applicability, and convenient maintenance, and is suitable for pre-filtration work of various sewage and wastewater online monitoring.
[0060] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and replacements can be made without departing from the technical principles of the present invention. These improvements and replacements should also be regarded as the scope of protection of the present invention.
Claims
1. A sewage pipe network pre-filter device, characterized in that: The box comprises a box body, wherein a first partition is provided in the box body, and the box body is divided into a first cavity and a second cavity which are independent of each other by the first partition; A second partition and a first filter assembly are provided in the first cavity, the first filter assembly is provided near the closed end of the first cavity, the second partition extends from the open end of the first cavity toward the closed end to abut against the first filter assembly, and a space surrounded by the first partition, the second partition, the first filter assembly and the outer wall of the first cavity forms a first filter cavity; The first filter cavity and the second cavity are connected through a water inlet pipe, one end of the water inlet pipe extends to the interior of the second cavity and is close to the closed end of the second cavity; at least one of the first cavity and the second cavity is provided with an overflow assembly.
2. The sewage pipe network pre-filter device according to claim 1, characterized in that: The space enclosed by the second partition, the first filter assembly, and the outer wall of the first cavity forms a water inlet cavity; the water inlet cavity is provided with a water inlet near the opening end of the first cavity, and a buffer and a first overflow assembly are provided at the bottom of the water inlet, and the buffer and the top of the first overflow assembly are flush.
3. The sewage pipe network pre-filter device according to claim 2, characterized in that: The first overflow assembly includes a first overflow weir and a first overflow outlet pipe. The first overflow weir is installed on the side wall of the water inlet chamber and the top of the first overflow weir is flush with the buffer member. The first overflow outlet pipe is arranged at one end near the bottom of the first overflow weir.
4. The sewage pipe network pre-filter device according to claim 3, characterized in that: A second overflow assembly is provided on one side of the interior of the second cavity, and the second overflow assembly includes a second overflow weir and a second overflow outlet pipe. The second overflow weir is installed on the side wall of the second cavity and close to the opening end of the second cavity, and the second overflow outlet pipe is connected to the bottom end close to the second overflow weir.
5. The sewage pipe network pre-filter device according to claim 4, characterized in that: Assuming that the distance between the top of the first overflow weir and the opening end of the box body is c, and the distance between the top of the second overflow weir and the opening end of the box body is d, then d≥c.
6. The sewage pipe network pre-filter device according to claim 1, characterized in that: A water outlet is provided in the middle of the side wall of the second cavity, and a filter is provided at the water outlet.
7. The sewage pipe network pre-filter device according to any one of claims 1 to 6, characterized in that: A third partition is provided in the box body, the third partition is located between the first partition and the second partition, the third partition extends from the closed end of the box body toward the open end and is close to the open end of the box body, and the box body is divided into a first cavity, a third cavity and a second cavity by the third partition and the first partition; A fourth partition and a second filter assembly are provided in the third cavity, the second filter assembly is provided near the closed end of the third cavity, the fourth partition extends from the open end of the third cavity toward the closed end to abut against the second filter assembly, and the space surrounded by the first partition, the fourth partition, the second filter assembly and the outer wall of the third cavity forms a second filter cavity, and the second filter cavity and the second cavity are connected through the water inlet pipe.
8. The sewage pipe network pre-filter device according to claim 7, characterized in that: There are multiple third cavities, and the multiple third cavities are arranged in series.
9. The sewage pipe network pre-filter device according to claim 7, characterized in that: The bottoms of the first cavity, the second cavity and the third cavity are all connected to the main drainage pipe through a one-way valve.
10. The sewage pipe network pre-filter device according to claim 7, characterized in that: The first filter assembly and the second filter assembly both include a filter plate, a support frame and a mounting frame. One end of the mounting frame is movably connected to the filter plate through the support frame, and the other end is detachably mounted on the top of the box.