Corrosion-resistant underground water monitoring and protecting device

Abstract

The invention relates to the technical field of underground water monitoring, and particularly discloses a corrosion-resistant underground water monitoring protection device which comprises an inner protective cylinder and an outer protective cylinder, a cavity is reserved between the inner protective cylinder and the outer protective cylinder, a filter screen is arranged on the side wall of the outer protective cylinder, and the corrosion-resistant underground water monitoring protection device further comprises an intermittent flushing mechanism for cleaning the filter screen. The driving mechanism is used for driving the intermittent flushing mechanism to rotate; and the drainage mechanism is used for sucking impurities flushed from the filter screen. The filter screen can filter impurities in underground water, the driving mechanism can drive the intermittent flushing mechanism to clean the filter screen, the cleaned impurities are drained to the position away from the filter screen, and meanwhile a large number of bubbles are generated to assist in transferring of the impurities. The possibility that the cleaned impurities are adhered to the filter screen again is greatly reduced, so that the service life of the filter screen is prolonged, the replacement frequency of the filter screen is increased, and the columnar detection end is protected.

Description

Technical Field

[0001] The present application relates to the field of groundwater monitoring technology, and in particular to a corrosion-resistant groundwater monitoring and protection device. Background Art

[0002] With the increasing awareness of environmental protection, groundwater monitoring plays an increasingly important role in water resource management and pollution prevention. Groundwater monitoring technology is widely used in water quality testing, pollution source monitoring, groundwater resource assessment and other fields. By real-time monitoring of water quality parameters in groundwater, such as temperature, pH value, redox potential, dissolved oxygen and heavy metal content, it is possible to detect water quality changes in a timely manner and assess the health of groundwater, thereby providing a scientific basis for water resource management decisions. At present, groundwater monitoring technology mostly uses groundwater detectors with good corrosion resistance and stable structure to ensure long-term and stable operation in complex underground environments.

[0003] The structure of groundwater detectors usually includes sensors, data acquisition systems, protective housings, and columnar detection ends. Several through holes are opened at the end of the columnar detection end, the purpose of which is to allow groundwater to smoothly enter the columnar detection end and contact the internal sensors, thereby achieving real-time monitoring of various substances in groundwater.

[0004] However, although the design of the through-hole can effectively realize the inflow and detection of groundwater, groundwater often contains a large amount of suspended matter, oil substances and other impurities. These impurities are easy to adhere to or deposit inside the through-hole of the columnar detection end when the water flows through the through-hole, thereby affecting the normal operation of the columnar detection end. Suspended matter blocking the through-hole will not only cause poor water flow and reduce the amount of effective water sample entering the columnar detection end, but may also cause pollution to the sensor surface, thereby reducing the accuracy of the detection. In addition, long-term accumulation of impurities will accelerate the corrosion of the equipment and shorten the service life of the columnar detection end. Therefore, in order to ensure the stability and long-term use of the columnar detection end, the columnar detection end must be effectively protected to prevent suspended matter and oil substances from entering the through-hole, reduce equipment damage and maintenance costs, and extend its service life. Summary of the invention

[0005] In order to reduce the impact of impurities entering the through hole on the columnar detection end, the present application provides a corrosion-resistant groundwater monitoring and protection device.

[0006] The present application provides a corrosion-resistant groundwater monitoring and protection device, which adopts the following technical solution: A corrosion-resistant groundwater monitoring and protection device, immersed in groundwater, used to protect a columnar detection end, comprising an inner casing and an outer casing sleeved outside the inner casing, the inner casing sealing sleeve being sleeved on the end of the columnar detection end, and the outer casing sealingly setting the ends of the inner casing and the columnar detection end; The inner casing and the outer casing are provided with water outlets corresponding to the openings of the columnar detection end, and each of the water outlets is connected to the openings of the columnar detection end; The outer casing is hollow, and the inner cavity of the outer casing includes a water storage bin connected to the water inlet on the outer casing and a sundries storage bin connected to the top of the water storage bin. A filter screen is provided on the side wall of the water storage bin close to the inner casing, and the filter screen is directly opposite to the water inlet on the outer casing. A water storage bin is reserved between the inner wall of the outer casing and the outer wall of the inner casing, an intermittent flushing mechanism is provided in the water storage bin for flushing impurities on the filter screen into the water storage bin, and a driving mechanism for driving the intermittent flushing mechanism is provided on the columnar detection end; There is a cavity not submerged by groundwater at the top of the internal cavity of the storage bin, and a drainage mechanism for adjusting the air pressure in the cavity above the storage bin is provided on the storage bin; When the intermittent flushing mechanism rotates to face the filter, the intermittent flushing mechanism sprays a high-speed water flow onto the filter, and the drainage mechanism applies negative pressure to the upper cavity in the storage bin. When the intermittent flushing mechanism rotates from facing the filter to not facing the filter, the drainage mechanism generates a large number of bubbles at the bottom of the storage bin.

[0007] By adopting the above technical solution, the filter net can filter impurities in the groundwater entering the water storage tank from the water inlet on the outer casing, and the driving mechanism can drive the intermittent flushing mechanism to rotate. When it rotates to be opposite to the filter net, the driving mechanism drives the intermittent flushing mechanism to automatically flush the mesh surface of the filter net, so that the impurities on the filter net fall off the filter net and move to the water storage tank.

[0008] At the same time, the drainage mechanism will set a negative pressure on the upper cavity of the storage bin, so that more groundwater enters the storage bin from the water transfer bin, thereby draining the impurities diffused into the water transfer bin and draining most of the impurities into the storage bin.

[0009] When the intermittent flushing mechanism rotates to no longer face the filter, it automatically increases pressure to flush the filter the next time it faces the filter. The drainage mechanism generates a large number of bubbles in the storage bin during this process. The bubbles drive the impurities to float and eventually transfer a large amount of impurities to the upper surface of the groundwater in the storage bin away from the filter, thereby automatically collecting the cleaned impurities and reducing the possibility of the cleaned impurities clogging the filter again.

[0010] Optionally, the driving mechanism includes a rotating drum, a driving member, a gear and an outer gear ring. The rotating sealing sleeve of the rotating drum is arranged on the columnar detection end, and the end is transmission-connected to the intermittent flushing mechanism. The driving member is installed on the columnar detection end, the gear is coaxially fixed on the output end of the driving member, and the outer gear ring is sleeved on the rotating drum and meshes with the gear.

[0011] By adopting the above technical solution, when the driving member is working, it drives the gear to rotate, the gear drives the outer gear ring to rotate, and the outer gear ring drives the rotating drum to rotate, so as to realize the flushing process of the intermittent flushing mechanism.

[0012] Optionally, the intermittent flushing mechanism includes a flushing bin, a flushing nozzle, a first piston plate, a first push assembly, a water inlet pipe and a valve opening assembly, the end of the drum is provided with a connecting plate fixedly connected to the flushing bin, and a plurality of flushing nozzles are provided and spaced apart on one side of the flushing bin close to the filter screen; The first piston plate is slidingly sealed and arranged in the flushing chamber, and the space in the flushing chamber is divided into two chambers which are not communicated with each other. The first push assembly is used to drive the first piston plate to adjust the air pressure in the space of the flushing chamber. The water inlet pipe is buried in the inner wall of the flushing chamber, and one end of the water inlet pipe is connected with the chamber of the first piston plate close to the filter screen, and the other end is connected with the cavity between the outer casing and the inner casing. A first one-way valve for controlling the flow of water into the flushing chamber is arranged in the water inlet pipe. The valve opening assembly is arranged in the space of the first piston plate close to the filter screen, and is used to intercept the water entering the flushing bin in the space of the first piston plate close to the filter screen, or to allow the water entering the flushing bin to be sprayed out by each flushing nozzle.

[0013] By adopting the above technical solution, when the outer cylinder drives the flushing bin to rotate to face the filter screen, the valve assembly opens, and the first push assembly drives the first piston plate to spray the water entering the flushing bin through the water inlet pipe out through each flushing nozzle, thereby cleaning the impurities on the mesh surface of the filter screen.

[0014] During this process, the high-speed water flow sprayed by each flushing nozzle will form cavitation in the groundwater. At this time, the cavitation phenomenon will more thoroughly remove the impurities attached to the filter net, making the filter net clean more thoroughly and reducing the impact of the filter net blocking on the normal monitoring of groundwater by the columnar detection end.

[0015] The first push assembly continues to rotate, and firstly drives the first piston plate to suck the groundwater filtered inside the filter screen into the flushing chamber, so as to replenish the water used for spraying in the flushing chamber; The first push component continues to rotate, and the first piston plate compresses the water sucked into the flushing chamber. Since there is always air in the flushing chamber, and each suction does not completely fill the entire flushing chamber, the first push component compresses the air to increase the air pressure in the flushing chamber. When the flushing chamber is rotated again to face the filter on the other side, the valve assembly opens automatically, and the pressurized air sprays the water in the flushing chamber out at high speed, thereby cleaning the impurities on the filter.

[0016] Optionally, the cross-sectional area of ​​the flushing chamber is greater than or equal to the cross-sectional area of ​​the filter screen.

[0017] By adopting the above technical solution, during the process of cleaning the impurities on the filter net in the flushing chamber, although the filter net can block most of the impurities, it is inevitable that a very small number of impurities will pass through the filter net. The cross-sectional area of ​​the flushing chamber is designed to be greater than or equal to the cross-sectional area of ​​the filter net, which can block the impurities passing through the filter net, reduce the possibility of impurities directly entering the columnar detection end, and improve the protection of the columnar detection end.

[0018] Optionally, a water inlet of the water inlet pipe is communicated with a gap between the flushing bin and the inner casing.

[0019] By adopting the above technical solution, since the water inlet of the water inlet pipe is connected with the gap between the flushing chamber and the inner casing, the groundwater in this space is on the side away from the filter screen, and contains fewer impurities. During cleaning, the impurities passing through the filter screen will be blocked by the flushing chamber, which further increases the difficulty of impurities moving here, thereby making the high-speed water flow ejected from the flushing chamber purer and will not aggravate the blockage of the filter screen.

[0020] Optionally, the first push assembly includes a first connecting rod, a first pulling rod, a first guide rail and a second guide rail, one end of the first connecting rod is fixedly connected to a side of the first piston plate away from the filter screen, and the other end is fixedly connected to the first pulling rod; An open groove for the first connecting rod to pass through is formed on the side wall of the inner casing in the circumferential direction, the first guide rail and the second guide rail are connected end to end to form a ring, and the open groove is connected to the first guide rail and the second guide rail respectively, and the first pulling rod can slide in the first guide rail and the second guide rail; The first guide rail is provided with two sections, and the two first guide rails are respectively opposite to the corresponding filter screens and are in an arc shape. The second guide rail is provided with two sections, and the two second guide rails respectively connect the two ends of the first guide rails. The distance between the second guide rail and the outer wall of the inner casing gradually increases from close to the end of the first guide rail to away from the end of the first guide rail, and the distance reaches the maximum at the middle position of the second guide rail.

[0021] By adopting the above technical solution, during the rotation of the flushing chamber, the first connecting rod will be driven to rotate around the outer peripheral wall of the inner casing, so that the first pulling rod moves in the first guide rail and the second guide rail; When the flushing chamber just leaves the position opposite to the filter screen, the second guide rail will first pull the first pulling rod, so that the first connecting rod drives the first piston plate to pump negative pressure into the flushing chamber, so that groundwater enters the flushing chamber through the water inlet pipe; Then the second guide rail pushes the first pulling rod, so that the first piston plate pressurizes the flushing chamber. When the flushing chamber rotates to face the edge of the filter screen, the valve assembly opens, and the pressurized groundwater is sprayed out from each flushing nozzle to form a high-speed jet to achieve backwashing of the filter screen surface. During this process, cavitation may also occur, thereby achieving a more thorough cleaning of the filter.

[0022] Optionally, the valve opening assembly includes a mounting plate, a valve opening plate, a second connecting rod, a second pulling rod, a third guide rail and a fourth guide rail, the mounting plates are provided with two pieces, and the two mounting plates are fixedly installed in the flushing bin at an interval, the valve opening plate sliding seal is provided between the two mounting plates, one end of the second connecting rod is fixedly connected to the end of the valve opening plate, and the other end is fixedly connected to the second pulling rod; The third guide rails are provided with two groups, and the two third guide rails are respectively arranged opposite to the corresponding filter screens; the fourth guide rails are provided with two groups, and the two fourth guide rails respectively connect the two ends of the two third guide rails; The distance between the two third guide rails and the inner bottom wall of the outer casing gradually increases from close to the fourth guide rail to far away from the fourth guide rail, and reaches the maximum distance at the middle position of the third guide rail. The two fourth guide rails are both arranged in an arc shape.

[0023] By adopting the above technical solution, when the flushing bin rotates to face the edge of the filter screen, the second pulling rod moves into the third guide rail, and the third guide rail pulls the second pulling rod, and the second pulling rod drives the second connecting rod to open the lower part of the valve plate. At this time, the pressurized air drives the water flow to spray out from each flushing nozzle to clean the filter screen; When the rotation continues, the third guide rail will drive the valve plate to close, so that the chamber on the side of the first piston plate close to the filter screen is sealed; When the flushing chamber rotates to the point where it is no longer directly opposite the filter screen, the second pulling rod rotates into the fourth guide rail. Since the fourth guide rail is in an arc shape, the second pulling rod is not affected by the fourth guide rail, so that the valve plate is always in a closed state, making it easier for the first piston plate to draw water into the flushing chamber and pressurize the gas in the cavity where the groundwater is located in the flushing chamber, so that a high-speed jet can be directly ejected later to achieve automatic cleaning of the filter screen.

[0024] Optionally, the drainage mechanism includes a piston cylinder, a second piston plate, a bubble generating assembly and a third push assembly, the piston cylinder is fixed to the outer wall of the storage bin of the outer protective tube and is communicated with the upper cavity of the storage bin, the second piston plate is slidingly sealed and arranged in the piston cylinder, and the second piston plate divides the cavity of the piston cylinder into two chambers that are not communicated with each other; The bubble generating assembly is arranged in the inner wall of the outer casing, and part of it is communicated with the chamber on one side of the second piston plate close to the inner cavity of the storage bin, and the other part is communicated with the inner cavity close to the bottom of the storage bin; The third push assembly is used to drive the second piston plate to adjust the air pressure in the upper cavity of the storage bin.

[0025] By adopting the above technical solution, when the flushing nozzle on the flushing bin ejects a high-speed jet, the third push assembly pulls the second piston plate, so that the second piston plate draws negative pressure on the gas in the upper cavity of the storage bin, so that the impurities entering the water bin can be attracted into the storage bin, so that the impurities are stored in a position away from the filter screen; When the flushing of the flushing nozzle is finished, the third push component will drive the second piston plate to pressurize the piston cylinder. At this time, the bubble generating component automatically generates a large number of bubbles. The large number of bubbles generated will bring the impurities suspended in the storage bin to the top layer of the liquid surface in the storage bin, making the impurities float on the liquid surface, further reducing the clogging effect of impurities on the filter screen.

[0026] Optionally, the bubble generating assembly includes a flow equalizing bin and a bubble nozzle, the flow equalizing bin is arranged around the inner cavity of the storage bin, a plurality of bubble nozzles are provided and are all connected to the inner cavity of the flow equalizing bin, an air guide channel is provided in the inner wall of the outer casing, one end of the air guide channel is connected to the chamber of the second piston plate close to the storage bin, and the other end is connected to the flow equalizing bin; A second one-way valve is provided at one end of the piston cylinder close to the inner cavity of the storage bin for allowing gas in the upper cavity of the storage bin to enter the piston cylinder in one direction, and a third one-way valve is provided in the air guide channel for allowing gas in the piston cylinder to enter the equalizing bin in one direction.

[0027] By adopting the above technical solution, when the second piston plate pressurizes the piston cylinder, the pressurized gas will enter the flow equalization chamber through the air guide channel, and then be sprayed out by each bubble nozzle, thereby generating a large number of bubbles near the bottom of the storage bin, and bringing the impurities suspended in the storage bin to the topmost liquid surface, thereby reducing the impact of the impurities on the filter screen.

[0028] Optionally, the third push assembly includes a third connecting rod, a third pulling rod, a fifth guide rail and a sixth guide rail, one end of the third connecting rod is fixedly connected to the second piston plate, and the other end is fixedly connected to the third pulling rod; A fixed plate is sleeved and fixed on the outer wall of the rotating drum, and both sides of the fixed plate are identically provided with a fifth guide rail and a sixth guide rail. Two groups of fifth guide rails are provided on one side of the fixed plate, and the two fifth guide rails are respectively opposite to the corresponding flushing bins in the vertical direction. Two groups of sixth guide rails are provided, and the two sixth guide rails respectively connect the two ends of the two fifth guide rails to each other; The distance between the fifth guide rail and the side edge of the fixed plate gradually increases from close to the sixth guide rail to away from the sixth guide rail, and reaches the maximum distance at the middle position of the fifth guide rail. Both sixth guide rails are arranged in an arc shape.

[0029] By adopting the above technical solution, when the flushing bin rotates to face the filter screen, the fifth guide rail first pulls the third pulling rod, so that the third pulling rod drives the second piston plate to suck the gas in the upper cavity of the storage bin through the third connecting rod, so that the groundwater in the water transfer bin flows into the storage bin more, and at this time, the floating impurities in the water transfer bin will also be sucked into the storage bin; Then the fifth guide rail pushes the third pulling rod, and finally the second piston plate compresses the space of the piston cylinder, so that the pressurized gas enters the equal flow bin through the gas guide channel, and finally is ejected by each bubble nozzle, so as to absorb and drive the impurities flowing into the storage bin, so that the impurities can finally float on the upper liquid surface of the storage bin, reducing the impact of the cleaned impurities on the filter screen. In addition, the second piston plate can maintain the air pressure balance in the upper cavity of the storage bin during the reciprocating action, so that the storage bin can continuously drain the impurities.

[0030] In summary, the present application includes at least one of the following beneficial technical effects: 1. The filter screen can filter the impurities in the groundwater entering the water storage tank from the water inlet on the outer casing. The driving mechanism can drive the intermittent flushing mechanism to rotate. When it rotates to face the filter screen, the driving mechanism drives the intermittent flushing mechanism to automatically flush the mesh surface of the filter screen, so that the impurities on the filter screen fall off the filter screen and move to the water storage tank; At the same time, the drainage mechanism will set a negative pressure on the upper cavity of the storage bin, so that more groundwater will enter the storage bin from the water transfer bin, thereby draining the impurities diffused into the water transfer bin and draining most of the impurities into the storage bin; When the intermittent flushing mechanism rotates to not face the filter, the intermittent flushing mechanism automatically increases pressure to automatically flush the filter next time it faces the filter, and the drainage mechanism generates a large number of bubbles in the storage bin during this process. The bubbles drive the impurities to float, and eventually transfer a large number of impurities to the upper surface of the groundwater in the storage bin away from the filter, thereby automatically collecting the cleaned impurities and reducing the possibility of the cleaned impurities clogging the filter again. 2. The intermittent flushing mechanism can not only flush the filter with high-speed jets, but also form cavitation in the groundwater during this process. The cavitation can remove the impurities attached to the filter more thoroughly, making the filter clean more thoroughly and reducing the impact of the filter blocking on the normal monitoring of groundwater by the columnar detection end; 3. In the process of cleaning the impurities on the filter net in the flushing chamber, although the filter net can block most of the impurities, it is inevitable that a small number of impurities will pass through the filter net. The cross-sectional area of ​​the flushing chamber is designed to be greater than or equal to the cross-sectional area of ​​the filter net, which can block the impurities passing through the filter net, reducing the possibility of impurities directly entering the columnar detection end and improving the protection of the columnar detection end; 4. Since the water inlet of the water inlet pipe is connected to the gap between the flushing chamber and the inner casing, the groundwater in this space is on the side away from the filter screen, and contains fewer impurities. During cleaning, the impurities passing through the filter screen will be blocked by the flushing chamber, further increasing the difficulty of impurities moving here, thereby making the high-speed water flow ejected from the flushing chamber purer and will not aggravate the blockage of the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0032] Figure 1 It is a schematic diagram of the overall structure of the groundwater monitoring and protection device in the embodiment of the present application; Figure 2 yes Figure 1 Schematic diagram of some structures of groundwater monitoring and protection device; Figure 3 yes Figure 2 A side cross-sectional view of the groundwater monitoring and protection device from the first perspective; Figure 4 yes Figure 2 A side cross-sectional view of the groundwater monitoring and protection device from a second viewing angle; Figure 5 yes Figure 2 A top sectional view of the groundwater monitoring and protection device; Figure 6 yes Figure 2 Cross-sectional view of the inner and outer casing; Figure 7 yes Figure 2 Schematic diagram of part of the internal structure of the groundwater monitoring and protection device.

[0033] Figure numerals: 1, columnar detection end; 2, inner casing; 21, water outlet; 3, outer casing; 31, water outlet; 311, filter screen; 32, storage bin; 4, intermittent flushing mechanism; 41, flushing bin; 42, flushing nozzle; 43, first piston plate; 44, first push assembly; 441, first connecting rod; 442, first pulling rod; 443, first guide rail; 444, second guide rail; 45, water inlet pipe; 46, valve opening assembly; 461, mounting plate; 462, valve opening plate; 463, second connecting rod ; 464, second pulling rod; 465, third guide rail; 466, fourth guide rail; 5, driving mechanism; 51, rotating drum; 52, driving member; 53, gear; 54, outer gear ring; 6, drainage mechanism; 61, piston cylinder; 62, second piston plate; 63, bubble generating assembly; 631, flow equalizing chamber; 632, bubble nozzle; 633, air guide channel; 64, third push assembly; 641, third connecting rod; 642, third pulling rod; 643, fifth guide rail; 644, sixth guide rail; 7, fixing plate. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-7 , further details of this application are given.

[0035] The embodiment of the present application discloses a corrosion-resistant groundwater monitoring and protection device.

[0036] A corrosion-resistant groundwater monitoring and protection device, immersed in groundwater, is used to protect the columnar detection end 1, referring to Figure 1 , Figure 2 and Figure 3 , including an inner casing 2 and an outer casing 3 sleeved outside the inner casing 2, the inner casing 2 is sealingly sleeved on the end of the columnar detection end 1, the outer casing 3 is sealed on the ends of the inner casing 2 and the columnar detection end 1, and the outer casing 3 is fixedly installed in the inner wall of the water well.

[0037] Water outlets 21 are provided on the inner casing 2 and the outer casing 3 corresponding to the openings of the columnar detection end 1 , and each of the water outlets 21 is communicated with the openings of the columnar detection end 1 .

[0038] Reference Figure 2 and Figure 3 The outer casing 3 is hollow inside, and the inner cavity of the outer casing 3 includes a water storage bin 31 connected to the water inlet on the outer casing 3 and a miscellaneous storage bin 32 connected to the top of the water storage bin 31. A filter screen 311 is provided on the side wall of the water storage bin 31 close to the inner casing 2, and the filter screen 311 is directly opposite to the water outlet 21 on the outer casing 3.

[0039] Reference Figure 2 and Figure 3A water storage bin is reserved between the inner wall of the outer casing 3 and the outer wall of the inner casing 2. An intermittent flushing mechanism 4 is provided in the water storage bin for flushing impurities on the filter screen 311 into the water storage bin 31, and a driving mechanism 5 is provided on the columnar detection end 1 for driving the intermittent flushing mechanism 4.

[0040] There is a cavity at the top of the inner cavity of the storage bin 32 which is not submerged by groundwater. The storage bin 32 is provided with a drainage mechanism 6 for adjusting the air pressure in the cavity above the storage bin 32 .

[0041] When the intermittent flushing mechanism 4 rotates to face the filter 311, the intermittent flushing mechanism 4 sprays a high-speed water flow onto the filter 311, and the drainage mechanism 6 draws negative pressure on the upper cavity in the storage bin 32. When the intermittent flushing mechanism 4 rotates from facing the filter 311 to not facing the filter 311, the drainage mechanism 6 generates a large number of bubbles at the bottom of the storage bin 32.

[0042] Reference Figure 2 and Figure 3 The driving mechanism 5 includes a rotating drum 51, a driving member 52, a gear 53 and an outer gear ring 54. The rotating drum 51 is sealed and sleeved on the columnar detection end 1, and the end is transmission-connected to the intermittent flushing mechanism 4. The driving member 52 is a reduction motor. In other embodiments, the driving member 52 can also be configured as a servo motor, a stepping motor, etc. The driving member 52 is installed on the columnar detection end 1, and the gear 53 is coaxially fixed on the output end of the driving member 52. The outer gear ring 54 is sleeved on the rotating drum 51 and meshes with the gear 53.

[0043] Reference Figure 2 , Figure 3 and Figure 4 The intermittent flushing mechanism 4 includes a flushing chamber 41, a flushing nozzle 42, a first piston plate 43, a first push assembly 44, a water inlet pipe 45 and a valve assembly 46. A connecting plate fixedly connected to the flushing chamber 41 is provided at the end of the drum 51. In order to block tiny impurities that may pass through the filter 311 during flushing, the cross-sectional area of ​​the flushing chamber 41 is greater than or equal to the cross-sectional area of ​​the filter 311. In this embodiment, the cross-sectional area of ​​the flushing chamber 41 is the same as the cross-sectional area of ​​the filter 311. A plurality of flushing nozzles 42 are provided, and are spaced apart and arranged on one side of the flushing chamber 41 close to the filter 311.

[0044] The first piston plate 43 is slidingly sealed and arranged in the flushing chamber 41, and divides the space in the flushing chamber 41 into two chambers which are not connected to each other. The first push assembly 44 is used to drive the first piston plate 43 to adjust the air pressure in the space of the flushing chamber 41. The water inlet pipe 45 is buried in the inner wall of the flushing chamber 41, and one end of the water inlet pipe is connected to the chamber of the first piston plate 43 close to the filter screen 311, and the other end is connected to the cavity between the outer casing 3 and the inner casing 2, and a first one-way valve for controlling the flow of water into the flushing chamber 41 is arranged in the water inlet pipe 45.

[0045] The water inlet of the water inlet pipe 45 is connected to the gap between the flushing chamber 41 and the inner casing 2. Since the water inlet of the water inlet pipe 45 is connected to the gap between the flushing chamber 41 and the inner casing 2, the groundwater in this space is on the side away from the filter screen 311, and contains fewer impurities. During cleaning, the impurities passing through the filter screen 311 will be blocked by the flushing chamber 41, further increasing the difficulty of impurities moving here, thereby making the high-speed water flow ejected from the flushing chamber 41 purer and will not aggravate the blockage of the filter screen 311.

[0046] The valve opening assembly 46 is arranged in the space on the side of the first piston plate 43 close to the filter screen 311, and is used to intercept the water entering the flushing chamber 41 in the space on the side of the first piston plate 43 close to the filter screen 311, or to allow the water entering the flushing chamber 41 to be sprayed out by each flushing nozzle 42.

[0047] Reference Figure 3 and Figure 4 The first push assembly 44 includes a first connecting rod 441, a first pulling rod 442, a first guide rail 443 and a second guide rail 444. One end of the first connecting rod 441 is fixedly connected to the side of the first piston plate 43 away from the filter screen 311, and the other end is fixedly connected to the first pulling rod 442.

[0048] An open groove is circumferentially provided on the side wall of the inner casing 2 for the first connecting rod 441 to pass through. The first guide rail 443 and the second guide rail 444 are connected end to end into a ring shape, and the open groove is connected to the first guide rail 443 and the second guide rail 444 respectively. The first pulling rod 442 can slide in the first guide rail 443 and the second guide rail 444.

[0049] Reference Figure 3 , Figure 4 and Figure 5 The first guide rail 443 is provided with two sections, and the two first guide rails 443 are respectively opposite to the corresponding filter screens 311 and are in an arc shape. The second guide rail 444 is provided with two sections, and the two second guide rails 444 respectively connect the two ends of the two first guide rails 443. The distance between the second guide rail 444 and the outer wall of the inner casing 2 gradually increases from the end close to the first guide rail 443 to the end away from the first guide rail 443, and the distance reaches the maximum at the middle position of the second guide rail 444.

[0050] Reference Figure 4 , Figure 5 and Figure 6 The valve opening assembly 46 includes a mounting plate 461, a valve opening plate 462, a second connecting rod 463, a second pulling rod 464, a third guide rail 465 and a fourth guide rail 466. Two mounting plates 461 are provided, and the two mounting plates 461 are fixedly installed in the flushing chamber 41 at an interval. The valve opening plate 462 is slidingly sealed and arranged between the two mounting plates 461. One end of the second connecting rod 463 is fixedly connected to the end of the valve opening plate 462, and the other end is fixedly connected to the second pulling rod 464.

[0051] Two groups of third guide rails 465 are provided, and the two third guide rails 465 are respectively arranged opposite to the corresponding filter screens 311 . Two groups of fourth guide rails 466 are provided, and the two fourth guide rails 466 respectively connect the two ends of the two third guide rails 465 .

[0052] The distance between the two third guide rails 465 and the inner bottom wall of the outer casing 3 gradually increases from close to the fourth guide rail 466 to far away from the fourth guide rail 466, and reaches the maximum distance at the middle position of the third guide rail 465. The two fourth guide rails 466 are both arranged in an arc shape.

[0053] Reference Figure 3 and Figure 4 The drainage mechanism 6 includes a piston cylinder 61, a second piston plate 62, a bubble generating assembly 63 and a third push assembly 64. The piston cylinder 61 is fixed to the outer wall of the storage bin 32 of the outer casing 3 and is connected to the upper cavity of the storage bin 32. The second piston plate 62 is slidingly sealed and arranged in the piston cylinder 61. The second piston plate 62 divides the cavity of the piston cylinder 61 into two chambers that are not connected to each other.

[0054] The bubble generating assembly 63 is arranged in the inner wall of the outer casing 3 , and is partially connected to a side chamber of the second piston plate 62 close to the inner cavity of the storage bin 32 , and the other part is connected to the inner cavity of the storage bin 32 close to the bottom.

[0055] The third push assembly 64 is used to drive the second piston plate 62 to adjust the air pressure in the upper cavity of the storage bin 32 .

[0056] Reference Figure 3 and Figure 4 The bubble generating assembly 63 includes a flow equalizing bin 631 and a bubble nozzle 632. The flow equalizing bin 631 is arranged around the inner cavity of the storage bin 32. A plurality of bubble nozzles 632 are provided and are all connected with the inner cavity of the flow equalizing bin 631. An air guide channel 633 is provided in the inner wall of the outer casing 3. One end of the air guide channel 633 is connected with the chamber of the second piston plate 62 close to the storage bin 32, and the other end is connected with the flow equalizing bin 631.

[0057] A second one-way valve is provided at one end of the piston cylinder 61 close to the inner cavity of the storage bin 32 for allowing the gas in the upper cavity of the storage bin 32 to enter the piston cylinder 61 in one direction, and a third one-way valve is provided in the air guide channel 633 for allowing the gas in the piston cylinder 61 to enter the equalizing bin 631 in one direction.

[0058] Reference Figure 4 and Figure 7 The third push assembly 64 includes a third connecting rod 641, a third pulling rod 642, a fifth guide rail 643 and a sixth guide rail 644. One end of the third connecting rod 641 is fixedly connected to the second piston plate 62, and the other end is fixedly connected to the third pulling rod 642.

[0059] A fixed plate 7 is sleeved and fixed on the outer wall of the rotating drum 51, and the fifth guide rail 643 and the sixth guide rail 644 are identically provided on both sides of the fixed plate 7. Two groups of fifth guide rails 643 are provided on one side of the fixed plate 7, and the two fifth guide rails 643 are respectively opposite to the corresponding flushing bins 41 in the vertical direction. Two groups of sixth guide rails 644 are provided, and the two sixth guide rails 644 respectively connect the two ends of the two fifth guide rails 643 to each other.

[0060] The distance between the fifth guide rail 643 and the side edge of the fixing plate 7 gradually increases from close to the sixth guide rail 644 to far away from the sixth guide rail 644, and reaches the maximum distance at the middle position of the fifth guide rail 643. Both sixth guide rails 644 are arranged in an arc shape.

[0061] In order to clean the impurities floating on the upper surface of the liquid in the storage bin 32, a cleaning mechanism for detecting the amount of impurities in the storage bin 32 and automatically cleaning them is also provided on the outer wall of the storage bin. In this embodiment, the cleaning mechanism is not shown in the figure.

[0062] When the height of the impurities in the storage bin 32 reaches a certain value, the cleaning mechanism will automatically extract the impurities on the upper layer, so that the entire protection device can continuously clean the impurities on the filter screen 311, thereby continuously protecting the columnar detection end 1.

[0063] The implementation principle of the corrosion-resistant groundwater monitoring and protection device of the embodiment of the present application is as follows: the filter screen 311 can filter the impurities in the groundwater entering the water storage tank 31 from the water inlet 21 on the outer casing 3, and the driving mechanism 5 can drive the intermittent flushing mechanism 4 to rotate. When it rotates to face the filter screen 311, the driving mechanism 5 drives the intermittent flushing mechanism 4 to automatically flush the mesh surface of the filter screen 311, so that the impurities on the filter screen 311 fall off the filter screen 311 and move to the water storage tank 31; At the same time, the drainage mechanism 6 will set a negative pressure on the upper cavity of the storage bin 32, so that more groundwater enters the storage bin 32 from the water storage bin 31, thereby draining the impurities diffused into the water storage bin 31, and draining most of the impurities into the storage bin 32; When the intermittent flushing mechanism 4 rotates to no longer face the filter screen 311, the intermittent flushing mechanism 4 is automatically pressurized to automatically flush the filter screen 311 the next time it faces the filter screen 311. During this process, the drainage mechanism 6 will generate a large number of bubbles in the storage bin 32, which will drive the impurities to float and eventually transfer a large amount of impurities to the upper surface of the groundwater in the storage bin 32 away from the filter screen 311, thereby automatically collecting the cleaned impurities and reducing the possibility of the cleaned impurities clogging the filter screen 311 again.

[0064] The above are all optional embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A corrosion-resistant groundwater monitoring and protection device, immersed in groundwater, for protecting a columnar detection end (1), characterized in that: It comprises an inner protective tube (2) and an outer protective tube (3) sleeved outside the inner protective tube (2), wherein the inner protective tube (2) is sealingly sleeved on the end of the columnar detection end (1), and the outer protective tube (3) is sealingly arranged on the ends of the inner protective tube (2) and the columnar detection end (1); The inner casing (2) and the outer casing (3) are provided with water outlets (21) corresponding to the openings of the columnar detection end (1), and each of the water outlets (21) is connected to the openings of the columnar detection end (1); The outer casing (3) is hollow, and the inner cavity of the outer casing (3) comprises a water storage bin (31) connected to the water inlet on the outer casing (3) and a miscellaneous storage bin (32) connected to the top of the water storage bin (31). A filter screen (311) is provided on the side wall of the water storage bin (31) close to the inner casing (2), and the filter screen (311) is directly opposite to the water inlet (21) on the outer casing (3); A water storage bin is reserved between the inner wall of the outer casing (3) and the outer wall of the inner casing (2), and an intermittent flushing mechanism (4) is provided in the water storage bin for flushing impurities on the filter screen (311) into the water storage bin (31), and a driving mechanism (5) is provided on the columnar detection end (1) for driving the intermittent flushing mechanism (4) to operate; A cavity not submerged by groundwater exists at the top of the inner cavity of the storage bin (32), and a drainage mechanism (6) is provided on the storage bin (32) for adjusting the air pressure in the cavity above the storage bin (32); When the intermittent flushing mechanism (4) rotates to face the filter screen (311), the intermittent flushing mechanism (4) sprays a high-speed water flow onto the filter screen (311), and the drainage mechanism (6) applies negative pressure to the upper cavity in the storage bin (32). When the intermittent flushing mechanism (4) rotates from facing the filter screen (311) to not facing the filter screen (311), the drainage mechanism (6) generates a large number of bubbles at the bottom of the storage bin (32).

2. A corrosion-resistant groundwater monitoring and protection device according to claim 1, characterized in that: The driving mechanism (5) comprises a rotating drum (51), a driving member (52), a gear (53) and an outer gear ring (54); the rotating drum (51) is rotatably sealed and sleeved on the columnar detection end (1), and the end portion is transmission-connected to the intermittent flushing mechanism (4); the driving member (52) is mounted on the columnar detection end (1); the gear (53) is coaxially fixed on the output end of the driving member (52); the outer gear ring (54) is sleeved on the rotating drum (51) and meshes with the gear (53).

3. A corrosion-resistant groundwater monitoring and protection device according to claim 2, characterized in that: The intermittent flushing mechanism (4) comprises a flushing chamber (41), a flushing nozzle (42), a first piston plate (43), a first push assembly (44), a water inlet pipe (45) and a valve opening assembly (46); a connecting plate fixedly connected to the flushing chamber (41) is provided at the end of the rotating drum (51); a plurality of flushing nozzles (42) are provided and are spaced apart and arranged on one side of the flushing chamber (41) close to the filter screen (311); The first piston plate (43) is slidingly sealed and arranged in the flushing chamber (41), and divides the space in the flushing chamber (41) into two chambers which are not communicated with each other. The first push assembly (44) is used to drive the first piston plate (43) to adjust the air pressure in the space of the flushing chamber (41). The water inlet pipe (45) is buried in the inner wall of the flushing chamber (41), and one end of the water inlet pipe is connected to the chamber on the side of the first piston plate (43) close to the filter screen (311), and the other end is connected to the cavity between the outer casing (3) and the inner casing (2), and a first one-way valve for controlling the flow of water into the flushing chamber (41) is arranged in the water inlet pipe (45); The valve opening assembly (46) is arranged in the space on the side of the first piston plate (43) close to the filter screen (311), and is used to intercept the water entering the flushing chamber (41) in the space on the side of the first piston plate (43) close to the filter screen (311), or to allow the water entering the flushing chamber (41) to be sprayed out by each of the flushing nozzles (42).

4. A corrosion-resistant groundwater monitoring and protection device according to claim 3, characterized in that: The cross-sectional area of ​​the flushing chamber (41) is greater than or equal to the cross-sectional area of ​​the filter screen (311).

5. The corrosion-resistant groundwater monitoring and protection device according to claim 3 is characterized in that: The water inlet of the water inlet pipe (45) is in communication with the gap between the flushing bin (41) and the inner casing (2).

6. The corrosion-resistant groundwater monitoring and protection device according to claim 3 is characterized by: The first push assembly (44) comprises a first connecting rod (441), a first pulling rod (442), a first guide rail (443) and a second guide rail (444); one end of the first connecting rod (441) is fixedly connected to a side of the first piston plate (43) away from the filter screen (311), and the other end is fixedly connected to the first pulling rod (442); An open groove for the first connecting rod (441) to pass through is provided on the side wall of the inner casing (2) along the circumferential direction, the first guide rail (443) and the second guide rail (444) are connected end to end to form a ring, and the open groove is respectively connected to the first guide rail (443) and the second guide rail (444), and the first pulling rod (442) can slide in the first guide rail (443) and the second guide rail (444); The first guide rail (443) is provided with two sections, and the two first guide rails (443) are respectively opposite to the corresponding filter screen (311) and are in an arc shape. The second guide rail (444) is provided with two sections, and the two second guide rails (444) respectively connect the two ends of the first guide rails (443). The distance between the second guide rail (444) and the outer wall of the inner casing (2) gradually increases from the end close to the first guide rail (443) to the end far away from the first guide rail (443), and the distance reaches the maximum at the middle position of the second guide rail (444).

7. The corrosion-resistant groundwater monitoring and protection device according to claim 3 is characterized by: The valve opening assembly (46) includes a mounting plate (461), a valve opening plate (462), a second connecting rod (463), a second pulling rod (464), a third guide rail (465) and a fourth guide rail (466). Two mounting plates (461) are provided, and the two mounting plates (461) are fixedly installed in the flushing chamber (41) at an interval. The valve opening plate (462) is slidingly sealed and arranged between the two mounting plates (461). One end of the second connecting rod (463) is fixedly connected to the end of the valve opening plate (462), and the other end is fixedly connected to the second pulling rod (464); The third guide rails (465) are provided in two groups, and the two third guide rails (465) are respectively arranged opposite to the corresponding filter screens (311); the fourth guide rails (466) are provided in two groups, and the two fourth guide rails (466) respectively connect the two ends of the two third guide rails (465); The distance between the two third guide rails (465) and the inner bottom wall of the outer casing (3) gradually increases from close to the fourth guide rail (466) to away from the fourth guide rail (466), and reaches the maximum distance at the middle position of the third guide rail (465). The two fourth guide rails (466) are both arranged in an arc shape.

8. The corrosion-resistant groundwater monitoring and protection device according to claim 3 is characterized by: The drainage mechanism (6) comprises a piston cylinder (61), a second piston plate (62), a bubble generating assembly (63) and a third push assembly (64); the piston cylinder (61) is fixed to the outer wall of the storage bin (32) of the outer protective tube (3) and is in communication with the upper cavity of the storage bin (32); the second piston plate (62) is slidingly sealed and arranged in the piston cylinder (61); the second piston plate (62) divides the cavity of the piston cylinder (61) into two chambers which are not in communication with each other; The bubble generating assembly (63) is arranged in the inner wall of the outer casing (3), and is partially communicated with a side chamber of the second piston plate (62) close to the inner cavity of the storage bin (32), and the other part is communicated with the inner cavity of the storage bin (32) close to the bottom; The third push assembly (64) is used to drive the second piston plate (62) to adjust the air pressure in the upper cavity of the storage bin (32).

9. The corrosion-resistant groundwater monitoring and protection device according to claim 8, characterized in that: The bubble generating assembly (63) comprises a flow balancing chamber (631) and a bubble nozzle (632), wherein the flow balancing chamber (631) is arranged around the inner cavity of the storage chamber (32), a plurality of bubble nozzles (632) are provided and are all connected to the inner cavity of the flow balancing chamber (631), and an air guide channel (633) is provided in the inner wall of the outer casing (3), wherein one end of the air guide channel (633) is connected to a chamber of the second piston plate (62) close to the storage chamber (32), and the other end is connected to the flow balancing chamber (631); A second one-way valve is provided at one end of the piston cylinder (61) close to the inner cavity of the storage bin (32) for allowing gas in the upper cavity of the storage bin (32) to enter the piston cylinder (61) in one direction, and a third one-way valve is provided in the air guide channel (633) for allowing gas in the piston cylinder (61) to enter the equalizing bin (631) in one direction.

10. The corrosion-resistant groundwater monitoring and protection device according to claim 8, characterized in that: The third push assembly (64) comprises a third connecting rod (641), a third pulling rod (642), a fifth guide rail (643) and a sixth guide rail (644); one end of the third connecting rod (641) is fixedly connected to the second piston plate (62), and the other end is fixedly connected to the third pulling rod (642); A fixing plate (7) is sleeved and fixed on the outer wall of the rotating drum (51), and both sides of the fixing plate (7) are identically provided with a fifth guide rail (643) and a sixth guide rail (644). Two groups of fifth guide rails (643) are provided on one side of the fixing plate (7), and the two fifth guide rails (643) are respectively opposite to the corresponding flushing bin (41) in the vertical direction. Two groups of sixth guide rails (644) are provided, and the two sixth guide rails (644) respectively connect the two ends of the two fifth guide rails (643) to each other. Furthermore, the distance between the fifth guide rail (643) and the side edge of the fixed plate (7) gradually increases from being close to the sixth guide rail (644) to being away from the sixth guide rail (644), and reaches a maximum distance at the middle position of the fifth guide rail (643). Both sixth guide rails (644) are arranged in an arc shape.

Images