Corrosion-resistant groundwater monitoring protection device

Abstract

The application relates to the technical field of groundwater monitoring, and particularly discloses a corrosion-resistant groundwater monitoring protection device, which comprises an inner protection cylinder and an outer protection cylinder, a cavity is reserved between the inner protection cylinder and the outer protection cylinder, a filter screen is arranged on the side wall of the outer protection cylinder, the device further comprises an intermittent flushing mechanism for cleaning the filter screen, a driving mechanism for driving the intermittent flushing mechanism to rotate, and a drainage mechanism for attracting impurities flushed from the filter screen. The filter screen can filter the impurities in the groundwater, the driving mechanism can drive the intermittent flushing mechanism to clean the filter screen, the impurities cleaned can be drained to a position far away from the filter screen, a large amount of bubbles are generated to assist the transfer of the impurities, the possibility of the impurities cleaned adhering to the filter screen again is greatly reduced, the service life and the replacement frequency of the filter screen are prolonged, and the protection of the columnar detection end is realized.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of groundwater monitoring, in particular to a corrosion-resistant groundwater monitoring protection device. BACKGROUND

[0002] With the enhancement of environmental protection consciousness, groundwater monitoring plays an increasingly important role in water resource management and pollution prevention. Groundwater monitoring technology is widely used in water quality detection, pollution source monitoring, groundwater resource assessment and other fields. By monitoring water quality parameters in groundwater in real time, such as temperature, pH value, oxidation-reduction potential, dissolved oxygen and heavy metal content, changes in water quality can be found in time, and the health status of groundwater can be evaluated, thereby providing a scientific basis for water resource management decision-making. At present, groundwater monitoring technology mostly uses groundwater detectors with good corrosion resistance and stable structure to ensure long-term stable operation in complex underground environment.

[0003] The structure of the groundwater detector usually includes a sensor, a data acquisition system, a protective shell and a columnar detection end. A plurality of through holes are formed in the end of the columnar detection end, and the purpose is to enable groundwater to smoothly enter the inside of the columnar detection end and contact the internal sensor, thereby realizing real-time monitoring of various substances in the groundwater.

[0004] However, although the design of the through holes can effectively realize the inflow and detection of groundwater, the groundwater often contains a large amount of suspended solids, oil substances and other impurities. These impurities are easy to adhere or deposit inside the through holes of the columnar detection end when the water flow passes through the through holes, thereby affecting the normal work of the columnar detection end. The blockage of the through holes by suspended solids not only causes poor water flow and reduces the amount of effective water sample entering the columnar detection end, but also may cause contamination of the sensor surface, thereby reducing the detection accuracy. 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, effective protection must be provided for the columnar detection end to prevent suspended solids and oil substances from entering the through holes, reduce equipment damage and maintenance cost, and prolong the service life. SUMMARY

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

[0006] The corrosion-resistant groundwater monitoring protection device provided by the application adopts the following technical scheme:

[0007] The application discloses a corrosion-resistant groundwater monitoring protection device which is immersed in groundwater and used for protecting a columnar detection end, comprising an inner protection cylinder and an outer protection cylinder sleeved outside the inner protection cylinder, the inner protection cylinder is sealingly sleeved at the end of the columnar detection end, and the outer protection cylinder is sealingly arranged at the end of the inner protection cylinder and the columnar detection end.

[0008] Corresponding to the columnar detection end, the inner protection cylinder and the outer protection cylinder are provided with water passing openings, and each water passing opening is in communication with the opening of the columnar detection end.

[0009] The outer protection cylinder is hollow, the inner cavity of the outer protection cylinder comprises a water passing warehouse in communication with a water inlet on the outer protection cylinder and a sundry storage warehouse arranged at the top of the water passing warehouse, a filter screen is arranged on the side wall of the inner protection cylinder close to the water passing warehouse, and the filter screen is opposite to the water passing opening on the outer protection cylinder.

[0010] An inner side wall of the outer protection cylinder and an outer side wall of the inner protection cylinder are provided with a water storage warehouse, the water storage warehouse is provided with an intermittent flushing mechanism for flushing sundries on the filter screen into the water passing warehouse, and the columnar detection end is provided with a driving mechanism for driving the intermittent flushing mechanism to act.

[0011] The top of the inner cavity of the sundry storage warehouse is provided with an empty cavity which is not immersed in groundwater, and the sundry storage warehouse is provided with a drainage mechanism for adjusting the air pressure in the empty cavity at the top of the sundry storage warehouse.

[0012] When the intermittent flushing mechanism rotates to be opposite to the filter screen, the intermittent flushing mechanism sprays high-speed water flow on the filter screen, the drainage mechanism performs negative pressure extraction on the empty cavity at the top of the sundry storage warehouse, and when the intermittent flushing mechanism rotates from the state of being opposite to the filter screen to being not opposite to the filter screen, the drainage mechanism generates a large amount of bubbles at the bottom of the sundry storage warehouse.

[0013] By adopting the technical scheme, the filter screen can filter sundries in the groundwater entering the water passing warehouse from the water passing opening on the outer protection cylinder, the driving mechanism can drive the intermittent flushing mechanism to rotate, when the intermittent flushing mechanism rotates to be opposite to the filter screen, the driving mechanism drives the intermittent flushing mechanism to automatically flush the screen surface of the filter screen, so that the sundries on the filter screen fall off the filter screen and move into the water passing warehouse.

[0014] At the same time, the drainage mechanism performs negative pressure extraction on the empty cavity at the top of the sundry storage warehouse, so that more groundwater enters the sundry storage warehouse from the water passing warehouse, thereby draining the sundries diffused into the water passing warehouse and draining most of the sundries into the sundry storage warehouse.

[0015] When the intermittent washing mechanism rotates to be not opposite to the filter screen, the intermittent washing mechanism is automatically pressurized to realize automatic washing of the filter screen when the intermittent washing mechanism is opposite to the filter screen next time, and the drainage mechanism generates a large amount of bubbles in the impurity storage bin in the process, the bubbles drive the impurities to float, and finally a large amount of impurities are transferred to the upper surface of the underground water in the impurity storage bin far away from the filter screen, so that the cleaned impurities are automatically collected, and the possibility of re-blocking of the filter screen by the cleaned impurities is reduced.

[0016] Optionally, the driving mechanism comprises a rotating drum, a driving member, a gear and an external gear ring, the rotating drum is rotatably sleeved on the columnar detection end, and the end is in transmission connection with the intermittent washing 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 external gear ring is sleeved on the rotating drum and is in meshing connection with the gear.

[0017] By adopting the above technical scheme, when the driving member works, the gear is driven to rotate, the external gear ring is driven to rotate by the gear, and the rotating drum is driven to rotate by the external gear ring, so that the washing treatment of the intermittent washing mechanism is realized.

[0018] Optionally, the intermittent washing mechanism comprises a washing bin, a plurality of washing nozzles, a first piston plate, a first pushing assembly, a water inlet pipe and a valve opening assembly, the end of the rotating drum is provided with a connecting plate fixedly connected with the washing bin, the washing nozzles are provided in plurality and are arranged at intervals on one side of the washing bin close to the filter screen.

[0019] The first piston plate is slidingly and sealingly arranged in the washing bin and divides the space in the washing bin into two cavities not communicated with each other, the first pushing assembly is used for adjusting the air pressure of the space in the washing bin, the water inlet pipe is embedded in the inner wall of the washing bin and has one end in communication with the cavity on the side of the first piston plate close to the filter screen and the other end in communication with the cavity between the outer sleeve and the inner sleeve, and the water inlet pipe is provided with a first one-way valve for controlling the flow of water into the washing bin.

[0020] The valve opening assembly is arranged in the space on the side of the first piston plate close to the filter screen and is used for cutting off the water entering the washing bin in the space on the side of the first piston plate close to the filter screen or making the water entering the washing bin sprayed out from each washing nozzle.

[0021] By adopting the above technical scheme, when the outer sleeve drives the washing bin to rotate to be opposite to the filter screen, the valve opening assembly is opened at this time, the first pushing assembly drives the first piston plate to spray the water entering the washing bin through the water inlet pipe out from each washing nozzle, so that the impurities on the surface of the filter screen are cleaned.

[0022] In this process, the high-speed water flow sprayed by each flushing nozzle can form cavitation in the underground water, which can more thoroughly remove the impurities attached to the filter screen, making the cleaning of the filter screen more thorough, and reducing the impact of the filter screen blockage on the normal monitoring of the columnar detection end to the underground water.

[0023] Continue to rotate, the first push assembly first drives the first piston plate to suck the filtered underground water inside the filter screen into the flushing chamber, realizing the replenishment of the water used for spraying in the flushing chamber;

[0024] Continue to rotate, the first push assembly drives the first piston plate to compress the water sucked into the flushing chamber. Since there is always air in the flushing chamber and the flushing chamber is not completely filled each time, the first push assembly will compress the air, increasing the air pressure in the flushing chamber.

[0025] When the flushing chamber is rotated again to be opposite to the filter screen on the other side, the valve assembly is automatically opened, and the pressurized air sprays the water in the flushing chamber at high speed, thereby realizing the cleaning of the impurities on the filter screen.

[0026] Optionally, the cross-sectional area of the flushing chamber is greater than or equal to the cross-sectional area of the filter screen.

[0027] By adopting the above technical solution, in the process of cleaning the impurities on the filter screen by the flushing chamber, although the filter screen can block most of the impurities, it is inevitable that a small part of the impurities will pass through the filter screen. The design of the cross-sectional area of the flushing chamber being greater than or equal to the cross-sectional area of the filter screen can block the impurities that pass through the filter screen, reduce the possibility of the impurities directly entering the inside of the columnar detection end, and improve the protection of the columnar detection end.

[0028] Optionally, the water inlet of the water inlet pipe is communicated with the gap between the flushing chamber and the inner casing.

[0029] By adopting the above technical solution, since the water inlet of the water inlet pipe is communicated with the gap between the flushing chamber and the inner casing, the underground water in this space is on the side far away from the filter screen, contains fewer impurities, and the impurities that pass through the filter screen during cleaning will be blocked by the flushing chamber, further improving the difficulty of the impurities moving to this place, so that the high-speed water flow sprayed by the flushing chamber is more pure and will not aggravate the blockage of the filter screen.

[0030] 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 the side of the first piston plate away from the filter screen, and the other end is fixedly connected to the first pulling rod.

[0031] The inner sleeve side wall is provided with an opening slot for the first connecting rod to pass through in the circumferential direction, the first guide rail and the second guide rail are connected end to end to form a ring, and the opening slot is in communication with 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;

[0032] The first guide rail is provided with two sections, the two first guide rails are respectively opposite to the corresponding filter screens and are in the shape of a circular arc, the second guide rail is provided with two sections, the two second guide rails are respectively in communication with the two ends of the two first guide rails, the distance between the second guide rail and the outer wall of the inner sleeve gradually increases from the end of the first guide rail to the end away from the first guide rail, and the distance reaches the maximum at the middle position of the second guide rail.

[0033] By adopting the above technical scheme, in the process of rotating the flushing bin, the first connecting rod is driven to rotate around the outer peripheral wall of the inner sleeve, and the first pulling rod moves in the first guide rail and the second guide rail;

[0034] When the flushing bin 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 draw negative pressure in the flushing bin, so that the underground water enters the flushing bin through the water inlet pipe;

[0035] Then the second guide rail pushes the first pulling rod, so that the first piston plate pressurizes the flushing bin, and when the flushing bin rotates to the position opposite to the edge of the filter screen, the valve opening assembly is opened at this time, and the pressurized underground water is sprayed out of each flushing nozzle to form a high-speed jet, thereby realizing backwashing of the surface of the filter screen;

[0036] And in this process, cavitation phenomenon may also occur, thereby realizing more thorough cleaning of the filter screen.

[0037] Optionally, the valve opening assembly comprises 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 plate is provided with two blocks, and the two mounting plates are fixedly installed in the flushing bin at intervals, the valve opening plate is slidingly and sealingly arranged between the two mounting plates, one end of the second connecting rod is fixedly connected with the end of the valve opening plate, and the other end is fixedly connected with the second pulling rod;

[0038] The third guide rail is provided with two groups, and the two third guide rails are respectively arranged opposite to the corresponding filter screens, the fourth guide rail is provided with two groups, and the two fourth guide rails are respectively in communication with the two ends of the two third guide rails;

[0039] The distance between the two third guide rails and the inner bottom wall of the outer sleeve gradually increases from the fourth guide rail to the fourth guide rail away from the fourth guide rail, and the distance reaches the maximum at the middle position of the third guide rail, and the two fourth guide rails are arranged in the shape of a circular arc.

[0040] By adopting the technical scheme, when the flushing bin is rotated to be opposite to the edge of the filter screen, the second pulling rod is moved into the third guide rail, at this time, the third guide rail pulls the second pulling rod, the second pulling rod drives the second connecting rod, and the lower part of the valve plate is opened, at this time, the pressurized air drives the water flow to be sprayed from each flushing nozzle, and the filter screen is cleaned;

[0041] When the flushing bin is continuously rotated, the third guide rail drives the valve plate to be closed, and the chamber on the side close to the filter screen of the first piston plate is sealed;

[0042] When the flushing bin is rotated to be not opposite to the filter screen, at this time, the second pulling rod is rotated into the fourth guide rail, because the fourth guide rail is in the shape of a circular arc, at this time, the second pulling rod is not affected by the fourth guide rail, so that the valve plate is always in a closed state, the first piston plate is convenient to suck the water into the flushing bin and pressurize the gas in the cavity of the water in the flushing bin, and it is convenient to directly spray high-speed jet flow in the subsequent process, and the filter screen is automatically cleaned.

[0043] Optionally, the drainage mechanism comprises a piston cylinder, a second piston plate, a bubble generating assembly and a third pushing assembly, the piston cylinder is fixed to the outer wall of the storage bin of the outer protective cylinder and communicates with the upper cavity of the storage bin, the second piston plate is slidingly and sealingly 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;

[0044] The bubble generating assembly is arranged in the inner wall of the outer protective cylinder, and part of the bubble generating assembly communicates with the chamber on the side close to the inner cavity of the storage bin of the second piston plate, and the other part communicates with the inner cavity close to the bottom of the storage bin;

[0045] The third pushing assembly is used to drive the second piston plate to adjust the air pressure in the upper cavity of the storage bin.

[0046] By adopting the technical scheme, when the flushing nozzle on the flushing bin sprays high-speed jet flow, the third pushing assembly pulls the second piston plate, the second piston plate performs negative pressure treatment on the gas in the upper cavity of the storage bin, so that the impurities in the water inlet bin can be attracted to the storage bin, and the impurities are stored in a position away from the filter screen;

[0047] When the flushing of the flushing nozzle is completed, the third pushing assembly drives the second piston plate to pressurize the piston cylinder, at this time, the bubble generating assembly automatically generates a large amount of bubbles, the large amount of bubbles generated can take the impurities suspended in the storage bin to the uppermost layer of the liquid surface in the storage bin, so that the impurities float on the liquid surface, and the influence of the impurities on the blockage of the filter screen is further reduced.

[0048] Optionally, the bubble generating assembly comprises a flow equalizing chamber and bubble nozzles, the flow equalizing chamber is arranged around the inner cavity of the impurity storage chamber, the bubble nozzles are provided in plurality and are in communication with the inner cavity of the flow equalizing chamber, the inner wall of the outer sleeve is provided with a gas guide channel, one end of the gas guide channel is in communication with the chamber on the side of the second piston plate close to the impurity storage chamber, and the other end is in communication with the flow equalizing chamber.

[0049] The end of the piston sleeve close to the inner cavity of the impurity storage chamber is provided with a second one-way valve for allowing the gas in the upper cavity of the impurity storage chamber to enter the piston sleeve in one direction, and the gas guide channel is provided with a third one-way valve for allowing the gas in the piston sleeve to enter the flow equalizing chamber in one direction.

[0050] By adopting the above technical scheme, when the second piston plate pressurizes the piston sleeve, the pressurized gas enters the flow equalizing chamber through the gas guide channel and is sprayed out by the bubble nozzles, thereby generating a large amount of bubbles at the position close to the bottom of the impurity storage chamber, and the impurities suspended in the impurity storage chamber are brought to the liquid surface at the uppermost layer, thereby reducing the influence of the impurities on the filter screen.

[0051] Optionally, the third pushing assembly comprises 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 with the second piston plate, and the other end is fixedly connected with the third pulling rod.

[0052] The outer wall of the rotating drum is sleeved with a fixed plate, the fifth guide rail and the sixth guide rail are arranged on both sides of the fixed plate, two groups of fifth guide rails are arranged on one side of the fixed plate, the fifth guide rails are vertically opposite to the corresponding flushing chambers, the sixth guide rail is provided in two groups, and the two ends of the two fifth guide rails are communicated with each other through the two sixth guide rails.

[0053] The distance between the fifth guide rail and the side edge of the fixed plate gradually increases from the sixth guide rail to the sixth guide rail, and the distance reaches the maximum at the middle position of the fifth guide rail, and the two sixth guide rails are arranged in arc shape.

[0054] By adopting the above technical scheme, when the flushing chamber is rotated to be opposite to the filter screen, the fifth guide rail first pulls the third pulling rod at this time, so that the third pulling rod drives the second piston plate to suck the gas in the upper cavity of the impurity storage chamber through the third connecting rod, so that the underground water in the water passing chamber flows into the impurity storage chamber, and the impurities floating in the water passing chamber are also sucked into the impurity storage chamber.

[0055] Then, the fifth guide rail pushes the third pull rod, ultimately causing the second piston plate to compress the space in the piston cylinder. This allows the pressurized gas to enter the equalization chamber through the air guide channel, and finally be ejected by the bubble nozzles. This process adsorbs and carries away the impurities flowing into the storage chamber, ensuring that the impurities float on the upper liquid surface of the storage chamber, reducing the impact of the cleaned impurities on the filter screen. Furthermore, the second piston plate maintains the air pressure balance in the upper cavity of the storage chamber during its reciprocating motion, allowing the storage chamber to continuously guide impurities.

[0056] In summary, this application includes at least one of the following beneficial technical effects:

[0057] 1. The filter screen can filter impurities in the groundwater entering the water chamber from the water inlet on the outer casing. The drive mechanism can drive the intermittent flushing mechanism to rotate. When it rotates to face the filter screen, the drive mechanism drives the intermittent flushing mechanism to automatically flush the surface of the filter screen, so that the impurities on the filter screen fall off the filter screen and move into the water chamber.

[0058] At the same time, the diversion mechanism will draw negative pressure into the upper cavity of the storage bin, so that more groundwater will enter the storage bin from the water passage bin, thereby diverting the impurities that have diffused into the water passage bin and diverting most of the impurities into the storage bin.

[0059] When the intermittent flushing mechanism rotates to a position where it is not directly aligned with the filter screen, it automatically pressurizes to ensure that it will automatically flush the filter screen the next time it is aligned with it. During this process, the diversion mechanism generates a large number of bubbles in the impurity storage bin. These bubbles carry impurities to the surface and eventually transfer a large number of impurities to the surface of the groundwater in the impurity storage bin, which is far away from the filter screen. This achieves automatic collection of the cleaned impurities and reduces the possibility of the cleaned impurities clogging the filter screen again.

[0060] 2. The intermittent flushing mechanism can not only flush the filter screen with high-speed jets, but also may form cavitation in the groundwater during this process. Cavitation will more thoroughly remove the impurities attached to the filter screen, making the filter screen cleaner and reducing the impact of filter screen blockage on the normal monitoring of groundwater by the column detection end.

[0061] 3. During the cleaning process of the filter screen in the rinsing chamber, although the filter screen can block most of the impurities, it is unavoidable that a very small number of impurities will pass through the filter screen. The cross-sectional area of ​​the rinsing chamber is designed to be greater than or equal to the cross-sectional area of ​​the filter screen, which can block the impurities that pass through the filter screen, reduce the possibility of impurities directly entering the columnar detection end, and improve the protection of the columnar detection end.

[0062] 4. Since the water inlet of the water inlet pipe is communicated with the gap between the flushing bin and the inner casing, the groundwater in this space is far away from the filter screen, and contains less impurities. When cleaning, the impurities passing through the filter screen will be blocked by the flushing bin, further increasing the difficulty of impurities moving to this place, so that the high-speed water flow sprayed by the flushing bin is more pure and will not aggravate the blockage of the filter screen. BRIEF DESCRIPTION OF DRAWINGS

[0063] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0064] Figure 1 is the overall structure diagram of the groundwater monitoring and protection device in the present application;

[0065] Figure 2 is the partial structure diagram of the groundwater monitoring and protection device in the present application; Figure 1

[0066] Figure 3 is the side view of the first perspective of the groundwater monitoring and protection device in the present application; Figure 2

[0067] Figure 4 is the side view of the second perspective of the groundwater monitoring and protection device in the present application; Figure 2

[0068] Figure 5 is the downward view of the groundwater monitoring and protection device in the present application; Figure 2

[0069] Figure 6 is the cross-sectional view of the outer casing in the present application; Figure 2

[0070] Figure 7 is the partial internal structure diagram of the groundwater monitoring and protection device in the present application. Figure 2

[0071] ​​​​​​Label: 1, columnar detection end; 2, inner protection cylinder; 21, water passage; 3, outer protection cylinder; 31, water passage; 311, filter screen; 32, impurity storage bin; 4, intermittent flushing mechanism; 41, flushing bin; 42, flushing nozzle; 43, first piston plate; 44, first pushing 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 piece; 53, gear; 54, outer gear ring; 6, drainage mechanism; 61, piston cylinder; 62, second piston plate; 63, bubble generating assembly; 631, flow equalizing bin; 632, bubble nozzle; 633, air guide channel; 64, third pushing assembly; 641, third connecting rod; 642, third pulling rod; 643, fifth guide rail; 644, sixth guide rail; 7, fixed plate. DETAILED DESCRIPTION

[0072] The following will be described in detail with reference to the accompanying drawings. Figures 1-7 The present application will be further described in detail.

[0073] The present application discloses a corrosion-resistant groundwater monitoring protection device.

[0074] A corrosion-resistant groundwater monitoring protection device is immersed in groundwater and used for protecting the columnar detection end 1. Figure 1 , Figure 2 and Figure 3 , comprising an inner protection cylinder 2 and an outer protection cylinder 3 sleeved outside the inner protection cylinder 2, the inner protection cylinder 2 is sealingly sleeved at the end of the columnar detection end 1, the outer protection cylinder 3 is sealingly arranged at the end of the inner protection cylinder 2 and the columnar detection end 1, and the outer protection cylinder 3 is fixedly installed in the inner wall of the water well.

[0075] The inner protection cylinder 2 and the outer protection cylinder 3 are provided with water passages 21 corresponding to the openings of the columnar detection end 1, and each water passage 21 is in communication with the opening of the columnar detection end 1.

[0076] Referring to Figure 2 and Figure 3 , the outer protection cylinder 3 is hollow, the inner cavity of the outer protection cylinder 3 comprises a water passage 31 in communication with a water inlet on the outer protection cylinder 3 and an impurity storage bin 32 arranged on the top of the water passage 31, and the water passage 31 is provided with a filter screen 311 on the side wall close to the inner protection cylinder 2, and the filter screen 311 is opposite to the water passage 21 on the outer protection cylinder 3.

[0077] Referring to Figure 2 and Figure 3The inner side wall of the outer sleeve 3 and the outer side wall of the inner sleeve 2 are provided with a water storage bin, and the water storage bin is provided with an intermittent flushing mechanism 4 for flushing the impurities on the filter screen 311 into the water passing bin 31, and the cylindrical detection end 1 is provided with a driving mechanism 5 for driving the intermittent flushing mechanism 4 to act.

[0078] The inner cavity of the impurity storage bin 32 has an un-submerged cavity at the top, and the impurity storage bin 32 is provided with a drainage mechanism 6 for adjusting the air pressure in the cavity at the top of the impurity storage bin 32.

[0079] When the intermittent flushing mechanism 4 rotates to be opposite to the filter screen 311, the intermittent flushing mechanism 4 sprays high-speed water flow onto the filter screen 311, and the drainage mechanism 6 performs negative pressure extraction on the upper cavity in the impurity storage bin 32, when the intermittent flushing mechanism 4 rotates from the state of being opposite to the filter screen 311 to not being opposite to the filter screen 311, the drainage mechanism 6 generates a large number of air bubbles at the bottom of the impurity storage bin 32.

[0080] Referring to Figure 2 and Figure 3 , the driving mechanism 5 includes a rotating barrel 51, a driving part 52, a gear 53, and an outer gear ring 54, the rotating barrel 51 is rotatably sleeved on the cylindrical detection end 1, and the end is in transmission connection with the intermittent flushing mechanism 4, the driving part 52 is a speed reducer motor, in other embodiments, the driving part 52 can also be set as a servo motor, a stepping motor, etc., the driving part 52 is installed on the cylindrical detection end 1, the gear 53 is coaxially fixed on the output end of the driving part 52, and the outer gear ring 54 is sleeved on the rotating barrel 51 and is in meshing connection with the gear 53.

[0081] Referring to Figure 2 , Figure 3 and Figure 4 , the intermittent flushing mechanism 4 includes a flushing bin 41, a flushing nozzle 42, a first piston plate 43, a first pushing assembly 44, a water inlet pipe 45, and an opening valve assembly 46, the end of the rotating barrel 51 is provided with a connecting plate fixedly connected with the flushing bin 41, in order to block the tiny impurities that may pass through the filter screen 311 during flushing, the cross-sectional area of the flushing bin 41 is greater than or equal to the cross-sectional area of the filter screen 311, in this embodiment, the cross-sectional area of the flushing bin 41 is the same as the cross-sectional area of the filter screen 311. The flushing nozzle 42 is provided with a plurality of flushing nozzles, which are arranged at intervals on one side of the flushing bin 41 close to the filter screen 311.

[0082] The first piston plate 43 is slidably sealed inside the flushing chamber 41, dividing the space inside the flushing chamber 41 into two non-communicating chambers. The first pushing component 44 is used to drive the first piston plate 43 to adjust the air pressure inside the flushing chamber 41. The water inlet pipe 45 is embedded in the inner wall of the flushing chamber 41, with one end connected to the chamber on the side of the first piston plate 43 near the filter screen 311, and the other end connected to the cavity between the outer protective sleeve 3 and the inner protective sleeve 2. A first one-way valve is provided inside the water inlet pipe 45 to control the flow of water into the flushing chamber 41.

[0083] The inlet of the water inlet pipe 45 is connected to the gap between the flushing chamber 41 and the inner protective cylinder 2. Because the inlet of the water inlet pipe 45 is connected to the gap between the flushing chamber 41 and the inner protective cylinder 2, the groundwater in this space is on the side away from the filter screen 311, and it contains fewer impurities. Moreover, the impurities that pass through the filter screen 311 during cleaning will be blocked by the flushing chamber 41, which further increases the difficulty for impurities to move to this place, thereby making the high-speed water jet from the flushing chamber 41 purer and not aggravating the clogging of the filter screen 311.

[0084] The valve opening assembly 46 is disposed in the space of the first piston plate 43 near the filter screen 311, and is used to intercept the water entering the flushing chamber 41 in the space of the first piston plate 43 near the filter screen 311, or to make the water entering the flushing chamber 41 sprayed out by each flushing nozzle 42.

[0085] Reference Figure 3 and Figure 4 The first pushing 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.

[0086] An opening groove is provided on the side wall of the inner sleeve 2 along the circumferential direction 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 to form a ring, and the opening 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.

[0087] 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 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 two first guide rails 443. The distance between the second guide rail 444 and the outer wall of the inner protective cylinder 2 gradually increases from the end near 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.

[0088] With reference to Figure 4 , Figure 5 and Figure 6 , the valve opening assembly 46 comprises two mounting plates 461, a valve plate 462, a second connecting rod 463, a second pull rod 464, a third guide rail 465 and a fourth guide rail 466. The two mounting plates 461 are fixedly arranged in the washing bin 41 in a spaced manner, and the valve plate 462 is slidingly arranged between the two mounting plates 461. One end of the second connecting rod 463 is fixedly connected with the end of the valve plate 462, and the other end is fixedly connected with the second pull rod 464.

[0089] The third guide rail 465 is provided with two groups, and the two third guide rails 465 are arranged opposite to the corresponding filter screen 311. The fourth guide rail 466 is provided with two groups, and the two fourth guide rails 466 are arranged to communicate with the two ends of the two third guide rails 465.

[0090] The distance between the two third guide rails 465 and the inner bottom wall of the outer sleeve 3 gradually increases from the fourth guide rail 466 to the fourth guide rail 466, and the distance reaches the maximum at the middle position of the third guide rail 465. The two fourth guide rails 466 are arranged in a circular arc shape.

[0091] With reference to Figure 3 and Figure 4 , the drainage mechanism 6 comprises a piston cylinder 61, a second piston plate 62, a bubble generating assembly 63 and a third pushing assembly 64. The piston cylinder 61 is fixed to the outer wall of the storage bin 32 of the outer sleeve 3 and communicates with the upper cavity of the storage bin 32. The second piston plate 62 is slidingly arranged in the piston cylinder 61, and the second piston plate 62 divides the cavity of the piston cylinder 61 into two chambers that are not communicated with each other.

[0092] The bubble generating assembly 63 is arranged in the inner wall of the outer sleeve 3, and part of the bubble generating assembly 63 communicates with the side chamber of the second piston plate 62 close to the inner cavity of the storage bin 32, and the other part communicates with the inner cavity close to the bottom of the storage bin 32.

[0093] The third pushing 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.

[0094] With reference to Figure 3 and Figure 4 , the bubble generating assembly 63 comprises a flow equalizing bin 631 and a bubble nozzle 632. The flow equalizing bin 631 is arranged in the inner cavity of the storage bin 32 in a surrounding manner. The bubble nozzle 632 is provided with a plurality of nozzles and communicates with the inner cavity of the flow equalizing bin 631. The inner wall of the outer sleeve 3 is provided with a gas guide channel 633. One end of the gas guide channel 633 communicates with the chamber of the second piston plate 62 close to the side of the storage bin 32, and the other end communicates with the flow equalizing bin 631.

[0095] The piston cylinder 61 is provided with a second one-way valve for allowing the gas in the upper cavity of the storage tank 32 to enter the piston cylinder 61 unidirectionally at one end close to the inner cavity of the storage tank 32, and the gas guide channel 633 is provided with a third one-way valve for allowing the gas in the piston cylinder 61 to enter the flow equalization tank 631 unidirectionally.

[0096] With reference to Figure 4 and Figure 7 The third pushing 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 with the second piston plate 62, and the other end is fixedly connected with the third pulling rod 642.

[0097] The fixed plate 7 is fixedly sleeved on the outer wall of the rotating drum 51. The fifth guide rail 643 and the sixth guide rail 644 are arranged on both sides of the fixed plate 7. Two groups of fifth guide rails 643 are arranged on one side of the fixed plate 7, and the two fifth guide rails 643 are respectively opposite to the corresponding washing tanks 41 in the vertical direction. Two groups of sixth guide rails 644 are arranged, and the two sixth guide rails 644 are respectively connected with the two ends of the two fifth guide rails 643.

[0098] The distance between the fifth guide rail 643 and the side edge of the fixed plate 7 gradually increases from the sixth guide rail 644 to the sixth guide rail 644, and the distance reaches the maximum at the middle position of the fifth guide rail 643. The two sixth guide rails 644 are arranged in an arc shape.

[0099] In order to clean the impurities floating to the upper surface of the liquid in the storage tank 32, a cleaning mechanism for detecting and automatically cleaning the impurities in the storage tank 32 is arranged on the outer wall of the storage tank. In this embodiment, the cleaning mechanism is not shown in the figure.

[0100] When the height of the impurities in the storage tank 32 reaches a certain value, the cleaning mechanism automatically removes the upper layer of impurities, so that the entire protection device can continuously clean the impurities on the filter screen 311, thereby continuously protecting the columnar detection end 1.

[0101] The implementation principle of the corrosion-resistant groundwater monitoring protection device according to the embodiment is as follows: the filter screen 311 can filter the impurities in the groundwater entering the water storage tank 31 through the water inlet 21 of the outer protection cylinder 3, the driving mechanism 5 can drive the intermittent washing mechanism 4 to rotate, and when the intermittent washing mechanism 4 is opposite to the filter screen 311, the driving mechanism 5 drives the intermittent washing mechanism 4 to automatically wash the 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.

[0102] At the same time, the drainage mechanism 6 can draw negative pressure on the upper cavity of the impurity storage bin 32, so that more groundwater from the water passage 31 enters the impurity storage bin 32, thereby draining the impurities diffused into the water passage 31 and draining most of the impurities into the impurity storage bin 32.

[0103] When the intermittent flushing mechanism 4 is not directly opposite to the filter screen 311, the intermittent flushing mechanism 4 is automatically pressurized to realize the automatic flushing action of the filter screen 311 when it is directly opposite to the filter screen 311 again, and the drainage mechanism 6 generates a large number of bubbles in the impurity storage bin 32 during this process, which can drive the impurities to float up and finally transfer a large amount of impurities to the upper surface of the groundwater in the impurity storage bin 32 away from the filter screen 311, thereby realizing the automatic collection of the cleaned impurities and reducing the possibility of re-blocking of the filter screen 311 by the cleaned impurities.

[0104] The above are optional embodiments of the present application, and do not limit the protection scope of the present application, so: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A corrosion-resistant groundwater monitoring and protection device, submerged in groundwater, used to protect a columnar detection end (1), characterized in that: It includes an inner protective sleeve (2) and an outer protective sleeve (3) sleeved outside the inner protective sleeve (2). The inner protective sleeve (2) is sealed and sleeved on the end of the columnar detection end (1). The outer protective sleeve (3) is sealed to both the end of the inner protective sleeve (2) and the end of the columnar detection end (1). The inner casing (2) and the outer casing (3) have water inlets (21) corresponding to the openings of the columnar detection end (1), and each water inlet (21) is connected to the opening of the columnar detection end (1). The outer casing (3) is hollow inside. The inner cavity of the outer casing (3) includes a water passage chamber (31) that communicates with the water inlet on the outer casing (3) and a miscellaneous storage chamber (32) that communicates with the top of the water passage chamber (31). A filter screen (311) is provided on the side wall of the water passage chamber (31) near the inner casing (2). The filter screen (311) is directly opposite the water inlet (21) on the outer casing (3). A water storage chamber is provided between the inner wall of the outer casing (3) and the outer wall of the inner casing (2). An intermittent rinsing mechanism (4) is provided in the water storage chamber to rinse the impurities on the filter screen (311) into the water chamber (31). A drive mechanism (5) is provided on the columnar detection end (1) to drive the intermittent rinsing mechanism (4) to move. The top of the inner cavity of the storage bin (32) has a cavity that is not submerged by groundwater. The storage bin (32) is provided with a drainage mechanism (6) for regulating the air pressure in the cavity at the top of the storage bin (32). When the intermittent rinsing mechanism (4) rotates to face the filter screen (311), the intermittent rinsing mechanism (4) sprays high-speed water onto the filter screen (311), and the diversion mechanism (6) draws negative pressure into the upper cavity of the storage bin (32). When the intermittent rinsing mechanism (4) rotates from facing the filter screen (311) to not facing the filter screen (311), the diversion mechanism (6) generates a large number of bubbles at the bottom of the storage bin (32). The drive mechanism (5) includes a rotating drum (51), a drive member (52), a gear (53), and an external gear ring (54). The rotating drum (51) is rotatably and sealingly fitted onto the cylindrical detection end (1), and its end is connected to the intermittent flushing mechanism (4) for transmission. The drive member (52) is mounted on the cylindrical detection end (1). The gear (53) is coaxially fixed on the output end of the drive member (52). The external gear ring (54) is fitted onto the rotating drum (51) and meshes with the gear (53). The intermittent flushing mechanism (4) includes a flushing chamber (41), a flushing nozzle (42), a first piston plate (43), a first pushing assembly (44), a water inlet pipe (45), and a valve opening assembly (46). The end of the rotating drum (51) is provided with a connecting plate that is fixedly connected to the flushing chamber (41). Multiple flushing nozzles (42) are provided and are spaced apart on the side of the flushing chamber (41) near the filter screen (311). The first piston plate (43) is slidably sealed in the flushing chamber (41) and divides the space in the flushing chamber (41) into two non-communicating chambers. The first pushing component (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 embedded in the inner wall of the flushing chamber (41), and one end is connected to the chamber on the side of the first piston plate (43) near the filter screen (311), and the other end is connected to the cavity between the outer protective cylinder (3) and the inner protective cylinder (2). The water inlet pipe (45) is provided with a first one-way valve for controlling the flow of water into the flushing chamber (41). The valve opening assembly (46) is disposed in the space of the first piston plate (43) near the filter screen (311) to intercept the water entering the flushing chamber (41) in the space of the first piston plate (43) near the filter screen (311), or to make the water entering the flushing chamber (41) sprayed out by each of the flushing nozzles (42). The flow-guiding mechanism (6) includes a piston cylinder (61), a second piston plate (62), a bubble generating assembly (63), and a third pushing assembly (64). The piston cylinder (61) is fixed to the outer wall of the storage bin (32) of the outer protective cylinder (3) and communicates with the upper cavity of the storage bin (32). The second piston plate (62) is slidably and sealingly disposed inside the piston cylinder (61). The second piston plate (62) divides the cavity of the piston cylinder (61) into two non-communicating chambers. The bubble generating component (63) is disposed in the inner wall of the outer protective cylinder (3), and part of it is connected to the side chamber of the second piston plate (62) near the inner cavity of the storage bin (32), and the other part is connected to the inner cavity of the storage bin (32) near the bottom; The third pushing component (64) is used to drive the second piston plate (62) to adjust the air pressure in the upper cavity of the storage bin (32).

2. The corrosion-resistant groundwater monitoring and protection device according to claim 1, 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).

3. The corrosion-resistant groundwater monitoring and protection device according to claim 1, characterized in that: The inlet of the water inlet pipe (45) is connected to the gap between the flushing chamber (41) and the inner protective cylinder (2).

4. The corrosion-resistant groundwater monitoring and protection device according to claim 1, characterized in that: The first pushing 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). The inner sleeve (2) has an opening groove on its side wall along the circumferential direction 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 to form a ring, and the opening 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). The first guide rail (443) is provided with two sections. 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. 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 protective cylinder (2) gradually increases from the end near 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).

5. The corrosion-resistant groundwater monitoring and protection device according to claim 1, characterized in that: 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 intervals. The valve opening plate (462) is slidably and sealed 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 rail (465) is provided in two sets, and the two third guide rails (465) are respectively arranged opposite to the corresponding filter screen (311). The fourth guide rail (466) is provided in two sets, 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 protective cylinder (3) gradually increases from the side closer to the fourth guide rail (466) to the side further away from the fourth guide rail (466), and the distance reaches its maximum at the middle position of the third guide rail (465). Both fourth guide rails (466) are arranged in an arc shape.

6. The corrosion-resistant groundwater monitoring and protection device according to claim 1, characterized in that: The bubble generating assembly (63) includes a flow equalization chamber (631) and bubble nozzles (632). The flow equalization chamber (631) is arranged around the inner cavity of the storage chamber (32). Multiple bubble nozzles (632) are provided and are all connected to the inner cavity of the flow equalization chamber (631). An air guiding channel (633) is provided in the inner wall of the outer casing (3). One end of the air guiding channel (633) is connected to the chamber of the second piston plate (62) near the storage chamber (32), and the other end is connected to the flow equalization chamber (631). The piston cylinder (61) is provided with a second one-way valve at one end near 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. The gas guide channel (633) is provided with a third one-way valve for allowing gas in the piston cylinder (61) to enter the flow equalization bin (631) in one direction.

7. The corrosion-resistant groundwater monitoring and protection device according to claim 1, characterized in that: The third pushing 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). A fixing plate (7) is fitted and fixed on the outer wall of the rotating drum (51). Both sides of the fixing plate (7) are provided with a fifth guide rail (643) and a sixth guide rail (644). Two sets of fifth guide rails (643) are provided on one side of the fixing plate (7). The two fifth guide rails (643) are respectively directly opposite the corresponding flushing chamber (41) in the vertical direction. Two sets of sixth guide rails (644) are provided. 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 fixing plate (7) gradually increases from the side edge closer to the sixth guide rail (644) to the side edge further away from the sixth guide rail (644), and the distance reaches its maximum at the middle position of the fifth guide rail (643). Both sixth guide rails (644) are arranged in an arc shape.

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