Jet flow sand flushing device and method based on hydraulic ram and hydrocyclone

Abstract

The invention relates to the technical field of sand flushing devices, and particularly discloses a jet flow sand flushing device and method based on a hydraulic ram pump and a hydrocyclone, the jet flow sand flushing device comprises the hydraulic ram pump, the hydrocyclone and a Venturi jet device, the hydraulic ram pump comprises a pressure cavity, a water passing cavity and a water draining cavity which are sequentially arranged, and a pressure pipe is arranged between the pressure cavity and the Venturi jet device; an overflow pipe is arranged between the water passing cavity and the hydrocyclone, and a water diversion pipe is arranged between the hydrocyclone and the dam; a spraying unit is arranged on the inner side of the dam, and the spraying unit is arranged at an outlet of the Venturi jet device; according to the water hammer effect principle, energy of reservoir outlet water flow is concentrated, high-pressure water flow is generated, the high-pressure water flow is intermittently sprayed out of the spraying unit, the utilized energy is water flow kinetic energy converted from gravitational potential energy of the reservoir outlet water flow, the energy conversion efficiency is high, and compared with mechanical desilting, no waste is discharged, and energy is saved. The low-carbon and environment-friendly effects are realized.

Description

Technical Field

[0001] The 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] When building a reservoir on a river with a lot of sediment, it is inevitable that the reservoir will be silted up. The siltation of the reservoir will shorten the service life of the reservoir, reduce the reservoir's regulation and storage capacity, and affect the comprehensive benefits of power generation. According to incomplete statistics, the global storage capacity loss caused by siltation is 0.5%~1.0% each year, and in my country it is as high as 2.3%. In recent years, climate change has led to frequent disasters such as droughts and floods, and the role of reservoirs in flood control and drought relief has become more prominent. As my country's hydropower construction has entered the post-engineering era, new dam sites available for reservoir construction are almost exhausted. Maintaining the effective storage capacity of the built reservoir and restoring the silted storage capacity has become an important way. On the other hand, the operation of hydropower projects on silt-rich rivers also faces problems such as silt wear and cavitation damage of flow components. The silt wear of the turbine will lead to the loss of material of the flow components, changes in the flow conditions and characteristics, and reduce the efficiency and stability of the unit. In severe cases, it may even affect the safe operation of the power station. 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 sand removal can be divided into three categories according to the working principle: the first category is the mud bucket type, which relies on the mechanical force of the dredger to break the soil and transport. This type of dredger can only unload the silt into the mud tank of the dredger or the nearby mud barge, and cannot transport the silt over a long distance, so the efficiency is low. The second type is the suction type, which relies on the mechanical force of the dredger to break the soil and the mud pump to transport the silt. This type of dredger has a mud pump and can transport mud over a long distance, but due to the limitation of the suction range, the underwater excavation depth is small. The long-arm suction (or bucket wheel) dredger is a dredger that lengthens the suction (or bucket wheel) arm to achieve the effect of increasing the digging depth. The third type is the flushing suction type, which uses high-pressure water jets to break the soil and uses jet pumps, submersible pumps, gas lift devices, etc. to suck and transport mud. It has a large dredging depth and is 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 canal sand removal device, which includes a sand suction box, a stirring device, a sand removal device and a power device. By setting a stirring device, an impeller or an electric motor is used as a driving force to drive the stirring device 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 allows 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 the related art 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 realize efficient flushing.

[0006] A jet sand flushing device based on a water hammer pump and a hydrocyclone of the present invention comprises 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, a water diversion pipe is arranged between the hydrocyclone and the dam, a first valve body is arranged between the pressure chamber and the water passage chamber, and a second valve body is arranged between the water passage chamber and the drainage chamber; 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.

[0007] 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. An injection pipe is arranged inside the fixed box, and adjustment components are arranged on both sides of the injection pipe, and the adjustment components are used to adjust the distance between the injection pipe and the sand body.

[0008] Preferably, the injection pipe comprises 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.

[0009] 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 formed on the side of the adjustment rod facing the transmission gear.

[0010] Preferably, an adjustment plate is slidably 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, and 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.

[0011] 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 grooves on the side facing the adjustment plate. The upper end of the limit plate is provided with a top block on the side facing the adjustment plate, and the top block is triangular and is used in conjunction with the adjustment plate.

[0012] 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 two ends of the upper side of the top plate are respectively fixedly connected with a pressure block and a limit block, and the pressure block is located below the adjustment plate, and a positioning groove is opened below the limit plate, and the positioning groove is used in conjunction with the limit block.

[0013] Preferably, a mounting plate is fixedly connected to the outer side of the fixed box, the support frame includes two support plates, two guide rods symmetrically arranged on the upper sides of the support frame are rotatably installed, and positioning blocks are fixedly connected to both sides of one end of the guide rods, and guide through holes corresponding to the guide rods are opened on both sides of the mounting plate, and a positioning ring groove is opened inside the guide through hole, and the positioning ring groove is used in conjunction with the positioning block.

[0014] Preferably, the positioning ring groove is spirally arranged.

[0015] A jet sand flushing method based on a water hammer pump and a hydrocyclone comprises the following steps: Step A: The water flow in the dam enters the hydrocyclone through the water diversion pipe, and the hydrocyclone separates the solid and liquid in the liquid. The separated liquid enters the water passage cavity from the overflow pipe; Step B: the liquid in the water passage cavity flows toward the pressure cavity and the drainage cavity respectively, the second valve body is gradually closed under the action of water pressure, and the first valve body is opened by the water hammer effect; Step C: 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.

[0016] Beneficial effects: 1. The water hammer effect principle is used to concentrate the energy of the outflow of the reservoir and generate a 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 of the reservoir, so that the energy conversion efficiency is high. Compared with mechanical dredging, there is no waste discharge and it has a low-carbon and environmentally friendly effect.

[0017] 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 through 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, so that the elastic capacity of the first elastic key is increased, and then the telescopic tube is extended from the sleeve, thereby reducing the distance between the telescopic tube and the sediment, and avoiding the increase of the distance between the telescopic tube and the sediment, which leads to a decrease in the sediment treatment effect.

[0018] 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 to the limit plate is fixed, so that the adjustment plate can be dropped down, and this effect is repeated, and the cycle is repeated to avoid the situation where the telescopic tube can only move in one direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the sand flushing device of the present invention.

[0020] Figure 2 It is a schematic diagram of the cross-sectional structure of the water hammer pump of the present invention.

[0021] Figure 3 It is a structural schematic diagram of the support frame of the present invention.

[0022] Figure 4 It is a schematic diagram of the cross-sectional structure of the injection unit of the present invention.

[0023] Figure 5 It is a structural schematic diagram of the adjustment sleeve and the adjustment rod of the present invention in cooperation with each other.

[0024] Figure 6 It is a schematic diagram of the cross-sectional structure of the adjusting sleeve of the present invention.

[0025] Figure 7 It is a schematic diagram of the matching structure of the driving rod and the one-way gear of the present invention.

[0026] Figure 8 It is a structural schematic diagram of the adjustment plate of the present invention.

[0027] Fig. 9 It is a structural schematic diagram of the adjustment plate and the adjustment rod of the present invention used in combination.

[0028] Fig.10 It is a structural schematic diagram of the top plate and the limit plate used in combination with each other in the present invention.

[0029] Fig.11 It is a structural schematic diagram of the mounting plate and the guide rod used in conjunction with each other in the present invention.

[0030] Reference numerals: 100, water hammer 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, fixed box; 520, injection pipe; 530, adjustment sleeve; 540, adjustment rod; 550, transmission gear; 511, installation groove; 512, top plate; 513, pressing 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

[0031] 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.

[0032] 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 existence of silt 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 drain chamber 103 arranged in sequence, and a pressure chamber 101 is provided between the pressure chamber 101 and the venturi ejector 300. The pressure pipe 110 is connected to the pressure chamber 101 and the venturi ejector 300 respectively. An overflow pipe 210 is provided between the water-passing chamber 102 and the hydrocyclone 200 and is connected to the water-passing 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-passing chamber 102. The first valve body 104 is a first pressure regulating valve. The pressure regulating valve is an existing mature technical structure and will not be described in detail here. The pressure valve can adjust the size of the liquid flow and control the pressure of the water flow in the pressure chamber 101. A second valve body 105 is provided between the water-passing chamber 102 and the drainage chamber 103. The second valve body 105 is a second pressure regulating valve. The pressure regulating valve is an existing mature technical structure and will not be described in detail here. The second pressure regulating valve can adjust the size of the liquid flow and stop the drainage chamber 103. A water pressure regulating valve 120 is installed on the pressure pipe 110 .

[0033] The ram pump 100 and the hydrocyclone 200 are arranged outside the dam 400. The height of the ram pump 100 is less than that of the hydrocyclone 200, so that the water flow falls 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.

[0034] 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, thereby achieving high energy conversion efficiency. Compared with mechanical dredging, there is no waste discharge and it has the effect of low carbon and environmental protection.

[0035] like Figure 3 , Figure 4 and Fig.11As shown, a support frame 600 is fixedly installed on one side of the dam 400, and the support frame 600 has multiple support frames 510 that are arranged at equal intervals along the width direction of the dam 400. The injection unit 500 includes a fixed box 510, and the fixed box 510 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, and the support frame 600 includes two support plates. The fixed box 510 is located between two adjacent support plates, and two guide rods 610 symmetrically arranged are rotatably installed on both sides of the upper side of the support frame 600. Positioning blocks 611 are fixedly connected on both sides of one end of the guide rods 610. Guide through holes 516 corresponding to the guide rods 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. 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 provided with a spray pipe 520, and the two ends of the spray pipe 520 respectively penetrate the upper and lower ends of the fixed box 510. In detail, the spray pipe 520 includes a sleeve 521 and a telescopic pipe 522. A telescopic sleeve is provided between the end of the telescopic pipe 522 away from the sleeve 521 and the fixed box 510 to ensure the sealing between the telescopic pipe 522 and the fixed box 510 and prevent liquid from penetrating into the fixed box 510. The telescopic pipe 522 is slidably fitted in the sleeve 521, and the two sides of the telescopic pipe 522 are provided with first tooth grooves 523. 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.

[0036] 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 as to facilitate the installation or removal of the spray unit 500 .

[0037] 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.

[0038] 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 form 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, a fourth tooth groove 504 is provided on one side of the through hole 501, a one-way gear 502 is rotatably installed on the inner wall of the adjustment sleeve 530 and meshes with the fourth tooth groove 504, and a driving rod 542 is hingedly provided below the adjustment rod 540. Specifically, a hinge seat is fixedly connected below the adjustment rod 540, and the driving rod 542 is installed on the hinge shaft of the hinge seat. A torsion spring is fixedly connected between the hinge shaft and the driving rod 542, and the torsion spring can automatically reset the driving rod 542. A third tooth groove 544 meshing with the one-way gear 502 is provided on the driving rod 542, 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.

[0039] like Figures 7 to 9 As shown, the positioning assembly includes a limit plate 532 that is elastically arranged inside the adjustment sleeve 530. Specifically, a slide groove 533 is provided inside the adjustment sleeve 530, and the limit plate 532 is located inside the slide groove 533. A second elastic member 535 is fixedly connected between the limit plate 532 and the slide groove 533. The second elastic member 535 can be a spring. The limit plate 532 is flush with the slide groove 533. The slide groove 533 can limit the plate 532 to avoid affecting the sliding of the adjustment plate 531 in the adjustment sleeve 530. A plurality of adjustment grooves 537 are provided on the side of the limit plate 532 facing the adjustment plate 531. The plurality of adjustment grooves 537 are spaced apart along the length direction of the limit plate 532. A top block 536 is provided on the upper end of the limit plate 532 facing the side of the adjustment plate 531. The top block 536 is triangular and is used in conjunction with the adjustment plate 531.

[0040] 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 due to the transmission engagement between the teeth. At the same time, the driving rod 542 and the adjusting plate 531 are again driven to move the adjusting plate 531 upward by the transmission engagement between the teeth, compressing the first elastic member 543, thereby increasing the elastic capacity of the first elastic key, and then extending the telescopic tube 522 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.

[0041] like Fig.10As shown, a locking unit for adjusting the position of the limit 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 that slides elastically on the fixed box 510, and a pressure block 513 and a limit 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, and a positioning groove 534 is provided below the limit plate 532, and the positioning groove 534 is used in conjunction with the limit block 514. In detail, a mounting groove 511 is provided on the fixed box 510, and the top plate 512 slides in the mounting groove 511, and a spring is provided between the mounting groove 511 and the top plate 512, so that the top plate 512 can automatically reset after use.

[0042] 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 repeatedly, and this effect is achieved repeatedly to avoid the situation where the telescopic tube 522 can only move in one direction.

[0043] A jet sand flushing method based on a water hammer pump and a hydrocyclone comprises the following steps: Step A: The water flow in the dam 400 enters the hydrocyclone 200 through the water diversion pipe 220, and the hydrocyclone 200 separates the solid and liquid in the water and sand. The sediment inside the hydrocyclone 200 is discharged to the downstream of the reservoir, and the clean water enters the water passage chamber 102 through the overflow pipe 210, and then enters the drainage chamber through the drain valve and is discharged; 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, so that the second valve body 105 is gradually passively closed, and the water hammer effect stimulates the high-pressure water flow. The water hammer effect is used to push the first valve body 104 to open, and the high-pressure water flow enters the pressure chamber 101. The water outlet pressure regulating valve adjusts the pressure of the high-pressure water flow and stabilizes the flow rate of the discharged water flow; Step C: Output high-pressure sand flushing water flow to the reservoir water body through the Venturi ejector 300, and enter the ejection pipe 520. The ejection pipe 520 outlet is close to the sediment deposited on the riverbed of the reservoir. The high-pressure water body impacts the sediment deposited on the riverbed of the reservoir, so that the sediment is lifted up and suspended. The washed up sediment is mainly discharged to the downstream river channel through the reservoir's own sediment discharge facilities; In the process of spraying water by 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 adjusting rod 540 and the adjusting plate 531 move upwards to realize relative movement between the adjusting rod 540 and the adjusting plate 531. At this time, the first elastic member 543 is compressed by the force, and the positioning block 503 moves with the adjusting plate 531. When the positioning block 503 moves from one adjusting slot 537 to another adjusting slot 537, it pushes the limiting plate 532 to move, so that the second elastic member 535 is compressed. After the adjusting plate 531 moves, the position of the adjusting plate 531 is limited due to the triangular setting of the positioning block 503 and the cooperation of the adjusting slot 537. 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 is reset and pushes the adjustment rod 540 to rise. The driving rod 542 follows the adjustment rod 540 to rise. 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, and the matching relationship between the driving rod 542 and the one-way gear 502 is released. 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 will repeat the above operation and continue to rise. After 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 limitation 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 moves downward, and the limit block 514 separates from the positioning groove 534, so that the limit plate 532 clamps the adjusting plate 531 again, and the above steps are repeated until the desilting work of the reservoir is completed.

[0044] 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 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, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0045] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0046] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary 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) which are arranged in sequence, a pressure pipe (110) is arranged between the pressure chamber (101) and the venturi ejector (300), an overflow pipe (210) is arranged between the water passage chamber (102) and the hydrocyclone (200), a water diversion pipe (220) is arranged between the hydrocyclone (200) and the dam (400), a first valve body (104) is arranged between the pressure chamber (101) and the water passage chamber (102), and a second valve body (105) is arranged 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 arranged inside the dam (400), and the injection unit (500) is arranged at the outlet of the venturi ejector (300).

2. The jet sand flushing device based on a water hammer pump and a hydrocyclone according to claim 1 is characterized in that: A support frame (600) is fixedly mounted on one side of the dam (400); the injection unit (500) comprises a fixed box (510); the fixed box (510) is mounted on the support frame (600); an injection pipe (520) is arranged inside the fixed box (510); adjustment components are arranged on both sides of the injection pipe (520); the adjustment components are used to adjust the distance between the injection pipe (520) and the sand body.

3. The jet sand flushing device based on a water hammer pump and a hydrocyclone according to claim 2 is characterized in that: 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 provided on both sides of the telescopic tube (522).

4. The jet sand flushing device based on a water hammer pump and a hydrocyclone according to claim 3 is characterized in that: 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).

5. The jet sand flushing device based on a water hammer pump and a hydrocyclone according to claim 4 is characterized in that: An adjustment plate (531) is slidably disposed inside the adjustment sleeve (530), a first elastic member (543) is disposed between the adjustment plate (531) and the adjustment rod (540), positioning blocks (503) are disposed on both sides of the adjustment plate (531), a through hole (501) is formed on the adjustment plate (531), positioning blocks (503) corresponding to the through hole (501) are fixedly connected to both sides of the adjustment plate (531), and one side of the through hole (501) is formed 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) meshing with the one-way gear (502) is provided on the driving rod (542), 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).

6. The jet sand flushing device based on a water hammer pump and a hydrocyclone according to claim 5 is characterized in that: The positioning assembly comprises a limit plate (532) which is elastically arranged in a sliding manner inside the adjustment sleeve (530); a plurality of adjustment slots (537) are provided on a side of the limit plate (532) facing the adjustment plate (531); a top block (536) is provided on an upper end of the limit plate (532) facing the adjustment plate (531); the top block (536) is triangular in shape and is used in conjunction with the adjustment plate (531).

7. The jet sand flushing device based on a water hammer pump and a hydrocyclone according to claim 6 is characterized in that: A locking unit for adjusting the position of the limit plate (532) is provided at the bottom of the inner cavity of the fixed box (510), and the locking unit comprises a top plate (512) elastically sliding on the fixed box (510), and a pressure block (513) and a limit block (514) are respectively fixedly connected at both ends of the upper side of the top plate (512), and the pressure block (513) is located below the adjustment plate (531), and a positioning groove (534) is provided below the limit plate (532), and the positioning groove (534) is used in conjunction with the limit block (514).

8. The jet sand flushing device based on a water hammer pump and a hydrocyclone according to claim 2 is characterized in that: The outer side of the fixed box (510) is fixedly connected to a mounting plate (515), the support frame (600) comprises two support plates, two guide rods (610) symmetrically arranged on the upper sides of the support frame (600) are rotatably mounted, two sides of one end of the guide rod (610) are fixedly connected to positioning blocks (611), both sides of the mounting plate (515) are provided with guide through holes (516) corresponding to the guide rods (610), 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).

9. The jet sand flushing device based on a water hammer pump and a hydrocyclone according to claim 8 is characterized in that: The positioning ring groove (517) is spirally arranged.

10. A method for jet sand flushing 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 the liquid in the liquid, and the separated liquid enters the water passage chamber (102) through the overflow pipe (210); Step B: the liquid in the water passage cavity (102) flows toward the pressure cavity (101) and the drainage cavity (103) respectively, and the second valve body (105) is gradually closed under the action of the water pressure, 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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