Drinking water purification device

Abstract

The present invention is applicable to the field of water treatment technology and provides a drinking water purification device, including a box body, wherein a grid flocculation tank, an inclined tube sedimentation tank, and a V-shaped filter are sequentially arranged inside the box body from left to right, and an inlet pipe is arranged in the mixing zone; the inlet pipe is provided with a jet aeration device; a backwash drain trough is provided above the filter material; a backwash drain outlet is provided on one side of the backwash drain trough; the V-shaped filter is connected to the bent clean water zone below through a water distributor; the bent clean water zone is respectively provided with a switchable backwash air inlet, a switchable backwash water inlet, and a switchable clean water outlet, thereby the present invention can purify raw water, the setting of the jet aeration device can aerate and oxygenate the raw water, and the fine bubbles in the raw water can stir the raw water during movement so that the reagent and the raw water are fully mixed in the mixing zone, and the setting of the backwash air inlet and the backwash water inlet can make the filter material backwash more fully and avoid the filter material from being compacted.

Description

Technical Field

[0001] The present invention relates to the technical field of water treatment, and in particular to a drinking water purification device. Background Art

[0002] Raw water mainly comes from rivers, lakes and reservoirs. After purification, raw water can be used as drinking water for human use in daily life.

[0003] Existing drinking water purification systems require stirring and mixing the raw water after adding the reagent. During the flocculation stage, the mixed raw water experiences a monotonous flow pattern, making it difficult for tiny floccules floating in the upper layers of the water to contact and condense. These floccules tend to remain suspended in the water and struggle to settle, resulting in poor flocculation. Relying solely on backwashing during filtration is ineffective, as suspended matter accumulates in the gaps between the filter media after a certain period of filtration, impacting filtration efficiency.

[0004] In the existing V-type filter tank using granular filter media (such as quartz sand filter media), water distributors are often evenly distributed on the supporting partitions at the bottom of the V-type filter tank. When the existing water distributor is blocked or damaged, the quartz sand filter media can only be cleaned out of the V-type filter tank before the water distributor is replaced. Replacing the water distributor requires a lot of manpower and material resources and is more troublesome. Summary of the Invention

[0005] In response to the above-mentioned defects, the purpose of the present invention is to provide a drinking water purification device, which can purify raw water. The setting of the jet aeration device can bring air into the raw water after the drug is added, and aerate and oxygenate the raw water. At the same time, the fine bubbles generated by the water flow injected into the bottom of the mixing zone can stir the raw water during the upward movement so that the drug and the raw water are fully mixed in the mixing zone; the setting of the backwash air inlet and the backwash water inlet can backwash the filter material, which is beneficial to cleaning the suspended matter in the gaps of the filter material and avoiding the suspended matter affecting the filtration efficiency of the filter material; the setting of the inspection port, the mounting part, and the mounting hole can facilitate the replacement of the water distributor, and the setting of the rope body can facilitate the removal of a damaged or blocked water distributor.

[0006] To achieve the above-mentioned object, the present invention provides a drinking water purification device, comprising a housing, wherein a grid flocculation tank, an inclined tube sedimentation tank, and a V-shaped filter are sequentially connected inside the housing from left to right, wherein the grid flocculation tank and the inclined tube sedimentation tank are both connected to a bent sludge zone below; a sludge discharge pipe is provided in the bent sludge zone; a mixing zone is provided at the front end of the grid flocculation tank; a water inlet pipe is provided in the mixing zone; the water inlet pipe is provided with a jet aeration device, and the water inlet pipe passes raw water mixed with air into the bottom of the mixing zone; the grid flocculation tank is connected above the mixing zone;

[0007] The V-shaped filter tank is provided with filter material; a backwash drainage trough is provided above the filter material; a backwash drainage outlet is provided on one side of the backwash drainage trough; a plurality of evenly distributed water distributors are provided at the bottom of the filter material; the V-shaped filter tank is connected to the bent clean water area below through the water distributor; the bent clean water area is provided with a switchable exhaust device; the bent clean water area is respectively provided with a switchable backwash air inlet, a switchable backwash water inlet, and a switchable clean water outlet.

[0008] According to the drinking water purification device of the present invention, the first flocculation tank, the second flocculation tank, the third flocculation tank, the fourth flocculation tank and the fifth flocculation tank are sequentially arranged in the grid flocculation tank, and the five flocculation tanks are separated by baffles; the bottom of the first flocculation tank is connected to the second flocculation tank, the top of the second flocculation tank is connected to the third flocculation tank, the bottom of the third flocculation tank is connected to the fourth flocculation tank, and the top of the fourth flocculation tank is connected to the fifth flocculation tank; the second flocculation tank is provided with flocculation reaction balls; the third flocculation tank is provided with an A-type strip grid, and the fourth flocculation tank is provided with a B-type strip grid.

[0009] According to the drinking water purification device of the present invention, an inclined tube filler is provided in the inclined tube sedimentation tank; a flat water distribution device is provided at the connecting position between the grid flocculation tank and the inclined tube sedimentation tank, and the flat water distribution device is used to evenly distribute water to the bottom of the inclined tube filler; the flat water distribution device is located below the inclined tube filler; a water collecting weir is provided above the inclined tube filler; a water flow pipe is provided above the side wall between the inclined tube sedimentation tank and the V-shaped filter, and the water flow pipe is connected to the water collecting weir; a water distribution trough is provided above the V-shaped filter, and the water distribution trough is located below the end of the water flow pipe, and the water distribution trough is used to evenly distribute water above the filter material; the exhaust device is used to discharge gas to the top of the drainage trough.

[0010] According to the drinking water purification device of the present invention, the water inlet pipe is connected to the water inlet electric valve; the mud discharge pipe is connected to the mud discharge electric valve; the clean water outlet is connected to the clean water electric valve, and the clean water electric valve is connected to the clean water tank; the clean water tank is provided with a first liquid level meter for controlling the operation of the water inlet electric valve to open low and stop high; the backwash sewage outlet is connected to the backwash sewage outlet electric valve; the backwash water inlet is connected to the backwash water inlet electric valve; the backwash water inlet electric valve is connected to the backwash pump; the backwash air inlet is connected to the backwash air inlet electric valve; the backwash air inlet electric valve is connected to the backwash fan.

[0011] According to the drinking water purification device of the present invention, the exhaust device includes an exhaust pipe and a water level control valve. The bottom end of the exhaust pipe is connected to the top of the bent clean water area, and the exhaust pipe is equipped with a water level control valve.

[0012] According to the drinking water purification device of the present invention, the V-shaped filter is provided with a second liquid level meter; the second liquid level meter is electrically connected to the backwash air inlet electric valve and the backwash water inlet electric valve.

[0013] According to the drinking water purification device of the present invention, the water distributor includes a water distribution body and a mounting part. The water distribution body is connected to one end of a rope body above, and the water distribution body is connected to the mounting part below; the mounting part is detachably mounted at the mounting hole position of the support partition; an annular inflatable part is sleeved on the outside of the mounting part; the inside of the mounting part is connected to a binding rod; and an openable inspection port is provided in the bent clean water area.

[0014] According to the drinking water purification device of the present invention, the mounting portion is provided with a receiving groove; the inflatable portion includes an elastic pneumatic tire; the elastic pneumatic tire is connected to one end of a hose, and the other end of the hose is connected to an air valve; the hose passes through the side wall of the mounting portion and enters the inner side of the mounting portion.

[0015] According to the drinking water purification device of the present invention, the mounting portion is provided with a plurality of limiting holes; the supporting partition is provided with positioning holes that cooperate with the limiting holes; the positioning holes are provided with spring lock tongues; a protective shell with an open bottom is connected below the mounting portion; the internal space of the protective shell can accommodate a water distribution body; a receiving groove is provided on the top of the water distribution body, and a regularly coiled rope body is accommodated inside the receiving groove; and a plurality of fixing rods for bundling the rope body are connected to the top of the V-shaped filter tank.

[0016] The invention provides a drinking water purification device, comprising a box body, wherein a grid flocculation tank, an inclined tube sedimentation tank and a V-shaped filter are sequentially connected inside the box body from left to right, and the arrangement of the grid flocculation tank can facilitate the coagulation and sedimentation of flocculants; the grid flocculation tank and the inclined tube sedimentation tank are both connected to the bent sludge area below, and the bent sludge area is provided with a sludge discharge pipe. The arrangement of the bent sludge area and the sludge discharge pipe can conveniently discharge the deposited flocculants and avoid the flocculants from accumulating for a long time inside the grid flocculation tank and the inclined tube sedimentation tank; a mixing area is provided at the front end of the grid flocculation tank, and an inlet pipe is provided in the mixing area, and the inlet pipe is provided with a jet aeration device, and the inlet pipe passes the raw water mixed with air into the bottom of the mixing area, and the jet aeration device can aerate and oxygenate the raw water after the addition of the agent, and at the same time fill the raw water with a certain amount of air, and the raw water passes into the bottom of the mixing area, and the mixed air in the raw water floats up and can stir the raw water, which is conducive to fully mixing the raw water and the agent; the grid flocculation tank is connected above the mixing area, and the grid flocculation tank is connected above the mixing area, and the grid flocculation tank is connected above the mixing area. The setting of the coagulation tank can facilitate the sedimentation of flocs formed in the raw water after sufficient mixing; the V-shaped filter is provided with filter media, a backwash drain trough is provided above the filter media, and a backwash drain outlet is provided on one side of the backwash drain trough. The setting of the backwash drain trough and the backwash drain outlet can facilitate the discharge of water with suspended matter after backwashing, thereby preventing the suspended matter from re-entering the filter media; a number of evenly distributed water distributors are provided at the bottom of the filter media, and the V-shaped filter is connected to the bent clean water area below through the water distributors. The setting of the water distributors can allow the filtered water to flow evenly into the lower bent clean water area, which is conducive to fully utilizing the filter media; the bent clean water area is provided with a switchable exhaust device, and the bent clean water area is respectively provided with a switchable backwash air inlet, a switchable backwash water inlet, and a switchable clean water outlet. The backwash air inlet and the backwash water inlet can respectively allow water and air to enter. Under the action of air and water alone or together, the filter media can be backwashed more fully, the backwash effect is improved, and the filter media can be prevented from compacting. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0019] Figure 3 This is a structural diagram of the water distributor installed on the supporting partition;

[0020] Figure 4 This is a partial cross-sectional view of the water distributor installed on the supporting partition;

[0021] Figure 5 It is a schematic diagram of the water distributor structure;

[0022] Figure 6 This is a schematic diagram of the water distributor structure from the second perspective;

[0023] Figure 7It is a cross-sectional view of the water distributor structure;

[0024] In the figure: 1- box, 2- grid flocculation tank, 3- inclined tube sedimentation tank, 4- V-type filter, 5- bent sludge area, 6- bent clean water area, 7- water inlet pipe, 8- jet aeration device, 9- baffle, 10- mixing area, 11- first flocculation tank, 12- second flocculation tank, 13- third flocculation tank, 14- fourth flocculation tank, 15- fifth flocculation tank, 16- flocculation reaction ball, 17- A-type strip grid, 18- B-type strip grid, 19- mud discharge pipe, 20- flat water distribution device, 21- water collection weir, 22- inclined tube filler, 23- water pipe, 24- water distribution tank, 25- backwash sewage tank, 26- Filter material, 27-water distributor, 28-exhaust pipe, 29-clean water outlet, 30-backwash air inlet, 31-backwash water inlet, 32-backwash sewage outlet, 33-water inlet electric valve, 34-sludge discharge electric valve, 35-clean water electric valve, 36-backwash air inlet electric valve, 37-backwash water inlet electric valve, 38-backwash sewage discharge electric valve, 39-fluid movement direction, 40-support partition, 41-spring lock tongue, 42-rope body, 43-water distribution body, 44-installation part, 45-elastic inflatable tire, 46-limiting hole, 47-protective shell, 48-binding rod, 49-hose, 50-valve nozzle, 51-loading groove. DETAILED DESCRIPTION

[0025] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0026] See also Figure 1 、 Figure 2The present invention provides a drinking water purification device, which includes a housing 1. Inside the housing 1, a grid flocculation tank 2, an inclined tube sedimentation tank 3, and a V-shaped filter tank 4 are sequentially connected from left to right. The setting of the grid flocculation tank 2 can change the water flow speed and direction, so that the reagent and raw water are mixed more thoroughly to form large particle flocs. The setting of the inclined tube sedimentation tank 3 settles the large particle flocs at the front into the bent sludge area 5, preventing a large amount of flocs from entering the V-shaped filter tank 4. The grid flocculation tank 2 and the inclined tube sedimentation tank 3 are both connected to the bent sludge area 5 below. The bent sludge area 5 is provided with a sludge discharge pipe 19. The bent sludge area 5 and the sludge discharge pipe 19 cooperate to discharge the sludge deposited at the bottom of the grid flocculation tank 2 and the inclined tube sedimentation tank 3, preventing a large amount of sludge from being deposited at the bottom of the two. A mixing zone 10 is provided at the front end of the grid flocculation tank 2. A water inlet pipe 7 is provided in the mixing zone 10. The water inlet pipe 7 is provided with a jet aeration device 8. The water inlet pipe 7 passes the raw water mixed with air into the bottom of the mixing zone 10. The top of the mixing zone 10 is connected to the grid flocculation tank 2. The water inlet pipe 7 can pass the raw water after adding the agent into the bottom of the mixing zone 10. The jet aeration device 8 can fill the raw water with air, which is beneficial to aeration and oxygenation of the raw water. The bubbles contained in the raw water entering the bottom of the mixing zone 10 move upward to stir the raw water, which is beneficial to make the agent and the raw water fully mixed in the mixing zone 10.

[0027] A filter material 26 is provided within the V-shaped filter tank 4. A backwash drain trough 25 is provided above the filter material 26. A backwash drain outlet 32 ​​is provided on one side of the backwash drain trough 25. The backwash drain trough 25 and the backwash drain outlet 32 ​​cooperate to discharge raw water mixed with suspended matter during the backwash process, preventing the suspended matter flushed out of the filter material 26 by backwashing from re-entering the filter material 26. Several evenly distributed water distributors 27 are provided at the bottom of the filter material 26. The water distributors 27 are configured to form a relatively uniform water channel at the bottom of the filter material 26, directing the water into the bent clear water area 6, thereby fully utilizing the filter material 26. The V-shaped filter tank 4 is connected to the bent clean water area 6 below through the water distributor 27. The clean water bending area 6 is provided with a switchable exhaust device, which is used to discharge excess air in the bent clean water area 6. The bent clean water area 6 is respectively provided with a switchable backwash air inlet 30, a switchable backwash water inlet 31, and a switchable clean water outlet 29. After air is passed into the backwash air inlet 30, the filter material 26 can be air-washed and backwashed. After water is passed into the backwash water inlet 31, the filter material 26 can be water-washed and backwashed. Backwashing can flush suspended matter in the filter material 26 out of the filter material 26 and discharge it through the backwash drain outlet 32.

[0028] See also Figure 1 、 Figure 2Furthermore, the grid flocculation tank 2 of the present invention is sequentially provided with a first flocculation tank 11, a second flocculation tank 12, a third flocculation tank 13, a fourth flocculation tank 14, and a fifth flocculation tank 15. The five flocculation tanks are separated by baffles 9. The bottom of the first flocculation tank 11 is connected to the second flocculation tank 12, the top of the second flocculation tank 12 is connected to the third flocculation tank 13, the bottom of the third flocculation tank 13 is connected to the fourth flocculation tank 14, and the top of the fourth flocculation tank 14 is connected to the fifth flocculation tank 15. The second flocculation tank 12 is provided with a flocculation reaction ball 16, the third flocculation tank 13 is provided with an A-type strip grid 17, and the fourth flocculation tank 14 is provided with a B-type strip grid 18.

[0029] The inclined tube sedimentation tank 3 is provided with an inclined tube filler 22 (for example, a hexagonal honeycomb filler). The inclined tube filler 22 can effectively improve the laminar flow state, reduce turbulence, and shorten the sedimentation distance of the flocs. A flat water distribution device 20 located below the inclined tube filler 22 is provided at the connection position between the grid flocculation tank 2 and the inclined tube sedimentation tank 3. The flat water distribution device 20 is used to evenly distribute water below the inclined tube filler 22. A water collection weir 21 is provided above the inclined tube filler 22. A water pipe 23 is provided above the side wall between the inclined tube sedimentation tank 3 and the V-shaped filter 4. The water pipe 23 is connected to the water collection weir 21. A water distribution trough 24 is provided above the V-shaped filter 4. The water distribution trough 24 is located below the end of the water pipe 23. The water distribution trough 24 is used to evenly distribute water above the filter material 26. The exhaust device is used to discharge gas above the water distribution trough 24.

[0030] See also Figure 1 、 Figure 2 Furthermore, the water inlet pipe 7 is connected to a water inlet electric valve 33, the mud discharge pipe 19 is connected to a mud discharge electric valve 34, and the clean water outlet 29 is connected to a clean water electric valve 35. The clean water electric valve 35 is connected to the clean water tank. The clean water tank is provided with a first liquid level meter for controlling the operation of the water inlet electric valve 33, which opens at a low point and stops at a high point. When the clean water level in the clean water tank reaches a low point, the water inlet electric valve 33 opens. When the clean water level in the clean water tank reaches a high point, the water inlet electric valve 33 closes. The backwash sewage outlet 32 ​​is connected to a backwash sewage outlet electric valve 38. The backwash water inlet 31 is connected to a backwash water inlet electric valve 37. The backwash water inlet electric valve 37 is connected to a backwash pump. The backwash air inlet 30 is connected to a backwash air inlet electric valve 36. The backwash air inlet electric valve 36 is connected to a backwash fan.

[0031] The exhaust device includes an exhaust pipe 28 and a water level control valve. The bottom end of the exhaust pipe 28 is connected to the top of the bent clean water area 6. The exhaust pipe 28 is equipped with a water level control valve. When the water level in the V-type filter 4 is lower than a specific water level, the water level control valve is in an open state. When the water level in the V-type filter 4 is higher than a specific water level, the water level control valve is in a closed state. The V-type filter 4 is provided with a second liquid level meter. The second liquid level meter is electrically connected to the backwash air inlet electric valve 36 and the backwash water inlet electric valve 37. The second liquid level meter can monitor the liquid level of the V-type filter 4 and can control the start of the backwash process. When the liquid level in the V-type filter 4 rises to a specific water level (the water level control valve is closed synchronously, and the exhaust pipe 28 no longer discharges air), the V-type filter 4 enters the backwash process of air washing backwashing-air and water combined backwashing-water washing backwashing in sequence. The movement direction 39 of the fluid includes the movement direction of fluids such as air, sludge, and water.

[0032] See also Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 Preferably, the water distributor 27 includes a water distribution body 43 (the main function of the water distribution body 43 is to prevent the filter material 26 from being lost, such as a cylindrical filter cap structure, which is a prior art and will not be described in detail here), an installation part 44, and one end of a rope body 42 is connected above the water distribution body 43. The rope body 42 is used to extend above the filter material 26 to facilitate workers to pull the damaged water distributor 27 out from the bottom of the filter material 26.

[0033] The water distribution body 43 is connected to the mounting portion 44 below. The mounting portion 44 can be removably mounted at the mounting hole position of the support partition 40. The support partition 40 is used to separate the V-shaped filter tank 4 and the bent clean water area 6. The mounting hole can be used for the water distribution body 43 and the mounting portion 44 to pass through. When the mounting hole and the mounting portion 44 are matched, the filter material 26 will not enter the mounting hole. The mounting portion 44 is provided with an annular inflatable portion on the outside. After the annular inflatable portion is inflated, it can be used to block the gap between the side wall of the mounting hole and the side wall of the mounting portion 44 to prevent water from flowing through. The inside of the mounting portion 44 is connected to a binding rod 48. The binding rod 48 can be used to bind the top of the rope body 42. After the rope body 42 is bound to the binding rod 48, the damaged water distributor 27 can be driven to rise to the top of the rope body 42 of the replaced intact water distributor 27 when it rises, making it convenient to replace the water distributor 27 next time. The bending and clear water area 6 is provided with an openable inspection port, which can provide workers with a passage to replace the water distributor 27 after opening the inspection port. The provision of the inspection port can facilitate workers to enter the bending and clear water area 6 to replace the water distributor 27.

[0034] The mounting portion 44 is provided with a receiving groove, which can conveniently place the inflation portion. The inflation portion includes an elastic pneumatic tire 45, which is connected to one end of a hose 49. The hose 49 passes through the side wall of the mounting portion 44 and enters the inner side of the mounting portion 44. The other end of the hose 49 is connected to the valve mouth 50.

[0035] The mounting portion 44 is provided with a plurality of limiting holes 46. The support partition 40 is provided with positioning holes that match the limiting holes 46. The positioning holes are provided with spring lock tongues 41. The spring lock tongues 41 include a compression spring and a lock tongue. The bottom of one side of the lock tongue is provided with an inclined surface. One end of the compression spring is fixedly connected to the support partition 40, and the other end of the compression spring is fixedly connected to the lock tongue. The spring lock tongue 41 can be completely retracted into the positioning holes. The mounting portion 44 is connected to a protective shell 47 with an open bottom. The internal space of the protective shell 47 can accommodate the water distribution body 43. The provision of the protective shell 47 can protect the intact water distribution body 43 below, reducing the friction between the intact water distribution body 43 and the filter material 26 when the intact water distribution body 43 moves.

[0036] A receiving groove 51 is set on the top of the water distribution body 43, and the receiving groove 51 receives the regularly coiled rope body 42. The top of the V-shaped filter tank 4 is connected to several fixing rods for bundling the rope body 42. The setting of the fixing rods can facilitate the bundling and fixing of the top end of the rope body 42, avoiding the rope body 42 being buried by the filter material 26 after long-term filtration.

[0037] When replacing the water distributor 27, tie the top end of the rope body 42 of the intact water distributor 27 to the binding rod 48 of the damaged water distributor 27, release the internal gas of the elastic pneumatic tire 45 of the damaged water distributor 27, place the water distribution body 43 of the intact water distributor 27 in the protective shell 47 of the damaged water distributor 27, push up the intact water distributor 27, and the inclined surface of the lock tongue is pushed so that the lock tongue retracts into the positioning hole. When the intact water distributor 27 reaches the specified position, the lock tongue rebounds and extends out of the positioning hole. The lock tongue enters the limiting hole 46 to limit the water distributor 27, and the elastic pneumatic tire 45 of the intact water distributor 27 is inflated with gas to complete the replacement of the water distributor 27. Finally, the damaged water distributor 27 can be pulled out by the rope body 42.

[0038] Working principle: The raw water after adding medicine enters the grid flocculation tank 2 through the water inlet pipe 7 and the jet aeration device 8. The jet aeration device 8 uses the residual water head of the raw water and suddenly accelerates the flow rate when passing through the ejector compression tube to generate negative pressure, bringing air into the fast water flow and mixing it with the raw water, thereby aerating and oxygenating the raw water. The fast water flow is used to eject water to generate many tiny bubbles, and the bubbles move upward to stir the raw water, so that the raw water and the medicine are fully mixed. The water flows sequentially through flocculation reaction balls 16, type A strip screens 17, and type B strip screens 18 (type A strip screens 17 and type B strip screens 18 primarily serve to divide the water flow and alter its velocity, creating a complex flow pattern. This ensures more thorough mixing of the reagent and raw water, resulting in the formation of large floccules. Therefore, two different types of strip screens are sufficient). As the water flows, it is divided into numerous smaller streams, creating a complex flow pattern. Driven by the current, the particles in the water move in an irregular pattern, increasing opportunities for contact between particles, facilitating coagulation and promoting floc formation. Sludge settled during the flocculation process is regularly discharged through a sludge discharge pipe 19. The flocculated water flows through a flat water distribution device 20 and enters the inclined tube sedimentation tank 3.

[0039] Water flows upward in the inclined tube sedimentation tank 3 through the inclined tube filler 22 and the water collecting weir 21 and then flows into the V-shaped filter tank 4 through the water pipe 23. The sludge settled in the inclined tube sedimentation tank 3 is regularly discharged through the sewage pipe.

[0040] The water flowing into the V-shaped filter tank 4 through the water pipe 23 first enters the water distribution tank 24, and the water distribution tank 24 then evenly distributes the water flow above the filter material 26. The clean water filtered by the filter material 26 flows to the external clean water tank through the clean water outlet 29. The first liquid level meter detects the water level of the clean water tank. When the clean water level in the clean water tank reaches a low point, the water inlet electric valve opens to produce clean water. When the clean water level in the clean water tank reaches a high point, the water inlet electric valve closes and the production of clean water is suspended.

[0041] When producing clean water, when the water level in the V-type filter 4 is lower than a specific liquid level, the exhaust device is in the open state. At this time, water is produced normally, the water inlet electric valve 33 is opened, the clean water electric valve 35 is opened, the backwash sewage electric valve 38, the backwash water inlet electric valve 37, and the backwash air inlet electric valve 36 are closed, and the exhaust device is opened.

[0042] After a certain period of filtration, the suspended matter in the gaps of the filter material 26 increases, the water level rises, the exhaust device is closed, and the second liquid level meter synchronously detects that the water level in the V-type filter tank 4 rises to a specific level, and the second liquid level meter controls the backwash process.

[0043] The backwash process sequentially carries out three stages: air washing backwashing, air-water combined backwashing and water washing backwashing. During air washing backwashing, the exhaust device is closed, the water inlet electric valve 33, the clean water electric valve 35 and the backwash water inlet electric valve 37 are closed, and the backwash sewage electric valve 38, the backwash air inlet electric valve 36 and the backwash fan are turned on; during air-water combined backwashing, the exhaust device is closed, the water inlet electric valve 33 and the clean water electric valve 35 are closed, and the backwash sewage electric valve 38, the backwash water inlet electric valve 37 and the backwash pump, the backwash air inlet electric valve 36 and the backwash fan are turned on; during water washing backwashing, the exhaust device is closed, the water inlet electric valve 33, the clean water electric valve 35, the backwash air inlet electric valve 36 and the backwash fan are closed, and the backwash sewage electric valve 38, the backwash water inlet electric valve 37 and the backwash pump are turned on.

[0044] After backwashing is completed, the water level drops and the exhaust device opens to enter the water production process.

[0045] In summary, the present invention provides a drinking water purification device, including a box body, wherein a grid flocculation tank, an inclined tube sedimentation tank and a V-type filter are sequentially arranged inside the box body from left to right, and the arrangement of the grid flocculation tank can facilitate the coagulation and sedimentation of flocculants; the grid flocculation tank and the inclined tube sedimentation tank are both connected to the bent sludge area below, and the bent sludge area is provided with a sludge discharge pipe. The arrangement of the bent sludge area and the sludge discharge pipe can facilitate the discharge of deposited flocculants, and avoid the flocculants from accumulating for a long time inside the grid flocculation tank and the inclined tube sedimentation tank; a mixing area is provided at the front end of the grid flocculation tank, and an inlet pipe is provided in the mixing area, and the inlet pipe is provided with a jet aeration device, and the inlet pipe passes the raw water mixed with air into the bottom of the mixing area, and the jet aeration device can aerate and oxygenate the raw water after the addition of the agent, and at the same time fill the raw water with a certain amount of air, and the raw water passes into the bottom of the mixing area, and the mixed air in the raw water floats up to stir the raw water, which is conducive to fully mixing the raw water and the agent; the grid flocculation tank is connected above the mixing area, and the grid The grid flocculation tank facilitates the sedimentation of floccules formed in the fully mixed raw water. The V-shaped filter is equipped with filter media, a backwash drain trough is located above the filter media, and a backwash outlet is located on one side of the backwash drain trough. The backwash drain trough and backwash outlet facilitate the discharge of water containing suspended matter after backwashing, preventing the suspended matter from re-entering the filter media. Several evenly distributed water distributors are located at the bottom of the filter media. The V-shaped filter is connected to the bent clean water area below through the water distributors. The water distributors ensure that the filtered water flows evenly into the lower bent clean water area, which is conducive to fully utilizing the filter media. The bent clean water area is equipped with a switchable exhaust device, a switchable backwash air inlet, a switchable backwash water inlet, and a switchable clean water outlet. The backwash air inlet and backwash water inlet can respectively enter water and air. The action of air and water alone or in combination can ensure more complete backwashing of the filter media, improve the backwash effect, and prevent the filter media from compacting.

[0046] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art may make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A drinking water purification device, characterized in that: It comprises a box body, wherein a grid flocculation tank, an inclined tube sedimentation tank, and a V-type filter tank are sequentially connected inside the box body from left to right, and the grid flocculation tank and the inclined tube sedimentation tank are both connected to the bent sludge area below; the bent sludge area is provided with a sludge discharge pipe; a mixing area is provided at the front end of the grid flocculation tank; a water inlet pipe is provided in the mixing area; the water inlet pipe is provided with a jet aeration device, and the water inlet pipe passes the raw water mixed with air into the bottom of the mixing area; the top of the mixing area is connected to the grid flocculation tank; The V-shaped filter is provided with filter material; a backwash drain trough is provided above the filter material; a backwash drain outlet is provided on one side of the backwash drain trough; a plurality of evenly distributed water distributors are provided at the bottom of the filter material; the V-shaped filter is connected to the bent clean water area below through the water distributors; the bent clean water area is provided with a switchable exhaust device; the bent clean water area is respectively provided with a switchable backwash air inlet, a switchable backwash water inlet, and a switchable clean water outlet; The water distributor includes a water distribution body and a mounting portion. The upper portion of the water distribution body is connected to one end of a rope body, and the lower portion of the water distribution body is connected to the mounting portion. The mounting portion is detachably mounted at the mounting hole position of the support partition. The outer portion of the mounting portion is provided with an annular inflatable portion. The inner side of the mounting portion is connected to a binding rod. The bent clear water area is provided with an openable inspection port. The mounting portion is provided with a plurality of limiting holes; the supporting partition is provided with positioning holes that cooperate with the limiting holes; the positioning holes are provided with spring lock tongues; the spring lock tongue includes a compression spring and a lock tongue, and the bottom of one side of the lock tongue is provided with an inclined surface; the bottom of the mounting portion is connected to a protective shell with an open bottom; the internal space of the protective shell can accommodate a water distribution body; a receiving groove is provided on the top of the water distribution body, and a regularly coiled rope body is accommodated inside the receiving groove; the top of the V-shaped filter tank is connected to a plurality of fixing rods for bundling the rope body.

2. The drinking water purification device according to claim 1, characterized in that: The grid flocculation tank is provided with a first flocculation tank, a second flocculation tank, a third flocculation tank, a fourth flocculation tank and a fifth flocculation tank in sequence, and the five flocculation tanks are separated by baffles; the bottom of the first flocculation tank is connected to the second flocculation tank, the top of the second flocculation tank is connected to the third flocculation tank, the bottom of the third flocculation tank is connected to the fourth flocculation tank, and the top of the fourth flocculation tank is connected to the fifth flocculation tank; the second flocculation tank is provided with a flocculation reaction ball; the third flocculation tank is provided with an A-type strip grid, and the fourth flocculation tank is provided with a B-type strip grid.

3. The drinking water purification device according to claim 1 or 2, characterized in that: An inclined tube filler is provided in the inclined tube sedimentation tank; a flat water distribution device is provided below the inclined tube filler at the connecting position between the grid flocculation tank and the inclined tube sedimentation tank, and the flat water distribution device is used to evenly distribute water below the inclined tube filler; a water collecting weir is provided above the inclined tube filler; a water flow pipe is provided above the side wall between the inclined tube sedimentation tank and the V-shaped filter, and the water flow pipe is connected to the water collecting weir; a water distribution trough is provided above the V-shaped filter, and the water distribution trough is located below the end of the water flow pipe, and the water distribution trough is used to evenly distribute water above the filter material; the exhaust device is used to discharge gas to the top of the water distribution trough.

4. The drinking water purification device according to claim 1, characterized in that: The water inlet pipe is connected to the water inlet electric valve; the mud discharge pipe is connected to the mud discharge electric valve; the clean water outlet is connected to the clean water electric valve, and the clean water electric valve is connected to the clean water tank; the clean water tank is provided with a first liquid level meter for controlling the operation of the water inlet electric valve to open low and stop high; the backwash sewage outlet is connected to the backwash sewage outlet electric valve; the backwash water inlet is connected to the backwash water inlet electric valve; the backwash water inlet electric valve is connected to the backwash pump; the backwash air inlet is connected to the backwash air inlet electric valve; the backwash air inlet electric valve is connected to the backwash fan.

5. The drinking water purification device according to any one of claims 1, 2 and 4, characterized in that: The exhaust device includes an exhaust pipe and a water level control valve. The bottom end of the exhaust pipe is connected to the top of the bent clear water area, and the exhaust pipe is equipped with a water level control valve.

6. The drinking water purification device according to claim 4, characterized in that: The V-shaped filter tank is provided with a second liquid level meter; the second liquid level meter is electrically connected to the backwash air inlet electric valve and the backwash water inlet electric valve.

7. The drinking water purification device according to claim 1, characterized in that: The mounting portion is provided with a receiving groove; the inflatable portion includes an elastic pneumatic tire; the elastic pneumatic tire is connected to one end of a hose, and the other end of the hose is connected to an air valve; the hose passes through the side wall of the mounting portion and enters the inner side of the mounting portion.

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