CN212017036U - Prevent blockking up and extract well with self-cleaning function - Google Patents

Abstract

The utility model discloses an anti-blocking extraction well with automatic cleaning function, including extraction well body and extraction well body complex extraction system, still include the automatic cleaning system, the extraction well body includes first filter screen pipe and second filter screen pipe, and the second filter screen pipe sets up in the periphery of first filter screen pipe, and the automatic cleaning system includes first cleaning equipment and second cleaning equipment, and first cleaning equipment cooperatees with first filter screen pipe, configures into and cleans first filter screen pipe; the second cleaning device is engaged with the second screen pipe and configured to clean the second screen pipe. The utility model discloses an extract well collects the clean function of initiative and intercepts function in an organic whole passively, realizes the clean brand-new prevention jam extraction well with passive interception synergism of initiative, can overcome the tradition and extract a great deal of problems such as well easy jam, difficult washing, equipment operation unstability.

Description

Prevent blockking up and extract well with self-cleaning function

Technical Field

The utility model relates to a water treatment facilities field, in particular to prevent blockking up and extract well with self-cleaning function.

Background

Multi-phase extraction (MPE) is one of the main technologies for remedying soil and groundwater contaminated by volatile organic compounds abroad at present, and it usually achieves the effect of rapidly controlling and simultaneously remedying the contamination of soil and groundwater by simultaneously pumping soil gas, groundwater and non-aqueous phase liquid contaminants (NAPL) in the underground contaminated area to the ground for separation and treatment. Multiphase extraction (MPE) systems typically consist of 3 major process sections of multiphase extraction, multiphase separation and contaminant treatment. Compared with the traditional extraction treatment mode, the MPE has the most outstanding characteristic that the migration of pollutants from the underground environment to the above ground surface is realized by adopting a vacuum or vacuum-assisted mode.

MPE systems can be divided into single pump systems and dual pump systems. The single pump system only provides extraction power by the vacuum equipment, and the double pump system provides extraction power by the vacuum equipment and the water pump together. The single-pump system is generally simpler in structure and suitable for sites with lower permeability, and the treatment depth is generally within 10 m. The operation of the double-pump system is flexible, the repair depth can be larger than 10m, and the double-pump system has good adaptability to aquifers within a certain range.

The multi-phase extraction system is generally composed of three main process parts, namely multi-phase extraction, multi-phase separation and pollutant treatment. The multiphase extraction device is the core component of the MPE system and functions to simultaneously extract gas and liquid from the contaminated area and pump gaseous, water soluble and water insoluble liquid contaminants from the ground into the processing system above ground.

One of the difficulties encountered with the extraction tubes due to their contact with the soil is the clogging of the sand. Although existing extraction tubes have a filter system to prevent sand from entering the extraction tube, there is no other way to replace the filter system once a blockage occurs.

As shown in chinese utility model patent with application number CN201910467566.8, it discloses an extraction well system with prevent blockking up function of being applied to heterogeneous extraction of soil, and this system is including the extraction well system, the extraction well system include white pipe, fixed connection in the screen pipe of tip, fixed set up in under the white pipe the bottom of screen pipe bottom, the extraction well system is provided with outward and prevents blockking up the cavity, prevent blockking up the cavity with it has the filler to fill between the extraction well system, prevent being provided with the draw-in groove that is used for fixed extraction pipe on the base of blockking up the cavity. The extraction well is provided with a multi-layer filtering system, can delay the blocking time of an extraction pipe, can play a certain role in preventing blocking, and further solves the problems.

However, the existing extraction well is the same as the extraction well system, although the existing extraction well can play a certain role of preventing blockage, the existing extraction well can only delay the blockage time of an extraction pipe, the blockage still occurs after the existing extraction well is used for a period of time, and the blockage needs to be cleaned manually, so that the automatic cleaning cannot be realized; the back-end extraction equipment can be generally controlled automatically, but the front-end extraction well can not be automated, so that the automation requirement of the whole multiphase extraction process can not be met.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a prevent blockking up and extract well with self-cleaning function, this system has realized the function that self-cleaning extracted the well to reached the purpose of preventing blockking up, can solve one of the above-mentioned problems at least.

According to an aspect of the utility model, provide an prevent blockking up extraction well with self-cleaning function, including extraction well body and extraction well body complex extraction system, still include the self-cleaning system, the extraction well body includes first filter screen pipe and second filter screen pipe, and the second filter screen pipe sets up in the periphery of first filter screen pipe, and the self-cleaning system includes first cleaning equipment and second cleaning equipment, and first cleaning equipment cooperatees with first filter screen pipe, configures to and cleans first filter screen pipe; the second cleaning device is engaged with the second screen pipe and configured to clean the second screen pipe.

Therefore, the first filter screen pipe and the second filter screen pipe have the intercepting function, so that most soil particles can be filtered, and the anti-blocking function is achieved; and the automatic cleaning system can automatically clean soil particles attached to the first filter screen pipe and the second filter screen pipe, so that the durable anti-blocking function of the first filter screen pipe and the second filter screen pipe is ensured.

The utility model discloses an automation of well is extracted to the front end, with the automatic extraction equipment cooperation in rear end for the degree of automation of a whole set of heterogeneous extraction technology improves greatly. The utility model discloses an extract well collects the clean function of initiative and intercepts function in an organic whole passively, realizes the clean brand-new prevention jam extraction well with passive interception synergism of initiative, can overcome the tradition and extract a great deal of problems such as well easy jam, difficult washing, equipment operation unstability.

In some embodiments, the first filter screen includes a first inner screen and a first outer screen, the first outer screen is disposed at an outer periphery of the first inner screen, a first cavity is formed between the first inner screen and the first outer screen, the second filter screen includes a second inner screen and a second outer screen, the second outer screen is disposed at an outer periphery of the second inner screen, and a second cavity is formed between the second inner screen and the second outer screen. Therefore, the utility model discloses a first sieve tube and second sieve tube constitute by the sieve of inside and outside two-layer area filtration pore, have formed a multiple layer filtration system in other words, can effectively delay the time of extracting the pipe jam.

In some embodiments, the first cleaning apparatus includes a first cleaning device mounted in the first cavity and configured to clean the first inner screen and the first outer screen, and a first electrical control device coupled to the first cleaning device and configured to control movement of the first cleaning device within the first cavity. From this, first electrical control device can be controlled by the procedure, and under first electrical control device's control, first belt cleaning device can regular automatic operation, cleans first interior sieve, first outer sieve, and the clearance is piled up at first interior sieve, the soil particle of first outer sieve, prevents to block up first interior sieve, first outer sieve.

In some embodiments, the second cleaning apparatus includes a second cleaning device mounted in the second cavity and configured to clean the second inner screen and the second outer screen, and a second electrical control device coupled to the second cleaning device and configured to control movement of the second cleaning device within the second cavity. From this, second electrical control device can be controlled by the procedure, and under second electrical control device's control, second belt cleaning device can regular automatic operation, cleans the interior sieve of second, the outer sieve of second, and the clearance is piled up in the interior sieve of second, the outer soil particle of sieve of second, prevents to block up the interior sieve of second, the outer sieve of second.

In some embodiments, the anti-clogging extraction well with the automatic cleaning function further comprises a grid net cage and a plurality of layers of filler filtering layers, wherein the grid net cage is arranged in a first space surrounded by the first filter screen pipe, the outer wall of the grid net cage is tightly attached to the first inner screen, the plurality of layers of filler filtering layers are arranged in a second space formed between the first filter screen pipe and the second filter screen pipe, and the outer wall of the plurality of layers of filler filtering layers is tightly attached to the second inner screen. From this, the outer wall and the first interior sieve of grid box with a net closely laminate, and the outer wall and the second of multilayer filler filter layer closely laminate, in first belt cleaning device and second belt cleaning device work, not only can clear away the soil particle who piles up at first interior sieve, second inner screen, can also effectually clear away the soil particle who piles up at grid box with a net, multilayer filler filter layer.

In some embodiments, the automatic cleaning system further comprises a back-flushing device configured to back-flush the grating cage, the first filter screen pipe, and the plurality of filler filter layers, the back-flushing device including a back-flushing pump and a back-flushing pipe, one end of the back-flushing pipe being installed in the first space and extending through the grating cage, and the other end of the back-flushing pipe being connected to the back-flushing pump, the back-flushing pump being configured to drive the back-flushing pipe to blow clean air from the back-flushing pipe to the outer periphery. Therefore, the back washing equipment has a strong washing effect, and when the back washing equipment works, the back washing pump drives the back washing pipe to blow towards the periphery, so that soil particles in the grating net cage, the first filter screen pipe and the multi-layer filler filtering layer are washed out. The utility model discloses an automatic cleaning system comprises back flush equipment, first cleaning equipment and second cleaning equipment, by the regular automatic operation of program control, during the operation, three big equipment simultaneous operation, accumulational soil particles on the main clearance grid net cage of first cleaning equipment, accumulational soil particles in the main clearance second screen pipe of second cleaning equipment, back flush equipment carries out the back flush jetting, thoroughly strengthens the cleaning performance.

In some embodiments, the multi-layer filler filtering layer is composed of a first filtering layer, a second filtering layer and a third filtering layer which are sequentially filled in the second space from top to bottom. From this, the granule size of first filter layer, second filter layer and third filter layer is different, forms the filter layer of multiple gradation, filters soil particle step by step, and the filter effect is superior to traditional sieve and strains.

In some embodiments, the anti-clogging extraction well with self-cleaning function further comprises a reserved settling system, which is formed by a first settling section arranged at the bottom of the first space, a second settling section arranged at the bottom of the first cavity, and a third settling section arranged at the bottom of the second cavity. From this, reserve sedimentation system and can play the soil granule effect of keeping in, and then make the utility model discloses an extract well can reply to have self-cleaning to subside the relatively poor condition of hydrogeological conditions such as granule and mud mixing water among the engineering practical application.

In some embodiments, the extraction system includes a liquid phase extraction device and a gas phase extraction device, the liquid phase extraction device includes a water pump and a water pumping pipe, the gas phase extraction device includes a vacuum pump and an extraction pipe, the water pump is installed at the bottom of the grille net cage, one end of the water pumping pipe is connected with the water pump, the other end of the water pumping pipe penetrates through the grille net cage and extends out of the extraction well, the water pump is configured to drive the water pumping pipe to pump water out, one end of the extraction pipe is installed in the first space and located above the grille net cage, the other end of the extraction pipe is connected with the vacuum pump, and the vacuum pump is configured to drive the extraction pipe. Therefore, the liquid phase in the well can be extracted through the liquid phase extraction equipment, and the gas phase in the well can be extracted through the gas phase extraction equipment, so that the purpose of multi-phase extraction is achieved.

In some embodiments, the first cleaning apparatus is an automated pipe brush apparatus and the second cleaning apparatus is an ultrasonic vibratory screen apparatus. Therefore, the first cleaning equipment has a high-efficiency cleaning function, the pipeline brush can move up and down by supplying power through the first electric control device, and soil particles on the grating net cage are brushed down; the second cleaning equipment has a powerful vibrating and screening effect, and can generate ultrasonic vibration after being powered by the second electric control device, so that soil particles accumulated on the second filter screen pipe are vibrated down to form a multistage automatic cleaning module. The utility model discloses an extract well can effectively solve the tradition and extract the outstanding problem that the well blockked up of easy emergence when well face is to low permeability pollution place, extracts efficiency and improves greatly.

In some embodiments, the first filter screen, the second filter screen, the grid cage, and the plurality of filler filtration layers collectively comprise a multi-stage filtration system. The multi-stage filtering system formed by the first filtering screen pipe, the second filtering screen pipe, the grid net cage and the multi-layer filler filtering layers is the first-stage anti-blocking system of the extraction well; the automatic cleaning system consisting of the back washing equipment, the first cleaning equipment and the second cleaning equipment is a second-stage anti-blocking system of the extraction well; by set up in the first sedimentation section of first space bottom, set up in the second sedimentation section of first cavity bottom and set up in the reservation sedimentation system that the third sedimentation section of second cavity bottom constitutes jointly do the utility model discloses an extract third level of well and prevent blockking up the system. Therefore, the utility model discloses an extraction well has multistage anti-clogging function, prevents blockking up effectually, can automatic periodic cleaning in the use, can not take place blocking phenomenon, and can automated control, need not the field personnel and maintain.

The utility model has the advantages that:

the multi-stage filtering system formed by the first filtering screen pipe, the second filtering screen pipe, the grid net cage and the multi-layer filler filtering layers is the first-stage anti-blocking system of the extraction well; the automatic cleaning system consisting of the back washing equipment, the first cleaning equipment and the second cleaning equipment is a second-stage anti-blocking system of the extraction well; by set up in the first sedimentation section of first space bottom, set up in the second sedimentation section of first cavity bottom and set up in the reservation sedimentation system that the third sedimentation section of second cavity bottom constitutes jointly do the utility model discloses an extract third level of well and prevent blockking up the system. The utility model discloses an extraction well has multistage anti-clogging function, prevents blockking up effectually, can automatic periodic cleaning in the use, can not take place blocking phenomenon, and can automated control, need not the field personnel and maintain.

The utility model discloses an automation of well is extracted to the front end, with the automatic extraction equipment cooperation in rear end for the degree of automation of a whole set of heterogeneous extraction technology improves greatly. The utility model discloses an extract well collects the clean function of initiative and intercepts function in an organic whole passively, realizes the clean brand-new prevention jam extraction well with passive interception synergism of initiative, can overcome the tradition and extract a great deal of problems such as well easy jam, difficult washing, equipment operation unstability.

Drawings

Fig. 1 is a schematic structural diagram of an anti-clogging extraction well with an automatic cleaning function according to an embodiment of the present invention;

fig. 2 is a flow chart of the operation of the anti-clogging extraction well with self-cleaning function shown in fig. 1.

Reference numerals in FIGS. 1-2: 1-extracting the well body; 2-an extraction system; 3-an automatic cleaning system; 4-a grid net cage; 5-multiple filler filtration layers; 6-reserving a deposition system; 7-a first cavity; 8-a second cavity; 9-a first space; 10-a second space; 11-a first screen; 12-a second screen; 21-vapor phase extraction equipment; 22-liquid phase extraction equipment; 31-a first cleaning device; 32-a second cleaning device; 33-a backwash device; 51-a first filter layer; 52-a second filter layer; 53-a third filter layer; 61-a first deposition section; 62-a second deposition section; 63-a third deposition section; 111-a first inner screen; 112-a first outer screen; 121-a second inner screen; 122-a second outer screen; 311-a first cleaning device; 312-a first electrical control device; 321-a second cleaning device; 322-a second electrical control device; 331-backwash tube; 332-backwash pump; 211-an extraction tube; 212-vacuum pump; 221-a water pumping pipe; 222-Water Pump.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1-2 schematically show an anti-clogging extraction well with self-cleaning function according to an embodiment of the present invention.

As shown in fig. 1-2, the anti-clogging extraction well with the automatic cleaning function comprises an extraction well body 1, an extraction system 2, an automatic cleaning system 3, a grid net cage 4, a multi-layer filler filtering layer 5 and a reserved deposition system 6. The extraction system 2 is matched with the extraction well body 1 and is used for extracting the gas phase and the liquid phase in the extraction well body 1 to surface equipment for subsequent treatment.

The extraction well body 1 comprises a first filter screen 11 and a second filter screen 12. The second screen 12 is disposed on the outer periphery of the first screen 11. The first filter screen pipe 11 includes a first inner screen 111 and a first outer screen 112, the first outer screen 112 is disposed at an outer periphery of the first inner screen 111, a first cavity 7 is formed between the first inner screen 111 and the first outer screen 112, the second filter screen pipe 12 includes a second inner screen 121 and a second outer screen 122, the second outer screen 122 is disposed at an outer periphery of the second inner screen 121, and a second cavity 8 is formed between the second inner screen 121 and the second outer screen 122. Therefore, the utility model discloses a first sieve pipe 11 and the second sieve pipe 12 of straining comprises the sieve of the inside and outside two-layer area filtration pore, has formed a multiple layer filtration system in other words, can effectively postpone the time that the extraction pipe 211 blockked up. The range of the aperture of the filtering holes on the first outer screen 112, the first inner screen 111, the second outer screen 122, and the second inner screen 121 in this embodiment may be 0.1 to 2.0mm, the aperture of the filtering holes on the first outer screen 112, the first inner screen 111, the second outer screen 122, and the second inner screen 121 may be set to decrease stepwise or may be set to the same aperture, and the aperture of the filtering holes on the first outer screen 112, the first inner screen 111, the second outer screen 122, and the second inner screen 121 in this embodiment is preferably 0.3 mm.

The grid net cage 4 is arranged in a first space 9 enclosed by the first filter screen pipe 11, and the outer wall of the grid net cage 4 is tightly attached to the first inner screen 111. The multi-layer filler filtering layer 5 is arranged in the second space 10 formed between the first filter screen pipe 11 and the second filter screen pipe 12, and the outer wall of the multi-layer filler filtering layer 5 is tightly attached to the second inner screen 121.

The automatic cleaning system 3 includes a first cleaning apparatus 31, a second cleaning apparatus 32, and a backwashing apparatus 33. The first cleaning apparatus 31 is mated with the first filter screen 11 and is configured to clean the first filter screen 11. A second cleaning apparatus 32 is mated to the second screen 12 and is configured to clean the second screen 12.

The first cleaning apparatus 31 includes a first cleaning device 311 and a first electrical control device 312. The first cleaning device 311 is installed in the first cavity 7 and configured to clean the first inner screen 111 and the first outer screen 112. The first electrical control device 312 is connected to the first cleaning device 311 and configured to control the movement of the first cleaning device 311 within the first cavity 7. Accordingly, the first electric control device 312 can be controlled by a program, and the first cleaning device 311 can be automatically operated at regular intervals under the control of the first electric control device 312 to clean the first inner screen 111 and the first outer screen 112, to clean soil particles accumulated on the first inner screen 111 and the first outer screen 112, and to prevent clogging of the first inner screen 111 and the first outer screen 112. The first cleaning apparatus 31 of the present embodiment is an automated duct brush apparatus, and the first cleaning device 311 is a duct brush device that can slide up and down in the first cavity 7, and may be composed of parts such as an annular brush with bristles on both the inside and outside, a bearing sleeved on the first inner screen 111, a traveling wheel that is engaged with the first inner screen 111 and the first outer screen 112, and a motor that drives the traveling wheel to rotate. The first electrical control device 312 may be a PLC control system.

The second cleaning apparatus 32 includes a second cleaning device 321 and a second electrical control device 322. The second cleaning device 321 is installed in the second cavity 8 and configured to clean the second inner screen 121 and the second outer screen 122. The second electrical control device 322 is connected to the second cleaning device 321 and is configured to control the movement of the second cleaning device 321 within the second cavity 8. Therefore, the second electric control device 322 can be controlled by a program, and the second cleaning device 321 can automatically operate at regular intervals under the control of the second electric control device 322 to clean the second inner screen 121 and the second outer screen 122, clean soil particles accumulated on the second inner screen 121 and the second outer screen 122, and prevent the second inner screen 121 and the second outer screen 122 from being blocked. The second cleaning apparatus 32 of the present embodiment is an ultrasonic vibration sieve apparatus. The first cleaning device 311 is an ultrasonic vibration sieve device which can slide up and down in the first cavity 7, and may be composed of parts such as an annular brush with bristles on the inner side and the outer side, an ultrasonic transducer for driving the bristles to vibrate, a bearing sleeved on the second inner sieve 121, a traveling wheel matched with the second inner sieve 121 and the second outer sieve 122, and a motor for driving the traveling wheel to rotate. The second electrical control device 322 may be a PLC control system.

Because the outer wall of grid net cage 4 is closely laminated with first inner screen 111, and the outer wall of multilayer filler filter layer 5 is closely laminated with second inner screen 121, when first belt cleaning device 311 and second belt cleaning device 321 worked, not only can clear away the soil granule of piling up at first inner screen 111, second inner screen 121, can also effectually clear away the soil granule of piling up at grid net cage 4, multilayer filler filter layer 5.

The back washing device 33 is configured to back wash the grill net cage 4, the first filter screen pipe 11 and the multi-layered filler filter layer 5, the back washing device 33 includes a back washing pump 332 and a back washing pipe 331, one end of the back washing pipe 331 is installed in the first space 9 and penetrates the entire grill net cage 4, the other end is connected to the back washing pump 332, and the back washing pump 332 is configured to drive the back washing pipe 331 to blow clean air from the back washing pipe 331 to the outer periphery. Thus, the backwashing device 33 has a powerful washing function, and in operation, the backwashing pump 332 drives the backwashing pipe 331 to blow toward the outer periphery, thereby washing out soil particles in the grid cage 4, the first filter screen pipe 11, and the multi-layer filler filtration layer 5.

The utility model discloses an automatic cleaning system 3 comprises back flush equipment 33, first cleaning equipment 31 and second cleaning equipment 32, by the regular automatic operation of program control, during the operation, three big equipment moves simultaneously, and accumulational soil particles on the main clearance grid box with a net 4 of first cleaning equipment 31, accumulational soil particles in second cleaning equipment 32 main clearance second filter screen pipe 12, and back flush equipment 33 carries out the back flush jetting, thoroughly strengthens the cleaning performance. The first cleaning device 31 of the present embodiment has an efficient cleaning function, and the pipe brush moves up and down by supplying power through the first electrical control device 312, so as to brush down soil particles on the grille net cage 4; the second cleaning device 32 has a strong vibrating and screening effect, and can generate ultrasonic vibration after being electrified through the second electric control device 322, so that soil particles accumulated on the second filter screen pipe 12 are vibrated down; the backwashing equipment 33 performs backwashing and blowing to thoroughly enhance the cleaning effect. The back washing equipment 33, the first cleaning equipment 31 and the second cleaning equipment 32 jointly form a multi-stage automatic cleaning system, the outstanding problem that the traditional extraction well is easy to block when the extraction well is faced to a low-permeability polluted site can be effectively solved, and the extraction efficiency is greatly improved.

The multi-layer filler filter layer 5 is composed of a first filter layer 51, a second filter layer 52 and a third filter layer 53 which are filled in the second space 10 from top to bottom in sequence. Therefore, the first filter layer 51, the second filter layer 52 and the third filter layer 53 have different particle sizes, so that multiple graded filter layers are formed, soil particles are filtered step by step, and the filtering effect is superior to that of the traditional screening. The first filter layer 51, the second filter layer 52, and the third filter layer 53 of the present embodiment may be composed of 10 mesh, 20 mesh, and 50 mesh quartz sand in this order.

The reserved deposition system 6 of the present embodiment is composed of a first deposition section 61 disposed at the bottom of the first space 9, a second deposition section 62 disposed at the bottom of the first cavity 7, and a third deposition section 63 disposed at the bottom of the second cavity 8. From this, reserve sedimentation system 6 and can play the soil granule effect of keeping in, and then make the utility model discloses an extract well can reply to have self-cleaning to subside the relatively poor condition of hydrogeological conditions such as granule and mud mixing water among the engineering practical application.

The extraction system 2 of the present embodiment includes a liquid phase extraction device 22 and a gas phase extraction device 21. The liquid phase extraction device 22 includes a water pump 222 and a water suction pipe 221. The vapor extraction apparatus 21 includes a vacuum pump 212 and an extraction pipe 211. The water pump 222 is installed at the bottom of the grill net cage 4. One end of the water pumping pipe 221 is connected with the water pump 222, and the other end of the water pumping pipe penetrates through the grid net box 4 and extends out of the extraction well to be communicated with liquid phase processing equipment on the ground surface. The water pump 222 is configured to drive the pumping pipe 221 to pump water, and the water pump 222 of the present embodiment may be a submersible pump 222. One end of the extraction pipe 211 is installed in the first space 9 and located above the grid net cage 4, and the other end is connected to a vacuum pump 212, and the vacuum pump 212 is configured to drive the extraction pipe 211 to extract the gas in the first space 9 out of the extraction well to the gas phase processing equipment on the ground surface. Thereby, the liquid phase in the well can be extracted by the liquid phase extraction device 22 and the gas phase in the well can be extracted by the gas phase extraction device 21 for the purpose of multiphase extraction.

The first filter screen pipe 11, the second filter screen pipe 12, the grid cage 4 and the multi-layer filler filter layer 5 of the present embodiment together constitute a multi-stage filtration system.

Therefore, a multistage filtering system formed by the first filtering screen pipe 11, the second filtering screen pipe 12, the grid net cage 4 and the multi-layer filler filtering layers 5 is a first-stage anti-blocking system of the extraction well; the automatic cleaning system 3 composed of the back washing device 33, the first cleaning device 31 and the second cleaning device 32 is a second-stage anti-clogging system of the extraction well of the utility model; the third stage anti-clogging system of the extraction well comprises a first deposition section 61 arranged at the bottom of the first space 9, a second deposition section 62 arranged at the bottom of the first cavity 7, and a third deposition section 63 arranged at the bottom of the second cavity 8.

The utility model discloses an extraction well has multistage anti-clogging function, prevents blockking up effectually, can automatic periodic cleaning in the use, can not take place blocking phenomenon, and can automated control, need not the field personnel and maintain.

What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.

Claims (10)

1. The anti-blocking extraction well with the automatic cleaning function comprises an extraction well body (1) and an extraction system (2) matched with the extraction well body (1), and is characterized by further comprising an automatic cleaning system (3), wherein the extraction well body (1) comprises a first filter screen pipe (11) and a second filter screen pipe (12), the second filter screen pipe (12) is arranged on the periphery of the first filter screen pipe (11), the automatic cleaning system (3) comprises a first cleaning device (31) and a second cleaning device (32), the first cleaning device (31) is matched with the first filter screen pipe (11) and is configured to clean the first filter screen pipe (11); the second cleaning apparatus (32) is mated with the second screen (12) and configured to clean the second screen (12).

2. The anti-clogging extraction well with self-cleaning function of claim 1, characterized in that the first screen pipe (11) comprises a first inner screen (111) and a first outer screen (112), the first outer screen (112) is arranged at the periphery of the first inner screen (111), a first cavity (7) is formed between the first inner screen (111) and the first outer screen (112), the second screen pipe (12) comprises a second inner screen (121) and a second outer screen (122), the second outer screen (122) is arranged at the periphery of the second inner screen (121), and a second cavity (8) is formed between the second inner screen (121) and the second outer screen (122).

3. Anti-clogging extraction well with automatic washing function according to claim 2, characterized in that said first washing device (31) comprises a first washing means (311) and a first electrical control means (312), said first washing means (311) being mounted in the first cavity (7) and configured to clean the first inner screen (111) and the first outer screen (112), said first electrical control means (312) being connected to the first washing means (311) and configured to control the movement of the first washing means (311) inside the first cavity (7).

4. Anti-clogging extraction well with automatic washing function according to claim 3, characterized in that said second washing device (32) comprises a second washing means (321) and a second electrical control means (322), said second washing means (321) being mounted in the second cavity (8) and configured to clean the second inner screen (121) and the second outer screen (122), said second electrical control means (322) being connected to the second washing means (321) and configured to control the movement of the second washing means (321) in the second cavity (8).

5. The anti-clogging extraction well with the automatic cleaning function according to claim 4, further comprising a grid net cage (4) and a plurality of layers of filler filtering layers (5), wherein the grid net cage (4) is arranged in a first space (9) enclosed by the first screen pipe (11), the outer wall of the grid net cage (4) is tightly attached to the first inner screen (111), the plurality of layers of filler filtering layers (5) are arranged in a second space (10) formed between the first screen pipe (11) and the second screen pipe (12), and the outer wall of the plurality of layers of filler filtering layers (5) is tightly attached to the second inner screen (121).

6. Anti-clogging extraction well with automatic cleaning function according to claim 5, characterized in that said automatic cleaning system (3) further comprises a back-flushing device (33), said back-flushing device (33) being configured to back-flush the grille cage (4), the first screen pipe (11) and the multi-layer filler filter layer (5), said back-flushing device (33) comprising a back-flushing pump (332) and a back-flushing pipe (331), said back-flushing pipe (331) being mounted at one end in the first space (9) and extending through the entire grille cage (4) and at the other end being connected to the back-flushing pump (332), said back-flushing pump (332) being configured to drive the back-flushing pipe (331) to blow clean air from the back-flushing pipe (331) to the periphery.

7. The anti-clogging extraction well with self-cleaning function according to claim 5 or 6, characterized in that the multi-layer filler filter layer (5) is composed of a first filter layer (51), a second filter layer (52) and a third filter layer (53) which are filled in the second space (10) from top to bottom in sequence.

8. Anti-clogging extraction well with automatic cleaning function according to claim 5 or 6, characterized in that it further comprises a reserve sedimentation system (6), said reserve sedimentation system (6) being jointly constituted by a first sedimentation section (61) arranged at the bottom of the first space (9), a second sedimentation section (62) arranged at the bottom of the first cavity (7) and a third sedimentation section (63) arranged at the bottom of the second cavity (8).

9. The anti-clogging extraction well with automatic cleaning function of claim 5 or 6, the extraction system (2) comprises a liquid phase extraction device (22) and a gas phase extraction device (21), the liquid phase extraction device (22) comprises a water pump (222) and a water pumping pipe (221), the vapor phase extraction device (21) comprises a vacuum pump (212) and an extraction pipe (211), the water pump (222) is arranged at the bottom of the grid net box (4), one end of the water pumping pipe (221) is connected with the water pump (222), the other end of the water pumping pipe penetrates through the grid net box (4) and extends out of the extraction well, the water pump (222) is configured to drive the water pumping pipe (221) to pump out water, one end of the pumping pipe (211) is installed in the first space (9) and located above the grating net cage (4), the other end of the pumping pipe is connected with the vacuum pump (212), the vacuum pump (212) is configured to drive the extraction tube (211) to extract gas in the first space (9) out of the extraction well.

10. The anti-clogging extraction well with the automatic cleaning function according to any one of claims 1 to 6, characterized in that the first cleaning device (31) is an automatic pipeline brush device, and the second cleaning device (32) is an ultrasonic vibration sieve device.

Images