Water conservancy and hydropower construction foundation pit drainage sediment separation device

Abstract

The invention relates to the technical field of water conservancy and hydropower, in particular to a water conservancy and hydropower construction foundation pit drainage sediment separation device. Comprising a buffer shell, a water inlet pipe and a water outlet pipe, the water absorption shell communicates with the other end of the buffer shell, and at least two side pipes are arranged on the water absorption shell in a radial penetrating mode; the filter screen is arranged at the water inlet end of the side pipe; the follow-up device is axially arranged in the side pipe in a sliding mode, and the front end of the follow-up device abuts against the filter screen; the pushing and pressing device comprises an energy storage assembly and an impact assembly which are arranged in the side pipe, and the impact assembly is detachably clamped with the rear end of the follow-up device; and the reset device is arranged at the rear end of the follow-up device. The problem that a traditional filter screen is prone to being blocked is effectively solved, impact force is accurately transmitted to the surface of the filter screen through mechanical transmission, and efficient removal of silt is achieved.

Description

Technical Field

[0001] This application relates to the field of water conservancy and hydropower technologies, and particularly to a device for separating sediment from the drainage of a foundation pit in water conservancy and hydropower construction. Background Art

[0002] During the construction of building projects, the drainage of foundation pits is a crucial link that directly affects the construction progress and project quality. The accumulated water in the foundation pit usually contains a large amount of impurities such as sediment, gravel, and construction waste. These impurities not only affect the drainage efficiency but may also damage the drainage equipment. Traditional foundation pit drainage solutions mainly rely on a pumping system equipped with a filter screen, attempting to block solid particles such as sediment in the water through the filter screen to protect the water pump and pipeline system.

[0003] However, the existing filter screen system has serious technical defects. During actual use, as the pumping operation progresses, a large amount of sediment and impurities will quickly accumulate on the surface of the filter screen, resulting in the blockage of the pores of the filter screen. This blockage phenomenon not only reduces the drainage efficiency but also often requires shutdown for cleaning, increasing the project cost and construction time. More troublesome is that frequent cleaning operations not only consume manpower and material resources but also affect the construction progress, especially in the rainy season or when the groundwater level is high, this problem is more prominent. Summary of the Invention

[0004] In view of this, the embodiments of this application provide a device for separating sediment from the drainage of a foundation pit in water conservancy and hydropower construction, which effectively solves the problem of easy blockage of traditional filter screens. Through mechanical transmission, the impact force is accurately transmitted to the surface of the filter screen, realizing the efficient removal of sediment.

[0005] The embodiments of this application provide a device for separating sediment from the drainage of a foundation pit in water conservancy and hydropower construction, including:

[0006] A buffer shell, with a water suction pipe for connecting a water pump provided at one end;

[0007] A water suction shell, communicating with the other end of the buffer shell, and at least two side pipes are radially penetrated through the water suction shell;

[0008] A filter screen, provided at the water inlet end of the side pipe;

[0009] A follower device, axially slidably arranged in the side pipe, and the front end of the follower device abuts against the filter screen;

[0010] A pressing device, including an energy storage component and an impact component arranged in the side pipe, and the impact component forms a detachable connection with the rear end of the follower device;

[0011] A reset device, provided at the rear end of the follower device;

[0012] The follow-up device is configured to: when the sediment accumulation on the filter screen increases the water flow resistance, it is pushed by the drainage pressure and moves backward along the side pipe, and compresses the energy storage component through the impact component to store energy;

[0013] The pushing device is configured to: when the follow-up device moves backward to a set position, the clamping is released, and the energy storage component releases energy to drive the impact component to rush forward, generating an impact vibration that is transmitted to the filter screen through the follow-up device;

[0014] The reset device is configured to: when the drainage pressure decreases or the drainage stops, drive the follow-up device to reset to the initial position and engage with the impact component.

[0015] In one embodiment, the impact component includes:

[0016] A push sleeve, one end away from the follow-up device abuts against the energy storage component, and the other end is radially hinged with an expansion rod that can be clamped with the follow-up device;

[0017] A counterweight block, which is slidably arranged in the inner cavity of the push sleeve;

[0018] An impact head, coaxially arranged at the front end of the counterweight block, and can act on the follow-up device with the impact vibration.

[0019] The push sleeve is configured to: when the energy storage component releases energy, drive the counterweight block and the impact head to rush forward synchronously, generating a first impact vibration, and the counterweight block and the impact head continue to slide due to inertia after the push sleeve stops, generating a second impact vibration.

[0020] In one embodiment, the impact component further includes a pull rod, the outer wall of the push sleeve is respectively hinged with one end of the expansion rod and the pull rod, an internal groove is formed along the length direction of the expansion rod on the inner side of the expansion rod, the end of the pull rod is slidably arranged in the internal groove, and the other end of the expansion rod forms a detachable connection with the rear end of the follow-up device.

[0021] The expansion rod is configured to: when the follow-up device moves backward, push the expansion rod to expand outward, drive the push sleeve to compress the energy storage component, and release the clamping after the expansion rod retracts to the critical position.

[0022] In one embodiment, a compression spring is arranged between the pull rod and the push sleeve, one end of the compression spring is fixed on the outer wall of the push sleeve, and the other end is connected to the inner wall of the pull rod.

[0023] The spring is configured to: after the expansion rod is released from the restraint, provide a reverse force to reset the pull rod to the initial state, so that the expansion rod opens to the initial angle and forms a detachable connection with the rear end of the follow-up device.

[0024] In one embodiment, a shrinkage ring is arranged on the inner wall of the side pipe, the shrinkage ring is located between the follow-up device and the energy storage component, the shrinkage ring is coaxially arranged with the push sleeve, and the inner diameter of the shrinkage ring is larger than the outer diameter of the push sleeve.

[0025] The contraction ring is configured to: when the expansion rod moves backward with the follower device, press the expansion rod to retract to the critical position.

[0026] In one embodiment, a tail frame is provided at one end of the side pipe away from the filter net. A guide sleeve is provided at the center of the tail frame. One end of the push sleeve away from the follower device is connected with a telescopic pipe. The end of the telescopic pipe is connected with a tail ring. The counterweight block and the impact head are axially provided with through grooves coaxial with the telescopic pipe. The telescopic pipe is slidably arranged in the guide sleeve, and the tail ring is in limit fit with the end face of the tail frame.

[0027] The telescopic pipe and the through groove are configured to: form an independent water flow channel during the forward impact process of the impact component, and reduce the influence of water resistance on the impact kinetic energy.

[0028] In one embodiment, the follower device includes a follower frame, a top ring, a vibration frame, side rods and a stop rod;

[0029] The follower frame and the top ring are connected by side rods. Side grooves for sliding cooperation with the side rods are axially provided on the inner wall of the side pipe. The vibration frame is arranged inside the top ring. A stop rod is radially provided on the inner side of the follower frame, and the stop rod can be clamped with the impact component.

[0030] In one embodiment, a transmission rod is provided on one side of the vibration frame facing the filter net, and the transmission rod abuts against the surface of the filter net.

[0031] In one embodiment, the filter net is fixed to the water inlet end of the side pipe through a threaded sleeve, and the inner wall of the threaded sleeve is threadedly connected with the outer wall of the water absorption shell.

[0032] In one embodiment, a bottom sleeve is provided at the bottom of the water absorption shell through threaded connection. A bottom block is installed in the bottom sleeve through internal threads, and a hexagonal groove is provided on the bottom surface of the bottom block.

[0033] The sediment separation device for the foundation pit drainage of water conservancy and hydropower construction in the embodiment of the present application includes a buffer shell, with a water suction pipe for connecting a water pump provided at one end; a water suction shell, which is communicated with the other end of the buffer shell, and at least two side pipes are radially penetrated through the water suction shell; a filter screen, which is arranged at the water inlet end of the side pipe; a follower device, which is axially slidably arranged in the side pipe, and the front end of the follower device abuts against the filter screen; a pushing device, which includes an energy storage component and an impact component arranged in the side pipe, and the impact component forms a detachable connection with the rear end of the follower device; a reset device, which is arranged at the rear end of the follower device; the follower device is configured to: when the sediment accumulation on the filter screen causes an increase in water flow resistance, it is pushed by the drainage pressure and moves backward along the side pipe, compressing the energy storage component through the impact component to store energy; the pushing device is configured to: when the follower device moves backward to a set position, the connection is released, and the energy storage component releases energy to drive the impact component to rush forward, generating an impact vibration that is transmitted to the filter screen through the follower device; the reset device is configured to: when the drainage pressure decreases or the drainage stops, drive the follower device to reset to the initial position and form a connection with the impact component. The effect of sediment shaking off is achieved. Through the combined design of the follower device and the pushing device, the cleaning process is triggered when the sediment blockage reaches a specific degree, effectively solving the problem that the traditional filter screen is easily blocked. Through mechanical transmission, the impact force is accurately transmitted to the surface of the filter screen, realizing the efficient removal of sediment. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0035] Figure 1 It is a schematic diagram of the overall structure of a sediment separation device for the foundation pit drainage of water conservancy and hydropower construction in the present application;

[0036] Figure 2 It is a schematic cross-sectional view of a sediment separation device for the foundation pit drainage of water conservancy and hydropower construction in the present application;

[0037] Figure 3 It is a schematic diagram of the structure of the side pipe in the present application;

[0038] Figure 4 It is a schematic cross-sectional view of the side pipe in the present application;

[0039] Figure 5 It is a schematic cross-sectional view of the telescopic pipe and the push sleeve in the present application;

[0040] Figure 6 It is a schematic diagram of the structure of the follower frame and the filter screen in the present application;

[0041] Figure 7 This is a schematic structural diagram of the expansion rod and the pull rod in the present application;

[0042] Figure 8 This is a schematic cross-sectional structure diagram of the side pipe and the extension frame in the present application;

[0043] Figure 9 This is a schematic structural diagram of the bottom block in the present application.

[0044] In the figure: 11, water suction pipe; 21, side pipe; 22, conical spring; 23, push sleeve; 24, counterweight block; 25, impact head; 26, follower frame; 27, top ring; 28, vibration frame; 29, transfer rod; 31, buffer housing; 32, water suction housing; 33, bottom sleeve; 34, bottom block; 35, hexagonal groove; 210, side rod; 211, side groove; 212, filter screen; 213, tail frame; 214, guide sleeve; 215, telescopic pipe; 216, tail ring; 217, through groove; 218, fixing block; 219, expansion rod; 220, pull rod; 221, internal groove; 222, compression spring; 223, stop rod; 224, extension frame; 225, contraction ring; 226, threaded sleeve; 101, return spring. Specific embodiments

[0045] In the following description, for the purpose of illustration rather than limitation, specific details such as specific system structures and technologies are set forth in order to provide a thorough understanding of the embodiments of the present application. However, those skilled in the art should clearly understand that the present application can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid unnecessary details from hindering the description of the present application.

[0046] It should also be understood that the term "and / or" as used in the specification and claims of the present application refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0047] In addition, in the description of the specification and claims of the present application, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0048] References to "one embodiment" or "some embodiments" in the description of this application mean that a particular feature, structure, or characteristic described in connection with that embodiment is included in one or more embodiments of this application. Thus, statements such as "in one embodiment", "in some embodiments", "in other some embodiments", "in still other embodiments", etc., which appear at different places in this specification, do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized. The terms "comprising", "including", "having" and their variants all mean "including but not limited to", unless otherwise specifically emphasized.

[0049] Please refer to Figures 1 to 9 , a kind of water conservancy and hydropower construction foundation pit drainage sediment separation device provided by the embodiment of this application, includes:

[0050] A buffer shell 31, one end of which is provided with a water suction pipe 11 for connecting a water pump;

[0051] A water suction shell 32, which is communicated with the other end of the buffer shell 31, and at least two side pipes 21 are radially penetrated through the water suction shell 32;

[0052] A filter screen 212, which is arranged at the water inlet end of the side pipe 21;

[0053] A follower device, which is axially slidably arranged in the side pipe 21, and the front end of the follower device abuts against the filter screen 212;

[0054] A pushing device, which includes an energy storage component and an impact component arranged in the side pipe 21, and the impact component forms a detachable connection with the rear end of the follower device;

[0055] A reset device, which is arranged at the rear end of the follower device;

[0056] The follower device is configured to: when the sediment accumulation on the filter screen causes an increase in water flow resistance, it is pushed by the drainage pressure to move backward along the side pipe 21, and the energy storage component is compressed by the impact component to store energy;

[0057] The pushing device is configured to: when the follower device moves backward to a set position, the connection is released, and the energy storage component releases energy to drive the impact component to rush forward, generating an impact vibration that is transmitted to the filter screen 212 through the follower device;

[0058] The reset device is configured to: when the drainage pressure decreases or the drainage stops, drive the follower device to reset to the initial position and engage with the impact component.

[0059] In application, the water suction pipe 11 is arranged at the central position of the buffer shell 31. The water suction shell 32 is of a conical structure, the cross-section of its outer wall is polygonal, and 2 side pipes are arranged on each conical surface corresponding to each side.

[0060] In the embodiment of the present application, a three - level main structure framework of "buffer shell - water - absorbing shell - side pipe" is constructed, which completely covers the core functional modules of the sediment separation device. The linkage mechanism of the follower device and the pressing device innovatively converts the physical state of sediment accumulation into a mechanical displacement amount, uses the drainage pressure as the driving force to trigger the energy storage process, and realizes the adaptive matching of the blockage degree and the cleaning intensity. The introduction of the reset device forms a complete working cycle system, which realizes automatic operation through a mechanical structure rather than electronic control, ensuring reliability under harsh working conditions and avoiding the cost increase caused by a complex control system. The technical solution creatively solves the technical problem that the traditional filtration system requires manual intervention during the cleaning process through the mechanical constraint release mechanism of "detachable clamping".

[0061] The embodiment of the present application achieves the effect of sediment shaking off. Through the combined design of the side pipe and the conical spring, and the dual - impact mechanism of the push sleeve and the counterweight block, the cleaning process is triggered when the sediment blockage reaches a specific degree, effectively solving the problem that the traditional filter is prone to blockage. Through the mechanical transmission structure, through the cooperation of the vibration frame and the transmission rod, the impact force is accurately transmitted to the surface of the filter screen, realizing the efficient removal of sediment.

[0062] In terms of structural optimization, through the guiding design of the follower frame and the side rod, the stability of the impact process is ensured; the linkage mechanism of the expansion rod and the pull rod realizes the control of the impact force; the design of the telescopic pipe and the through - slot reduces the water resistance and improves the impact efficiency. The innovation of the whole mechanism lies in realizing the automatic conversion between filtration and cleaning, and it can work continuously without manual intervention. Through the combined design of the buffer shell and the water - absorbing shell, both the drainage efficiency is ensured and the later maintenance and cleaning are facilitated. This design not only significantly improves the foundation pit drainage efficiency but also reduces the equipment maintenance cost, providing a more reliable and efficient solution for the construction of water conservancy and hydropower projects.

[0063] In one embodiment, the impact assembly includes:

[0064] A push sleeve 23, one end far from the follower device abuts against the energy storage assembly, and the other end is radially hinged with an expansion rod 219 that can be clamped with the follower device;

[0065] A counterweight block 24, which is slidably arranged in the inner cavity of the push sleeve 23;

[0066] An impact head 25, coaxially arranged at the front end of the counterweight block 24, and can apply the impact vibration to the follower device.

[0067] The push sleeve 23 is configured to: drive the counterweight block 24 and the impact head 25 to synchronously rush forward when the energy storage assembly releases energy, generating the first impact vibration. The counterweight block 24 and the impact head 25 continue to slide due to inertia after the push sleeve 23 stops, generating the second impact vibration.

[0068] In the application, the energy storage component is a conical spring 22, and the diameter of the end away from the filter screen is larger than that of the end facing the filter screen. A limiting end face is provided at one end of the push sleeve 23 facing the conical spring 22, and the other end is designed with an opening to provide a channel for the counterweight 24 and the impact head 25 to slide out of the push sleeve 23. The diameter of the limiting end face of the push sleeve 23 is larger than the diameter of the small end of the conical spring 22, so as to compress the conical spring 22 to store energy. The diameter of the counterweight 24 is larger than that of the impact head 25, and the two are coaxially arranged.

[0069] In the structural design of the impact component in the embodiment of the present application, the nested sliding connection between the push sleeve and the counterweight breaks through the limitations of the traditional single impact mode. By setting an independent movement space for the counterweight in the push sleeve and utilizing the inertial effect to generate a secondary impact effect, two consecutive impact vibrations can be formed during a single energy release process. This impact energy superposition mechanism significantly improves the sediment stripping efficiency. Especially when dealing with sediment with high viscosity or severe hardening, the superposition effect of the vibration waves generated by the double impact can effectively destroy the attachment state between the sediment and the filter screen. The radial hinge design between the push sleeve and the expansion rod in the structure provides a reliable force transmission path for the subsequent mechanical trigger mechanism.

[0070] In one embodiment, the impact component further includes a pull rod 220. The outer wall of the push sleeve 23 is respectively hinged to one end of the expansion rod 219 and the pull rod 220. An internal groove 221 is opened along the length direction of the expansion rod 219 on the inner side of the expansion rod 219. The end of the pull rod 220 is slidably arranged in the internal groove 221, and the other end of the expansion rod 219 forms a detachable connection with the rear end of the follower device.

[0071] The expansion rod 219 is configured to: when the follower device moves backward, push the expansion rod 219 to expand outward, drive the push sleeve 23 to compress the energy storage component, and release the connection after the expansion rod 219 retracts to the critical position.

[0072] The matching design of the pull rod and the internal groove in the embodiment of the present application constructs a precise mechanical trigger system. The outward expansion movement of the expansion rod driven by the follower device realizes the precise proportional control of the displacement of the push sleeve and the compression amount of the energy storage component through the sliding constraint of the internal groove on the end of the pull rod. This structure converts linear displacement into rotational movement, which not only ensures the stability of the movement of the push sleeve during the energy storage stage but also accurately controls the energy release timing through the mechanical design of releasing the constraint at the critical position.

[0073] In one embodiment, a compression spring 222 is provided between the pull rod 220 and the push sleeve 23. One end of the compression spring 222 is fixed to the outer wall of the push sleeve 23, and the other end is connected to the inner wall of the pull rod 220.

[0074] The spring 222 is configured to provide a reverse force to reset the pull rod 220 to its initial state after the expansion rod 219 is released from its constraint, thereby opening the expansion rod 219 to its initial angle and forming a detachable engagement with the rear end of the follower device.

[0075] The embodiment of the present application adds a structural improvement of a compression spring 222 between the pull rod and the push sleeve, which effectively solves the reset problem of the mechanical trigger mechanism. The elastic effect of the compression spring not only provides a stable return driving force for the pull rod, but more importantly, by adjusting the stiffness of the compression spring, the opening angle of the expansion rod can be accurately controlled, thereby adapting to the cleaning needs of sediment of different particle sizes. This design ensures that the impact component can automatically return to the ready-to-trigger state after completing the energy release, realizing the self-sustaining working cycle of the device. At the same time, the buffering effect of the compression spring reduces the wear of mechanical components during the impact process, thereby extending the service life of the device.

[0076] In one embodiment, a shrink ring 225 is provided on the inner wall of the side tube 21 . The shrink ring 225 is located between the follower device and the energy storage assembly. The shrink ring 225 is coaxially arranged with the push sleeve 23 . The inner diameter of the shrink ring 225 is larger than the outer diameter of the push sleeve 23 .

[0077] The contraction ring 225 is configured to compress the expansion rod 219 to retract to a critical position when the expansion rod 219 moves backward with the follower device.

[0078] The setting of the contraction ring in the embodiment of the present application innovatively constructs a trigger threshold control mechanism. By precisely designing the geometric relationship between the inner diameter of the contraction ring and the movement trajectory of the expansion rod, the abstract "set position" is converted into a quantifiable mechanical structure parameter. While ensuring the trigger accuracy, this structure allows the device response threshold to be adjusted by replacing contraction rings with different inner diameters, so that the same basic structure can adapt to different working conditions. The coaxial design of the contraction ring and the push sleeve ensures the controllability of the movement trajectory of the expansion rod during the contraction process, avoiding the risk of mechanical jamming.

[0079] In one embodiment, a tail frame 213 is provided at the end of the side tube 21 away from the filter screen 212, a guide sleeve 214 is provided at the center of the tail frame 213, and a telescopic tube 215 is connected to the end of the push sleeve 23 away from the follower device, and the end of the telescopic tube 215 is connected to the tail ring 216. The counterweight block 24 and the impact head 25 are axially provided with a through groove 217 coaxial with the telescopic tube 215. The telescopic tube 215 is slidably set in the guide sleeve 214, and the tail ring 216 is limitedly matched with the end face of the tail frame 213.

[0080] The telescopic tube 215 and the through slot 217 are configured to form an independent water flow channel during the forward impact of the impact assembly, thereby reducing the effect of water resistance on the impact kinetic energy.

[0081] In the application, the telescopic tube 215 and the push sleeve 23 are integrated and coaxially arranged. The telescopic tube 215 is located inside the conical spring, and its displacement does not interfere with the energy storage of the conical spring. The outer diameter of the tail coil 216 is larger than the inner diameter of the guide sleeve 214, so as to realize the end limit of the guide sleeve 214.

[0082] The combined design of the telescopic tube and the through groove in the embodiment of the present application overcomes the industry problem that the fluid resistance affects the impact efficiency. By constructing an axially penetrating structure independent of the main water flow channel, a stable fluid channel is maintained during the movement of the impact component, significantly reducing the loss of water pressure on the impact kinetic energy. The cooperation between the guide sleeve and the tail frame not only plays a role in guiding the movement, but more importantly, through the limiting cooperation between the tail coil and the tail frame, the maximum stroke of the impact component is accurately controlled, ensuring the integrity and controllability of the energy release. While improving the impact efficiency, this structure maintains the normal operation of the drainage system.

[0083] In one embodiment, the follower device includes a follower frame 26, a top ring 27, a vibration frame 28, side rods 210 and a stop rod 223;

[0084] The follower frame 26 and the top ring 27 are connected by side rods 210. Along the axial direction, side grooves 211 for slidingly cooperating with the side rods 210 are provided on the inner wall of the side tube 21. The vibration frame 28 is arranged inside the top ring 27. A stop rod 223 is provided radially on the inner side of the follower frame 26, and the stop rod 223 can be clamped with the impact component.

[0085] In the application, there are multiple side rods 210 distributed radially. For example, there can be 4 side rods distributed at equal intervals with an angle of 90°. The side rods 210 are slidably arranged in the side grooves 211, so as to realize the axial sliding guidance and radial limit of the follower device.

[0086] In the application, there are multiple stop rods distributed radially. For example, there can be 4 stop rods distributed at equal intervals with an angle of 90°. One end of each stop rod is connected to the inner wall of the follower frame 26, and the other end is vacant, so as to form a circular cavity between the ends of each stop rod. The diameter of this circular cavity is larger than the outer diameter of the push sleeve, so that the push sleeve can pass through the circular cavity, facilitating the counterweight block and the impact block in the push sleeve to act on the vibration frame. A card slot for fitting with the stop rod is provided on the inner side of the expansion rod 219, and inner grooves 221 are provided on the two side walls of the card slot. At the same time, since the circular cavity is larger than the outer diameter of the push sleeve, as the expansion rod 219 rotates inward, the expansion rod 219 displaces on the stop rod until the expansion rod 219 is retracted to a certain angle (determined by the inner diameter of the telescopic ring), and it can completely disengage from the stop rod and thus be located in the circular cavity, realizing the disengagement from the entire follower frame 26.

[0087] The modular design of the follow-up device in the embodiments of the present application constructs an efficient force transmission link through the multi-stage connection of the follow-up frame, the top ring, and the vibration frame. The sliding cooperation mechanism between the side rod and the side groove effectively suppresses radial offset and torque generation while ensuring axial movement freedom. The radial setting of the stop rod innovatively converts linear motion into a mechanical triggering effect, and through the clamping cooperation with the impact component, efficient conversion between mechanical energy and vibration energy is achieved. This structural design simplifies the complexity of the device while ensuring the accurate transmission of impact vibration along a predetermined direction.

[0088] In the application, the energy storage component uses a conical spring 22, and the reset device uses a return spring 101. Please refer to Figures 1 through 9, a sediment separation device for the foundation pit drainage of water conservancy and hydropower construction, including a suction pipe 11 connected to an external water pump; it also includes an impact mechanism. The impact mechanism includes a plurality of side pipes 21, and each side pipe 21 is installed with a conical spring 22. The impact mechanism also includes a push sleeve 23 installed in the side pipe 21. The push sleeve 23 is along the axial position of the conical spring 22. A counterweight 24 is slidably connected in the push sleeve 23. An impact head 25 is coaxially installed on each counterweight 24. A follower frame 26 is slidably installed in the side pipe 21. A top ring 27 is installed on the follower frame 26. A vibration frame 28 is installed on the top ring 27. A plurality of transmission rods 29 are installed on the vibration frame 28. The impact mechanism also includes a plurality of side rods 210 installed on the follower frame 26 at equal intervals. A plurality of side slots 211 are equally spaced on the inner wall of the side pipe 21. The plurality of side rods 210 are respectively slidably connected in the side slots 211. A filter screen 212 is fitted and installed on the top ring 27. The plurality of transmission rods 29 respectively abut against the filter screen 212. A tail frame 213 is installed on the side pipe 21. A guide sleeve 214 is coaxially installed on the tail frame 213. A telescopic pipe 215 is coaxially installed in the push sleeve 23. One end of the telescopic pipe 215 away from the push sleeve 23 is installed with a tail ring 216. A through groove 217 is provided on the counterweight 24 and the impact head 25. The through groove 217 and the telescopic pipe 215 are coaxially arranged and have the same diameter. A plurality of fixing blocks 218 are installed on the outer wall of the push sleeve 23 at equal intervals. An expansion rod 219 is rotatably installed on the fixing block 218. A pull rod 220 is rotatably installed on the outer wall of the push sleeve 23. An internal groove 221 is provided on the inner wall of the expansion rod 219. The other end of the pull rod 220 is limited and slidably connected in the internal groove 221. The follower frame 26 is installed with a plurality of stop rods 223 corresponding to the expansion rods 219 at equal intervals. The end of the expansion rod 219 abuts against the stop rod 223. A compression spring 222 is installed on the inner wall of each of the plurality of pull rods 220, and the other ends of the plurality of compression springs 222 are respectively connected to the outer wall of the push sleeve 23. An extension frame 224 is installed on the inner wall of the side pipe 21. A shrinkage ring 225 coaxially arranged with the push sleeve 23 is installed on the extension frame 224. Each side pipe 21 is respectively threadedly installed with a threaded sleeve 226. The threaded sleeve 226 abuts against the filter screen 212 and also abuts against the outer wall of the water absorption shell 32.

[0089] In one embodiment, a transmission rod 29 is provided on the side of the vibration frame 28 facing the filter screen 212, and the transmission rod 29 abuts against the surface of the filter screen 212.

[0090] In application, the transmission rods 29 are distributed at the central position of the vibration frame 28 and there are a plurality of them, so as to evenly transmit the impact vibration to the surface of the filter screen through a multi-point contact method.

[0091] The specific layout design of the transfer rod in the embodiments of the present application optimizes the distribution efficiency of vibration energy. By means of multi-point contact, the impact vibration is evenly transmitted to the surface of the filter screen, avoiding local overload or energy loss caused by traditional single-point impact. The direct abutment design of the transfer rod and the filter screen eliminates the energy loss of the intermediate transfer components, enabling the vibration energy to act on the blocked sediment to the greatest extent. This structure is particularly suitable for the dredging operation of large-sized filter screens, ensuring the uniformity and comprehensiveness of the cleaning effect.

[0092] In one embodiment, the filter screen 212 is fixed to the water inlet end of the side pipe 21 through a threaded sleeve 226, and the inner wall of the threaded sleeve 226 is threadedly connected to the outer wall of the water absorption shell 32.

[0093] The dual fixing mechanism of the threaded sleeve in the embodiments of the present application innovatively solves the contradiction between the sealing performance and maintainability of the filter screen installation. By converting the axial pressing force into the radial sealing force through threaded connection, while ensuring the stability of the filter screen installation, a reliable waterproof sealing interface is formed. This design allows for the quick replacement of the filter screen without disassembling the main structure, significantly improving the equipment maintenance efficiency. The self-locking characteristic of the thread pair effectively avoids the loosening risk under vibration conditions, ensuring the reliability of long-term operation.

[0094] In one embodiment, a bottom sleeve 33 with a threaded connection is provided at the bottom of the water absorption shell 32, a bottom block 34 is installed with internal threads in the bottom sleeve 33, and a hexagonal groove 35 is opened on the bottom surface of the bottom block 34.

[0095] The modular design of the bottom sleeve and the bottom block in the embodiments of the present application realizes the convenient maintenance of the sediment deposition cavity. Through the standardized hexagonal groove interface design, the disassembly operation of the bottom block can be completed with conventional tools, significantly reducing the maintenance threshold. The threaded connection method ensures the structural strength while allowing the cleaning frequency to be flexibly adjusted according to the sediment deposition amount. This structural design concentrates the vulnerable components in the replaceable module, greatly extending the service life of the main structure of the device and reducing the overall maintenance cost.

[0096] The working principle of this device is as follows:

[0097] Please refer to Figure 1 and Figure 2 , when draining the water in the corresponding foundation pit, since the suction pipe 11 is connected to an external water pump, a corresponding suction force will be generated by the water pump. Then, the buffer shell 31 and the water absorption shell 32 are respectively placed into the foundation pit, and the water in the foundation pit is adsorbed by the suction force generated by the water pump. Then, the water is sucked into the water absorption shell 32. At this time, the water is filtered by multiple filter screens 212, and then the sediment will be blocked on the outside. The water is sucked away through the filter screens 212, the water absorption shell 32, the buffer shell 31 and the suction pipe 11. At this time, the filtering process is completed, and the sediment is blocked on the outside.

[0098] When performing water absorption, please refer to Figure 3 , since the side pipes 21 at different positions will be blocked to varying degrees by sediment, the blocking force at each place is different. Here, a side pipe 21 is used as an example. First, the generated suction force will suck water through the filter screen 212 into the water absorption shell 32 and discharge it. Then, the sediment will block at the position of the filter screen 212. Therefore, the resistance received at this filter screen 212 becomes larger and larger. Since the filter screen 212 is attached to the top ring 27 and multiple transmission rods 29, the follower frame 26 will be compressed and move backward. And the side rod 210 on the follower frame 26 slides along the side groove 211, thus playing a guiding role. At this time, since the expansion rod 219 will always push against the stop rod 223, and the stop rod 223 is connected to the follower frame 26, the stop rod 223 will push against the expansion rod 219, and then a backward thrust will be applied to the expansion rod 219. Please refer to Figure 7When the shift lever 223 applies a corresponding thrust to the expansion rod 219, one end of the pull rod 220 will slide along the internal groove 221, and then the other end of the pull rod 220 will rotate along the outer wall of the push sleeve 23, and then the pull rod 220 and the expansion rod 219 will be in a perpendicular state. At this time, the pull rod 220 will not slide with the internal groove 221, so a continuous backward thrust will be applied to make the push sleeve 23 move backward. At this time, the conical spring 22 at the rear end is also continuously compressed and stores energy. As more and more sediment accumulates, the resistance on the filter screen 212 becomes greater and greater, so it will push the follower frame 26 to continuously move backward until the multiple expansion rods 219 are all fitted into the contraction ring 225 on the extension frame 224. Then, as it continues to move backward, the multiple expansion rods 219 will contract, and the expansion rods 219 will slide and contract along the surface of the shift lever 223, making the connection distance between the expansion rods 219 and the shift lever 223 smaller and smaller until the multiple expansion rods 219 do not contact the shift lever 223. Then, the push sleeve 23 will lose the backward thrust. At this time, all the energy of the conical spring 22 is released, and through grooves 217 are respectively provided on the counterweight 24 and the impact head 25, so water will be discharged through the through grooves 217 and the telescopic pipe 215, effectively reducing the resistance between the impact head 25 and the water. Then, under the action of the conical spring 22, the push sleeve 23 and the counterweight 24 are driven to accelerate synchronously. First, the push sleeve 23 impacts the vibration frame 28. At this time, the energy on the push sleeve 23 will be transmitted to the vibration frame 28. Since the top ring 27 on the vibration frame 28 and the multiple transmission rods 29 are connected to the filter screen 212, the vibration force will be transmitted to the filter screen 212, causing the sediment on the filter screen 212 to fall off, reducing the adhesion of the sediment on the filter screen 212. And when the push sleeve 23 completes the impact, the counterweight 24 and the impact head 25 continue to move upward under the action of inertia, and then the impact head 25 impacts the vibration frame 28 again, transmitting the vibration again. At this time, the vibration frame 28 is subjected to the second vibration again, thus improving the effect of vibration and falling off.

[0099] When multiple side pipes 21 respectively perform impact vibrations, a process of one-time vibration cleaning can be satisfied. At this time, the single clogging time will be extended, thus ensuring the effect of single use. After completing a single drainage, the water pump is stopped. Then, without suction, under the action of the return spring 101, the follower frame 26 will return to its original position, and the conical spring 22 also returns to its initial position. Therefore, it will drive the expansion rod 219 to move through the shift lever 223 to the side of the shift lever 223 close to the tail ring 216, and at this time, it is in a clamped state again. When the water pump is restarted and the suction reaches the critical value, the process of impact vibration will occur again, so the use process is completed.

[0100] The sand discharging mechanism includes a buffer shell 31 connected and installed on the water suction pipe 11. The lower end of the buffer shell 31 is connected and installed with a water suction shell 32. The lower end of the water suction shell 32 is installed with a bottom sleeve 33. A bottom block 34 is installed on the bottom sleeve 33 by threading, and a hexagonal groove 35 is formed on the lower end surface of the bottom block 34.

[0101] When the drainage is completed, since the filter screen 212 cannot completely block all the sediment, it is necessary to repair and clean the sand in the water suction shell 32. First, the connection between the sealing block and the bottom sleeve 33 is released through the hexagonal groove 35, and then the buffer shell 31 and the water suction shell 32 are cleaned, thus completing the entire usage process.

[0102] In all the solutions mentioned above, for the connection between two components, welding, the cooperation of bolts and nuts, bolt or screw connection, or other well-known connection methods can be selected according to the actual situation, which will not be elaborated one by one here. For those mentioned above that involve fixed connection, welding is preferably considered. Although the embodiments of the present application have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present application. The scope of the present application is defined by the appended claims and their equivalents.

[0103] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent substitutions for some of the technical features; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A sediment separation device for drainage in a foundation pit of water conservancy and hydropower construction, characterized in that, Comprising: A buffer housing (31) with a water suction pipe (11) for connecting a water pump provided at one end; A water suction housing (32) communicating with the other end of the buffer housing (31), and at least two side pipes (21) radially penetrating through the water suction housing (32); A filter net (212) provided at the water inlet end of the side pipe (21); A follow-up device axially slidably arranged in the side pipe (21), with the front end of the follow-up device abutting against the filter net (212); A pressing device including an energy storage component and an impact component arranged in the side pipe (21), and the impact component forms a detachable connection with the rear end of the follow-up device; A reset device provided at the rear end of the follow-up device; The follow-up device is configured to: when the water flow resistance increases due to sediment accumulation on the filter net, it is pushed by the drainage pressure and moves backward along the side pipe (21), and compresses the energy storage component through the impact component to store energy; The pressing device is configured to: when the follow-up device moves backward to a set position, the connection is released, and the energy storage component releases energy to drive the impact component to rush forward, generating an impact vibration that is transmitted to the filter net (212) through the follow-up device; The reset device is configured to: when the drainage pressure decreases or the drainage stops, drive the follow-up device to reset to the initial position and form a detachable connection with the impact component.

2. The water conservancy and hydropower construction foundation pit drainage sediment separation device according to claim 1, characterized in that, The impact component includes: A push sleeve (23) with one end far from the follow-up device abutting against the energy storage component, and the other end radially hinged with an expansion rod (219) that can be detachably connected to the follow-up device; A counterweight (24) slidably arranged in the inner cavity of the push sleeve (23); An impact head (25) coaxially arranged at the front end of the counterweight (24) and capable of applying the impact vibration to the follow-up device.

3. The sediment separation device for drainage in the foundation pit of water conservancy and hydropower construction according to claim 2, wherein, The impact component further includes a pull rod (220). The outer wall of the push sleeve (23) is respectively hinged to one end of the expansion rod (219) and the pull rod (220). An internal groove (221) is formed along the length direction of the expansion rod on the inner side of the expansion rod (219). The end of the pull rod (220) is slidably arranged in the internal groove (221), and the other end of the expansion rod (219) forms a detachable connection with the rear end of the follow-up device.

4. The hydraulic and hydroelectric construction foundation pit drainage and sediment separation device according to claim 3, characterized in that, A compression spring (222) is arranged between the pull rod (220) and the push sleeve (23). One end of the compression spring (222) is fixed to the outer wall of the push sleeve (23), and the other end is connected to the inner wall of the pull rod (220).

5. The water conservancy and hydropower construction foundation pit drainage sediment separation device according to claim 3, characterized in that, A shrinkage ring (225) is arranged on the inner wall of the side pipe (21). The shrinkage ring (225) is located between the follow-up device and the energy storage component. The shrinkage ring (225) is coaxially arranged with the push sleeve (23), and the inner diameter of the shrinkage ring (225) is larger than the outer diameter of the push sleeve (23).

6. The sediment separation device for drainage in the foundation pit of water conservancy and hydropower construction according to claim 2, characterized in that, One end of the side pipe (21) away from the filter screen (212) is provided with a tail frame (213). A guide sleeve (214) is provided at the center of the tail frame (213). One end of the push sleeve (23) away from the follower device is connected with a telescopic pipe (215). The end of the telescopic pipe (215) is connected with a tail ring (216). The counterweight block (24) and the impact head (25) are axially provided with a through groove (217) coaxial with the telescopic pipe (215). The telescopic pipe (215) is slidably arranged in the guide sleeve (214). The tail ring (216) is in limit fit with the end face of the tail frame (213).

7. The sediment separation device for drainage of the foundation pit in water conservancy and hydropower construction according to claim 1, characterized in that, The follower device includes a follower frame (26), a top ring (27), a vibration frame (28), a side rod (210) and a stop rod (223); The follower frame (26) and the top ring (27) are connected by the side rod (210). A side groove (211) for slidingly cooperating with the side rod (210) is axially provided on the inner wall of the side pipe (21). The vibration frame (28) is arranged inside the top ring (27). A stop rod (223) is radially provided inside the follower frame (26). The stop rod (223) can be clamped with the impact assembly.

8. The sediment separation device for drainage of foundation pit in water conservancy and hydropower construction according to claim 7, characterized in that, One side of the vibration frame (28) facing the filter screen (212) is provided with a transmission rod (29). The transmission rod (29) abuts against the surface of the filter screen (212).

9. The water conservancy and hydropower construction foundation pit drainage sediment separation device according to claim 1, characterized in that, The filter screen (212) is fixed to the water inlet end of the side pipe (21) through a threaded sleeve (226). The inner wall of the threaded sleeve (226) is threadedly connected with the outer wall of the water absorption shell (32).

10. The water conservancy and hydropower construction foundation pit drainage sediment separation device according to claim 1, characterized in that, The bottom of the water absorption shell (32) is provided with a bottom sleeve (33) in threaded connection. A bottom block (34) is installed in the bottom sleeve (33) by thread. A hexagonal groove (35) is opened on the bottom surface of the bottom block (34).

Images