Filtering device for sewage pretreatment

Abstract

The utility model discloses a filtering device for sewage pretreatment, and belongs to the technical field of sewage pretreatment, the filtering device comprises a tank body and a tank cover, the bottom of the tank body is connected with a water outlet pipe, the filtering device further comprises a flow dividing block, a driving part, a scraping plate and a filtering assembly, a water inlet pipe is formed on the tank cover, and a drainage pipe is mounted on one side of the tank cover; the filtering assembly is in transmission connection with the power output end of the driving part, and a flow dividing block and a scraping plate are arranged between the filtering assembly and the drainage pipe; a blow-off pipe is communicated with the position, corresponding to the scraper, of the side wall of the tank body, and the two ends of the scraper are detachably connected with the blow-off pipe and the flow dividing block respectively. The driving piece can drive the filtering assembly to rotate relative to the scraping plate, so that the scraping plate can push and scrape impurities accumulated on the surface of the filtering assembly, automatic cleaning of the impurities is achieved, the phenomenon that the filtering effect of the filtering assembly is affected due to impurity accumulation is avoided, operation is easy, time and labor are saved, the labor intensity of workers is effectively relieved, and the working efficiency is improved. And the cleaning and maintenance efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewage pretreatment technical field especially sewage pretreatment filter device. BACKGROUND

[0002] The centralized sewage treatment of industrial production enterprises or the decentralized sewage treatment of residential areas all need to pretreat the sewage, and the sewage pretreatment is an important step before the sewage enters the flocculation treatment, biological treatment or chemical treatment and other further sewage treatments, and if the sewage pretreatment is substandard, the subsequent treatment equipment, device or structure is prone to be greatly worn. Specifically, the sewage pretreatment generally includes solid-liquid separation, that is, the solid impurities in the sewage are filtered out first to reduce the wear of the subsequent sewage treatment equipment and improve the efficiency and effect of the subsequent sewage treatment.

[0003] The applicant discloses a filter device for sewage pretreatment in the patent with the publication number CN221385468U, which comprises a shell, a water inlet pipe, a shunt assembly and a filter assembly. A filter cavity is formed in the shell, and a water inlet and a water outlet are respectively formed at both ends of the shell; the water inlet pipe is installed in the water inlet; the shunt assembly comprises a mounting rod, a shunt block and a shunt plate, the mounting rod is installed on the shell, the mounting rod is connected with the shunt plate, the shunt block is installed on the side of the shunt plate away from the mounting rod, and the shunt block at least partially extends into the water inlet pipe; the radial dimension of the shunt block is smaller than the inner diameter dimension of the water inlet pipe, and the shunt block is used for uniformly shunting the sewage discharged through the water inlet pipe to the shunt plate; the filter assembly comprises a first filter screen and a second filter screen, the first filter screen is sleeved on the mounting rod, and the circumference of the first filter screen abuts against the inner wall of the shell, the second filter screen is formed in an annular shape, the second filter screen is sleeved outside the shunt plate, and the outer circumference of the first filter screen abuts against the inner wall of the shell.

[0004] As can be seen from the above patent, the filter device for sewage pretreatment can make the sewage pass through the second filter screen more uniformly through the shunt effect of the shunt plate, thereby effectively exerting the filtering function of the second filter screen to realize the rapid filtration of the sewage, and the first filter screen can realize the secondary filtration of the sewage, thereby effectively improving the filtration efficiency and effect. However, the applicant found in the use process that a large amount of impurities will accumulate on the first filter screen and the second filter screen after long-term operation of the equipment, thereby easily affecting the filtration effect of the first filter screen and the second filter screen on the sewage, and the staff needs to open the shell and manually clean the first filter screen and the second filter screen, which not only makes the operation troublesome, time-consuming and laborious, but also increases the labor intensity of the staff and reduces the cleaning and maintenance efficiency. Based on this, the applicant further improves and optimizes it. UTILITY MODEL CONTENTS

[0005] The utility model discloses a main purpose lies in providing a kind of filter device for sewage pretreatment, to solve the filter device for sewage pretreatment of existing need staff to carry out manual cleaning to first filter screen and second filter screen, not only operation is troublesome, time-consuming and laborious, also increase the labor intensity of staff, reduce the cleaning maintenance efficiency problem.

[0006] To achieve the above object, the utility model provides a kind of filter device for sewage pretreatment, including tank body and tank cover, the bottom of the tank body is connected with water outlet pipe, further include shunt block, driving element, scraper and filter assembly, the driving element is detachably installed on the tank cover, the tank cover is formed with the water inlet pipe being communicated with external water supply system, the side of the tank cover facing the tank body is detachably installed with drainage tube, the filter assembly is set below the drainage tube and is transmission connection with the power output end of the driving element, the filter assembly and the drainage tube between are provided with the shunt block and scraper, the shunt block is used to the sewage that is discharged via the drainage tube is evenly shunted to the filter assembly, the scraper is used to clean the impurity on the filter assembly;The position of the sidewall of the tank body corresponding the scraper is communicated with blow-off pipe, and the both ends of the scraper are detachably connected with the blow-off pipe and shunt block.

[0007] Preferably, the filter assembly includes a rotating shaft and a plurality of filter screens, one end of the rotating shaft passes through the drainage tube and is detachably connected with the power output end of the driving element, a plurality of filter screens are arranged on the rotating shaft, and above a plurality of filter screens are provided with a scraper.

[0008] Preferably, the side of the scraper facing the filter screen is provided with a guide groove, the groove wall of the guide groove is formed with a slope, and the slope bottom is arranged close to the blow-off pipe.

[0009] Preferably, the shunt block is provided with a notch groove, one end of the scraper is inserted into the notch groove and is detachably connected with the shunt block, and the shunt block is provided with a through hole for the rotating shaft to pass through, and the shunt block is arranged in a tapered manner from bottom to top.

[0010] Preferably, the end of the drainage tube away from the tank cover is arranged in a tapered manner from top to bottom.

[0011] Preferably, the water outlet pipe is provided with a flow sensor for monitoring the water flow of the tank body.

[0012] Preferably, the inner wall of the tank body is provided with an annular flange for abutting with the filter assembly; the outer wall of the tank body is uniformly and spacedly provided with a plurality of supporting legs along the circumference.

[0013] Beneficial effects:

[0014] 1. The utility model relates a filter device for sewage pretreatment can drive filter assembly relative scraper rotation by driving part, thereby make the scraper can push and scrape the impurity accumulated on the surface of filter assembly, thereby realize the automatic cleaning of impurity, not only avoid the influence of impurity accumulation on the filtering effect of filter assembly, but also simple operation, save time and effort, effectively reduce the labor intensity of staff, and improve the cleaning and maintenance efficiency.

[0015] 2. In the utility model discloses a filter device for sewage pretreatment, the side wall of the tank is communicated with the blowdown pipe at the position corresponding to the scraper, so that the impurities scraped off by the scraper can be automatically discharged outside the tank through the blowdown pipe, thereby effectively preventing the impurities from accumulating in the tank and blocking the filter assembly, thereby ensuring the continuous and efficient operation of the utility model, and ensuring the filtering efficiency and effect of the filter assembly, and prolonging the service life of the filter assembly. ACCURATE DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the embodiment or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.

[0017] Figure 1 is a structural schematic diagram of a filter device for sewage pretreatment according to an embodiment of the utility model at a first viewing angle;

[0018] Figure 2 is a structural schematic diagram of a filter device for sewage pretreatment according to an embodiment of the utility model at a second viewing angle;

[0019] Figure 3 is a front view of a filter device for sewage pretreatment according to an embodiment of the utility model;

[0020] Figure 4 is Figure 3 the cross-sectional view of A-A in the figure;

[0021] Figure 5 is an isometric section view of a filter device for sewage pretreatment according to an embodiment of the utility model;

[0022] Figure 6 is an installation schematic diagram of a flow dividing block and a scraper in a filter device for sewage pretreatment according to an embodiment of the utility model.

[0023] In the figure: 1 - tank body; 2 - tank cover; 3 - water outlet pipe; 4 - flow dividing block; 5 - driving member; 6 - scraper; 7 - water inlet pipe; 8 - drainage pipe; 9 - drain pipe; 10 - rotating shaft; 11 - filter screen; 12 - guide groove; 13 - slope; 14 - notched groove; 15 - flow sensor; 16 - annular flange; 17 - supporting leg. DETAILED DESCRIPTION

[0024] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the accompanying drawings for the embodiments of the present application to make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the accompanying drawings can be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without making creative efforts are within the scope of protection of the present application.

[0026] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, thus, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0027] In the description of the present application, it should be noted that, if the terms “center”, “upper”, “lower”, “left”, “right”, “vertical”, “horizontal”, “inner”, “outer” and the like indicate the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the present application is used, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, if the terms “first”, “second” and the like appear in the description of the present application, they are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0028] In addition, if the terms “horizontal”, “vertical” and the like appear in the description of the present application, they do not mean that the component must be absolutely horizontal or vertical, but can be slightly inclined. For example, “horizontal” only means that its direction is relatively more horizontal than “vertical”, and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0029] In the description of the present application, it also needs to be explained that, unless otherwise explicitly specified and limited, if the terms "arrange", "install", "connect", "connect" appear, it should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0030] Embodiment 1:

[0031] The utility model provides a filter device for sewage pretreatment.

[0032] In an embodiment of the utility model, a filter device for sewage pretreatment includes tank body 1 and tank cover 2, the bottom of tank body 1 is connected with water outlet pipe 3, still includes shunt block 4, driving element 5, scraper 6 and filter assembly, driving element 5 is detachably installed on tank cover 2, tank cover 2 is formed with water inlet pipe 7 that communicates with external water supply system, tank cover 2 detachably installs drain pipe 8 on the side facing tank body 1, filter assembly is set up below drain pipe 8 and is transmission connection with the power output end of driving element 5, shunt block 4 and scraper 6 are set up between filter assembly and drain pipe 8, shunt block 4 is used to the sewage that is discharged via drain pipe 8 is evenly shunted to filter assembly, and scraper 6 is used for cleaning the impurities on filter assembly, the position of tank body 1's side wall corresponding scraper 6 is communicated with blow-off pipe 9, and both ends of scraper 6 are detachably connected with blow-off pipe 9 and shunt block 4 respectively.

[0033] Specifically, as shown in Figures 1 to 6 In the filter device for sewage pretreatment of the utility model, tank body 1 is the main part of the whole device, which is mainly used for accommodating sewage and filter assembly and other structural components, and by installing tank cover 2 on the top of tank body 1, the inner cavity of tank body 1 can be closed and a stable filtering environment can be formed. At the same time, since the water inlet pipe 7 is formed on the tank cover 2, by connecting the water inlet pipe 7 with the external water supply system, the sewage can be automatically transported into the tank body 1. When the sewage enters the tank body 1, the particles, impurities and other substances in the sewage can be screened and filtered out by the filter assembly. The filtered sewage is discharged from the water outlet pipe 3 at the bottom of the tank body 1, thereby realizing the pretreatment and filtration of the sewage, reducing the loss of subsequent sewage treatment equipment and improving the efficiency and effect of subsequent sewage treatment. It is worth noting that, since the shunt block 4 is arranged between the filter assembly and the drain pipe 8, the sewage discharged through the drain pipe 8 can be evenly shunted to the filter assembly through the shunt block 4, thereby ensuring that the sewage can pass through the filter assembly uniformly and sufficiently, and improving the filtering effect and reliability.

[0034] Further, since the driving member 5 is detachably mounted on the tank cover 2, and the filter assembly is arranged in transmission connection with the power output end of the driving member 5, wherein the driving member 5 can adopt the motor in the prior art, so that the filter assembly can rotate relative to the tank body 1 under the action of the driving member 5, the structure design is simple and reasonable; at the same time, since the scraper 6 is further arranged between the filter assembly and the drainage pipe 8, and the two ends of the scraper 6 are detachably connected with the blowdown pipe 9 and the flow divider 4, the detachable connection between the scraper 6 and the blowdown pipe 9 and the flow divider 4 can adopt threaded connection, thereby facilitating the disassembly and cleaning of the scraper 6, which is beneficial to maintenance. When it is necessary to clean the filter assembly, the driving member 5 can drive the filter assembly to rotate relative to the scraper 6, so that the scraper 6 can push and scrape the impurities accumulated on the surface of the filter assembly, thereby realizing automatic cleaning of the impurities, which not only avoids the accumulation of impurities affecting the filtering effect of the filter assembly, but also is simple and time-saving and labor-saving, effectively reducing the labor intensity of the workers, and improving the cleaning and maintenance efficiency.

[0035] Understandably, since the side wall of the tank body 1 is communicated with the blowdown pipe 9 at the position corresponding to the scraper 6, the impurities scraped off by the scraper 6 can be automatically discharged out of the tank body 1 through the blowdown pipe 9, thereby effectively preventing the impurities from accumulating in the tank body 1 to block the filter assembly, thereby not only ensuring the continuous and efficient operation of the utility model, but also ensuring the filtering efficiency and effect of the filter assembly, and prolonging the service life of the filter assembly.

[0036] In an embodiment, the filter assembly comprises a rotating shaft 10 and a plurality of filter screens 11, one end of the rotating shaft 10 penetrates the drainage pipe 8 and is detachably connected with the power output end of the driving member 5, and the plurality of filter screens 11 are arranged on the rotating shaft 10 in a spaced manner, and each of the plurality of filter screens 11 is provided with a scraper 6 above. Specifically, as shown in Figures 1 to 5 the filter assembly, the detachable connection between the rotating shaft 10 and the power output end of the driving member 5 can adopt threaded connection, so that not only the driving member 5 or the rotating shaft 10 can be easily disassembled and maintained, but also the rotating shaft 10 and the plurality of filter screens 11 on the rotating shaft 10 can rotate relative to the scraper 6, and the structure design is simple and reasonable. Further, by arranging the plurality of filter screens 11 on the rotating shaft 10 in a spaced manner, the multi-stage filtering treatment of sewage can be realized, thereby improving the filtering efficiency and effect of the sewage. Understandably, by arranging the scraper 6 above each of the plurality of filter screens 11, and the side wall of the tank body 1 is communicated with the blowdown pipe 9 at the position corresponding to each scraper 6, when the plurality of filter screens 11 rotate under the action of the rotating shaft 10 and the driving member 5, at this time, each scraper 6 can scrape off the impurities accumulated on the filter screen 11, and automatically discharge the impurities out of the tank body 1 through the blowdown pipe 9, without the need for manual cleaning of the impurities by the workers, thereby improving the cleaning and maintenance efficiency.

[0037] In an embodiment, the guiding groove 12 is formed on the side of the scraper 6 facing the filter screen plate 11, and a slope 13 is formed on the groove wall of the guiding groove 12, and the slope bottom of the slope 13 is arranged close to the drain pipe 9. Specifically, as shown in Figures 3 to 6 , the guiding groove 12 can provide a clear discharge path for the impurities when the scraper 6 scrapes the impurities, thereby ensuring the scraping effect of the impurities. Further, since the slope 13 is formed on the groove wall of the guiding groove 12, and the slope bottom of the slope 13 is arranged close to the drain pipe 9, the impurities can be smoothly guided to the drain pipe 9, thereby avoiding the accumulation and blockage of the impurities, and improving the cleaning efficiency.

[0038] In an embodiment, the shunt block 4 is provided with a notch groove 14, one end of the scraper 6 extends into the notch groove 14 and is detachably connected with the shunt block 4, and the shunt block 4 is provided with a through hole through which the rotating shaft 10 passes, and the shunt block 4 is arranged in a tapered manner from bottom to top. Specifically, as shown in Figures 3 to 6 , the notch groove 14 is formed on the shunt block 4, so that the scraper 6 can be stably and detachably connected with the shunt block 4, thereby ensuring the installation stability of the shunt block 4, and the detachable connection between the shunt block 4 and the scraper 6 can be achieved by screw connection, thereby facilitating the disassembly and assembly of the shunt block 4 or the scraper 6, and facilitating maintenance. Further, the through hole is formed on the shunt block 4, and the position and size of the through hole are matched with the rotating shaft 10, so as to ensure that the rotating shaft 10 can smoothly pass through the shunt block 4 and drive the plurality of filter screen plates 11 to rotate relative to the scraper 6, and the structure design is simple and reasonable. Understandably, the shunt block 4 is arranged in a tapered manner from bottom to top, so that the sewage can be uniformly distributed on the filter screen plate 11 when flowing through the shunt block 4, thereby improving the filtering effect and efficiency of the filter screen plate 11; at the same time, the tapered shunt block 4 is also conducive to reducing the flow rate of the sewage, buffering the sewage, thereby reducing the impact of the sewage on the filter screen plate 11, and prolonging the service life of the filter screen plate 11.

[0039] In an embodiment, the end of the drainage pipe 8 away from the tank cover 2 is arranged in a gradually expanding manner from top to bottom. Specifically, as shown in Figure 1 and Figure 4 , the end of the drainage pipe 8 away from the tank cover 2 (i.e. the water outlet end) is gradually expanded from top to bottom, so that the sewage can be gradually dispersed when flowing out of the drainage pipe 8, which is conducive to reducing the turbulence and vortex of the sewage, improving the flow stability of the sewage, and facilitating the subsequent uniform distribution of the sewage by the shunt block 4 and improving the filtering treatment of the filter screen plate 11.

[0040] In an embodiment, as shown in Figure 1 , Figure 2 and Figure 4As shown, the water outlet pipe 3 is provided with a flow sensor 15 for monitoring the water flow of the tank 1. It is worth noting that the filter device for sewage pretreatment also comprises a control system, which is in communication connection with the driving part 5 and the flow sensor 15, and the driving part 5 can be controlled to run to automatically clean the impurities of the filter screen plate 11 through the control system, and the structure design is simple and reasonable. At the same time, the water flow of the water outlet pipe 3 can be monitored in real time through the flow sensor 15, and it can be understood that if the water flow of the water outlet pipe 3 is small, it means that the sewage flowing through the filter screen plate 11 is less, and at this time the control system determines that the filter screen plate 11 is in a state of blockage, so as to control the driving part 5 to run to automatically clean the impurities. On the contrary, if the water flow of the water outlet pipe 3 is within the preset range, it means that the filter screen plate 11 is in a normal filtering state (i.e. no blockage occurs), and at this time the driving part 5 does not need to run. Therefore, the control system can determine whether the filter screen plate 11 is blocked or not through the flow sensor 15, and the driving part 5 is controlled to run to realize the automatic cleaning and dredging of the filter screen plate 11, thereby improving the intelligence and automation of the utility model, and the use is convenient and reliable. In addition, it is worth noting that the communication connection mode between the control system, the flow sensor 15, the driving part 5 and their respective parts is a mature prior art, which will not be described here.

[0041] In an embodiment, an annular flange 16 for abutting with the filter assembly is arranged on the inner wall of the tank 1, and a plurality of support legs 17 are uniformly and spacedly arranged on the outer wall of the tank 1 along the circumference thereof. Specifically, as shown in Figure 1 and Figure 5 By arranging the annular flange 16 for abutting with the filter assembly on the inner wall of the tank 1, the stability of the filter assembly during rotation can be improved, and the overall structural strength is improved. Further, by arranging the plurality of support legs 17 on the outer wall of the tank 1, the tank 1 can be supported at multiple points, and the placement stability and stability of the tank 1 are improved.

[0042] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A filtering device for sewage pretreatment, comprising a tank body (1) and a tank cover (2), a water outlet pipe (3) being connected to the bottom of the tank body (1), characterized in that, The sewage tank also comprises a shunt block (4), a driving member (5), a scraper (6) and a filter assembly, the driving member (5) is detachably mounted on the tank cover (2), a water inlet pipe (7) communicating with an external water supply system is formed on the tank cover (2), a drainage pipe (8) is detachably mounted on the side of the tank cover (2) facing the tank body (1), the filter assembly is arranged below the drainage pipe (8) and is in transmission connection with the power output end of the driving member (5), the shunt block (4) and the scraper (6) are arranged between the filter assembly and the drainage pipe (8), the shunt block (4) is used for uniformly shunting the sewage discharged through the drainage pipe (8) to the filter assembly, and the scraper (6) is used for cleaning impurities on the filter assembly; a sewage discharge pipe (9) is in communication with the position of the tank body (1) corresponding to the scraper (6), and the two ends of the scraper (6) are detachably connected with the sewage discharge pipe (9) and the shunt block (4) respectively.

2. The filtering device for sewage pretreatment according to claim 1, characterized in that, The filter assembly comprises a rotating shaft (10) and a plurality of filter screens (11), one end of the rotating shaft (10) penetrates through the drainage pipe (8) and is detachably connected with the power output end of the driving member (5), and a plurality of the filter screens (11) are arranged on the rotating shaft (10) at intervals, and above each of the filter screens (11), one scraper (6) is arranged.

3. The filter device for sewage pretreatment according to claim 2, characterized in that, The side of the scraper (6) facing the filter screen (11) is provided with a guide groove (12), the groove wall of the guide groove (12) is formed with a slope (13), and the slope bottom of the slope (13) is arranged close to the sewage discharge pipe (9).

4. The filter device for sewage pretreatment according to claim 3, characterized in that, The shunt block (4) is provided with a notch groove (14), one end of the scraper (6) extends into the notch groove (14) and is detachably connected with the shunt block (4), and the shunt block (4) is provided with a through hole through which the rotating shaft (10) penetrates, and the shunt block (4) is arranged in a tapered manner from bottom to top.

5. The filter device for sewage pretreatment according to claim 4, characterized in that, The end of the drainage pipe (8) away from the tank cover (2) is arranged in a tapered manner from top to bottom.

6. The filtering device for sewage pretreatment according to any one of claims 1-5, characterized in that, The water outlet pipe (3) is provided with a flow sensor (15) for monitoring the water outlet flow of the tank body (1).

7. The filter device for sewage pretreatment according to any one of claims 1 to 5, characterized in that, An annular flange (16) for abutting against the filter assembly is arranged on the inner wall of the tank body (1); a plurality of support legs (17) are uniformly and intermittently arranged on the outer wall of the tank body (1) along the circumferential direction.

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