Integrated water purifying device
By designing an integrated water purification device that combines mechanical mixing, flocculation, sedimentation, and filtration units, the problems of large footprint and poor purification effect in water purification plants have been solved, achieving efficient space saving and improved water quality.
Patent Information
- Application Number
- CN202520317607.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-02-26
AI Technical Summary
Existing water purification plants occupy a large area, especially in mountainous areas where land is scarce. The layout of conventional water purification structures is limited, and the purification effect is not good.
Design an integrated water purification device comprising a mechanical mixing tank, a flocculation tank, a sedimentation tank, and a filter tank. Through an integrated water purification unit that combines mechanical mixing, flocculation, sedimentation, and filtration, and combined with micro-vortex flocculation balls, spiral inclined plates, and quartz sand filtration, mud-water separation and deep purification are achieved.
It greatly saves floor space, improves water purification effect, adapts to changes in raw water volume and quality, avoids the dead water zone of conventional inclined tube sedimentation tanks, and produces excellent effluent quality.
Smart Images
Figure CN223879589U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of water treatment equipment, in particular to an integrated water purification device. BACKGROUND
[0002] At present, the popularization rate of tap water is gradually rising, and the water purification plant using the conventional water purification process includes mixing, flocculation, sedimentation, filtration and other water purification units. Each water purification unit needs to be provided with corresponding structures and auxiliary equipment, and the construction space, safety distance and maintenance space need to be ensured between the structures, thereby resulting in that the overall land occupation of the water purification unit of the water plant is large. Especially in the mountainous area and other occasions where the land is tight, the arrangement of the conventional concrete water purification structure is particularly limited, and a water purification device with small land occupation and good purification effect is urgently needed. CONTENT OF THE UTILITY MODEL
[0003] In order to solve the above problems existing in the prior art, the present application provides an integrated water purification device, which has good water purification effect and is highly integrated, covering mixing, flocculation, sedimentation and filtration water purification units, greatly saving the land occupation problem of the water purification unit of the water plant, and using the mainstream water purification process, the water outlet effect is good.
[0004] The technical scheme of the present application: an integrated water purification device, comprising a water inlet pipe, a shell, a water outlet pipe, a sludge discharge pipe, a backwashing water pipe and a drain pipe, the shell is divided into a mechanical mixing tank provided with a mixing agitator, a flocculation tank provided with a micro-vortex flocculation ball, a sedimentation tank provided with a spiral inclined plate and a water collecting tank, and a filter tank provided with quartz sand and a sand washing drain tank by a partition plate in sequence. The raw water in the mechanical mixing tank flows to the flocculation tank through the upper mixing tank water outlet, the water in the flocculation tank flows to the sedimentation tank through the flocculation tank outlet at the bottom of the flocculation tank, the water in the sedimentation tank is collected through the perforated water collecting tank in the sedimentation tank, and then flows to the filter tank through the sedimentation tank outlet, and the water in the filter tank flows out through the water outlet pipe at the bottom of the filter tank.
[0005] Preferably, before the raw water of the device flows into the shell through the water inlet pipe, the raw water first passes through the alum addition short pipe and the pre-chlorine short pipe on the water inlet pipe for the addition of flocculants and the addition of pre-oxidants. The raw water then enters the mechanical mixing tank, mixes the flocculants and the pre-oxidants with the raw water in the mechanical mixing tank, and then flows into the flocculation tank. The flocculation tank is provided with a micro-vortex flocculation ball. The alum flocculation body is changed from small to large by the action of the micro-vortex flocculation ball. Then the alum flocculation body reaches the flocculation tank outlet (the same as the sedimentation tank inlet) through the bottom of the flocculation tank. The water gradually rises after reaching the bottom of the sedimentation tank. The effect of mud-water separation is realized by the action of the spiral inclined plate in the rising process. The alum flocculation body slides along the spiral inclined plate to the bottom of the sedimentation tank. The upper clear water reaches the sedimentation tank outlet through the perforated water collecting tank, and then reaches the upper layer of the filter tank. Then the quartz sand is used to purify the water in a deeper way. Finally, the water flows out from the water outlet pipe.
[0006] Preferably, the mechanical mixing tank is connected with the water inlet pipe at the bottom, raw water enters the bottom of the mixing tank through the water inlet pipe, a mixing stirrer is arranged in the middle, a motor is arranged at the upper part of the stirrer, a paddle is arranged in the middle, the motor is connected with the paddle through a shaft, the rotation of the paddle is driven by the motor, the flocculant and the pre-oxidant are fully mixed with the raw water, a water outlet is arranged at the upper part of the mixing tank, and the mixed water enters the flocculation tank through the water outlet.
[0007] Preferably, a micro-vortex flocculation ball is arranged in the flocculation tank, vortex is generated in the micro-vortex flocculation ball after the water flow passes through the micro-vortex flocculation ball, the alum flower flocculation body gradually becomes large and dense, and a channel steel support is arranged at the bottom of the micro-vortex flocculation ball to prevent the micro-vortex flocculation ball from falling to the bottom of the tank body.
[0008] Preferably, the perforated water collecting tank is an annular water collecting tank, is uniformly arranged above the inclined plate of the sedimentation tank, and is provided with overflow holes on the side wall to collect supernatant of the sedimentation tank. Meanwhile, support flat steels are arranged at the top at intervals to prevent the water collecting tank from deforming. During the collection of the supernatant, the water flow submerges the overflow holes, effectively preventing floating objects from entering the water collecting tank. The perforated water collecting tank flows into the filter tank through the water outlet of the sedimentation tank.
[0009] Preferably, the spiral inclined plate is spirally arranged along the partition plate between the flocculation tank and the sedimentation tank, water flows upwards through the gaps between the inclined plates to the upper part of the sedimentation tank, and the alum flower flocculation body slides along the spiral inclined plate to the bottom of the sedimentation tank.
[0010] Preferably, a sludge discharge hopper is arranged at the bottom of the flocculation tank and the sedimentation tank, the sludge discharge hopper is at a certain angle with the bottom plate, the alum flower flocculation body in the flocculation tank and the sedimentation tank settles to the bottom of the tank body due to gravity, slides to the central area of the tank body through the sludge discharge hopper, a sludge discharge pipe is connected to the central area, a sludge discharge valve is arranged at the end of the sludge discharge pipe, the sludge discharge valve is opened every interval to discharge the sludge at the bottom of the flocculation tank and the sedimentation tank to the outside of the device through water pressure.
[0011] Preferably, a sand washing and draining groove is arranged at the upper part of the filter tank, fine quartz sand, coarse quartz sand and a stainless steel filter plate are arranged in the middle, water flows through the fine quartz sand, the coarse quartz sand and the stainless steel filter plate in sequence to reach the water collecting area at the bottom of the filter tank, and is discharged through the water outlet pipe. The stainless steel filter plate is bent from a stainless steel plate, holes are arranged in the steel plate at intervals to install long-handle filter heads, the long-handle filter heads are provided with threads in the middle, and nuts are connected to the bottom to fix the filter heads and the filter plate.
[0012] Preferably, the shell is also connected with a drain pipe and a backwashing gas pipe, and the device needs to be backwashed once every time it operates for a period of time to restore the filtering capacity of the quartz sand, when backwashing, backwashing gas reaches the inside of the filter tank along the backwashing gas pipe, and passes through the stainless steel filter plate, the coarse quartz sand and the fine quartz sand in sequence, when passing through the fine quartz sand, the gas performs scrubbing on the quartz sand, and after the scrubbing, the gas enters the atmosphere; backwashing water enters the inside of the filter tank along the backwashing water pipe, and passes through the stainless steel filter plate, the coarse quartz sand and the fine quartz sand in sequence, when passing through the fine quartz sand, the quartz sand is cleaned, and the sewage after cleaning firstly enters the sand washing drain tank, and then is discharged to the outside of the device through the drain pipe.
[0013] Preferably, the filter tank (9) is closed when normal filtering, the water outlet valve (95) is opened, and the opening degree of the water outlet valve is gradually increased with the filtering, so that the water level in the filter tank (9) is kept constant, when the opening degree of the water outlet valve is increased to 100%, backwashing starts, the water outlet valve (95) is closed first, the backwashing gas washing valve (97) is opened, and the backwashing air enters the filter tank along the backwashing gas pipe (971) to perform gas washing on the fine quartz sand (91), after a period of gas washing, the backwashing water washing valve (96) and the drain valve (99) are opened, and the backwashing water enters the filter tank (9) along the backwashing water pipe (5), at this time, the gas and water simultaneously perform backwashing on the fine quartz sand (91), and the sewage generated by the backwashing firstly enters the sand washing drain tank (94), and then is discharged to the outside of the device through the drain pipe (10), after a period of simultaneous gas and water backwashing, the backwashing gas washing valve (97) is closed, and the fine quartz sand (91) is water washed alone, after a period of water washing alone, the backwashing water washing valve (96) and the drain valve (99) are closed, and the water outlet valve (95) is opened, at this time, the fine quartz sand restores the filtering function, and then the residual air in the filter tank is discharged to the atmosphere along the residual air discharge pipe (981), and the residual air discharge valve is closed, and a filtering period is thus ended.
[0014] Compared with the prior art, the integrated water purifying device has the advantages that the device combines the advantages of a mechanical mixing tank, a flocculation tank, an inclined plate sedimentation tank and a gas and water backwashing filter tank, has a small area, has good water outlet effect, can adapt to changes of water quantity and water quality of raw water and can avoid a dead water area of a conventional inclined pipe sedimentation tank. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure One is a sectional view of the integrated water purifying device
[0016] Figure Two is a top plan view of the integrated water purifying device
[0017] Figure ThreeFor integrated water purification device bottom plan view
[0018] Figure Four For mechanical mixing tank profile
[0019] Figure Five For perforated water collecting tank profile
[0020] Figure Six For stainless steel filter plate profile
[0021] Figure Seven For spiral inclined plate schematic diagram
[0022] Explanation of reference numerals: 1, water inlet pipe; 11, alumina addition adding pipe; 12, front chlorination adding pipe; 2, shell; 3, water outlet pipe; 4, sludge discharge pipe; 5, backwashing water pipe; 6, mechanical mixing tank; 61, mixing stirrer; 611, motor; 612, paddle; 613, shaft, 62, mixing tank water outlet; 7, flocculation tank; 71, micro-vortex flocculation ball; 72, flocculation tank water outlet; 73, channel steel support; 74, sludge discharge hopper; 75, sludge discharge pipe; 76, sludge discharge valve; 8, sedimentation tank; 81, spiral inclined plate, 82, perforated water collecting tank; 821, overflow hole; 822, support flat steel; 83, sedimentation tank water outlet; 9, filter tank; 91, fine quartz sand; 92, coarse quartz sand; 93, stainless steel filter plate; 931, stainless steel plate; 932, long handle filter head; 933, nut; 94, perforated water collecting tank; 95, water outlet valve; 96, backwashing water washing valve; 97, backwashing air washing valve; 971, backwashing air pipe; 98, excess air discharge valve; 981, excess air discharge pipe; 99, drainage valve; 10, drainage pipe DETAILED DESCRIPTION
[0023] In order to make the person skilled in the art better understand the purpose and technical scheme of the present application, the technical scheme in the present application will be clearly described below in combination with the drawings and embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Therefore, based on the embodiments of the present application, all other embodiments obtained by the person skilled in the art without creative labor fall within the scope of protection of the present application.
[0024] [0024As Figure One 、 Figure Two 、 Figure ThreeAs shown, the integrated water purification device comprises a water inlet pipe (1), a shell (2), a water outlet pipe (3), a sludge discharge pipe (4), a backwashing water pipe (5), and a drain pipe (10). The shell (2) is divided into a mechanical mixing tank (6) provided with a mixing stirrer (61), a flocculation tank (7) provided with micro-vortex flocculation balls (71), a sedimentation tank (8) provided with a spiral inclined plate (81) and a water collecting tank (82), and a filter tank (9) provided with fine quartz sand (91), coarse quartz sand (92), a stainless steel filter plate (93), and a sand washing drain tank (94) by a partition. Raw water in the mechanical mixing tank (6) flows to the flocculation tank (7) through the upper mixing tank outlet (62), water in the flocculation tank (7) flows to the sedimentation tank (8) through the bottom flocculation tank outlet (72), water in the sedimentation tank (8) is collected through the perforated water collecting tank (82) and then flows to the filter tank (9) through the sedimentation tank outlet (83), and water in the filter tank (9) flows out through the filter tank bottom outlet pipe (3).
[0025] As shown in Figure One , Figure Two , Figure Three Before raw water flows into the shell (2) through the water inlet pipe (1), the alum flocculant and the pre-oxidant are added through the alum adding short pipe (11) and the pre-chlorine adding short pipe (12) on the water inlet pipe (1). Then, the raw water enters the mechanical mixing tank (6) from the bottom of the mechanical mixing tank (6), and the flocculant and the pre-oxidant are fully mixed with the raw water in the mechanical mixing tank (6) before flowing into the flocculation tank (7). The micro-vortex flocculation balls (71) are arranged in the flocculation tank (7), which can increase the size of the alum flocculation balls. Then, the flocculation balls reach the flocculation tank outlet (72) through the bottom of the flocculation tank (7). The water flows to the bottom of the sedimentation tank (8) and then gradually rises. The spiral inclined plate (81) can realize the effect of separating the sludge and water. The alum flocculation balls slide along the spiral inclined plate (81) and fall to the bottom of the sedimentation tank (8). The upper clear water reaches the sedimentation tank outlet (83) through the perforated water collecting tank (82), and then reaches the upper layer of the filter tank (9). Then, the quartz sand (91) can further purify the water. Finally, the water flows out from the outlet pipe (3).
[0026] As shown in Figure Four The mechanical mixing tank (6) is connected with the water inlet pipe (1) at the bottom. The raw water enters the bottom of the mechanical mixing tank (6) through the water inlet pipe (1). The mixing stirrer (61) is arranged in the middle of the mechanical mixing tank (6). The motor (611) is arranged at the upper part of the mixing stirrer (61). The paddle (612) is arranged in the middle of the mixing stirrer (61). The motor (611) is connected with the paddle (612) through the shaft (613). The rotation of the paddle (612) driven by the motor (611) can fully mix the flocculant and the pre-oxidant with the raw water. The mixing tank outlet (62) is arranged at the upper part of the mechanical mixing tank (6). The mixed water enters the flocculation tank (7) through the mixing tank outlet (62).
[0027] As Figure One , Figure Two , Figure Three indicated, the flocculation tank (7) is provided with a micro-vortex flocculation ball (71), and vortex is generated in the micro-vortex flocculation ball (71) after the water flow passes through the micro-vortex flocculation ball (71), and the alum flocculation body gradually becomes large and dense, and the micro-vortex flocculation ball is provided with a channel steel support (73) at the bottom to prevent the micro-vortex flocculation ball (71) from falling to the bottom of the tank body.
[0028] As Figure One , Figure Two , Figure Five indicated, the perforated water collecting tank (82) is annular and is uniformly arranged above the spiral inclined plate (81), the perforated water collecting tank (82) is provided with overflow holes (821) on the side wall to collect the supernatant of the sedimentation tank (8), and a support flat steel (822) is arranged at the top at intervals to prevent the perforated water collecting tank (82) from deforming, and in the process of collecting the supernatant, the water flow submerges the overflow holes, effectively preventing floating objects from entering the water collecting tank, and the perforated water collecting tank (82) flows into the filter tank (9) through the sedimentation tank outlet (83).
[0029] As Figure One , Figure Seven indicated, the spiral inclined plate (81) is spirally arranged along the partition plate between the flocculation tank (7) and the sedimentation tank (8), and the water flows upwards through the gap between the spiral inclined plates (81) to the upper part of the sedimentation tank, and the alum flocculation body slides along the spiral inclined plate (81) to the bottom of the sedimentation tank (8).
[0030] As Figure One , Figure Two , Figure Three indicated, the bottom of the flocculation tank (7) and the sedimentation tank (8) is provided with a sludge discharge hopper (74), the sludge discharge hopper (74) is at a certain angle with the bottom plate, and when the alum flocculation body in the flocculation tank (7) and the sedimentation tank (8) settles to the bottom of the tank body due to gravity, it slides to the central area of the tank body through the sludge discharge hopper (74), the central area is connected with a sludge discharge pipe (75), the sludge discharge pipe (75) is provided with a sludge discharge valve (76) at the end, and the sludge discharge valve (76) is opened every interval to discharge the sludge at the bottom of the flocculation tank (7) and the sedimentation tank (8) to the outside of the device by water pressure.
[0031] As Figure One , Figure Two , Figure ThreeAs shown, the filter tank (9) is provided with a sand washing and drainage trough (94) at the top and fine quartz sand (91), coarse quartz sand (92) and stainless steel filter plate (93) in the middle. After the water flows to the filter tank (9), it passes through the fine quartz sand (91), coarse quartz sand (92) and stainless steel filter plate (93) in sequence to reach the water collection area at the bottom of the filter tank and is discharged through the water outlet pipe (3).
[0032] like Figure One , Figure Two , Figure Three As shown, the shell (2) is also connected to a drain pipe (10) and a backwashing air pipe (95). After the device has been running for a period of time, it needs to be backwashed once to restore the filtration capacity of the fine quartz sand (91). When backwashing, the backwashing gas reaches the inside of the filter tank (9) along the backwashing air pipe (95) and passes through the stainless steel filter plate (93), coarse quartz sand (92), and fine quartz sand (91) in sequence. When passing through the fine quartz sand (91), the gas scrubs the fine quartz sand (91) and enters the atmosphere after scrubbing. The backwashing water enters the inside of the filter tank (9) along the backwashing water pipe and passes through the stainless steel filter plate (93), coarse quartz sand (92), and fine quartz sand (91) in sequence. When passing through the fine quartz sand (91), the fine quartz sand (91) is cleaned. The wastewater after cleaning first enters the sand washing drainage tank (94) and then is discharged to the outside of the device through the drain pipe (10).
[0033] like Figure One , Figure Two , Figure ThreeAs shown, when normal filtration, the filter tank (9), drain valve (99), backwash water valve (96), backwash gas washing valve (97), air exhaust valve (98) is closed, the water valve (95) is opened, the water valve with the filtration, the valve opening gradually increases, to ensure that the filter tank (9) water level remains constant, when the water valve opening increases to 100%, backwash begins, first water valve (95) is closed, backwash gas washing valve (97) is opened, backwash air along the backwash gas pipe (971) into the filter tank, fine quartz sand (91) is washed by air, after a period of air washing, backwash water valve (96) and drain valve (99) are opened, backwash water along the backwash water pipe (5) into the filter tank (9), at this time, the gas and water are backwashed simultaneously, the sewage produced by backwashing first enters the sand washing drain tank (94), and then is discharged to the device outside through the drain pipe (10), after a period of air and water backwashing, backwash gas washing valve (97) is closed, at this time, the fine quartz sand (91) is washed by water alone, after a period of water washing alone, backwash water valve (96) and drain valve (99) are closed, the water valve (95) is opened, at this time, the fine quartz sand restores the filtration function, then the air exhaust valve (98) is opened, after the air remaining in the filter tank is discharged to the atmosphere along the air exhaust pipe (981), the air exhaust valve is closed, a filtration cycle is thus completed.
[0034] As shown in Figure One , Figure Three , Figure Six As shown, the stainless steel filter plate (93) is bent from a stainless steel plate (931), and the steel plate is provided with a hole every interval to install a long handle filter head (932). The long handle filter head (932) has a thread in the middle, and a nut (933) is connected to the bottom to fix the long handle filter head (932) and the stainless steel plate (931).
[0035] Although the embodiments of the present application have been shown and described, the above embodiments are preferred embodiments of the present application, and the embodiments of the present application are not limited to the above embodiments. Changes, modifications, substitutions, combinations and simplifications made by those of ordinary skill in the art without departing from the principles and spirit of the present application should be equivalent replacement methods, and are included in the protection scope of the present application.
Claims
1. An integrated water purification device, comprising a water inlet pipe (1), a shell (2), a water outlet pipe (3), a sludge discharge pipe (4), a backwashing water pipe (5), and a drain pipe (10), wherein the shell (2) is divided into a mechanical mixing tank (6) provided with a mixing stirrer (61), a flocculation tank (7) provided with micro-vortex flocculation balls (71), a sedimentation tank (8) provided with a spiral inclined plate (81) and a perforated water collecting tank (82), and a filter tank (9) provided with fine quartz sand (91), coarse quartz sand (92), a stainless steel filter plate (93), and a sand washing drain tank (94) by a partition plate; raw water in the mechanical mixing tank (6) flows to the flocculation tank (7) through a mixing tank water outlet (62) at the upper part of the mechanical mixing tank (6); water in the flocculation tank (7) flows to the sedimentation tank (8) through a flocculation tank water outlet (72) at the bottom of the flocculation tank (7); water in the sedimentation tank (8) is collected through the perforated water collecting tank (82) and then flows to the filter tank (9) through a sedimentation tank water outlet (83); and water in the filter tank (9) flows out through a filter tank bottom water outlet pipe (3).
2. The integrated water purifier of claim 1, wherein Before raw water flows into the shell (2) through the water inlet pipe (1), the raw water first passes through alum adding short pipes (11) and pre-chlorination short pipes (12) on the water inlet pipe (1) for adding flocculants and pre-oxidants; then the raw water enters the mechanical mixing tank (6) from the bottom of the mechanical mixing tank (6), and the flocculants and pre-oxidants are fully mixed with the raw water in the mechanical mixing tank (6); the flocculants and pre-oxidants are then mixed with the raw water in the flocculation tank (7) through the micro-vortex flocculation balls (71) arranged in the flocculation tank (7); the flocculants and pre-oxidants are then mixed with the raw water in the sedimentation tank (8) through the spiral inclined plate (81) arranged in the sedimentation tank (8); the flocculants and pre-oxidants are then mixed with the raw water in the filter tank (9) through the fine quartz sand (91) arranged in the filter tank (9); and finally the water flows out from the water outlet pipe (3).
3. The integrated water purifier of claim 2, wherein The mechanical mixing tank (6) is connected with the water inlet pipe (1) at the bottom of the mechanical mixing tank (6), raw water enters the bottom of the mechanical mixing tank (6) through the water inlet pipe (1), a mixing stirrer (61) is arranged in the middle of the mechanical mixing tank (6), a motor (611) is arranged at the upper part of the mixing stirrer (61), a paddle (612) is arranged in the middle of the mixing stirrer (61), the motor (611) is connected with the paddle (612) through a shaft (613), the rotation of the paddle (612) is driven by the motor (611), the flocculants and pre-oxidants are fully mixed with the raw water, a mixing tank water outlet (62) is arranged at the upper part of the mechanical mixing tank (6), and the mixed water flows into the flocculation tank (7) through the mixing tank water outlet (62).
4. The integrated water purifier of claim 2, wherein The micro-vortex flocculation balls (71) are arranged in the flocculation tank (7), vortexes are generated in the micro-vortex flocculation balls (71) after the water flows through the micro-vortex flocculation balls (71), the alum flocculation bodies gradually become larger and denser, and groove steel supports (73) are arranged at the bottom of the micro-vortex flocculation balls (71) to prevent the micro-vortex flocculation balls (71) from falling to the bottom of the tank.
5. The integrated water purifier of claim 2, wherein The perforated water collecting tank (82) is annular and uniformly arranged above the spiral baffle (81). The perforated water collecting tank (82) is provided with overflow holes (821) on the side wall to collect supernatant in the sedimentation tank (8). Meanwhile, support flat steel (822) is arranged at the top of the perforated water collecting tank (82) at intervals to prevent the deformation of the perforated water collecting tank (82). During the collection of supernatant, the water flow submerges the overflow holes, effectively preventing floating objects from entering the water collecting tank. The perforated water collecting tank (82) flows into the filter tank (9) through the water outlet (83) of the sedimentation tank.
6. The integrated water purifier of claim 2, wherein The spiral baffle (81) is spirally arranged along the partition plate between the flocculation tank (7) and the sedimentation tank (8). Water flows upwards through the gap between the spiral baffles (81) to the top of the sedimentation tank. Alum flocculation flocs slide down the spiral baffle (81) to the bottom of the sedimentation tank (8).
7. The integrated water purifier of claim 2, wherein The bottom of the flocculation tank (7) and the sedimentation tank (8) is provided with a sludge discharge hopper (74) which is at an angle with the bottom plate. When the alum flocculation flocs in the flocculation tank (7) and the sedimentation tank (8) settle to the bottom of the tank body due to gravity, they slide through the sludge discharge hopper (74) to the central area of the tank body. The central area is connected to a sludge discharge pipe (75). The end of the sludge discharge pipe (75) is provided with a sludge discharge valve (76). After a certain period of time, the sludge discharge valve (76) is opened to discharge the sludge at the bottom of the flocculation tank (7) and the sedimentation tank (8) to the outside of the device through water pressure.
8. The integrated water purification device of claim 2, wherein The upper part of the filter tank (9) is provided with a sand washing and drainage groove (94). The middle part is provided with fine quartz sand (91), coarse quartz sand (92) and stainless steel filter plate (93). After the water flow reaches the filter tank (9), it passes through the fine quartz sand (91), the coarse quartz sand (92) and the stainless steel filter plate (93) in turn to reach the water collecting area at the bottom of the filter tank, and is discharged through the water outlet pipe (3). The stainless steel filter plate (93) is bent from a stainless steel plate (931). The steel plate is provided with a hole at intervals to install a long handle filter head (932). The middle part of the long handle filter head (932) is provided with a thread, and the bottom is connected to a nut (933) to fix the long handle filter head (932) and the stainless steel plate (931).
9. The integrated water purification device of claim 2, wherein The shell (2) is also connected to a drainage pipe (10) and a backwashing gas pipe (95). After the device operates for a period of time, it needs to be backwashed to restore the filtering capacity of the fine quartz sand (91). When backwashing, the backwashing gas reaches the inside of the filter tank (9) along the backwashing gas pipe (95), and then passes through the stainless steel filter plate (93), the coarse quartz sand (92) and the fine quartz sand (91) in turn. When passing through the fine quartz sand (91), the gas performs scrubbing on the fine quartz sand (91), and then enters the atmosphere. The backwashing water enters the inside of the filter tank (9) along the backwashing water pipe, and then passes through the stainless steel filter plate (93), the coarse quartz sand (92) and the fine quartz sand (91) in turn. When passing through the fine quartz sand (91), the gas performs scrubbing on the fine quartz sand (91), and then enters the atmosphere. The backwashing water enters the inside of the filter tank (9) along the backwashing water pipe, and then passes through the stainless steel filter plate (93), the coarse quartz sand (92) and the fine quartz sand (91) in turn. When passing through the fine quartz sand (91), the gas performs scrubbing on the fine quartz sand (91), and then enters the atmosphere.
10. The integrated water purification device of claim 2, wherein When the filter tank (9) is normally filtered, the drain valve (99), backwash water washing valve (96), backwash air washing valve (97), and residual air discharge valve (98) are closed, and the water outlet valve (95) is opened. The water outlet valve gradually increases the opening degree as the filtration proceeds, ensuring that the water level in the filter tank (9) remains constant. When the opening degree of the water outlet valve increases to 100%, backwashing begins. First, the water outlet valve (95) is closed, and the backwash air washing valve (97) is opened. Backwashing air enters the filter tank along the backwash air pipe (971) to air wash the fine quartz sand (91). After a period of air washing, the backwash water washing valve (96) and the drain valve (99) are opened, and backwashing water enters the filter tank (9) along the backwash water pipe (5). At this time, the fine quartz sand (91) is simultaneously backwashed by air and water. The sewage produced by backwashing first enters the sand washing drain tank (94) and then is discharged to the outside of the device through the drain pipe (10). After a period of simultaneous air and water backwashing, the backwash air washing valve (97) is closed. At this time, the fine quartz sand (91) is water washed alone. After a period of water washing alone, the backwash water washing valve (96) and the drain valve (99) are closed, and the water outlet valve (95) is opened. At this time, the fine quartz sand resumes its filtering function. Then, the residual air discharge valve (98) is opened. After the residual air in the filter tank is discharged to the atmosphere along the residual air discharge pipe (981), the residual air discharge valve is closed. A filtration cycle is thus completed.