A river channel dredging and screening device

Abstract

The present invention discloses a river channel dredging and screening device, and relates to the technical field of river channel dredging. The river channel dredging and screening device comprises a frame, a screen drum, a feed port, a discharge port and a rotating rod arranged on a drum screen body, the side wall of the frame is fixedly connected with two symmetrically arranged support frames, and the upper end of the support frame is fixedly connected with a water spray pipe, the bottom of the water spray pipe is fixedly connected with a plurality of array-arranged nozzles, and the side wall of the frame is provided with a driving mechanism for driving the nozzle to spray water. When screening the sludge, the river channel dredging and screening device can automatically flush the sieve holes of the sieve drum to avoid clogging, and at the same time, can automatically reciprocately knock and vibrate the side wall of the sieve drum to avoid material adhering to the side wall and the sieve holes of the sieve drum, and can reciprocately clean the sieve holes of the sieve drum to avoid clogging, thereby ensuring the efficiency and effect of its screening.

Description

Technical Field

[0001] The invention relates to the technical field of river channel desilting, and in particular to a river channel desilting screening device. Background Art

[0002] River dredging generally refers to the management of rivers, which is a water conservancy project. When dredging rivers, a screening device is needed to screen the silt. A drum screen is usually used. When in use, the staff uses a suction pump to let the water with mud to be cleaned enter the drum screen through the feed port. The water and mud are separated by the rolling screening of the drum screen and discharged through the sieve holes. Impurities such as branches and plastic bags are discharged through the discharge port, achieving a screening effect on the silt.

[0003] However, when the existing drum screen is in use, some debris will get stuck in the screen holes of the drum screen, which is difficult to clean and easily causes blockage, thereby affecting the efficiency and effect of screening. Summary of the invention

[0004] The object of the present invention is to provide a river channel dredging and screening device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a river dredging and screening device, comprising a frame, a screen drum, a feed port, a discharge port and a rotating rod arranged on a drum screen body, the side wall of the frame is fixedly connected to two symmetrically arranged support frames, and the upper end of the support frame is fixedly connected to a water spray pipe, the bottom of the water spray pipe is fixedly connected to a plurality of nozzles arranged in an array, and the side wall of the frame is provided with a driving mechanism for driving the nozzle to spray water, the side wall of the frame is provided with a vibration mechanism for knocking and vibrating the screen drum, and the side wall of the frame is provided with a cleaning mechanism for cleaning the screen drum.

[0006] Preferably, the driving mechanism includes an L-shaped plate fixedly connected to the side wall of the frame, and the upper side wall of the L-shaped plate is fixedly connected to a mounting cover, a sealing plate is slidably connected inside the mounting cover, and the sealing plate is connected to the side wall of the mounting cover through a first reset mechanism, the movement of the sealing plate is pushed by a first pushing mechanism, and the side wall of the mounting cover is fixedly connected to a water inlet pipe and a water outlet pipe, a first one-way valve is fixedly connected inside the water inlet pipe, and a second one-way valve is fixedly connected inside the water outlet pipe, and the other end of the water outlet pipe is fixed to the side wall of the water spray pipe.

[0007] Preferably, the first reset mechanism includes two symmetrically arranged first connecting blocks fixedly connected to the side walls of the sealing plate, and the side walls of the first connecting blocks are fixedly connected to two symmetrically arranged first T-shaped guide rods, the first T-shaped guide rod, and the side walls of the first T-shaped guide rod are sleeved with a second connecting block, the second connecting block is fixed to the side walls of the mounting cover, and the side walls of the first T-shaped guide rod are sleeved with a first spring.

[0008] Preferably, the first pushing mechanism comprises a circular ring fixedly sleeved on the side wall of the rotating rod, and the side wall of the circular ring is fixedly connected with a plurality of first protrusions arranged in an array.

[0009] Preferably, the vibration mechanism includes a first movable plate, and the side wall of the first movable plate is fixedly connected with a plurality of rubber rods arranged in an array, the first movable plate is connected to the side wall of the frame through a second reset mechanism, and the movement of the first movable plate is driven by a second pushing mechanism.

[0010] Preferably, the second reset mechanism includes two symmetrically arranged support plates fixedly connected to the side walls of the frame, and two symmetrically arranged second T-shaped guide rods are inserted into the side walls of the support plates, the side walls of the second T-shaped guide rods are sleeved with second springs, and the first movable plate is sleeved on the side walls of the second T-shaped guide rods.

[0011] Preferably, the second pushing mechanism includes a notch opened in the side wall of the water outlet pipe, and an installation box is fixedly connected in the notch, a rotating fan is rotatably connected in the installation box via a rotating shaft, and a disc is fixedly connected to the lower end of the rotating shaft, and a plurality of second protrusions arranged in an array are fixedly connected to the side wall of the disc.

[0012] Preferably, the cleaning mechanism includes a second movable plate, and a brush is fixedly connected to the side wall of the second movable plate, the second movable plate is connected to the side wall of the frame through a third reset mechanism, and the movement of the second movable plate is driven by a third pushing mechanism.

[0013] Preferably, the third reset mechanism includes a fixed plate fixedly connected to the side wall of the frame, and two symmetrically arranged third T-shaped guide rods are inserted into the side wall of the fixed plate, one end of the third T-shaped guide rod is fixed to the side wall of the second movable plate, and the side wall of the third T-shaped guide rod is sleeved with a third spring.

[0014] Preferably, the third pushing mechanism includes an annular plate fixedly mounted on the side wall of the screen drum, and the side wall of the annular plate is fixedly connected with a plurality of third protrusions arranged in an array, a movable rod is inserted into the side wall of the fixed plate, and one end of the movable rod is fixed to the side wall of the second movable plate, and the other end of the movable rod is fixedly connected with a conical block, and the conical block slides on the side wall of the third protrusion.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] This type of river dredging and screening device, by providing a driving mechanism, a vibrating mechanism and a cleaning mechanism, can automatically flush the sieve holes of the sieve drum to avoid clogging when screening the silt. At the same time, it can automatically reciprocate and vibrate the side walls of the sieve drum to avoid material adhering to the side walls and sieve holes of the sieve drum, and can reciprocate and clean the sieve holes of the sieve drum to avoid clogging, thereby ensuring the screening efficiency and effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the overall structure of the present invention from another perspective;

[0019] Figure 3 It is a partial cross-sectional structural schematic diagram of the installation cover in the present invention;

[0020] Figure 4 for Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0021] Figure 5 for Figure 2 A schematic diagram of the enlarged structure at B in the middle;

[0022] Figure 6 for Figure 3 Schematic diagram of the enlarged structure at C in the middle;

[0023] Figure 7 for Figure 6 Schematic diagram of the enlarged structure at D in the middle.

[0024] In the figure: 1, drum screen body; 101, frame; 102, screen drum; 103, feed port; 104, discharge port; 105, rotating rod; 201, L-shaped plate; 202, mounting cover; 203, water inlet pipe; 204, first one-way valve; 205, water outlet pipe; 206, second one-way valve; 207, sealing plate; 301, first connecting block; 302, first T-shaped guide rod; 303, first spring; 304, second connecting block; 4, conical block; 501, ring; 502, first convex block; 601, first Movable plate; 602, rubber rod; 701, support plate; 702, second T-shaped guide rod; 703, second spring; 801, notch; 802, installation box; 803, rotating shaft; 804, rotating fan; 805, disc; 806, second protrusion; 901, fixed plate; 902, third T-shaped guide rod; 903, third spring; 904, second movable plate; 905, brush; 1001, annular plate; 1002, third protrusion; 1003, movable rod; 11, support frame; 12, water spray pipe; 13, spray head. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figure 1-Figure 7 The present invention provides a technical solution: a river channel dredging and screening device, comprising a frame 101, a screen drum 102, a feed port 103, a discharge port 104 and a rotating rod 105 arranged on a drum screen body 1, the side wall of the frame 101 is fixedly connected to two symmetrically arranged support frames 11, and the upper end of the support frame 11 is fixedly connected to a water spray pipe 12, the bottom of the water spray pipe 12 is fixedly connected to a plurality of array-arranged nozzles 13, and the side wall of the frame 101 is provided with a driving mechanism for driving the nozzle 13 to spray water, and the frame 10 The side wall of the frame 101 is provided with a vibration mechanism for knocking and vibrating the sieve drum 102, and the side wall of the frame 101 is provided with a cleaning mechanism for cleaning the sieve drum 102. When screening the sludge, the sieve holes of the sieve drum 102 can be automatically flushed to avoid clogging. At the same time, the side wall of the sieve drum 102 can be automatically knocked and vibrated back and forth to avoid the material from adhering to the side wall and the sieve holes of the sieve drum 102, and the sieve holes of the sieve drum 102 can be cleaned back and forth to avoid clogging, thereby ensuring the screening efficiency and effect.

[0027] Preferably, the driving mechanism includes an L-shaped plate 201 fixedly connected to the side wall of the frame 101, and the upper side wall of the L-shaped plate 201 is fixedly connected to a mounting cover 202, a sealing plate 207 is slidably connected inside the mounting cover 202, and the sealing plate 207 is connected to the side wall of the mounting cover 202 through a first reset mechanism, the movement of the sealing plate 207 is pushed by a first pushing mechanism, and the side wall of the mounting cover 202 is fixedly connected to a water inlet pipe 203 and a water outlet pipe 205, a first one-way valve 204 is fixedly connected inside the water inlet pipe 203, and a second one-way valve 206 is fixedly connected inside the water outlet pipe 205, and the other end of the water outlet pipe 205 is fixed to the side wall of the water spray pipe 12, and when the rotating rod 105 rotates, the first pushing mechanism and the first reset mechanism make The sealing plate 207 moves back and forth in the mounting cover 202. When the sealing plate 207 moves toward the direction approaching the ring 501, negative pressure is generated in the mounting cover 202. At the same time, the first one-way valve 204 is opened and the second one-way valve 206 is closed. At this time, external water is pumped into the mounting cover 202 through the water inlet pipe 203. When the sealing plate 207 moves to a direction away from the ring 501 and resets, the water in the mounting cover 202 is squeezed. At the same time, the first one-way valve 204 is closed and the second one-way valve 206 is opened. At this time, the water in the mounting cover 202 is squeezed and enters the water spray pipe 12 through the water outlet pipe 205 and is sprayed out through the nozzle 13, so that the sieve holes of the sieve drum 102 can be flushed to avoid clogging and ensure the efficiency and effect of its screening.

[0028] Preferably, the first reset mechanism includes a first connecting block 301 fixedly connected to two symmetrically arranged side walls of the sealing plate 207, and the side walls of the first connecting block 301 are fixedly connected to two symmetrically arranged first T-shaped guide rods 302, the first T-shaped guide rod 302, and the side walls of the first T-shaped guide rod 302 are sleeved with a second connecting block 304, the second connecting block 304 is fixed to the side wall of the mounting cover 202, and the side walls of the first T-shaped guide rod 302 are sleeved with a first spring 303, which guides and resets the movement of the sealing plate 207.

[0029] Preferably, the first pushing mechanism includes a ring 501 fixedly mounted on the side wall of the rotating rod 105, and the side wall of the ring 501 is fixedly connected with a plurality of first protrusions 502 arranged in an array. When the rotating rod 105 rotates, the ring 501 is driven to rotate synchronously. When the first protrusion 502 abuts against the side wall of the sealing plate 207, the sealing plate 207 is pushed to slide into the mounting cover 202.

[0030] Preferably, the vibration mechanism includes a first movable plate 601, and the side wall of the first movable plate 601 is fixedly connected with a plurality of rubber rods 602 arranged in an array. The first movable plate 601 is connected to the side wall of the frame 101 through a second reset mechanism, and the movement of the first movable plate 601 is driven by a second pushing mechanism. When screening is performed, the first movable plate 601 and the rubber rod 602 are reciprocated by the second pushing mechanism and the second reset mechanism, so that the rubber rod 602 reciprocates and knocks and vibrates the side wall of the screen drum 102 to prevent the material from adhering to the side wall and the sieve hole of the screen drum 102, thereby ensuring its screening efficiency and effect.

[0031] Preferably, the second reset mechanism includes two symmetrically arranged support plates 701 fixedly connected to the side walls of the frame 101, and two symmetrically arranged second T-shaped guide rods 702 are inserted into the side walls of the support plates 701, the side walls of the second T-shaped guide rods 702 are sleeved with second springs 703, and the first movable plate 601 is sleeved on the side walls of the second T-shaped guide rods 702, which guide and reset the movement of the first movable plate 601.

[0032] Preferably, the second driving mechanism includes a notch 801 opened on the side wall of the water outlet pipe 205, and an installation box 802 is fixedly connected in the notch 801, a rotary fan 804 is rotatably connected in the installation box 802 through a rotating shaft 803, and a disc 805 is fixedly connected to the lower end of the rotating shaft 803, and a plurality of second protrusions 806 arranged in an array are fixedly connected to the side wall of the disc 805. When water passes through the water outlet pipe 205, it enters the installation box 802 and impacts the side wall of the rotary fan 804, causing it to rotate. The rotation of the rotary fan 804 drives the synchronous rotation of the disc 805. When the second protrusion 806 abuts against the side wall of the first movable plate 601, it pushes the first movable plate 601 and the rubber rod 602 to move toward the direction close to the screen drum 102.

[0033] Preferably, the cleaning mechanism includes a second movable plate 904, and a brush 905 is fixedly connected to the side wall of the second movable plate 904. The second movable plate 904 is connected to the side wall of the frame 101 through a third reset mechanism, and the movement of the second movable plate 904 is driven by a third pushing mechanism. The movable rod 1003 and the second movable plate 904 are reciprocated by the third pushing mechanism and the third reset mechanism, so that the brush 905 reciprocates to clean the sieve holes of the screen drum 102 to avoid blockage and ensure its screening efficiency and effect.

[0034] Preferably, the third reset mechanism includes a fixed plate 901 fixedly connected to the side wall of the frame 101, and two symmetrically arranged third T-shaped guide rods 902 are inserted into the side wall of the fixed plate 901, one end of the third T-shaped guide rod 902 is fixed to the side wall of the second movable plate 904, and the side wall of the third T-shaped guide rod 902 is sleeved with a third spring 903, which guides and resets the movement of the second movable plate 904.

[0035] Preferably, the third pushing mechanism includes an annular plate 1001 fixedly mounted on the side wall of the sieve drum 102, and the side wall of the annular plate 1001 is fixedly connected with a plurality of third protrusions 1002 arranged in an array, a moving rod 1003 is inserted into the side wall of the fixed plate 901, and one end of the moving rod 1003 is fixed to the side wall of the second moving plate 904, and the other end of the moving rod 1003 is fixedly connected with a conical block 4, and the conical block 4 slides on the side wall of the third protrusion 1002. When screening is performed, the rotation of the sieve drum 102 drives the synchronous rotation of the annular plate 1001. When the conical block 4 abuts against the side wall of the third protrusion 1002, the moving rod 1003 and the second moving plate 904 are pushed to move.

[0036] Working principle: When in use, during screening, the sludge is transported to the screen drum 102 through the feed port 103, and at the same time, the drum screen body 1 is started to rotate the rotating rod 105 and the screen drum 102, so that the sludge is screened, and the water and sludge are discharged through the sieve holes of the screen drum 102, while branches and other debris are discharged through the discharge port 104, so that the sludge is screened;

[0037] When the rotating rod 105 rotates, the ring 501 is driven to rotate synchronously. When the first protrusion 502 abuts against the side wall of the sealing plate 207, the sealing plate 207 is pushed to slide into the mounting cover 202. At the same time, the first spring 303 is compressed. When the first protrusion 502 passes over the side wall of the sealing plate 207, the sealing plate 207 can move and reset under the action of the first spring 303, so that the sealing plate 207 reciprocates in the mounting cover 202. When the sealing plate 207 moves in the direction close to the ring 501, negative pressure is generated in the mounting cover 202. At the same time, the first spring 303 is compressed. The first check valve 204 is opened, and the second check valve 206 is closed. At this time, external water is pumped into the installation cover 202 through the water inlet pipe 203. When the sealing plate 207 moves to a direction away from the ring 501 and resets, the water in the installation cover 202 is squeezed. At the same time, the first check valve 204 is closed, and the second check valve 206 is opened. At this time, the water in the installation cover 202 is squeezed and enters the water spray pipe 12 through the water outlet pipe 205 and is sprayed out through the nozzle 13, so that the sieve holes of the sieve drum 102 can be washed to avoid clogging and ensure the efficiency and effect of screening.

[0038] At the same time, when water passes through the water outlet pipe 205, it enters the installation box 802 and impacts the side wall of the rotary fan 804, causing it to rotate. The rotation of the rotary fan 804 drives the synchronous rotation of the disc 805. When the second protrusion 806 abuts against the side wall of the first movable plate 601, the first movable plate 601 and the rubber rod 602 are pushed to move in the direction close to the screen drum 102. At the same time, the second spring 703 is compressed. When the second protrusion 806 passes over the side wall of the first movable plate 601, the first movable plate 601 and the rubber rod 602 can move and reset under the action of the second spring 703, so that the rubber rod 602 reciprocates and knocks and vibrates the side wall of the screen drum 102, thereby preventing the material from adhering to the side wall and the sieve hole of the screen drum 102, thereby ensuring its screening efficiency and effect.

[0039] In addition, when screening is carried out, the rotation of the screen drum 102 drives the synchronous rotation of the annular plate 1001. When the conical block 4 abuts against the side wall of the third protrusion 1002, the moving rod 1003 and the second moving plate 904 are pushed to move. At the same time, the third spring 903 is compressed. When the conical block 4 passes over the side wall of the third protrusion 1002, the moving rod 1003 and the second moving plate 904 can move and reset under the action of the third spring 903, so that the brush 905 can reciprocate and clean the screen holes of the screen drum 102 to avoid blockage and ensure its screening efficiency and effect.

Claims

1. A river channel dredging and screening device, comprising a frame (101), a screen drum (102), a feed port (103), a discharge port (104) and a rotating rod (105) arranged on a drum screen body (1), characterized in that: The side wall of the frame (101) is fixedly connected to two symmetrically arranged support frames (11), and the upper end of the support frame (11) is fixedly connected to a water spray pipe (12), the bottom of the water spray pipe (12) is fixedly connected to a plurality of nozzles (13) arranged in an array, and the side wall of the frame (101) is provided with a driving mechanism for driving the nozzles (13) to spray water, the side wall of the frame (101) is provided with a vibration mechanism for knocking and vibrating the screen drum (102), and the side wall of the frame (101) is provided with a cleaning mechanism for cleaning the screen drum (102); The driving mechanism comprises an L-shaped plate (201) fixedly connected to the side wall of the frame (101), and the upper side wall of the L-shaped plate (201) is fixedly connected to a mounting cover (202), a sealing plate (207) is slidably connected inside the mounting cover (202), and the sealing plate (207) is connected to the side wall of the mounting cover (202) via a first reset mechanism, the movement of the sealing plate (207) is driven by a first driving mechanism, and the side wall of the mounting cover (202) is fixedly connected to a water inlet pipe (203) and a water outlet pipe (205), the water inlet pipe (203) is fixedly connected to a first one-way valve (204), and the water outlet pipe (205) is fixedly connected to a second one-way valve (206), and the other end of the water outlet pipe (205) is fixed to the side wall of the water spray pipe (12); The first pushing mechanism comprises a circular ring (501) fixedly sleeved on the side wall of the rotating rod (105), and the side wall of the circular ring (501) is fixedly connected to a plurality of first protrusions (502) arranged in an array; The vibration mechanism comprises a first movable plate (601), and a plurality of rubber rods (602) arranged in an array are fixedly connected to the side wall of the first movable plate (601), the first movable plate (601) is connected to the side wall of the frame (101) via a second reset mechanism, and the movement of the first movable plate (601) is driven by a second driving mechanism; The second pushing mechanism comprises a notch (801) formed on a side wall of the water outlet pipe (205), and a mounting box (802) is fixedly connected in the notch (801), a rotating fan (804) is rotatably connected in the mounting box (802) via a rotating shaft (803), a disc (805) is fixedly connected at the lower end of the rotating shaft (803), and a plurality of second protrusions (806) arranged in an array are fixedly connected to the side wall of the disc (805); The cleaning mechanism comprises a second movable plate (904), and a brush (905) is fixedly connected to a side wall of the second movable plate (904); the second movable plate (904) is connected to the side wall of the frame (101) via a third reset mechanism, and the movement of the second movable plate (904) is driven by a third driving mechanism; The third reset mechanism comprises a fixed plate (901) fixedly connected to the side wall of the frame (101), and two symmetrically arranged third T-shaped guide rods (902) are inserted into the side wall of the fixed plate (901), one end of the third T-shaped guide rod (902) is fixed to the side wall of the second movable plate (904), and a third spring (903) is sleeved on the side wall of the third T-shaped guide rod (902); The fixed plate (901) is fixedly connected to the side wall of the frame (101); the third pushing mechanism comprises an annular plate (1001) fixedly sleeved on the side wall of the screen drum (102); the side wall of the annular plate (1001) is fixedly connected to a plurality of third protrusions (1002) arranged in an array; a moving rod (1003) is inserted into the side wall of the fixed plate (901); one end of the moving rod (1003) is fixed to the side wall of the second moving plate (904); the other end of the moving rod (1003) is fixedly connected to a conical block (4); and the conical block (4) slides on the side wall of the third protrusion (1002).

2. A river channel dredging and screening device according to claim 1, characterized in that: The first reset mechanism comprises two symmetrically arranged first connection blocks (301) fixedly connected to the side walls of the sealing plate (207), the side walls of the first connection blocks (301) being fixedly connected to two symmetrically arranged first T-shaped guide rods (302), the first T-shaped guide rod (302), and the side walls of the first T-shaped guide rod (302) being sleeved with a second connection block (304), the second connection block (304) being fixed to the side walls of the mounting cover (202), and the side walls of the first T-shaped guide rod (302) being sleeved with a first spring (303).

3. A river channel dredging and screening device according to claim 1, characterized in that: The second reset mechanism comprises two symmetrically arranged support plates (701) fixedly connected to the side walls of the frame (101), two symmetrically arranged second T-shaped guide rods (702) are inserted into the side walls of the support plates (701), a second spring (703) is sleeved on the side walls of the second T-shaped guide rods (702), and the first movable plate (601) is sleeved on the side walls of the second T-shaped guide rods (702).

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