Automatic filtering and cleaning system for bathing wastewater

Abstract

The utility model discloses an automatic filtering and cleaning system for bathing wastewater, which comprises a filtering water tank, a filtering net and a wastewater tank, the filtering water tank is divided into a filtering area and a non-filtering area by the filtering net, a liquid level sensor A is arranged in the non-filtering area, the outer side of the non-filtering area is connected with a bathing wastewater conveying pipe and a blow-off pipe, the blow-off pipe is provided with a stop valve D, and the stop valve D is connected with the wastewater tank. A liquid level sensor B, a submersible pump A, a cleaning nozzle A and a cleaning nozzle B are fixed in the filtering area, the cleaning nozzle A is connected with a tap water supply point pipeline, and a stop valve A is mounted on the pipeline; the submersible pump A is in pipeline connection with the waste water tank, a stop valve B is arranged on the pipeline, the cleaning nozzle B is in pipeline connection with the stop valve B, and a stop valve C is arranged on the connecting pipeline; and the liquid level sensor A, the liquid level sensor B, the stop valve A, the stop valve B, the stop valve C and the stop valve D are respectively connected with a central controller of the system.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of bathing wastewater recycling, and particularly relates to an automatic filtering and cleaning system for bathing wastewater. BACKGROUND

[0002] Low-grade waste heat in bathing wastewater can be used as a heat source for a water source heat pump water heater to produce domestic hot water, but the wastewater after bathing contains hair and dirt, which can easily block the wastewater passage of the water source heat pump unit in the water source heat pump water heater, so the wastewater must be filtered before entering the water source heat pump unit. Currently, there are two main types of traditional filtering methods: one type is an automatic filter containing a complex cleaning device driven by a motor, which generally requires a high pressure and is unstable due to many mechanical moving parts, and in addition, the cost is high due to the large volume of the closed pressure-bearing structure. The other type is to use a simple filter screen, filter basket or filter bag, which can be large in size and low in cost, but still requires frequent manual cleaning and cannot be automatically operated, which is very inconvenient, and in addition, the open structure is used for easy cleaning, and the wastewater temperature drops more. CONTENT OF THE UTILITY MODEL

[0003] To solve the above technical problems, the utility model provides an automatic filtering and cleaning system for bathing wastewater, which is provided with a few stop valves and spray heads to form a two-way backwashing channel, which can backwash while working to clean the blockage in time, and can be thoroughly cleaned and discharged after bathing to work reliably for a long time, and the system is simple, low in cost, fully automatic, and greatly reduces the labor burden.

[0004] The technical scheme provided by the utility model is as follows:

[0005] An automatic filtering and cleaning system for bathing wastewater comprises a filtering water tank, a filter screen and a wastewater tank, the filter screen divides the filtering water tank into a filtering area and a non-filtering area, a liquid level sensor A is arranged in the non-filtering area, a bathing wastewater conveying pipe and a sewage discharge pipe are connected to the outside of the non-filtering area, a stop valve D is arranged on the sewage discharge pipe, a liquid level sensor B, a submersible pump A, a cleaning spray head A and a cleaning spray head B are fixed in the filtering area, the cleaning spray head A is connected to a tap water supply point pipe, and a stop valve A is arranged on the pipe; the submersible pump A is connected to the wastewater tank pipe, a stop valve B is arranged on the pipe, the cleaning spray head B is connected to the stop valve B pipe, and a stop valve C is arranged on the connecting pipe; the liquid level sensor A, the liquid level sensor B, the stop valve A, the stop valve B, the stop valve C and the stop valve D are connected to the central controller of the system.

[0006] Preferably, the filtering water tank and the wastewater tank are wrapped with polyurethane thermal insulation material.

[0007] Preferably, there is also a submersible pump B fixed in the filtering area, connected with the wastewater tank pipeline, and a stop valve E arranged on the pipeline, the stop valve E being arranged between the stop valve C and the stop valve B, and the stop valve E being connected with the central controller of the system.

[0008] Preferably, the filtering screen can be circular arc-shaped or straight face-shaped.

[0009] Preferably, the filtering water tank can be circular or square.

[0010] Preferably, the vertical pipe and the horizontal pipe are wrapped with heat preservation materials.

[0011] Preferably, the cleaning spray head A and the cleaning spray head B are rotatable.

[0012] Preferably, the filtering screen is fixed in the filtering water tank through a fixing plate, and the filtering screen and the fixing plate are detachable.

[0013] Preferably, the filtering water tank is provided with a top cover which can be opened, and the top cover is provided with an exhaust hole.

[0014] Compared with the prior art, the utility model has the following technical advantages:

[0015] (1) The utility model is a non-pressure closed structure, has good heat preservation effect, has no complex cleaning motor and brush structure, and only relies on two reverse flushing channels, can be backflushed while working to clean the blockage in time, can be thoroughly cleaned and discharged after bathing, can work reliably for a long time, is simple in system, low in cost, can be completely automatically operated, and greatly reduces the artificial burden.

[0016] (2) The utility model has simple structure, is easy to produce, is easy to maintain in later period, can be used for wastewater of bathing, can be used for similar textile printing and dyeing, food slaughtering, electronics and other scenes with wastewater filtering demand, and has good application prospect. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic view of the utility model

[0018] Among them: 1, submersible pump A 2, submersible pump B 3, cleaning spray head A 4, cleaning spray head B 5, filtering screen 6, liquid level sensor A 7, filtering water tank 8, polyurethane heat preservation layer 9, stop valve A 10, stop valve B 11, stop valve C 12, stop valve D 13, stop valve E 14, heat preservation vertical pipe 15, heat preservation horizontal pipe 16, blowdown pipe 17, fixing plate 18, liquid level sensor B 19, heat preservation wastewater pipe 20, wastewater tank. DETAILED DESCRIPTION

[0019] The utility model will be further described in connection with the drawings and specific embodiments.

[0020] As Figure 1 The utility model discloses a bath wastewater automatic filtration and cleaning system, including filter water tank 7, filter screen 5, wastewater tank 20, filter screen 5 divides filter water tank 7 into filtration area and non filtration area, is equipped with liquid level sensor A6 in non filtration area, and the outside of non filtration area is connected with bath wastewater delivery pipe and blow-off pipe 16, is installed on stop valve D12 of blow-off pipe 16, and bath wastewater delivery pipe is composed of heat preservation vertical pipe 14 and heat preservation cross pipe 15, is fixed with liquid level sensor B18, submersible pump A1, cleaning spray head A3 and cleaning spray head B4 in filtration area, and cleaning spray head A3 and cleaning spray head B4 can rotate, and cleaning spray head A3 is connected with tap water supply point pipeline, and is equipped with stop valve A9 on the pipeline, and submersible pump A1 is connected with wastewater tank 20 pipeline, is equipped with stop valve B10 on the pipeline, and cleaning spray head B4 is connected with stop valve B10 pipeline, and is equipped with stop valve C11 on the connecting pipeline, and liquid level sensor A6, liquid level sensor B18, stop valve A9, stop valve B10, stop valve C11, stop valve D12 are connected with the central controller of system respectively.

[0021] In the utility model, the outer side of filter water tank 7 and wastewater tank 20 is equipped with polyurethane heat preservation layer 8.

[0022] The utility model also is equipped with a set of spare cleaning device, is composed of submersible pump B2 and stop valve E13, and submersible pump B2 is fixed in filtration area, and is connected with wastewater tank 20 pipeline, and is equipped with stop valve E13 on the pipeline, and stop valve E13 is arranged between stop valve C11 and stop valve B10, and stop valve E13 is connected with the central controller of system.

[0023] In addition, the filter screen 5 in the utility model can be circular arc or straight face shape. The filter water tank 7 can also be circular or square. The filter screen 5 is fixed inside the filter water tank 7 through the fixed plate 17, and the filter screen 5 and the fixed plate 17 are detachable. The bath wastewater does not pass through the fixed plate 17.

[0024] The filter water tank 7 is provided with a top cover on the top. The top cover can be opened. The top cover is provided with an exhaust hole.

[0025] The operation mode and control method of the utility model are as follows:

[0026] (1) Normal filtration mode: the user bath wastewater flows into the filter water tank through the bath wastewater delivery pipe, and the wastewater is filtered by the filter screen and transferred to the wastewater tank by the submersible pump A through the heat preservation wastewater pipe.

[0027] (2) Synchronous cleaning mode during work:

[0028] The central controller reads the unfiltered wastewater level from level sensor A, denoted as h1, and the filtered wastewater level from level sensor B, denoted as h2;

[0029] Start condition: start when h1-h2>a and h2>b, the values of a and b are determined according to the height of the filter tank and the water inlet height of the submersible pump, generally a is 20-100 mm and b is 200-500 mm;

[0030] Work flow: valve C is open, valve E is closed, submersible pump B is started, wastewater is sprayed through valve C, cleaning pipe, and cleaning nozzle B to flush the filter screen, and after working for 30-60 seconds (user can set), it is closed;

[0031] (3) Working sewage mode

[0032] Start condition: start when mode two exceeds the user's set number of times within a fixed time, or when h1-h2>c, generally c is greater than 100 mm, preferably 100-200 mm;

[0033] Work flow: valve D is opened, wastewater and dirt flow into the building underground drainage pipe through the sewage pipe, valve A is opened, tap water is sprayed through the cleaning pipe and cleaning nozzle A to flush the filter screen, and after working for 30-60 seconds (user can set), valve A and valve D are closed in turn;

[0034] (4) Non-working sewage mode:

[0035] Start condition: for a 24-hour water supply system, when the submersible pumps are both off and h2<50 mm and the duration exceeds 10-60 minutes (user can set), start, and do not start again within 24 hours after each start; for a timed water supply system, start once after the water supply pump stops supplying water for 30 minutes;

[0036] Work flow: valve D is opened, wastewater and dirt flow into the building underground drainage pipe through the sewage pipe, valve A is opened, tap water is sprayed through the cleaning pipe and cleaning nozzle A to flush the filter screen, and after working for 30-300 seconds (user can set), valve A and valve D are closed in turn;

[0037] (5) Mode five: standby pump mode:

[0038] When submersible pump A fails, use submersible pump B instead, valve C and valve B are closed, and valve E is open.

[0039] It should be noted that when the wastewater is relatively clean and clean, it generally does not block during work, and only needs to be cleaned during non-working hours every day, so submersible pump B can be cancelled, and the system only works in mode (1) and mode (4) two working modes.

Claims

1. A bathing wastewater automatic filtering and cleaning system, comprising a filtered water tank, a filter screen, a wastewater tank, characterized in that: The filter screen divides the filter water tank into a filtering area and a non-filtering area, the non-filtering area is provided with a liquid level sensor A, the non-filtering area is connected with a bathing wastewater conveying pipe and a sewage pipe outside, the sewage pipe is provided with a stop valve D, the filtering area is fixed with a liquid level sensor B, a submersible pump A, a cleaning nozzle A and a cleaning nozzle B, the cleaning nozzle A is connected with a tap water supply pipe, and the tap water supply pipe is provided with a stop valve A; the submersible pump A is connected with a wastewater tank pipe, and the pipe is provided with a stop valve B; the cleaning nozzle B is connected with the stop valve B, and the connecting pipe is provided with a stop valve C; the liquid level sensor A, the liquid level sensor B, the stop valve A, the stop valve B, the stop valve C and the stop valve D are connected with a central controller of the system.

2. A bathing wastewater automatic filtering and cleaning system according to claim 1, characterized in that: The filter water tank and the wastewater tank are wrapped with polyurethane heat preservation materials outside.

3. The automatic bathing wastewater filtering and cleaning system according to claim 1, wherein: The system further comprises a submersible pump B and a stop valve E, the submersible pump B is fixed in the filtering area and connected with a wastewater tank pipe, the pipe is provided with the stop valve E, the stop valve E is arranged between the stop valve C and the stop valve B, and the stop valve E is connected with the central controller of the system.

4. The automatic bathing wastewater filtering and cleaning system according to claim 1, wherein: The filter screen can be a circular arc shape or a straight surface shape.

5. The automatic bathing wastewater filtering and cleaning system according to claim 1, wherein: The filter water tank can be circular or square.

6. The automatic bathing wastewater filtering and cleaning system according to claim 1, wherein: The vertical pipe and the horizontal pipe are wrapped with heat preservation materials outside.

7. The automatic bathing wastewater filtering and cleaning system according to claim 1, wherein: The cleaning nozzle A and the cleaning nozzle B are rotatable.

8. The automatic bathing wastewater filtering and cleaning system according to claim 1, wherein: The filter screen is fixed in the filter water tank through a fixing plate, and the filter screen and the fixing plate are detachable.

9. The automatic bathing wastewater filtering and cleaning system according to claim 1, wherein: The filter water tank is provided with a top cover, the top cover is openable, and the top cover is provided with an exhaust hole.

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