A jet sand flushing device and method based on a water hammer pump and a hydrocyclone

Abstract

The invention relates to the technical field of sand flushing devices, and specifically discloses a jet sand flushing device and method based on a water hammer pump and a hydrocyclone, comprising a water hammer pump, a hydrocyclone and a venturi ejector, wherein the water hammer pump comprises a pressure chamber, a water passage chamber and a drainage chamber arranged in sequence, a pressure pipe is arranged between the pressure chamber and the venturi ejector, an overflow pipe is arranged between the water passage chamber and the hydrocyclone, and a water diversion pipe is arranged between the hydrocyclone and the dam; a jet unit is arranged on the inner side of the dam, and the jet unit is arranged at the outlet of the venturi ejector; the invention utilizes the principle of water hammer effect to concentrate the energy of the outflow of the reservoir and generate a high-pressure water flow, which is intermittently ejected from the jet unit, so that the utilized energy is the kinetic energy of the water converted from the gravitational potential energy of the outflow of the reservoir, so that the energy conversion efficiency is high, compared with mechanical dredging, there is no waste discharge, and the invention has the effect of low carbon and environmental protection.

Description

Technical Field

[0001] The present invention relates to the technical field of sand flushing devices, and in particular to a jet sand flushing device and method based on a water hammer pump and a hydrocyclone. Background Art

[0002] The construction of reservoirs on sediment-laden rivers inevitably leads to siltation. This siltation shortens the reservoir's service life, reduces its storage capacity, and impacts overall benefits such as power generation. According to incomplete statistics, global reservoir capacity loss due to siltation reaches 0.5% to 1.0% annually, and in my country, this figure is as high as 2.3%. In recent years, climate change has led to frequent droughts and floods, making reservoirs increasingly important for flood control and drought relief. As my country's hydropower construction enters a post-engineering era, new dam sites are becoming increasingly scarce. Maintaining the effective storage capacity of existing reservoirs and restoring lost capacity have become crucial strategies. Furthermore, hydropower projects on sediment-laden rivers face challenges such as silt wear and cavitation damage to flow-through components. Turbine silt wear can lead to material loss in flow-through components, altering flow conditions and characteristics, reducing unit efficiency and stability, and in severe cases, even compromising the safe operation of power plants. Sediment treatment and silt reduction in existing reservoirs mostly adopt hydraulic dredging (such as density flow sediment removal, empty reservoir sediment removal), mechanical sediment removal (mud bucket type, suction type, flushing suction type), etc.

[0003] Mechanical sediment removal can be divided into three main categories based on their operating principles. The first is the bucket dredger, which relies on the dredger's mechanical force to break up the soil and transport the sediment. This type of dredger can only discharge sediment into the dredger's mud tank or a nearby mud barge, and cannot transport sediment long distances, resulting in low efficiency. The second type is the suction-lift dredger, which relies on the dredger's mechanical force to break up the soil and then uses a dredge pump for transport. These dredgers all have dredge pumps, allowing for long-distance dredging, but their suction range limits their underwater excavation depth. Long-arm cutter suction dredgers (or bucket wheel dredgers) have an extended cutter suction (or bucket wheel) arm to achieve greater dredging depth. The third type is the flushing suction dredger, which uses high-pressure water jets to break up the soil and utilizes jet pumps, submersible pumps, and gas lift systems to suction and transport the sediment. These dredgers can reach greater depths and are suitable for desilting reservoirs, ports, and waterways.

[0004] In the prior art, the patent with the authorization announcement number CN109868856B discloses a small reservoir box-type irrigation channel sand discharge device, which includes a sand pumping box, a stirring device, a sand discharge device and a power device. By setting up a stirring device and using an impeller or an electric motor as a driving force, the stirring device is driven to move. This device uses an impeller or an electric motor as a power source, which can solve the problem of sediment compaction at the bottom of the reservoir and allow the sediment to be continuously discharged under the action of the gravity flow. However, most of these methods can only passively use the limited flow energy of the water body itself to flush the riverbed, and the flushing effect is weak. It is impossible to concentrate the energy of the water body and achieve efficient flushing. Therefore, a jet sand flushing device and method based on a water hammer pump and a hydrocyclone are proposed to solve the above-mentioned problems. Summary of the Invention

[0005] The present invention provides a jet sand flushing device and method based on a water hammer pump and a hydrocyclone, aiming to solve the technical problems in related technologies of using the limited flow energy of the water body itself to flush the riverbed, resulting in weak flushing effect and inability to concentrate the water body energy and achieve efficient flushing technology.

[0006] The present invention provides a jet sand flushing device based on a water hammer pump and a hydrocyclone, comprising a water hammer pump, a hydrocyclone and a venturi ejector. The water hammer pump comprises a pressure chamber, a water passage chamber and a drainage chamber arranged in sequence. A pressure pipe is provided between the pressure chamber and the venturi ejector, an overflow pipe is provided between the water passage chamber and the hydrocyclone, a water diversion pipe is provided between the hydrocyclone and the dam, a first valve body is provided between the pressure chamber and the water passage chamber, and a second valve body is provided between the water passage chamber and the drainage chamber.

[0007] The water hammer pump and the hydrocyclone are arranged outside the dam, the venturi ejector is located inside the dam, and an injection unit is arranged on the inner side of the dam, and the injection unit is arranged at the outlet of the venturi ejector.

[0008] Preferably, a support frame is fixedly installed on one side of the dam, and the injection unit includes a fixed box, which is installed on the support frame. A spray pipe is provided inside the fixed box, and adjustment components are provided on both sides of the spray pipe. The adjustment components are used to adjust the distance between the spray pipe and the sand body.

[0009] Preferably, the injection pipe includes a sleeve and a telescopic tube, the telescopic tube is slidably fitted in the sleeve, and first tooth grooves are formed on both sides of the telescopic tube.

[0010] Preferably, the adjustment assembly includes an adjustment sleeve, an adjustment rod and a transmission gear, the adjustment rod is located between the telescopic tube and the transmission gear, the adjustment rod slides up and down in the adjustment sleeve, and a second tooth groove is provided on the side of the adjustment rod facing the transmission gear.

[0011] Preferably, an adjustment plate is slidingly provided inside the adjustment sleeve, a first elastic member is provided between the adjustment plate and the adjustment rod, positioning blocks are provided on both sides of the adjustment plate, a through hole is provided on the adjustment plate, positioning blocks corresponding to the through hole are fixedly connected on both sides of the adjustment plate, a fourth tooth groove is provided on one side of the through hole, a one-way gear is rotatably installed on the inner wall of the adjustment sleeve and meshes with the fourth tooth groove, a driving rod is hingedly provided below the adjustment rod, a third tooth groove meshed with the one-way gear is provided on the driving rod, positioning components are provided on both sides of the adjustment plate, and the positioning components are used to limit the position of the adjustment plate.

[0012] Preferably, the positioning assembly includes a limit plate that is elastically arranged inside the adjustment sleeve, and the limit plate is provided with a plurality of adjustment slots on the side facing the adjustment plate. The upper end of the limit plate is provided with a top block facing the side of the adjustment plate, and the top block is triangular and is used in conjunction with the adjustment plate.

[0013] Preferably, a locking unit for the position of the limit plate is provided at the bottom of the inner cavity of the fixed box, and the locking unit includes a top plate that slides elastically on the fixed box, and the upper ends of the top plate are fixedly connected with a pressure block and a limit block respectively, and the pressure block is located below the adjustment plate, and a positioning groove is provided below the limit plate, and the positioning groove is used in conjunction with the limit block.

[0014] Preferably, a mounting plate is fixedly connected to the outer side of the fixed box, and the support frame includes two support plates. Two guide rods symmetrically arranged on the left and right are rotatably installed on both sides of the upper side of the support frame. Positioning blocks are fixedly connected to both sides of one end of the guide rod. Guide through holes corresponding to the guide rods are provided on both sides of the mounting plate, and a positioning ring groove is provided inside the guide through hole, and the positioning ring groove is used in conjunction with the positioning block.

[0015] Preferably, the positioning ring groove is spirally arranged.

[0016] A jet sand flushing method based on a water hammer pump and a hydrocyclone comprises the following steps:

[0017] Step A: The water in the dam flows into the hydrocyclone through the water diversion pipe. The hydrocyclone separates the solid and liquid in the liquid. The separated liquid flows into the water cavity through the overflow pipe.

[0018] Step B: The liquid in the water passage cavity flows toward the pressure cavity and the drainage cavity respectively. Under the action of the water pressure, the second valve body is gradually closed, and the first valve body is opened by the water hammer effect.

[0019] Step C: The liquid is ejected from the ejection unit through the pressure pipe and the venturi ejector, and the ejected liquid is used to impact the sand body.

[0020] Beneficial effects:

[0021] 1. The water hammer effect principle is used to concentrate the energy of the outflow from the reservoir and generate high-pressure water flow. The high-pressure water flow is intermittently ejected from the injection unit, and the energy utilized is the kinetic energy of the water converted from the gravitational potential energy of the outflow from the reservoir, which makes the energy conversion efficiency high. Compared with mechanical dredging, there is no waste discharge and it has the effect of low carbon and environmental protection.

[0022] 2. After the telescopic tube sprays water, the telescopic tube moves upward due to the relative force of the water pressure, and the adjusting rod is lowered due to the transmission engagement of the teeth. At the same time, the driving rod and the adjusting plate are again engaged with the teeth to make the adjusting plate rise, compressing the first elastic member, thereby increasing the elastic capacity of the first elastic key, and then extending the telescopic tube from the sleeve, thereby reducing the distance between the telescopic tube and the sediment, thereby avoiding the increase in the distance between the telescopic tube and the sediment and causing a decrease in the sediment treatment effect.

[0023] 3. After the adjustment plate moves to the highest position, the adjustment plate contacts the top block, so that the position of the top plate relative to the limit plate is fixed, so that the adjustment plate can be lowered. This effect is repeated and repeated to avoid the situation where the telescopic tube can only move in one direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the sand flushing device of the present invention.

[0025] Figure 2 It is a schematic cross-sectional structural diagram of the water hammer pump of the present invention.

[0026] Figure 3 It is a structural schematic diagram of the support frame of the present invention.

[0027] Figure 4 It is a schematic cross-sectional structural diagram of the injection unit of the present invention.

[0028] Figure 5 It is a structural schematic diagram of the adjustment sleeve and the adjustment rod used in conjunction with each other in the present invention.

[0029] Figure 6 It is a schematic diagram of the cross-sectional structure of the adjustment sleeve of the present invention.

[0030] Figure 7 It is a schematic diagram of the matching structure of the driving rod and the one-way gear of the present invention.

[0031] Figure 8 It is a structural schematic diagram of the adjustment plate of the present invention.

[0032] Figure 9 It is a structural schematic diagram of the adjustment plate and the adjustment rod used in conjunction with each other in the present invention.

[0033] Figure 10It is a structural diagram of the top plate and the limiting plate used in conjunction with each other in the present invention.

[0034] Figure 11 It is a structural schematic diagram of the mounting plate and guide rod used in conjunction with each other in the present invention.

[0035] Reference numerals:

[0036] 100, hydraulic pump; 200, hydrocyclone; 300, venturi ejector; 400, dam; 500, injection unit; 600, support frame; 110, pressure pipe; 120, water pressure regulating valve; 210, overflow pipe; 220, water diversion pipe; 101, pressure chamber; 102, water passage chamber; 103, drainage chamber; 104, first valve body; 105, second valve body; 510, fixing box; 520, injection pipe; 530, adjustment sleeve; 540, adjustment rod; 550, transmission gear; 511, mounting groove; 512, top plate; 513, pressure block ; 514, limit block; 515, mounting plate; 516, guide through hole; 517, positioning ring groove; 521, sleeve; 522, telescopic tube; 523, first tooth groove; 531, adjustment plate; 532, limit plate; 533, slide groove; 534, positioning groove; 535, second elastic member; 536, top block; 537, adjustment groove; 541, second tooth groove; 542, drive rod; 543, first elastic member; 544, third tooth groove; 501, through hole; 502, one-way gear; 503, positioning block; 504, fourth tooth groove; 610, guide rod; 611, positioning block. DETAILED DESCRIPTION

[0037] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0038] like Figure 1 and Figure 2As shown, a jet sand flushing device based on a water hammer pump and a hydrocyclone includes a water hammer pump 100, a hydrocyclone 200 and a venturi ejector 300. The hydrocyclone 200 can separate water and sand in response to water flows in different water diversion pipes 220 and can be directly used for the operation of the water hammer pump 100, thereby avoiding the influence of the presence of sediment on the tightness of the pressure valve and the drain valve. The venturi ejector 300 can increase the pressure of the water flow to better impact the sand body. The water hammer pump 100 includes a pressure chamber 101, a water passage chamber 102 and a drainage chamber 103 arranged in sequence. There is a A pressure pipe 110 is provided, communicating with the pressure chamber 101 and the venturi ejector 300, respectively. An overflow pipe 210 is provided between the water passage chamber 102 and the hydrocyclone 200, communicating with the water passage chamber 102 and the hydrocyclone 200, respectively. A water diversion pipe 220 is provided between the hydrocyclone 200 and the dam 400. A first valve body 104 is provided between the pressure chamber 101 and the water passage chamber 102. The first valve body 104 is a first pressure regulating valve. The pressure regulating valve is a well-known technical structure and will not be described in detail here. The pressure valve can adjust the liquid flow rate and control the pressure of the water flow in the pressure chamber 101. A second valve body 105 is provided between the water passage chamber 102 and the drainage chamber 103. The second valve body 105 is a second pressure regulating valve. The pressure regulating valve is a well-known technical structure and will not be described in detail here. The second pressure regulating valve can adjust the liquid flow rate and can stop the drainage chamber 103. A water pressure regulating valve 120 is installed on the pressure pipe 110 .

[0039] The ram pump 100 and the hydrocyclone 200 are arranged outside the dam 400. The height of the ram pump 100 is smaller than that of the hydrocyclone 200, which facilitates the water flow to fall from top to bottom by its own weight. The venturi ejector 300 is located inside the dam 400. The inner side of the dam 400 is provided with an injection unit 500, and the injection unit 500 is arranged at the outlet of the venturi ejector 300.

[0040] Specifically, the water hammer effect principle is used to concentrate the energy of the outflowing water from the reservoir and generate a high-pressure water flow. The high-pressure water flow is intermittently ejected from the injection unit 500, so that the utilized energy is the kinetic energy of the water converted from the gravitational potential energy of the outflowing water from the reservoir, which makes the energy conversion efficiency high. Compared with mechanical dredging, there is no waste discharge and it has the effect of low carbon and environmental protection.

[0041] like Figure 3 、 Figure 4 and Figure 11As shown, a support frame 600 is fixedly installed on one side of the dam 400. The support frame 600 has multiple support frames and is arranged at equal intervals along the width direction of the dam 400. The injection unit 500 includes a fixed box 510, which is installed on the support frame 600. In detail, a mounting plate 515 is fixedly connected to the outer side of the fixed box 510. The support frame 600 includes two support plates. The fixed box 510 is located between two adjacent support plates. Two guide rods 610 symmetrically arranged on both sides of the upper side of the support frame 600 are rotatably installed. Positioning blocks 611 are fixedly connected on both sides of one end of the guide rods 610. Guide holes 516 corresponding to the guide rods 610 are provided on both sides of the mounting plate 515. A positioning ring groove 517 is provided inside the guide through hole 516. The positioning ring groove 517 is used in conjunction with the positioning block 611 to fix the position of the fixed box 510. The positioning ring groove 517 is spirally arranged to better fix the fixed box 510 and prevent the fixed box 510 and the support plate from shaking. The fixed box 510 is equipped with a spray pipe 520, which extends through the upper and lower ends of the fixed box 510. Specifically, the spray pipe 520 includes a sleeve 521 and a telescopic tube 522. A telescopic sleeve is provided between the end of the telescopic tube 522, away from the sleeve 521, and the fixed box 510 to ensure a tight seal between the telescopic tube 522 and the fixed box 510 and prevent liquid from seeping into the fixed box 510. The telescopic tube 522 slidably fits within the sleeve 521, and first grooves 523 are defined on both sides of the telescopic tube 522. Adjustment assemblies are provided on both sides of the spray pipe 520 to adjust the distance between the spray pipe 520 and the sand.

[0042] Specifically, the position of the spray unit 500 can be limited by the cooperation among the support frame 600 , the guide rod 610 and the mounting plate 515 , so that the spray unit 500 can be installed or removed.

[0043] like Figures 4 to 7 As shown, the adjustment assembly includes an adjustment sleeve 530, an adjustment rod 540 and a transmission gear 550. The adjustment rod 540 is located between the telescopic tube 522 and the transmission gear 550. The adjustment rod 540 slides up and down in the adjustment sleeve 530. A second tooth groove 541 is provided on the side of the adjustment rod 540 facing the transmission gear 550.

[0044] The adjusting sleeve 530 is provided with an adjusting plate 531 for sliding inside. A first elastic member 543 is provided between the adjusting plate 531 and the adjusting rod 540. The first elastic member 543 can be a spring. Positioning blocks 503 are provided on both sides of the adjusting plate 531. The positioning blocks 503 are in the shape of a right triangle. The inclined surface of the positioning blocks 503 is located at the top to facilitate the rising of the adjusting plate 531. A through hole 501 is provided on the adjusting plate 531. Both sides of the adjusting plate 531 are fixedly connected with a through hole 501. The corresponding positioning block 503 has a fourth tooth groove 504 formed on one side of the through hole 501. A one-way gear 502 is rotatably mounted on the inner wall of the adjustment sleeve 530 and meshes with the fourth tooth groove 504. A drive rod 542 is hingedly provided below the adjustment rod 540. Specifically, a hinge seat is fixedly connected below the adjustment rod 540. The drive rod 542 is mounted on the hinge shaft of the hinge seat. A torsion spring is fixedly connected between the hinge shaft and the drive rod 542, and the torsion spring can automatically reset the drive rod 542. The drive rod 542 has a third tooth groove 544 meshing with the one-way gear 502. Positioning assemblies are provided on both sides of the adjustment plate 531 to define the position of the adjustment plate 531.

[0045] like Figures 7 to 9 As shown, the positioning assembly includes a limit plate 532 that is elastically slidably disposed within the adjustment sleeve 530. Specifically, a sliding groove 533 is defined within the adjustment sleeve 530, and the limit plate 532 is positioned within the sliding groove 533. A second elastic member 535, which can be a spring, is fixedly connected between the limit plate 532 and the sliding groove 533. The second elastic member 535 can be a spring. The limit plate 532 is flush with the sliding groove 533, and the sliding groove 533 can limit the plate 532 to prevent it from affecting the sliding of the adjustment plate 531 within the adjustment sleeve 530. A plurality of adjustment slots 537 are defined on the side of the limit plate 532 that faces the adjustment plate 531. The plurality of adjustment slots 537 are spaced apart along the length of the limit plate 532. A triangular top block 536 is provided on the upper end of the limit plate 532 that faces the adjustment plate 531. The top block 536 is used in conjunction with the adjustment plate 531.

[0046] Specifically, after the telescopic tube 522 sprays water, the telescopic tube 522 moves upward due to the relative force of the water pressure, and the adjusting rod 540 is lowered through the transmission engagement of the teeth. At the same time, the driving rod 542 and the adjusting plate 531 are again driven by the transmission engagement of the teeth to make the adjusting plate 531 rise, compressing the first elastic member 543, so that the elastic capacity of the first elastic key is increased, and then the telescopic tube 522 is extended from the sleeve 521, thereby reducing the distance between the telescopic tube 522 and the mud and sand, and avoiding the increase in the distance between the telescopic tube 522 and the mud and sand, which leads to a decrease in the effect of mud and sand treatment.

[0047] like Figure 10As shown, the bottom of the inner cavity of the fixed box 510 is provided with a locking unit for adjusting the position of the limit plate 532. The locking unit includes a top plate 512 that slides elastically on the fixed box 510. The upper ends of the top plate 512 are respectively fixedly connected to a pressure block 513 and a limit block 514. The pressure block 513 is located below the adjustment plate 531. The limit plate 532 is provided with a positioning groove 534 below, which cooperates with the limit block 514. In detail, the fixed box 510 is provided with a mounting groove 511, and the top plate 512 slides in the mounting groove 511. A spring is provided between the mounting groove 511 and the top plate 512 to facilitate the automatic reset of the top plate 512 after use.

[0048] Specifically, after the adjustment plate 531 moves to the highest position, the adjustment plate 531 contacts the top block 536, so that the position of the top plate 512 relative to the limit plate 532 is fixed, so that the adjustment plate 531 can be dropped down, and this effect is repeated, and the cycle is repeated to avoid the situation where the telescopic tube 522 can only move in one direction.

[0049] A jet sand flushing method based on a water hammer pump and a hydrocyclone comprises the following steps:

[0050] Step A: Water in the dam 400 flows through the water diversion pipe 220 into the hydrocyclone 200. The hydrocyclone 200 separates the solid and liquid in the water and sediment. The sediment inside the hydrocyclone 200 is discharged to the downstream of the reservoir. The clean water flows through the overflow pipe 210 into the water passage chamber 102 and then enters the drainage chamber through the drain valve for discharge.

[0051] Step B: The liquid in the water passage chamber 102 flows toward the pressure chamber 101 and the drainage chamber 103 respectively. At this time, the water flow velocity increases under the action of water pressure, causing the second valve body 105 to be gradually passively closed. The water hammer effect stimulates the high-pressure water flow, which in turn pushes the first valve body 104 to open. The high-pressure water flows into the pressure chamber 101. The outlet pressure regulating valve adjusts the pressure of the high-pressure water flow and stabilizes the flow rate of the discharged water.

[0052] Step C: The venturi ejector 300 outputs a high-pressure sand-flushing water flow into the reservoir water body, which enters the ejector pipe 520. The ejector pipe 520 outlet is close to the sediment accumulated on the reservoir riverbed. The high-pressure water impacts the sediment accumulated on the reservoir riverbed, causing the sediment to be lifted up and suspended. The washed up sediment is mainly discharged to the downstream river channel through the reservoir's own sediment discharge facilities.

[0053] In the process of spraying water from the spray pipe 520, after the telescopic tube 522 sprays water pressure outward, the telescopic tube 522 will have a recoil upward force, and the telescopic tube 522 will enter the sleeve 521. The telescopic tube 522 drives the adjustment rod 540 to rise under the action of the transmission gear 550, the first tooth groove 523 and the second tooth groove 541. At the same time, the driving rod 542 rises with the adjustment rod 540 and drives the adjustment plate 531 under the action of the one-way gear 502, the third tooth groove 544 and the fourth tooth groove 504. The first elastic member 543 is then compressed by the first elastic member 543, and the positioning block 503 moves along with the adjusting plate 531. When the positioning block 503 moves from one adjusting slot 537 to another, it pushes the limiting plate 532 to move, causing the second elastic member 535 to be compressed. After the adjusting plate 531 has moved, the triangular shape of the positioning block 503 and the cooperation of the adjusting slots 537 limit the position of the adjusting plate 531.

[0054] At this time, after the adjustment plate 531 rises, the elastic capacity of the first elastic key increases. During the period when the telescopic tube 522 stops spraying water, the first elastic member 543 returns to its original position and pushes the adjustment rod 540 to rise. The driving rod 542 rises along with the adjustment rod 540. Due to the unidirectional rotation of the one-way gear 502, the driving rod 542 swings toward the side away from the one-way gear 502, releasing the matching relationship between the driving rod 542 and the one-way gear 502. At this time, the position of the adjustment plate 531 matching the positioning block 503 and the adjustment slot 537 remains unchanged, and the adjustment plate 531 repeats the above operation and continues to rise.

[0055] When the adjusting plate 531 contacts the top block 536, the fiberboard squeezes the top plate 512 downward, so that the positioning groove 534 corresponds to the limit block 514, thereby fixing the position of the limit plate 532. At this time, the limit plate 532 releases the position limit of the adjusting plate 531, so that the adjusting plate 531 moves downward by its own weight. When the adjusting plate 531 contacts the pressing block 513, the top plate 512 is squeezed and moved downward, and the limit block 514 is separated from the positioning groove 534, so that the limit plate 532 clamps the adjusting plate 531 again. The above steps are repeated until the desilting work of the reservoir is completed.

[0056] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying 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 should not be understood as limiting the present invention.

[0057] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two or three, unless otherwise specifically defined.

[0058] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A jet sand flushing device based on a water hammer pump and a hydrocyclone, characterized in that: The invention comprises a water hammer pump (100), a hydrocyclone (200) and a venturi ejector (300), wherein the water hammer pump (100) comprises a pressure chamber (101), a water passage chamber (102) and a drainage chamber (103) arranged in sequence, a pressure pipe (110) being provided between the pressure chamber (101) and the venturi ejector (300), an overflow pipe (210) being provided between the water passage chamber (102) and the hydrocyclone (200), a water diversion pipe (220) being provided between the hydrocyclone (200) and the dam (400), a first valve body (104) being provided between the pressure chamber (101) and the water passage chamber (102), and a second valve body (105) being provided between the water passage chamber (102) and the drainage chamber (103); The water hammer pump (100) and the hydrocyclone (200) are arranged outside the dam (400), the venturi ejector (300) is located inside the dam (400), and an injection unit (500) is provided inside the dam (400), and the injection unit (500) is arranged at the outlet of the venturi ejector (300); A support frame (600) is fixedly mounted on one side of the dam (400); the spray unit (500) comprises a fixed box (510), the fixed box (510) is mounted on the support frame (600), a spray pipe (520) is provided inside the fixed box (510), and adjustment components are provided on both sides of the spray pipe (520), and the adjustment components are used to adjust the distance between the spray pipe (520) and the sand body; The injection pipe (520) comprises a sleeve (521) and a telescopic tube (522), the telescopic tube (522) is slidably fitted in the sleeve (521), and first tooth grooves (523) are formed on both sides of the telescopic tube (522); The adjustment assembly comprises an adjustment sleeve (530), an adjustment rod (540) and a transmission gear (550); the adjustment rod (540) is located between the telescopic tube (522) and the transmission gear (550); the adjustment rod (540) slides up and down in the adjustment sleeve (530); and a second tooth groove (541) is formed on a side of the adjustment rod (540) facing the transmission gear (550); An adjusting plate (531) is slidably provided inside the adjusting sleeve (530), a first elastic member (543) is provided between the adjusting plate (531) and the adjusting rod (540), positioning blocks (503) are provided on both sides of the adjusting plate (531), a through hole (501) is provided on the adjusting plate (531), and positioning blocks (503) corresponding to the through hole (501) are fixedly connected on both sides of the adjusting plate (531), and one side of the through hole (501) is provided. A fourth tooth groove (504) is provided, a one-way gear (502) is rotatably mounted on the inner wall of the adjustment sleeve (530) and meshes with the fourth tooth groove (504), a driving rod (542) is hingedly provided below the adjustment rod (540), and a third tooth groove (544) is provided on the driving rod (542) and meshes with the one-way gear (502), and positioning components are provided on both sides of the adjustment plate (531), and the positioning components are used to limit the position of the adjustment plate (531).

2. The jet sand flushing device based on a water hammer pump and a hydrocyclone according to claim 1 is characterized in that: The positioning assembly comprises a limiting plate (532) elastically arranged inside the adjusting sleeve (530) in a sliding manner, a plurality of adjusting slots (537) being provided on a side of the limiting plate (532) facing the adjusting plate (531), and a top block (536) being provided on an upper end of the limiting plate (532) facing the adjusting plate (531), the top block (536) being triangular in shape and being used in conjunction with the adjusting plate (531).

3. The jet sand flushing device based on a water hammer pump and a hydrocyclone according to claim 2 is characterized in that: A locking unit for adjusting the position of the limiting plate (532) is provided at the bottom of the inner cavity of the fixed box (510), and the locking unit includes a top plate (512) elastically sliding on the fixed box (510), and a pressure block (513) and a limiting block (514) are fixedly connected to the upper ends of the top plate (512), respectively, and the pressure block (513) is located below the adjustment plate (531). A positioning groove (534) is provided below the limiting plate (532), and the positioning groove (534) is used in conjunction with the limiting block (514).

4. The jet sand flushing device based on a water hammer pump and a hydrocyclone according to claim 1 is characterized in that: The outer side of the fixed box (510) is fixedly connected to a mounting plate (515), the support frame (600) includes two support plates, and two guide rods (610) symmetrically arranged on the upper sides of the support frame (600) are rotatably mounted, and positioning blocks (611) are fixedly connected to both sides of one end of the guide rod (610), and guide through holes (516) corresponding to the guide rod (610) are provided on both sides of the mounting plate (515), and a positioning ring groove (517) is provided inside the guide through hole (516), and the positioning ring groove (517) is used in conjunction with the positioning block (611).

5. The jet sand flushing device based on a water hammer pump and a hydrocyclone according to claim 4 is characterized in that: The positioning ring groove (517) is spirally arranged.

6. A jet sand flushing method based on a water hammer pump and a hydrocyclone, using the jet sand flushing device based on a water hammer pump and a hydrocyclone according to claim 1, characterized in that: The following steps are involved: Step A: The water flow in the dam (400) enters the hydrocyclone (200) through the water diversion pipe (220), the hydrocyclone (200) separates the solid and liquid in the liquid, and the separated liquid enters the water passage cavity (102) through the overflow pipe (210); Step B: the liquid in the water passage chamber (102) flows toward the pressure chamber (101) and the drainage chamber (103) respectively. Under the action of the water pressure, the second valve body (105) is gradually closed, and the first valve body (104) is opened by utilizing the water hammer effect. Step C: The liquid is ejected from the ejection unit (500) through the pressure pipe (110) and the venturi ejector (300), and the ejected liquid is used to impact the sand body.

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