Sand screening device for water conservancy project

Abstract

The utility model discloses a sand screening device for hydraulic engineering in the technical field of sand screening equipment, which comprises a sand screening mechanism and a driving mechanism, the sand screening mechanism comprises a support frame and a screen plate, a rotating hole is arranged at the lower part of the top of the support frame, and the screen plate is rotatably connected with the rotating hole through a rotating column; a sieve plate is mounted at the top of a mounting frame, a driving mechanism is mounted on the outer side of a supporting frame, one end of the sieve plate is rotationally connected with the supporting frame through a rotating column, and the connecting position of the end of a connecting rod and an eccentric wheel is located at the non-circle-center position, so that when a motor drives the eccentric wheel to rotate, the connecting rod can be driven to move; and along with synchronous rotation of the connecting rod and the eccentric wheel, the sieve plate can be pushed and pulled, so that the sieve plate does reciprocating rotary motion on the top of the supporting frame by taking the rotating column as a rotating point, and then sand is sieved, so that the sand can be prevented from being accumulated on the surface of the sieve plate, and the sand sieving efficiency can be effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of sand screening equipment technology, specifically a sand screening device for water conservancy projects. Background Technology

[0002] Water conservancy projects are primarily designed to mitigate water-related disasters. Constructing water conservancy projects helps control water flow, prevent floods, and regulate and distribute water resources to meet the needs of people's lives and production. Water conservancy projects often involve the construction of dikes, flood control walls, and other structures to reinforce the infrastructure; the quality of these structures directly affects the overall operational effectiveness of the water conservancy project. To improve the quality of water conservancy projects, the construction process typically requires a mixture of fine sand, crushed stone, and cement, which are the most commonly used building materials. The sand and gravel usually need to be screened.

[0003] In the process of developing the invention, the inventors discovered that at least the following problems remain unresolved in the existing technology: when existing sand screening devices are used, sand accumulates on the surface of the screen plate, affecting the screening efficiency. Therefore, a new technical solution needs to be designed to address these issues. Utility Model Content

[0004] The purpose of this utility model is to provide a sand screening device for water conservancy projects, so as to solve the technical problem that sand accumulates on the surface of the screen plate during sand screening, which affects the screening efficiency of the material.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sand screening device for water conservancy projects, comprising a sand screening mechanism and a driving mechanism. The sand screening mechanism includes a support frame and a screen plate. A rotating hole is opened at the lower part of the top of the support frame. The screen plate is rotatably connected to the rotating hole through a rotating column. A baffle is fixed to each of the top two sides of the screen plate by bolts. The driving mechanism includes a motor, an eccentric wheel, and a connecting rod. The motor is connected to the outer wall of the support frame through a mounting base. The eccentric wheel is keyed to the driving end of the motor. One end of the connecting rod is connected to the eccentric wheel through a rotating shaft. The other end of the connecting rod is connected to the screen plate through a connecting seat.

[0006] In a preferred embodiment of this utility model, a rotating ring is fixed to the bottom of the eccentric wheel by bolts, and multiple support rods are fixed to the outer side wall of the motor by collars. The ends of the support rods are fixed to retaining rings by bolts, and the rotating ring is located inside the retaining ring and rotates; in order to maintain the stable rotation of the eccentric wheel.

[0007] In a preferred embodiment of this utility model, the bottom of the sieve plate is provided with crossbars, which are welded to the support frame by reinforcing rods, and the crossbars are in contact with the bottom of the sieve plate; in order to support the middle area of ​​the sieve plate.

[0008] In a preferred embodiment of this utility model, a sliding groove is provided at the top of the support frame, and a slider that is slidably connected to the sliding groove is fixed to the bottom of the sieve plate by bolts; in order to enable the sieve plate to rotate stably along the top of the support frame.

[0009] In a preferred embodiment of this utility model, a flow guide plate is fixed to the bottom of the sieve plate by bolts, and two vertical plates with a figure-eight structure are fixed to the top of the flow guide plate by bolts; in order to separate large particles of sand and gravel after screening.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] By mounting the screen plate on top of the mounting frame and the drive mechanism on the outside of the support frame, one end of the screen plate is rotatably connected to the support frame via a rotating column. Since the connection point between the end of the connecting rod and the eccentric wheel is not at the center, the motor drives the eccentric wheel to rotate, which in turn moves the connecting rod. With the synchronous rotation of the connecting rod and the eccentric wheel, the screen plate can be pushed and pulled, causing the screen plate to reciprocate around the rotating column at the top of the support frame, thereby achieving the screening of sand and preventing the accumulation of sand on the surface of the screen plate, which can effectively improve the screening efficiency of sand. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0013] Figure 2 This is a structural diagram of the rotating sieve plate of this utility model;

[0014] Figure 3 This is a structural diagram of the sieve plate connection of this utility model;

[0015] Figure 4 This is a diagram of the eccentric wheel connection structure of this utility model.

[0016] In the diagram: 100, sand screening mechanism; 110, support frame; 111, rotating hole; 112, chute; 113, crossbar; 114, reinforcing rod; 120, screen plate; 121, baffle; 122, diversion plate; 123, vertical plate; 124, connecting seat; 125, slider; 126, rotating column;

[0017] 200. Drive mechanism; 210. Motor; 211. Mounting base; 212. Collar; 213. Support rod; 214. Snap ring; 220. Eccentric wheel; 221. Rotating shaft; 222. Rotating ring; 230. Connecting rod. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] Example 1: A sand screening device for water conservancy projects includes a sand screening mechanism 100 and a drive mechanism 200. The sand screening mechanism 100 includes a support frame 110 and a screen plate 120. A rotating hole 111 is opened at the lower part of the top of the support frame 110. The screen plate 120 is rotatably connected to the rotating hole 111 through a rotating column 126. The rotating column 126 is fixed to the bottom of the screen plate 120 by bolts. The rotating column 126 is located in the rotating hole 111 and rotates. A baffle 121 is fixed to each of the top two sides of the screen plate 120 by bolts. The support frame 110 is used to provide mounting points for the installation of multiple parts, and the screen plate 120 is used to screen sand.

[0021] Example 2: The drive mechanism 200 includes a motor 210, an eccentric wheel 220, and a connecting rod 230. The motor 210 is connected to the outer wall of the support frame 110 via a mounting base 211. The mounting base 211 is welded to the motor 210, and the motor 210 is fixed to the top of the mounting base 211 with bolts. The eccentric wheel 220 is keyed to the drive end of the motor 210. One end of the connecting rod 230 is connected to the eccentric wheel 220 via a rotating shaft 221. The rotating shaft 221 is fixed to the top of the eccentric wheel 220 with bolts. The connecting rod 230 is sleeved... Outside the rotating shaft 221, the other end of the connecting rod 230 is connected to the screen plate 120 through the connecting seat 124. The connecting seat 124 is fixed to the outer wall of the screen plate 120 by bolts. The connecting shaft is rotatably connected inside the connecting seat 124 and passes through the end of the connecting rod 230. The motor 210 is used to drive the rotation of the eccentric wheel 220, so that the eccentric wheel 220 synchronously drives one end of the connecting rod 230 to rotate. Then, the other end of the connecting rod 230 can control the screen plate 120 to reciprocate around the rotating column 126 as the rotation point.

[0022] The top of the support frame 110 is tilted, so the sieve plate 120 is also tilted, and the drive mechanism 200 as a whole is also tilted.

[0023] Example 3: The bottom of the eccentric wheel 220 is fixed with a rotating ring 222 by bolts. The outer wall of the motor 210 is fixed with multiple support rods 213 by a collar 212. The collar 212 is fitted around the outside of the motor 210 and fixed with bolts. The support rods 213 have an L-shaped structure and are welded to the outer wall of the collar 212. The end of the support rod 213 is fixed with a retaining ring 214 by bolts. The rotating ring 222 is located inside the retaining ring 214 and rotates. The cooperation of the retaining ring 214 and the rotating ring 222 can control the stable rotation of the eccentric wheel 220, so that it can stably drive one end of the connecting rod 230 to rotate. The bottom of the sieve plate 120 has horizontal bars 113, which are welded to the support frame 110 via reinforcing bars 114. Multiple reinforcing bars 114 are distributed between the horizontal bars 113 and the support frame 110, with both ends of the reinforcing bars 114 welded to the inner walls of the horizontal bars 113 and the support frame 110, respectively. The horizontal bars 113 contact the bottom of the sieve plate 120. The cooperation of the horizontal bars 113 and the reinforcing bars 114 provides support for the middle of the sieve plate 120, enabling it to stably screen sand. A groove 112 is formed at the top of the support frame 110. A slider 125, which is slidably connected to the groove 112, is bolted to the bottom of the sieve plate 120. The cooperation of the slider 125 and the groove 112 prevents the sieve plate 120 from separating from the support frame 110, allowing the sieve plate 120 to stably reciprocate along the top of the support frame 110. The bottom end of the sieve plate 120 is fixed with a flow guide plate 122 by bolts, and the top of the flow guide plate 122 is fixed with two vertical plates 123 in a figure-eight shape by bolts; there is a gap between the two vertical plates 123, which can guide large particles of sand and gravel away from the support frame 110 and avoid mixing with the sand and gravel after screening.

[0024] Working principle: When the control switch of motor 210 is turned on, motor 210 drives eccentric wheel 220 to rotate, which in turn drives one end of connecting rod 230 to rotate. The other end of connecting rod 230 can control screen plate 120 to rotate on top of support frame 110 with rotating column 126 as the rotation point. At this time, the sand to be screened is continuously guided to the top of screen plate 120. Since screen plate 120 is in an inclined state, as screen plate 120 rotates, sand can roll down along the surface of screen plate 120, thereby completing the screening of sand. Sand and gravel particles that meet the requirements are located below screen plate 120, while large sand and gravel particles fall down along the surface of guide plate 122 to a position away from support frame 110. The rotating screen plate 120 can improve the screening efficiency of sand.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0026] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A sand screening device for water conservancy projects, characterized in that: The system includes a sand screening mechanism (100) and a drive mechanism (200). The sand screening mechanism (100) includes a support frame (110) and a screen plate (120). A rotating hole (111) is opened at the bottom of the top of the support frame (110). The screen plate (120) is rotatably connected to the rotating hole (111) through a rotating column (126). A baffle (121) is fixed to each of the top two sides of the screen plate (120) by bolts. The drive mechanism (200) includes a motor (210), an eccentric wheel (220), and a connecting rod (230). The motor (210) is connected to the outer wall of the support frame (110) via a mounting base (211). The eccentric wheel (220) is keyed to the drive end of the motor (210). One end of the connecting rod (230) is connected to the eccentric wheel (220) via a rotating shaft (221), and the other end of the connecting rod (230) is connected to the sieve plate (120) via a connecting seat (124).

2. The sand screening device for water conservancy projects according to claim 1, characterized in that: The bottom of the eccentric wheel (220) is fixed with a rotating ring (222) by bolts. The outer side wall of the motor (210) is fixed with multiple support rods (213) by a collar (212). The end of the support rod (213) is fixed with a retaining ring (214) by bolts. The rotating ring (222) is located inside the retaining ring (214) and rotates.

3. A sand screening device for water conservancy projects according to claim 1, characterized in that: The bottom of the sieve plate (120) is provided with crossbars (113), which are welded to the support frame (110) by reinforcing rods (114) and are in contact with the bottom of the sieve plate (120).

4. A sand screening device for water conservancy projects according to claim 1, characterized in that: The support frame (110) has a groove (112) at the top, and the bottom of the sieve plate (120) is fixed with a slider (125) that is slidably connected to the groove (112) by bolts.

5. A sand screening device for water conservancy projects according to claim 1, characterized in that: The bottom end of the sieve plate (120) is fixed with a flow guide plate (122) by bolts, and the top of the flow guide plate (122) is fixed with two vertical plates (123) in a figure-eight shape by bolts.

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