River channel desilting and screening device
By setting up a high-pressure flushing unit at the outlet of the feed hopper of the river silt screening device, the small stones and mud mass adhered to the silt are initially flushed, which solves the high viscosity of silt and blockage of stones in the traditional screening device. Problem, improving separation efficiency and effect.
Patent Information
- Application Number
- CN202323449211.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-15
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2033-12-15
AI Technical Summary
During the river silt process, traditional vibrating screens have high viscosity and contain large stones, which leads to some mud mass being unable to separate, and large stones being blocked from the hopper, which affects the screening efficiency and effect.
A river channel silting screening device is designed, including a feed hopper and a first flushing unit. The feed outlet of the feed hopper has a horizontal structure. The first flushing unit is equipped with a high-pressure water flow at the feed outlet, and the impact is adhered to The small stones and mud mass of the silt are initially washed and separated from the silt.
Through preliminary flushing, the problem of inseparability of mud mass caused by the high viscosity of the stone adherence to the silt and the silt is alleviated, the separation efficiency between the silt and the stone is improved, and blockage and silt during the flushing process is avoided.
Smart Images
Figure CN222469322U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of screening devices, in particular to a river channel dredging and screening device. Background Art
[0002] River dredging generally refers to the management of river channels, which is a water conservancy project. Through mechanical equipment, the silt deposited on the riverbed is salvaged ashore, thereby playing the role of dredging the river channel. The salvaged silt is usually dehydrated and then used for river bank reinforcement.
[0003] When desilting a river channel, a screening device is needed to screen the silt. In engineering, a vibrating screen is usually used as a screening device. When in use, the staff uses a hook machine to pour the water with mud that needs to be cleaned into the vibrating screen through the feed hopper. The vibrating screen separates the mud from impurities such as sand, stone, and garbage, and achieves a screening effect on the silt. However, when using a traditional vibrating screen, due to the high viscosity of river channel silt and the presence of large stones, some mud lumps cannot be separated, and there are cases where large stones block the feed hopper, affecting the efficiency and effect of screening. Utility Model Content
[0004] In order to overcome the defects of the prior art, the technical problem to be solved by the utility model is to propose a river dredging and screening device, which can solve the problem that the silt has high viscosity and contains large stones, and some mud clumps cannot be separated during the screening process.
[0005] To achieve this purpose, the utility model adopts the following technical solutions:
[0006] The utility model provides a river channel silting and screening device, comprising a feed hopper, a discharge port of the feed hopper being in a horizontal structure, a first flushing unit being arranged on one side of the feed hopper, and a flushing port of the first flushing unit facing the discharge port.
[0007] The preferred technical solution of the utility model is that the feed opening of the feed hopper is in a frustum shape.
[0008] The preferred technical solution of the utility model is that the first flushing unit is a flushing water pipe, and the flushing water pipe is arranged at the hypotenuse of the frustum in the feed inlet.
[0009] The preferred technical solution of the utility model is that the flushing water pipes are symmetrically arranged, and there are two of them.
[0010] The preferred technical solution of the utility model is that a first screen is arranged at the feed port of the feed hopper, a second flushing unit is arranged on at least one side of the first screen, and a flushing port of the second flushing unit faces the first screen.
[0011] The preferred technical solution of the utility model is that a pushing unit is provided on one side of the first screen, one end of the first screen is hinged to the feed port, and the action end of the pushing unit acts on the other end of the first screen relative to the hinged part.
[0012] An optimal technical solution of the utility model is that the pushing unit is a hydraulic oil rod, and the first screen at the action end of the hydraulic oil rod is fixedly connected with respect to the other end of the hinged part.
[0013] The preferred technical solution of the utility model is that it also includes a stone guide rail, and the inlet of the stone guide rail is arranged at the hinged part of the first screen.
[0014] The preferred technical solution of the utility model is that a guardrail is arranged on the stone guide rail.
[0015] An optimal technical solution of the utility model is that the second flushing unit is a high-pressure flushing water cannon, the number of which is set to four and distributed in a rectangular shape.
[0016] Beneficial effects of the utility model:
[0017] The utility model proposes a river channel dredging and screening device. In order to efficiently separate the silt with high viscosity, the discharge port of the feed hopper of the device is in a horizontal structure, and a high-pressure first flushing unit is provided at the discharge port. The high-pressure water flow of the flushing is impacted on the small stones and mud clumps adhered to the silt at the discharge port, so that the silt and small stones are preliminarily flushed before entering the next vibration module, which greatly reduces the problem of stones adhering to the silt and the high viscosity of the silt causing the mud clumps to be unable to be separated, and helps to better separate the silt and stones and the mud clumps. The setting of the flushing port towards the outlet also ensures that the silt and stones are smoothly delivered to the outlet during the flushing process, avoiding the problems of blockage and siltation during the flushing process. The structural design of the utility model is simple and compact, occupies a small space, is suitable for modification according to the existing device structure, and has a wide range of application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0019] Figure 1 It is a three-dimensional diagram of the river channel dredging and screening device of the first embodiment;
[0020] Figure 2 It is a left side view of the river channel dredging and screening device of Embodiment 1;
[0021] Figure 3 for Figure 1 Enlarged view of part A.
[0022] In the figure:
[0023] 1-first screen; 2-hinge; 3-feed hopper; 31-discharge port; 32-feed port; 4-feed hopper bracket; 5-screen box; 6-high-pressure water pipe; 7-first screen; 8-second screen; 9-pushing unit; 10-shock-absorbing spring; 11-first flushing unit; 12-second flushing unit; 13-water cannon bracket; 14-stone guide rail; 15-guardrail; 16-vibrator. DETAILED DESCRIPTION
[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0025] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0026] Embodiment 1
[0027] like Figure 1-3As shown, the connection representation between the lines and pipelines is omitted in the figure. A river channel desilting and screening device provided in this embodiment is divided into a feeding module and a vibration module. The two modules are connected in sequence. The feeding module includes a feeding hopper bracket 4, a feeding hopper 3 and a first flushing unit 11. The feeding hopper 3 is welded to the top of the feeding hopper bracket 4. The feeding port 32 of the feeding hopper 3 is in a frustum shape, which is wide at the top and narrow at the bottom. The bottom of the feeding hopper 3 is in a rectangular parallelepiped structure, and its discharge port 31 is in a horizontal structure. The flushing port of the first flushing unit faces the discharge port 31. Compared with the conventional screening device, the bottom of the feed hopper 3 is an inclined plate structure. In order to efficiently separate the sludge with high viscosity, the discharge port of the feed hopper 3 of the device in this embodiment is a horizontal structure, and a high-pressure first flushing unit 11 is provided at the discharge port, which impacts the high-pressure water flow of the flushing on the stones and mud balls adhered with sludge at the discharge port, so that the sludge and stones are initially flushed before entering the next vibration module, which greatly reduces the problem of stones adhering to sludge and the high viscosity of sludge causing the mud balls to be unable to be separated, and helps to better separate sludge and stones and separate mud balls. The setting of the flushing port toward the outlet also ensures that the sludge and stones are smoothly delivered to the outlet during the flushing process, avoiding the problem of blockage and siltation during the flushing process. The frustum-shaped feed port design helps to improve the fluidity of the material, making it easier for sludge and stones to enter the feed hopper 3 smoothly. Compared with feed ports of other shapes, the frustum-shaped design can reduce the resistance of the material and reduce the viscosity of the fluid, so that the material can enter the dredging device more smoothly, which is beneficial to the subsequent screening process.
[0028] Specifically, the first flushing unit 11 is a flushing water pipe, and is arranged at the bevel of the cone in the feed port. In order to prevent hard objects from damaging the water pipe, the water pipe is made of metal material and welded to the bevel. The form of the water pipe occupies a small space, and the flushing water pipe is arranged at the bevel of the cone in the feed port, which can make full use of the slope structure. The design of the slope helps the smooth flow of water, so that the flushing water flow can better cover the entire feed port, ensure uniform flushing effect, reduce flushing dead angles, and thus improve the cleaning efficiency of the dredging device. Furthermore, by setting the flushing water pipes to two and symmetrically arranging them, a more uniform flushing effect can be achieved. The two flushing water pipes are respectively located on both sides of the feed port, which can ensure that the flushing water flow forms a symmetrical impact force in the feed port, so that the silt and stones are evenly cleaned during the flushing process, thereby improving the flushing efficiency of the screening device.
[0029] Preferably, a pre-screening module is also included before the feed module. Specifically, the pre-screening module includes a first screen 1 for screening large stones, a second flushing unit 12 (the second flushing unit 12 in this embodiment is a high-pressure flushing water cannon), and a water cannon bracket 13. A first screen 1 with an internal width of 500 mm is arranged on the top of the feed hopper 3, and four high-pressure flushing water cannons are arranged around the first screen 1, and are distributed in a rectangular shape, and the flushing ports of the high-pressure flushing water cannons face the first screen 1. The pre-screening module can isolate stones with a diameter greater than 500 mm, and the high-pressure flushing water cannons around can flush the silt attached to the stones, and preliminarily flush larger silt groups. The first screen 1 is arranged at the feed inlet to perform preliminary separation before the material enters the dredging device, blocking large-particle stones and other materials, thereby reducing the burden on the subsequent screening part of the dredging device. This helps to improve the overall dredging efficiency and reduce the impact and loss on the screening equipment. By setting the first screen 1, the possibility of large-particle materials entering the subsequent equipment can be reduced, and the maintenance frequency of the equipment is reduced. This helps extend the service life of the equipment, reduces maintenance costs and downtime, and improves the reliability of the desilting device.
[0030] Further, a push unit 9 is provided on one side of the first screen 1, one end of the first screen 1 is hinged to the feed port, and the action end of the push unit 9 acts on the other end of the first screen 1 relative to the hinge 2. When the stones on the first screen 1 are blocked, the action end of the push unit 9 pushes the first screen 1 to dump the large stones isolated on the first screen 1 to the ground. The setting of the push unit 9 helps to prevent the excessive accumulation of large volumes of impurities on the first screen 1 during the screening process, reduces the risk of blockage, and reduces the risk and cost of manually cleaning the screen. Such a design can maintain the permeability of the first screen 1 and improve the stability and reliability of the dredging device. Preferably, the push unit 9 is a hydraulic oil rod, and the action end of the hydraulic oil rod is fixedly connected to the other end of the first screen 1 relative to the hinge. The action end of the hydraulic oil rod is fixedly connected to the other end of the first screen 1 relative to the hinge, and this structural design ensures the reliability and stability of the push unit 9. The hydraulic system provides a stable driving force, reduces the impact of vibration and impact on the equipment, and improves the service life of the dredging device. In addition, the hydraulic oil rod can provide a greater driving force, which helps to more effectively clean the sludge and impurities on the first screen 1. This helps to improve the cleaning efficiency of the silt removal device and make it more efficient.
[0031] Preferably, it also includes a stone guide rail 14, the entrance of which is arranged at the hinged portion of the first screen 1. The design of the stone guide rail 14 can ensure that the stones pushed and dumped by the first screen 1 are orderly guided toward the collection area on the ground. This helps to concentrate the stones in a designated area, facilitates subsequent processing and cleaning, and improves the overall efficiency of river dredging operations. Furthermore, a guardrail 15 is arranged on the stone guide rail 14. The provision of the guardrail 15 can effectively improve the safety of the stone guide rail 14. By providing the guardrail 15 on the guide rail, the stone can be prevented from falling off the guide rail during sliding or movement, thereby reducing accidental risks and protecting the safety of operators and the surrounding environment.
[0032] The vibration plate includes a screen box 5, a high-pressure water pipe 6, a primary screen 7, a secondary screen 8, a vibrator 16, and a damping spring 10. The vibration plate adopts a cylindrical eccentric shaft vibrator and an eccentric block to adjust the amplitude. The vibrator 16 is installed on the side plate of the screen box 5 and is driven to rotate by the motor through a V-belt to generate a centrifugal inertia force, forcing the screen box 5 to vibrate. The side plate of the screen box 5 is made of high-quality steel plates, and the side plate is connected to the crossbeam and the base of the vibrator with high-strength bolts or ring groove rivets. The motor causes the eccentric block of the vibrator to rotate at high speed through the V-belt. The running eccentric block generates a large centrifugal force, which excites the screen box 5 to produce a circular motion of a certain amplitude. The material on the screen is subjected to the impulse transmitted by the screen box 5 on the inclined screen surface, and a continuous throwing motion is generated. In the process of the material meeting the screen surface, particles smaller than the screen hole are screened, thereby achieving classification. A screen box high-pressure water pipe 6 is arranged horizontally on the top of the screen box 5. A plurality of nozzles arranged in an array are fixedly connected to the bottom of the screen box high-pressure water pipe 6. The nozzles point to the primary screen 7, and use high-pressure water to disperse the mud with high viscosity. The primary screen 7 has a 10 mm aperture and is used to screen small stones, garbage, etc. The secondary screen 8 has a 4 mm aperture and is used to screen fine sand.
[0033] The river channel silt removal and screening device of this embodiment realizes the separation of mud from impurities such as sand, stone, and garbage in the river channel silt, creating favorable conditions for silt dehydration at the back end of the process.
[0034] The present invention is described by preferred embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. The present invention is not limited to the specific embodiments disclosed herein, and other embodiments falling within the claims of this application are within the scope of protection of the present invention.
Claims
1. A river channel dredging and screening device, characterized in that: It comprises a feed hopper (3), wherein the discharge port (31) of the feed hopper (3) is in a horizontal structure, and a first flushing unit (11) is provided on one side of the feed hopper (3), wherein the flushing port of the first flushing unit (11) faces the discharge port (31).
2. The river channel dredging and screening device according to claim 1, characterized in that: The feed opening (32) of the feed hopper (3) is in the shape of a frustum.
3. The river channel dredging and screening device according to claim 2, characterized in that: The first flushing unit (11) is a flushing water pipe; The flushing water pipe is arranged at the hypotenuse of the frustum in the feed inlet (32).
4. The river channel dredging and screening device according to claim 3, characterized in that: The flushing water pipes are symmetrically arranged, and there are two of them.
5. The river channel dredging and screening device according to claim 1, characterized in that: A first screen (1) is provided at the feed port (32) of the feed hopper (3), a second flushing unit (12) is provided on at least one side of the first screen (1), and a flushing port of the second flushing unit (12) faces the first screen (1).
6. The river channel dredging and screening device according to claim 5, characterized in that: A pushing unit (9) is provided on one side of the first screen (1); One end of the first screen (1) is hinged to the feed port (32), and the action end of the pushing unit (9) acts on the other end of the first screen (1) relative to the hinged portion (2).
7. The river channel dredging and screening device according to claim 6, characterized in that: The pushing unit (9) is a hydraulic oil rod; The first screen (1) is fixedly connected to the other end of the hinged portion (2) at the action end of the hydraulic oil rod.
8. The river channel dredging and screening device according to claim 6, characterized in that: Also includes a stone guide rail (14); The inlet of the stone guide rail (14) is arranged at the hinged portion (2) of the first screen (1).
9. The river channel dredging and screening device according to claim 8, characterized in that: A guardrail (15) is provided on the stone guide rail (14).
10. The river channel dredging and screening device according to claim 5, characterized in that: The second flushing units (12) are high-pressure flushing water cannons, four of which are arranged in a rectangular arrangement.