CN201276721Y - Non-negative pressure water supply equipment with flow regulation function - Google Patents

Abstract

The utility model discloses a non-negative pressure water supply device with a flow regulating function, which comprises an electric control cabinet and a water storage tank. A water outlet pipe is installed at the water outlet end of the water outlet, and a main water pipe is connected between the water outlet pipe and the user water pipe. A water pump and a one-way valve are installed on the main water pipe. The water pump is electrically connected to the electric control cabinet. The bypass water pipe connected in parallel with the water outlet pipe, the electric control valve is installed on the bypass water pipe, the auxiliary water pipe is connected in parallel on the main water pipe, the one-way valve is installed on the auxiliary water pipe, and the one-way valve is also installed on the outlet pipe of the water storage tank. A pressure gauge is installed on the top, and the pressure gauge, the electric control valve and the electric control cabinet form an electrical connection. The water supply equipment with this structure occupies a small space, can utilize tap water pressure, and has a large flow adjustment range, and is suitable for building water supply, especially for buildings with large water demand.

Description

Non-negative pressure water supply equipment with flow adjustment function

technical field

The utility model relates to non-negative pressure water supply equipment with a flow regulating function.

Background technique

At present, water supply units with relatively large water consumption, such as tap water pressurized pump stations, large-scale public construction facilities, and large-scale residential areas, mostly use pressurized water supply for water supply when the tap water pressure and flow are insufficient. This water supply equipment It mainly includes an electric control cabinet and a water storage tank. The water inlet end of the water storage tank is connected with the tap water pipe through the water inlet pipe. A pipeline control device is installed on the water inlet pipe, which can automatically cut off the water inlet pipe after the water storage tank is full of water. The water outlet end of the water storage tank A water outlet pipe is installed, and the main water pipe is connected between the water outlet pipe and the user water pipe. A water pump and a one-way valve are installed on the main water pipe. The water pump is electrically connected to the electric control cabinet. Its working principle is to put all the tap water into the water storage tank. The water pressure is reduced to zero, and then the water in the water storage tank is pressurized by the water pump and then supplied to the user. The disadvantages of this water supply equipment are: 1. When tap water is supplied, the tap water has a certain pressure. When it is placed in the water tank Afterwards, its pressure drops to zero, and the pressure brought by the tap water is not utilized and is wasted in vain; 2. The tap water required by the user all comes from the water tank. In order to meet the water supply demand, the volume of the water tank needs to be made very large and occupy a large area; 3. The flow adjustment function of traditional water supply equipment is poor, and it is even more difficult for users to meet water demand during peak water consumption.

Utility model content

The technical problem to be solved by the utility model is to provide a non-negative pressure water supply device which occupies a small space, can utilize tap water pressure, and has a large flow adjustment range.

In order to solve the above technical problems, this non-negative pressure water supply equipment with flow adjustment function includes an electric control cabinet and a water storage tank. The water inlet end of the water storage tank is connected with the tap water pipe through the water inlet pipe. The water outlet end of the water storage tank is equipped with a water outlet pipe, and the main water pipe is connected between the water outlet pipe and the user water pipe. The water pump and the one-way valve are installed on the main water pipe, and the water pump is electrically connected with the electric control cabinet. The main water pipes are connected with a bypass water pipe in parallel with the water outlet pipe, and an electric control valve is installed on the bypass water pipe, and an auxiliary water pipe is connected in parallel with the main water pipe, and a one-way valve is installed on the auxiliary water pipe, and the outlet pipe of the water storage tank is also installed. There is a one-way valve, a pressure gauge is installed on the tap water pipe, and the pressure gauge, the electric control valve and the electric control cabinet form an electrical connection.

When the tap water is supplied with a certain pressure, the tap water first fills the water storage tank. When the water storage tank is full, the pipeline control device on the water inlet pipe of the water storage tank automatically cuts off the water supply path, and the tap water stops filling the water storage tank. To prevent the tank from being filled with water through the outlet pipe of the water storage tank when the tap water pressure is too high, a one-way valve is installed on the outlet pipe of the water storage tank to ensure that water can only flow out from the outlet pipe of the water storage tank and cannot flow in from the outlet pipe; When the tap water pressure meets the water supply demand, the electric control cabinet detects the pressure value of the tap water through the pressure gauge installed on the tap water pipe, and the electric control cabinet controls the water pump on the main water pipe and the backup water pipe to stop, and the main water pipe and the backup water pipe are closed. The electric control cabinet controls the opening of the electric control valve on the bypass water pipe, and the tap water is supplied to the user through the bypass water pipe and the auxiliary water pipe. There is a one-way valve, so the water supply equipment can use the water pressure of the tap water for water supply, which greatly saves energy; when the water pressure of the tap water itself does not meet the water supply requirements, the electric control cabinet controls the electric control valve on the bypass water pipe to close and start The water pump on the main water pipe, the water pump pressurizes the water in the water storage tank and then sends it to the user's water pipe. Because the water storage tank is used to store water, the water pump will not generate negative pressure when pumping water. In order to reduce the pressure when the water pump starts and stops The impact of the current on the water pump, the electric control cabinet adopts frequency conversion control for the water pump, and the frequency conversion control can also realize real-time control of the water supply flow. When the water consumption is small, the water supply is low-speed, and when the water consumption is large, the water supply is high-speed, which can meet the different needs of users. In order to prevent the water in the user's water pipe from falling and impacting the water pump when there is a sudden power failure, check valves are installed on the main water pipe and the standby water pipe.

As an improvement, in order to ensure more reliable operation of the water supply equipment, a backup water pipe is connected in parallel on the main water pipe, and a water pump and a check valve are installed on the backup water pipe, and the water pump and the control cabinet form an electrical connection.

The water pump on the spare water pipe can be used as a spare water pump when the water pump on the main water pipe is damaged, and can also be used alternately with the water pump on the main water pipe to avoid the long-time work of a single water pump and reduce the service life of the water pump.

As an implementation manner, the pipeline control device is an electronically controlled valve.

The control of the pipeline through the electronically controlled valve can reduce human physical labor and improve the automation of water supply equipment.

As another implementation manner, the pipeline control device is a float valve.

The float valve can use its own buoyancy to automatically close or open the pipeline according to the liquid level in the water storage tank, which is very convenient.

To sum up, the non-negative pressure water supply equipment with flow adjustment function adopting this structure occupies a small space, can use tap water pressure, and has a large flow adjustment range, which is suitable for building water supply, especially for buildings with large water demand. use.

Description of drawings

The utility model is described in further detail in conjunction with accompanying drawing:

Fig. 1 is the structural representation of the utility model.

In the figure: 1 is the electric control cabinet, 2 is the tap water pipe, 3 is the user water pipe, 4 is the main water pipe, 5 is the electric control valve, 6 is the water pump, 7 is the one-way valve, 8 is the water storage tank, and 9 is the liquid level gauge 10 is a float valve, 11 is a pressure gauge, 12 is a check valve, 13 is a gate valve, 14 is a bypass water pipe, 15 is an auxiliary water pipe, 16 is a standby water pipe, 17 is a water inlet pipe, and 18 is an outlet pipe.

Detailed ways

As shown in the figure, the non-negative pressure water supply equipment with flow adjustment function includes an electric control cabinet 1 and a water storage tank 8. The water outlet pipe 18 is installed at the end, and the water outlet pipe 18 communicates with the user water pipe 3 through the main water pipe 4. The water pump 6 and the one-way valve 7 are installed on the main water pipe 4. The water pump 6 is controlled by the frequency conversion of the electric control cabinet 1. The amount of water automatically adjusts the speed of the water pump 6. The check valve 7 can protect the water pump 6 from impact when the water column in the user's water pipe 3 falls due to a sudden power failure of the water supply of the water pump 6. In order to prevent the failure of the check valve 7 caused by long-term work, the main A check valve 12 and a gate valve 13 are also installed on the water pipe 4, and the main water pipe can be cut off in case of accidents such as water pipe runaway so as to facilitate maintenance; in order to detect the liquid level of the water storage tank 8, a liquid level gauge 9 is installed in the water storage tank 8 , the liquid level gauge 9 transmits the detected liquid level signal to the electric control cabinet 1, in order to automatically cut off the water inlet pipe of the water storage tank 8 after the water storage tank 8 is full of water, a float valve 10 is installed at the end of the water inlet pipe 17 of the water storage tank 8 In order to utilize the water pressure of the tap water itself to supply water, the water inlet of the tap water pipe 2 and the main water pipe 4 is connected with a bypass water pipe 14 connected in parallel with the outlet pipe, and the main water pipe 4 is also connected in parallel with an auxiliary water pipe 15. When the pressure meets the water supply demand, the tap water is supplied to the user through the bypass water pipe 14 and the auxiliary water pipe 15, which avoids the disadvantages of the tap water first flowing into the water storage tank 8 in the traditional water supply equipment so that the water pressure is wasted in vain; Flow into the water storage tank 8 through the water outlet pipe 18 of the water storage tank 8, and a one-way valve 7 is installed on the water outlet pipe 18 of the water storage tank 8; Also have spare water pipe 16 in parallel, and water pump 6, one-way valve 7, check valve 12 and gate valve 13 are installed on the spare water pipe 16, and this water pump 6 accepts the frequency conversion control of electric control cabinet 1 equally, and spare water pipe 16 can be connected with main water pipe 4 can be used alternately to increase the service life of the water pump 6, and can work simultaneously with the main water pipe 4 to increase the water supply pressure; in order to facilitate the detection of tap water pressure, a pressure gauge 11 is installed on the tap water pipe 2 and the user water pipe 3, and the pressure gauge 11 will The water pressure signal is sent to the electric control cabinet 1, and the electric control cabinet 1 judges whether the water pressure of the tap water meets the water supply demand of the user according to the water pressure signal. signal, the tap water supplies water to the user water pipe 3 through the bypass water pipe 14 and the auxiliary water pipe 15; Whether the water pressure meets the demand, and then adjust the speed of the water pump 6 and the number of the water pump 6 in real time according to the water pressure signal until the water outlet pressure of the water pump 6 meets the water demand of the user. In order to ensure that the water pump 6 only draws water from the water storage tank 8 and not from the side Scrape water in the water pipe 14, an electric control valve 5 is installed on the bypass water pipe 14, the electric control valve 5 accepts the control of the electric control cabinet 1, and the electric control valve 5 is closed in advance before starting the water pump 6; in order to prevent When the water pump 6 supplies water, the water flowing out from the water pump 6 flows back to the water pump 6 through the auxiliary water pipe 15, and a check valve 7 is installed on the auxiliary water pipe 15; The cabinet 1 automatically cuts off the power supply of the water pump 6 according to the signal of the liquid level gauge 9, thereby protecting the water pump. When the water storage tank 8 is filled with water again, the electric control cabinet 1 controls the water pump 6 to start again, thereby achieving the purpose of timely water supply.

In this water supply equipment, the electric control cabinet 1 adopts the frequency conversion control technology, because the frequency conversion technology belongs to the known technology, and will not be described in detail here.

Claims (4)

1. Non-negative pressure water supply equipment with flow adjustment function, including electric control cabinet (1) and water storage tank (8), the water inlet end of water storage tank (8) is connected with tap water pipe (2) through water inlet pipe (17), A pipeline control device is installed on the water inlet pipe (17), a water outlet pipe (18) is installed at the water outlet end of the water storage tank (8), and a main water pipe (4) is connected between the water outlet pipe (18) and the user water pipe (3). A water pump (6) and a one-way valve (7) are installed on the main water pipe (4), and the water pump (6) forms an electrical connection with the electric control cabinet (1), which is characterized in that: the tap water pipe (2) and the main water pipe (4) A bypass water pipe (14) connected in parallel with the outlet pipe (18) is connected between them, an electric control valve (5) is installed on the bypass water pipe (14), and an auxiliary water pipe (15) is connected in parallel on the main water pipe (4). A check valve (7) is installed on the water pipe (15), and a check valve (7) is also installed on the outlet pipe (18) of the water storage tank (8), and a pressure gauge (11) is installed on the tap water pipe (2). The pressure gauge (11), the electric control valve (5) and the electric control cabinet (1) form an electrical connection. 2. The non-negative pressure water supply equipment with flow adjustment function according to claim 1, characterized in that: the main water pipe (4) is also connected in parallel with a backup water pipe (16), and a water pump (6) is installed on the backup water pipe (16) ) and the check valve (7), the water pump (6) and the control cabinet (1) form an electrical connection. 3. The non-negative pressure water supply equipment with flow regulating function according to claim 1 or 2, characterized in that: the pipeline control device is an electronically controlled valve. 4. The non-negative pressure water supply equipment with flow regulating function according to claim 1 or 2, characterized in that: the pipeline control device is a float valve (10).

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