CN211690580U - Automatically cleaning water tank with controlling means of intaking - Google Patents

Abstract

The utility model discloses a self-cleaning water tank with a water inlet control device, which comprises a water tank body, wherein the water tank body is formed by splicing a plurality of water storage tank bodies, each water storage tank body is formed by assembling a plurality of water storage tanks, the water tank body is formed by a plurality of water storage tanks through a channel steel bracket, the lower bottom surface of the water tank body is provided with a basic platform, spray pipes are arranged inside the upper end surface of the water storage tank body, the spray pipes extend out of the water storage tank body, the spray pipes extending out of the water storage tank body are connected with water inlet pipes, electromagnetic valves are arranged on the spray pipes extending out of the water storage tank body, the water inlet pipes are connected with the water storage tank body through electric valves, the two side, the overflow pipe in the water tank body is provided with a drain pipe, the water tank body is connected with a water pipe, the water pipe is connected with a water outlet main pipe, and the water outlet main pipe is connected with a water inlet main pipeline through a water outlet bent pipe. The utility model discloses its reasonable in design, the people's of being convenient for operation has fine clearance and washing, can satisfy the user demand more.

Description

Automatically cleaning water tank with controlling means of intaking

Technical Field

The utility model relates to a water treatment facilities technical field especially relates to a automatically cleaning water tank with controlling means of intaking.

Background

It is known that in residential areas, there are installed water tanks in which water is stored in order to prevent the water from being used urgently. However, most of the water tanks are used for emergency, but the water tanks are simple in structure and cannot be cleaned due to large volume, and the water tanks are also used for domestic water, so that the water tanks need to be cleaned and cleaned, pollution is avoided, and meanwhile, the water tanks are large in volume and not beneficial to installation of people, time and labor are wasted, installation cost is increased, and therefore improvement on the prior art is needed.

Disclosure of Invention

To the defect among the prior art, the utility model provides a automatically cleaning water tank with controlling means of intaking, its reasonable in design, people's of being convenient for operation has fine clearance and washing, can improve quality of water, avoids receiving the pollution, improves domestic water's factor of safety, and its people's of being convenient for installation has the input of cost is reduced simultaneously.

In order to realize the purpose, the utility model adopts the technical scheme that:

a self-cleaning water tank with a water inlet control device comprises a water tank body, wherein the water tank body is formed by splicing a plurality of water storage tank bodies into a whole, each water storage tank body is formed by assembling a plurality of water storage tanks, the plurality of water storage tanks form the water tank body through a channel steel bracket, and a basic platform is arranged on the lower bottom surface of the water tank body; the inner part of the upper end face of the water storage tank body is provided with a spray pipe, the spray pipe extends out of the water storage tank body, the spray pipe extending out of the water storage tank body is connected with a water inlet pipe, the spray pipe extending out of the water storage tank body is provided with an electromagnetic valve, the water inlet pipe is connected with the water storage tank body through an electric valve, and a glass sight glass filter, a pressure sensor and a flowmeter are arranged on the water inlet pipe; the both sides terminal surface of water storage tank all is provided with people's ladder and overflow pipe, installs overflow liquid level electrode and gravity reset valve on the overflow pipe, is provided with the drain pipe on the overflow pipe of water tank inside, and the water tank is connected with the water pipe, and the water pipe is connected with the total pipeline of intaking, and the total pipeline of intaking is connected with the water outlet main, and the total pipeline of intaking passes through the return bend with the water outlet main and is connected.

The water tank body is formed by splicing two water storage tank bodies into a whole, namely a left water storage tank body and a right water storage tank body, the water storage tank body is formed by assembling nine water storage tanks, and the nine water storage tanks are distributed in a 3 multiplied by 3 arrangement. The design is more favorable for assembling the water tank body, so that the emergency water in residential areas of residential areas can be used, the capacity is large, and the installation of people is facilitated.

And a manhole is arranged on the water tank body at the upper part of the ladder. The manhole is located the tank body up end to be favorable to the artifical maintenance and the detection on the spot of being convenient for, can discover and solve hidden danger problem (inside equipment leaks etc.) through the field of arriving on the spot.

The water tank body is arranged on the channel steel bracket, and is more favorable for mounting and fixing the water tank body.

The water outlet main pipe is provided with a pressure gauge, a two-way needle valve and an overpressure protector, the water outlet elbow is provided with a stainless steel multistage centrifugal pump, a butterfly valve, a flexible rubber joint and a check valve are arranged between the water outlet elbow and the water outlet main pipe, and the water inlet main pipe is provided with a water shortage protector. The design is more beneficial to water outlet and water inlet,

the lower surface of the stainless steel multistage centrifugal pump is provided with a base, a diaphragm air pressure tank is arranged on the base and connected with a water outlet bent pipe, and the base is made of 12# channel steel. The stainless steel multistage centrifugal pump is more favorable for being installed, and the water tank is favorable for moisture prevention and damp prevention through the base due to the fact that the water tank is humid in environment, and the service life of equipment is prolonged.

The lower surface of the water outlet main pipe is provided with an air pressure tank connecting hose and a stainless steel blow-off pipe, the air pressure tank is connected through the air pressure tank connecting hose, the leakage with small flow rate in a pipe network can cause the pressure to be greatly reduced, the water outlet main pipe can be pressurized, the water utilization of residents is facilitated, meanwhile, the stainless steel blow-off pipe can be more beneficial to discharging sewage in a water tank, and a ball valve is arranged on the stainless steel blow-off pipe, so that the stainless steel blow-off pipe is convenient to control.

Be provided with permeability cell and signal of telecommunication pipe on the water tank body, make things convenient for inside more and breathe freely, the signal of telecommunication line is installed to the signal of telecommunication in the pipe to be favorable to the installation of the signal of telecommunication line more, avoid mixed and disorderly.

The overflow alarm device is characterized in that a liquid level sensor (a liquid level floating ball and other water level monitoring devices) is arranged in the water storage tank, the overflow alarm device is installed on the overflow pipe, the liquid level sensor and the overflow alarm device are connected with a PLC (programmable logic controller), and the PLC sends alarm short messages to a mobile phone of a manager through a GSM (global system for mobile communications) network, so that the situation that the water storage tank is flooded is favorably prevented, and monitoring and supervision of people are facilitated.

The utility model has the advantages that: compared with the prior art, the utility model discloses a water tank body, the water tank body is spliced into an entirety by a plurality of water storage tank bodies, each water storage tank body is assembled by a plurality of water storage tanks, a plurality of water storage tanks constitute the water tank body through the channel-section steel support, the bottom surface under the water tank body is provided with a basic platform, which is a water storage tank assembled by a plurality of water storage tanks, and a water tank body is formed by splicing a plurality of water storage tanks, so that a suitable water tank body can be installed according to the actual environment size, and the use requirements of people can be met better, and meanwhile, the water tank body is installed and fixed through the channel-section steel support and the basic platform, thereby being more beneficial to fixing; the water storage tank is characterized in that spray pipes are arranged in the upper end face of the water storage tank body, the spray pipes extend out of the water storage tank body, the spray pipes extending out of the water storage tank body are connected with water inlet pipes, electromagnetic valves are arranged on the spray pipes extending out of the water storage tank body, the water inlet pipes are connected with the water storage tank body through electric valves, and a glass sight glass filter, a pressure sensor and a flowmeter are arranged on the water inlet pipes, so that the water storage tank body is cleaned on one hand, and water inlet; the water inlet pipe is connected with a water storage tank body through an electric valve, a glass sight glass filter, a pressure sensor and a flowmeter are arranged on the water inlet pipe, and the glass sight glass filter and the pressure sensor are arranged on the water inlet pipe, so that the water inlet pressure of a pipe network can be monitored and whether the water inlet pipe is blocked or not can be judged; the both sides terminal surface of water storage tank all is provided with people's ladder and overflow pipe, installs overflow liquid level electrode and gravity reset valve on the overflow pipe, is provided with the drain pipe on the overflow pipe of water tank inside, and the water tank is connected with the water pipe, and the water pipe is connected with the total pipeline of intaking, and the total pipeline of intaking is connected with the water outlet manifold, and the total pipeline of intaking passes through the return bend with the water outlet manifold and is connected its reasonable in design, simple structure, the installation of being convenient for.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic side view of the present invention.

Fig. 3 is a schematic view of the top view of the present invention.

Fig. 4 is a schematic view of the spray pipe of the present invention.

Fig. 5 is a schematic view of the overflow pipe of the present invention.

Fig. 6 is a schematic view of the water drain pipe of the present invention.

Detailed Description

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are usually placed in when used, and are only used for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements indicated must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described in detail through the accompanying drawings and embodiments. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the invention and not to limit the scope of the invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

Referring to fig. 1, as shown in the figure, the self-cleaning water tank with the water inlet control device comprises a water tank body 100, wherein the water tank body 100 is installed on a channel steel support 15, the water tank body 100 is formed by splicing a plurality of water storage tank bodies 101 into a whole, each water storage tank body 101 is formed by assembling a plurality of water storage tanks 7, the water tank body 100 is formed by the channel steel support 15 through the plurality of water storage tanks 7, and a base platform 11 is arranged on the lower bottom surface of the water tank body 100. Specifically, the water tank body 100 is formed by splicing two water storage tank bodies 101 into a whole, namely a left water storage tank body and a right water storage tank body, the water storage tank body 101 is formed by assembling nine water storage tanks 7, and the nine water storage tanks 7 are distributed in a 3 × 3 arrangement. The water tank body 100 is provided with a vent pipe 4 and an electric signal pipe 6.

Referring to fig. 1, 2 and 3, a man ladder 1 and an overflow pipe 2 are disposed on both side end surfaces of a water storage tank 101. The water tank body 100 on the upper part of the ladder 1 is provided with a manhole 8. The overflow pipe 2 is provided with an overflow level electrode 32 and a gravity reset valve 12 (shown in figure 5). A drain pipe 14 is provided to the overflow pipe 2 inside the tank body 100. The water tank body 100 is connected with a water pipe 13, the water pipe 13 is connected with a water inlet main pipeline 30, the water inlet main pipeline 30 is connected with a water outlet main pipe 24, the water inlet main pipeline 30 is connected with the water outlet main pipe 24 through a water outlet bent pipe 19, a pressure gauge 22, a two-way needle valve 23 and an overpressure protector 26 are arranged on the water outlet main pipe 24, an air pressure tank connecting hose 25 and a stainless steel blow-off pipe 31 are arranged on the lower surface of the water outlet main pipe 24, and a ball valve 27 is arranged on the stainless steel blow-off pipe 31. A butterfly valve 16, a flexible rubber joint 17 and a check valve 18 are arranged between the water outlet elbow 19 and the water outlet main pipe 24, a stainless steel multistage centrifugal pump 28 is arranged on the water outlet elbow 19, a base 20 is arranged on the lower surface of the stainless steel multistage centrifugal pump 28, a diaphragm air pressure tank 21 is arranged on the base 20, and the diaphragm air pressure tank 21 is connected with the water outlet elbow 19. The base 20 is made of 12# channel steel. The water shortage protector 29 is arranged on the water inlet main pipe 30.

Referring to fig. 3, the inside of the upper end surface of the water storage tank 101 is provided with a shower pipe 5. The spray pipe 5 extends out of the water storage tank body 101, the spray pipe 5 extending out of the water storage tank body 101 is connected with a water inlet pipe 9, and the spray pipe 5 extending out of the water storage tank body 101 is provided with an electromagnetic valve 3. The water inlet pipe 9 is connected to a water storage tank 101 through an electric valve 10, and the water inlet pipe 9 is provided with a glass mirror filter 33, a pressure sensor 34 and a flowmeter 35.

Referring to fig. 4, the diameter DN20 of the orifice of the spray pipe 5, when the electromagnetic valve 3 is opened, the tap water sprays water from the symmetrically arranged spray nozzles crosswise by the pressure of the pipe network itself.

As shown in FIG. 5, an overflow liquid level electrode 32 and a gravity reset valve 12 are mounted on the overflow pipe 2, the gravity reset check valve 12 is arranged at the outlet of the overflow pipe 2, and the overflow liquid level electrode 32 is mounted at a 100mm opening at the upper end of the valve. The working principle of the gravity reset check valve 12 is similar to that of a floor drain, when the overflow pipe 2 overflows with water, the gravity of the water presses the gravity reset check valve 12 to be opened after the liquid level rises to 100mm, the water is discharged from the overflow pipe 2, and after the water is drained, the gravity reset check valve 12 is reset and closed through a spring, so that the water pollution of the water tank 100 caused by the fact that organisms such as mice and insects climb into the water tank 100 through the overflow pipe 2 is fully avoided. Meanwhile, when the water tank body 100 overflows, the overflow liquid level electrode 32 arranged on the overflow pipe 2 also detects the abnormal signal, the abnormal signal is sent to the control system to send out audible and visual alarm, and meanwhile, the GSM short message module sends pump room position information and alarm content to a plurality of managers in a short message mode to inform users of timely eliminating flooding dangerous cases at the first time.

The water storage tank 7 of the utility model has the following requirements: preferably, food-grade stainless steel is adopted, when the water storage tank 7 is welded, the welding material is matched with the material of the water tank, the welding line is subjected to anti-oxidation treatment, and the top of the water storage tank 7 is fully welded and sealed; the water storage tank 7 is independently arranged, and has reasonable structure, smooth inner wall, no burr on the inner tie bar and no leakage. The distance between the water storage tank 7 and a pollution source and between the water storage tank and pollutants is in accordance with the regulation of the existing national standard GB50015 of building water supply and drainage design Specifications; the water storage tank 7 is not adjacent to or below the electric room and the living room; the water storage tank 7 is arranged in a special room which is convenient to maintain, well ventilated and free of ice, the room on the upper layer is not provided with a toilet, a bathroom, a washroom, a kitchen, a sewage treatment room and the like, and the water storage tank 7 and a pipeline which are arranged outside are provided with anti-freezing and heat-insulating measures; when the water storage tank 7 is arranged in parallel with other water storage tanks, the water storage tanks should be provided with independent partition walls; the height of the water storage tank 7 is not more than 3m and not less than 1.5 m; the clear distance between the outer wall of the water storage tank 7 and the wall surface of a building body structure or other pool walls is required to meet the requirements of construction or assembly, the side surface without a pipeline is not required to be less than 0.7m, the side surface provided with the pipeline is not required to be less than 1.0m, the width of a channel between the outer wall of the pipeline and the wall surface of the building body is not less than 0.6m, the distance between the water storage tank 7 and a projecting part of an indoor building is not required to be less than 0.5m, the distance between the top of the water storage tank 7 and a floor slab is not required to be less than 0.8m, a space for people to enter and exit a manhole is reserved as far as possible, the bottom of the water storage tank 7 is required to be overhead and is not less than 0.5m from the ground, and is.

The utility model discloses a water storage tank 7 should establish inlet tube, outlet pipe, overflow pipe, wash-out pipe (as shown in fig. 6, the motorised valve is installed to the wash-out pipe intermediate position), breather pipe, manhole, water level gauge, should have anti-pollution measure to should accord with following regulation:

a. the caliber of the water inlet pipe 9 of the water storage tank 7 is preferably determined by a calculation formula of the hydraulic power of the free outflow of the short pipe according to the average daily flow. When the caliber is determined according to the economic flow rate, in order to reduce the adverse effect of large-flow inflow water on a water meter and peripheral users and ensure that a pool (tank) plays a role in regulation, a flow control device is arranged, and the water inlet pipe 9 is connected above the overflow water level of the water tank body 100;

b. the tube bottom of the water outlet main pipe 24 is higher than the inner bottom of the water tank body 100, and the height difference is not less than 0.1 m;

c. the arrangement of the water inlet pipe and the water outlet pipe can not generate a water flow short circuit, and a flow guide device is arranged if necessary;

d. the water inlet pipe 9 is connected with a water storage tank 101 through an electric valve 10, a glass sight glass filter 33, a pressure sensor 34 and a flowmeter 35 are arranged on the water inlet pipe 9, the glass sight glass filter 33 and the pressure sensor 34 are mounted on the water inlet pipe 9, and the water inlet pressure of a pipe network can be monitored and whether the water inlet pipe 9 is blocked or not can be judged. The water outlet is provided with a liquid level electrode and a water pump chain to prevent the impeller of the water pump from rotating in a dry mode under the condition of water shortage. A liquid level sensor (a liquid level monitoring device such as a liquid level floating ball) is arranged in the water storage tank 7, an overflow alarm device is mounted on the overflow pipe 2, the liquid level sensor and the overflow alarm device are connected with a PLC (programmable logic controller), and the PLC sends an alarm short message to a mobile phone of a manager through a GSM (global system for mobile communications) network, so that the situation that the water storage tank 7 is flooded is prevented, and the monitoring and supervision of people are facilitated;

e. the water inlet of the water storage tank 7 is provided with a remote control ball float valve, and when a direct acting ball float valve is adopted, the number of the ball float valves is not less than two. The water inlet of the water storage tank 7 is preferably provided with an electric valve with a handle, so that the water inlet is limited in the peak time period, and the influence on peripheral users is reduced;

f. the pipe diameter of the overflow pipe 2 is larger than that of the water inlet pipe 9, the side surface vertical welding port is preferably adopted for overflow, and the pipe diameter of a vertical pipe section below the overflow port is determined according to the maximum inflow rate of the drainage water pool (tank) and is preferably larger than that of the water inlet pipe 9 by one step. An ultra-low pressure check valve is arranged at the vertical pipe section of the overflow pipe 2, and the ultra-low pressure check valve is automatically closed when no water flows overflow, so that rats and insects are prevented from entering the overflow pipe. An outlet of the overflow pipe 2 is provided with a corrosion-resistant material protective net which is not directly connected with a drainage system and is provided with an air gap not less than 0.2 m;

g. the bottom of the water storage tank 7 is provided with a diversion trench which collects to the water outlet, when the top sprays, sewage is collected to the water outlet, and the water outlet electric valve is opened for cleaning and pollution discharge. The drain pipe is arranged at the bottom of the diversion trench, the pipe diameter is not less than DN50, and the drain pipe is provided with an electric valve with a handle. The drain pipe must not be directly connected to a drainage structure or a drainage pipe and should have an air gap of not less than 0.2 m. The drain pipe is suitable for being directly led to the upper part of the drainage and water collecting well;

f. the water tank body 100 is provided with a vent pipe 4 and an electric signal pipe 6, the pipe diameter of the vent pipe 4 is not less than DN100, not less than two, and the height difference is suitable, a protective measure is adopted at the opening of the vent pipe 4, and a corrosion-resistant material protective net is arranged;

g. the water tank body 100 at the upper part of the ladder 1 is provided with a manhole 8, and the manhole 8 needs to be covered, locked and tightly closed. The manhole of the outdoor water storage tank 7 is sealed by a blind flange disc, and a monitoring device is arranged. The height of the manhole 8 above the outer top of the water outlet tank body 100 is not less than 0.1 m. When the diameter of the round manhole is not less than 0.7m, the length of each side of the square manhole is not less than 0.6 m;

h. when the water storage tank 7 adopts a water pump to pressurize and feed water, a device for automatically controlling the on/off of the water pump by the water level of the water storage tank 7 is arranged. When a group of water pumps supply water to a plurality of water storage tanks 7, a control valve is preferably arranged on the water inlet pipe 9, and the automatic control is realized by water level monitoring equipment;

i. the inner parts of the upper end surfaces of the water storage tank bodies 101 are provided with spray pipes 5. The spray pipe 5 extends out of the water storage box body 101, the spray pipe 5 extending out of the water storage box body 101 is connected with a water inlet pipe 9, the spray pipe 5 extending out of the water storage box body 101 is provided with an electromagnetic valve 3, the spray pipe 5 is provided with a rotary spray ball, and the water inlet pipe 9 is controlled through the electromagnetic valve 3.

The utility model discloses specific water tank body 100 is formed a whole by two water storage tank body 101 concatenations, and left water storage tank body 102 and right water storage tank body 103 promptly, water storage tank body 101 are assembled by nine water storage tanks 7 and form, and nine water storage tanks 7 are 3 x 3 and arrange the distribution, and water storage tank 7 should divide into two check that the volume equals basically to can the autonomous working. The water tank body 100 is connected with a water pipe 13, the water pipe 13 is connected with a water inlet main pipeline 30, a water outlet main pipeline 24 is connected with the water inlet main pipeline 30 through a water outlet bent pipe 19, an electric valve with a manual handle is additionally arranged at the outlet of each water storage tank 7, and when the cleaning period of the water storage tanks 7 is up, the water storage tanks 7 are automatically switched between water supply and cleaning.

It should be noted that, although the above embodiments have been described herein, the scope of the present invention is not limited thereby. Therefore, based on the innovative concept of the present invention, the changes and modifications of the embodiments described herein, or the equivalent structure or equivalent process changes made by the contents of the specification and the drawings of the present invention, directly or indirectly apply the above technical solutions to other related technical fields, all included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a automatically cleaning water tank with controlling means of intaking, includes water tank body (100), water tank body (100) forms a whole by a plurality of water storage tank body (101) concatenation, every water storage tank body (101) are formed by a plurality of water storage tank (7) equipment, and water tank body (100), its characterized in that are constituteed through channel-section steel support (15) in a plurality of water storage tank (7): a base platform (11) is arranged on the lower bottom surface of the water tank body (100), spray pipes (5) are arranged inside the upper end surface of the water storage tank body (101), the spray pipes (5) extend out of the water storage tank body (101), the spray pipes (5) extending out of the water storage tank body (101) are connected with a water inlet pipe (9), an electromagnetic valve (3) is arranged on the spray pipes (5) extending out of the water storage tank body (101), the water inlet pipe (9) is connected with the water storage tank body (101) through an electric valve (10), and a glass sight glass filter (33), a pressure sensor (34) and a flowmeter (35) are arranged on the water inlet pipe (9); the two side end faces of the water storage tank body (101) are respectively provided with a man ladder (1) and an overflow pipe (2), and an overflow liquid level electrode (32) and a gravity reset valve (12) are arranged on the overflow pipe (2); a drain pipe (14) is arranged on the overflow pipe (2) in the water tank body (100); the water tank body (100) is connected with a water pipe (13), the water pipe (13) is connected with a water inlet main pipeline (30), the water inlet main pipeline (30) is connected with a water outlet main pipe (24), and the water inlet main pipeline (30) is connected with the water outlet main pipe (24) through a water outlet bent pipe (19).

2. A self-cleaning water tank having a water inlet control device as claimed in claim 1, wherein: the water tank body (100) is formed by splicing two water storage tank bodies (101) into a whole, namely a left water storage tank body and a right water storage tank body.

3. A self-cleaning cistern having a water inlet control means as claimed in claim 1 or claim 2, wherein: the water storage tank body (101) is formed by assembling nine water storage tanks (7), and the nine water storage tanks (7) are distributed in a 3 x 3 arrangement.

4. A self-cleaning water tank having a water inlet control device as claimed in claim 1, wherein: a manhole (8) is arranged on the water tank body (100) at the upper part of the people ladder (1).

5. A self-cleaning cistern having inlet water control means as claimed in claim 1 or 2 or 4, wherein: the water tank body (100) is arranged on the channel steel bracket (15).

6. A self-cleaning water tank having a water inlet control device as claimed in claim 1, wherein: a pressure gauge (22), a two-way needle valve (23) and an overpressure protector (26) are arranged on the water outlet main pipe (24); a butterfly valve (16), a flexible rubber joint (17) and a check valve (18) are arranged between the water outlet elbow (19) and the water outlet main pipe (24), and a stainless steel multistage centrifugal pump (28) is arranged on the water outlet elbow (19); a water shortage protector (29) is arranged on the water inlet main pipeline (30).

7. A self-cleaning water tank having a water inlet control device as claimed in claim 6, wherein: the lower surface of the stainless steel multistage centrifugal pump (28) is provided with a base (20); a diaphragm air pressure tank (21) is arranged on the base (20), and the diaphragm air pressure tank (21) is connected with a water outlet bent pipe (19).

8. A self-cleaning water tank having a water inlet control device as claimed in claim 7, wherein: the base (20) is made of 12# channel steel.

9. A self-cleaning cistern having inlet water control means as claimed in claim 1 or 6, wherein: the lower surface of the water outlet main pipe (24) is provided with an air pressure tank connecting hose (25) and a stainless steel blow-off pipe (31); a ball valve (27) is arranged on the stainless steel sewage draining pipe (31).

10. A self-cleaning water tank having a water inlet control device as claimed in claim 1, wherein: the water tank body (100) is provided with a vent pipe (4) and an electric signal pipe (6).

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