Pretreatment device of wastewater pool

Abstract

The utility model relates to the technical field of wastewater treatment, in particular to a pretreatment device of a wastewater pool, which comprises a water storage tank, a cover plate, a dredge pipe and a filter frame, the cover plate is slidably arranged on the water storage tank, the dredge pipe penetrates through the lower part of one side of the water storage tank, a ball valve is mounted on the dredge pipe, and the filter frame is mounted at one end of the dredge pipe positioned in the water storage tank. Sewage is preliminarily filtered through the filter element and then enters the water storage tank to be suspended and precipitated, a first butterfly valve corresponding to one cavity of the water inlet tank is closed, so that a pressure difference is formed between the two cavities in the water inlet tank, and large-particle substances attached to the filter element in the cavity are reversely flushed out under the action of impact force of water; and then a second butterfly valve corresponding to the cavity is opened to discharge sewage and large-particle substances, so that the purpose of conveniently cleaning the filter element is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater treatment, in particular to a pretreatment device for a wastewater tank. Background Art

[0002] The pretreatment device for a wastewater tank is to comprehensively and preliminarily treat the wastewater before it enters the subsequent treatment system, so as to remove impurities such as large particulate matter, suspended matter, and grease, and reduce the burden on the subsequent treatment system.

[0003] The patent with the authorization announcement number CN218248981U discloses a pretreatment tank for papermaking wastewater, including a tank body and multiple sets of filter cartridges. The tank body includes a first water tank, a second water tank, and a third water tank. An inlet pipe is provided at the front end of the first water tank, and an outlet dark pipe is provided at the bottom of the second water tank. This patent proposes to deposit and accumulate large particulate solid impurities through the first water tank, so as to separate the large particulate solid impurities in the wastewater and prevent the large particulate solid impurities in the papermaking wastewater from depositing and accumulating in the papermaking wastewater treatment system. However, there are still some problems in the use of this patent. After the large particulate solid impurities are deposited in the first water tank, the first water tank and the filter cartridges are easily blocked by the large particulate solid impurities, and then the sewage treatment work needs to be stopped, and then the first water tank and the filter cartridges are cleaned manually, which affects the progress of the wastewater treatment process.

[0004] Therefore, it is necessary to design a pretreatment device for a wastewater tank that is convenient for cleaning the filter element. Summary of the Utility Model

[0005] In order to overcome the defect that after the large particulate solid impurities are deposited in the first water tank in the existing patent, the first water tank and the filter cartridges are easily blocked by the large particulate solid impurities, and then the sewage treatment work needs to be stopped, and then the first water tank and the filter cartridges are cleaned manually, which affects the progress of the wastewater treatment process, the utility model provides a pretreatment device for a wastewater tank that is convenient for cleaning the filter element.

[0006] Technical solution: A pretreatment device for a wastewater tank, comprising a water storage tank, a cover plate, a drain pipe, and a filter frame. A cover plate is slidably arranged on the water storage tank. A drain pipe is penetrated through the lower part of one side of the water storage tank, and a ball valve is installed on the drain pipe. A filter frame is installed at one end of the drain pipe located inside the water storage tank. It further comprises a support rod, a water inlet tank, a water inlet pipe, a connecting pipe, a first butterfly valve, a filter element, a diversion pipe, a water outlet pipe, a confluence pipe, a sewage pipe, a sealing cover, a partition board, and a second butterfly valve. A support rod is fixedly connected to the cover plate, and a water inlet tank is installed on the support rod. A partition board is installed inside the water inlet tank, and the inner part of the water inlet tank is divided into two chambers by the partition board. Two water inlet pipes are connected and communicated at the top of the water inlet tank, and the ends of the two water inlet pipes are connected and communicated with a connecting pipe. A first butterfly valve is installed on the water inlet pipe. A filter element penetrates through the lower part of the water inlet tank, and the filter element penetrates through the partition board. Both ends of the filter element are connected and communicated with a diversion pipe penetrating through the cover plate. Two water outlet pipes are connected and communicated at the bottom of the water inlet tank, and a second butterfly valve is installed on the water outlet pipe. The ends of the water outlet pipes are connected and communicated with a confluence pipe. A sewage pipe is connected and communicated on one side of the water inlet tank, and a sealing cover is covered on the sewage pipe.

[0007] Furthermore, it further comprises a motor, a fixing plate, a connecting shaft, a first bevel gear, a second bevel gear, a rotating shaft, and a scraping plate. A fixing plate is installed on the cover plate, and a motor is installed on the fixing plate. The output shaft of the motor is connected with a connecting shaft through a coupling, and the connecting shaft is rotatably connected to the lower part of the fixing plate. A rotating shaft is rotatably arranged at the lower part of the fixing plate. A scraping plate is fixedly connected to one end of the rotating shaft close to the filter frame, and the scraping plate contacts the filter frame. A second bevel gear is fixedly connected to one end of the rotating shaft close to the connecting shaft, and a first bevel gear is fixedly connected to the lower end of the connecting shaft. The first bevel gear and the second bevel gear are meshed and driven.

[0008] Furthermore, it further comprises a mounting plate, an air pump, and an air guide pipe. A mounting plate is installed on one side of the water storage tank, and an air pump is installed on the mounting plate. The output end of the air pump is connected and communicated with an air guide pipe, and the air pump penetrates through the cover plate and extends to the lower part inside the water storage tank.

[0009] Furthermore, it further comprises a buffer plate. A buffer plate is installed at the inner bottom of the water storage tank, and a plurality of grooves with a trapezoidal cross-section are formed on the buffer plate.

[0010] Furthermore, it further comprises a pull rod. Pull rods are installed on both sides of the water storage tank.

[0011] Furthermore, it further comprises an assembly plate. Assembly plates are installed on both sides of the bottom of the water storage tank, and a plurality of mounting holes are formed on the assembly plates.

[0012] Compared with the prior art, the beneficial effects of the present utility model are:

[0013] 1. The sewage is preliminarily filtered through a filter element and then enters the inside of the water storage tank for hovering and sedimentation. By closing the first butterfly valve corresponding to one of the chambers of the water inlet tank, a pressure difference is formed between the two chambers inside the water inlet tank. Under the impact of water, the large particulate matter attached to the filter element in this chamber is flushed out in the reverse direction, and then the second butterfly valve corresponding to this chamber is opened to discharge the sewage and large particulate matter, thus achieving the purpose of facilitating the cleaning of the filter element.

[0014] 2. By starting the motor, the rotating shaft drives the scraper to rotate, scraping off the silt and impurities blocked on the filter frame, thereby preventing the drainage pipe from being blocked when draining sewage.

[0015] 3. By starting the air pump, a large number of bubbles are formed inside the water storage tank, enabling the flocculant to fully combine with the suspended substances in the water and quickly aggregating the suspended substances in the sewage, thus facilitating the centralized treatment of the suspended substances in the sewage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the present utility model.

[0017] Figure 2 It is a three-dimensional sectional structural schematic diagram of the water inlet tank, water inlet pipe and partition of the present utility model.

[0018] Figure 3 It is a three-dimensional sectional structural schematic diagram of the water inlet tank, filter element and water outlet pipe of the present utility model.

[0019] Figure 4 It is a three-dimensional sectional structural schematic diagram of the water storage tank, cover plate and motor of the present utility model.

[0020] Figure 5 It is a three-dimensional structural schematic diagram of the motor, bevel gear and scraper of the present utility model.

[0021] Figure 6 It is a three-dimensional sectional structural schematic diagram of the water storage tank, air pump and air duct of the present utility model.

[0022] Names and serial numbers of components in the figure: 1 - water storage tank, 2 - cover plate, 3 - support rod, 301 - water inlet tank, 302 - water inlet pipe, 303 - connecting pipe, 304 - first butterfly valve, 305 - filter element, 306 - diversion pipe, 307 - water outlet pipe, 308 - confluence pipe, 309 - sewage discharge pipe, 310 - sealing cover, 4 - drainage pipe, 5 - filter frame, 6 - motor, 7 - fixing plate, 701 - connecting shaft, 8 - first bevel gear, 9 - second bevel gear, 901 - rotating shaft, 10 - scraper, 11 - mounting plate, 12 - air pump, 13 - air duct, 14 - partition, 15 - second butterfly valve, 16 - buffer plate, 17 - pull rod, 18 - assembly plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The preferred technical solutions of the present utility model will be described in detail below with reference to the accompanying drawings.

[0024] Embodiment 1: A pretreatment device for a wastewater tank, as shown in Figures 1 - 3 Figure [not provided], which includes a water storage tank 1, a cover plate 2, a drainage pipe 4, and a filter frame 5. A cover plate 2 is slidably arranged on the water storage tank 1. On both sides of the water storage tank 1, pull rods 17 are installed by means of bolt connection. By gripping the pull rods 17 and lifting upwards, it is convenient to move the water storage tank 1. On both sides of the bottom of the water storage tank 1, assembly plates 18 are installed by means of bolt connection. Two mounting holes are provided on the assembly plates 18. By inserting screws into the mounting holes on the assembly plates 18, it is convenient to quickly fix the water storage tank 1. A buffer plate 16 is installed at the inner bottom of the water storage tank 1 by means of bolt connection. A plurality of grooves with a trapezoidal cross-section are provided on the buffer plate 16. After the sewage enters the water storage tank 1, the silt and impurities settle in the grooves of the buffer plate 16 under the action of gravity. When the sewage continues to be discharged into the water storage tank 1, the buffer plate 16 can resist the impact of the water flow and prevent the silt and impurities at the bottom from rising and falling in the water storage tank 1 due to the action of the water flow. A drainage pipe 4 penetrates through the lower left part of the water storage tank 1. A ball valve is installed on the drainage pipe 4. One end of the drainage pipe 4 located inside the water storage tank 1 is installed with a filter frame 5 by means of bolt connection. It also includes a support rod 3, a water inlet tank 301, a water inlet pipe 302, a connecting pipe 303, a first butterfly valve 304, a filter element 305, a diversion pipe 306, a water outlet pipe 307, a confluence pipe 308, a sewage discharge pipe 309, a sealing cover 310, a partition plate 14, and a second butterfly valve 15. A support rod 3 is fixedly connected to the cover plate 2 by welding. A water inlet tank 301 is installed on the support rod 3 by means of bolt connection. A partition plate 14 is installed inside the water inlet tank 301, and the inner part of the water inlet tank 301 is divided into two front and rear chambers by the partition plate 14. Two water inlet pipes 302 are connected and communicated with the top of the water inlet tank 301. The two water inlet pipes 302 are respectively communicated with the two front and rear chambers of the water inlet tank 301. The ends of the two water inlet pipes 302 are connected and communicated with a connecting pipe 303. A first butterfly valve 304 is installed on the water inlet pipe 302. A filter element 305 penetrates through the lower part of the water inlet tank 301. The filter element 305 penetrates through the partition plate 14. The front and rear ends of the filter element 305 are respectively connected and communicated with a diversion pipe 306 that penetrates through the cover plate 2. Two water outlet pipes 307 are connected and communicated with the bottom of the water inlet tank 301. The two water outlet pipes 307 are respectively communicated with the two front and rear chambers of the water inlet tank 301. A second butterfly valve 15 is installed on the water outlet pipe 307. The end of the water outlet pipe 307 is connected and communicated with a confluence pipe 308. A sewage discharge pipe 309 is connected and communicated with the left side of the water inlet tank 30. A sealing cover 310 is covered on the sewage discharge pipe 309.

[0025] When pretreatment of sewage is required, initially, the first butterfly valve 304 is in the open state and the second butterfly valve 15 is in the closed state. Subsequently, the sewage drain pipe is connected to the connecting pipe 303, and sewage enters the inlet water tank 301 through the connecting pipe 303 and the inlet pipe 302. The sewage accumulates in the inlet water tank 301, increasing the pressure inside the inlet water tank 301. Under the action of the pressure, the sewage seeps into the filter element 305, and the filter element 305 preliminarily filters the sewage to remove large particulate matter in the sewage. The preliminarily filtered sewage enters the storage water tank 1 through the diversion pipe 306. When it is necessary to clean the filter element 305 in the front chamber of the inlet water tank 301, the first butterfly valve 304 on the connecting pipe 303 communicating with the front chamber of the inlet water tank 301 is closed. At this time, a pressure difference is formed between the two chambers inside the inlet water tank 301, and water seeps into the front chamber of the inlet water tank 301 through the front filter element 305. At the same time, under the impact of the water, the large particulate matter attached to the front filter element 305 is flushed out in the reverse direction. Then, the second butterfly valve 15 on the outlet pipe 307 communicating with the front chamber of the inlet water tank 301 is opened, so that the sewage and large particulate matter are discharged through the outlet pipe 307 and the confluence pipe 308, thereby achieving the purpose of facilitating the cleaning of the filter element 305. Then, the first butterfly valve 304 and the second butterfly valve 15 corresponding to the front chamber of the inlet water tank 301 are closed. When it is necessary to clean the filter element 305 in the rear chamber of the inlet water tank 301, repeat the above operation to open and close the first butterfly valve 304 and the second butterfly valve 15 corresponding to the rear chamber of the inlet water tank 301. By opening the sealing covers 310 corresponding to the front and rear chambers of the inlet water tank 301, it is convenient to thoroughly clean the large particulate matter in the front and rear chambers of the inlet water tank 301. The preliminarily filtered sewage enters the interior of the storage water tank 1, and the sewage hovers and precipitates in the storage water tank 1, and the remaining large particulate matter further deposits at the bottom of the storage water tank 1.

[0026] Example 2: On the basis of Example 1, refer to Figure 4 and Figure 5 As shown, a fixing plate 7 is installed on the cover plate 2 by means of bolt connection. A motor 6 is installed on the fixing plate 7 by means of bolt connection. A connecting shaft 701 is connected to the output shaft of the motor 6 through a coupling. The connecting shaft 701 is rotatably connected to the lower part of the fixing plate 7. A rotating shaft 901 is rotatably arranged at the lower part of the fixing plate 7. A scraping plate 10 is fixedly connected to one end of the rotating shaft 901 close to the filter frame 5. The scraping plate 10 contacts the filter frame 5. A second bevel gear 9 is fixedly connected to one end of the rotating shaft 901 close to the connecting shaft 701. A first bevel gear 8 is fixedly connected to the lower end of the connecting shaft 701. The first bevel gear 8 is meshed with the second bevel gear 9 for transmission.

[0027] When it is necessary to further process the water in the water storage tank 1, first start the motor 6. The output shaft of the motor 6 drives the connecting shaft 701 to rotate. The connecting shaft 701 drives the rotating shaft 901 to rotate through the first bevel gear 8 and the second bevel gear 9. The rotating shaft 901 drives the scraper 10 to rotate. Rotate the ball valve to discharge the pretreated sewage through the drainage pipe 4. The filter frame 5 filters the discharged sewage to prevent large-volume waste in the wastewater from blocking the ball valve. At the same time, the scraper 10 rotates to remove the blockage on the filter frame 5, thereby preventing the drainage pipe 4 from being blocked during sewage drainage.

[0028] Refer to Figure 6 As shown, it further includes a mounting plate 11, an air pump 12 and an air duct 13. The mounting plate 11 is installed on the front side of the water storage tank 1 by means of bolt connection. The air pump 12 is installed on the mounting plate 11 by means of bolt connection. The output end of the air pump 12 is connected and communicated with the air duct 13. The air pump 12 penetrates through the cover plate 2 and extends to the lower part inside the water storage tank 1.

[0029] After the sewage is introduced into the water storage tank 1 through the notch groove of the cover plate 2, a flocculant is added to the sewage, and then the air pump 12 is started. The air pump 12 inhales air and passes it into the water storage tank 1 through the air duct 13. A large number of bubbles are formed in the water storage tank 1, so that the flocculant can fully combine with the suspended substances in the water, quickly gather the suspended substances in the sewage, and thus facilitate the centralized treatment of the suspended substances in the sewage.

[0030] The above embodiments are only the preferred embodiments of the present invention and are not used to limit the scope of implementation of the present invention. Therefore, all equivalent changes made according to the content described in the claims of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A pretreatment device for a wastewater pool, comprising a water storage tank (1), a cover plate (2), a drainage conduit (4) and a filter frame (5), wherein the water storage tank (1) is slidably provided with a cover plate (2), a drainage conduit (4) is penetrated through a lower part of one side of the water storage tank (1), a ball valve is installed on the drainage conduit (4), and a filter frame (5) is installed at one end of the drainage conduit (4) located inside the water storage tank (1), wherein the filter frame (5) is characterized in that: It also includes a support rod (3), a water inlet box (301), a water inlet pipe (302), a connecting pipe (303), a first butterfly valve (304), a filter element (305), a flow guide pipe (306), a water outlet pipe (307), a confluence pipe (308), a sewage pipe (309), a sealing cover (310), a partition (14) and a second butterfly valve (15). The cover plate (2) is fixedly connected to the support rod (3), the support rod (3) is mounted on the support rod (3), the water inlet box (301) is mounted inside the water inlet box (301), and the partition (14) divides the inside of the water inlet box (301) into two chambers. Two water inlet pipes (302) are connected and connected to the top of the water inlet box (301). The two water inlet pipes (310) are connected to the top of the water inlet box (301). 02) is connected to and communicated with a connecting pipe (303), a first butterfly valve (304) is installed on the water inlet pipe (302), a filter element (305) is passed through the lower part of the water inlet tank (301), the filter element (305) passes through the partition plate (14), both ends of the filter element (305) are connected to and communicated with a guide pipe (306) passing through the cover plate (2), the bottom of the water inlet tank (301) is connected to and communicated with two water outlet pipes (307), a second butterfly valve (15) is installed on the water outlet pipes (307), the ends of the water outlet pipes (307) are connected to and communicated with a confluence pipe (308), one side of the water inlet tank (301) is connected to and communicated with a sewage pipe (309), and the sewage pipe (309) is covered with a sealing cover (310).

2. A wastewater pool pretreatment device as claimed in claim 1, characterized in that: The invention also comprises a motor (6), a fixing plate (7), a connecting shaft (701), a first bevel gear (8), a second bevel gear (9), a rotating shaft (901) and a scraper (10); the fixing plate (7) is mounted on the cover plate (2); the fixing plate (7) is mounted on the motor (6); the output shaft of the motor (6) is connected to the connecting shaft (701) via a coupling; the connecting shaft (701) is rotatably connected to the lower part of the fixing plate (7); the lower part of the fixing plate (7) is rotatably provided with a rotating shaft (901); the end of the rotating shaft (901) close to the filter frame (5) is fixedly connected to the scraper (10); the scraper (10) is in contact with the filter frame (5); the end of the rotating shaft (901) close to the connecting shaft (701) is fixedly connected to the second bevel gear (9); the lower end of the connecting shaft (701) is fixedly connected to the first bevel gear (8); the first bevel gear (8) and the second bevel gear (9) are meshed and driven.

3. A wastewater pool pretreatment device as claimed in claim 2, characterized in that: The invention also comprises a mounting plate (11), an air pump (12) and an air guide pipe (13); the mounting plate (11) is mounted on one side of the water storage tank (1); the air pump (12) is mounted on the mounting plate (11); the output end of the air pump (12) is connected to and communicates with the air guide pipe (13); the air pump (12) passes through the cover plate (2) and extends to the lower part of the water storage tank (1).

4. A wastewater pool pretreatment device as claimed in claim 3, characterized in that: It also includes a buffer plate (16), which is installed on the bottom of the water storage tank (1), and has a plurality of grooves with trapezoidal cross sections.

5. A wastewater pool pretreatment device as claimed in claim 4, characterized in that: It also includes a pull rod (17), and the pull rod (17) is installed on both sides of the water storage tank (1).

6. A wastewater pool pretreatment device as claimed in claim 5, characterized in that: It also includes an assembly plate (18), which is installed on both sides of the bottom of the water storage tank (1), and a plurality of installation holes are provided on the assembly plate (18).

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