CN202441607U - Water leading device - Google Patents

Abstract

The utility model discloses a water leading device, and belongs to the field of fluid machinery. The problem that an existing pump unit can suck water only by means of vacuum pumping or backward flowing is solved. The water leading device comprises a pump and a self-suction tank, the self-suction tank is communicated with the pump via a pipeline, the inside of the self-suction tank is in negative pressure, and the self-suction tank is communicated with a water inlet tube. After the pump is started, the water level in the self-suction tank is reduced, so that the negative pressure is generated, river water is pressed into the self-suction tank by atmosphere pressure via a suction pipe, and accordingly the purpose of leading the water is achieved. The total device and the pipeline are ensured not to leak air in a total water leading process. Under the condition that the liquid level is lower than the center of an impeller of the pump and a vacuum pump is not used, a function of leading the water immediately after the pump is started is realized. Besides, the water leading device is simple in structure and convenient to install, use and maintain.

Description

Water diversion apparatus

Technical field

The utility model relates to field of fluid machinery, especially designs a kind of water diversion apparatus.

Background technique

Existing centrifugal pump need adopt vacuum pump to vacuumize when water level is lower than the pump impeller center, otherwise can can't work because inhaling not Shang water, and still inhaling vacuum again need a period of time, so can not in time supply water.And in many technologies and some great equipment, diversion at once after the pump unlatching, all need pump directly to supply water like pharmacy water supply, manufacture of cement water supply, living water, production line continuous water supply, extraordinary war products etc.

Cause that from lower eminence has dual mode to water for existing, a kind of self-priming pump that is to use will not inhaled water but its conduit pipe is oversize, so self-priming pump need be installed near the water source, so the mounting point is restricted, installs inconvenience.Another kind is that centrifugal pump and vacuum pump use together, vacuumizes with vacuum pump earlier, start centrifugal pump then, so starting time is too slow, uses inconvenience.

And water diversion apparatus is applicable to water is caused eminence from lower that self-sucking pot can change according to the change of setting height(from bottom), so the mounting point is unrestricted.When water diversion apparatus drew water, pump was being filled water with self-sucking pot before starting for the first time, used that a liquid level can be stabilized in a height in the back jar, and when needing to start for the second time, directly primer pump just can direct diversion.As shown in Figure 1, because the restriction of its structural type, the tightness of complexes requires than higher.

Summary of the invention

In order to overcome of the requirement of existing pump to starting time and mounting point; The utility model aims to provide a kind of water diversion apparatus; This water diversion apparatus is used for directly extracting the water that water level is lower than the pump impeller center position through the self-sucking pot and the complexes structure of special research.

To achieve these goals, the technological scheme that the utility model adopted is: said water diversion apparatus, comprise pump, and its structural feature is, also comprises the self-sucking pot that is communicated with pump through pipeline, is negative pressure in the jar of said self-sucking pot, this self-sucking pot is communicated with intake pipe.

Thus, device is full of earlier water in self-sucking pot after successfully starting for the first time; Water level can be stabilized on the numerical value in the self-sucking pot, and primer pump then is because the water in the self-sucking pot jar is taken away; Thereby cause jar interior negative pressure that produces; From the water source water is sucked in the self-sucking pot by intake pipe through negative pressure, thereby realize high drop water intaking, later water can directly start.

Further, said pipeline is provided with valve.

As preferred version, the waterexit end of said intake pipe is positioned at self-sucking pot jar internal upper part, prevents that pot liquid from overflowing from intake pipe.

Inlet valve and outlet valve are housed on the said self-sucking pot.

In order to show the water level in the self-sucking pot in real time, on the said self-sucking pot level meter is housed.

For the ease of cleaning self-sucking pot, said self-sucking pot bottom is provided with outage.

For the ease of sediments cleaning in the self-sucking pot, said self-sucking pot side is provided with auxiliary hole.

By said structure, the utility model comprises pump, the valve that is connected with pump, the self-sucking pot that valve is connected with inlet pipeline, and said pump body adopts the horizontal inlet structure, so that directly be connected with valve, whole device and pipeline tightness require high.Said self-sucking pot volume can be made according to the length and the size of inlet ductwork.

Said water intaking pump water diversion apparatus is simple in structure, and the mounting point washability is bigger, uses more extensive.

When device need start first, inject liquid earlier to needed height, Open valve starts water pump then, and the gas in the inlet ductwork is brought in the self-sucking pot.Portion gas can be pulled away by liquid together, remaining staying in the jar, and when system's turnover water yield reached steady state, the liquid level degree of depth can be stablized in jar.

Compared with prior art, the beneficial effect of the utility model is: the utility model has solved to install at a distance and has drawn water with self-priming and centrifugal pump need vacuumize the problem of starting.The utility model is behind pump startup, and the water level in the self-sucking pot reduces, thereby produces negative pressure, and atmospheric pressure is pressed into river in the self-sucking pot through intake line, thereby reaches the purpose of diversion.Device is lower than under pump impeller central position and the condition without vacuum pump at water level; The function of diversion immediately behind the realization pump startup; Apparatus structure is simple; Installation, use, easy to maintenance can be satisfied the needs that various manufacture of cement water supply, living water, production line continuous water supply, extraordinary war products are supplied water.

Below in conjunction with accompanying drawing and embodiment the utility model is done further to set forth.

Description of drawings

Fig. 1 is a kind of embodiment's of the utility model a structure principle chart.

In the drawings

The 1-pump; The 2-self-sucking pot; The 3-valve; The 4-pipeline; The 5-level meter; 6-pump house wall; The 7-intake pipe.

Embodiment

A kind of water diversion apparatus, as shown in Figure 1, comprise pump 1; Through the self-sucking pot 2 that pipeline 4 is communicated with pump 1, be negative pressure in the jar of said self-sucking pot 2, this self-sucking pot 2 is communicated with intake pipe 7; The waterexit end of this intake pipe 7 is positioned at self-sucking pot 2 pipe internal upper parts; Said pipeline 4 is provided with valve 3, and inlet valve, outlet valve, level meter 5 are housed on the said self-sucking pot 2, and its bottom is provided with outage.

Below describe the design principle and the process of present embodiment in detail:

1, design condition

1.1, the lowest water level absolute altitude of water intaking river is 113m, pump house basis absolute altitude is 117.6m, pump house leans on the concordant 1# of interior metope, the 2# column in river, goes out the outer suction line of pump house wall and becomes 50.45 ° with level.

1.2, the necessary diversion condition of water diversion apparatus system

1.3, the suction head when selected water pump satisfies lowest water level;

1.4, jar in the volume of institute pumps water greater than the spatial volume in the inlet pipeline;

1.5, jar in gas negative pressure and the difference of barometric pressure in when suction can hydraulic pressure be delivered in the jar;

1.6, the device lift in the water absorption course is greater than the necessary net positive suction head of pump;

2, device design

2.1, inlet pipeline ￠ 250mm, the self-sucking pot lower end is cylindrical, jar diameter ￠ 1600mm; Jar high 1500mm (reducing the height of inlet pipeline water outlet position as far as possible), above small cylindrical, diameter ￠ 600mm; High 300mm holds the self-sucking pot upper end level with both hands on the intake pipe, promptly flat small cylindrical jar lower end; Because pump water inlet center height is 200mm, then end distance self-sucking pot outlet pipe upper end distance is 1075mm on the intake pipe.Inlet pipeline design is like Fig. 1, and the low liquid level of water can guarantee that apart from 400mm intake pipe mouth of pipe minimum range bottom the riverbed, Sun Shui river is 390mm to the intake pipe mouth of pipe apart from the river.

2.2, device calculates

If when using for the first time the water in the self-sucking pot is irritated to the intake pipe upper end; In the self-sucking pot and the same barometric pressure of gas pressure of pipeline, intake pipe gassiness part length overall 14526mm then, tolerance is 0.713m3 in the pipe; The gas at small cylindrical place, self-sucking pot upper end is 0.085m3, then total gas 0.798m3.

All convert the negative air pressure in when suction in barometric pressure and the self-sucking pot into the m water column; The intake pipe mouth of pipe is 6.1m apart from river lowest water level height in the self-sucking pot; Barometric pressure is decided to be the 10.2m water column; Water column when then suction is critical in the self-sucking pot should be 3.9m (the negative pressure value of relative atmosphere, the loss of establishing inlet pipeline 0.2m).

According to carat imperial equation of uncle and Boyle's law, P1V1=P2V2 has:

0.798*10.2=3.9*V2

Can calculate V2=2.087m3; The water that when suction is critical, need take out is 2.087m3; The liquid level minimum altitude is 0.46m when critical; The total volume that can pump water in jar at most is 2.93m3, and 40% safe clearance (considering that device has part gas leakage, the variation of ambient temperature, the variation of atmospheric pressure and the situation such as error of piping installation) is arranged.

Use the result: critical liquid level is at 0.6 meter, and is stable.

The content that the foregoing description is illustrated is to be understood that to these embodiments and only is used to be illustrated more clearly in the utility model; And be not used in the restriction the utility model scope; After having read the utility model, those skilled in the art all fall within the application's accompanying claims institute restricted portion to the modification of the various equivalent form of values of the utility model.

Claims (7)

1. a water diversion apparatus comprises pump (1), it is characterized in that, also comprises the self-sucking pot (2) that is communicated with pump (1) through pipeline (4), is negative pressure in the jar of said self-sucking pot (2), and this self-sucking pot (2) is communicated with intake pipe (7).

2. water diversion apparatus according to claim 1 is characterized in that, the waterexit end of said intake pipe (7) is positioned at self-sucking pot (2) jar internal upper part.

3. water diversion apparatus according to claim 1 is characterized in that, said pipeline (4) is provided with valve (3).

4. water diversion apparatus according to claim 1 is characterized in that, level meter (5) is housed on the said self-sucking pot (2).

5. water diversion apparatus according to claim 1 is characterized in that, said self-sucking pot (2) bottom is provided with outage.

6. water diversion apparatus according to claim 1 is characterized in that, said self-sucking pot (2) side is established the maintenance auxiliary hole.

7. water diversion apparatus according to claim 1 is characterized in that, said self-sucking pot is equipped with inlet valve on (2).

Images