A device for preventing plugging of a recharging well

Abstract

The invention relates to the technical field of recharge wells, and discloses a recharge well anti-clogging device, comprising a seepage well channel arranged inside a foundation, a seepage well pipe being nested inside the seepage well channel, the bottom of the seepage well pipe being closed, and a plurality of infiltration water holes penetrating through the side wall of the seepage well pipe being opened around the seepage well pipe, and the characteristics of the invention are that a secondary water filter pipe is nested inside the seepage well pipe, a primary water filter pipe is nested inside the secondary water filter pipe, a gap exists between the side wall of the primary water filter pipe and the side wall of the secondary water filter pipe, the primary water filter pipe is a stainless steel pipe, and primary filter holes are arranged in the middle and bottom of the stainless steel pipe. When the stainless steel pipe is blocked or cleared regularly, the invention seals the top of the stainless steel pipe through a rubber water cavity, and then manually cleans the dirt accumulated inside the clearing device through an operation port, and after cleaning, closes the sealing door, and resets the clearing device, and there is no need to stop water supply during the whole process.

Description

Technical Field

[0001] The invention relates to the technical field of reinjection wells, and in particular to an anti-clogging device for reinjection wells. Background Art

[0002] Geothermal energy is a pollution-free, renewable, clean energy. The geothermal tail water is currently mostly filtered by ground filtration devices. The filtered water quality has problems such as scaling and corrosion along the way, which makes it difficult to guarantee the water quality before entering the reinjection layer, because the reinjection well is easily blocked by impurities.

[0003] For example, the Chinese invention patent with application number: 202311596162.1 discloses a device for preventing the recharging well from being blocked in a geothermal operation system, including a foundation and a well pipe opened in the middle of the foundation, a wellbore and a filter inner tube are arranged inside the well pipe, the wellbore is close to the inner wall of the well pipe, a spiral is arranged in the middle of the wellbore and the filter inner tube, a driving mechanism is arranged inside the filter inner tube, the bottom end of the driving mechanism is fixedly connected to the spiral, the middle section of the driving mechanism is sleeved with a filter plate and a crushing mechanism, a well cover is installed at the top of the well pipe, and a recovery mechanism is connected to the bottom end of the well cover. The spiral and the screw are driven to rotate simultaneously by a rotating ring, the screw drives the filter plate to move upward along the vertical groove, and at the same time, the screw drives the crushing mechanism to rotate upward on the surface of the filter plate, and the garbage and debris falling on the filter plate are crushed, and at the same time, the crushed debris is squeezed out onto the spiral through the slag discharge hole, and during the rotation of the spiral, the debris squeezed out from the inside of the wellbore is rolled up and discharged from the top of the wellbore into the inside of the recovery mechanism.

[0004] Although the above scheme collects the debris at the top of the device, it is necessary to stop the water injection when the debris is to be thoroughly cleaned, and then manually dismantle and clean it, which affects the timeliness of the recharging project. Summary of the invention

[0005] The present application aims to provide a reinjection well anti-clogging device to solve the problems raised in the above-mentioned background technology.

[0006] The embodiment of the present invention provides a recharge well anti-clogging device, comprising a seepage well channel arranged inside a foundation, a seepage well pipe being nested in the seepage well channel, the bottom of the seepage well pipe being closed and a plurality of infiltration water holes penetrating its side wall are provided around the seepage well pipe, a secondary water filter pipe is nested in the seepage well pipe, a primary water filter pipe is nested in the secondary water filter pipe, a gap exists between the side wall of the primary water filter pipe and the side wall of the secondary water filter pipe, the primary water filter pipe is a stainless steel pipe, primary filter holes are provided in the middle and bottom of the body of the stainless steel pipe, the top and bottom ends of the stainless steel pipe are both closed, a plurality of operation ports are provided on the top surface of the stainless steel pipe, a driving motor is also fixedly installed on the top surface of the stainless steel pipe, a lead screw is rotatably installed between the top and bottom ends of the stainless steel pipe and a limit rod is fixedly installed, a lead screw nut is threadedly sleeved on the lead screw, a sliding hole slidably sleeved on the limit rod is provided on the lead screw nut, and a clearing device is provided on the lead screw nut;

[0007] The top of the stainless steel pipe is fixedly connected to multiple water inlet pipes extending to the outside through the gap, and the tops of all the water inlet pipes are fixedly connected to the same water inlet well cavity, which is fixedly connected or movably connected to the external water inlet.

[0008] As a preferred solution of the present invention: the blockage clearing device includes a ring plate fixedly mounted on the middle part of the lead screw nut, a first annular knife cylinder is rotatably mounted on the outer edge of the ring plate, a second annular guide cylinder is fixedly mounted on the top of the lead screw nut, a plurality of hollow water columns are fixedly mounted on the ring plate, a rubber water chamber is fixedly mounted on the bottom of the lead screw nut, and a water outlet hole is opened on the side wall of the rubber water chamber.

[0009] As a preferred solution of the present invention: a rubber pad for closing the water outlet is provided on the top of the circumference of the stainless steel pipe.

[0010] As a preferred solution of the present invention: the interval between at least two adjacent water inlet pipes is greater than 20 cm.

[0011] As a preferred solution of the present invention: a sealing door is installed on each of the operating ports.

[0012] As a preferred solution of the present invention: the filtration diameter of the primary water filter pipe is smaller than the filtration diameter of the secondary water filter pipe.

[0013] As a preferred solution of the present invention: the side walls of the first annular knife cylinder and the second annular guide cylinder are both hollow structures, and the bottom of the second annular guide cylinder is also a hollow structure.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] First aspect: the present invention takes into full account the fragility of the second filtering device by setting up a secondary filtering, and reduces the damage to the cleaning of the second filtering device by cleaning the first filtering device;

[0016] The second aspect: when the stainless steel pipe is blocked or needs to be cleared regularly, the present invention seals the top of the stainless steel pipe through the rubber water cavity. Since there is no filter hole at the top of the stainless steel pipe, the sealing door can be opened at this time, and then the dirt accumulated inside the clearing device can be cleaned manually through the operation port. After cleaning, the sealing door is closed and the clearing device can be reset. There is no need to stop water supply during the whole process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the internal structure of the primary water filter pipe of the present invention;

[0020] Figure 3 For the present invention Figure 2 A partial enlarged view of middle A;

[0021] Figure 4 It is a schematic diagram of the internal structure of the blockage clearing device of the present invention when it slides to the highest point.

[0022] In the figure: 1. foundation; 2. seepage well; 3. seepage well pipe; 4. seepage water hole; 5. primary water filter pipe; 6. secondary water filter pipe; 7. operation port; 8. drive motor; 9. lead screw; 10. limit rod; 11. lead screw nut; 12. sliding hole; 13. water inlet pipe; 14. water inlet well cavity; 15. ring plate; 16. first annular knife cylinder; 17. second annular guide cylinder; 18. hollow water column; 19. rubber water cavity; 20. water outlet hole; 21. rubber pad. DETAILED DESCRIPTION

[0023] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0025] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] like Figures 1 to 4 As shown, the present invention provides a recharge well anti-clogging device, including a seepage well 2 arranged inside a foundation 1, a seepage well pipe 3 is nested in the seepage well 2, the bottom of the seepage well pipe 3 is closed and a plurality of infiltration holes 4 are opened around the seepage well pipe 3 and penetrate the side wall thereof, a secondary water filter pipe 6 is nested in the seepage well pipe 3, a primary water filter pipe 5 is nested in the secondary water filter pipe 6, a gap exists between the side wall of the primary water filter pipe 5 and the side wall of the secondary water filter pipe 6, the primary water filter pipe 5 is a stainless steel pipe, and the stainless steel pipe A primary filter hole is arranged in the middle and bottom of the body of the pipe, the top and bottom ends of the stainless steel pipe are closed, a plurality of operation ports 7 are opened on the top surface of the stainless steel pipe, a driving motor 8 is also fixedly installed on the top surface of the stainless steel pipe, a lead screw 9 and a limit rod 10 are rotatably installed between the top and bottom ends of the stainless steel pipe, a lead screw nut 11 is threadedly sleeved on the lead screw nut 11, a sliding hole 12 which is slidably sleeved on the limit rod 10 is arranged on the lead screw nut 11, and a clearing device is arranged on the lead screw nut 11.

[0029] The seepage well pipe 3 is generally an ordinary concrete pipe, which has a strong water permeability. The seepage well pipe 3 is loose and porous. The permeable water hole 4 can refer to the hole on it. Of course, the seepage well pipe 3 can be further opened with permeable water holes 4 to enhance the permeability of the seepage well pipe 3. The seepage well 2 is generally not a specific structure. After the drilling rig drills a hole on the foundation 1, the seepage well pipe 3 is placed, and the gap between the seepage well pipe 3 and the foundation 1 drill hole 1 is filled with a fast permeable layer formed by materials such as gravel. Of course, the seepage well pipe 3 can also be It is made of steel pipe and other materials. Since the permeability of steel pipe is poor, holes must be drilled on the steel pipe to form permeable water holes 4. The primary water filter pipe 5 is generally composed of a multi-layer mesh structure stacked and wrapped. It has a relatively fine filtering ability but its surface is relatively fragile. It is easy to be damaged by directly using a scraper to clean the surface. The stainless steel pipe is directly vented to filter out some larger scale or gravel. Since the stainless steel pipe is used for primary filtration, the dirt adhered to its surface is relatively firm, and the stainless steel pipe is not easy to be damaged and is suitable for being cleaned by a scraper.

[0030] In the present invention, the lead screw 9 and the lead screw nut 11 are threadedly matched, and then the lead screw nut 11 is aligned by using the limit rod 10. When the drive motor 8 is started, the output shaft of the drive motor 8 drives the lead screw 9 to rotate through the coupling, and both ends of the lead screw 9 are installed in the stainless steel pipe through bearings. Note that the bottom end of the lead screw 9 does not need to penetrate the bottom of the stainless steel pipe, but the top needs to be penetrated, so as to prevent water from seeping out of the stainless steel pipe. The probability of seepage from the top is not high and can also be solved by the dynamic sealing structure of the prior art.

[0031] The top of the stainless steel pipe is fixedly connected with multiple water inlet pipes 13 extending to the outside through gaps. The tops of all the water inlet pipes 13 are fixedly connected with the same water inlet well cavity 14, and the water inlet well cavity 14 is fixedly connected or movably connected to the external water inlet. In this way, the water inlet well cavity 14 is separated from the top of the stainless steel pipe by the water inlet pipe 13, which facilitates the subsequent cleaning of scale blockages from the top of the stainless steel pipe.

[0032] In the present invention, the blockage clearing device includes a ring plate 15 fixedly sleeved on the middle part of the screw nut 11, a first annular knife cylinder 16 is rotatably sleeved on the outer edge of the ring plate 15, a second annular guide cylinder 17 is fixedly installed on the top of the screw nut 11, a plurality of hollow water columns 18 are fixedly installed on the ring plate 15, a rubber water chamber 19 is fixedly installed on the bottom of the screw nut 11, and a water outlet hole 20 is opened on the side wall of the rubber water chamber 19.

[0033] The first annular knife cylinder 16 is composed of an annular part rotatably mounted on the ring plate 15 and a knife column mounted on the outer edge of the annular part. The blade of the knife column is inclined and contacts the inner wall of the stainless steel pipe. The annular part is stably sleeved on the ring plate 15 through a groove. In this way, the first annular knife cylinder 16 rotates so that the blade of the knife column scrapes the inner wall of the stainless steel pipe in an annular manner like a scraper in the prior art. Then, under the synchronous action of the lead screw nut 11 and the lead screw 9, the first annular knife cylinder 16 rises slowly, thereby comprehensively scraping the inner wall from bottom to top.

[0034] The dirt scraped by the inclined surface of the guide column's blade enters the first annular knife cylinder 16. Since the second annular guide cylinder 17 is fixed to the screw nut 11, the first annular knife cylinder 16 and the second annular guide cylinder 17 will rotate relative to each other, so that the dirt and debris are crushed and approached to the center position of the second annular guide cylinder 17 under the rotating cutting of the first annular knife cylinder 16 and the second annular guide cylinder 17.

[0035] In order to prevent the water flow from significantly hindering the sliding of the ring plate 15 when it slides upward, a hollow water column 18 is provided. The special shape of the hollow water column 18 ensures that it will not be blocked by the crushed materials inside the second annular guide cylinder 17. The re-injected water through the hollow water column 18 enters the rubber water cavity 19 and is then discharged from the water outlet 20.

[0036] There is no specific limitation on the driving method of the first annular knife cylinder 16, and it can be any driving method in the prior art. For example, a ring structure with teeth on the inner side can be welded and fixed on the top of the first annular knife cylinder 16. Since the second annular guide cylinder 17 is fixed, a waterproof motor can be installed thereon. A battery can be used or a wire can be threaded from the top of the stainless steel pipe, and then the output shaft of the motor drives the toothed annular structure through a gear; a driving gear meshing with the toothed annular structure can also be rotatably installed on the second annular guide cylinder 17, and the driving gear extends to the outside of the stainless steel pipe by connecting a retractable driving shaft.

[0037] A rubber pad 21 for closing the water outlet 20 is arranged on the top of the stainless steel pipe.

[0038] The interval between at least two adjacent water inlet pipes 13 is greater than 20 cm.

[0039] Wherein, a sealing door is installed on each operating port 7.

[0040] Among them, the filtering diameter of the primary water filtering pipe 5 is smaller than the filtering diameter of the secondary water filtering pipe 5 .

[0041] The side walls of the first annular knife cylinder 16 and the second annular guide cylinder 17 are both hollow structures, and the bottom of the second annular guide cylinder 17 is also a hollow structure.

[0042] Working principle:

[0043] The recharging water pipe is fixedly connected to the water inlet well cavity 14. At this time, the recharging water enters the water inlet pipe 13 through the water inlet well cavity 14. The bottom end of the water inlet pipe 13 penetrates into the stainless steel pipe (in the figure, the holes in the uppermost row of the stainless steel pipe are larger than the holes below, which are water inlet holes. In actual production, the rows of holes are much larger, which is inconvenient to show in this schematic diagram). Then, the recharging water enters the stainless steel pipe for primary filtration, and then passes through the secondary water filter pipe 6 for secondary filtration, and then enters the foundation 1 through the seepage well pipe 3 and the seepage well 2;

[0044] When the stainless steel pipe is blocked or needs to be cleared regularly, the drive motor 8 is started to drive the lead screw 9 to rotate. At this time, the lead screw nut 11 at the bottom moves upward. During the upward movement of the lead screw nut 11, the clearing device installed on the lead screw nut 11 will perform a circular scraping on the stainless steel pipe and crush the debris, and then store the debris in the clearing device until the clearing device slides to the top, and the water outlet 20 on the side wall of the rubber water chamber 19 is just set on the rubber pad 21 of the stainless steel pipe. At this time, the state is referenced Figure 4 The diameter of the rubber water chamber 19 is slightly larger than the inner diameter of the stainless steel pipe. At this time, the rubber water chamber 19 can close the top of the stainless steel pipe (the water inlet hole below it can flow in normally). Since there is no filter hole at the top of the stainless steel pipe, the sealing door can be opened at this time, and then the dirt accumulated inside the clearing device can be cleaned manually through the operation port 7. After cleaning, the sealing door is closed and the clearing device can be reset. There is no need to stop the water supply during the whole process.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for preventing a recharging well from being blocked, comprising a water seepage well channel (2) arranged inside a foundation (1), a water seepage well pipe (3) being nested inside the water seepage well channel (2), the bottom of the water seepage well pipe (3) being closed and a plurality of water seepage holes (4) penetrating through the side wall thereof being opened around the water seepage well pipe, characterized in that: A secondary water filter pipe (6) is nested in the seepage well pipe (3), and a primary water filter pipe (5) is nested in the secondary water filter pipe (6). A gap exists between the side wall of the primary water filter pipe (5) and the side wall of the secondary water filter pipe (6). The primary water filter pipe (5) is a stainless steel pipe. The middle and bottom of the stainless steel pipe are both provided with primary filter holes. The top and bottom ends of the stainless steel pipe are both closed. A plurality of operation ports (7) are provided on the top surface of the stainless steel pipe. A driving motor (8) is also fixedly installed on the top surface of the stainless steel pipe. A lead screw (9) and a limit rod (10) are rotatably installed between the top and bottom ends of the stainless steel pipe. A lead screw nut (11) is threadedly sleeved on the lead screw (9). The lead screw nut (11) is provided with a sliding hole (12) slidably sleeved on the limit rod (10). A clearing device is provided on the lead screw nut (11); The top of the stainless steel pipe is fixedly connected to a plurality of water inlet pipes (13) extending through the gap to the outside, and the tops of all the water inlet pipes (13) are fixedly connected to the same water inlet well (14), and the water inlet well (14) is fixedly connected or movably sleeved to the outside water inlet; The blockage clearing device comprises a ring plate (15) fixedly sleeved on the middle part of the lead screw nut (11), a first ring-shaped knife cylinder (16) rotatably sleeved on the outer edge of the ring plate (15), a second ring-shaped guide cylinder (17) fixedly mounted on the top of the lead screw nut (11), a plurality of hollow water columns (18) fixedly mounted on the ring plate (15), a rubber water chamber (19) fixedly mounted on the bottom of the lead screw nut (11), and a water outlet hole (20) opened on the side wall of the rubber water chamber (19); The diameter of the rubber water chamber (19) is slightly larger than the inner diameter of the stainless steel pipe; A rubber pad (21) for sealing the water outlet hole (20) is provided at the top of the periphery of the stainless steel pipe.

2. A reinjection well anti-clogging device according to claim 1, characterized in that: The interval between at least two adjacent water inlet pipes (13) is greater than 20 cm.

3. The anti-clogging device for a reinjection well according to claim 1, characterized in that: A sealing door is installed on each of the operating ports (7).

4. The anti-clogging device for a reinjection well according to claim 1, characterized in that: The side walls of the first annular knife cylinder (16) and the second annular guide cylinder (17) are both hollow structures, and the bottom of the second annular guide cylinder (17) is also a hollow structure.

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