CN113187740A - System for realizing automatic pressurization by using water pump compressed air to push water flow switch - Google Patents

Abstract

A system for realizing automatic pressurization by using a water pump to compress air to push a water flow switch; the invention relates to an automatic booster pump control system; the problem that the water flow switch is matched with a single pump to pump unnatural flowing water and automatically pressurize can be solved; the impeller of the water pump is utilized to store air pressure in the air storage tank or the three-way cut-off branch pipe, the air storage tank or the three-way cut-off branch pipe is positioned at the rear end of the water flow switch, when the water tap is opened, air pressure in the air storage tank or the three-way cut-off branch pipe releases and pushes water, the water flows towards the direction of the water flow switch under the action of the check valve at the water inlet of the water pump and pushes the water flow switch, the water flow switch is connected with the power supply of the relay, the relay is connected with the power supply of the water pump, and the water pump works and is pressurized; when the water tap is closed, the water flow switch is reset and the power supply of the relay is cut off, the water pump stops working, and the process is repeated to form a set of automatic pressurizing water pump which can be used for automatically pressurizing natural flowing water and non-natural flowing water. The controllable water supply device has the advantages of low cost, stable controllable performance and wide application, and is suitable for the fields of rural family water supply, farmland irrigation, tap water pressurization, industrial factory industry, building industry and the like.

Description

System for realizing automatic pressurization by using water pump compressed air to push water flow switch

Technical Field

The invention relates to an automatic booster pump, in particular to a control system of the automatic booster pump.

Background

. Household automatic booster pump classification

Firstly, the working principle of a water flow type automatic booster pump is as follows: the water flow switch (water flow inductor) is pushed by the flow of the water pipe, the water flow switch transmits signals to a controller in the water pump, the controller controls the water pump motor to work, and the water pump works to pressurize and supply water. The disadvantages are as follows: 1. the performance is unstable, because the pipeline or water equipment sometimes have the air to exist, lead to the rivers switch to swing back and forth to make the water pump frequently open and stop 2. use not extensively, need have the flowing water in the pipeline to promote the rivers switch and just can work, can not upwards pressurize the water supply to stagnant water (non-flowing water).

The working principle of the pressure type automatic booster pump is as follows: the pressure switch (with upper limit pressure and lower limit pressure) in the water pump detects the pressure in the water pipe to control the water pump, and when the pressure in the water pipe reaches the upper limit pressure of the pressure switch of the water pump, the water pump stops working. When the pressure is lower than the lower limit of the water pump pressure switch, the water pump is started. The disadvantages are as follows: 1. the pressure switch can not be separated from the mechanical transmission part, and the mechanical transmission part is fatigued under the pressure action of water pressure for a long time, so that the pressure parameter is changed. The water pump is not stopped due to the fact that the upper limit pressure is not stopped, the lower limit pressure is not started 2, water shortage protection is not realized 3, a pressure switch contact is easy to sinter, the water pump cannot normally work 4, an impeller is not used for a long time and is easy to be blocked (water rusty) with a pump body 5, when water is used at a small flow rate, the pressure switch ceaselessly makes a round trip between the upper limit pressure and the lower limit pressure, the water pump is frequently started and stopped, if water is discharged from a faucet and is suddenly reduced by 6 degrees, if water is slightly seeped from a pipeline at the rear end of a water outlet of the water pump or the faucet, the water pump is repeatedly started and stopped when the pressure is reduced to the lower limit pressure. 7. If someone turns off the water valve at the front end of the water inlet of the water pump by mistake, the water pump cannot be stopped.

And thirdly, the electronic pressure-stabilizing type automatic booster pump works according to the working principle that the water flow in the water pipe is detected through a water flow sensor and a pressure switch, the pressure switch supplies a signal to a water pump controller to control the start and stop of the water pump, and when the pressure in the water pipe is reduced, the water pump starts to work. Meanwhile, the water flow switch detects that water flows, and the water pump works. When the water usage is slowly reduced and the pressure reaches the upper limit, the pressure switch provides a stop signal to the controller, but the water flow switch is still provided with an operating signal, only the water flow is reduced. The water pump controller also controls the water pump to work until the water flow switch cannot detect the water flow and the pressure switch reaches the upper limit pressure, and the water pump stops working. The disadvantages are as follows: 1. the cost is slightly higher than 2, the start-stop response is not timely 3, the water pump water inlet water shortage shutdown protection response is not timely, and the shutdown protection is generally required to be carried out after the water inlet water shortage for twenty seconds to ten minutes or even longer. 4. If the pipeline or the tap at the rear end of the water outlet of the water pump slightly seeps water and the pressure is reduced to the lower limit pressure, the water pump is repeatedly started and stopped. 5. If someone turns off the water valve at the front end of the water inlet of the water pump by mistake, the water pump cannot be stopped.

And fourthly, the working principle of the variable-frequency constant-pressure water pump is that the pressure sensor senses the pressure in the water pipe and outputs an electronic signal to the frequency converter to control the rotating speed of a motor of the water pump, so that the constant-pressure effect is achieved. The disadvantages are as follows: 1. the cost is extremely high 2, the water pump water inlet lack of water shutdown protection response is not timely, and the shutdown protection is generally required to be carried out for twenty seconds to ten minutes or even longer after the water inlet lacks water. 3. If the pipeline or the tap at the rear end of the water outlet of the water pump slightly seeps water and the pressure is reduced to the lower limit pressure, the water pump is repeatedly started and stopped. 4. If someone turns off the water valve at the front end of the water inlet of the water pump by mistake, the water pump cannot be stopped.

Disclosure of Invention

The invention uses the compressibility of air to be larger than that of water, uses the impeller of the water pump to compress the air in the air storage tank (or the three-way cut-off branch pipe), uses the air as power to push water, and the water pushes the water flow switch to start and stop the water pump, thus being applicable to various types of single pumps. The main functional control accessories are: the device comprises an exhaust valve, a vertical check valve, a gas storage tank (or a three-way cutoff branch pipe), a water hammer eliminator (which can be optionally installed or cancelled), a water flow switch (of a water-electricity separation type), a relay (which is normally opened by large current), a normally open microswitch and a power-off delay relay (with the adjustable delay time of 0-30 seconds). When the water faucet is opened, compressed air in the air storage tank releases pressure to push water, the water pushes the water-electricity separation type water flow switch, the water flow switch is connected with the power-off delay relay coil, the normally open contact of the power-off delay relay is closed, the large-current relay coil is connected, the normally open contact of the large-current relay is connected with the power supply of the water pump, and the water pump is started; when the water discharging faucet is closed, no water flows in the pipeline, the water flow switch is reset to cut off the output, and the water pump stops working; the automatic booster pump is formed in a cycle, wherein the water pump of the water discharging tap is opened to work, and the water pump of the water discharging tap is closed to stop working. The power-off delay relay plays a temporary standby role when a water source (non-natural flowing water) is pumped to be dead, when a pipeline at the rear end of the outlet of a water pump or a water discharging faucet has slight water seepage, the delay time needs to be adjusted according to the water seepage size, the delay time is adjusted to be shorter as the water seepage is slowed down, and the power-off delay is reset to zero after the water seepage is repaired in the later period. When the water pump inlet is in water shortage, no water passes through the water flow switch, the water flow switch resets under the action of the thrust of the spring to cut off the output, and the two relays are powered off, so that the power supply of the water pump is cut off, and the water shortage shutdown protection effect is realized.

The design is universal to various complicated pressurization conditions and roughly divided into two types: the water pump is directly installed and used when the pressure of tap water is insufficient, delay power-off is not needed to be started regardless of slight water seepage at the rear end of the outlet of the water pump, the water pump is automatically stopped for protection when water is deficient, and when the tap water comes again, the system automatically enters a normal state. Secondly, pumping a dead water source (unnatural flowing water), and if slight water seepage exists at the rear end of the outlet of the water pump, adjusting the delay time according to the water seepage; when the water source is short of water, the automatic stop protection is carried out, and when the water source is supplied with water again, the normally open button switch is required to be pressed for a plurality of seconds until the water pump discharges water. This design can realize automatic control water pump, and the protection of lack of water prevents that the water pump from frequently opening and stopping. The anti-jamming and anti-rust treatment is carried out, a time control switch (controlled to be in seconds) is incorporated into the coil input end of the high-current relay, and the high-current relay is started once within set time (generally, one time is forcibly started within 72 hours, and ten seconds are carried out each time). The cycle time and the time length can be set or cancelled at will. Remarking: the scheme of the invention is widely used, and can be used for pumping dead water (non-natural flowing water) sources such as well water, river water, ponds and the like, and the pressure of tap water is insufficient and the like.

The invention adopts the principle that the water pump compresses air to push the water flow switch, thereby obtaining the following beneficial effects: 1. the water pump has the advantages of few accessories, low cost 2, stable performance, extremely low fault 3, timely 4 start-stop responses, timely 5 water-deficient stop protection responses, automatic standby state 6 when the water source is water again after water-deficient stop protection, anti-blocking machine, anti-rust technology 7, no water tap water pump work (except for anti-rust forced operation) 8 when the pipeline at the rear end of the water pump outlet is not opened for a long time, energy conservation, low cost, low later maintenance cost, low fault rate 9, low cost compared with a frequency conversion pump, low later maintenance cost and low fault rate.

Explanation of the electrical and water path structure design schematic diagram: the design is suitable for automatic pressurization 1 of two types of water sources, water flows out, the water pressure is small, if the pressure of tap water is insufficient, the water flow out of a faucet is small, the pressure of natural running water is small, the running water is called live water 2 for short, the pressure of tap water cannot reach the height of a floor, or a dead water source (non-natural flowing water) is called dead water for short. Description of the drawings: fig. 1 is a schematic diagram of waterway design. Fig. 2 is an electrical schematic. Fig. 1 notes: firstly, when the gas storage tank or three-way cut-off branch pipe is required to be vertically and upwards installed, if the cut-off branch pipe is a dead water source (non-natural flowing water), the bottom of the water inlet of the water pipe is additionally provided with a check valve, and the water hammer eliminator is selectively installed or cancelled

Firstly, live water pressurization: as shown in the water path design principle diagram of fig. 1, the water pump can be directly installed on a main pipeline needing pressurization, when a water tap is turned on, compressed air in an air storage tank or a three-way shutoff branch pipe is rapidly released, because a check valve S1 is installed at the inlet of the water pump, air pushes water towards the direction of the water tap, the water pushes a water flow switch, the water flow switch is switched on (as shown in the electrical principle diagram of fig. 2) to supply power to a power-off delay relay coil, the power-off delay relay contact K1 is closed and switched on a large-current relay coil, the large-current relay contact K2 is closed and switched on the power supply of the water pump, and the water pump works. When the water discharging faucet is closed, the water flow switch is rapidly reset and cuts off a coil power supply of the power-off delay relay under the action of self spring force, the power-off delay relay contact K1 is cut off and cuts off a coil power supply of a large-current electric appliance, the large-current relay contact K2 is cut off and cuts off a power supply of a water pump, the water pump stops working, in the process of closing the water discharging faucet and cutting off the power supply of the water pump, the check valve S3 (shown as a water path design principle diagram S3 in figure 1) plays a role in preventing water from impacting the water flow switch due to inertial backflow, the effect of protecting the water flow switch is played, if the water hammer eliminator is installed at the tail end of a water pipe, the inertial water hammer can be effectively reduced, namely, the check valve S3 and the water hammer eliminator can exist simultaneously or independently.

Water-deficient shutdown protection during running water pressurization: when the water supply pipeline lacks water, open the tap that drains, compressed air in the gas holder or the tee bend pipe that dams releases rapidly, promote rivers switch on power makes the water pump work, under the condition that the tap water can not be inhaled after the water pump work several seconds, inspiratory air is discharged from discharge valve, remaining a little water yield is blockked by check valve S2, thereby cut off the water pump power, at this in-process, automatic exhaust valve plays the exhaust effect, because the water pump opens the tap that drains when the water supply pipeline lacks water, the water pump can work several seconds, this several seconds water pump can inhale the air in the tap water pipeline, if do not have automatic exhaust valve, inspiratory air can promote rivers switch repeatedly, thereby prevent extension water shortage shutdown guard time. Meanwhile, the check valve S2 prevents a small amount of residual water in the pipeline from interfering with pushing the water flow switch, and the water pump is started and stopped intermittently, if the automatic exhaust valve and the check valve S2 are not arranged, a small amount of water and air can move back and forth when the tap water pipeline is in water shortage, the water pump is prevented from being started and stopped repeatedly to prolong the water shortage shutdown protection time, even the water pump cannot be stopped under special conditions, and because the check valve S2 is a vertical check valve, a spring is arranged inside the check valve, and the action of the spring force can prevent the small amount of residual water in the pipeline and the air sucked by the water pump from interfering with the malfunction of the water flow switch when the tap water pipeline is in water shortage. When the tap water comes again, the automatic exhaust valve plays a role in automatic exhaust, but a section of pipeline from the check valve S3 to the water discharge tap still has a section of air, namely, a section of air is respectively arranged in front of and behind the water flow switch, namely, the air at the tail end of the pipeline and the air at the two positions of the air storage tank or the three-way cut-off branch pipe, at the moment, the check valve S2 and the check valve S3 play a role in preventing the two positions of air from fluctuating to interfere the repeated on-off of the water flow switch and frequently start and stop the water pump, two check valves S2 and S3 and an exhaust valve are arranged, when the tap water comes again, after the exhaust valve exhausts the air, the water pushes the water flow switch to switch on and off the power delay relay coil, the power-off delay relay contact K1 is closed and is switched on the heavy current relay coil, the heavy current relay contact K2 is closed and is switched on the power supply of the water pump, when the water flow is reduced to a small flow, the water flow switch is reset and is switched off under the action of the self spring force, and the whole automatic pressurization control system enters a normal state. Preventing blocking and rust-proof treatment: as shown in figure 2, the input end of a time-controlled switch (controlled to be second) is connected in parallel with 220V alternating current, the output end of the time-controlled switch is connected in parallel with the coil end of a high-current relay, forced starting is carried out twice every week, ten seconds of work are carried out every time, and time can be adjusted randomly or cancelled.

Secondly, pressurizing dead water: as shown in figure 1, a check valve S1 is additionally arranged at the bottom of the water inlet of the water pipe to prevent water from flowing backwards into a water source, and a gas storage tank or a three-way intercepting branch pipe is vertically and upwards arranged. When the water tap is turned on, compressed air in the air storage tank or the three-way shutoff branch pipe is rapidly released, because the check valve S1 is installed at the inlet of the water pump, air pushes water towards the direction of the water tap, the water pushes the water flow switch, the water flow switch is switched on (shown in an electrical schematic diagram of figure 2), the power supply is supplied to the power-off delay relay coil, the power-off delay relay contact K1 is closed and the large-current relay coil is switched on, the large-current relay contact K2 is closed and the power supply of the water pump is switched on, and the water pump works. When the water discharging faucet is closed, the water flow switch is rapidly reset under the action of the self spring force and cuts off the coil power supply of the power-off delay relay, the contact K1 of the power-off delay relay is cut off and cuts off the coil power supply of a large-current electric appliance, the contact K2 of the large-current relay is cut off and cuts off the power supply of a water pump, the water pump stops working, and in the process of closing the water discharging faucet and cutting off the power supply of the water pump, the check valve S3 (shown in a water path design principle diagram S3 in figure 1) plays a role in preventing water from impacting the water flow switch due to inertial backflow and playing a role in protecting the water flow switch. If the water hammer eliminator is arranged at the tail end of the water pipe, the inertia water hammer can be effectively reduced, namely the check valve S3 and the water hammer eliminator can exist simultaneously or independently.

And (3) water-deficient shutdown protection during dead water pressurization: when the water source pipeline lacks water, open the tap that drains, compressed air in the gas holder or the tee bend shutoff branch pipe releases rapidly, promote rivers switch on power makes the water pump work, the water pump can not inhale the water in the water source pipeline of dying after working several seconds, inspiratory air is discharged from discharge valve, remaining a little water yield is blockked by check valve S2, thereby cut off the water pump power, at this in-process, automatic exhaust valve plays the exhaust effect, because the tap that drains is opened to the water pump when the water source lacks water, the water pump can work several seconds, this several seconds water pump can inhale the air in the water source pipeline, if there is not automatic exhaust valve, inspiratory air can promote rivers switch repeatedly, thereby prevent extension water shortage shutdown guard time. Meanwhile, the check valve S2 prevents a small amount of residual water in the pipeline from interfering with pushing the water flow switch, and the water pump is started and stopped intermittently, if the automatic exhaust valve and the check valve S2 are not arranged, a small amount of water and air can move back and forth when the water source pipeline is in water shortage, the water pump is prevented from being started and stopped repeatedly to prolong the water shortage shutdown protection time, and even the water pump cannot be stopped under special conditions, and because the check valve S2 is a vertical check valve, a spring is arranged in the check valve, and the action of the spring force can prevent the small amount of residual water in the pipeline and the air sucked by the water pump from interfering with the false operation of the water flow switch when the water source is in water shortage. When the water source has water again, the normally open button switch needs to be pressed for a plurality of seconds, and the normally open button switch is loosened when the exhaust valve has no air to be discharged or water flows out from the water drain faucet. When the pipeline at the rear end of the outlet of the water pump or the water discharging tap slightly leaks water, the delay time of the power-off delay relay needs to be adjusted, the delay function is to store enough air pressure in the air storage tank or the three-way cut-off branch pipe so as to prevent the air in the air storage tank or the three-way cut-off branch pipe from having no pressure due to water leakage in a short time, and the delay time is adjusted according to the water leakage size, so that the smaller the water leakage is, the shorter the delay time is. The time delay can be used as an emergency, and after the water is not leaked after the later-stage treatment, the time delay of the power-off time delay relay is reset to zero.

Claims (2)

1. The utility model provides an automatic control system and various single pumps make up full-automatic booster pump which characterized in that: the water in the pipeline is driven by the impeller of the water pump to compress the air in the air storage tank or the three-way cut-off branch pipe, the compressed air pushes the water, the water pushes a water flow switch (a water flow sensor), the water flow switch outputs an electric signal to a water pump electronic element control part to control the water pump to start, when a water discharge faucet is closed, no water flows through the water flow switch, the water flow switch resets under the action of self spring force, so that the water pump electronic element control part is cut off, the water pump is controlled to stop, when a water inlet of the water pump is short of water, the water discharge faucet is opened, the water pump sucks air after working for several seconds and discharges the air from an exhaust valve, meanwhile, a small residual water amount in the pipeline is prevented by the spring elasticity of a vertical check valve, the water flow switch resets rapidly, the electric signal is cut off, the whole system automatically enters a water shortage stop protection state, when water comes in the pipeline again, the exhaust valve automatically exhausts the air, after the air is exhausted, water passes through the water flow switch, the water flow switch is connected with an electric signal to control the electronic element of the water supply pump, the water pump is started, when the water flow in the pipeline is reduced and is close to stop, the water flow switch resets under the action of the self spring force to cut off the electric signal, and the whole process automatically enters a normal standby state.

2. When a water source (unnatural flowing water) is drained, the water source automatically enters a shutdown protection state after water shortage, when the water source has water again, a normally open button switch needs to be pressed for a plurality of seconds, the automatic exhaust valve exhausts the air and can be released, and the whole process only needs one-key reset to enter a normal standby state; when the pipeline at the rear end of the outlet of the water pump or the water discharging faucet has slight water seepage, the delay time of the power-off delay relay needs to be adjusted, and after the water seepage is avoided after the later-stage treatment, the delay time of the power-off delay relay is reset to zero.

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