Anti-blocking geothermal tail water recharging device and method

Abstract

The invention relates to the technical field of geothermal wells, and discloses an anti-blocking geothermal tail water recharge device and method.The anti-blocking geothermal tail water recharge device comprises a recharge well, a water filter well, a liftable recharge cage, a liftable dirt storage box and an expandable dirt scraping mechanism; the dirt scraping mechanism is composed of a center plate and an arc-shaped plate and forms a dirt storage cover after being unfolded, and a second slope scraping plate and an arc-shaped scraping plate are arranged on the outer wall of the dirt storage cover; the driving assembly controls the dirt scraping mechanism to unfold / contract and the dirt storage box to lift, the recharge cage is reset through the first telescopic spring, and particles are scraped through the first slope scraping plate during resetting; by arranging lifting type dirt scraping and reset type particle cleaning, shutdown disassembly is not needed, multi-area dirt cleaning can be completed through lifting, meanwhile, the guide wheel anti-blocking structures of the first guide groove and the second guide groove are matched, particles are prevented from being accumulated in the tubular column, the inner diameter of the tubular column is made to be stable for a long time, and the problems that a traditional device is slow in cleaning and particles are accumulated are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of geothermal water wells, in particular to a backflow device and method for preventing clogging of geothermal tail water. BACKGROUND

[0002] The backflow device for preventing clogging of geothermal tail water is a key equipment of a geothermal energy utilization system, which is used for re-injecting geothermal tail water after heat exchange into the ground to realize recycling of geothermal energy and protection of geological environment.

[0003] In the patent with the patent number CN113559586A, a backflow device for geothermal tail water is disclosed, which relates to the technical field of geothermal water wells. The device comprises a filter, a water pump and a backflow pipe connected in sequence. The filter comprises a filter cavity, a filter bag cage is arranged in the filter cavity, and a filter bag is arranged outside the filter bag cage. A sealing cover is arranged at the top of the filter cavity, a tail water inlet pipe is arranged on the side wall of the filter cavity, and the filter bag cage is located below the tail water inlet pipe. A plurality of clean water outlet pipes are arranged on the side wall of the filter cavity in a circumferential direction, a water collecting cavity is connected to the ends of the clean water outlet pipes, a total water outlet pipe is arranged on the water collecting cavity, and the total water outlet pipe is connected to the inlet of the water pump. The axis of the clean water outlet pipe is not intersected with the axis of the filter cavity, and the axis of the clean water outlet pipe is located in the middle of the filter bag cage. A turbine is arranged in the backflow pipe. The device forms a cyclone in the filter cavity through the clean water outlet pipe to prevent loss of impurities. The turbine is arranged in the backflow pipe, and the turbine causes the water to generate a centrifugal effect to impact the pipe wall in a radial direction to prevent small impurities from clogging the backflow pipe.

[0004] The existing technology has the following defects: Low cleaning efficiency of deposited mud: The geothermal tail water contains complex impurities such as silt and minerals, which are easy to adhere to the inner wall of the backflow well and the pipeline to form deposits. The existing device (such as the backflow device for geothermal tail water disclosed in the patent with the patent number CN113559586A) relies on filter bag filtration and turbine centrifugal anti-clogging, lacks a targeted and efficient pollution discharge structure, and needs to disassemble the equipment or stop the machine for dredging during cleaning, which is time-consuming and labor-intensive, resulting in a significant decrease in backflow efficiency and an increase in operating costs due to frequent stoppages.

[0005] Easy entry of formation particles into the pipe string: The particle size and composition of the particulate matter (such as fine sand and rock debris) in the formation environment are complex, and the filtering structure of the existing device cannot completely block the particles. The particles will gradually accumulate in the backflow pipe string, causing the inner diameter of the pipe string to decrease and the water flow resistance to increase, which not only further reduces the backflow efficiency, but also wears out the internal components of the pipe string, shortens the service life of the equipment, and even causes abnormal backflow pressure and damages the surrounding geological environment. SUMMARY

[0006] In view of the problems of low cleaning efficiency of deposited mud and easy entry of formation particles into the pipe string in the existing technology, a backflow device and method for preventing clogging of geothermal tail water are proposed.

[0007] The application provides an anti-blocking geothermal tail water recharging device.

[0008] The technical scheme of the application is as follows: an anti-blocking geothermal tail water recharging device, comprising a recharging well and a filter well fixedly connected to the bottom of the recharging well, and further comprising a recharging mechanism arranged in the recharging well, wherein the recharging mechanism comprises a water drainage assembly and a sludge drainage assembly, the water drainage assembly comprises a recharging cage arranged in the recharging well and capable of ascending and descending, and the sludge drainage assembly comprises a sludge storage box slidably connected to the inner wall of the recharging cage and capable of ascending and descending. The top of the sludge storage box is provided with an expandable / contractible sludge scraping mechanism, the sludge scraping mechanism comprises a center plate and an arc-shaped plate capable of expanding relative to the center plate, and the arc-shaped plate and the center plate form a sludge storage cover after expansion.

[0009] Further, the outer wall of the sludge storage cover is fixedly connected with a second slope scraping plate, and the outer wall of the second slope scraping plate is fixedly connected with a plurality of arc-shaped scraping plates uniformly distributed.

[0010] Further, a plurality of second guide grooves are formed in the inner wall of the recharging cage and are in rolling connection with the guide wheels, and the outer wall of the recharging cage is fixedly connected with a first slope scraping plate, and a plurality of water drainage grooves are formed in the inner wall of the recharging cage.

[0011] By arranging the water drainage assembly and the sludge drainage assembly, the geothermal tail water is impacted by the recharging cage under the action of gravity, and the impact force of the tail water makes the recharging cage slide downward; the originally blocked water drainage grooves are exposed, and the geothermal tail water is discharged into the filter well through the water drainage grooves, thereby completing the preliminary recharging process of the tail water; when the sludge needs to be cleaned, the arc-shaped plate is expanded and combined with the center plate into a sludge storage cover by the driving assembly, the sludge storage box is pulled up, the second slope scraping plate on the sludge storage cover scrapes the deposited impurities on the corresponding inner wall of the recharging cage and the pipeline assembly, and the arc-shaped scraping plate on the sludge storage cover scrapes the deposited impurities on the second guide groove and the corresponding inner wall of the pipeline assembly, and the scraped deposited impurities fall on the sludge storage cover and move upward together with the sludge storage box.

[0012] Further, the recharging mechanism further comprises a pipeline assembly, the pipeline assembly comprises a plurality of positioning blocks fixedly connected to the inner wall of the recharging well, the inner wall of each of the plurality of positioning blocks is slidably connected with a lifting rod, and the recharging cage is slidably connected with the positioning blocks through the plurality of lifting rods; a first extension spring is fixedly connected between the top of the lifting rod and the inner wall of the positioning block, and is used to drive the recharging cage to reset.

[0013] Further, the recharging well further comprises a recharging pipe fixedly connected between the positioning blocks; a plurality of first guide grooves and a sliding groove are formed in the inner wall of the recharging pipe, the first guide grooves are communicated with the second guide grooves, and the sliding groove is slidably connected with the outer wall of the recharging cage.

[0014] By adopting the above scheme, the recharging cage is slidably connected in the positioning blocks through the lifting rods, and the impact force of the tail water makes the recharging cage slide downward; when the tail water is stopped from being recharged into the ground, the recharging cage slides upward to reset under the elastic force of the first extension spring, and in the resetting process, the first slope scraper fixed to the outer wall of the recharging cage scrapes off the deposited impurities on the sliding groove of the inner wall of the recharging pipe, so as to prevent the impurities from being accumulated in the sliding groove and ensure the normal sliding of the recharging cage; and the rolling movement of the guide wheels along the first guide grooves and the second guide grooves can avoid the storage box from being stuck in the recharging pipe Further, the top of the center plate is fixedly connected with a water guide block, and the arc-shaped plate is slidably connected with the inner wall of the water guide block; the water guide block is provided with an extension assembly, the extension assembly comprises a second extension spring fixedly connected between the arc-shaped plate and the water guide block, the inner wall of the arc-shaped plate is fixedly connected with a single steel wire rope, the single steel wire rope is wound into a double steel wire rope after penetrating through the water guide block, and the top of the double steel wire rope is fixedly connected with a connecting block.

[0015] By adopting the above scheme, when it is necessary to clean the mud, the rotating force is transmitted to the connecting block by operating the driving assembly, the rotation of the connecting block makes the double steel wire rope relax the single steel wire rope, and under the action of the second extension spring, the arc-shaped plate is unfolded and combined with the center plate into a storage cover.

[0016] Further, the driving assembly comprises an interactive twisted steel wire rope fixedly connected to the top of the connecting block, one end of the interactive twisted steel wire rope away from the connecting block is fixedly connected with a winch, the outer wall of the winch is fixedly connected with a rotating frame, and the outer wall of the rotating frame is fixedly connected with a plurality of rotating rods; the rotating frame is rotatably connected with the inner wall of the ground, and a plurality of rolling balls are rollingly connected between the rotating frame and the ground.

[0017] Further, the top of the ground is provided with a sliding sealing door above the recharging pipe; the inner wall of the recharging pipe is communicated with a tail water pipe, and the outer wall of the tail water pipe is slidably connected with the inner wall of the sliding sealing door.

[0018] Adopting the above scheme, when it is needed to clean the mud, the operator operates the rotating rod, the rotating rod drives the rotating frame fixedly connected therewith to rotate, the rotating frame drives the winch to rotate, when the winch rotates, the interactive twisted steel wire rope transmits the rotating force to the connecting block; then the winch drives the dirt storage box to be pulled up; finally, the sliding sealing door is opened, the dirt storage box is taken out from the recharge pipe, the mud in the dirt storage box is removed and then the dirt storage box is put back, and the arc-shaped plate is retracted into the water guide block, so that the recharge and cleaning are prepared for the next time.

[0019] Another aspect of the present application provides a use method of the anti-blocking geothermal tail water recharge device, which comprises the following steps: Step one: pouring the filtered geothermal tail water into the recharge well; Step two: the geothermal tail water impacts the recharge cage by gravity, so that the recharge cage slides downward and drains water; Step three: the residual mud in the geothermal tail water falls to the bottom and falls into the dirt storage box; Step four: when the pouring of the geothermal tail water is stopped, the recharge cage slides upward and resets; Step five: operating the arc-shaped plate to expand and combine with the center plate into a dirt storage cover; Step six: pulling up the dirt storage box to scrape off the deposited impurities on the inner wall of the recharge cage and the recharge well; Step seven: after the mud in the dirt storage box is removed, the dirt storage box is put back into the recharge cage, and the arc-shaped plate is retracted.

[0020] Adopting the above scheme, through the recharge mechanism and the driving mechanism, the deposited mud can be quickly cleaned, the recharge well and the pipeline are prevented from being blocked, the tail water is smoothly recharged, the abnormal recharge pressure is avoided, the stable operation of the device is maintained, the adverse effects on the surrounding geological environment are reduced, the particulate matter in the formation is prevented from entering the recharge pipe column, the particles are prevented from accumulating in the pipe column, the inner diameter of the pipe column is kept stable, the water flow resistance is reduced, the damage of the particulate matter to the equipment components in the pipe column is reduced, the equipment failure rate is reduced, the recharge efficiency is improved, the maintenance cost is saved, and the service life of the equipment is prolonged.

[0021] The beneficial effects of the present application are: By adopting the technology of the expandable dirt scraping mechanism and the dirt storage box lifting, the arc-shaped plate expands to form a dirt storage cover, the second slope scraper and the arc-shaped scraper are used to scrape off the deposits in multiple positions when the dirt storage box is lifted, so that the problem that the traditional device needs to be disassembled and cleaned is solved, the effect that the device does not need to be disassembled and cleaned and the multiple area cleaning can be completed by lifting is achieved, the recharge efficiency is greatly improved, and the maintenance cost is reduced.

[0022] By adopting the technical means of the liftable recharge cage and the first slope scraper, the recharge cage is guided by the drainage groove when descending, and the particles in the sliding groove are scraped by the first slope scraper when resetting, and the anti-jamming structure of the guide wheels of the first guide groove and the second guide groove is matched, so that the particles are prevented from accumulating in the pipe column, the inner diameter of the pipe column is long-term stable, the water flow resistance is reduced, the equipment component wear is reduced, and the service life is prolonged.

[0023] By adopting the technical means that the second telescopic spring drives the arc-shaped plate to expand, the arc-shaped plate forms a sealed sewage storage cover with the center plate after expansion, so that the mud falling back into the pipe column during sewage cleaning is avoided, the thoroughness of sewage cleaning is improved, and the risk of secondary pollution is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the overall installation position schematic view of the present application; Figure 2 It is the overall structure schematic view of the present application; Figure 3 It is the structure schematic view of the driving assembly of the present application; Figure 4 It is the structure schematic view of the rotating frame of the present application; Figure 5 It is the structure schematic view of the winch of the present application; Figure 6 It is the structure schematic view of the pipe assembly of the present application; Figure 7 It is the structure schematic view of the drainage assembly of the present application; Figure 8 It is the structure schematic view of the drainage groove of the present application; Figure 9 It is the structure schematic view of the sewage discharge assembly of the present application; Figure 10 It is the structure schematic view of the telescopic assembly of the present application; Figure 11 It is the opening and closing state schematic view of the sewage storage cover of the present application.

[0025] In the figure: 1, platform; 2, recharge well; 3, filter well; 4, tail water pipe; 5, recharge mechanism; 51, sliding sealing door; 52, pipeline assembly; 521, recharge pipe; 522, first guide groove; 523, sliding groove; 524, positioning block; 53, drainage assembly; 531, first extension spring; 532, lifting rod; 533, recharge cage; 534, second guide groove; 535, first inclined scraper; 536, drainage groove; 54, extension assembly; 541, connecting block; 542, double-strand steel wire rope; 543, single-strand steel wire rope; 544, second extension spring; 55, sewage discharge assembly; 551, water guide block; 552, arc-shaped plate; 553, center plate; 554, sewage storage box; 555, guide wheel; 556, arc-shaped scraper; 557, second inclined scraper; 6, driving assembly; 61, interactive twisted steel wire rope; 62, rotating frame; 63, rotating rod; 64, ball bearing; 65, winch. DETAILED DESCRIPTION

[0026] In order to make the above objectives, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0027] Example 1, refer to Figure 1 - Figure 11 , the first embodiment of the present application provides a kind of anti-blocking geothermal tail water recharge device, including recharge well 2 and the filter well 3 of fixed connection in recharge well 2 bottom, it further includes the recharge mechanism 5 being arranged in recharge well 2 interior, recharge mechanism 5 includes drainage assembly 53 and sewage discharge assembly 55, drainage assembly 53 includes the recharge cage 533 of being arranged in recharge well 2 interior liftable, sewage discharge assembly 55 includes the sewage storage box 554 of being liftable in the inner wall of recharge cage 533 slidingly connected.

[0028] refer to Figure 7 - Figure 11 , the top of sewage storage box 554 is equipped with the scraping mechanism of being expandable / shrinkable, scraping mechanism includes center plate 553 and the arc-shaped plate 552 of being expandable relative to center plate 553, arc-shaped plate 552 is expanded and is formed with center plate 553 to form sewage storage cover;When scraping mechanism is expanded and lifts sewage storage box 554, the sediment of recharge cage 533 and the inner wall of recharge well 2 can be scraped off.

[0029] Specifically, the filter well 3 can preliminarily filter the geothermal water flow before entering the recharge well 2 to remove larger impurities; the recharge cage 533 can adjust its position according to the actual recharge condition to optimize the drainage effect and ensure that the geothermal tail water can enter the recharge well 2 uniformly and stably; the sediment storage box 554 can flexibly collect and clean the sediments generated during the recharge process; when a certain amount of sediments accumulates on the inner wall of the recharge well 2 and the recharge cage 533, the scraping mechanism will be deployed, at this time, the arc-shaped plate 552 will gradually expand outward relative to the center plate 553 until a complete sediment storage cover is formed, and the edge thereof can tightly fit the inner wall of the recharge cage 533 and the recharge well 2; during the ascending process of the sediment storage box 554, the deployed scraping mechanism can scrape off the sediments attached to the inner wall of the recharge cage 533 and the recharge well 2 and collect the scraped sediments into the sediment storage box 554, thereby realizing effective cleaning of the sediments on the inner wall of the recharge cage 533 and the recharge well 2, preventing excessive accumulation of sediments from causing device blockage, and ensuring stable operation of the recharge device.

[0030] With reference to Figure 7 - Figure 11 The outer wall of the sediment storage cover is fixedly connected with a second inclined scraper 557, and the outer wall of the second inclined scraper 557 is fixedly connected with a plurality of arc-shaped scrapers 556 uniformly distributed; the bottom of the sediment storage box 554 is rotatably connected with a plurality of guide wheels 555, and the guide wheels 555 are respectively located directly below the arc-shaped scrapers 556; a plurality of second guide grooves 534 are formed in the inner wall of the recharge cage 533, and the second guide grooves 534 are rollingly connected with the guide wheels 555; the outer wall of the recharge cage 533 is fixedly connected with a first inclined scraper 535, and a plurality of drainage grooves 536 are formed in the inner wall of the recharge cage 533.

[0031] Specifically, when the sediment storage cover rises with the sediment storage box 554, the second inclined scraper 557 can be in contact with the sediments on the inner wall of the recharge cage 533 and the recharge well 2 at an inclined angle, and compared with vertical scraping, this inclined design can more effectively strip the sediments from the inner wall, avoiding the sediments remaining due to uneven scraping force; the guide wheels 555 are located directly below the arc-shaped scrapers 556, so that the ascending and descending process of the sediment storage box 554 on the inner wall of the recharge cage 533 is more stable and smooth, and at the same time, the guide wheels 555 also play a role in positioning and guiding, ensuring that the sediment storage box 554 can accurately ascend and descend along the predetermined path.

[0032] With reference to Figure 4 - Figure 7, the recharging mechanism 5 further comprises a pipeline assembly 52, the pipeline assembly 52 comprises a plurality of positioning blocks 524 fixedly connected to the inner wall of the recharge well 2, the inner wall of the plurality of positioning blocks 524 is respectively slidably connected with a plurality of lifting rods 532, a recharge cage 533 is slidably connected with the positioning blocks 524 through the plurality of lifting rods 532; a first extension spring 531 is fixedly connected between the top of the lifting rod 532 and the inner wall of the positioning block 524, for driving the recharge cage 533 to reset; the recharge well 2 further comprises a recharge pipe 521 fixedly connected between the positioning blocks 524; a plurality of first guide grooves 522 and a sliding groove 523 are formed in the inner wall of the recharge pipe 521, the first guide grooves 522 are communicated with the second guide grooves 534, and the sliding groove 523 is slidably connected with the outer wall of the recharge cage 533.

[0033] Specifically, the recharge cage 533 is slidably connected with the positioning blocks 524 through the plurality of lifting rods 532, so that the recharge cage 533 can stably move up and down in the recharge well 2 according to actual recharge requirements and sediment cleaning needs; the positioning blocks 524 not only provide support and guidance for the lifting of the recharge cage 533, but also fix the recharge pipe 521, so as to ensure that the recharge pipe 521 does not shake or displace during the recharge process, and the stability of the tail water conveying is ensured.

[0034] With reference to Figure 4 - Figure 9 , the top of the center plate 553 is fixedly connected with a water guide block 551, and the arc-shaped plate 552 is slidably connected to the inner wall of the water guide block 551; the water guide block 551 is internally provided with an extension assembly 54, the extension assembly 54 comprises a second extension spring 544 fixedly connected between the arc-shaped plate 552 and the water guide block 551, the inner wall of the arc-shaped plate 552 is fixedly connected with a single steel wire rope 543, the single steel wire rope 543 is wound into a double steel wire rope 542 after penetrating through the water guide block 551, and the top of the double steel wire rope 542 is fixedly connected with a connecting block 541.

[0035] Specifically, when the geothermal tail water is recharged, the water guide block 551 can reasonably guide the water flow direction, so that the tail water is more evenly distributed in the recharge well 2 and the recharge cage 533, avoiding that the concentrated water flow causes excessive impact on the local part, which is conducive to improving the recharge effect; when the external rotating force acts on the connecting block 541, the double steel wire rope 542 and the single steel wire rope 543 will move, thereby driving the arc-shaped plate 552 to slide in the inner wall of the water guide block 551, so as to realize the function that the dirt scraping mechanism adjusts the working state according to the actual situation, and effectively completes the cleaning work of the sediments in the recharge cage 533 and the inner wall of the recharge well 2.

[0036] With reference to Figure 3 - Figure 9It also includes the platform 1 and the drive assembly 6 arranged inside the platform 1, the drive assembly 6 includes the interactive twisted steel wire rope 61 fixedly connected to the top of the connecting block 541, the end of the interactive twisted steel wire rope 61 away from the connecting block 541 is fixedly connected with the winch 65, the outer wall of the winch 65 is fixedly connected with the rotating frame 62, and the outer wall of the rotating frame 62 is fixedly connected with a plurality of rotating rods 63; the rotating frame 62 is rotationally connected with the inner wall of the platform 1, and a plurality of rolling balls 64 are rollingly connected between the rotating frame 62 and the platform 1; the sliding sealing door 51 is installed at the top of the platform 1 and located above the recharge pipe 521; the tail water pipe 4 is communicated with the inner wall of the recharge pipe 521, and the outer wall of the tail water pipe 4 is slidingly connected with the inner wall of the sliding sealing door 51.

[0037] Specifically, the platform 1 serves as the basic support structure of the whole device and provides a stable mounting platform for various components; the interactive twisted steel wire rope 61 has good flexibility and strength and can directly transmit the rotating force.

[0038] Embodiment 2, refer to Figure 1 Figure 11 The second embodiment of the present application provides a use method of the anti-blocking geothermal tail water recharge device, adopts an anti-blocking geothermal tail water recharge device, and comprises the following steps: Step one: filter the geothermal tail water and pour it into the recharge well 2; Step two: the geothermal tail water impacts the recharge cage 533 by gravity, so that the recharge cage 533 slides downward and drains water; Step three: the residual mud in the geothermal tail water falls to the bottom and falls into the dirt storage box 554; Step four: when the pouring of the geothermal tail water is stopped, the recharge cage 533 slides upward and resets; Step five: the arc-shaped plate 552 is unfolded and combined with the center plate 553 to form a dirt storage cover; Step six: the dirt storage box 554 is pulled up to scrape off the deposited impurities on the inner wall of the recharge cage 533 and the recharge well 2; Step seven: after the mud in the dirt storage box 554 is removed, the mud is put back into the recharge cage 533, and the arc-shaped plate 552 is retracted.

[0039] The working principle of the present application is as follows: When in operation, the filtered geothermal tail water is poured into the recharge pipe 521 through the tail water pipe 4; the poured geothermal tail water impacts the recharge cage 533 under the action of gravity, the recharge cage 533 is slidingly connected inside the positioning block 524 through the lifting rod 532, and the impact force of the tail water makes the recharge cage 533 slide downward; the originally blocked drainage groove 536 is exposed, the geothermal tail water is drained into the filter well 3 through the drainage groove 536, and the preliminary process of the tail water recharge is completed.

[0040] ​In the process of the tail water into the filter well 3, the residual mud in the geothermal tail water is settled to the bottom due to gravity and falls into the storage box 554 located in the inner wall of the recharge cage 533. The water guide block 551 at the top of the storage box 554 plays a guiding and blocking role, so that the mud can accurately fall into the storage box 554.

[0041] When the recharge of the geothermal tail water is stopped, the recharge cage 533 is reset upward under the elastic force of the first extension spring 531. In the resetting process, the first slope scraper 535 fixed to the outer wall of the recharge cage 533 scrapes the deposited impurities on the chute 523 of the inner wall of the recharge pipe 521, preventing the impurities from accumulating at the chute 523 and ensuring the normal sliding of the recharge cage 533.

[0042] When it is necessary to clean the mud, the operator operates the rotating rod 63, which drives the rotating frame 62 fixedly connected thereto to rotate. The rotating frame 62 drives the winch 65 to rotate. When the winch 65 rotates, the alternating twisted steel wire rope 61 transmits the rotating force to the connecting block 541. The rotation of the connecting block 541 causes the double-stranded steel wire rope 542 to relax the single-stranded steel wire rope 543. Under the action of the second extension spring 544, the arc-shaped plate 552 expands and merges with the center plate 553 into a storage cover.

[0043] Then the storage box 554 is pulled up by the driving winch 65. The second slope scraper 557 on the storage cover scrapes the deposited impurities on the inner walls of the recharge cage 533 and the recharge pipe 521. At the same time, the arc-shaped scraper 556 on the storage cover scrapes the deposited impurities on the inner walls of the second guide groove 534 and the first guide groove 522. The scraped deposited impurities fall on the storage cover and move upward together with the storage box 554. The guide wheel 555 rolls along the first guide groove 522 and the second guide groove 534 to avoid the storage box 554 being stuck in the recharge pipe 521.

[0044] Finally, the sliding sealing door 51 is opened, the storage box 554 is taken out of the recharge pipe 521, the mud in the storage box 554 is removed, and then the storage box 554 is put back in and the arc-shaped plate 552 is retracted into the water guide block 551, so as to prepare for the next recharge and cleaning.

[0045] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, which should be covered in the scope of the claims of the present application.

Claims

1. A device for preventing clogging of geothermal tail water reinjection, comprising a reinjection well (2) and a filter well (3) fixedly connected to the bottom of the reinjection well (2), characterized in that: Also include the setting in the recharge well (2) inside recharge mechanism (5), the recharge mechanism (5) includes drainage assembly (53) and sewage assembly (55), the drainage assembly (53) includes the recharge cage (533) that sets up inside the recharge well (2) liftable, the sewage assembly (55) includes the sewage box (554) that liftable sliding connection is in the inner wall of recharge cage (533); The sewage box (554) top is equipped with the scraper mechanism that can expand / contract, the scraper mechanism includes the center plate (553) and the arc-shaped plate (552) that can be expanded relative to the center plate (553), the arc-shaped plate (552) is expanded and is formed with the center plate (553) sewage cover;When the scraper mechanism expands and lifts the sewage box (554), can scrape the sediment in the recharge cage (533) and the inner wall of recharge well (2).

2. The anti-blocking geothermal tail water recharge device according to claim 1, characterized in that: The outer wall of the sewage cover is fixedly connected with the second slope scraper (557), and the outer wall of the second slope scraper (557) is fixedly connected with a plurality of arc-shaped scrapers (556) uniformly distributed;The bottom of the sewage box (554) is rotatably connected with a plurality of guide wheels (555), and the guide wheels (555) are located below the arc-shaped scrapers (556) respectively.

3. The anti-blocking geothermal tail water recharge device according to claim 2, characterized in that: The inner wall of the recharge cage (533) is provided with a plurality of second guide grooves (534), and the second guide grooves (534) are in rolling connection with the guide wheels (555);The outer wall of the recharge cage (533) is fixedly connected with the first slope scraper (535), and the inner wall of the recharge cage (533) is provided with a plurality of drainage grooves (536).

4. The anti-blocking geothermal tail water recharge device according to claim 1, characterized in that: The recharge mechanism (5) further includes a pipeline assembly (52), the pipeline assembly (52) includes a plurality of positioning blocks (524) fixedly connected to the inner wall of the recharge well (2), the inner walls of the plurality of positioning blocks (524) are slidingly connected with a plurality of lifting rods (532), and the recharge cage (533) is slidingly connected with the positioning blocks (524) through the plurality of lifting rods (532);The first extension spring (531) is fixedly connected between the top of the lifting rod (532) and the inner wall of the positioning block (524), for driving the recharge cage (533) to reset.

5. The anti-blocking geothermal tailwater reinjection device of claim 4, wherein: The recharge well (2) is further provided with a recharge pipe (521) inside, and the recharge pipe (521) is fixedly connected between the positioning blocks (524);The inner wall of the recharge pipe (521) is provided with a plurality of first guide grooves (522) and sliding grooves (523), the first guide grooves (522) are communicated with the second guide grooves (534), and the sliding grooves (523) are slidingly connected with the outer wall of the recharge cage (533).

6. The anti-blocking geothermal tailwater recharge device according to claim 1, characterized in that: The center plate (553) top fixedly connected with water guide block (551), arc-shaped plate (552) slidingly connected to the inner wall of water guide block (551); The inside of the water guide block (551) is provided with a telescopic assembly (54), the telescopic assembly (54) includes a second telescopic spring (544) fixedly connected between the arc-shaped plate (552) and the water guide block (551), the inner wall of the arc-shaped plate (552) is fixedly connected with a single steel wire rope (543), the single steel wire rope (543) is wound into a double steel wire rope (542) after penetrating the water guide block (551), and the top of the double steel wire rope (542) is fixedly connected with a connecting block (541).

7. The anti-clogging geothermal tailwater reinjection device of claim 6, wherein: It also includes a platform (1) and a driving assembly (6) arranged inside the platform (1), the driving assembly (6) includes an interactive twisted steel wire rope (61) fixedly connected to the top of the connecting block (541), one end of the interactive twisted steel wire rope (61) away from the connecting block (541) is fixedly connected with a winch (65), the outer wall of the winch (65) is fixedly connected with a rotating frame (62), and the outer wall of the rotating frame (62) is fixedly connected with a plurality of rotating rods (63); The rotating frame (62) is rotatably connected with the inner wall of the platform (1), and a plurality of rolling balls (64) are rollingly connected between the rotating frame (62) and the platform (1).

8. The anti-blocking geothermal tailwater reinjection device of claim 7, wherein: The top of the platform (1) is provided with a sliding sealing door (51), and the sliding sealing door (51) is located above the recharge pipe (521); The inner wall of the recharge pipe (521) is communicated with a tail water pipe (4), and the outer wall of the tail water pipe (4) is slidingly connected with the inner wall of the sliding sealing door (51).

9. The use of the anti-clogging geothermal tail water reinjection device according to claim 1, characterized in that, The method comprises the following steps: Step one: pour filtered geothermal tail water into the recharge well (2); Step two: the geothermal tail water impacts the recharge cage (533) by gravity, so that the recharge cage (533) slides downward and drains water; Step three: the residual mud in the geothermal tail water falls to the bottom of the storage box (554); Step four: when the geothermal tail water is stopped, the recharge cage (533) slides upward to reset; Step five: operate the arc-shaped plate (552) to expand and combine with the center plate (553) into a storage cover; Step six: pull up the storage box (554) to scrape off the deposited impurities on the inner wall of the recharge cage (533) and the recharge well (2); Step seven: after removing the mud in the storage box (554), put it back into the recharge cage (533), and retract the arc-shaped plate (552).

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