Integrated water purification equipment with automatic backwashing function

Abstract

The utility model discloses integrated water purification equipment with an automatic backwashing function, which comprises a control system, a backwashing siphon and a filter chamber, the backwashing siphon comprises an upper pipe and a lower pipe, the upper pipe is sleeved outside the upper section of the lower pipe, the upper end of the upper pipe is provided with a liquid level switch, the lower end of the upper pipe is hermetically connected with the outer wall of the middle part of the lower pipe, and the filter chamber is connected with the control system. A three-way change-over valve is further arranged at the top of the upper pipe of the backwashing siphon, three ports of the three-way change-over valve are communicated with the upper end of the backwashing siphon, an output port of the vacuum pump and the outside respectively, and an input port of the vacuum pump is communicated with the filter chamber through a water injection electromagnetic valve; the three-way change-over valve, the vacuum pump, the water injection electromagnetic valve and the liquid level switch are electrically connected with the control system. According to the water purification equipment, the blockage degree of the filter material layer is judged through the water level in the backwashing siphon, and when a liquid level switch signal is switched on, the three-way change-over valve and the vacuum pump are controlled by the control system to start for forced backwashing, or regular forced backwashing can be set.

Description

Technical Field

[0001] The utility model relates to an integrated water purification device, in particular to an integrated water purification device with an automatic backwashing function. Background Art

[0002] There are various integrated water purification equipment on the market. Most of them require manual operation to achieve the water purification function, which makes it impossible to truly realize intelligent backwashing, and it is impossible to control and distinguish the backwashing order of each siphon tube, so that the water supply effect cannot be guaranteed, resulting in a large amount of water resource waste. At the same time, there is no consideration of regular forced backwashing to keep the sand layer flux and avoid compaction.

[0003] Chinese patent number ZL201921916039.2 disclosed a non-powered backwash integrated water purifier on June 30, 2020, including a housing, the housing including a flocculation reaction tank and an inclined tube sedimentation tank connected at the bottom, a water storage chamber and a sand filter tank with filter material are arranged on the side of the inclined tube sedimentation tank away from the flocculation reaction tank, an emptying chamber is arranged at the bottom of the water storage chamber, a water outlet pipe is arranged at the top of the inclined tube sedimentation tank, a first siphon and a second siphon are vertically arranged on the side wall of the water storage chamber, the first siphon is connected to the sand filter tank through a connecting pipe, and an air destruction pipe is arranged between the top of the first siphon and the sand filter tank. This structure cannot realize the control of backwashing at any time, and has the above-mentioned shortcomings. Utility Model Content

[0004] The utility model aims to provide an integrated water purification device with a reasonable structure, forced backwashing and automatic backwashing function.

[0005] The purpose of the utility model is achieved in this way:

[0006] An integrated water purification device with automatic backwashing function comprises a control system, a backwash siphon and a filter chamber, wherein the backwash siphon comprises an upper tube and a lower tube, the upper tube is sleeved outside the upper section of the lower tube, a liquid level switch is arranged at the upper end of the upper tube, the lower end of the upper tube is sealedly connected to the middle outer wall of the lower tube, and the lower end of the lower tube is located below the filter chamber, a three-way conversion valve is also arranged at the top of the upper tube of the backwash siphon, three ports of the three-way conversion valve are respectively connected to the upper end of the backwash siphon, the output port of a vacuum pump and the outside, the input port of the vacuum pump is connected to the filter chamber through a water injection solenoid valve, and the three-way conversion valve, the vacuum pump, the water injection solenoid valve and the liquid level switch are respectively electrically connected to the control system.

[0007] The purpose of the utility model can also be solved by the following technical measures:

[0008] As a more specific scheme, it also includes a coagulation tank, a clarification sedimentation tank and a filter tank which are connected in sequence. The upper end of the coagulation tank is provided with a water inlet, and the inner lower part of the filter box is provided with more than two filter chambers. Each filter chamber is equipped with a corresponding backwash siphon, and the upper end of each backwash siphon is connected to the output port of the vacuum pump through a corresponding three-way conversion valve; the upper end of the filter box is provided with a water outlet, and the water outlet is lower than the upper end height of the backwash siphon.

[0009] As a further solution, the upper end of the clarification sedimentation tank is connected to the filter chamber through a U-shaped tube, and a water inlet electric valve is provided on the U-shaped tube, and the water inlet electric valve is electrically connected to the control system. During backwashing, the water inlet electric valve is controlled to be closed.

[0010] As a further solution, a mud discharge pipe is provided at the bottom of the coagulation tank and the clarification sedimentation tank, and a mud discharge electric valve is provided on the mud discharge pipe, and the mud discharge electric valve is electrically connected to the control system. The control system can regularly control the mud discharge electric valve to open to achieve silt removal.

[0011] As a further solution, a water storage chamber and an emptying chamber are respectively provided at the upper and lower parts of the filter chamber in the filter box, the filter chamber includes an upper partition, a connecting pipe, a filter material layer and a lower mesh plate, the connecting pipe runs through the upper partition and the lower mesh plate, and connects the water storage chamber and the emptying chamber, the filter material layer is arranged between the upper partition and the lower mesh plate, a cavity is arranged between the filter material layer and the upper partition, the U-shaped pipe leads to the cavity, the lower end of the upper pipe of the backwash siphon pipe is connected to the cavity through a bypass pipe, and the water injection solenoid valve is connected to the cavity through a water injection pipe. The water in the clarified sedimentation tank enters the filter chamber through the U-shaped pipe, enters the emptying chamber after filtration, and then enters the water storage chamber through the connecting pipe, and finally is discharged from the water outlet above the water storage chamber.

[0012] As a further solution, a first manual valve is provided on the water injection pipe, and the water injection solenoid valve is also connected in parallel with a second manual valve. The first manual valve is normally in an open state. When the water injection solenoid valve and the vacuum pump need to be repaired, the first manual valve is manually closed to prevent the water in the filter chamber from being discharged from the water injection pipe. The second manual valve is normally in a closed state. When the water injection solenoid valve fails and cannot be opened, the second manual valve can be manually opened.

[0013] As a further solution, the three-way conversion valve is connected to the upper end of the lower pipe of the backwash siphon pipe.

[0014] As a further solution, the side wall of the filter box corresponding to the filter chamber is provided with an inspection port, and the side wall of the filter box corresponding to the emptying chamber is provided with an emptying port.

[0015] As a further solution, the control system is provided with a remote communication module to facilitate remote operation and monitoring.

[0016] The beneficial effects of the utility model are as follows:

[0017] (1) This water purification equipment determines the degree of clogging of the filter layer by the water level in the backwash siphon. When the liquid level switch signal is turned on, the control system controls the three-way conversion valve and the vacuum pump to start forced backwashing. Alternatively, regular forced backwashing can be set.

[0018] (2) When multiple filter chambers of this water purification equipment need to be backwashed, the control system backwashes the filter chambers in sequence according to the set order, realizing the automation and intelligence of the equipment to control the backwashing order, backwashing time and interval time of multiple filter chambers (filter chambers), so that the water resources in the water storage room can be effectively used when backwashing the filter chambers. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of an embodiment of the utility model.

[0020] Figure 2 It is a schematic diagram of a local enlarged and cross-sectional structure.

[0021] Figure 3 This is a schematic diagram of the front waterway structure of the utility model. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0023] See also Figures 1 to 3 As shown, an integrated water purification device with automatic backwashing function includes a control system 1, a backwash siphon 2 and a filter chamber 95, the backwash siphon 2 includes an upper tube 21 and a lower tube 22, the upper tube 21 is sleeved on the upper section of the lower tube 22, a liquid level switch 4 is provided at the upper end of the upper tube 21, the lower end of the upper tube 21 is sealed and connected to the middle outer wall of the lower tube 22, and the lower end of the lower tube 22 is located below the filter chamber 95, and a three-way conversion valve 5 is also provided on the top of the upper tube 21 of the backwash siphon 2, the three ports of the three-way conversion valve 5 are respectively connected to the upper end of the backwash siphon 2, the output port of the vacuum pump 3 and the outside, the input port of the vacuum pump 3 is connected to the filter chamber 95 through the water injection solenoid valve 6, and the three-way conversion valve 5, the vacuum pump 3, the water injection solenoid valve 6 and the liquid level switch 4 are respectively electrically connected to the control system 1.

[0024] It also includes a coagulation tank 7, a clarification sedimentation tank 8 and a filter box 9 which are connected in sequence. A water inlet 71 is provided at the upper end of the coagulation tank 7. Three filter chambers 95 are arranged horizontally at the inner lower part of the filter box 9. Each filter chamber 95 is equipped with a corresponding backwash siphon 2 (respectively A1, A2, and A3). The upper end of each backwash siphon 2 is connected to the output port of the vacuum pump 3 through a corresponding three-way conversion valve 5; a water outlet 91 is provided at the upper end of the filter box 9, and the water outlet 91 is lower than the upper end height of the backwash siphon 2.

[0025] The upper end of the clarification sedimentation tank 8 is connected to the filter chamber 95 through a U-shaped tube 81 . A water inlet electric valve 82 is provided on the U-shaped tube 81 . The water inlet electric valve 82 is electrically connected to the control system 1 .

[0026] A mud discharge pipe 72 is provided at the bottom of the coagulation tank 7 and the clarification sedimentation tank 8 . A mud discharge electric valve 73 is provided on the mud discharge pipe 72 . The mud discharge electric valve 73 is electrically connected to the control system 1 .

[0027] A water storage chamber 92 and an emptying chamber 97 are respectively provided at the upper and lower parts corresponding to the filter chamber 95 in the filter box 9. The filter chamber 95 includes an upper partition plate 98, a connecting pipe 94, a filter material layer 96 and a lower mesh plate 99. The connecting pipe 94 passes through the upper partition plate 98 and the lower mesh plate 99 and connects the water storage chamber 92 and the emptying chamber 97. The filter material layer 96 is arranged between the upper partition plate 98 and the lower mesh plate 99. A cavity is provided between the filter material layer 96 and the upper partition plate 98. The U-shaped tube 81 leads to the cavity. The lower end of the upper tube 21 of the backwash siphon tube 2 is connected to the cavity through a bypass pipe 93, and the water injection solenoid valve 6 is connected to the cavity through a water injection pipe.

[0028] The water injection pipe is provided with a first manual valve 61 , and the water injection solenoid valve 6 is also connected in parallel with a second manual valve 62 .

[0029] The three-way conversion valve 5 is connected to the upper end of the lower pipe 22 of the backwash siphon pipe 2 .

[0030] The filter box 9 is provided with an inspection port on the side wall corresponding to the filter chamber 95 , and the filter box 9 is provided with an emptying port on the side wall corresponding to the emptying chamber 97 .

[0031] Its working principle is: after the filter layer 96 has been filtering for a period of time, the head loss gradually increases due to the continuous interception of suspended impurities by the filter layer 96, and the water level in the backwash siphon 2 rises until it reaches the liquid level switch 4 near the top of the backwash siphon 2. When the signal of the liquid level switch 4 is turned on, the control system 1 controls the vacuum pump 3 to perform vacuum forced backwashing, and automatically analyzes and compares the data, performs logical operations, and controls the start and stop of the backwash action and the backwash order of each filter chamber.

[0032] Specifically, when the liquid level of the backwash siphon 2 contacts the high liquid level of the liquid level switch 4, the trigger signal is fed back to the control system 1 (PLC), the water injection solenoid valve 6 (normally closed) and the three-way conversion valve 5 are opened, the vacuum pump 3 is started, the water inlet electric valve 82 is closed, and the filter chamber is automatically backwashed (the time is 5 minutes, and the time is adjustable). When the backwash is completed, the signal is fed back to the control system 1 (PLC), the vacuum pump 3 is stopped, the water injection solenoid valve 6 (normally closed) and the three-way conversion valve 5 are closed, and the water inlet electric valve 82 is opened.

[0033] When the filter chambers need to be backwashed at the same time, after one of the filter chambers is backwashed, the remaining filter chambers are backwashed in the order set by the backwash siphon 2 (such as backwashing in the order of A1-A2-A3) with an interval time (30 minutes time is adjustable to avoid incomplete backwashing at the same time).

[0034] Timed forced backwash: (forced backwash is performed once a day, the time is adjustable).

[0035] Regular mud discharge (drain mud once a day, and the time of mud discharge is adjustable).

[0036] Manual backwashing: open the water injection solenoid valve 6 and the three-way conversion valve 5, start the vacuum pump 3, close the water inlet electric valve 82, and backwash each filter chamber in sequence.

[0037] The above is a preferred embodiment of the utility model, which shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. The utility model may have various changes and improvements without departing from the spirit and scope of the utility model, and these changes and improvements fall within the scope of the utility model to be protected, and the scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. An integrated water purification device with automatic backwashing function, comprising a control system (1), a backwashing siphon (2) and a filter chamber (95), wherein the backwashing siphon (2) comprises an upper tube (21) and a lower tube (22), wherein the upper tube (21) is sleeved outside the upper section of the lower tube (22), a liquid level switch (4) is provided at the upper end of the upper tube (21), the lower end of the upper tube (21) is sealedly connected to the middle outer wall of the lower tube (22), and the lower end of the lower tube (22) is located below the filter chamber (95), characterized in that: A three-way conversion valve (5) is also provided at the top of the upper tube (21) of the backwash siphon pipe (2); the three ports of the three-way conversion valve (5) are respectively connected to the upper end of the backwash siphon pipe (2), the output port of the vacuum pump (3) and the outside world; the input port of the vacuum pump (3) is connected to the filter chamber (95) via a water injection solenoid valve (6); the three-way conversion valve (5), the vacuum pump (3), the water injection solenoid valve (6) and the liquid level switch (4) are respectively electrically connected to the control system (1).

2. The integrated water purification device with automatic backwashing function according to claim 1 is characterized in that: It also includes a coagulation box (7), a clarification sedimentation box (8) and a filter box (9) which are connected in sequence. The upper end of the coagulation box (7) is provided with a water inlet (71). The inner lower part of the filter box (9) is provided with more than two filter chambers (95). Each filter chamber (95) is equipped with a corresponding backwash siphon (2). The upper end of each backwash siphon (2) is connected to the output port of the vacuum pump (3) through a corresponding three-way conversion valve (5). The upper end of the filter box (9) is provided with a water outlet (91), and the water outlet (91) is lower than the upper end of the backwash siphon (2).

3. The integrated water purification device with automatic backwashing function according to claim 2 is characterized in that: The upper end of the clarification sedimentation tank (8) is connected to the filter chamber (95) via a U-shaped tube (81), and a water inlet electric valve (82) is provided on the U-shaped tube (81), and the water inlet electric valve (82) is electrically connected to the control system (1).

4. The integrated water purification device with automatic backwashing function according to claim 2 is characterized in that: A mud discharge pipe (72) is provided at the bottom of the coagulation tank (7) and the clarification sedimentation tank (8), and a mud discharge electric valve (73) is provided on the mud discharge pipe (72). The mud discharge electric valve (73) is electrically connected to the control system (1).

5. The integrated water purification device with automatic backwashing function according to claim 3 is characterized in that: The filter box (9) is provided with a water storage chamber (92) and an emptying chamber (97) at the upper and lower parts corresponding to the filter chamber (95), respectively. The filter chamber (95) comprises an upper partition plate (98), a connecting pipe (94), a filter material layer (96) and a lower mesh plate (99). The connecting pipe (94) penetrates the upper partition plate (98) and the lower mesh plate (99) and connects the water storage chamber (92) and the emptying chamber (97). The filter material layer (96) is arranged between the upper partition plate (98) and the lower mesh plate (99). A cavity is provided between the filter material layer (96) and the upper partition plate (98). The U-shaped pipe (81) leads to the cavity. The lower end of the upper pipe (21) of the backwash siphon pipe (2) is connected to the cavity through a bypass pipe (93). The water injection solenoid valve (6) is connected to the cavity through the water injection pipe.

6. The integrated water purification device with automatic backwashing function according to claim 5, characterized in that: The water injection pipe is provided with a first manual valve (61), and the water injection solenoid valve (6) is also connected in parallel with a second manual valve (62).

7. The integrated water purification device with automatic backwashing function according to claim 1 is characterized in that: The three-way conversion valve (5) is connected to the upper end of the lower tube (22) of the backwash siphon tube (2).

8. The integrated water purification device with automatic backwashing function according to claim 5 is characterized in that: The filter box (9) is provided with an inspection port on the side wall corresponding to the filter chamber (95), and the filter box (9) is provided with an emptying port on the side wall corresponding to the emptying chamber (97).

9. The integrated water purification device with automatic backwashing function according to claim 1, characterized in that: The control system (1) is provided with a remote communication module.

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