A hydraulic engineering sediment screening device

Abstract

This utility model relates to the field of sediment separation technology and discloses a sediment screening device for water conservancy projects, including a tank. The top of the tank is provided with a feed inlet and a motor is fixedly connected to the top of the tank. The arc-shaped outer wall of the tank is provided with a sand outlet and a mud outlet. The output end of the motor is fixedly connected to a rotating shaft. One end of the rotating shaft is fixedly connected to a material contact plate. The bottom end of the material contact plate is provided with a filter device. After the sediment and water fall onto the material contact plate, they flow into the filter device and rotate in the spiral channel. During the rotation of the machine, the mud and water are carried out of the spiral filter tube by the centrifugal force of the rotation and fall to the bottom of the inner wall of the machine and are discharged through the mud outlet. The diameter of the sand is smaller than the hole and will be retained in the spiral filter tube. Finally, it enters the receiving chamber. Under the protection of the shell, the sand in the receiving chamber will not be disturbed by the mud and water and is discharged through the sand outlet.

Description

Technical Field

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

[0002] In modern water conservancy projects, sediment separation technology is required to process the extracted sand and gravel. Against this backdrop, some engineering sediment screening devices have emerged.

[0003] According to a public notice (CN212759653U) regarding a sediment screening device for water conservancy projects, belonging to the field of water conservancy engineering, the device includes a cleaning pipe. Support frames are installed on both sides of the lower part of the cleaning pipe, which is inclined. A screen plate is installed in the middle of the cleaning pipe, with evenly spaced screen holes. The screen plate is installed in a pre-reserved mounting groove on the inner wall of the cleaning pipe. Several springs are evenly installed at the upper and lower ends of both sides of the screen plate. A feed hopper is located at the top of the higher side of the cleaning pipe, and several water inlet pipes are evenly spaced on the wall of the cleaning pipe below the feed hopper. The upper and lower ends of the screen plate are respectively a sand and gravel channel and a silt channel, and a sand conveying platform is located at the bottom of the screen plate, which is installed on the cleaning pipe. This sediment screening device for water conservancy projects can effectively screen sand and gravel from silt and can operate continuously, accelerating the screening process.

[0004] However, the above-mentioned equipment cannot perform large-scale sediment separation operations in actual use. With a large amount of sediment flowing, the bottom filter screen will become clogged, which greatly reduces the filtration effect. In view of this, we propose a sediment screening device for water conservancy projects. Utility Model Content

[0005] The purpose of this invention is to provide a sediment screening device for water conservancy projects to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a sediment screening device for water conservancy projects, comprising a tank body, a feed inlet at the top of the tank body, a motor fixedly connected to the top of the tank body, a sand outlet at the arc-shaped outer wall of the tank body, a mud outlet at the arc-shaped outer wall of the tank body, a rotating shaft fixedly connected to the output end of the motor, a material contact plate fixedly connected to one end of the rotating shaft, a filter device at the bottom of the material contact plate, a protective shell at one end of the filter device, a receiving chamber rotatably connected to one end of the protective shell, a receiving chamber fixedly connected to the bottom inside the tank body, a sand outlet fixedly connected to one side of the receiving chamber, the filter device comprising a spiral filter tube, a spiral filter tube fixedly connected to the bottom of the material contact plate, a spiral channel fixedly connected inside the spiral filter tube, and a cutter fixedly connected to the surface of the spiral channel.

[0007] Preferably, the center of gravity of the filter device is on the same line as the center of gravity of the rotating shaft, so as to ensure that the filter device can perform stable rotation operation when rotating.

[0008] Preferably, the spiral filter tube is provided with a plurality of holes, the diameter of which is set to 0.05 mm. With 0.05 mm as the boundary, particles with a diameter larger than this are classified as "sand" and retained, while particles with a diameter smaller than this are classified as "mud" and discharged by rotation.

[0009] Preferably, the rotation path of the spiral filter tube and the rotation path of the spiral channel are adapted to each other, so that when the sediment rotates and filters in the spiral filter tube, the sediment can contact the spiral filter tube with a larger area under the support of the spiral channel, and be filtered and removed more efficiently.

[0010] Preferably, the spiral channel is located at the exact center of the spiral filter tube, and both sides of the spiral channel are fixedly connected to the inner wall of the spiral filter tube.

[0011] Preferably, the surface of the spiral channel is provided with a plurality of cutters, and two sets of cutters form a group. The cutting edges of the group of cutters are arranged facing each other, and the sides of the cutters are inclined on the spiral channel. The cutters face the inlet of the spiral filter tube, so that the mud and sand lumps that are not completely incompatible with water in the mud and sand moving from the inlet can collide with the cutters. After the cutters crush and cut the mud and sand lumps, the cut objects will flow to the next group of cutters with the blades, and finally achieve the effect of secondary crushing and cutting.

[0012] Compared with the prior art, this utility model provides a sediment screening device for water conservancy projects, which has the following beneficial effects:

[0013] 1. In the daily operation of this water conservancy project's sediment screening device, the motor drives the rotating shaft. The sediment entering from the feed inlet falls onto the contact plate due to gravity. After falling onto the contact plate, the sediment flows into the filtration device. When the sediment enters the spiral filter tube, it rotates within the spiral channel. The sediment is fully contacted when it comes into contact with the surface of the spiral filter tube. During the machine's rotation, the sediment and water are carried out of the spiral filter tube by the centrifugal force and fall to the bottom of the inner wall of the machine, where they are discharged through the mud outlet. The sand, with a diameter smaller than the holes, is retained in the spiral filter tube and finally enters the receiving chamber. Protected by the protective shell, the sand in the receiving chamber is not disturbed by the sediment and water, and is discharged through the sand outlet. With this space-efficient design, the bottom filter screen will not be clogged, resulting in a significant improvement in filtration efficiency.

[0014] 2. In this water conservancy project's sediment screening device, when sand and water enter the spiral filter tube, they rotate within the spiral channel. The sand and water come into full contact with the surface of the spiral filter tube. Several cutters on the spiral channel form two sets of cutters during operation. The cutting edges of one set of cutters face each other, and the sides of the cutters are inclined towards the spiral channel, facing the inlet of the spiral filter tube. This allows sand and water lumps that are not fully mixed with water to collide with the cutters. After the cutters crush and cut the sand and water lumps, the cut material flows to the next set of cutters along with the blades, ultimately achieving a secondary crushing and cutting effect. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0017] Figure 3 This is a schematic diagram of the spiral filter rigid tube structure of this utility model;

[0018] Figure 4 This is a schematic diagram of a partial structure of the spiral channel of this utility model;

[0019] Figure 5 This is a three-dimensional schematic diagram of the cutting blade of this utility model.

[0020] In the diagram: 1. Tank body; 2. Feed inlet; 3. Sand outlet; 4. Mud outlet; 5. Motor; 6. Rotating shaft; 7. Material contact plate; 8. Filter device; 9. Protective shell; 10. Receiving chamber; 801. Spiral filter tube; 802. Spiral channel; 803. Cutter. Detailed Implementation

[0021] like Figure 1 - Figure 5 As shown, this utility model provides a technical solution: a sediment screening device for water conservancy projects, including a tank 1, a feed inlet 2 at the top of the tank 1, a motor 5 fixedly connected to the top of the tank 1, a sand outlet 3 and a mud outlet 4 on the arc-shaped outer wall of the tank 1, a rotating shaft 6 fixedly connected to the output end of the motor 5, a material contact plate 7 fixedly connected to one end of the rotating shaft 6, a filter device 8 at the bottom end of the material contact plate 7, a protective shell 9 at one end of the filter device 8, a receiving chamber 10 rotatably connected to one end of the protective shell 9, a receiving chamber 10 fixedly connected to the bottom inside the tank 1, a sand outlet 3 fixedly connected to one side of the receiving chamber 10, and a spiral filter tube 801 fixedly connected to the bottom end of the material contact plate 7. The spiral filter tube 801 includes a spiral channel 802 fixedly connected inside the spiral filter tube 801, and a cutter 803 fixedly connected to the surface of the spiral channel 802.

[0022] In one embodiment of this utility model, the center line of gravity of the filter device 8 and the center line of gravity of the rotating shaft 6 are on the same line to ensure that the filter device 8 can perform stable rotation operation. The spiral filter tube 801 is provided with a plurality of holes with a hole diameter of 0.05 mm. With 0.05 mm as the boundary, particles with a diameter larger than this are classified as "sand" and retained, while particles with a diameter smaller than this are classified as "mud" and discharged by rotation. The rotation path of the spiral filter tube 801 and the rotation path of the spiral channel 802 are adapted to each other, so that when the mud and sand rotate and filter in the spiral filter tube 801, with the support of the spiral channel 802, the mud and sand can contact the spiral filter tube 801 with a larger area and be filtered more efficiently. For filtration and screening, the spiral channel 802 is located at the center of the spiral filter tube 801, and both sides of the spiral channel 802 are fixedly connected to the inner wall of the spiral filter tube 801. The surface of the spiral channel 802 is provided with several cutters 803, and two sets of cutters 803 form a group. The cutting edges of a group of cutters 803 are arranged facing each other, and the sides of the cutters 803 are inclined on the spiral channel 802. The cutters 803 face the inlet of the spiral filter tube 801, so that the mud and sand lumps that are not completely incompatible with water in the mud and sand moving from the inlet can collide with the cutters 803. After the cutters 803 crush and cut the mud and sand lumps, the cut objects will flow to the next group of cutters 803 with the blades, and finally achieve the effect of secondary crushing and cutting.

[0023] Furthermore, to prevent large-scale sediment separation, the bottom filter screen would become clogged with a large flow of sediment, significantly reducing the filtration effect. During normal operation, motor 5 drives the rotating shaft 6, and the sediment entering from inlet 2 falls onto the contact plate 7 due to gravity. After falling onto the contact plate 7, the sediment flows into the filter device 8. When the sediment enters the spiral filter tube 801, it rotates within the spiral channel 802, and the sediment contacts the spiral filter tube 801. During operation, the mud and water are fully contacted. As the machine rotates, the centrifugal force carries the mud and water out of the spiral filter tube 801 and onto the bottom of the inner wall of the machine, where they are discharged through the mud outlet 4. The sand, which is smaller in diameter than the holes, is retained in the spiral filter tube 801 and eventually enters the receiving chamber 10. Under the protection of the protective shell 9, the sand in the receiving chamber 10 is not disturbed by the mud and water and is discharged through the sand outlet 3. With this full utilization of space, the bottom filter screen will not be clogged, thus greatly improving the filtration effect.

[0024] In this invention, when sand and water enter the spiral filter tube 801, they rotate within the spiral channel 802. The sand and water contact the surface of the spiral filter tube 801, ensuring thorough contact. Several cutters 803 on the spiral channel 802 form two sets of cutters during operation. The blades of one set of cutters 803 face each other, and the sides of the cutters 803 are inclined towards the spiral channel 802, facing the inlet of the spiral filter tube 801. This allows sand and water lumps that are not fully mixed with water to collide with the cutters 803. After the cutters 803 crush and cut the sand and water lumps, the cut material flows to the next set of cutters 803 along with the blades, ultimately achieving a secondary crushing and cutting effect.

[0025] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A sediment screening device for water conservancy projects, comprising a tank (1), wherein a feed inlet (2) is provided at the top of the tank (1), a motor (5) is fixedly connected to the top of the tank (1), a sand outlet (3) is provided on the arc-shaped outer wall of the tank (1), a mud outlet (4) is provided on the arc-shaped outer wall of the tank (1), and a rotating shaft (6) is fixedly connected to the output end of the motor (5), characterized in that: One end of the rotating shaft (6) is fixedly connected to a material contact plate (7), and a filter device (8) is provided at the bottom end of the material contact plate (7). One end of the filter device (8) is provided with a protective shell (9), and one end of the protective shell (9) is rotatably connected to a receiving chamber (10). The receiving chamber (10) is fixedly connected to the bottom inside the tank body (1), and a sand outlet (3) is fixedly connected to one side of the receiving chamber (10). The filter device (8) includes: A spiral filter tube (801) is fixedly connected to the bottom end of the material contact plate (7). A spiral channel (802) is fixedly connected inside the spiral filter tube (801), and a cutter (803) is fixedly connected to the surface of the spiral channel (802).

2. The sediment screening device for water conservancy projects according to claim 1, characterized in that: The center of gravity of the filter device (8) is on the same line as the center of gravity of the rotating shaft (6).

3. The sediment screening device for water conservancy projects according to claim 1, characterized in that: The spiral filter tube (801) is provided with a number of holes, the diameter of which is set to 0.05 mm.

4. The sediment screening device for water conservancy projects according to claim 1, characterized in that: The rotation path of the spiral filter tube (801) and the rotation path of the spiral channel (802) are adapted to each other.

5. A sediment screening device for water conservancy projects according to claim 1, characterized in that: The spiral channel (802) is located at the center of the spiral filter tube (801), and both sides of the spiral channel (802) are fixedly connected to the inner wall of the spiral filter tube (801).

6. The sediment screening device for water conservancy projects according to claim 1, characterized in that: The surface of the spiral channel (802) is provided with a plurality of cutters (803), and two sets of cutters (803) form a group. The cutting edges of the group of cutters (803) are arranged facing each other, and the sides of the cutters (803) are arranged in an inclined shape. The cutters (803) face the inlet of the spiral filter tube (801).

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