阅读说明：本技术 一种减少自吸泵干磨的方法及自吸泵控制系统 (Method for reducing dry grinding of self-priming pump and self-priming pump control system ) 是由 马成明 白希杰 郭磊 于 2021-09-17 设计创作，主要内容包括：本申请涉及化工废水处理的领域,尤其是涉及一种减少自吸泵干磨的方法及自吸泵控制系统,其包括获取压力信息,所述压力信息为针对自吸泵在工作时的出液端所采集的压力；基于所述压力信息和预设的压力值判断自吸泵是否处于干磨状态；若是自吸泵出于干磨状态则输出停机信号以控制自吸泵停止。本申请能够减少自吸泵在干磨状态被损坏的几率。(The application relates to the field of chemical wastewater treatment, in particular to a method for reducing dry grinding of a self-priming pump and a self-priming pump control system, wherein the method comprises the steps of acquiring pressure information, wherein the pressure information is acquired aiming at a liquid outlet end of the self-priming pump during working; judging whether the self-priming pump is in a dry grinding state or not based on the pressure information and a preset pressure value; and if the self-priming pump is in a dry grinding state, outputting a shutdown signal to control the self-priming pump to stop. This application can reduce the damaged probability of self priming pump at the dry grinding state.)

1. A method for reducing dry grinding of a self-sucking pump is characterized by comprising the following steps: comprises that

Acquiring pressure information, wherein the pressure information is pressure acquired by a liquid outlet end of a self-priming pump during working;

judging whether the self-priming pump is in a dry grinding state or not based on the pressure information and a preset pressure value;

and if the self-priming pump is in a dry grinding state, outputting a shutdown signal to control the self-priming pump to stop.

2. The method of reducing dry grinding in self-primer pumps of claim 1, wherein: whether the self-priming pump is in a dry grinding state or not is judged based on the pressure information and a preset pressure value, and the method comprises the following steps:

judging whether the pressure information is always smaller than or equal to a preset pressure value within a first preset time;

if yes, the self-priming pump is judged to be in a dry grinding state.

3. The method of claim 1, further comprising, after determining that the self-primer pump is in a dry-milling state:

outputting early warning information, wherein the early warning information comprises at least one of the following forms;

sound format information;

text format information;

and (4) light information.

4. The method of claim 1, wherein the obtaining pressure information comprises at least one of:

acquiring pressure information in real time;

and acquiring pressure information every third preset time.

5. The method of reducing dry grinding in self-primer pumps of claim 1, further comprising: recording the time of outputting the shutdown signal each time;

the time of each output of the shutdown signal is arranged into a table.

6. The method of reducing dry grinding in self-primer pumps of claim 1, further comprising: and injecting liquid into the liquid inlet of the self-sucking pump for a second preset time before starting the self-sucking pump.

7. A self-priming pump control system, comprising:

the pressure sensor is used for detecting the pressure at the liquid outlet end of the self-sucking pump and outputting pressure information;

one or more processors;

a memory;

one or more application programs, wherein the one or more application programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs configured to: the method of performing reduced dry grinding for a self-primer pump of any of claims 1-5.

8. The self-primer pump control system of claim 7 further comprising:

the liquid outlet end of the electromagnetic valve is communicated with the liquid inlet end of the self-sucking pump, the electromagnetic valve is a one-way valve, and the electromagnetic valve and the pressure sensor can perform information interaction with the processor.

9. The self-primer pump control system of claim 7 wherein: the touch screen can perform information interaction with the processor.

Technical Field

The application relates to the field of chemical wastewater treatment, in particular to a method for reducing dry grinding of a self-sucking pump and a self-sucking pump control system.

Background

At present, need carry out the transfer of waste water with the self priming pump in chemical industry waste water treatment field to because the waste water pH valve of different batches changes great, consequently the bottom valve that together sets up with the self priming pump is corroded the damage easily, and then causes the interior entering air of self priming pump easily, makes the self priming pump get into the dry grinding state, and then can cause the mechanical seal to leak, the pump body damages.

Disclosure of Invention

In order to reduce the damaged probability of the self-priming pump in a dry grinding state, the application provides a method for reducing the dry grinding of the self-priming pump.

The application provides a method for reducing dry grinding of a self-sucking pump, which adopts the following technical scheme:

a method of reducing dry grinding in a self-primer pump comprising:

acquiring pressure information, wherein the pressure information is pressure acquired by a liquid outlet end of a self-priming pump during working;

judging whether the self-priming pump is in a dry grinding state or not based on the pressure information and a preset pressure value;

and if the self-priming pump is in a dry grinding state, outputting a shutdown signal to control the self-priming pump to stop.

Through adopting above-mentioned technical scheme, the pressure value that self priming pump goes out the liquid end can reflect self priming pump's operating condition, for example during self priming pump normally drains water, its play liquid end pressure is higher, when self priming pump is in the dry grinding state, because self priming pump does not drain, consequently its play liquid end pressure is very little or be 0, consequently when detecting that self priming pump is in the dry grinding state, stops self priming pump's operation, reduces its time of operation under the dry grinding state, can reduce self priming pump because of the bad probability of dry wear.

Optionally, judge whether self priming pump is in the dry milling state based on pressure information and predetermined pressure value, include:

judging whether the pressure information is always smaller than or equal to a preset pressure value within a first preset time;

if yes, the self-priming pump is judged to be in a dry grinding state.

By adopting the technical scheme, when the measured pressure value of the liquid outlet end of the self-sucking pump is smaller than or equal to the preset pressure value, the self-sucking pump is possibly fluctuated due to measurement errors, so that the self-sucking pump cannot be directly judged to be in a dry grinding state at the moment, measurement needs to be carried out for a period of time, namely whether the pressure information is always smaller than or equal to the preset pressure value in the first preset time is judged, and if yes, the self-sucking pump can be determined to be in the dry grinding state at the moment; the probability of stopping the self-priming pump due to inaccurate judgment caused by measurement errors is reduced.

Optionally, judge that self priming pump is in the dry milling state, later still include:

outputting early warning information, wherein the early warning information comprises at least one of the following forms;

sound format information;

text format information;

and (4) light information.

Through adopting above-mentioned technical scheme, after confirming that the self priming pump is in the dry grinding state, output warning information looks over in order to remind the staff, and, send warning information through the information of different formats, further promote the probability that the staff found this warning information.

Optionally, the acquiring the pressure information includes at least one of the following modes:

implementing the acquisition of pressure information;

and acquiring pressure information every third preset time.

By adopting the technical scheme, the frequency of the acquired pressure information can be reduced by acquiring the pressure information at preset time intervals, so that the pressure analyzed and calculated by the processor is reduced; the mode of obtaining pressure information in real time can get into the dry grinding state at the self priming pump, in time judges out, further reduces the probability that the self priming pump got into the dry grinding state.

Optionally, a method for reducing dry grinding of a self-priming pump further comprises: recording the time of outputting the shutdown signal each time;

the time of each output of the shutdown signal is arranged into a table.

Through adopting above-mentioned technical scheme output shutdown signal then self priming pump to shut down, the time of record output shutdown signal at every turn represents the time of judging the self priming pump entering dry grinding state at every turn promptly, arranges into the table and is convenient for the staff and looks over and then judges the sewage treatment system stability of self priming pump place in a certain time.

Optionally, a method for reducing dry grinding of a self-priming pump further comprises: and injecting liquid into the liquid inlet of the self-sucking pump for a second preset time before starting the self-sucking pump.

Through adopting above-mentioned technical scheme, pour into liquid in order evacuation self priming pump feed inlet gas into to the feed inlet of self priming pump before the self priming pump starts, can further reduce the probability that self priming pump got into the dry grinding state.

In a second aspect, the present application provides a self-primer pump control system.

A self-priming pump control system adopts the following technical scheme:

a self-primer pump control system, comprising: the pressure sensor is used for detecting the pressure at the liquid outlet end of the self-sucking pump and outputting pressure information;

one or more processors;

a memory;

one or more application programs, wherein the one or more application programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs configured to: the method for reducing dry grinding of a self-priming pump is performed.

Optionally, a self priming pump control system further comprises: the liquid outlet end of the electromagnetic valve is communicated with the liquid inlet end of the self-sucking pump, the electromagnetic valve is a one-way valve, and the electromagnetic valve and the pressure sensor can perform information interaction with the processor.

Through adopting above-mentioned technical scheme, the check valve is used for filling into liquid to the feed liquor end of self priming pump, and the check valve can reduce the inside liquid reflux of filling into self priming pump, promotes the efficiency of filling into liquid.

Optionally, a self priming pump control system further comprises: and the touch screen can perform information interaction with the processor.

By adopting the technical scheme, the table of the pressure information, the warning information and the time of sending the stop signal at each time can be checked through the touch screen, so that the on-site workers can check and call conveniently, and convenience and practicability are improved.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the pressure value of the liquid outlet end of the self-sucking pump can reflect the working state of the self-sucking pump, for example, when the self-sucking pump normally drains water, the pressure of the liquid outlet end of the self-sucking pump is higher, and when the self-sucking pump is in a dry grinding state, the pressure of the liquid outlet end of the self-sucking pump is very small or 0 because the self-sucking pump does not drain water, so that when the self-sucking pump is detected to be in the dry grinding state, the self-sucking pump is stopped to continue to operate, the running time of the self-sucking pump in the dry grinding state is shortened, and the probability of damage of the self-sucking pump due to dry wear can be reduced;

2. when the measured pressure value of the liquid outlet end of the self-sucking pump is smaller than or equal to the preset pressure value, the self-sucking pump may fluctuate due to measurement errors, so that the self-sucking pump cannot be directly judged to be in a dry grinding state at the moment, measurement needs to be performed for a period of time, namely whether the pressure information is always smaller than or equal to the preset pressure value within the first preset time is judged, and if yes, the self-sucking pump can be determined to be in the dry grinding state at the moment; the probability of stopping the self-priming pump due to inaccurate judgment caused by measurement errors is reduced;

3. after confirming that the self-priming pump is in the dry grinding state, output warning information in order to remind the staff to look over, and, send warning information through the information of different formats, further promote the probability that the staff found this warning information.

Drawings

FIG. 1 is a schematic flow diagram of a method of reducing dry grinding in a self-primer pump in an embodiment of the present application;

FIG. 2 is a schematic diagram showing the connection of a self-priming pump control system in an embodiment of the present application.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

A person skilled in the art, after reading the present specification, may make modifications to the present embodiments as necessary without inventive contribution, but only within the scope of the claims of the present application are protected by patent laws.

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In addition, the term "and/or" herein is only one kind of association relationship describing an associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship, unless otherwise specified.

The embodiment of the application discloses a method for reducing dry grinding of a self-priming pump, and with reference to fig. 1, the method comprises a step S101, a step S102 and a step S103, wherein:

and S101, acquiring pressure information, wherein the pressure information is acquired aiming at a liquid outlet end of the self-priming pump during working.

Specifically, the self priming pump is under normal during operation and dry grinding state, and its play rivers size of liquid end is different, and consequently produced pressure is also different, consequently detects the play liquid end pressure of self priming pump at the during operation, is convenient for judge whether the self priming pump is in the dry grinding state.

And S102, judging whether the self-priming pump is in a dry grinding state or not based on the pressure information and a preset pressure value.

Specifically, the preset pressure value can be artificially modified, and when the self-priming pump is in the dry grinding state, the liquid outlet end of the self-priming pump is also likely to have weak water flow, so that the preset pressure value is set to be greater than 0, and the accuracy of judging whether the self-priming pump is in the dry grinding state or not can be improved.

And S103, outputting a stop signal to control the self-priming pump to stop if the self-priming pump is in a dry grinding state.

Specifically, the output stop signal is stopped with control self priming pump, can reduce the time that self priming pump continues to operate under the dry grinding state, has played the guard action to self priming pump.

In this application embodiment, during actual production, the probability that the dry grinding state appears in the self priming pump is great, consequently through the pressure value that acquires self priming pump liquid outlet end and judge the mode whether the self priming pump is in the dry grinding state with predetermined pressure value to and in time output shutdown signal shuts down with control self priming pump when the self priming pump gets into the dry grinding state, reduced the time of self priming pump at the dry grinding state continuous operation, can reduce the self priming pump and beat and the harm that causes the self priming pump at the dry grinding state sky.

And step S1022, acquiring pressure information every third preset time.

Further, step S102 specifically includes:

judging whether the pressure information is always less than or equal to a preset pressure value in a first preset time;

if yes, the self-priming pump is judged to be in a dry grinding state.

For the embodiment of the application, when the measured pressure value of the liquid outlet end of the self-sucking pump is less than or equal to the preset pressure value, the fluctuation possibly caused by the measurement error is also possible, so that the self-sucking pump cannot be directly judged to be in a dry grinding state at the moment, measurement needs to be carried out for a period of time, namely whether pressure information is always less than or equal to the preset pressure value within the first preset time is judged, and if yes, the self-sucking pump can be determined to be in the dry grinding state at the moment; the probability of stopping the self-priming pump due to inaccurate judgment caused by measurement errors is reduced.

Further, the preset pressure value is not limited in any way in the embodiments of the present application, and is specifically determined by the displacement of the self-priming pump and the type of the sewage to be treated. The first preset time should be greater than 2S and less than 1 minute, but the specific duration of the first preset time is not limited in this embodiment, and is determined by the stability of the measured pressure information, the density of impurities in the sewage, and the specific ambient temperature.

Further, the manner of acquiring the pressure information in step S101 includes at least one of step S1011 (not shown in the figure) and step S1022 (not shown in the figure), wherein:

step S1011, acquiring pressure information in real time.

Specifically, acquire pressure information in real time and can in time discover whether the self priming pump gets into the dry grinding state, can reduce the probability that the self priming pump got into the dry grinding state and did not detect, reduced the time of self priming pump operation under the dry grinding state, if the self priming pump gets into the dry grinding state, then from detecting its time pressure of going out the liquid end be less than or equal to when predetermineeing the pressure value, the self priming pump is first time of predetermineeing at the longest time of dry grinding state operation.

And step S1012, acquiring pressure information every third preset time.

Specifically, the third preset time can be set and modified manually, but in this embodiment, no limitation is made on the specific value of the third preset time. For example, in the case of wastewater with too high or too low PH, the wastewater is more corrosive to the bottom valve, so that when such wastewater is treated, the third preset time can be set to be shorter, for example, 30S; for a neutral effluent, the corrosiveness of the bottom valve is low, so the third predetermined time can be set longer, for example 5 minutes. In this way, the frequency of processing the acquired pressure information by the processor can be reduced, and the calculation burden of the processor is further reduced, so that the processing capacity of the processor is redundant.

Further, judge that self priming pump is in the dry milling state, later still include:

outputting early warning information, wherein the early warning information comprises at least one of the following forms;

sound format information;

and (4) character format information.

Specifically, after judging that the self priming pump gets into the dry grinding state, except that controlling the self priming pump and shutting down, still need output early warning information so that the staff can discover. For the types of the warning information, the warning information can be in any one of three formats, can also be in any two combinations, or can include all three formats, and for the mode of selecting any two combinations and including all the formats, the probability of the warning information being discovered by the staff can be further improved, so that the staff can timely process the fault.

Further, after step S103, the method further includes:

recording the time of outputting the shutdown signal each time;

the time of each output of the shutdown signal is arranged into a table.

Specifically, in the embodiment of the present application, the time of each stop signal is recorded, that is, the time of each self-priming pump entering the dry grinding state is recorded; through the form of finishing into, the staff of being convenient for looks over in certain time, and the self priming pump takes place the time of dry grinding and takes place the interval of the adjacent time of dry grinding at every turn, and the staff of being convenient for makes statistics of the frequency that the self priming pump takes place the dry grinding state and the stability of self priming pump work.

In this application embodiment, in order to further reduce the probability that self priming pump gets into the dry grinding state, still include before starting self priming pump: and injecting liquid into the liquid inlet of the self-sucking pump for a second preset time.

Specifically, before starting the self priming pump, pour into liquid into to the inlet of self priming pump to the gas of discharge self priming pump inlet department lasts the second and predetermines the time, is convenient for arrange the air of inlet department to the greatest extent, reduces the probability that gaseous entering self priming pump cavity, has reduced the probability that the self priming pump got into the dry grinding state.

The above embodiments describe a method of reducing dry abrasion of a self-primer pump from a method perspective and the following embodiments describe a self-primer pump control system from a system perspective, with specific details of the following embodiments.

The embodiment of the present application provides a self priming pump control system, refer to fig. 2, it includes: pressure sensor P, solenoid valve, touch-sensitive screen, processor and memory, wherein:

and the pressure sensor P is used for detecting the pressure at the liquid outlet end of the self-sucking pump and transmitting pressure information.

The liquid outlet end of the electromagnetic valve is communicated with the liquid inlet end of the self-sucking pump, and the electromagnetic valve is a one-way valve and is used for injecting liquid into the liquid inlet end of the self-sucking pump when the electromagnetic valve is opened.

The touch screen can show the pressure information of the liquid outlet end of the self-priming pump, and can modify the first preset time, the second preset time, the third preset time and the preset pressure value, so that sewage of different types can be treated conveniently. Meanwhile, the touch screen can also display the warning information in a character format, and can also display the time when the processor sends the stop signal each time and the table formed by sorting, so that the touch screen is convenient for workers to take on site.

Further, the pressure sensor P1, the touch screen and the solenoid valve can all interact with the processor.

Further, the processor may be a PLC controller with data processing capability, or an MCU single chip or a CPU processor, which is not limited in this embodiment.

A memory;

one or more application programs, wherein the one or more application programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs configured to: a method of reducing dry grinding for a self-primer pump of the above method embodiment is performed.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.