CN203742967U

CN203742967U - Self-priming pump

Info

Publication number: CN203742967U
Application number: CN201320682460.8U
Authority: CN
Inventors: 房飞; 李新平
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-10-30
Filing date: 2013-10-30
Publication date: 2014-07-30
Anticipated expiration: 2023-10-30

Abstract

The utility model relates to the field of machinery, in particular to a self-priming pump. The self-priming pump adopts the structure that a vacuum measurement assembly is arranged between a water suction opening and a check valve of a water suction channel and is used for measuring the pressure between the check valve and a downhole horizontal plane. A pressure-operating condition corresponding relationship is provided for the self-priming pump. The operating conditions in the pressure-operating condition corresponding relationship comprise: normal operation; untight seal of the water suction opening, air leakage of a bottom pipe, or blockage of the bottom pipe; instable voltage; damage of water pump components; water inflow of a pressure tank; insufficient downhole water; downhole water depth. The self-priming pump provided by the embodiment of the utility model achieves the benefit that specific factors, causing that the self-priming pump cannot work normally, can be determined accurately.

Description

Self-priming pump

Technical field

The utility model relates to mechanical field, in particular to self-priming pump.

Background technique

The existing various self-priming pumps of China (jet pump, screw pump, self priming pump etc.) at present; in actual practical process, often can run into a variety of causes; as: bottom tube gas leakage, the situations such as position is high or low, voltage is high or low of intaking; these situations often cause the draw water situation of poor effect of self-priming pump; make troubles to users; and user Duo Shi unprofessional user; be difficult to accurately judge the not good concrete cause of self-priming pump running; therefore; be difficult to find problem fast and accurately; and take suitable counter-measure, recover self-priming pump and run well.

Model utility content

The purpose of this utility model is to provide a kind of self-priming pump, to solve the above problems.

A kind of self-priming pump is provided in embodiment of the present utility model, between water sucking mouth and the safety check of water absorption channel, be provided with vacuum test assembly, for the pressure between test safety check and well inner horizontal demonstration, self-priming pump connects and is printed on the card of pressure-operating condition corresponding relation, and the operating condition in pressure-operating condition corresponding relation comprises: work well, the poorly sealed or bottom tube gas leakage in water sucking mouth or bottom tube obstruction, voltage instability, pump part damage, water deficiency, the well water degree of depth in pressurized tank water inlet, well.

The self-priming pump that the utility model embodiment provides, can reach following beneficial effect:

Model utility people is through studying for many years discovery, can judge by the pressure between test safety check and well inner horizontal the concrete cause that self-priming pump cannot normally be worked, therefore, by being arranged at the vacuum test assembly between water sucking mouth and the safety check of water absorption channel, test the pressure between safety check and well inner horizontal, can accurately determine concrete cause according to pressure-operating condition corresponding relation.

Brief description of the drawings

Fig. 1 shows the structural representation of self-priming pump in embodiment of the utility model.

Embodiment

Also by reference to the accompanying drawings the utility model is described in further detail below by specific embodiment.

The utility model is an embodiment provide a kind of self-priming pump, between water sucking mouth and the safety check of water absorption channel, be provided with vacuum test assembly, for the pressure between test safety check and well inner horizontal demonstration, self-priming pump connects and is printed on the card of pressure-operating condition corresponding relation, and the operating condition in pressure-operating condition corresponding relation comprises: work well, the poorly sealed or bottom tube gas leakage in water sucking mouth, voltage instability, pump part damage, water deficiency, the well water degree of depth in pressurized tank water inlet, well.

Model utility people is through studying for many years discovery, can judge by the pressure between test safety check and well inner horizontal the concrete cause that self-priming pump cannot normally be worked, therefore, by being arranged at the vacuum test assembly between water sucking mouth and safety check, test the pressure between safety check and well inner horizontal, can accurately determine concrete cause according to pressure-operating condition corresponding relation.

Describe this self-priming pump in detail by some specific embodiments below:

A kind of self-priming pump, as Fig. 1, shown in, between water sucking mouth 3 and water absorption channel (being the flow channel that the self-priming mouth of a river flows into self-priming pump) safety check 4, be provided with vacuum test assembly, for the pressure between test safety check 4 and well inner horizontal demonstration, self-priming pump connects and is printed on the card of pressure-operating condition corresponding relation, and the operating condition in pressure-operating condition corresponding relation comprises: work well, the poorly sealed or bottom tube gas leakage in water sucking mouth 3 or bottom tube obstruction, voltage instability, pump part damage, water deficiency, the well water degree of depth in pressurized tank water inlet, well.

It should be noted that, in other embodiments, the presentation mode of pressure-operating condition corresponding relation can have a variety of, such as: a form, be imprinted on a tinsel, tinsel is fixed in the housing outer surface of self-priming pump by welding or other means of fixation; Be imprinted in self-priming pump specification, or be imprinted in self-priming pump guide for use, or a card that is printed on corresponding relation, etc. variety of way, specifically not limitting, those skilled in the art can carry out fixed concrete appearance form as required.

Water sucking mouth 3 connects underground well casing, and the negative pressure between safety check 4 and underground water can judge gas leakage situation by observing pressure gauge, and the vacuum magnitude that in well, the height of the water surface produces is also different, and the steady shakiness of voltage also can have demonstration on pressure.

In certain embodiments, this vacuum test assembly comprises: be arranged at the through hole 2 on housing, through hole 2, between water sucking mouth 3 and safety check 4, and is connected with water absorption channel, and through hole 2 is connected with negative pressure of vacuum table 1.Negative pressure of vacuum table 1 can directly be tested the pressure between safety check 4 and well inner horizontal, and shows, and easy-to-operat person observes, and then compares pressure-operating condition corresponding relation, determines operating condition, takes suitable counter-measure.

The size of through hole depends primarily on the joint size of negative pressure of vacuum table 1.

Based on above-mentioned structure, need to consider the sealing of connection between negative pressure of vacuum table 1 and through hole 2, only have sealing enough good, ability Measurement accuracy, therefore, in certain embodiments, between through hole 2 and negative pressure of vacuum table 1, Sealing is also set, adopts the seal to seal.

The mode of Sealing has a lot, in certain embodiments, adopts teflin tape, and teflin tape is wrapped in the joint of through hole 2 and negative pressure of vacuum table 1.Because teflin tape is the desirable sealing material of a kind of novelty, its nontoxic, tasteless, good sealing, insulating properties, chemical stability, rotproofness, be applicable to being applied to this self-priming pump.

Or in certain embodiments, Sealing adopts sealing gasket, sealing gasket is positioned over to the joint of through hole 2 and negative pressure of vacuum table 1, because sealing gasket possesses higher expansion and contractibility, therefore can reach good sealing effect.

About the annexation of negative pressure of vacuum table 1 and through hole 2, can adopt equally various ways:

Such as, in certain embodiments, through hole 2 is threaded with negative pressure of vacuum table 1, through hole 2 is tapped hole, negative pressure of vacuum table 1 is screwed on, as long as do being threaded enough meticulously can directly reach certain sealing effect.

Especially, in certain embodiments, the joint of negative pressure of vacuum table 1 is screwed in tapped hole (through hole 2) after being wound around teflin tape, seals more fully.

Again such as: in certain embodiments, negative pressure of vacuum table 1 is inserted in through hole 2, and with the internal surface laminating of through hole 2, as long as do enough meticulous, this laminating also can reach certain sealing effect.

Especially, in certain embodiments, on the laminating surface of contact of the two, sealing gasket is set and seals more fully.

Again such as: through hole 2 and negative pressure of vacuum table 1 weld, and welding can seal preferably, and but, welding is not easy to carry out changeing of negative pressure of vacuum table 1, change and maintenance all not too convenient.

Due to, after self-priming pump draws water and cuts out, the interior effect due to safety check 4 of intake pipe, water in self-priming pump falls less than (safety check 4 cuts out) in well, the vacuum magnitude that Groundwater plane will fall here to the water of water sucking mouth 3 can be seen the depth of water outlet, therefore the pressure between safety check 4 and well inner horizontal is the distance of missile silo inner horizontal and ground level, the value of negative pressure of vacuum table 1 can the accurate response depth of water, such as :-0.07 is exactly 7 meters of left and right of the depth of water,-0.06 is exactly 6 meters of left and right of the depth of water, because the water suction degree of depth of self-priming pump is all generally 1-10 rice, actual water suction 8 to 9 meters of left and right of the degree of depth.Because negative pressure of vacuum table 1 can Measurement accuracy pressure, the sphere of activities of pointer is preferably in 2/3rds scopes in dial plate, and therefore, the graduated range of the negative pressure of vacuum table 1 that this self-priming pump is equipped with is 0 to-0.16MPa.

Next, the pressure-operating condition corresponding relation when vacuum test assembly is comprised to through hole and negative pressure of vacuum table describes:

Situation 1. normal pumpings

When electric moter voltage rotating speed under normal circumstances, the pointer demonstration-0.05Mpa of negative pressure of vacuum table is between-0.08Mpa.

The situation 2. poorly sealed gas leakage in water sucking mouth or bottom tube gas leakage or bottom tube stop up

When electric moter voltage rotating speed under normal circumstances, the pointer of negative pressure of vacuum table is presented between 0 to-0.05Mpa, shows poorly sealed gas leakage, may be the poorly sealed gas leakage in water sucking mouth or bottom tube gas leakage.

The distance of situation 3. determined level faces and ground level

When motor draws water voltage when normal, after cutting off the electricity supply, the closure of check ring of inside, water sucking mouth, safety check front end water pump internal pressure and safety check rear end well inner suction form two kinds of power states, the numerical value of negative pressure of vacuum list index instruction represents the distance of safety check rear end to well inner horizontal, represent the suction distance of missile silo inner horizontal and ground level at that time, the less expression of numerical value of indicating after the cursor backward effect of drawing water is better.

4. voltage instability

When overtension or when too low the suction situation of pump constantly change, negative pressure of vacuum table does not stop moving along with the height of voltage, in the time of brownout, do not reach the motor rotating speed that draws water, pointer is presented between 0 to-0.05Mpa, cuts off the electricity supply if desired.

5. pump part damages

The parts damages of drawing water of water pump inside, rotating speed is normal or slow, and indicator is presented between 0 to-0.05Mpa, on-call maintenance.

6. water feeding of water pump is to the water inlet situation of pressurized tank

Under normal circumstances, the pointer of negative pressure of vacuum table represents between being presented at 0 to-0.05Mpa that pressurized tank do not intake to electric moter voltage rotating speed, as be presented at-0.05Mpa between-0.08Mpa to show pressurized tank water inlet.

7. lack of water whether in well

Electric moter voltage rotating speed under normal circumstances, be presented at-0.09Mpa of negative pressure of vacuum list index represents lack of water between-0.1Mpa, or the pointer violent original position that turns back to suddenly, represent lack of water in well, if be presented at-0.09Mpa of pointer between-0.1Mpa because horizontal plane and ground level distance exceed pump sump scope, in well, lack of water does not reach outlet effect yet.

In addition, in certain embodiments, vacuum test assembly comprises: pressure transducer, processor;

Pressure transducer inserts in the pipelined channel between safety check and water sucking mouth, to test the pressure between safety check and well inner horizontal, and pressure and processor is shared;

Processor, for obtaining pressure and showing pressure from pressure transducer;

Pressure transducer is connected with the housing seal of self-priming pump, and carries out wireless and/or wired connection with processor.Use the method can improve the convenience of automation and reading, and, reach on-the-spot or long-range observation by wired or wireless Placement.

In order further not improve the automaticity of self-priming pump, processor, also be connected with the motor of self-priming pump, and for receiving the electric machine operation state of motor, and according to electric machine operation state, force value and default pressure-operating condition corresponding relation are compared, produce the operating condition of corresponding pressure value, and show operating condition.Thereby force value and operating condition are carried out, from being dynamically connected, passing through pre-set programs automatic decision, without operator oneself judgement, like this, having reduced on the one hand the fault rate of artificial judgement, on the other hand, saved manpower workload and human cost.

The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.

Claims

1. a self-priming pump, it is characterized in that, between water sucking mouth and the safety check of water absorption channel, be provided with vacuum test assembly, for the pressure between test safety check and well inner horizontal demonstration, described self-priming pump connects the card that is printed on pressure-operating condition corresponding relation, and the operating condition in described pressure-operating condition corresponding relation comprises: work well, the poorly sealed or bottom tube gas leakage in water sucking mouth or bottom tube obstruction, voltage instability, pump part damage, water deficiency, the well water degree of depth in pressurized tank water inlet, well.

2. self-priming pump according to claim 1, it is characterized in that, described vacuum test assembly comprises: be arranged at the through hole on housing, described through hole is between described water sucking mouth and described safety check, and be connected with described water absorption channel, described through hole is connected with negative pressure of vacuum table.

3. self-priming pump according to claim 2, is characterized in that, between described through hole and described negative pressure of vacuum table, Sealing is also set.

4. self-priming pump according to claim 3, is characterized in that, described Sealing comprises teflin tape, and described teflin tape is wrapped in the joint of described through hole and described negative pressure of vacuum table.

5. self-priming pump according to claim 3, is characterized in that, described Sealing comprises: sealing gasket.

6. self-priming pump according to claim 3, is characterized in that, described through hole is threaded with described negative pressure of vacuum table; Or described negative pressure of vacuum table inserts in described through hole, and fit with the internal surface of through hole.

7. self-priming pump according to claim 2, is characterized in that, described through hole and the welding of described negative pressure of vacuum table.

8. self-priming pump according to claim 2, is characterized in that, the graduated range of described negative pressure of vacuum table is 0 to-0.16MPa.

9. self-priming pump according to claim 1, is characterized in that, described vacuum test assembly comprises:

Pressure transducer, described pressure transducer inserts in the water absorption channel between described safety check and described water sucking mouth, to test the pressure between described safety check and well inner horizontal, and described pressure and processor is shared;

Described processor, for obtaining described pressure and showing described pressure from described pressure transducer;

Described pressure transducer is connected with the housing seal of described self-priming pump, and carries out wireless and/or wired connection with described processor.

10. self-priming pump according to claim 9, it is characterized in that, described processor, also be connected with the motor of described self-priming pump, also for receiving the electric machine operation state of described motor, and according to described electric machine operation state, described pressure and default described pressure-operating condition corresponding relation are compared, produce the operating condition of corresponding described force value, and show described operating condition.