An intelligent air-lift traveling sand suction machine and its usage method

Abstract

The present invention relates to the field of liquid handling machinery, and specifically to an intelligent air-lift traveling sand suction machine and its usage method, mainly including a traveling crane, an intelligent air-lift pump, a lifting slag scraper, a fan, and an automatic control system. The first main function is to automatically operate the intelligent air-lift pump and the traveling sand suction machine according to the automatic perception of the amount of dirt at the bottom of the liquid pool. That is, through the dirt perception system and the fan frequency converter, the amount of lifted dirt is adjusted at any time through the PLC, so that the concentration of the lifted dirt increases, improving the efficiency. The second function is to solve the blockage problem through backwashing and lifting the air-lift pump. Through these two main functions, the blockage and energy waste phenomena of the original bridge crane running regularly or continuously to lift the liquid are solved. It saves more than 50% of the energy compared with the original continuously running air-lift pump, reduces carbon emissions, and is suitable for popularization and application.

Description

Technical Field

[0001] The present invention relates to the technical field of lifting liquid bottom dirt, and is particularly suitable for lifting the bottom dirt in a horizontal flow grit chamber or an aerated grit chamber of a sewage treatment plant. Specifically, it is an intelligent air-lift gantry-type sand suction machine and its usage method. Background Art

[0002] The gantry-type sand suction machine is a sand-lifting mechanical device mainly used in the aerated grit chambers of sewage treatment plants and waterworks. Most of them are equipped with a sand suction pump on the gantry and lift the sand through a sand discharge pipe into the sand discharge trough. The usage effect is not very ideal. The main reason is that the sediment in the grit chamber is relatively complex, not only sand grains, but also often large-volume foreign objects and flocculent dirt. These often clog the sand suction pump, and the sand suction pump needs to be lifted up for cleaning frequently, thus affecting the normal operation of the equipment. Therefore, a non-impeller lifting device is needed.

[0003] Although there is already a gantry equipped with a fixed air-lift device that can lift sand, slag and dirt by air-lift, there are still blockages sometimes; sometimes the sand, slag and dirt are deposited for a long time, the sand has a large specific gravity and a low moisture content, resulting in no fluidity and blocking the pipe orifice, making the air-lift device unable to be used, and only manual disassembly of the air-lift device for cleaning and operation is possible, which is time-consuming and laborious. Therefore, an automatic cleaning function is needed.

[0004] Whether using a sand suction pump or an ordinary air-lift pump, it is impossible to measure whether there is sediment and dirt to be lifted under the liquid, and the lifting device can only be continuously or regularly started. This not only wastes a large amount of electric energy, but also causes a large amount of waste of water resources, which does not conform to the direction of carbon emission and carbon neutrality advocated by the country. Therefore, an energy-saving and emission-reducing intelligent air-lift pump needs to be installed on the gantry.

[0005] 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 a bridge truss. The biggest problem is incomplete sand suction. The reason is that it is difficult for sand grains to settle at the water inlet end, but a large amount of sand grains are deposited at the water outlet end. The sand suction equipment in the aerated grit chamber moves back and forth between the water inlet and outlet ends to suck sand. Too much sand slag may cause damage to the sand suction equipment, and when there is too little sand, the sand suction effect cannot be achieved and only sewage is sucked. 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 slag instantaneously increases, burying the sand suction equipment and causing the sand suction equipment to stop operating. 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 slag in the sand collection trough, so as to achieve the required sand suction effect while protecting the equipment. Improve efficiency, save energy and reduce emissions, and reduce carbon emissions.

[0006] Therefore, it is necessary to improve the existing technology and invent an intelligent air-lift gantry-type sand suction machine to solve the above existing problems. Summary of the Invention

[0007] The object of the present invention is to overcome the above-mentioned deficiencies existing in the existing mobile traveling sand suction machine, and provide an intelligent air-lift traveling sand suction machine and its use method, which has the advantages of reasonable structural design, safety, convenient operation and use, low maintenance cost, high degree of automation and intelligence, etc., can realize the automatic lifting of dirt in the liquid pool, and can be used normally in the above-mentioned harsh environment.

[0008] In order to solve the problems in the background technology and achieve the above object, the present invention is implemented by adopting the following technical solutions:

[0009] First, in the structure of the original traveling crane, an intelligent air-lift pump is used to replace the original slag pump or fixed air-lift device, so as to solve the problem that the air-lift device is blocked by too much sand and slag or the pipeline is bent, resulting in the abnormal operation of the traveling sand suction machine. Seriously, it is necessary to empty the liquid in the liquid pool to clean and repair the air-lift device; I use a measuring device that touches and measures the thickness of sand and slag dirt, and according to the amount of sand and slag dirt, the height of the dirt suction equipment is lifted for dirt suction, so as to solve the problem of energy-saving for dirt suction; and when there is too much sand and slag dirt in the extreme and the air-lift pump port is buried, the air-lift pump is lifted to make the dirt suction port suck dirt normally on the sand and slag again.

[0010] 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.

[0011] The intelligent air-lift traveling sand suction machine includes: 1. A liftable intelligent air-lift pump; 2. A fixed and movable air-lift pump support; 3. An air-lift pump intelligent device; 4. A fan, 5. An automatic control system; 6. A movable traveling crane; 7. A liftable slag scraper.

[0012] The liftable intelligent air-lift pump: includes a lift liquid pipe for lifting the gas-liquid mixture. Two are connected at intervals at the bottom of the lift liquid pipe. Normally, an appropriate amount of gas is introduced to mix with the liquid to lift the dirt, and the valve can be adjusted; when blocked, the air volume and pressure are increased to dredge the lift liquid pipe. The aeration pipe is installed near the lift liquid pipe. Normally, 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 air volume and pressure are increased to clean the dirt around the lift liquid pipe to ensure that the liquid pipe can normally suck sand. The cyclone separates the water outlet end of the liftable lift liquid pipe into steam and water, and then discharges the sand and slag into the slag discharge tank through the sewage pipe.

[0013] The function of the intelligent 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 lift liquid pipe, and having a backwashing function, which is the main difference from the ordinary air-lift pump. The intelligent air-lift pump can be used alone and can be used in places where a manual movable air-lift pump is used.

[0014] The fixed mobile air-lift pump support: It includes the main board of the air-lift pump support, which flexibly connects the support to the traveling crane. And pressure devices are installed on the main board and the side of the traveling crane where it is installed to sense the force on the support. When the pressure is normal, the traveling crane moves normally and the air-lift pump sucks sand; when the pressure increases, the traveling crane stops moving and the air-lift pump sucks sand in place. When the pressure is normal, the traveling crane can continue to move; when the pressure increases abnormally, an alarm is given and the traveling crane stops moving, thus protecting the support and pipelines from damage. (This is the second function of the invention patent, that is, automatically controlling the traveling speed of the traveling crane according to the amount of sand and slag and sucking all the sand clean); The lower support of the air-lift pump is used to fix the air-lift pump, sand measuring device, mobile lifting channel, and aeration pipe; The upper support of the air-lift pump is used to fix the lifting measurement device, sand measuring power device, sand measuring sensor, underwater sand measuring device, and fix the air-lift pump lifting channel, air-lift pump power device, and air-lift pump sensor. It can be used to manually move the air-lift pump in cooperation with the intelligent air-lift pump. And because there is a fixed support, the air-lift pump can move up and down, so that installation and maintenance can be carried out 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. (This is the third function of the invention patent, that the air-lift pump can be repaired and maintained without emptying the sewage).

[0015] The intelligent device of the air-lift pump includes a sand measuring function composed of a sand measuring power device, a sand measuring sensor, and an underwater sand measuring device. It mainly detects the signal of the measurement sensor through a lifting probe, analyzes and compares whether the dirt around the liquid lifting pipe is about to block the liquid lifting pipe, and thus sends out a signal to start the air-lift pump to lift the dirt; when it analyzes and compares that there is no dirt around the liquid lifting pipe, 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 solves the problem of being unable to judge the amount of dirt. When there is a lot of dirt, the liquid lifting pipe of the air-lift pump will be buried, making the air-lift pump unable to lift the dirt. (This is the fourth function of the invention patent, automatic sand suction).

[0016] The intelligent device of the air-lift pump also includes the automatic lifting of the air-lift pump composed of an air-lift pump power device and a liquid pipe sensor. The main function one is to lift and lower the air-lift pump according to the signal of the sand measuring sensor; The second function can also automatically lift and lower the air-lift pump according to the amount of sand and slag dirt sensed by the self-equipped air-lift pump sensor, making the content of the lifted dirt uniform, improving the efficiency of the air-lift pump, and also avoiding blockage; The third function is that when the liquid lifting pipe is blocked and the double-hole backwashing pipe cannot wash it open, the air-lift pump is lifted up and then backwashed to clean the dirt, and the air-lift pump can be used normally during the process of lifting and lowering. This cannot be achieved by ordinary air-lift pumps.

[0017] The blower mainly provides power for the liftable intelligent air-lift pump and is connected to the air-lift pump's air pipe through an air duct, enabling the air-lift pump to be lifted. In places with explosion-proof requirements, an explosion-proof blower can be used. 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 backwashing for blockage, it operates at 60HZ, which is more energy-efficient. Moreover, the liquid sewage can be lifted by adjusting the frequency converter.

[0018] The main function of the automatic control system is, firstly, to analyze the sewage condition in the liquid pool provided by the sand detection sensor through the PLC. Normally, when the traveling crane stops, the sewage is measured intermittently by the sand detection device every 5 - 10 minutes. When the measured sewage reaches the liquid lifting pipe orifice, the control of the air-lift pump, blower, valve, etc. is activated to lift the sewage, and the traveling crane is started to suck sand, thus achieving the purpose of energy conservation and reducing carbon emissions.

[0019] The second main function of the automatic control system is to analyze the data provided by the pressure sensor through the PLC. If an abnormal situation occurs or the sewage measured by the sand detection sensor has buried the liquid lifting pipe orifice, the traveling crane is stopped first, and the air-lift pump is lifted to expose the liquid lifting pipe. Then, the control of the air-lift pump, blower, valve, etc. is activated to lift the sewage. When the measured sewage level drops, the liquid pipe device is controlled to follow and lower. During this period, the air-lift pump is normally started to lift the sewage until the measured sewage reaches the bottom of the pool, and then the traveling crane can be normally started and operated.

[0020] The mobile traveling crane is welded with metal materials, with traveling wheels installed on both sides and a traveling wheel torque sensor installed. When the torque is greater than the set value, it immediately stops for maintenance. Eight guide wheels are installed on both sides under the traveling crane to prevent the traveling crane from deviating, and a guide wheel pressure sensor is installed. When the pressure is greater than the set value, it immediately stops for maintenance. The mobile traveling crane is wider than the ordinary traveling crane. On the middle platform, there are installed detachable and flexibly connected mobile air-lift pump brackets, liftable air-lift pumps, pipelines, blowers, liftable slag scrapers, automatic control boxes and other equipment. Due to the installation of the torque sensor, the traveling speed of the traveling crane can be adjusted according to the torque resistance generated by the amount of sewage at the bottom of the liquid pool. It can quickly pass through places with less sand and slag, slowly pass through places with more sand and slag, or even stop to suck sand and slag and then continue to travel. In this way, all the sand and slag can be completely sucked clean.

[0021] The mobile traveling crane is wider than the ordinary traveling crane. On the middle platform, there are installed detachable fixed mobile air-lift pump brackets, blowers, liftable slag scrapers and other equipment, as well as an automatic control box.

[0022] The automatic control box controls the traveling crane, air-lift pump, slag scraper, etc. through the PLC program, and the usage method has been introduced above.

[0023] The liftable slag scraper is characterized in that: a fixed scraper support is fixed on the traveling crane, the lifting and swinging of the scraper are controlled according to the traveling direction, and the lifting height is greater than 0.5 meters; the upper half of the scraper uses hard materials and the lower half uses soft materials. With this invention, it can operate normally regardless of the amount of floating slag.

[0024] Through my experimental trial operation, the above device has achieved the described main functions; it is an intelligent air-lift traveling crane type sand suction machine that can operate automatically and manually, saving a large amount of manpower and material resources and facilitating maintenance and repair.

[0025] Through my experimental trial operation, the above device can, through the dirt perception system and the fan frequency converter, adjust the amount of lifted dirt at any time through the PLC, increasing the concentration of the lifted dirt and avoiding the phenomenon of wasting energy in the original operation of the sand suction pump by the traveling crane without dirt at regular or continuous intervals to lift the liquid. It saves more than 50% of the energy compared to the original continuously operating air-lift pump, reduces carbon emissions, and is suitable for popularization and application. Description of the Drawings

[0026] Figure 1 It is a schematic diagram of an example of an intelligent air-lift traveling crane type sand suction machine of the present invention.

[0027] Among them: 1 is a liftable intelligent 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 a cyclone, 16 is a sewage discharge pipe; 2 is a fixed and movable air-lift pump support, 21 is the main board of the air-lift pump support, 22 is the upper support of the air-lift pump, 23 is the lower support of the air-lift pump, 24 is the support side pressure sensor; 3 is an air-lift pump intelligent device, 31 is a sand measurement power device, 32 is a sand measurement sensor, 33 is an underwater sand measurement device, 34 is an air-lift pump power device, 35 is an air-lift pump sensor; 4 is a fan; 5 is an automatic control box; 6 is a mobile traveling crane, 61 is a traveling wheel, 62 is a traveling wheel torque sensor, 63 is a guide wheel, 64 is a guide wheel pressure sensor; 7 is a liftable slag scraper, 71 is a fixed scraper support, 72 is a scraper, 73 is a scraper lifting device Detailed Embodiment

[0028] The following further describes in detail an intelligent air-lift traveling crane type sand suction machine of the present invention and its usage method in conjunction with the drawings.

[0029] The described intelligent air-lift traveling crane type sand suction machine includes: 1. A liftable intelligent air-lift pump; 2. A fixed and movable air-lift pump support; 3. An air-lift pump intelligent device; 4. A fan, 5. An automatic control system; 6. A mobile traveling crane; 7. A liftable slag scraper.

[0030] The liftable intelligent air-lift pump 1: It includes a lift liquid pipe 11 for lifting the gas-liquid mixture. The air pipes 12 and 13 are connected to the bottom of the lift liquid pipe at intervals. Normally, an appropriate amount of gas is introduced to mix with the liquid for lifting the dirt, and the valve can be adjusted; when it is blocked, the air volume and pressure are increased to dredge the lift liquid pipe. The aeration pipe 14 is installed near the lift liquid pipe. Normally, 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 air volume and pressure are increased to clean the dirt around the lift liquid pipe to ensure that the liquid pipe can normally suck sand. The cyclone 15 separates the water and gas at the water outlet end of the liftable lift liquid pipe 11, and then discharges the sand and slag into the slag discharge tank through the sewage pipe 16.

[0031] The function of the intelligent 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 lift liquid pipe, and it has a backwashing function, which is the main difference from the ordinary air-lift pump. The intelligent air-lift pump 1 can be used alone and can be used in places where the air-lift pump is manually moved.

[0032] The fixed and movable air-lift pump support 2: It includes an air-lift pump support main board 21 that flexibly connects the support to the traveling crane, and a side pressure device 24 is installed between the main board and the traveling crane to sense the force on the support. When the pressure is normal, the traveling crane travels normally and the air-lift pump sucks sand; when the pressure increases, the traveling crane stops traveling and the air-lift pump sucks sand in place. When the pressure is normal, the traveling crane can continue to travel; when the pressure abnormally increases, an alarm is given and the traveling crane stops traveling, thus protecting the support and pipeline from damage. (This is the second function of the invention patent, that is, automatically controlling the traveling speed of the traveling crane according to the amount of sand and slag and sucking all the sand clean); the lower air-lift pump support 23 is used to fix the air-lift pump 1, the moving and lifting channel of the sand measuring device 33, and the aeration pipe 14; the upper air-lift pump support 22 is used to fix the lifting and measuring device, the sand measuring power device 31, the sand measuring sensor 32, the underwater sand measuring device 33 and the fixed air-lift pump lifting channel, the air-lift pump power device 34, and the air-lift pump sensor 35. It can be used in conjunction with the intelligent air-lift pump 1 for manually moving the air-lift pump. And because there is a fixed support, the air-lift pump can move up and down, so that it can be installed and maintained when there is dirt under the liquid in the liquid pool, that is, the purpose of installing and maintaining the air-lift pump without draining the liquid can be achieved. (This is the third function of the invention patent, that is, the air-lift pump can be repaired and maintained without draining the sewage).

[0033] The air-lift pump intelligent device 3 includes a sand-measuring power device 31, a sand-measuring sensor 32, and a sand-measuring underwater device 33, which together form the sand-measuring function. It mainly detects the signal of the metering sensor by lifting the probe, analyzes and compares whether the dirt around the liquid-lifting pipe 11 of the liquid-lifting pump is about to block the liquid-lifting 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 liquid-lifting pipe 11, 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 fundamentally solving the problem that it is impossible to judge how much dirt will bury the liquid-lifting pipe of the air-lift pump and make the air-lift pump unable to lift the dirt. (This is Function 4 of the invention patent, automatic sand suction).

[0034] The air-lift pump intelligent device 3 also includes an air-lift pump power device 34 and a liquid-pipe sensor 35, which together form the automatic lifting of the air-lift pump. The main functions are as follows: Function 1 is to lift and lower the air-lift pump 1 according to the signal of the sand-measuring sensor 32; Function 2 can also sense the amount of sand and dirt according to the self-equipped air-lift pump sensor 35, automatically lift and lower the air-lift pump 1, make the content of the lifted dirt uniform, improve the efficiency of the air-lift pump, and also avoid blockage; Function 3 is when the liquid-lifting pipe 11 is blocked and the double-hole backwash pipes 12 and 13 cannot flush it open, the air-lift pump 1 is raised to backwash and clean the dirt, and the air-lift pump 1 can be used normally during the raising and lowering process. This is something that ordinary air-lift pumps cannot do.

[0035] The fan 4 mainly provides power for the liftable intelligent air-lift pump 1; and is connected to the air-lift pump air pipes 12 and 13 through the air duct, 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. When the amount of sand and dirt increases abnormally, it runs at 50HZ. When backwashing due to blockage, it runs at 60HZ, which is more energy-saving. And the liquid dirt can be lifted by adjusting the frequency converter.

[0036] The main function of the automatic control system 5 is as follows: Function 1 is to analyze the dirt condition in the liquid pool provided by the sand-measuring sensor 32 through the PLC. Normally, when the traveling crane stops, the dirt is measured intermittently by the sand-measuring device every 5 - 10 minutes. When the measured dirt has reached the liquid-lifting pipe orifice, the control of the air-lift pump, fan, valve, etc. is started to lift the dirt: and the traveling crane is started to suck sand; thus achieving the purpose of energy saving and reducing carbon emissions.

[0037] For the automatic control system 5, the second main function is to analyze the data provided by the pressure measuring sensor 24 through the PLC. If an abnormal situation occurs or when the dirt has buried the lifting liquid pipe orifice as measured by the sand measuring sensor 32, the traveling crane is first stopped, and the air lift pump is lifted to expose the lifting liquid pipe. Then, the control of the air lift pump, the fan, the valve, etc. is started to lift the dirt. When the measured dirt level decreases, the liquid pipe device is controlled to follow and decrease. During this period, the air lift pump 1 is normally started to lift the dirt until the measured dirt has reached the bottom of the tank, and then the traveling crane can be normally started and operated.

[0038] The mobile traveling crane 6 is welded from metal materials, with traveling wheels 61 installed on both sides, and a traveling wheel torque sensor 62 installed. When the torque is greater than the set value, it will immediately stop for maintenance. Guide wheels 63 are installed on both sides under the traveling crane to prevent the traveling crane from deviating, and a guide wheel pressure sensor 64 is installed. When the pressure is greater than the set value, it will immediately stop for maintenance.

[0039] The mobile traveling crane 6 is wider than an ordinary traveling crane. Removable fixed mobile air lift pump brackets 2, a fan 4, a liftable slag scraper 7 and other equipment are installed on the middle platform; an automatic control box 5.

[0040] The automatic control box 5 controls the traveling crane, the air lift pump, the slag scraper, etc. through a PLC program, and the usage method has been introduced above.

[0041] For the liftable slag scraper 7, the fixed scraper bracket 71 is fixed on the traveling crane. The scraper lifting device 73 is controlled according to the traveling direction, and the lifting height is greater than 0.5 meters; the scraper 72 uses hard materials for the upper half and soft materials for the lower half. With this invention, it can operate normally regardless of the amount of floating slag.

[0042] After the above device has been tested and run in my experiment, it has achieved the described main functions; it can be automatically and manually operated for an intelligent air lift traveling crane type sand suction machine of this invention, saving a large amount of manpower and material resources and being convenient for maintenance and repair.

[0043] After the above device has been tested and run in my experiment, 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, increasing the concentration of the lifted dirt and avoiding the waste of energy in the original situation where the traveling crane without dirt or the sand suction pump runs regularly or continuously to lift the liquid. It saves more than 50% of the energy compared to the original continuous operation of the air lift pump and is suitable for popularization and application.

[0044] 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 limit the present invention in any form; those skilled in the art make some simple modifications, equivalent changes or decorations using the disclosed technical content and principles above, and all fall within the protection scope of the present invention.

[0045] The intelligent air-lift traveling sand suction machine invented above can be applied to the liquid field, including but not limited to various sewage channels, aerated grit chambers, before and after coarse screens, before and after fine screens, primary sedimentation tanks, secondary sedimentation tanks, aeration tanks, grit chambers, reaction tanks, red bacteria tanks, and so on.

Claims

1. An intelligent air-lift traveling sand suction machine, comprising a liftable intelligent air-lift pump (1), a fixed and movable air-lift pump support (2), an air-lift pump intelligent device (3), a blower (4), an automatic control system (5), a movable traveling crane (6), and a liftable slag scraper (7); The liftable intelligent air-lift pump (1): includes a lifting liquid pipe (11) for lifting the gas-liquid mixture; an air pipe one (12) and an air pipe two (13) are connected to the bottom of the lifting liquid pipe at intervals, and the air pipe one and the air pipe two cut the dirt and then air-lift the dirt; an air diffuser pipe (14) is installed near the lifting liquid pipe and is adjusted by a valve; a hydrocyclone (15) separates the water at the outlet end of the lifting liquid pipe (11) that is lifted and discharged through a sewage pipe (16); The fixed and movable air-lift pump support (2): includes an air-lift pump support main board (21), the air-lift pump support is flexibly connected to the movable traveling crane (6), and a pressure sensor (24) is installed between the air-lift pump support main board and the movable traveling crane to sense the force on the air-lift pump support; an air-lift pump lower support for fixing the liftable intelligent air-lift pump (1) and the air diffuser pipe (14); an air-lift pump upper support (22) for fixing a sand measuring power device (31), a sand measuring sensor (32), a sand measuring underwater device (33), and for fixing an air-lift pump lifting channel, an air-lift pump power device (34), and an air-lift pump sensor (35); The blower (4) provides power for the liftable intelligent air-lift pump (1), and the blower adjusts the discharged liquid dirt according to the adjusted frequency converter; The movable traveling crane (6) is welded from metal materials, with traveling wheels (61) installed on both sides, and a traveling wheel torque sensor (62) is installed; 8 guide wheels (63) are installed on both sides under the traveling crane, and a guide wheel pressure sensor (64) is installed; The air-lift pump sensor (35) senses the amount of sand, slag, and dirt, automatically lifts and lowers the air-lift pump (1), making the content of the lifted dirt uniform, improving the efficiency of the air-lift pump, and also avoiding blockage; Through a measuring device that touches and measures the thickness of sand, slag, and dirt, according to the amount of sand, slag, and dirt, the height of the sewage suction equipment is lifted and lowered for sewage suction, thus solving the problem of energy-saving sewage suction; A fixed and movable air-lift pump support (2) and a liftable intelligent air-lift pump (1) with a detachable flexible connection are installed in the middle of the platform of the movable traveling crane (6); pipelines, a blower (4), a liftable slag scraper (7), and an automatic control box device are also installed on the platform of the movable traveling crane; a hydrocyclone (15) is also installed.

2. The intelligent air-lift traveling sand suction machine according to claim 1, characterized in that: The liftable slag scraper (7) fixes a fixed scraper support (71) on the traveling crane, controls a scraper lifting device (73) according to the traveling direction, and the lifting height is greater than 0.5 meters; the scraper (72) uses hard materials for the upper half and soft materials for the lower half.

3. The usage method of an intelligent air-lift traveling sand suction machine according to any one of claims 1-2, characterized in that: Through the measurement data of the sensors, after the PLC program, the traveling crane, the air-lift pump, and the slag scraper are controlled, specifically as follows: I. Intelligent start-stop, lifting and lowering of the air-lift pump, traveling crane, measurement, and operation method: First, analyze the dirt condition of the liquid pool provided by the sand detection sensor (32) through the PLC. When normal and the traveling crane stops, measure the dirt intermittently every 5 - 10 minutes by the sand detection device. When the measured dirt has reached the lifting liquid pipe orifice, start the control of the air lift pump, fan, and valve to lift the dirt, and start the mobile traveling crane (6) to suck sand. Second, analyze the data provided by the pressure sensor (24) through the PLC. If an abnormal situation occurs or the dirt measured by the sand detection sensor (32) has buried the lifting liquid pipe orifice, first stop the traveling crane, and lift the air lift pump to expose the lifting liquid pipe, then start the control of the air lift pump, fan, and valve to lift the dirt; when the measured dirt decreases, control the liquid pipe device to follow and decrease. During this period, normally start the liftable intelligent air lift pump (1) to lift the dirt until the measured dirt has reached the bottom of the pool, then the traveling crane can be normally started and operated. II. Methods for solving blockage and energy conservation: First, solve the problem that the air lift device is blocked by a large amount of sand and slag or the pipeline is bent, which makes the traveling crane sand suction machine unable to operate normally. In severe cases, it is necessary to empty the liquid in the liquid pool and clean and repair the air lift device; through a measuring device that touches and measures the thickness of the sand and slag dirt, according to the amount of sand and slag dirt, lift or lower the height of the dirt suction equipment to suck dirt, thus solving the problem of energy conservation for dirt suction; and when there is an extremely large amount of sand and slag dirt burying the air lift pump orifice, lift the air lift pump to make the dirt suction port resume normal dirt suction above the sand and slag; so during operation, the sand suction equipment needs to continuously adjust the sand suction height and start / stop time according to the sand and slag accumulation degree in the sand collection tank, so as to achieve the required sand suction effect while protecting the equipment. Second, solve the problem of air lift pump blockage by increasing the diameter of the air lift liquid pipe and adopting a double-hole structure, in cooperation with lifting the air lift pump and backwashing. III. Operating method of the fan (4): The fan is controlled by a frequency converter. Normally, the fan operates at about 40HZ. When the sand and slag increase abnormally, it operates at 50HZ. When backwashing for blockage, it operates at 60HZ, and the liquid dirt can be lifted by adjusting the frequency converter. IV. Method for installing without stopping water and automatically controlling the traveling speed of the traveling crane: The air lift pump support is flexibly connected to the traveling crane, and a pressure sensor (24) is installed on the traveling crane to sense the force on the support. When the pressure is normal, the traveling crane travels normally and the air lift pump sucks sand; when the pressure increases, the traveling crane stops traveling and the air lift pump sucks sand in place. When the pressure is normal, the traveling crane can continue to travel; when the pressure increases abnormally, an alarm is given and the traveling crane stops traveling, thus protecting the support and pipeline from damage, that is, realizing the function of automatically controlling the traveling speed of the traveling crane according to the amount of sand and slag. Because there is a fixed support that allows the air lift pump to move up and down, it is possible to install and repair when there is dirt under the liquid in the liquid pool, that is, it is possible to install and repair the air lift pump without emptying the liquid. V. Method for avoiding air lift pump blockage and realizing intelligent automatic sand suction: The intelligent device of the air-lift pump (3) includes a sand detection power device (31), a sand detection sensor (32), and a sand detection underwater device (33). The sand detection function mainly detects the signal of the sand detection sensor by lifting the intelligent device of the air-lift pump, analyzes and compares whether the dirt around the lift liquid pipe (11) is about to block the lift liquid pipe, and thus issues a command to start the air-lift pump to lift the dirt. When it is analyzed and compared that there is no dirt around the lift liquid pipe (11), the air-lift pump is stopped. Moreover, it fundamentally solves the problem that it is impossible to judge how much dirt will bury the lift liquid pipe of the air-lift pump and make the air-lift pump unable to lift the dirt, realizing the function of intelligent automatic sand suction. The intelligent device of the air-lift pump (3) also includes an air-lift pump power device (34) and an air-lift pump sensor (35) to automatically lift and lower the air-lift pump. First, the liftable intelligent air-lift pump (1) can be lifted and lowered according to the signal of the sand detection sensor (32). Second, according to the amount of sand and dirt sensed by the self-provided air-lift pump sensor (35), the liftable intelligent air-lift pump (1) is automatically lifted and lowered to make the content of the lifted dirt uniform, improve the efficiency of the air-lift pump, and also avoid blockage. Third, when the double-hole backwash pipe cannot flush open when the lift liquid pipe (11) is blocked, the liftable intelligent air-lift pump (1) is raised to backwash and clean the dirt, and the liftable intelligent air-lift pump (1) can be used normally during the raising and lowering process.

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