A deep well water pumping device for ground use and water pumping method thereof

Abstract

The present invention relates to the technical field of variable displacement deep well pumps, and specifically discloses a ground deep well pumping device and a pumping method thereof, wherein the ground deep well pumping device comprises a variable displacement water pump located on the ground as a driving mechanism, the variable displacement water pump input end is connected to a pumping pipe extending into the deep well, and further comprises a counterweight unit, a filter unit, an expansion unit and a traction unit. In the present invention, the pumping pipe is pulled by the counterweight unit through the cooperation of the traction unit, so that the pumping pipe is vertically extended to the bottom of the deep well, and the well water sucked upward by the variable displacement water pump on the ground is used to fill the counterweight bin, thereby ensuring the counterweight effect of the counterweight bin, so that the end of the pumping pipe extending into the bottom of the deep well is always kept in a vertical state, avoiding deformation and folding of the pumping pipe suction port or contact with the well wall, and at the same time, the well water is filtered multiple times by the first filter chamber, the second filter chamber and the counterweight bin, effectively avoiding impurities from entering the pumping pipe, thereby ensuring the smooth waterway.

Description

Technical Field

[0001] The present invention relates to the technical field of variable capacity deep well pumps, and more specifically, to a ground deep well water pumping device and a water pumping method thereof. Background Art

[0002] When extracting groundwater from deep at the bottom of a deep well, it is necessary to lower the entire pump body into the groundwater level. Considering the configuration cost of external cables and the inconvenience of operation, the existing pumping method directly places the water pump as a driving mechanism on the ground, and only places the pumping pipe inside the deep well. For example, the invention patent with patent number CN111237176A discloses a deep well pumping equipment, including a main pump located on the ground and a water suction pipe placed in the deep well. Since the water suction pipe itself has a certain flexibility and there is a lack of guidance and support for the water suction pipe inside the deep well, the water suction end of the water suction pipe is easy to contact with the inner wall of the deep well and enter impurities, or it is deformed and folded when reaching the bottom of the deep well, resulting in obstruction of the water suction end, affecting the smooth flow of the pumping pipe. Summary of the invention

[0003] In order to overcome the above technical problems, the present invention provides a ground deep well water pumping device and a water pumping method thereof.

[0004] The purpose of the present invention can be achieved through the following technical solutions:

[0005] A deep well water pumping device for ground use, comprising a variable displacement water pump located on the ground, wherein an input end of the variable displacement water pump is connected to a water pumping pipe extending into a deep well; and further comprising:

[0006] A counterweight unit is arranged at one end of the water pumping pipe away from the variable displacement water pump, and comprises a counterweight bin connected to the water pumping pipe, wherein a plurality of filters are arranged around the bottom of the counterweight bin;

[0007] The filter unit is arranged at one end of the counterweight bin away from the water pumping pipe, and comprises a cover shell detachably connected to the counterweight bin, a first filter element detachably connected to the cover shell, and a second filter element movably arranged between the cover shell and the first filter element; a first filter cavity is formed between the first filter element and the second filter element, and a second filter cavity is formed between the second filter element and the cover shell;

[0008] The expansion unit is arranged at the upper opening of the deep well and comprises a hollow mounting platform, and the pumping pipe movably passes through the hollow mounting platform;

[0009] The traction unit is arranged on the hollow mounting platform and is used for traction of the counterweight unit.

[0010] As a further solution of the present invention: the traction unit includes several groups of winding drums rotatably mounted on a hollow mounting platform, a traction motor for driving the winding drum is fixed on the hollow mounting platform, a traction cable is wound on the winding drum, a through hole for accommodating the traction cable is opened on the hollow mounting platform, and the end of the traction cable away from the winding drum is fixedly connected to the counterweight bin.

[0011] As a further solution of the present invention: the expansion support unit further comprises an expansion support ring located directly below the hollow mounting platform, a plurality of groups of main support rods are circumferentially arranged on the lower end surface of the hollow mounting platform, and a secondary support rod is hinged between the middle part of the main support rod and the expansion support ring;

[0012] One end of the main support rod is hinged to the hollow mounting platform, and one end of the main support rod away from the hollow mounting platform is provided with an expansion support plate adapted to the deep well;

[0013] A plurality of guide rods movably penetrating the hollow mounting platform are vertically fixed on the expansion ring, a limit plate is arranged on the upper end of the guide rod, an expansion spring is arranged between the limit plate and the hollow mounting platform, and the expansion spring is movably sleeved on the guide rod.

[0014] As a further solution of the present invention: the first filter element comprises a first filter cartridge, a plurality of first filter holes are circumferentially formed on the first filter cartridge, and an end cap adapted to the housing is disposed at the lower end of the first filter cartridge;

[0015] The second filter element comprises a second filter cartridge disposed between the first filter cartridge and the housing, wherein a plurality of second filter holes are circumferentially formed on the second filter cartridge, and the aperture of the second filter holes is smaller than the aperture of the first filter holes.

[0016] As a further solution of the present invention: the second filter cartridge is rotatably arranged between the first filter cartridge and the housing, and the second filter cartridge is provided with a plurality of dredging springs in contact with the first filter cartridge; a driving member for driving the second filter cartridge is provided in the middle of the counterweight bin;

[0017] A first retention bin is disposed at the bottom of the first filter chamber, and a second retention bin is disposed at the bottom of the second filter chamber.

[0018] As a further solution of the present invention: the driving member includes a driving shaft vertically mounted in the middle of the counterweight bin, and the driving shaft is used to drive the second filter cartridge; a water wheel blade is installed at one end of the driving shaft extending into the water suction pipe, and an annular water inlet connected to the water suction pipe is provided in the counterweight bin.

[0019] As a further solution of the present invention: the bottom of the housing is provided with an extrusion piece abutting against the lower end of the second filter cartridge, the upper end of the second filter cartridge is circumferentially evenly provided with a plurality of protrusions, and the lower end surface of the counterweight bin is circumferentially evenly provided with a plurality of top blocks adapted to the protrusions;

[0020] A spline sleeve is installed at the lower end of the driving shaft, and a connecting frame is arranged on the second filter cylinder. The connecting frame is axially slidably sleeved on the spline sleeve.

[0021] As a further solution of the present invention: the extrusion member includes an annular air chamber opened at the lower end of the cover shell, an elastic air bag sheet is provided at the upper opening of the annular air chamber, and the lower end of the second filter cartridge is movably embedded in the cover shell and abuts against the elastic air bag sheet.

[0022] As a further solution of the present invention: it also includes a first vacuum chamber and a second vacuum chamber, the first vacuum chamber is arranged between the variable volume water pump and the water suction pipe, a spiral blade is rotatably installed in the first vacuum chamber, a check valve is installed at one end of the water suction pipe close to the first vacuum chamber, and a drain pipe is connected to the output end of the variable volume water pump; one end of the second vacuum chamber is connected to the first vacuum chamber, and the other end is connected to the variable volume water pump, and an auxiliary pump is installed on one side of the second vacuum chamber.

[0023] The present invention also discloses a water pumping method of a deep well water pumping device for ground use, comprising the following steps:

[0024] S1. Fix the expansion unit at the upper opening of the deep well;

[0025] S2, lowering the counterweight unit vertically into the deep well through the traction unit until the pumping end of the pumping pipe is submerged in water;

[0026] S3, turn on the variable capacity water pump, the water passes through the first filter chamber, the second filter chamber and the counterweight bin in sequence and enters the pumping pipe, and pumping begins.

[0027] Beneficial effects of the present invention:

[0028] The present invention utilizes the counterweight unit to pull the water pumping pipe through the cooperation of the traction unit, so that the water pumping pipe is vertically stretched to the bottom of the deep well, and the counterweight bin is filled with the well water sucked upward, thereby ensuring the counterweight effect of the counterweight bin, so that the end of the water pumping pipe extending into the bottom of the deep well is always kept in a vertical state, avoiding deformation and folding of the water pumping port of the water pumping pipe or contact with the well wall. At the same time, the well water is filtered multiple times by the first filter chamber, the second filter chamber and the counterweight bin, effectively preventing impurities from entering the water pumping pipe, thereby ensuring smooth waterway. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will be further described below in conjunction with the accompanying drawings.

[0030] Figure 1 It is a structural schematic diagram of a ground deep well water pumping device of the present invention;

[0031] Figure 2It is a structural schematic diagram of a traction unit in a deep well pumping device for ground use of the present invention;

[0032] Figure 3 It is a structural schematic diagram of an expansion unit in a deep well water pumping device for ground use of the present invention;

[0033] Figure 4 It is a structural schematic diagram of a counterweight unit and a filter unit in a ground deep well water pumping device of the present invention;

[0034] Figure 5 It is a cross-sectional view of a counterweight unit and a filter unit in a ground deep well water pumping device of the present invention;

[0035] Figure 6 A schematic diagram of the path of water flow in a ground deep well water pumping device of the present invention;

[0036] Figure 7 It is a structural schematic diagram of a first filter cartridge in a ground deep well water pumping device of the present invention;

[0037] Figure 8 It is a structural schematic diagram of a second filter cartridge in a ground deep well water pumping device of the present invention;

[0038] Fig. 9 It is a structural schematic diagram of another perspective of the second filter cartridge in a ground deep well water pumping device of the present invention;

[0039] Fig.10 for Figure 5 Enlarged view of point A in the middle;

[0040] Fig.11 for Figure 5 Enlarged view of point B in the middle;

[0041] Fig.12 It is a cross-sectional view of a counterweight unit and a filter unit in a ground deep well pumping device of the present invention from another perspective;

[0042] Fig.13 for Fig.12 Enlarged view of point C in the middle;

[0043] Fig.14 The present invention is a schematic diagram of the structure of a first vacuum chamber and a second vacuum chamber in a deep well water pumping device for use on the ground.

[0044] In the figure:

[0045] 100, ground; 110, deep well;

[0046] 200, variable displacement water pump; 210, water pumping pipe; 220, first vacuum chamber; 230, drain pipe; 240, check valve; 250, second vacuum chamber; 260, auxiliary pump;

[0047] 300, expansion unit; 310, hollow mounting platform; 311, through hole; 320, expansion ring; 330, main support rod; 340, secondary support rod; 350, expansion plate; 360, guide rod; 370, limit plate; 380, expansion spring;

[0048] 400, traction unit; 410, winding drum; 420, traction motor; 430, traction cable;

[0049] 500, counterweight unit; 501, top block; 502, second sealing ring; 510, counterweight bin; 520, filter screen; 530, annular water inlet; 540, drive shaft; 550, water wheel blade;

[0050] 600, filter unit; 610, cover; 611, annular air chamber; 612, elastic air bag sheet; 620, first filter element; 621, first filter cartridge; 622, first filter hole; 623, end cover; 630, second filter element; 631, second filter cartridge; 632, second filter hole; 633, dredging spring; 634, raised portion; 635, first sealing ring; 640, first filter chamber; 641, first retention chamber; 650, second filter chamber; 651, second retention chamber; 660, connecting frame; 670, spline sleeve. DETAILED DESCRIPTION

[0051] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Each example may omit, replace or add various processes or components as needed. In addition, the features described relative to some examples may also be combined in other examples.

[0052] See also Figure 1 The first aspect of the present invention discloses a deep well water pumping device for ground use, comprising a variable displacement water pump 200 located on the ground 100, wherein the input end of the variable displacement water pump 200 is connected to a water pumping pipe 210 extending into the deep well 110; and further comprising an expansion unit 300, a traction unit 400, a counterweight unit 500 and a filter unit 600;

[0053] See also Figure 2 and Figure 3 The expansion unit 300 is disposed at the upper opening of the deep well 110 and includes a hollow mounting platform 310, and the pumping pipe 210 movably passes through the hollow mounting platform 310;

[0054] See also Figure 4 and Figure 5The counterweight unit 500 is disposed at one end of the water pump 210 away from the variable displacement water pump 200, and includes a counterweight bin 510 connected to the water pump 210, and a plurality of filters 520 are disposed circumferentially at the bottom of the counterweight bin 510;

[0055] The filter unit 600 is disposed at one end of the counterweight bin 510 away from the water pumping pipe 210, and includes a cover 610 detachably connected to the counterweight bin 510, a first filter element 620 detachably connected to the cover 610, and a second filter element 630 movably disposed between the cover 610 and the first filter element 620; a first filter cavity 640 is formed between the first filter element 620 and the second filter element 630, and a second filter cavity 650 is formed between the second filter element 630 and the cover 610;

[0056] The traction unit 400 is disposed on the hollow mounting platform 310 and is used to traction the counterweight unit 500 .

[0057] Specifically, see Figure 6 , place the end of the water pumping pipe 210 away from the variable displacement water pump 200 and the counterweight unit 500 in the deep well 110, then fix the hollow mounting platform 310 of the expansion unit 300 to the upper opening of the deep well 110, release the counterweight unit 500 vertically downward into the deep well 110 through the traction unit 400, use the counterweight unit 500 to pull the water pumping pipe 210 to the bottom of the deep well 110 until the counterweight unit 500 and the filter unit 600 are completely submerged in water, turn on the variable displacement water pump 200, and under the suction action of the variable displacement water pump 200, the water in the deep well 110 passes through the first filter chamber 640, the second filter chamber 650 and the counterweight chamber 510 in sequence and enters the water pumping pipe 210 (wherein Figure 6 The dashed arrows in the middle indicate the water flow path).

[0058] The above-mentioned variable displacement water pump 200 is a prior art, and the specific type is not limited, and it can be a water ring vacuum pump, a reciprocating pump or a diaphragm pump, etc.

[0059] It should be noted that the present invention, through the cooperation of the traction unit 400, utilizes the counterweight unit 500 to pull the water pumping pipe 210, so that the water pumping pipe 210 is vertically extended to the bottom of the deep well 110, and the counterweight bin 510 is filled with the well water sucked upward, thereby ensuring the counterweight effect of the counterweight bin 510, so that the end of the water pumping pipe 210 extending into the bottom of the deep well 110 always remains in a vertical state, avoiding deformation and folding of the water pumping port of the water pumping pipe 210 or contact with the well wall. At the same time, the well water is filtered through the first filter chamber 640, the second filter chamber 650 and the counterweight bin 510, effectively preventing impurities from entering the water pumping pipe 210, thereby ensuring smooth waterway.

[0060] In one embodiment, see Figure 2The traction unit 400 includes a plurality of winding drums 410 rotatably mounted on a hollow mounting platform 310, a traction motor 420 for driving the winding drums 410 is fixed on the hollow mounting platform 310, a traction cable 430 is wound on the winding drum 410, a through hole 311 for accommodating the traction cable 430 is opened on the hollow mounting platform 310, and one end of the traction cable 430 away from the winding drum 410 is fixedly connected to the counterweight bin 510;

[0061] Specifically, in the initial state, the traction cable 430 is in a reeled state. At this time, the counterweight unit 500 is located at the upper opening of the deep well 110. The reel 410 is driven to rotate by the traction motor 420 to gradually release the traction cable 430 downward. The counterweight unit 500 can pull the lower end of the pumping pipe 210 vertically downward and gradually enter the bottom of the deep well 110 under the action of its own counterweight. During the descent of the counterweight unit 500, the pumping pipe 210 on the ground 100 gradually penetrates the hollow mounting platform 310 and vertically enters the deep well 110. During the entire lowering process, the pumping pipe 210 will not contact the inner wall of the deep well 110. At the same time, the pumping pipe 210 in the deep well 110 always remains in a vertical state under the gravity traction of the counterweight unit 500, thereby ensuring the smooth flow of the entire waterway of the pumping pipe 210.

[0062] For further information, see Figure 3 Considering the stability of the expansion unit 300 and the upper opening of the deep well 110, the expansion unit 300 also includes an expansion ring 320 located directly below the hollow mounting platform 310. The lower end surface of the hollow mounting platform 310 is circumferentially provided with a plurality of main support rods 330. A secondary support rod 340 is hinged between the middle of the main support rod 330 and the expansion ring 320. One end of the main support rod 330 is hinged to the hollow mounting platform 310. The main support rod 330 is away from the middle. An expansion plate 350 adapted to the deep well 110 is provided at one end of the hollow mounting platform 310, and the expansion plate 350 may be an L-shaped structure; a plurality of guide rods 360 movably penetrating the hollow mounting platform 310 are vertically fixed on the expansion ring 320, and a limit plate 370 is provided at the upper end of the guide rod 360, and an expansion spring 380 is provided between the limit plate 370 and the hollow mounting platform 310, and the expansion spring 380 is movably sleeved on the guide rod 360;

[0063] Specifically, when the expansion unit 300 needs to be fixed at the upper opening of the deep well 110, under the elastic force of the expansion spring 380, the guide rod 360 slides upward along the hollow mounting platform 310, so that the expansion ring 320 is vertically close to the hollow mounting platform 310, and under the supporting action of the secondary support rod 340, the main support rod 330 is expanded outward until the expansion plate 350 contacts the edge of the upper opening of the deep well 110 and expands circumferentially on the inner wall of the deep well 110, thereby fixing the hollow mounting platform 310 at the center of the upper opening of the deep well 110.

[0064] It should be noted that, on the one hand, due to the elastic force of the expansion spring 380, the secondary support rod 340 can apply a radial outward thrust to the main support rod 330, thereby ensuring the expansion effect of the main support rod 330; on the other hand, due to the gravity of the counterweight unit 500 and the water pumping pipe 210, the hollow mounting platform 310 is always subjected to a vertical downward pulling action, thereby generating an inclined downward thrust on the main support rod 330, and this thrust can generate a radial outward horizontal component and a vertical downward vertical component on the expansion plate 350, wherein the horizontal component can further ensure the contact stability between the expansion plate 350 and the upper opening edge of the deep well 110, thereby preventing the entire expansion unit 300 from being separated from the deep well 110.

[0065] In yet another embodiment, see Figure 7 The first filter element 620 includes a first filter cartridge 621, a plurality of first filter holes 622 are circumferentially formed on the first filter cartridge 621, and an end cap 623 adapted to the housing 610 is disposed at the lower end of the first filter cartridge 621;

[0066] See also Figure 8 and Fig. 9 The second filter element 630 includes a second filter cartridge 631 disposed between the first filter cartridge 621 and the housing 610, and a plurality of second filter holes 632 are circumferentially formed on the second filter cartridge 631, and the aperture of the second filter hole 632 is smaller than the aperture of the first filter hole 622;

[0067] Specifically, under the suction action of the variable volume water pump 200, the well water in the deep well 110 enters the first filter chamber 640 through the first filter hole 622 of the first filter cartridge 621, and the first filter hole 622 can block large particle impurities larger than its aperture; then the water in the first filter chamber 640 enters the second filter chamber 650 through the second filter hole 632 of the second filter cartridge 631, and the second filter hole 632 can block small particle impurities larger than its aperture in the first filter chamber 640; after double filtration, the water in the second filter chamber 650 is filtered again through the filter screen 520 and then enters the counterweight bin 510, and finally enters the water suction pipe 210.

[0068] Furthermore, considering that some impurities with the same diameter as the first filter hole 622 are embedded in the first filter hole 622 under the suction effect, it is easy to cause some of the first filter holes 622 to be blocked in the long run. Fig. 9 and Fig.12The second filter cartridge 631 is rotatably disposed between the first filter cartridge 621 and the housing 610, and a plurality of dredging springs 633 in contact with the first filter cartridge 621 are disposed on the second filter cartridge 631; a driving member for driving the second filter cartridge 631 is disposed in the middle of the counterweight bin 510;

[0069] Also, see Fig.11 , a first retention bin 641 is disposed at the bottom of the first filter chamber 640, and a second retention bin 651 is disposed at the bottom of the second filter chamber 650;

[0070] During the pumping process, under the driving action of the driving member, the second filter cartridge 631 always moves circumferentially relative to the first filter cartridge 621, thereby driving the dredging spring 633 to continuously pass over the first filter hole 622 on the first filter cartridge 621. During its circumferential movement relative to the first filter cartridge 621, the end of the dredging spring 633 can be periodically inserted into the corresponding first filter hole 622, thereby dredging the impurities retained in the first filter hole 622. Subsequently, the dredging spring 633 is drawn out of the first filter hole 622 again. It has a certain elasticity. During the process of inserting and withdrawing the first filter hole 622, the dredging spring 633 will produce a periodic oscillation effect, thereby causing the first filter cartridge 621 and the second filter cartridge 631 to vibrate, further improving the dredging effect of the first filter hole 622 and the second filter hole 632, wherein the impurities dropped after dredging are gradually deposited in the first retention bin 641 at the bottom of the first filter chamber 640 and the second retention bin 651 at the bottom of the second filter chamber 650. After the pumping is completed, the deposited impurities can be cleaned up uniformly.

[0071] In order to ensure the dredging effect, the dredging spring 633 and the first filter hole 622 are staggeredly distributed. The dredging spring 633 is a conical spiral spring, and the diameter of the dredging spring 633 gradually decreases toward one end of the first filter cylinder 621;

[0072] The dredging spring 633 adopts a conical spiral structure, which has a guiding function, and can ensure that it smoothly enters the first filter hole 622 toward one end of the first filter cylinder 621 and escapes from the first filter hole 622, while avoiding the dredging spring 633 and the first filter cylinder 621 from getting stuck.

[0073] See also Fig.10 Regarding the driving mode of the second filter cartridge 631, the driving member includes a driving shaft 540 vertically rotatably mounted in the middle of the counterweight bin 510, and the driving shaft 540 is used to drive the second filter cartridge 631; a water wheel blade 550 is mounted on one end of the driving shaft 540 extending into the water pumping pipe 210, and an annular water inlet 530 connected to the water pumping pipe 210 is provided in the counterweight bin 510;

[0074] Specifically, under the suction action of the variable displacement water pump 200, the water in the counterweight bin 510 flows into the water suction pipe 210 through the annular water inlet 530. Driven by the water flow, the water wheel blades 550 rotate, thereby driving the drive shaft 540 to rotate, and then driving the second filter cartridge 631 to move.

[0075] It is worth noting that, considering the depth of the deep well 110, it is inconvenient to connect an external drive at the bottom of the deep well 110. In the present invention, the water flow during the pumping process is directly used to drive the drive shaft 540 to rotate, thereby providing driving force for the second filter cartridge 631. No external drive is required, and it is easy to use. The start and stop of the drive shaft 540 is always synchronized with the pumping operation. As long as the pumping operation starts, the drive shaft 540 automatically drives the second filter cartridge 631 to move, ensuring the timeliness and synchronization of the response to clearing the waterway.

[0076] Furthermore, considering that the movement path of the dredging spring 633 is a circumferential linear trajectory only by the circumferential rotation of the second filter cartridge 631, it is difficult to ensure that the dredging spring 633 completely covers all the first filter holes 622. For this reason, please refer to Fig.10 and Fig.13 The bottom of the housing 610 is provided with an extrusion piece that abuts against the lower end of the second filter cartridge 631. The upper end of the second filter cartridge 631 is circumferentially evenly provided with a plurality of protrusions 634. The lower end surface of the counterweight bin 510 is circumferentially evenly provided with a plurality of top blocks 501 that are adapted to the protrusions 634. The lower end of the drive shaft 540 is provided with a spline sleeve 670. The second filter cartridge 631 is provided with a connecting frame 660, and the connecting frame 660 is axially slidably sleeved on the spline sleeve 670.

[0077] Specifically, in the process of driving the second filter cartridge 631 to rotate circumferentially by the driving shaft 540, the extrusion piece at the lower end always applies a vertical upward thrust to the second filter cartridge 631, and the upper end of the second filter cartridge 631 is always in contact with the top block 501; when the protrusion 634 at the upper end of the second filter cartridge 631 is offset from the corresponding top block 501, the extrusion piece pushes the second filter cartridge 631 to rise vertically, and when the protrusion 634 contacts the corresponding top block 501 again, the second filter cartridge 631 moves downward under the restriction of the top block 501, and so on and so forth, so that the second filter cartridge 631 can be moved downwardly. During the circumferential rotation of 631, it moves up and down periodically. In this way, the moving path of the dredging spring 633 is a circumferential wavy trajectory. During the long-term rotation process, the wavy trajectory crosses and folds with each other, so that the action range of the dredging spring 633 can cover the multiple groups of first filter holes 622 on the first filter cartridge 621. By setting the distribution interval of the dredging spring 633 and the range of the up and down displacement of the second filter cartridge 631, it can be ensured that the dredging spring 633 can completely cover all the first filter holes 622 on the first filter cartridge 621, thereby improving the dredging effect.

[0078] It is worth noting that during the circumferential rotation and up and down displacement of the second filter cartridge 631, the clearing spring 633 can not only clear the first filter hole 622, but also rub and scrape off the stains adhered to the side wall of the first filter cartridge 621, thereby further improving the cleaning effect of retained dirt; in addition, during the upward movement of the second filter cartridge 631, its own shaking amplitude will also increase, thereby improving the removal effect of impurities retained inside itself.

[0079] Accordingly, see Fig.11 The extrusion member includes an annular air chamber 611 opened at the lower end of the housing 610, an elastic air bag sheet 612 is provided at the upper opening of the annular air chamber 611, and the lower end of the second filter cartridge 631 is movably embedded in the housing 610 and abuts against the elastic air bag sheet 612;

[0080] Specifically, the annular air chamber 611 is sealed and filled with gas with a certain pressure. The specific pressure is not limited, as long as the elastic air bag sheet 612 is always in an expanded state and can overcome the gravity of the second filter cartridge 631, under the action of the air pressure of the annular air chamber 611, the elastic air bag sheet 612 elastically expands and fits tightly with the lower end of the second filter cartridge 631. The elastic air bag sheet 612 always applies an upward thrust to the second filter cartridge 631, thereby ensuring that the second filter cartridge 631 is in contact with the top block 501 to ensure the stability of the up and down movement of the second filter cartridge 631; in addition, the elastic air bag sheet 612 also has the function of sealing the lower end of the second filter cartridge 631, thereby further enhancing the separation effect of the first filter chamber 640 and the second filter chamber 650.

[0081] See also Fig.13 Considering the change in relative position between the second filter cartridge 631, the first filter cartridge 621 and the housing 610, in order to prevent impurities from penetrating from the gap between the second filter cartridge 631 and the first filter cartridge 621 and the gap between the second filter cartridge 631 and the housing 610 during the movement of the second filter cartridge 631, a first sealing ring 635 sealedly connected to the first filter cartridge 621 is provided on the second filter cartridge 631, and a second sealing ring 502 sealedly connected to the second filter cartridge 631 is provided on the lower end surface of the counterweight bin 510;

[0082] During the movement of the second filter cartridge 631, the first filter cartridge 621 is always sealed by the first sealing ring 635, and the second filter cartridge 631 is always sealed by the second sealing ring 502, thereby effectively separating the first filter chamber 640 and the second filter chamber 650 to prevent impurities from leaking and affecting the filtering effect of water quality.

[0083] In one embodiment, see Fig.14, further comprising a first vacuum chamber 220 and a second vacuum chamber 250, wherein the first vacuum chamber 220 is disposed between the variable displacement water pump 200 and the water pumping pipe 210, wherein a spiral blade is rotatably installed in the first vacuum chamber 220, wherein a check valve 240 is installed at one end of the water pumping pipe 210 close to the first vacuum chamber 220, and a drain pipe 230 is connected to the output end of the variable displacement water pump 200; one end of the second vacuum chamber 250 is connected to the first vacuum chamber 220, and the other end is connected to the variable displacement water pump 200, and an auxiliary pump 260 is installed at one side of the second vacuum chamber 250;

[0084] Specifically, when pumping water, the auxiliary pump 260 is first turned on to push the water in the second vacuum chamber 250 into the variable displacement water pump 200, and then flows into the first vacuum chamber 220. The water flowing into the first vacuum chamber 220 pushes the air in the first vacuum chamber 220 into the second vacuum chamber 250. After the air in the first vacuum chamber 220 is exhausted, the auxiliary pump 260 is turned off, and the variable displacement water pump 200 is turned on to evacuate the first vacuum chamber 220. When the vacuum degree of the first vacuum chamber 220 reaches a preset value, which can be 0.1-10Pa, the check valve 240 is automatically opened to start the pumping operation.

[0085] It should be noted that the installation of spiral blades in the first vacuum chamber 220, in conjunction with the variable volume water pump 200, can cause cavitation in the first vacuum chamber 220 under a certain vacuum state, and the second vacuum chamber 250 assists the variable volume water pump 200 and the water suction pipe to discharge excess gas, thereby increasing the suction range and water flow rate of the variable volume water pump 200, and can directly extract water 50 meters underground, and the horizontal extraction distance can reach about 500 meters.

[0086] The second aspect of the present invention discloses a water pumping method of a deep well water pumping device for ground use, comprising the following steps:

[0087] S1, fixing the expansion unit 300 at the upper opening of the deep well 110;

[0088] S2, vertically lowering the counterweight unit 500 into the deep well 110 through the traction unit 400 until the pumping end of the pumping pipe 210 is submerged in water;

[0089] S3, start the variable capacity water pump 200, the water passes through the first filter chamber 640, the second filter chamber 650 and the counterweight bin 510 in sequence and enters the water pumping pipe 210, and starts pumping water.

[0090] The specific implementation methods of this embodiment are described above, but this embodiment is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Ordinary technicians in this field can also make many forms inspired by this embodiment, all of which are within the protection of this embodiment.

Claims

1. A deep well water pumping device for use on the ground, comprising a variable displacement water pump (200) located on the ground (100), wherein an input end of the variable displacement water pump (200) is connected to a water pumping pipe (210) extending into a deep well (110); characterized in that: Also includes: A counterweight unit (500) is arranged at one end of the water pumping pipe (210) away from the variable displacement water pump (200), comprising a counterweight bin (510) in communication with the water pumping pipe (210), wherein a plurality of filter screens (520) are arranged around the bottom of the counterweight bin (510); A filter unit (600) is arranged at one end of the counterweight bin (510) away from the water pumping pipe (210), comprising a cover shell (610) detachably connected to the counterweight bin (510), a first filter element (620) detachably connected to the cover shell (610), and a second filter element (630) movably arranged between the cover shell (610) and the first filter element (620); a first filter cavity (640) is formed between the first filter element (620) and the second filter element (630), and a second filter cavity (650) is formed between the second filter element (630) and the cover shell (610); The expansion unit (300) is arranged at the upper opening of the deep well (110), and comprises a hollow mounting platform (310), wherein the water pumping pipe (210) movably passes through the hollow mounting platform (310); A traction unit (400), which is disposed on the hollow mounting platform (310) and is used to traction the counterweight unit (500); The first filter element (620) comprises a first filter cartridge (621), a plurality of first filter holes (622) are circumferentially formed on the first filter cartridge (621), and an end cap (623) adapted to the housing (610) is provided at the lower end of the first filter cartridge (621); The second filter element (630) comprises a second filter cartridge (631) arranged between the first filter cartridge (621) and the cover shell (610), a plurality of second filter holes (632) being circumferentially formed on the second filter cartridge (631), the aperture of the second filter holes (632) being smaller than the aperture of the first filter holes (622); The second filter cartridge (631) is rotatably arranged between the first filter cartridge (621) and the cover shell (610); the second filter cartridge (631) is provided with a plurality of dredging springs (633) in contact with the first filter cartridge (621); a driving member for driving the second filter cartridge (631) is provided in the middle of the counterweight bin (510); A first retention bin (641) is provided at the bottom of the first filter cavity (640), and a second retention bin (651) is provided at the bottom of the second filter cavity (650); The driving member comprises a driving shaft (540) mounted vertically and rotatably in the middle of the counterweight bin (510), the driving shaft (540) being used to drive the second filter cartridge (631); a water wheel blade (550) is mounted on one end of the driving shaft (540) extending into the water suction pipe (210), and an annular water inlet (530) communicating with the water suction pipe (210) is provided in the counterweight bin (510); The bottom of the cover shell (610) is provided with an extrusion piece that abuts against the lower end of the second filter cartridge (631); the upper end of the second filter cartridge (631) is evenly distributed with a plurality of protrusions (634) in the circumferential direction; and the lower end surface of the counterweight bin (510) is evenly distributed with a plurality of top blocks (501) that match the protrusions (634); A spline sleeve (670) is installed at the lower end of the driving shaft (540), a connecting frame (660) is provided on the second filter cylinder (631), and the connecting frame (660) is axially slidably sleeved on the spline sleeve (670).

2. A ground deep well pumping device according to claim 1, characterized in that: The traction unit (400) comprises a plurality of groups of winding drums (410) rotatably mounted on a hollow mounting platform (310); a traction motor (420) for driving the winding drums (410) is fixed on the hollow mounting platform (310); a traction cable (430) is wound on the winding drum (410); a through hole (311) for accommodating the traction cable (430) is provided on the hollow mounting platform (310); and one end of the traction cable (430) away from the winding drum (410) is fixedly connected to the counterweight bin (510).

3. A ground deep well pumping device according to claim 2, characterized in that: The expansion support unit (300) further comprises an expansion support ring (320) located directly below the hollow mounting platform (310); a plurality of groups of main support rods (330) are circumferentially arranged on the lower end surface of the hollow mounting platform (310); and a secondary support rod (340) is hingedly connected between the middle of the main support rod (330) and the expansion support ring (320); One end of the main support rod (330) is hinged to the hollow mounting platform (310), and one end of the main support rod (330) away from the hollow mounting platform (310) is provided with an expansion support plate (350) adapted to the deep well (110); A plurality of guide rods (360) movably penetrating the hollow mounting platform (310) are vertically fixed to the expansion ring (320); a limit plate (370) is provided at the upper end of the guide rod (360); an expansion spring (380) is provided between the limit plate (370) and the hollow mounting platform (310); and the expansion spring (380) is movably sleeved on the guide rod (360).

4. A ground deep well pumping device according to claim 1, characterized in that: The extrusion component comprises an annular air chamber (611) opened at the lower end of the cover shell (610), an elastic air bag sheet (612) is provided at the upper opening of the annular air chamber (611), and the lower end of the second filter cartridge (631) is movably embedded in the cover shell (610) and abuts against the elastic air bag sheet (612).

5. A ground deep well pumping device according to claim 1, characterized in that: The invention also comprises a first vacuum chamber (220) and a second vacuum chamber (250), wherein the first vacuum chamber (220) is arranged between a variable displacement water pump (200) and a water extraction pipe (210), wherein a spiral blade is rotatably installed in the first vacuum chamber (220), a check valve (240) is installed at one end of the water extraction pipe (210) close to the first vacuum chamber (220), and a drainage pipe (230) is connected to the output end of the variable displacement water pump (200); one end of the second vacuum chamber (250) is connected to the first vacuum chamber (220), and the other end is connected to the variable displacement water pump (200), and an auxiliary pump (260) is installed on one side of the second vacuum chamber (250).

6. A method for pumping water using the ground deep well pumping device according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1, fixing the expansion unit (300) at the upper opening of the deep well (110); S2, vertically lowering the counterweight unit (500) into the deep well (110) through the traction unit (400) until the pumping end of the pumping pipe (210) is submerged in water; S3, turning on the variable volume water pump (200), the water passes through the first filter chamber (640), the second filter chamber (650) and the counterweight bin (510) in sequence and enters the water pumping pipe (210), and water pumping begins.

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