TWM598895U - Closed water level sensing pipe column control pumping device - Google Patents

Abstract

A closed-type water-level sensing pipe string control pumping device that does not occupy space, which includes a pumping motor, a motor connecting pipe, a closed-type water-level sensing pipe string, a water inlet connecting pipe, a pumping pipe return connecting pipe, and a Water tower connecting pipe and a water tower. The closed water level sensing pipe string further includes a first low water level sensing contact, a first high water level sensing contact, a first water level sensing common contact, a low water level return valve, and a low water level return valve And an inlet/exhaust valve. The closed water level sensing pipe string is vertically connected between the water pump motor inlet connection pipe, the water pump return pipe connection pipe and the water tower connection pipe. The water tower connection pipe system is connected between the water pump motor and the water tower, matching the traditional water tower When the pipe string is at the first high water level and the water tower level is at the second low water level, the water lift motor can pressurize and guide the water through the water tower connecting pipe To the water tower; among them, when the inlet/exhaust valve installation method can completely exhaust the air in the pipe string, the water level in the pipe string changes from 0 to 200 cm can only distinguish the inlet water pressure of 0.2kg/cm ² ; /The installation position of the exhaust valve allows air to accumulate in a part of the space above the pipe string. Based on the principle that air is compressed by water pressure, the water level in the pipe string changes from 0 to 40 cm to distinguish the water pressure of 0 to 3 kg/cm ² . When the water pressure of the inlet pipe is low, causing the water level of the closed water level sensing pipe string to be lower than the float ball of the water level return valve, the water lift motor pumping pipe will automatically return to the closed water level sensing pipe first to reduce the water level drop of the pipe string. The water lift motor can be continuously operated during the low water pressure of the water inlet pipe until the water level of the water inlet pipe string is lower than the first low water level or the water level of the water tower reaches the second high water level.

Description

Closed water level sensing pipe string control pumping device

This creation is about a control water lifting device, especially a water lifting device that does not take up space and energy-saving characteristics and can prevent the tap water inlet pipeline from generating negative pressure.

Tap water is currently one of the most common sources of domestic water for households. During peak water usage hours, the tap water occasionally has insufficient water pressure. Therefore, the general public will generally install water towers at the height of the building, but because there is no space for storage in the lower area. The water tank, the pipeline behind the metering water meter, is directly used to pump water to the water tower to store the water supply.

As shown in Figure 1, in many cases, a water pumping motor 3 is directly installed between the tap water pipe 1 and the water tower 2, and the water pumping motor 3 is pressurized to pump water to the water tower 2. This design has a serious defect that once the water pressure in the water pipe 1 is insufficient, if the water pump motor 3 continues to operate, it may cause the water pump motor to run idling and burn out, or cause the water pipe 1 to generate negative pressure. If it appears in the damaged part of the tap water pipeline, it will cause groundwater, sewage, and sediment to be sucked into the tap water pipeline, resulting in pollution of the tap water quality. For example, in 2002, Northern Taiwan implemented a 54-day regional water shutdown. During the period, there were more than 2,000 water quality complaints in the water supply area of the Taipei Waterworks Office. Among them, more than 200 cases of water pollution caused by the direct pumping of the motor were restricted. It is necessary for the motor to pump water directly.

In addition, as shown in Figure 2, according to the specifications of the water supply unit, a reservoir 4 can be set at a low place. The water from the tap water pipeline 1 is directly introduced into the reservoir 4, and then the water pumping motor 3 is used to transfer the reservoir 4 The water in 4 is pumped to water tower 2. This design must have enough space to set up a reservoir 4. Although it can indeed avoid the problem of negative pressure pumping, no matter whether the water pressure of the tap water pipe 1 is sufficient, the water pumping motor 3 must be used to deliver the water to the water tower 2, so it consumes more energy.

Later, as shown in Figure 3, it was proposed to add a pipe 5 from the back end of the water pipe 1 to directly connect to the water tower 2. When the water pressure in the water pipe 1 is so high that it can be directly supplied to the water tower 2, and It is not necessary to go through the reservoir 4 and the pumping motor 3. Although this design has energy-saving features, the water supply unit is generally difficult to reach the water tower 2 located on a high floor (such as the fifth floor and above) in order to reduce the water leakage rate, and an additional pipeline 5 is added to the old building for implementation. There are difficulties.

As shown in Figure 4, it has recently been proposed to add a small buffer tank 6 and a one-way valve connecting pipe 7 from the rear end of the tap water pipeline 1. The buffer tank has a first high water level and a first low water level. When the water pressure is sufficient, water can be supplied directly or pressurized to the water tower 2; if the water pressure is insufficient, the water lift motor 3 indirectly pumps water from the small buffer water tank 6. This design has the advantages of avoiding negative pressure pollution, the small buffer water tank 6 only occupies a small space and energy saving. However, when the one-way valve fails and reverses seepage, the small buffer water tank 6 overflows in a short time.

In view of this, one of the main purposes of this creation is to use a closed pipe string to sense the water pressure of the water inlet pipe, avoid the negative pressure pumping of the pumping motor, and ensure the safety of drinking water quality. In order to achieve the foregoing and other objectives, this creation provides a closed water level sensing pipe string control water lifting device, which is used to guide the water in the tap water pipeline to a high place. The water lifting device includes a water lifting motor, a motor connecting pipe, and a A closed water level sensing pipe string, a water inlet connection pipe, a water lift pipe return connection pipe, a water tower connection pipe and a water tower. The closed water level sensing pipe string has a first high water level, a first low water level, a return water inlet valve and an inlet/exhaust valve, and is connected in series with the water inlet connection pipe and the water tower connection pipe; the water tower is provided The position is higher than the closed water level sensing pipe string and the pumping motor, and the water tower has a second high water level and a second low water level. The motor connecting pipe is connected to the tap water pipeline, the pumping motor and the closed water tower Between the water level sensing pipe strings, where the pumping motor is used When the water level of the closed water level sensing pipe string reaches the first high water level and is not lower than the first low water level, and the water level of the water tower is lower than the second low water level and has not yet risen to the second high water level, the water is passed through the water tower The connecting pipe is pressurized into the water tower until the water level of the enclosed water level sensing pipe string is lower than the first low water level or the water level of the water tower reaches the second high water level.

With the aforementioned design, when the water pressure in the tap water pipe is sufficient, the tap water can be automatically replenished to the water tower to achieve energy saving purposes; when the water pressure in the tap water pipe continues to be low and the water tower is insufficient for use, if it is equipped with automatic return For reduced pumping, the first high water level with a lower elevation can be selected, which is equivalent to relaxing the conditions for the pumping motor to resume startup and extending the operating space for continuous pumping; when the water pressure in the tap water pipe is seriously insufficient, in the case of backflow Once the water level of the closed-type water level sensing pipe string is still lower than the first low water level, the pumping motor stops operating. In this way, the pumping motor can be prevented from idling and burning and the problem of negative pressure pumping can be avoided.

1: Tap water pipeline

2: water tower

3: Pumping motor

4: reservoir

5: pipeline

6: Small buffer sink

7: Check valve connecting pipe

8: Direct water hydrant

00: Water meter forward water pipeline

01: Measuring water meter

02: Check valve

10: Pumping motor

15: Controller

20: Closed pipe string water level sensing pipe string

21: Water inlet connection pipe

211: Order for disconnection and connection of inlet connection pipe

212: connection valve

213: Drain valve

22: Inlet water pressure gauge

23: Pumping pipe return connection pipe

231: Reason for disconnection of return connection pipe

24: Low water level return valve

241: Low water return valve float

25: Inlet/exhaust valve

26: The first water level sensor

261: The first high water level sensing element

262: Common contact for the first water level sensing

263: The first low water level sensing element

264: Water level sensing wiring

27: Closed pipe string repair hole cover

30: Water Tower

31: The second water level sensor

50: Motor connection pipe

60: Water tower connecting pipe

61: Water tower inlet valve

611: Water tower inlet valve float

Figure 1 is a schematic diagram of a conventional water lifting device.

Figure 2 is a schematic diagram of another conventional water pumping device.

Figure 3 is a schematic diagram of the third conventional water-lifting device.

Figure 4 is a schematic diagram of the fourth conventional non-negative pressure energy-saving water pumping device.

Figure 5 is a schematic diagram of the first embodiment of this creation.

Figure 6 is a schematic diagram of the use state of the first embodiment of the creation. The water level of the water tower is lower than the second highest water level. Due to the insufficient water pressure of the motor connecting pipe, the water level of the pipe string drops, the motor pumping water is partially returned, and the water tower is reduced.

Figure 7 is a schematic diagram of the working state of the first embodiment of this creation. The water level of the water tower is lower than the second high water level. Because the water pressure of the motor connecting pipe is seriously insufficient, the water level of the pipe string is lower than the first low water level, and the water lift motor stops running. Interrupt the water intake.

Figure 8 is a schematic diagram of the working state of the first embodiment of this creation, where the water pressure of the motor connecting pipe rises and the water level of the pipe string reaches the first high water level, but the water level of the water tower before this is lower than the second high water level, and the motor resumes to start When the water enters the water tower, the water intake stops until the water level of the water tower reaches the second highest water level.

Figure 9 is a schematic diagram of the use state of the first embodiment of this creation, where the water level of the water tower reaches the second highest water level, and the water tower stops entering water.

Figure 10 is a schematic diagram of the use state of the first embodiment of this creation. When the water storage capacity of the water tower is sufficient for 24 hours of water, it can be simplified without the low water level return valve pipe and the smaller diameter pipe string is used. During the low period, the first low water level sensing element of the pipe string does not touch the liquid surface, the water lift motor stops, and the water tower interrupts the water intake; during the non-peak water use period, the water pressure of the water inlet pipeline rises, and the first high water level sense of the pipe string When the measuring element touches the liquid surface, the pumping motor is activated, and the water tower will be filled.

Figure 11 is a schematic diagram of the use state of the first embodiment of this creation, in which the water lift motor and the closed water level sensing pipe string are installed in the basement. When the water pressure of the water inlet pipeline on the ground elevation of the first floor is zero, the inlet located in the B1 basement There is still 0.35kg/cm ^{2 of the} water pipeline. At this time, the water level of the pipe string is higher than the water stop height of the low-water return valve float. Therefore, setting a low-water return valve will not help the negative pressure prevention of the ground inlet pipeline on the first floor. Therefore, it is simplified that there is no low water level return valve, a smaller pipe diameter pipe string is selected, and the first low water level sensing element is moved up to the air section that will be compressed by water pressure. During the operation of the water pump, the first pipe string A low-water level sensing element must touch the liquid surface, which is equivalent to maintaining a positive pressure of 0.35kg/cm ² in the pipe string, so that the water-lifting pump can continue to operate to ensure that the water inlet pipeline at the ground elevation of the first floor does not have negative pressure .

Figure 12 is a schematic diagram of the use state of the first embodiment of this creation. The object is that the pumping motor is located on the ground floor. When the pumping motor is running, the water pressure drop of the inlet pipeline is less than 0.2kg/cm ² , so it can be simplified without setting low water level return Valve, select a smaller pipe string, but the height of the pipe string needs to be extended to about 200 cm, and discharge/exhaust above the pipe string. During the operation of the pumping motor, if the inlet water pressure is less than 0.2kg/cm ² , make The water level of the pipe string is lower than the first low water level sensing element, the pumping motor stops running, and the water tower interrupts the water inlet. You must wait until the inlet water pressure is greater than 0.2kg/cm ² , the first low water level sensing element and the first The high-water-level sensing elements all touch the liquid surface before the pumping motor resumes operation.

Please refer to Figure 5. The enclosed water-level sensing pipe string control pumping device of the first embodiment of this creation is used to guide the water in the tap water pipeline 00 to a high place. The pumping device does not require additional The water storage space includes a water lifting motor 10, a closed water level sensing pipe string 20, a water tower 30, a motor connecting pipe 50 and a water tower connecting pipe 60.

The water lifting motor 10 is connected to a water pipe 00 and a closed water level sensing pipe string 20 via a motor connecting pipe 50. In order to control the opening and closing of the pumping motor 10, a controller 15 is required. The controller 15 needs to control the first water level sensor 26 and the second water level sensor 31 transmitted by the water level sensing wiring 264. The pumping motor 10 opens and closes.

The closed water level sensing pipe string 20 has a diameter of about 15 cm and a height of about 40 cm. It consists of a water inlet connection pipe 21, a water lift pipe return connection pipe 23, a low water level return valve 24, and an inlet/exhaust valve 25. And the first water level sensor 26 are connected to related components, wherein the first water level sensor 26 includes: a first high water level sensing element 261, a first water level sensing common contact 262, and a first low water level sensing element 263.

The low water level return valve 24 is located at a height of about 20 cm in the closed water level sensing pipe string 20. The intake/exhaust valve 25 can remove the air below the low water level return valve 24, or suck in air to avoid negative effects on the pipe string. When the inlet water pressure increases, the air accumulated above the pipe string is squeezed, causing the liquid level of the pipe string to rise. Until the water level rises to the first high water level sensing element 261, the pump motor 10 is restored Power contacts.

In order to avoid frequent starting of the pumping motor 10 and negative pressure pumping, the first low water level sensing element 263 is higher than the first high water level sensing element 261 by at least 10 cm. The elevation of the first high water level sensing element 261 is based on Depending on the water pressure of the water inlet pipeline and the water lifting volume of the water lifting motor 10, the air accumulated above the pipe string will be compressed by the water pressure of the water inlet pipeline to cause a relative change in the water level, thereby distinguishing the pressure difference of the water inlet pipe from 0 to 3.0kg/cm ² , Stably controls the operation of the pumping motor 10.

The water tower 30 is arranged at a position higher than the closed water level sensing pipe string 20 and the lifting motor 10, and the water tower 30 has a second high water level and a second low water level sensor 31 for sensing the water tower Whether the water level of 30 is at the second high water level and the second low water level, the working principle of the second water level sensor 31 can be the same as that of the first water level sensor 26. In order to ensure the safe use of domestic water, the total water storage capacity of the water tower 30 is preferably 40% of the daily water consumption, and the water storage capacity of the water tower 30 at the second low water level is the water storage capacity of the water tower 30 at the second high water level 60-80%, preferably 70%, with the water lifting device of this creation, it can ensure that the household water is safe. Of course, water outlets are usually provided near the bottom of the water tower 30 to supply water to each floor of the building, but they are not particularly shown in the drawings.

Between the motor connecting pipe 50 and the tap water pipe 00, a water meter 01 of a tap water unit can be set to measure the water consumption. Generally, a check valve 02 should be provided after the water meter 01 to prevent the tap water from flowing back to the tap water pipe 00.

The motor connecting pipe 50 is provided with an inlet water pressure gauge 22, a connecting valve 212, and a drain valve 213. The valve opening of the connecting valve 212 and the drain valve 213 can be adjusted to simulate the water pressure of different motor connecting pipes 50. Column water level induction test.

In order to facilitate the disassembly and maintenance, the water inlet connection pipe disconnection order 211, the return connection pipe disconnection order 231 and the closed pipe string maintenance hole cover can be set between the closed water level sensing pipe string 20 and the motor connection pipe 50 27.

The water tower connecting pipe 60 is connected between the water lift motor 10 and the water tower 30. One end of the water tower connecting pipe 60 connected to the water tower 30 can also be provided with a water tower inlet valve float 611, so that the water pressure in the tap water pipeline 00 is sufficient. At this time, avoid the overflow of the water tower 30.

Please refer to Figure 6, the water level of the closed water level sensing pipe string 20 is maintained at a constant The water lift motor 10 operates according to the second water level sensor 31 of the water tower 30. At this time, the water level of the second water level sensor 31 of the water tower 30 is lower than the second low water level, and the water lift motor 10 runs normally to lift water.

Please refer to Figure 7. The water tower 30 has insufficient water storage capacity and the water level of the second water level sensor 31 is lower than the second low water level. However, because the closed water level sensing pipe string 20 has a water level lower than the first low water level 263, the water is raised The motor 10 stops pumping water.

Please refer to Fig. 8, the water level of the enclosed water level sensing pipe string 20 is continuously higher than the first high water level 263, the water level of the second water level sensor 31 of the water tower 30 has not yet reached the second high water level, and the water lift motor 10 operates normally.

Please refer to Fig. 9, the water level of the second water level sensor 31 of the water tower 30 reaches the second highest water level, and the water lifting motor 10 stops lifting water.

Please refer to Figure 10, the object is that when the water inlet water pressure gauge 22 is low, the water tower 10 has sufficient water storage capacity for 24 hours, so it is simplified that there is no low water level return valve 24, and the closed water level sensing string 20 is smaller. Pipe diameter pipe string, when the first low water level sensing element 263 of the pipe string does not touch the liquid surface, the water lift motor 10 stops running, and the water tower 10 interrupts the water inlet; until the water inlet water pressure gauge 22 rises, the first height of the pipe string The water level sensing element 261 touches the liquid surface, so that the pumping motor 10 resumes operation.

Please refer to Figure 11, the object is that the pumping motor 10 and the closed water level sensing pipe string 20 are installed in the basement. When the water pressure of the water inlet pipeline at the ground elevation of the first floor is zero, the inlet water pressure gauge 22 in the basement B1 remains There is 0.35kg/cm ^2. At this time, the water level of the pipe string is higher than the water stop elevation of the low water level return valve float 241. Therefore, setting the low water level return valve 24 does not help the negative pressure prevention of the ground water inlet pipeline on the first floor. Therefore, it is simplified that there is no low water level return valve 24, a smaller pipe diameter is selected, and the first low water level sensing element 263 is moved up to the air section that will be compressed by water pressure. During the operation of the pump 10, the pipe string The first low-water level sensing element 263 must touch the liquid surface, which is equivalent to maintaining a positive pressure of 0.35kg/cm ² in the pipe string, so that the pump 10 can continue to operate to ensure that the water inlet pipeline at the ground elevation of the first floor does not There will be negative pressure.

Please refer to Figure 12, when the target is when the pumping motor 10 is running, the pressure drop of the water inlet pipeline is less than 0.2kg/cm ² , and there is no need to set the low water level return valve 24. Choose a smaller diameter pipe string from the top of the pipe string Inlet/exhaust, but the height of the pipe string needs to be extended to about 200 cm. When the water company shuts down or reduces the supply of water, the inlet water pressure gauge 22 is less than 0.2kg/cm ² , the closed water level sensing pipe string 20 The water level is lower than the first low water level sensing element 263. At this time, the power supply of the pumping motor 10 is interrupted. You must wait for the water inlet water pressure gauge 22 to recover more than 0.2kg/cm ² , and the water level of the closed water level sensing pipe string 20 touches The first high water level sensing element 261 can trigger the pumping motor 10 to resume operation.

Finally, it must be explained again that the constituent elements disclosed in the previously disclosed embodiments of this creation are only examples, and are not intended to limit the scope of this case. The substitution, application or change of other equivalent elements should also be used in this case. Covered by the scope of patent application.

00: Water meter forward water pipeline

01: Measuring water meter

02: Check valve

10: Pumping motor

15: Controller

20: Closed pipe string water level sensing pipe string

21: Water inlet connection pipe

211: Order for disconnection and connection of inlet connection pipe

212: connection valve

213: Drain valve

22: Inlet water pressure gauge

23: Pumping pipe return connection pipe

231: Reason for disconnection of return connection pipe

24: Low water level return valve

241: Low water return valve float

25: Inlet/exhaust valve

26: The first water level sensor

261: The first high water level sensing element

262: Common contact for the first water level sensing

263: The first low water level sensing element

264: Water level sensing wiring

27: Closed pipe string repair hole cover

30: Water Tower

31: The second water level sensor

50: Motor connection pipe

60: Water tower connecting pipe

61: Water tower inlet valve

611: Water tower inlet valve float

Claims (6)

A closed water level sensing pipe string control pumping device is used to guide water in a tap water pipeline to a high water tower. The device includes: a closed water level sensing pipe string with a first low water level and a first high Water level sensing function; a pumping motor, pressurized to send water to the tap water inlet pipe, the pumping volume specification of the pumping motor, under normal operation, the water pressure of the tap water inlet pipe must be maintained above 0.02kg/cm ² as a principle; among them, the pumping motor It is used to pressurize and guide the water to the water tower through the connecting pipe when the water level of the closed water level sensing pipe string reaches the first high water level and not lower than the first low water level until the water level of the closed pipe string is low Until the first low water level or the water level of the water tower reaches the second high water level. The closed water level sensing pipe string control pumping device according to claim 1, wherein the closed water level sensing pipe string further includes a water inlet connection pipe, a water lifting pipe return connection pipe, a low water level return valve, and an inlet /Exhaust valve, a first low water level sensing contact, a first high water level sensing contact and a first water level sensing common contact, the closed water level sensing pipe string is vertically connected to the water pumping motor inlet Between the connecting pipe, the backflow connecting pipe of the water lift pipe and the water tower connecting pipe; when the inlet/exhaust valve is installed, air will accumulate on the top of the pipe string, and the water level in the pipe string will change from 0 to 40 by the principle that the air is compressed by water pressure The centimeter can distinguish the inlet water pressure of 0~3kg/cm ² ; when the inlet/exhaust valve is installed above the pipe string, the water level in the pipe string can only be distinguished from 0~0.2kg/cm ^{2 if} the water level changes by 200 cm. . The closed water level sensing pipe string control pumping device according to any one of claims 1 to 2, wherein when the water pressure of the inlet pipe is low, the water level of the closed water level sensing pipe string is reduced, which is to relax the pumping motor recovery For starting conditions, select a lower water level of the pipe string as the first high water level elevation for the pumping motor to resume startup. The water tower connecting pipe of the pumping motor will first automatically partially return to the closed water level sensing pipe string to make the pipe string water level drop slowly , The water lift motor can run continuously during the low water pressure in the inlet pipeline. The closed water level sensing pipe string control pumping device as described in any one of claims 1 to 2 If the water storage capacity of the water tower is sufficient for 24 hours of water use, it can be simplified that there is no low water level return valve, and a smaller pipe diameter pipe string can be used instead. When the water pressure of the inlet pipeline is low, the first low water level sensing element of the pipe string If the liquid level is not touched, the pumping motor stops running and the water tower interrupts the water supply; during non-peak water use periods, the water pressure in the water inlet pipeline rises, and the first high water level sensing element of the pipe string touches the liquid surface to trigger the pumping motor to fill the water tower water. For example, the closed water level sensing pipe string control lifting device described in any one of claim 1 to 2, if the lifting motor and the closed water level sensing pipe string are installed in the basement, when the water pressure of the inlet pipe at the ground elevation of the first floor is At zero hour, the inlet pipe located in the basement of B1 still has 0.35kg/cm ^2. At this time, the water level of the pipe string is higher than the water stop height of the low water level return valve float. Therefore, setting the low water level return valve does not help the ground inlet on the first floor. The negative pressure control of the water pipe is simplified, so there is no low water level return valve, and a smaller pipe diameter is selected. The first low water level sensing element is moved up to the air section that will be compressed by water pressure, and the water pump runs During this period, the first low water level sensing element of the pipe string must touch the liquid surface, which is equivalent to maintaining a positive pressure of 0.35kg/cm ² in the pipe string, so that the water pump can continue to operate to ensure water inflow at the ground elevation of the first floor. There will be no negative pressure in the pipeline. As described in any one of Claims 1 to 2, the closed water level sensing pipe string controls the water lifting device, when the water pressure drop of the water inlet pipeline is less than 0.20kg/cm ² during the operation of the water lifting motor, it can be simplified without low water level reflux Valve, select a smaller diameter pipe string, set the inlet/exhaust valve above the pipe string, but the height of the pipe string must be 200 cm. When the water pressure of the inlet pipe is less than 0.20kg/cm ² , the first The low water level sensing element does not touch the liquid surface, the pumping motor stops running, the water tower interrupts the water intake, and the water level of the pipe string rises to touch the first high water level sensing element and then touches the pumping motor.

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