A composite sand filter pipe

Abstract

The present invention discloses a composite sand filter tube, which belongs to the technical field of sand filter tubes and aims at the problem that the filter holes of the filter layer are easily clogged, thereby affecting the filtering effect of the filter layer. The composite sand filter tube comprises a main pipe, a top of the outer side wall of the main pipe is provided with a plurality of first filter holes distributed in a circumferential manner, an elastic cylinder is sleeved on the outer periphery of the main pipe, a plurality of second filter holes distributed in a circumferential manner are provided on the outer side wall of the elastic cylinder, a plurality of circumferentially distributed corrugated strips are fixed on the inner side wall of the elastic cylinder, and the corrugated strips are staggered with the second filter holes; the present invention enables the elastic cylinder to exhibit periodic expansion and recovery, forming a vibration-like effect, so that large-grained gravel and medium-grained gravel on the outer periphery of the second filter holes cannot adhere to the outer periphery of the second filter holes, thereby avoiding clogging of the second filter holes; at the same time, the vibration effect formed can vibrate the medium-grained gravel stuck in the second filter holes out of the second filter holes, thereby avoiding clogging of the second filter holes by the medium-grained gravel and affecting the filtering effect of the gravel.

Description

Technical Field

[0001] The invention belongs to the technical field of sand filter pipes, and particularly relates to a composite sand filter pipe. Background Art

[0002] When the existing sand filter pipe is in use, the sand is filtered through the filter layer outside the main pipe. However, after long-term use, the filter holes of the filter layer are easily clogged, affecting the filtering effect of the filter layer.

[0003] Therefore, a composite sand filter tube is needed to solve the problem in the prior art that the filter holes of the filter layer are easily clogged, thereby affecting the filtering effect of the filter layer. Summary of the Invention

[0004] The object of the present invention is to provide a composite sand filter pipe to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a composite sand filter pipe, comprising a main pipe, a plurality of circumferentially distributed first filter holes being opened at the top of the outer side wall of the main pipe, an elastic barrel being sleeved on the periphery of the main pipe, a plurality of circumferentially distributed second filter holes being opened on the outer side wall of the elastic barrel, a plurality of circumferentially distributed corrugated strips being fixed to the inner side wall of the elastic barrel, the corrugated strips being staggered with the second filter holes, a plurality of evenly distributed rotating rings being arranged inside the elastic barrel, a plurality of circumferentially distributed contact plates being fixed to the outer side wall of the rotating rings and cooperating with the corrugated strips, and a plurality of circumferentially distributed connecting columns being fixed between the rotating rings.

[0006] Furthermore, a second fixing ring is fixed to the top surface of the elastic barrel, a first fixing ring is fixed to the top of the outer side wall of the main pipe, and the adjacent surfaces of the first fixing ring and the second fixing ring are respectively provided with engaging grooves, and engaging ring teeth are movably engaged between the two engaging grooves. A mounting plate is fixed to the bottom surface of the first fixing ring, a motor is fixed to one side surface of the mounting plate, a gear is fixed to the output end of the motor, the gear is engaged with the engaging ring teeth, and the top surface of the connecting column is fixed to the bottom surface of the engaging ring teeth.

[0007] Furthermore, a second spoiler is fixed to the top surface of the engaging ring teeth.

[0008] Furthermore, a plurality of connecting rods distributed in a circumference are fixed to the bottom surface of the rotating ring at the bottom, and a first spoiler is fixed to one side surface of the connecting rods.

[0009] Furthermore, a connecting ring is fixed near the middle of the outer side wall of the main pipe, and the bottom surface of the elastic cylinder is fixed to the inclined surface of the connecting ring.

[0010] Furthermore, a plurality of openings distributed in a circumferential manner are provided on the bottom of the outer side wall of the elastic cylinder.

[0011] Furthermore, one end of the contact plate close to the elastic barrel is rounded.

[0012] Furthermore, a plurality of top holes distributed in a circle are provided on the top surface of the first fixing ring, a contact strip is movably connected in the top hole, a vertical rod is fixed on the bottom surface of the contact strip, a plurality of third spoilers distributed in a circle are fixed on one side surface of the vertical rod, the third spoilers correspond one to one with the plurality of first filter holes in a vertical direction, side strips are fixed on the bottom of the two opposite side surfaces of the outer side wall of the contact strip, a spring is fixed on the top surface of the side strip, the top surface of the spring is fixed to the bottom surface of the first fixing ring, and a plurality of push strips distributed in a circle are fixed on the top surface of the engaging ring teeth.

[0013] Compared with the prior art, the composite sand filter provided by the present invention has at least the following beneficial effects:

[0014] (1) The motor, gears and engaging ring teeth are provided so that the connecting column can rotate, thereby driving the rotating ring to rotate. The rotating ring, contact plate and corrugated strip are provided so that the elastic cylinder can expand and recover periodically, forming a vibration-like effect, so that the large-grained gravel and medium-grained gravel outside the second filter hole cannot adhere to the outside of the second filter hole, thereby avoiding the clogging of the second filter hole. At the same time, the vibration effect formed can vibrate the medium-grained gravel stuck in the second filter hole out of the second filter hole, thereby avoiding the medium-grained gravel clogging the second filter hole and affecting the filtering effect of the gravel.

[0015] (2) By setting up a plurality of first spoilers and one second spoiler, the fluid flow velocity at the opening position is large, and the fluid flow velocity at the second spoiler position is small, so that the fluid at the opening position will impact the fluid at the second spoiler position, and then the fluid at the second spoiler position will not enter the main pipe and the bottom of the elastic barrel through the opening, thereby preventing large particles and medium-sized gravel in the fluid outside the elastic barrel from entering the main pipe and the elastic barrel without being filtered, causing large particles and medium-sized gravel to impact the first filter hole, thereby affecting the fine filtering structure of the first filter hole.

[0016] (3) By setting a push bar, the locking ring gear can drive the push bar to rotate when it rotates, and then push the contact bar to move downward, so that the third spoiler can move downward, driving the fluid and small particles of gravel outside the first filter hole, avoiding the situation where a large amount of small particles of gravel are concentrated and blocked by the first filter hole, causing the first filter hole to be blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a side structural schematic diagram of the present invention;

[0019] Figure 3 This is a schematic diagram of the top structure of the present invention;

[0020] Figure 4 This is a schematic diagram of the locking ring gear structure of the present invention;

[0021] Figure 5 This is a schematic cross-sectional structural diagram of the first fixing ring of the present invention;

[0022] Figure 6 It is a partial structural schematic diagram of the present invention;

[0023] Figure 7 for Figure 6 Schematic diagram of the enlarged structure at A in the middle;

[0024] Figure 8 This is a schematic structural diagram of the rotating ring of the present invention;

[0025] Figure 9 for Figure 8 Schematic diagram of the enlarged structure at B in the middle;

[0026] Figure 10 Schematic diagram of the structure of the third spoiler of the present invention;

[0027] Figure 11 Schematic diagram of the structure of the contact strip of the present invention.

[0028] In the picture:

[0029] 100, main pipe; 101, first filter hole; 102, elastic cylinder; 103, second filter hole; 104, opening; 105, connecting ring;

[0030] 200, first fixing ring; 201, second fixing ring; 202, engaging groove; 203, engaging ring teeth; 204, gear; 205, mounting plate; 206, motor;

[0031] 300, corrugated strip; 301, rotating ring; 302, contact plate; 303, connecting column;

[0032] 400, connecting rod; 401, first spoiler;

[0033] 500, second spoiler;

[0034] 600, top hole; 601, contact strip; 602, push strip; 603, side strip; 604, spring; 605, vertical rod; 606, third spoiler. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. It should be noted that, in the absence of conflict, the embodiments in this disclosure and the features in the embodiments can be combined, separated, interchanged and / or rearranged with each other. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0036] In the accompanying drawings, the sizes and relative sizes of components may be exaggerated for clarity and / or descriptive purposes. When the exemplary embodiments can be implemented differently, the specific process sequence may be performed in a different order than described. For example, two processes described in succession may be performed substantially simultaneously or in a reverse order from the described order. In addition, the same reference numerals represent the same components.

[0037] The terms used herein are for the purpose of describing specific embodiments and are not intended to be restrictive. As used herein, unless the context clearly indicates otherwise, the singular forms "one (kind, person)" and "said (the)" are also intended to include plural forms. In addition, when the terms "comprise" and / or "include" and their variations are used in this specification, the features, integral bodies, steps, operations, parts, assemblies and / or their groups stated are explained, but the presence or addition of one or more other features, integral bodies, steps, operations, parts, assemblies and / or their groups is not excluded. It should also be noted that, as used herein, the terms "substantially", "approximately" and other similar terms are used as approximate terms and not as degree terms, so that they are used to explain the inherent deviations of the measured values, calculated values and / or the values provided that will be recognized by those of ordinary skill in the art.

[0038] See also Figures 1-11 The present invention provides a composite sand filter pipe, including a main pipe 100, wherein a plurality of first filter holes 101 distributed in a circumferential manner are opened on the top of the outer side wall of the main pipe 100, an elastic cylinder 102 is sleeved on the outer periphery of the main pipe 100, a plurality of second filter holes 103 distributed in a circumferential manner are opened on the outer side wall of the elastic cylinder 102, a plurality of circumferentially distributed corrugated strips 300 are fixed on the inner side wall of the elastic cylinder 102, the corrugated strips 300 and the second filter holes 103 are staggered, a plurality of evenly distributed rotating rings 301 are arranged in the elastic cylinder 102, a plurality of circumferentially distributed contact plates 302 matched with the corrugated strips 300 are fixed on the outer side wall of the rotating ring 301, and a plurality of circumferentially distributed connecting columns 303 are fixed between the plurality of rotating rings 301.

[0039] This solution has the following working process: first, through the threads at both ends of the main pipe 100, the two ends of the main pipe 100 are screwed and fixed to the corresponding equipment interface, so that the position of the main pipe 100 is fixed, and then the interface of the corresponding equipment and the main pipe 100 are placed in the well pipe, and then the motor 206 is started, the motor 206 rotates to drive the gear 204 to rotate, the gear 204 rotates to drive the locking ring gear 203 to rotate, the locking ring gear 203 rotates to drive several connecting columns 303 to rotate, the connecting column 303 rotates to drive several rotating rings 301 to rotate, the rotating ring 301 rotates to drive the contact plate 302 to rotate, the contact plate 302 rotates and contacts the wave bar 300, pushing the wave bar 300 to expand outward, and the wave The outward expansion of the strip 300 drives the elastic barrel 102 to expand outward, and then the contact plate 302 rotates to the position of the second filter hole 103, and the contact plate 302 continues to rotate, and this is repeated, so that the elastic barrel 102 expands and recovers periodically. Since the elastic barrel 102 expands and recovers periodically, a vibration-like effect is formed, so that large-grained gravel and medium-grained gravel on the periphery of the second filter hole 103 cannot adhere to the periphery of the second filter hole 103, thereby avoiding clogging of the second filter hole 103. At the same time, the vibration effect formed can shake the medium-grained gravel stuck in the second filter hole 103 out of the second filter hole 103, thereby avoiding clogging of the second filter hole 103 by the medium-grained gravel. The fluid outside the elastic barrel 102 enters between the elastic barrel 102 and the main pipe 100 through the second filter hole 103. The second filter hole 103 filters large and medium-sized gravel particles outside the elastic barrel 102. Small gravel particles follow the fluid to move between the elastic barrel 102 and the main pipe 100. Some of the small gravel particles directly fall onto the connecting ring 105. The fluid passes through the first filter hole 101, and the small gravel particles are blocked outside the main pipe 100 by the first filter hole 101. These small gravel particles fall onto the connecting ring 105. The fluid passes through the second filter hole 103 and the first filter hole 101, filtering out large, medium and small gravel particles in the fluid. The filtered fluid enters the main pipe 100 through the first filter hole 101 and then enters the corresponding position.When the rotating ring 301 rotates, it drives the connecting rod 400 to rotate, and the rotation of the connecting rod 400 drives the first spoiler 401 to rotate. The rotation of the first spoiler 401 makes the fluid at the bottom between the main pipe 100 and the elastic barrel 102 evenly stirred, and the fluid at this position is pushed outward, and the fluid is discharged to the outside of the elastic barrel 102 through the opening 104. At the same time, the small particles of gravel that fall on the connecting ring 105 can be discharged to the outside of the elastic barrel 102. When the fluid is discharged outward at this position, due to the fast flow rate, the fluid outside the elastic barrel 102 will not enter the main pipe 100 and the bottom of the elastic barrel 102 through the opening 104, thereby preventing large particles and medium-sized gravel in the fluid outside the elastic barrel 102 from entering the space between the main pipe 100 and the elastic barrel 102 without being filtered, causing large particles to accumulate. The large and medium-sized sand particles impact the first filter hole 101, affecting the fine filtering structure of the first filter hole 101. At the same time, the engagement ring gear 203 rotates to drive the second spoiler 500 to rotate. The rotation of the second spoiler 500 stirs the fluid and sand particles outside the elastic barrel 102, thereby enhancing the flow speed of the fluid, thereby improving the filtering effect of the second filter hole 103 on large and medium-sized sand particles. At the same time, the fluid passing through the second filter hole 103 has a flow rate, and then the small sand particles are filtered through the first filter hole 101. When the fluid passes through the first filter hole 101, it will impact the outer wall of the main pipe 100. This arrangement can prevent small sand particles from gathering outside the first filter hole 101, causing the first filter hole 101 to be blocked, and effectively impact the small sand particles attached to the periphery of the first filter hole 101. Since there is only one second spoiler 500 and there are multiple first spoilers 401, the fluid flow rate at the position of the opening 104 is large, and the fluid flow rate at the position of the second spoiler 500 is small, so that the fluid at the position of the opening 104 will impact the fluid at the position of the second spoiler 500, so that the fluid at the position of the second spoiler 500 will not enter the main pipe 100 and the bottom of the elastic cylinder 102 through the opening 104.

[0040] When the engaging ring gear 203 rotates, it drives the pushing bar 602 to rotate, and the pushing bar 602 contacts and cooperates with the contact bar 601, causing the contact bar 601 to move downward. At this time, the spring 604 is stretched, and the contact bar 601 moves downward, driving the vertical rod 605 to move downward. The vertical rod 605 moves downward, driving the third spoiler 606 to move downward, and the third spoiler 606 moves downward to drive the fluid outside the first filter hole 101, stirring the small particles of sand carried in the fluid, so that the small particles of sand in the fluid can be dispersed and will not be concentrated outside the first filter hole 101. When the pushing bar 602 passes the contact bar 601, the spring 604 pulls the contact bar 601 upward, continuing to stir the fluid outside the first filter hole 101, and repeating this process, so that the fluid outside the first filter hole 101 is continuously stirred, and the small particles of sand in the fluid are continuously dispersed, preventing the concentrated small particles of sand from clogging the first filter hole 101.

[0041] According to the above working process, it can be known that: through the provided motor 206, gear 204, and engaging ring gear 203, the connecting column 303 can be rotated, thereby driving the rotating ring 301 to rotate, and through the provided rotating ring 301, contact plate 302, and corrugated strip 300, the elastic barrel 102 can exhibit periodic expansion and recovery, forming a vibration-like effect, so that large-grained gravel and medium-grained gravel outside the second filter hole 103 cannot adhere to the outside of the second filter hole 103, thereby avoiding clogging of the second filter hole 103. At the same time, the vibration effect formed can vibrate the medium-grained gravel stuck in the second filter hole 103 out of the second filter hole 103, thereby avoiding clogging of the second filter hole 103 by the medium-grained gravel and affecting the filtering effect of the gravel.

[0042] By providing a plurality of first spoilers 401 and one second spoiler 500, the fluid flow velocity at the position of the opening 104 is high, and the fluid flow velocity at the position of the second spoiler 500 is low, so that the fluid at the position of the opening 104 will impact the fluid at the position of the second spoiler 500, and thus the fluid at the position of the second spoiler 500 will not enter the main pipe 100 and the bottom of the elastic cylinder 102 through the opening 104, thereby preventing large particles and medium-sized gravel in the fluid outside the elastic cylinder 102 from entering the space between the main pipe 100 and the elastic cylinder 102 without being filtered, causing the large particles and medium-sized gravel to impact the first filter hole 101, thereby affecting the fine filtering structure of the first filter hole 101.

[0043] In one embodiment, a second fixing ring 201 is fixed to the top surface of the elastic barrel 102, and a first fixing ring 200 is fixed to the top of the outer wall of the main pipe 100. The adjacent surfaces of the first fixing ring 200 and the second fixing ring 201 are respectively provided with a locking groove 202, and a locking ring tooth 203 is movably engaged between the two locking grooves 202. A mounting plate 205 is fixed to the bottom surface of the first fixing ring 200, and a motor 206 is fixed to one side of the mounting plate 205. A gear 204 is fixed to the output end of the motor 206, and the gear 204 is engaged with the locking ring tooth 203. The top surface of the connecting column 303 is fixed to the bottom surface of the locking ring tooth 203.

[0044] By setting the second fixing ring 201, the first fixing ring 200, the locking groove 202 and the locking ring teeth 203, the second fixing ring 201 can be connected to the first fixing ring 200, which is convenient for limiting the top of the elastic barrel 102. This setting makes it easy for the locking ring teeth 203 to rotate.

[0045] In one embodiment, a second spoiler 500 is fixed to the top surface of the engaging ring gear 203 .

[0046] By providing the second spoiler 500 , the engagement ring gear 203 can drive the second spoiler 500 to rotate when it rotates, thereby stirring the fluid outside the elastic cylinder 102 to prevent sand and gravel from agglomerating in the fluid.

[0047] In one embodiment, a plurality of connecting rods 400 distributed in a circumference are fixed to the bottom surface of the rotating ring 301 at the bottom, and a first spoiler 401 is fixed to one side of the connecting rods 400.

[0048] By providing the first spoiler 401, the fluid at the bottom of the elastic barrel 102 can be stirred to form a turbulent flow, which can drive the gravel on the inclined surface of the connecting ring 105 and discharge it to the outside through the opening 104. At the same time, the turbulent flow can block the fluid outside the elastic barrel 102, preventing the fluid outside the elastic barrel 102 and the gravel in the fluid from entering the elastic barrel 102 through the opening 104, causing the gravel in this part of the fluid to not be filtered through the first filter hole 101, causing the first filter hole 101 to be blocked.

[0049] In one embodiment, a connecting ring 105 is fixed near the middle of the outer wall of the main pipe 100 , and the bottom surface of the elastic cylinder 102 is fixed to the inclined surface of the connecting ring 105 .

[0050] The bottom surface of the elastic cylinder 102 is fixed to the outer wall of the main pipe 100 through the connecting ring 105. At the same time, the surface of the connecting ring 105 is inclined, which ensures that the small gravel filtered through the second filter hole 103 can fall into the inclined surface of the connecting ring 105, and then be driven by the turbulence generated by the first spoiler 401 to be discharged from the opening 104 to the periphery of the elastic cylinder 102.

[0051] In one embodiment, a plurality of openings 104 distributed in a circumferential manner are formed on the bottom of the outer side wall of the elastic cylinder 102 .

[0052] The opening 104 is provided so that gravel on the connecting ring 105 can be discharged from the opening 104 under the action of the first spoiler 401 , thereby preventing the gravel from accumulating at the bottom of the elastic cylinder 102 .

[0053] In one embodiment, the end of the contact plate 302 close to the elastic cylinder 102 is rounded.

[0054] By setting one end of the contact plate 302 to be rounded, the contact plate 302 can make contact with the corrugated strip 300 more smoothly, thereby reducing the friction between the contact plate 302 and the corrugated strip 300 .

[0055] In one embodiment, a plurality of circumferentially distributed top holes 600 are defined on the top surface of the first fixing ring 200, and a contact strip 601 is movably connected in the top hole 600. A vertical rod 605 is fixed to the bottom surface of the contact strip 601, and a plurality of circumferentially distributed third spoilers 606 are fixed to one side surface of the vertical rod 605. The third spoilers 606 correspond one-to-one to the plurality of vertical first filter holes 101. Side strips 603 are fixed to the bottom of the two opposite side surfaces of the outer side wall of the contact strip 601, and a spring 604 is fixed to the top surface of the side strip 603. The top surface of the spring 604 is fixed to the bottom surface of the first fixing ring 200. A plurality of circumferentially distributed push strips 602 are fixed to the top surface of the engaging ring teeth 203.

[0056] By setting the push bar 602, the locking ring gear 203 can drive the push bar 602 to rotate when it rotates, thereby pushing the contact bar 601 to move downward, so that the third spoiler 606 can move downward, driving the fluid and small particles of gravel outside the first filter hole 101, and avoiding the situation where a large amount of small particles of gravel are concentrated and blocked by the first filter hole 101, causing the first filter hole 101 to be blocked.

[0057] In summary: first, through the threads at both ends of the main pipe 100, the two ends of the main pipe 100 are screwed and fixed to the corresponding equipment interface, so that the position of the main pipe 100 is fixed, and then the interface of the corresponding equipment and the main pipe 100 are placed in the well pipe, and then the motor 206 is started, the motor 206 rotates to drive the gear 204 to rotate, the gear 204 rotates to drive the engaging ring gear 203 to rotate, the engaging ring gear 203 rotates to drive several connecting columns 303 to rotate, the connecting column 303 rotates to drive several rotating rings 301 to rotate, the rotating ring 301 rotates to drive the contact plate 302 to rotate, the contact plate 302 rotates and contacts the corrugated strip 300, pushing the corrugated strip 300 to expand outward, and the corrugated strip 300 to The outward expansion drives the elastic barrel 102 to expand outward, and then the contact plate 302 rotates to the position of the second filter hole 103, and the contact plate 302 continues to rotate, and this is repeated, so that the elastic barrel 102 expands and recovers periodically. Since the elastic barrel 102 expands and recovers periodically, a vibration-like effect is formed, so that large-grained gravel and medium-grained gravel on the periphery of the second filter hole 103 cannot adhere to the periphery of the second filter hole 103, thereby avoiding clogging of the second filter hole 103. At the same time, the vibration effect formed can shake the medium-grained gravel stuck in the second filter hole 103 out of the second filter hole 103, thereby avoiding clogging of the second filter hole 103 by the medium-grained gravel. The fluid outside the elastic barrel 102 enters between the elastic barrel 102 and the main pipe 100 through the second filter hole 103. The second filter hole 103 filters large and medium-sized gravel particles outside the elastic barrel 102, while small-sized gravel particles follow the fluid to move between the elastic barrel 102 and the main pipe 100. Some of the small-sized gravel particles directly fall onto the connecting ring 105. The fluid passes through the first filter hole 101, and the small-sized gravel particles are blocked outside the main pipe 100 by the first filter hole 101. These small-sized gravel particles fall onto the connecting ring 105. The fluid passes through the second filter hole 103 and the first filter hole 101, filtering out large, medium and small-sized gravel particles in the fluid. The filtered fluid passes through the first filter hole 101 and enters the main pipe 100, and then enters the corresponding position.When the rotating ring 301 rotates, it drives the connecting rod 400 to rotate, and the rotation of the connecting rod 400 drives the first spoiler 401 to rotate. The rotation of the first spoiler 401 makes the fluid at the bottom between the main pipe 100 and the elastic barrel 102 evenly stirred, and the fluid at this position is pushed outward, and the fluid is discharged to the outside of the elastic barrel 102 through the opening 104. At the same time, the small particles of gravel that fall on the connecting ring 105 can be discharged to the outside of the elastic barrel 102. When the fluid is discharged outward at this position, due to the fast flow rate, the fluid outside the elastic barrel 102 will not enter the main pipe 100 and the bottom of the elastic barrel 102 through the opening 104, thereby preventing large particles and medium-sized gravel in the fluid outside the elastic barrel 102 from entering the space between the main pipe 100 and the elastic barrel 102 without being filtered, causing large particles to accumulate. The large and medium-sized sand particles impact the first filter hole 101, affecting the fine filtering structure of the first filter hole 101. At the same time, the engagement ring gear 203 rotates to drive the second spoiler 500 to rotate. The rotation of the second spoiler 500 stirs the fluid and sand particles outside the elastic barrel 102, thereby enhancing the flow speed of the fluid, thereby improving the filtering effect of the second filter hole 103 on large and medium-sized sand particles. At the same time, the fluid passing through the second filter hole 103 has a flow rate, and then the small sand particles are filtered through the first filter hole 101. When the fluid passes through the first filter hole 101, it will impact the outer wall of the main pipe 100. This arrangement can prevent small sand particles from gathering outside the first filter hole 101, causing the first filter hole 101 to be blocked, and effectively impact the small sand particles attached to the periphery of the first filter hole 101. Since there is only one second spoiler 500 and there are multiple first spoilers 401, the fluid flow rate at the position of the opening 104 is large, and the fluid flow rate at the position of the second spoiler 500 is small, so that the fluid at the position of the opening 104 will impact the fluid at the position of the second spoiler 500, so that the fluid at the position of the second spoiler 500 will not enter the main pipe 100 and the bottom of the elastic cylinder 102 through the opening 104.

[0058] When the engaging ring gear 203 rotates, it drives the pushing bar 602 to rotate, and the pushing bar 602 contacts and cooperates with the contact bar 601, causing the contact bar 601 to move downward. At this time, the spring 604 is stretched, and the contact bar 601 moves downward, driving the vertical rod 605 to move downward. The vertical rod 605 moves downward, driving the third spoiler 606 to move downward, and the third spoiler 606 moves downward to drive the fluid outside the first filter hole 101, stirring the small particles of sand carried in the fluid, so that the small particles of sand in the fluid can be dispersed and will not be concentrated outside the first filter hole 101. When the pushing bar 602 passes the contact bar 601, the spring 604 pulls the contact bar 601 upward, continuing to stir the fluid outside the first filter hole 101, and repeating this process, so that the fluid outside the first filter hole 101 is continuously stirred, and the small particles of sand in the fluid are continuously dispersed, preventing the concentrated small particles of sand from clogging the first filter hole 101.

[0059] When the contact plate 302 is not rotating, the chamfered portion of the contact plate 302 contacts the inner wall of the elastic cylinder 102 .

[0060] Among them, the aperture of the second filter hole 103 is smaller than the diameter of large and medium-sized gravel particles, so that when the elastic barrel 102 expands, the second filter hole 103 can still block large and medium-sized gravel particles, and the aperture of the first filter hole 101 is much smaller than the diameter of small-sized gravel particles.

[0061] The elastic barrel 102 is made of stainless steel.

[0062] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A composite sand filter pipe, comprising a main pipe (100), characterized in that: A plurality of first filter holes (101) distributed in a circumferential manner are provided on the top of the outer wall of the main pipe (100); an elastic cylinder (102) is provided on the outer periphery of the main pipe (100); a plurality of second filter holes (103) distributed in a circumferential manner are provided on the outer wall of the elastic cylinder (102); a plurality of circumferentially distributed wave-shaped strips (300) are fixed on the inner wall of the elastic cylinder (102); the wave-shaped strips (300) and the second filter holes (103) are staggered; a plurality of evenly distributed rotating rings (301) are provided in the elastic cylinder (102); a plurality of circumferentially distributed contact plates (302) matched with the wave-shaped strips (300) are fixed on the outer wall of the rotating ring (301); a plurality of circumferentially distributed connecting columns (303) are fixed between the rotating rings (301); A second fixing ring (201) is fixed to the top surface of the elastic cylinder (102), a first fixing ring (200) is fixed to the top of the outer wall of the main pipe (100), a locking groove (202) is respectively provided on the adjacent surfaces of the first fixing ring (200) and the second fixing ring (201), a locking ring tooth (203) is movably engaged between the two locking grooves (202), and the top surface of the connecting column (303) is fixed to the bottom surface of the locking ring tooth (203); The top surface of the first fixing ring (200) is provided with a plurality of top holes (600) distributed in a circumferential manner, and a contact strip (601) is movably connected in the top hole (600), and a vertical rod (605) is fixed to the bottom surface of the contact strip (601), and a plurality of third spoilers (606) distributed in a circumferential manner are fixed to one side of the vertical rod (605), and side strips (603) are fixed to the bottom of two opposite side surfaces of the outer wall of the contact strip (601), and a spring (604) is fixed to the top surface of the side strip (603), and the top surface of the spring (604) is fixed to the bottom surface of the first fixing ring (200), and a plurality of push strips (602) distributed in a circumferential manner are fixed to the top surface of the engaging ring gear (203).

2. The composite sand filter tube according to claim 1, characterized in that: A mounting plate (205) is fixed to the bottom surface of the first fixing ring (200), a motor (206) is fixed to one side surface of the mounting plate (205), a gear (204) is fixed to the output end of the motor (206), and the gear (204) is meshed with the locking ring teeth (203).

3. The composite sand filter tube according to claim 2, characterized in that: A second spoiler (500) is fixed on the top surface of the locking ring gear (203).

4. The composite sand filter tube according to claim 1, characterized in that: A plurality of connecting rods (400) distributed in a circumference are fixed to the bottom surface of the rotating ring (301) at the bottom, and a first spoiler (401) is fixed to one side of the connecting rod (400).

5. The composite sand filter tube according to claim 1, characterized in that: A connecting ring (105) is fixed near the middle of the outer side wall of the main pipe (100), and the bottom surface of the elastic cylinder (102) is fixed to the inclined surface of the connecting ring (105).

6. The composite sand filter tube according to claim 1, characterized in that: A plurality of openings (104) distributed in a circumferential manner are provided at the bottom of the outer side wall of the elastic cylinder (102).

7. The composite sand filter tube according to claim 1, characterized in that: One end of the contact plate (302) close to the elastic cylinder (102) is rounded.

8. The composite sand filter tube according to claim 2, characterized in that: The third spoiler (606) corresponds one-to-one to a plurality of the first filter holes (101) in the vertical direction.

Images