An intelligent sand-measuring mobile air-lift pump and its usage method

Abstract

The present invention relates to the field of liquid treatment, and specifically to an intelligent sand-measuring mobile air-lift pump and its usage method, which includes a double-hole air-lift pump and an intelligent part. First, an air-lift pump with lifting and moving functions is invented; it is combined with a group of sensors for automatically measuring sand to sense the amount of sand, slag, and dirt in the liquid; and it is combined with another group of air-lift pump sensors to sense the operating state of the air-lift pump and lift the air-lift pump. That is, through two groups of automatic measurement and lifting devices, the air-lift pump can be intelligently started and stopped to discharge dirt according to the amount of sand, slag, and dirt under the liquid; and when it is sensed that there is a blockage due to dirt, by raising the air-lift pump and performing backwashing, the dirt blocking the main liquid pipe can be cleared out; thus achieving the function of intelligently controlling the air-lift pump. The present invention solves the disadvantages that the amount of dirt cannot be sensed under the liquid and the general air-lift pump is buried by a lot of sand and slag and cannot be air-lifted, and at the same time, it well solves the problem of blockage of the air-lift pump. The present invention reduces carbon emissions through energy-saving and pollution-reducing technologies.

Description

Technical Field

[0001] The present invention relates to the technical field of liquids, and particularly to an intelligent sand-measuring mobile air-lift pump and a method for using the same. Background Art

[0002] During the liquid transportation process, it is often necessary to clean out the sediment and dirt under the liquid. The traditional method is to use electric pumps (such as dirt pumps, submersible sewage pumps, screw pumps, etc.) for transportation. However, since the dirt often entangles the impeller and causes it to be unable to lift, an impellerless lifting device is needed.

[0003] Although there are already ordinary air-lift pumps that can lift dirt by air-lift, there are still times when they get blocked and cannot be used, and manual disassembly of the air-lift pump is required for cleaning, which is time-consuming and laborious. Therefore, an automatic cleaning function is needed.

[0004] Since neither the dirt pump nor the ordinary air-lift pump can measure whether there is sediment and dirt that needs to be lifted under the liquid, the air-lift device can only be continuously or regularly turned on. This not only wastes a large amount of electrical energy but also causes a large amount of water resource waste, which does not conform to the direction of carbon emission reduction and carbon neutrality advocated by the country. Therefore, an energy-saving and emission-reducing intelligent air-lift pump is needed.

[0005] In Example 1, the aerated grit chamber is the most commonly used sand removal facility in urban sewage treatment plants in China. The sand suction equipment is generally installed on the bridge truss. The biggest problem is that the sand suction is not thorough. The reason is that it is difficult for sand grains to settle at the water inlet end, but a large amount of them are deposited at the water outlet end. The sand suction equipment of the aerated grit chamber moves back and forth between the inlet and outlet ends to suck sand. Too much sand and slag may cause damage to the sand suction equipment, and when there is too little sand, the sand suction effect cannot be achieved. Therefore, in actual operation, the sand grains at the water outlet end of the aerated grit chamber will accumulate more and more. Especially when it rains or snows, the sand and slag increase instantaneously, burying the sand suction equipment and causing the sand suction equipment to stop working. Eventually, the pool can only be emptied and the sand is cleared manually. Therefore, during operation, the sand suction equipment needs to continuously adjust the sand suction height and the start / stop time according to the accumulation degree of sand and slag in the sand collection tank, so as to achieve the required sand suction effect while protecting the equipment.

[0006] In Example 2, at present, a large amount of water is used to mix asphalt, mud, and slag in the oil sedimentation tank, and it is pumped out through a dirt pump and then sent to the sewage treatment plant for treatment. Since the sewage pump needs to be mobile, a large amount of water is required to dilute the dirt together to be pumped out, consuming a large amount of energy and funds. Therefore, a device that can pump out high-concentration dirt asphalt and can also be lifted with a small amount of added water is needed. Improve the lifting efficiency, save energy and reduce emissions, and reduce carbon emissions.

[0007] Therefore, it is necessary to improve the existing technology and invent a new-structured intelligent sand-measuring mobile air-lift pump to solve the above existing problems. Summary of the Invention

[0008] The object of the present invention is to overcome the above-mentioned deficiencies existing in water pumps and air-lift pumps in the prior art, and to provide an intelligent sand-measuring air-lift pump and its usage method, which have the advantages of reasonable structural design, safety, convenient operation and use, low maintenance cost, high degree of automation and intelligence, etc., can realize automatic cleaning of dirt at the upper, middle and lower parts of the liquid, and can be used normally in the above-mentioned harsh environment.

[0009] In order to solve the problems in the background technology and achieve the above object, the present invention is realized by adopting the following technical solutions:

[0010] First, a measuring device that touches and measures the thickness of sand, slag and dirt is used to lift and suck dirt by adjusting the height of the dirt-sucking device according to the amount of sand, slag and dirt, thus solving the problem of energy-saving in dirt suction; and when there is too much sand, slag and dirt and the dirt-sucking device or the air-lift pump port is buried, the dirt-sucking device or the air-lift pump is lifted to make the dirt-sucking device or the air-lift pump suck dirt normally above the sand, slag and dirt again.

[0011] Second, by increasing the diameter of the air-lift liquid pipe and the double-hole structure, and cooperating with the lifting air-lift pump and backwashing, the problem of air-lift pump blockage is solved.

[0012] An intelligent sand-measuring mobile air-lift pump includes: 1. Double-hole air-lift pump; 2. Fixed and mobile air-lift pump support; 3. Air-lift pump intelligent device; 4. Fan; 5. Automatic control system; 6. Liquid pool.

[0013] The double-hole air-lift pump: includes a lifting liquid pipe for lifting the gas-liquid mixture; two air pipes are connected to the bottom of the lifting liquid pipe at intervals. Normally, an appropriate amount of gas is introduced to mix with the liquid for lifting dirt. When blocked, the air volume and pressure are increased to dredge the lifting liquid pipe; two aeration pipes are installed near the lifting liquid pipe. Normally, an appropriate amount of gas is introduced to mix with the liquid dirt for stirring, which is beneficial to the lifting of dirt. When the liquid pipe is buried by dirt, the air volume and pressure are increased to clean the dirt around the lifting liquid pipe to ensure that the liquid pipe can normally suck sand; the air-lift pump fixing plate plays a role in fixing the air-lift pump pipe; the function of the double-hole air-lift pump is that the main function of the double-hole air pipe is to cut the dirt and then lift the dirt by air, effectively preventing large dirt from blocking the lifting liquid pipe, and having a backwashing function, which is the main difference from ordinary air-lift pumps.

[0014] The fixed and mobile air-lift pump support; includes an air-lift pump support main board and an air-lift pump lower support for fixing the air-lift pump, the moving and lifting channel of the sand-measuring protection pipe, and the sand-blowing pipe; an air-lift pump upper support for fixing the lifting and measuring device, the sand-measuring power device, the sand-measuring power support, the sand-measuring sensor, the sand-measuring probe and the fixed air-lift pump lifting channel, the liquid pipe power device, the liquid pipe power support, and the liquid pipe sensor; cooperating with the double-hole air-lift pump, it can be used to manually move the air-lift pump.

[0015] The intelligent device of the air lift pump: It includes a sand detection power device, a sand detection power support, a sand detection sensor, a sand detection probe, and a sand detection protection tube, which together form the sand detection function. It mainly detects the signal of the sensor by lifting the probe, analyzes and compares whether the dirt around the liquid lift pipe of the liquid lift is about to block the lift pipe, and then sends a signal to start the air lift pump to lift the dirt. When it is analyzed and compared that there is no dirt around the lift pipe, a signal is sent to stop the air lift pump. In this way, the start and stop of the air lift pump can be intelligently controlled, saving energy and reducing carbon emissions. And it fundamentally solves the problem that it is impossible to judge how much dirt will bury the lift pipe of the air lift pump, making the air lift pump unable to lift the dirt.

[0016] The intelligent device of the air lift pump: It also includes a liquid pipe power device, a liquid pipe power support, and a liquid pipe sensor, which together form an automatic lifting device for the lift pipe. Its main function one is to lift the air lift pump according to the signal of the sand detection sensor. Function two can also automatically lift the air lift pump according to the amount of sand and dirt sensed by its own liquid pipe sensor, making the content of the lifted dirt uniform, improving the efficiency of the air lift pump, and also avoiding blockage, expanding the use range of the air lift pump. Function three is that when the lift pipe is blocked and the double-hole backwash pipe cannot flush it open, the air lift pump is lifted and then backwashed to clean the dirt, and the air lift pump can be used normally during the process of lifting and lowering. This is something that ordinary air lift pumps cannot do.

[0017] The liquid pool can be various sewage pools (inlet well, sewage channel, coarse grid channel, fine grid channel, primary sedimentation tank, secondary sedimentation tank, aeration tank, grit chamber, reaction tank, red bacteria tank, sewage well, sewer, septic tank), construction site mud pit, river, deep well, seawater, oil sedimentation tank, etc.

[0018] The blower mainly provides power for the air lift pump; and it is connected to the air pipe of the air lift pump through an air hose, so as to meet the condition that the air lift pump can be lifted and lowered. The blower is controlled by a frequency converter. Normally, the blower operates at about 40HZ. When the amount of sand and dirt increases abnormally, it operates at 50HZ. When backwashing due to blockage, it operates at 60HZ, which is more energy-saving. And the liquid dirt can be lifted by adjusting the frequency converter.

[0019] The main function of the automatic control system: One is to analyze the dirt condition of the liquid pool provided by the sand detection device through the PLC. Normally, it measures the dirt intermittently according to the sand detection device. When the measured dirt has reached the lift pipe orifice, it starts to control the air lift pump, blower, valve, etc. to lift the dirt; when the measured dirt has reached the bottom of the pool, it stops lifting the dirt. Thus, the purpose of energy conservation is achieved and carbon emissions are reduced.

[0020] The automatic control system, the second main function is to analyze the data provided by the liquid pipe sensor through the PLC. If an abnormal situation occurs, when it is measured that the dirt has buried the lifting liquid pipe orifice, first lift the liquid pipe to expose the lifting liquid pipe, and then turn on the control air-lift pump, fan, valve, etc. to lift the dirt; when it is measured that the dirt level decreases, control the liquid pipe device to follow and lower it. During this period, the air-lift pump is normally turned on to lift the dirt until it is measured that the dirt has reached the bottom of the tank, then stop lifting the dirt.

[0021] After the above device was tested and run through my experiment, it achieved the described main functions; it can automatically and manually operate an intelligent sand-measuring mobile air-lift pump of this invention, saving a large amount of manpower and material resources; and because the amount of lifted dirt can be adjusted at any time through the dirt sensing system and the fan frequency converter via the PLC, the concentration of the lifted dirt is increased, avoiding the original waste of energy phenomenon of lifting the liquid without dirt at regular intervals or continuously. It saves more than 60% of the energy compared with the original continuous operation of the air-lift pump, and is suitable for popularization and application.

[0022] The advantages and positive effects of this invention are:

[0023] This invention uses a double-hole air-lift pump, which has an anti-blocking function and an increased gas backwashing function; it solves the problems in the background technologies of 0002 and 0003, greatly expanding the application range of the air-lift pump in various liquid environments; it can replace dirt pumps, submersible sewage pumps, screw pumps, and ordinary air-lift devices.

[0024] This invention uses a mobile air-lift support, which can manually or automatically move the air-lift pump up and down freely, adding the function of installing, repairing, and maintaining the air-lift pump without stopping production; reducing the installation and maintenance costs; solving the problems in the background technologies of 0005 and 0006.

[0025] This invention uses a touch-type metering sand-measuring device to realize the perception of the existence of dirt under the liquid, adding a method for measuring dirt under the liquid. It fills a blank and makes an automatic control energy-saving air-lift pump possible.

[0026] This invention can, through automatic control, realize the intelligent opening of the air-lift pump to lift dirt when there is sand, slag, and dirt, and stop the air-lift pump when there is no sand, slag, and dirt, achieving the function of intelligent control of the air-lift pump. At the same time, it reaches the minimum value of carbon emissions and saves energy.

[0027] This invention overcomes the shortcomings that it is impossible to sense the amount of dirt under the liquid and that the general air-lift pump is buried by a lot of sand and slag, making it impossible to perform air-lifting. At the same time, it well solves the problem of air-lift pump blockage. It solves the problem in the background technology of 0005. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Appendix Figure 1 is a schematic structural diagram of the double-hole air-lift pump in an embodiment of this invention.

[0029] Appendix Figure 2 This is a schematic structural diagram of an intelligent sand-measuring mobile air-lift pump in an embodiment of the present invention.

[0030] Among them: 1 is a double-hole air-lift pump, 11 is a lifting liquid pipe, 12 is air pipe 1, 13 is air pipe 2, 14 is aeration pipe 1, 15 is aeration pipe 2, 16 is an air-lift pump fixing plate, 17 is a blowing pipe; 2 is a fixed mobile air-lift pump bracket, 21 is the main board of the air-lift pump bracket, 22 is the upper bracket of the air-lift pump, 23 is the lower bracket of the air-lift pump; 3 is an air-lift pump intelligent device, 31 is a sand-measuring power device, 32 is a sand-measuring power support, 33 is a sand-measuring sensor, 34 is a sand-measuring probe, 35 is a sand-measuring protection tube, 36 is a liquid pipe power device, 37 is a liquid pipe power support, 38 is a liquid pipe sensor; 4 is a fan, 41 is a wind hose; 5 is an automatic control system, 51 is a cable; 6 is a liquid pool; Specific embodiments

[0031] The following combines the appendix Figure 1 、 2 to further elaborate in detail on an intelligent sand-measuring mobile air-lift pump of the present invention and its usage method.

[0032] An intelligent sand-measuring mobile air-lift pump includes: 1. A double-hole air-lift pump; 2. A fixed mobile air-lift pump bracket; 3. An air-lift pump intelligent device; 4. A fan, 5. An automatic control system; 6. A liquid pool;

[0033] The double-hole air-lift pump 1: includes a lifting liquid pipe 11 for lifting the gas-liquid mixture. Air pipe 12 and air pipe 13 are connected to the bottom of the lifting liquid pipe at intervals. Under normal circumstances, an appropriate amount of gas is introduced to mix with the liquid to lift the dirt, and the valve can be adjusted; when it is blocked, the amount of gas and pressure are increased to dredge the lifting liquid pipe. Aeration pipe 15 and aeration pipe 16 are installed near the lifting liquid pipe. Under normal circumstances, an appropriate amount of gas is introduced to mix with the liquid for stirring, and the valve can be adjusted, which is beneficial to the lifting of dirt; when the liquid pipe is buried by dirt, the amount of gas and pressure are increased to clean the dirt around the lifting liquid pipe to ensure that the liquid pipe can normally suck sand. The air-lift pump fixing plate 16 plays a role in fixing the air-lift pump pipe. The function of the double-hole air-lift pump is to cut the dirt through the double-hole air pipe and then air-lift the dirt, effectively preventing large dirt from blocking the lifting liquid pipe, and having a backwashing function, which is the main difference from an ordinary air-lift pump. The double-hole air-lift pump 1 can be used alone and can be used in places where a manual mobile air-lift pump is used.

[0034] The fixed and movable air-lift pump bracket 2 includes a main board 21 of the air-lift pump bracket and a lower bracket 23 of the air-lift pump, which are used to fix the air-lift pump 1, the moving and lifting channel of the sand measuring protection pipe 35, the sand blowing pipe 17, the aeration pipe 14, and the aeration pipe 15; an upper bracket 22 of the air-lift pump is used to fix the lifting measurement device, the sand measuring power device 31, the sand measuring power support 32, the sand measuring sensor 33, the sand measuring probe 34, and the fixed air-lift pump lifting channel, the liquid pipe power device 36, the liquid pipe power support 37, and the liquid pipe sensor 38. The double-hole air-lift pump 1 can be used with manual movement of the air-lift pump. And because there is a fixed bracket, the air-lift pump can move up and down, so it can be used for installation and maintenance when there is dirt under the liquid in the liquid pool, that is, the purpose of installing and maintaining the air-lift pump without emptying the liquid can be achieved.

[0035] The air-lift pump intelligent device 3 includes a sand measuring function composed of a sand measuring power device 31, a sand measuring power support 32, a sand measuring sensor 33, a sand measuring probe 34, and a sand measuring protection pipe 35. It mainly detects the signal of the measurement sensor by lifting the probe, analyzes and compares whether the dirt around the liquid lifting pipe 11 of the liquid is about to block the lifting pipe, and thus sends out a signal to start the air-lift pump to lift the dirt; when analyzing and comparing that there is no dirt around the lifting pipe 11, it sends out a signal to stop the air-lift pump; in this way, the start and stop of the air-lift pump can be intelligently controlled, saving energy and reducing carbon emissions; and fundamentally solving the problem that it is impossible to judge how much dirt will bury the lifting pipe of the air-lift pump and make the air-lift pump unable to lift the dirt.

[0036] The air-lift pump intelligent device 3 also includes a lifting liquid pipe automatic lifting device composed of a liquid pipe power device 36, a liquid pipe power support 37, and a liquid pipe sensor 38. The main functions are: one is to lift and lower the air-lift pump 1 according to the signal of the sand measuring sensor 33; the second function can also sense the amount of sand and dirt according to the self-provided liquid pipe sensor 38 and automatically lift and lower the air-lift pump 1 to make the content of the lifted dirt uniform, improve the efficiency of the air-lift pump, and also avoid blockage, expanding the use range of the air-lift pump; the third function is that when the lifting liquid pipe 11 is blocked and the double-hole backwashing pipes 12 and 13 cannot flush it open, the air-lift pump 1 is raised and then backwashed to clean the dirt, and the air-lift pump 1 can be used normally during the process of raising and lowering. This cannot be achieved by ordinary air-lift pumps.

[0037] The fan 4 mainly provides power for the air-lift pump 1; and is connected to the air-lift pump air pipes 12 and 13 through the 41 air hose, so as to meet the condition that the air-lift pump can be lifted and lowered; explosion-proof fans can be used in places with explosion-proof requirements. The fan is controlled by a frequency converter. Normally, the fan runs at about 40HZ, runs at 50HZ when the sand and slag increase abnormally, and runs at 60HZ during backwashing for blockage, which is more energy-saving. And the liquid dirt can be adjusted by adjusting the frequency converter.

[0038] The automatic control system 5 has two main functions. First, it analyzes the dirt condition in the liquid pool provided by the sand measuring device 33 through the PLC. Under normal circumstances, it measures the dirt intermittently every 5 - 10 minutes by the sand measuring device. When the measured dirt reaches the lifting liquid pipe orifice, it activates the control of the air lift pump, fan, valve, etc. to lift the dirt; when the measured dirt reaches the bottom of the pool, it stops lifting the dirt. Thus, the purpose of energy conservation is achieved and carbon emissions are reduced.

[0039] The second main function of the automatic control system 5 is to analyze the data provided by the liquid pipe sensor 38 through the PLC. If an abnormal situation occurs, when the measured dirt has buried the lifting liquid pipe orifice, first lift the liquid pipe to expose the lifting liquid pipe, and then activate the control of the air lift pump, fan, valve, etc. to lift the dirt; when the measured dirt decreases, control the liquid pipe device to follow and lower it. During this period, the air lift pump 1 is normally activated to lift the dirt until the measured dirt reaches the bottom of the pool, and then stop lifting the dirt.

[0040] After the experimental trial operation of the above device, the described main functions have been achieved; it can automatically and manually operate an intelligent sand measuring mobile air lift pump of this invention, saving a large amount of manpower and material resources.

[0041] After the experimental trial operation of the above device, since the amount of dirt lifted can be adjusted at any time through the dirt sensing system and the fan frequency converter via the PLC, the concentration of the lifted dirt is increased, avoiding the waste of energy in the original non - dirt - timed or continuous operation of lifting the liquid. It saves more than 60% of the energy compared to the original continuous operation of the air lift pump and is suitable for popularization and application.

[0042] The above description is only a preferred embodiment of the present invention. The description of the embodiment is for the convenience of those skilled in the art in this technical field to understand and apply the present invention, and does not impose any formal restrictions on the present invention; those skilled in the art make some simple modifications, equivalent changes or decorations using the above - disclosed technical content and principles, and all fall within the protection scope of the present invention.

[0043] The intelligent sand measuring mobile air lift pump invented above can be applied to the liquid field, including but not limited to various sewage pools (inlet well, sewage channel, coarse grid channel, fine grid channel, primary sedimentation tank, secondary sedimentation tank, aeration tank, grit chamber, reaction tank, red bacteria tank, sewage well, sewer, septic tank), construction site mud ponds, rivers, deep wells, seawater, oil sedimentation tanks, etc.

Claims

1. An intelligent sand-measuring mobile air-lift pump, comprising a double-hole air-lift pump (1), a fixed mobile air-lift pump support (2), an air-lift pump intelligent device (3), a blower (4), an automatic control system (5), and a liquid pool (6); First, a measuring device that touches and measures the thickness of sand, slag, and dirt is used to lift the dirt-removing equipment up and down according to the amount of sand, slag, and dirt; second, by increasing the diameter of the lifting liquid pipe (11) and adopting a double-hole structure, and cooperating with an intelligent lifting air-lift pump and backwashing, the blockage of the air-lift pump is solved; The double-hole air-lift pump (1): includes a lifting liquid pipe (11) for lifting the gas-liquid mixture; air pipe 1 (12) and air pipe 2 (13) are connected to the bottom of the lifting liquid pipe at intervals, and multiple air diffuser pipes are installed near the lifting liquid pipe (11). The air-lift pump fixing plate (16) is used to fix the air-lift pump pipe, and the air pipes are connected to the blower hose. The air pipes include air pipe 1 (12) and air pipe 2 (13); the double-hole air-lift pump (1) cuts the dirt through air pipe 1 (12) and air pipe 2 (13) and then air-lifts the dirt, effectively preventing large dirt from blocking the lifting liquid pipe, and having a backwashing function; The fixed mobile air-lift pump support (2): includes an air-lift pump support main board (21) and an air-lift pump lower support (23), which are used to fix the mobile lifting channel of the double-hole air-lift pump (1) and the measuring device; an air-lift pump upper support (22), which is used to fix the power device of the double-hole air-lift pump (1) and the measuring device. Since the double-hole air-lift pump (1) can move up and down, it can be used for the installation and maintenance when there is dirt under the liquid in the liquid pool, that is, the purpose of installing and maintaining the air-lift pump without emptying the liquid can be achieved; The air-lift pump intelligent device (3) includes a sand-measuring device composed of five parts: a sand-measuring power device (31), a sand-measuring power support (32), a sand-measuring sensor (33), a sand-measuring probe (34), and a sand-measuring protection tube (35); it also includes an automatic lifting device for the lifting liquid pipe (11) composed of three parts: a liquid pipe power device (36), a liquid pipe power support (37), and a liquid pipe sensor (38); The automatic control system (5), first, analyzes the dirt condition of the liquid pool provided by the sand-measuring device through PLC. When normal, it intermittently measures the dirt according to the sand-measuring device. When the measured dirt has reached the lifting liquid pipe orifice, it turns on the control of the air-lift pump, blower, valve, etc. to lift the dirt; when the measured dirt has reached the bottom of the pool, it stops lifting the dirt; Second, analyzes the data provided by the liquid pipe sensor through PLC. If an abnormal situation occurs, when the measured dirt has buried the lifting liquid pipe orifice, first lift the liquid pipe to expose the lifting liquid pipe, and then turn on the control of the air-lift pump, blower, valve, etc. to lift the dirt; when the measured dirt decreases, control the liquid pipe device to follow and decrease. During this period, the air-lift pump is normally turned on to lift the dirt until the measured dirt has reached the bottom of the pool, and then stop lifting the dirt.

2. The intelligent sand-measuring mobile air-lift pump according to claim 1, wherein The blower (4) mainly provides power for the air-lift pump; and is connected to the air pipe of the air-lift pump through an air hose, so as to meet the condition that the air-lift pump can be lifted and lowered; The blower is controlled by a frequency converter. Normally, the blower operates at about 40HZ. When the sand and slag increase abnormally, it operates at 50HZ. When there is a blockage and backwashing, it operates at 60HZ. And the amount of liquid sewage discharged can be adjusted by adjusting the frequency converter.

3. The intelligent sand-measuring mobile air-lift pump according to claim 1, wherein The liquid pool (6) can be any one of various sewage pools, construction site mud pools, rivers, deep wells, seawater, and oil sedimentation tanks.

Images