Anti-blocking geothermal tail water recharge device and method

Abstract

The present application relates to geothermal well technical field, disclose a kind of anti-blocking geothermal tail water recharge device and method, in which, a kind of anti-blocking geothermal tail water recharge device, including recharge well, filter well, liftable recharge cage, liftable pollution storage box and expandable dirt scraping mechanism;Dirt scraping mechanism is composed of center plate and arc plate, forms pollution storage cover after expansion, and the outer wall of pollution storage cover is equipped with second slope scraper and arc scraper;Drive assembly controls dirt scraping mechanism expansion / contraction and pollution storage box lifting, and recharge cage resets through first extension spring, and when resetting, it is scraped off particle by first slope scraper;By setting liftable dirt scraping and reset type particle cleaning, without shutdown disassembly, by lifting, it can be completed multi-zone pollution control, simultaneously cooperate with the anti-jamming structure of the guide wheel of first guide groove and second guide groove, prevent particle from accumulating in pipe column, so that the long-term stability of the inner diameter of pipe column, solve the problem of slow cleaning, particle accumulation of traditional device.

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:

[0005] Low cleaning efficiency of sediment: 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 sediment. 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 targeted and efficient pollution removal 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 shutdowns.

[0006] Easy entry of formation particles into the pipe string: The particle size and composition of the particles 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 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

[0007] In view of the problems of low cleaning efficiency of sediment 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.

[0008] The application provides an anti-blocking geothermal tail water recharging device, which aims to: through the setting of a recharging mechanism and a driving mechanism, sediment can be quickly cleaned, the recharging well and the pipeline are prevented from being blocked, tail water is smoothly recharged, recharging pressure is prevented from being abnormal, the device is stably operated, the adverse effects on the surrounding geological environment are reduced, the granular substances in the stratum are prevented from entering the recharging pipe column, the granular substances are prevented from being accumulated in the pipe column, the inner diameter of the pipe column is kept stable, the recharging water flow resistance is reduced, the damage of the granular substances to the equipment components in the pipe column is reduced, the equipment failure rate is reduced, the recharging efficiency is improved, the maintenance cost is saved, and the service life of the equipment is prolonged.

[0009] The technical scheme of the application is as follows: an anti-blocking geothermal tail water recharging device, which comprises a recharging well and a filter well fixedly connected to the bottom of the recharging well, and further comprises a recharging mechanism arranged in the recharging well, wherein the recharging mechanism comprises a drainage assembly and a decontamination assembly, the drainage assembly comprises a recharging cage arranged in the recharging well and capable of being lifted, and the decontamination assembly comprises a decontamination box slidably connected to the inner wall of the recharging cage and capable of being lifted.

[0010] The top of the decontamination box is provided with an expandable / contractible decontamination scraping mechanism, the decontamination scraping mechanism comprises a center plate and an arc-shaped plate capable of being expanded relative to the center plate, and the arc-shaped plate and the center plate form a decontamination cover after being expanded; when the decontamination scraping mechanism is expanded and the decontamination box is lifted, the deposits on the inner wall of the recharging cage and the recharging well can be scraped off.

[0011] Further, the outer wall of the decontamination 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 which are uniformly distributed; the bottom of the decontamination box is rotatably connected with a plurality of guide wheels, and the guide wheels are respectively located directly below the arc-shaped scraping plates.

[0012] Further, a plurality of second guide grooves are formed in the inner wall of the recharging cage, and the second guide grooves are rotatably connected with the guide wheels; the outer wall of the recharging cage is fixedly connected with a first slope scraping plate, and a plurality of drainage grooves are formed in the inner wall of the recharging cage.

[0013] By adopting the above scheme, the geothermal tail water is impacted on the recharging cage under the action of gravity through the setting of the drainage assembly and the decontamination assembly; the impact force of the tail water makes the recharging cage slide downward; the originally blocked drainage grooves are exposed, the geothermal tail water is discharged into the filter well through the drainage grooves, and the preliminary process of tail water recharging is completed; when the sediment needs to be cleaned, the arc-shaped plate is expanded and combined with the center plate into a decontamination cover through the driving of the driving assembly, the decontamination box is pulled up, the second slope scraping plate on the decontamination cover scrapes off the deposited impurities on the corresponding inner wall of the recharging cage and the pipeline assembly, and the arc-shaped scraping plate on the decontamination cover scrapes off the deposited impurities on the corresponding inner wall of the second guide groove and the pipeline assembly, and the scraped off deposited impurities fall on the decontamination cover and move upward together with the decontamination box.

[0014] 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.

[0015] 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.

[0016] 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 that the impurities are prevented from being accumulated at the sliding groove and the normal sliding of the recharging cage is ensured; and the rolling walking of the guide wheels along the first guide grooves and the second guide grooves can prevent the pollution storage box from being stuck in the recharging pipe

[0017] 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.

[0018] 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 the pollution storage cover.

[0019] 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 platform, and a plurality of rolling balls are rollingly connected between the rotating frame and the platform.

[0020] Further, the top of the platform is provided with a sliding sealing door, and the sliding sealing door is located 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.

[0021] Adopting the above scheme, when the mud needs to be cleaned, 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 next recharge and cleaning are prepared.

[0022] In another aspect of the present application, a use method of the anti-blocking geothermal tail water recharge device is provided, which comprises the following steps:

[0023] Step one: pouring the filtered geothermal tail water into the recharge well;

[0024] Step two: the geothermal tail water passes through the gravity impact recharge cage, so that the recharge cage slides downward and drains water;

[0025] Step three: the residual mud in the geothermal tail water falls to the bottom and falls into the dirt storage box;

[0026] Step four: when the pouring of the geothermal tail water is stopped, the recharge cage slides upward and resets;

[0027] Step five: operating the arc-shaped plate to expand and combine with the center plate into a dirt storage cover;

[0028] 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;

[0029] 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.

[0030] Adopting the above scheme, through the setting of 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 can be 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 maintained 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.

[0031] The beneficial effects of the present application are:

[0032] By adopting the technical means of deployable dirt scraping mechanism and dirt storage box lifting, the arc-shaped plate is deployed to form a dirt storage cover, cooperating with the second slope scraper and the arc-shaped scraper, the dirt storage box is lifted to simultaneously scrape off the deposits in multiple positions, thereby solving the problem of disassembly and cleaning of the traditional device, achieving the effect of completing multi-area dirt cleaning through lifting without stopping and disassembling, greatly improving the recharge efficiency and reducing the maintenance cost.

[0033] By adopting the technical means of liftable recharge cage and first slope scraper, when the recharge cage is lowered, water is guided through the drainage groove, and when it is reset, the particles in the sliding groove are scraped off through the first slope scraper, and at the same time, the anti-jamming structure of the first guide groove and the second guide groove is cooperated with the guide wheel, thereby preventing the particles from accumulating in the pipe column, making the inner diameter of the pipe column stable for a long time, reducing the water flow resistance, reducing the wear of equipment parts, and achieving the effect of prolonging the service life.

[0034] By adopting the technical means of second telescopic spring driving arc-shaped plate expansion, the arc-shaped plate forms a sealed dirt storage cover with the center plate after expansion, thereby avoiding the falling of dirt back to the pipe column during cleaning, achieving the effect of improving the thoroughness of cleaning and reducing the risk of secondary pollution. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 It is a schematic diagram of the overall installation position of the present application;

[0036] Figure 2 It is a schematic diagram of the overall structure of the present application;

[0037] Figure 3 It is a schematic diagram of the structure at the driving assembly of the present application;

[0038] Figure 4 It is a schematic diagram of the structure at the rotating frame of the present application;

[0039] Figure 5 It is a schematic diagram of the structure at the winch of the present application;

[0040] Figure 6 It is a schematic diagram of the structure at the pipe assembly of the present application;

[0041] Figure 7 It is a schematic diagram of the structure at the drainage assembly of the present application;

[0042] Figure 8 It is a schematic diagram of the structure at the drainage groove of the present application;

[0043] Figure 9 It is a schematic diagram of the structure at the dirt removal assembly of the present application;

[0044] Figure 10 It is a schematic diagram of the structure at the telescopic assembly of the present application;

[0045] Figure 11The opening and closing state of the storage cover is shown in the schematic view.

[0046] In the figure:

[0047] 1, ground; 2, recharge well; 3, filter well; 4, tail water pipe; 5, recharge mechanism; 51, sliding sealing door; 52, pipe 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, pollution discharge assembly; 551, water guide block; 552, arc-shaped plate; 553, center plate; 554, storage box; 555, guide wheel; 556, arc-shaped scraper; 557, second inclined scraper; 6, driving assembly; 61, alternating twist steel wire rope; 62, rotating frame; 63, rotating rod; 64, ball bearing; 65, winch. DETAILED DESCRIPTION

[0048] To make the above-mentioned objectives, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0049] Embodiment 1, refer to Figure 1 - Figure 11 For the first embodiment of the present application, a backflow prevention type geothermal tail water recharge device is provided, which comprises a recharge well 2 and a filter well 3 fixedly connected to the bottom of the recharge well 2, and further comprises a recharge mechanism 5 arranged inside the recharge well 2, the recharge mechanism 5 comprising a drainage assembly 53 and a pollution discharge assembly 55, the drainage assembly 53 comprising a recharge cage 533 arranged inside the recharge well 2 and being liftable, and the pollution discharge assembly 55 comprising a storage box 554 slidably connected to the inner wall of the recharge cage 533 and being liftable.

[0050] Refer to Figure 7 - Figure 11 The top of the storage box 554 is provided with an expandable / contractible pollution scraping mechanism, which comprises a center plate 553 and an arc-shaped plate 552 expandable relative to the center plate 553, and the arc-shaped plate 552 and the center plate 553 form a storage cover after expansion. When the pollution scraping mechanism is expanded and the storage box 554 is lifted, the deposits on the inner wall of the recharge cage 533 and the recharge well 2 can be scraped off.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] 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 rotating force is applied to the connecting block 541 from outside, 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 inner wall of the recharge cage 533 and the recharge well 2.

[0058] 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, away from the connecting block 541, of the interactive twisted steel wire rope 61 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 top of the platform 1 is provided with the 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 the 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.

[0059] 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.

[0060] 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:

[0061] Step one: the filtered geothermal tail water is poured into the recharge well 2;

[0062] Step two: the geothermal tail water passes through the gravity impact recharge cage 533, so that the recharge cage 533 slides downward and drains water;

[0063] Step three: the residual mud in the geothermal tail water falls to the bottom and falls into the dirt storage box 554;

[0064] Step four: when the pouring of the geothermal tail water is stopped, the recharge cage 533 slides upward and resets;

[0065] Step five: the arc-shaped plate 552 is unfolded and combined with the center plate 553 to form the dirt storage cover;

[0066] Step six: the dirt storage box 554 is pulled up, and the deposited impurities on the inner wall of the recharge cage 533 and the recharge well 2 are scraped off;

[0067] 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.

[0068] The working principle of the present application is as follows:

[0069] ​When in operation, the filtered geothermal tail water is filled into the inside of the backfill pipe 521 through the tail water pipe 4; the filled geothermal tail water impacts the backfill cage 533 under the action of gravity, the backfill cage 533 is slidably connected in the inside of the positioning block 524 through the lifting rod 532, the impact force of the tail water makes the backfill cage 533 slide downward; the originally blocked drainage groove 536 is exposed, and the geothermal tail water is discharged into the filter well 3 through the drainage groove 536, thereby completing the preliminary backfill process of the tail water.

[0070] In the process of discharging the tail water into the filter well 3, the residual mud in the geothermal tail water falls into the dirt storage box 554 located on the inner wall of the backfill cage 533 due to the action of gravity, the water guide block 551 on the top of the dirt storage box 554 plays a guiding and blocking role, so that the mud can accurately fall into the dirt storage box 554.

[0071] When the filling of the geothermal tail water is stopped, the backfill cage 533 slides upward and resets under the elastic force of the first extension spring 531, in the resetting process, the first inclined scraper 535 fixed on the outer wall of the backfill cage 533 scrapes the deposited impurities on the sliding groove 523 on the inner wall of the backfill pipe 521, so as to prevent the impurities from accumulating at the sliding groove 523 and ensure the normal sliding of the backfill cage 533.

[0072] When it is necessary to clean the mud, the operator operates the rotating rod 63, the rotating rod 63 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 makes the double steel wire rope 542 relax the single 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 the dirt storage cover.

[0073] Then the dirt storage box 554 is pulled up by driving the winch 65, the second inclined scraper 557 on the dirt storage cover scrapes the deposited impurities on the inner walls of the backfill cage 533 and the backfill pipe 521, at the same time, the arc-shaped scraper 556 on the dirt 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 dirt storage cover and move upward together with the dirt storage box 554; and the guide wheel 555 rolls along the first guide groove 522 and the second guide groove 534 to avoid the dirt storage box 554 from being stuck in the backfill pipe 521.

[0074] Finally, the sliding sealing door 51 is opened, the dirt storage box 554 is taken out of the backfill pipe 521, the mud in the dirt storage box 554 is removed, and then the dirt storage box 554 is put back, and the arc-shaped plate 552 is retracted into the water guide block 551, so as to prepare for the next backfill and cleaning.

[0075] It should be noted that the above examples are only used to illustrate the technical solutions of the present application but not limit the present application. Although the present application is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalently replaced, 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); 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; 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); 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.

2. The anti-blocking geothermal tail water recharge device according to claim 1, characterized in that: 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).

3. The anti-blocking geothermal tail water 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).

4. The anti-blocking geothermal tail water recharge device according to claim 3, characterized in that: 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).

5. The anti-blocking geothermal tailwater reinjection device of claim 4, 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).

6. 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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