An air flotation scraper capable of preventing the scraper from tilting

Abstract

The present invention belongs to the technical field of air flotation scraper, and in particular, is an air flotation scraper capable of preventing the scraper from tilting. Aiming at the problem that the scraper in the prior art is prone to tilting due to the combined influence of various forces after a period of operation, the following scheme is proposed, including a fixed frame with an overall rectangular frame structure, the fixed frame is an overall rectangular structure, and the long side is the main stroke of the scraper, and the two long sides of the fixed frame are opposite to each other and are provided with guide rails near the four corners, and a chain transmission mechanism capable of sliding up and down is provided between the four groups of guide rails. The present invention can not only improve the installation convenience of the scraper, but also cooperate with the setting of the tightening spring to change the traditional locking type of fixation into a swingable active fixation mode, and can make fine adjustments according to the inclination angle when the resistance is changed, and immediately reset after the large resistance is removed, to ensure that it always maintains a vertical state under normal operation.

Description

Technical Field

[0001] The invention relates to the technical field of scraper machines, and in particular to an air-floating scraper machine capable of preventing a scraper plate from tilting. Background Art

[0002] Air flotation is a sewage treatment technology for solid-liquid separation or liquid-liquid separation. It generates a large number of tiny bubbles with a diameter of about 30 microns through a certain method, which make them adhere to solid or liquid pollutant particles close to water in the wastewater, forming an air floating body with a density less than that of water. Under the action of buoyancy, it floats to the water surface to form scum, and solid-liquid or liquid-liquid separation is carried out to complete the treatment of sewage. When treating sewage by air flotation, air flotation scraper is used as an important tool, mainly to remove scum on the water surface to achieve the effect of water purification.

[0003] After inspection, it was found that the existing scraper machine, when in operation, is subjected to force in one direction for a long time, that is, the resistance from the slag, combined with the vibration of the mechanical transmission itself, which can easily loosen the connection of the scraper, and then cause the scraper as a whole to slowly tilt, reducing the scraping effect, and causing the slag to pass over the scraper and not achieve a good scraping effect; and because the middle of the chain is in a natural drooping state, it will also cause the scraper to tilt; therefore, we propose a new scraper machine that prevents the scraper from tilting. Summary of the invention

[0004] Aiming at the problem that the scraper blade of the prior art scraper is easily skewed due to the combined influence of various forces after operating for a period of time, the present invention proposes an air flotation scraper that can prevent the scraper blade from tilting;

[0005] The invention comprises a fixed frame with an overall rectangular frame structure, wherein the fixed frame has an overall rectangular structure, and the long side is the main stroke of the scraper plate, guide rails are arranged near the four corners on the opposite sides of the two long sides of the fixed frame, and a chain transmission mechanism that can slide up and down is arranged between the four groups of guide rails, and the chain transmission mechanism comprises a bearing seat in each group of guide rails that is slidably connected, and two sprocket connecting rods that are parallel to each other and of equal height are rotatably connected between the four bearing seats, and the sprocket connecting rod is parallel to the short side of the fixed frame, and both ends of the sprocket connecting rod are keyed to sprockets, and the same transmission chain is transmission-connected between the two sprockets close to the long side of the fixed frame; A same bow-shaped pull frame is fixed between the top ends of the two bearing seats close to the long sides of the fixed frame; a clamping mechanism is provided on the opposite sides of the two pairs of transmission chains, and the positions of the clamping mechanisms on the two transmission chains are adapted, and the clamping mechanism includes two outwardly extending extended pins arranged on the single-section transmission chain, the two extended pins are sleeved with the same chain clamping plate, the two extended pins are respectively sleeved with mutually symmetrical clamping rods, and a clamping spring is fixed on the opposite side of the two clamping rods near the top ends, an L-shaped suspension rod that can swing left and right is clamped between the two clamping rods, and the same scraper plate is fixed between the L-shaped suspension rods in the two sets of clamping mechanisms at the same height.

[0006] A further configuration is that a through hole matching the outer diameter of the extended pin shaft is opened in the middle of the clamping rod member, and a wear-resistant slip ring is clamped in the through hole, an arc-shaped stop block is arranged between the bottom ends of the two clamping rod members, and arc-shaped anti-slip blocks matching the curvature of the arc-shaped stop block are respectively arranged on the two opposite sides of the L-shaped suspension rod member near the bottom end; by setting the arc-shaped stop block and the arc-shaped anti-slip block, it can be ensured that the scraper plate can swing to a certain amplitude when running and can automatically reset after the external force is reduced.

[0007] A further arrangement is that a threaded groove is formed at one end of the two extended pin shafts away from the transmission chain, and a counter nut is screwed on the threaded groove. Protruding limit blocks are fixed at both ends of the chain clamping plate on one side close to the clamping rod, ensuring that the scraper plate can swing within a certain range to reduce the risk of falling off.

[0008] A further configuration is that vertical rope rod racks are fixed on both sides of the fixed frame in the middle of the long sides, and the same transmission rope winding rod is rotatably connected between the top ends of the two rope rod racks, and the transmission rope winding rods are wound with pull ropes in the same direction near the two ends and above the two bow-shaped pull racks, and the ends of the pull ropes away from the transmission rope winding rods are respectively fixed on the bow-shaped pull racks on the same side; a driven gear is fixed to the end of the transmission rope winding rod located on the front of the device, and a vertical self-locking electric push rod is fixed to the side of the fixed frame near the oblique lower part of the driven gear, and a rack push rod meshing with the driven gear is fixed to the top of the extension rod of the self-locking electric push rod; by setting the rack push rod in conjunction with the setting of the self-locking electric push rod, automatic remote adjustment can be performed when the water level changes.

[0009] A further configuration is that a water level measuring tube extending into the water is fixed to the end of the fixed frame by bolts, and the water level measuring tube as a whole is composed of a vertical circular tube and a rectangular box at the top, a water-permeable hole is opened on the outer wall of the circular tube near the bottom, and a float is slidably connected in the circular tube, a top rod is fixed to the top of the float, a toggle piece extending into the rectangular box is fixed to the top of the top rod, and contact pieces are provided on the upper and lower sides of the toggle piece on the side of the rectangular box, and the spacing between the two contact pieces is equal to 2-4 times the width of the toggle piece; a controller is connected through the contact piece via a signal line, and the signal output end of the controller is connected to the control end of the self-locking electric push rod.

[0010] A further configuration is that a flipping plate is fixed on the side of the scraper plate near the forward side. The flipping plate on the forward side of the scraper plate can prevent scum from accumulating during the scraping process and causing it to flip over the scraper plate and fall to the rear side, ensuring that the scraper plate can remove as much scum as possible.

[0011] A further configuration is that anti-fall wheels with equal spacing are fixed on the opposite sides of the two transmission chains, and the anti-fall wheels are sleeved on the ends of the extended pin shafts; a same support rail is fixed between the bottom ends of the bearing seats below the two ends of the same bow-shaped puller, and the support rail is parallel to the bow-shaped puller on the side, and the anti-fall wheel is rollingly connected to the top of the support rail; by setting the anti-fall wheel and support rail, the transmission chain can be prevented from being too long during use, resulting in excessive falling amplitude in the middle, which in turn affects the average insertion depth of the scraper plate.

[0012] A further arrangement is that one end of one of the sprocket connecting rods close to the front passes through a fixed frame and is fixed with a driven pulley, and a strip hole matching the diameter and stroke of the sprocket connecting rod is opened on the side of the fixed frame; an L-shaped plate seat and a mounting plate seat are fixed to the top of the bow-shaped puller on the side close to the front, and a main motor is fixed on the L-shaped plate seat, and a driving pulley is fixed to the top of the output shaft of the main motor, and the driving pulley and the driven pulley form a transmission connection; a counterweight is fixed to the other end of the bow-shaped puller on the same side as the L-shaped plate seat; the counterweight is arranged to ensure that the bow-shaped puller can slide up and down smoothly.

[0013] A further configuration is that a flushing mechanism is provided below the second mounting plate seat, and the flushing mechanism includes a reduction gear box fixed below the second mounting plate seat, the input shaft of the reduction gear box is connected to the output shaft end of the main motor through a coupling, and a cliff-jumping cam is fixed to the top of the output shaft of the reduction gear box, an impact rod that contacts the cliff-jumping cam is slidably connected to the side of the second mounting plate seat, and an annular retaining ring is fixed to one end of the circumferential outer wall of the impact rod close to the cliff-jumping cam, and a reset spring is provided between the annular retaining ring and the second mounting plate seat; A water pumping impact pump barrel parallel to the impact rod is fixed to the top of the mounting plate seat 2, and a sealing piston disk is slidably connected to the inside of the water pumping impact pump barrel, and a push rod is fixed in the middle of the sealing piston disk, and a connecting rod is fixed between the push rod and the end of the impact rod, and a water supply hose is inserted into the end of the water pumping impact pump barrel away from the push rod, and the end of the water supply hose away from the water pumping impact pump barrel is connected to a fixed connecting pipe extending into the water, and a section of the fixed connecting pipe arranged in the water is arranged in a hook shape, and the water outlet faces the sprocket, and the water outlet of the fixed connecting pipe is submerged in water.

[0014] A further configuration is that a hook tube is inserted into the bottom end of the fixed connecting pipe, and the vertical height of the hook tube can be adjusted.

[0015] The beneficial effects of the present invention are:

[0016] 1. The scraper plate fixed by the clamping rod can not only improve the installation convenience of the scraper plate, but also change the traditional locking fixation to a swingable movable fixation mode by coordinating with the setting of the tightening spring. It can make fine adjustments according to the inclination angle when the resistance changes, and immediately reset after the large resistance is removed, ensuring that it always maintains a vertical state under normal operation.

[0017] 2. By setting up a water level measuring tube, the water level measuring tube can be inserted into the water during use. When the water level is normal, ensure that the toggle piece is between the two contact pieces. When the water level drops or rises, the signal is directly transmitted to the contact piece, and then the overall chain transmission mechanism is controlled to rise or fall accordingly to ensure that the scraper plate effectively scrapes away the scum on the water surface.

[0018] 3. Through the flushing mechanism, when in use, water can be pumped out slowly first, and when it is pumped to a certain extent, one of the scraper plates rotates to the flushing area. At this time, under the action of the cliff jumping cam and the impact rod, the piston disc moves suddenly, and then the water sucked into the hook-shaped tube is quickly flushed away and shot toward the sprocket to play a cleaning role. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of an air flotation scraper capable of preventing the scraper from tilting, as proposed by the present invention;

[0020] Figure 2 A top view of an air flotation scraper capable of preventing the scraper from tilting proposed by the present invention;

[0021] Figure 3 The present invention proposes an air flotation scraper capable of preventing the scraper from tilting. Figure 2 Sectional view along line AA;

[0022] Figure 4 This is a schematic diagram of the overall structure of a chain transmission mechanism in an air flotation scraper that can prevent the scraper from tilting, as proposed by the present invention;

[0023] Figure 5 A partial cross-sectional view of a water level measuring cylinder in an air flotation scraper capable of preventing the scraper from tilting proposed by the present invention;

[0024] Figure 6 A schematic diagram of the structure of a flushing mechanism in an air flotation scraper capable of preventing the scraper from tilting proposed by the present invention;

[0025] Figure 7 A schematic diagram of the installation structure of a scraper in an air flotation scraper capable of preventing the scraper from tilting proposed by the present invention;

[0026] Figure 8 The invention provides a schematic diagram of the exploded structure of an L-shaped fixing member in an air flotation scraper capable of preventing the scraper from tilting.

[0027] In the figure: 1, fixed frame; 2, counterweight; 3, sprocket; 4, guide rail; 5, bearing seat; 6, transmission rope reel; 7, pull rope; 8, rope rod frame; 9, bow-shaped pull frame; 10, anti-fall wheel; 11, transmission chain; 12, sprocket connecting rod; 13, water level measuring tube; 131, water permeable hole; 132, floating block; 133, top rod; 134, contact piece; 135, toggle piece; 14, water pump barrel; 15, reduction gear box; 16, driven pulley; 17, strip hole; 18 , main motor; 19, L-shaped plate seat; 20, self-locking electric push rod; 21, rack push rod; 22, scraper plate; 23, support rail; 24, mounting plate seat 2; 25, chain clamp; 26, water hose; 27, turning plate; 28, clamping rod; 29, connecting rod; 30, impact rod; 31, fixed pipe; 32, annular retaining ring; 33, cliff jumping cam; 34, perforation; 35, L-shaped suspension rod; 36, extension pin shaft; 37, limit block; 38, tightening spring; 39, arc-shaped anti-drop block. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] In this embodiment

[0030] Reference Figure 1-8 , an air flotation scraper capable of preventing a scraper from tilting, comprising a fixed frame 1 having an overall rectangular frame structure, the fixed frame 1 having an overall rectangular structure, and the long side of the fixed frame 1 being the main stroke of the scraper plate 22, guide rails 4 are arranged near the four corners on the opposite sides of the two long sides of the fixed frame 1, and a chain transmission mechanism capable of sliding up and down is arranged between the four groups of guide rails 4, the chain transmission mechanism comprises a bearing seat 5 slidably connected in each group of guide rails 4, two sprocket connecting rods 12 parallel to each other and of equal height are rotatably connected between the four bearing seats 5, and the sprocket connecting rod 12 is parallel to the short side of the fixed frame 1, both ends of the sprocket connecting rod 12 are key-connected with sprockets 3, and the two sprockets 3 close to the long side of the fixed frame 1 are transmission-connected with the same transmission chain 11;

[0031] A same bow-shaped puller 9 is fixed between the tops of the two bearing seats 5 close to the long sides of the fixed frame 1; a clamping mechanism is provided on the opposite side of the two pairs of transmission chains 11, and the positions of the clamping mechanisms on the two transmission chains 11 are adapted, and the clamping mechanism includes two outwardly extending extended pins 36 arranged on the single-section transmission chain 11, and the same chain clamping plate 25 is sleeved on the two extended pins 36, and mutually symmetrical clamping rods 28 are respectively sleeved on the two extended pins 36, and a tightening spring 38 is fixed on the opposite side of the two clamping rods 28 near the top, and the two clamping An L-shaped hanging rod member 35 that can swing left and right is clamped between the rod members 28, and the same scraper plate 22 is fixed between the L-shaped hanging rod members 35 in the two groups of clamping mechanisms at the same height; the scraper plate 22 that is clamped and fixed by the clamping rod member 28 can not only improve the installation convenience of the scraper plate 22, but also, with the setting of the clamping spring 38, the traditional locking fixation is changed to a swingable active fixation method, which can produce fine adjustments along with the inclination angle when the resistance changes, and immediately reset after the large resistance is removed, ensuring that it always maintains a vertical state under normal operation.

[0032] In the present invention, a through hole 34 matching the outer diameter of the extended pin shaft 36 is opened in the middle of the clamping rod 28, and a wear-resistant slip ring is clamped in the through hole 34, an arc-shaped stop block is arranged between the bottom ends of the two clamping rods 28, and arc-shaped anti-slip blocks 39 matching the curvature of the arc-shaped stop block are respectively arranged on the two opposite sides of the L-shaped suspension rod 35 near the bottom end; by setting the arc-shaped stop block and the arc-shaped anti-slip block 39, when the scraper plate 22 is running, it can be ensured that the scraper plate 22 can swing to a certain amplitude and can automatically reset after the external force is reduced.

[0033] Reference Figure 7-8 , the two extended pin shafts 36 are both provided with threaded grooves at one end away from the transmission chain 11, and the threaded grooves are both screwed with top nuts, and the chain clamping plate 25 is fixed with protruding limit blocks 37 at both ends of the side close to the clamping rod 28; ensuring that the scraper plate 22 can swing within a certain range to reduce the risk of falling off.

[0034] Reference Figure 1 and Figure 3-4, vertical rope rod frames 8 are fixed on the two opposite sides of the fixed frame 1 in the middle of the long sides, and the same transmission rope winding rod 6 is rotatably connected between the top ends of the two rope rod frames 8, and the transmission rope winding rod 6 is located above the two bow-shaped pull frames 9 near the two ends and has pull ropes 7 wound in the same direction, and the ends of the pull ropes 7 away from the transmission rope winding rod 6 are respectively fixed on the bow-shaped pull frames 9 on the side; a driven gear is fixed to the end of the transmission rope winding rod 6 located on the front of the device, and a vertical self-locking electric push rod 20 is fixed on the side of the fixed frame 1 near the oblique lower part of the driven gear, and a rack push rod 21 meshing with the driven gear is fixed to the top of the extension rod of the self-locking electric push rod 20; by setting the rack push rod 21 in conjunction with the setting of the self-locking electric push rod 20, automatic remote adjustment can be performed when the water level changes.

[0035] Reference Figure 3 and Figure 5 The end of the fixed frame 1 is fixed with a water level measuring tube 13 extending into the water by bolts, and the whole of the water level measuring tube 13 is composed of a vertical round tube and a rectangular box at the top. A water-permeable hole 131 is opened on the outer wall of the round tube near the bottom, and a floating block 132 is slidably connected in the round tube. A top rod 133 is fixed to the top of the floating block 132. A toggle piece 135 extending into the rectangular box is fixed to the top of the top rod 133. The side of the rectangular box is located on the upper and lower sides of the toggle piece 135. The spacing between the two contact pieces 134 is equal to the spacing between the toggle piece 13 5 is 2-4 times the width; the controller is connected to the controller through the signal line through the contact piece 134, and the signal output end of the controller is connected to the control end of the self-locking electric push rod 20; through the water level measuring tube 13, when in use, the water level measuring tube 13 is extended into the water, and when the water level is normal, it is sufficient to ensure that the toggle piece 135 is located between the two contact pieces 134; then when the water level drops or rises, the signal is directly transmitted to the contact piece 134, and then the overall chain transmission mechanism is controlled to rise or fall accordingly to ensure that the scraper plate 22 effectively scrapes the scum on the water surface.

[0036] Reference Figure 3 A flipping plate 27 is fixed on the side of the scraper plate 22 near the forward side. The flipping plate 27 on the forward side of the scraper plate 22 can prevent scum from accumulating during the scraping process and causing it to flip over the scraper plate 22 and fall to the rear side, ensuring that the scraper plate 22 can remove as much scum as possible.

[0037] Reference Figure 1-2 and Figure 4, the two transmission chains 11 are fixed with anti-fall wheels 10 distributed at equal intervals on the opposite sides, and the anti-fall wheels 10 are sleeved on the ends of the extended pin shafts 36; the same support rail 23 is fixed between the bottom ends of the bearing seats 5 below the two ends of the same bow-shaped puller 9, and the support rail 23 is parallel to the bow-shaped puller 9 on the side, and the anti-fall wheels 10 are rollingly connected above the support rail 23; by setting the anti-fall wheels 10 and support rails 23, the transmission chain 11 can be prevented from being too long during use, resulting in excessive falling amplitude in the middle, which in turn affects the average insertion depth of the scraper plate 22.

[0038] Reference Figure 1 , one end of a sprocket connecting rod 12 near the front passes through the fixed frame 1 and is fixed with a driven pulley 16, and the side of the fixed frame 1 is provided with a strip hole 17 that is compatible with the diameter and stroke of the sprocket connecting rod 12; the top of the bow-shaped puller 9 near the front side is respectively fixed with an L-shaped plate seat 19 and a mounting plate seat 24, and a main motor 18 is fixed on the L-shaped plate seat 19, and a driving pulley is fixed on the top of the output shaft of the main motor 18, and the driving pulley and the driven pulley 16 form a transmission connection; a counterweight 2 is fixed to the other end of the bow-shaped puller 9 on the same side as the L-shaped plate seat 19; the counterweight 2 provided can ensure that the bow-shaped puller 9 slides up and down smoothly.

[0039] Reference Figure 1 and Figure 6 A flushing mechanism is provided below the second mounting plate seat 24, and the flushing mechanism includes a reduction gear box 15 fixed below the second mounting plate seat 24, the input shaft of the reduction gear box 15 is connected to the output shaft end of the main motor 18 through a coupling, and a cliff jumping cam 33 is fixed to the top of the output shaft of the reduction gear box 15, and an impact rod 30 that conflicts with the cliff jumping cam 33 is slidably connected to the side of the second mounting plate seat 24, and an annular retaining ring 32 is fixed to one end of the circumferential outer wall of the impact rod 30 close to the cliff jumping cam 33, and a return spring is provided between the annular retaining ring 32 and the second mounting plate seat 24; a water pumping impact pump barrel 14 parallel to the impact rod 30 is fixed to the top of the second mounting plate seat 24, and the interior of the water pumping impact pump barrel 14 is slidably connected to a seal The piston disc is sealed, and a push rod is fixed in the middle of the sealing piston disc, and the same connecting rod 29 is fixed between the push rod and the end of the impact rod 30, and a water hose 26 is inserted into the end of the water pumping impact pump barrel 14 away from the push rod, and the end of the water hose 26 away from the water pumping impact pump barrel 14 is connected to a fixed pipe 31 extending into the water, and a section of the fixed pipe 31 arranged in the water is arranged in a hook shape, and the water outlet faces the sprocket 3, and the water outlet of the fixed pipe 31 is submerged in the water; through such an arrangement, when in use, water can be slowly pumped out first until it is pumped to a certain extent, and under the action of the cliff jumping cam 33 and the impact rod 30, the piston disc moves suddenly, and then the water sucked into the hook-shaped tube is quickly flushed away and shot toward the sprocket 3, thereby playing a cleaning role.

[0040] Reference Figure 6 The bottom end of the fixed pipe 31 is plugged with a hook pipe, and the vertical height of the hook pipe can be adjusted.

[0041] When the device is in use, after all the components are installed, the fixed frame 1 is fixed on the top of the sewage pool, and the upper and lower heights of the chain transmission mechanism are adjusted so that the bottom end of the scraper plate 22 extends into the water to a certain depth to ensure that the scum can be scraped away; then the main motor 18 is started to drive the chain transmission mechanism to operate under the action of the conveyor belt. At this time, the scraper plate 22 fixed by the clamping rod 28 is changed from the traditional locking type to a swingable active fixing mode. When the resistance of the scraper plate 22 changes during operation, it can produce a temporary tilt, and it will be reset immediately after the large resistance is removed. Ensure that it always maintains a vertical state under normal operation; then the water level measuring tube 13 is installed, and the water level measuring tube 13 is extended into the water. When the water level is normal, ensure that the toggle piece 135 is located between the two contact pieces 134; then when the water level drops or rises, the signal is directly transmitted to the contact piece 134, and then the overall chain transmission mechanism is controlled to rise or fall accordingly to ensure that the scraper plate 22 effectively scrapes the scum on the water surface; the anti-falling wheel 10 and the support rail 23 are set to prevent the transmission chain 11 from being too long during use, resulting in excessive falling in the middle, which in turn affects the average insertion depth of the scraper plate 22;

[0042] Finally, by setting up the flushing mechanism, water is slowly pumped out to a certain extent, that is, the scraper plate 22 rotates half a stroke. In this embodiment, there are two scraper plates 22. Under the action of the cliff jumping cam 33 and the impact rod 30, the piston disc moves suddenly, and then the water sucked into the hook-shaped tube is quickly flushed away and shot toward the sprocket 3, thereby playing a cleaning role.

[0043] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An air flotation scraper capable of preventing a scraper from tilting, comprising a fixed frame (1) having an overall rectangular frame structure, wherein the fixed frame (1) has an overall rectangular structure, and the long side is a main stroke of the scraper (22), and guide rails (4) are arranged near four corners on the opposite sides of the two long sides of the fixed frame (1), and a chain transmission mechanism capable of sliding up and down is arranged between the four groups of guide rails (4), characterized in that: The chain transmission mechanism comprises a bearing seat (5) slidably connected to each group of guide rails (4), two sprocket connecting rods (12) parallel to each other and of equal height are rotatably connected between the four bearing seats (5), and the sprocket connecting rods (12) are parallel to the short side of the fixed frame (1), both ends of the sprocket connecting rod (12) are key-connected to sprockets (3), and the two sprockets (3) close to the long side of the fixed frame (1) are transmission-connected to the same transmission chain (11); A same bow-shaped pull bracket (9) is fixed between the top ends of the two bearing seats (5) close to the long sides of the fixed frame (1); The two pairs of transmission chains (11) are each provided with a clamping mechanism on one side opposite to the other, and the positions of the clamping mechanisms on the two transmission chains (11) are adapted to each other, the clamping mechanism comprising two outwardly extending extension pins (36) provided on the single-section transmission chain (11), the two extension pins (36) being sleeved with the same chain clamping plate (25), the two extension pins (36) being sleeved with mutually symmetrical clamping rods (28), and a tightening spring (38) being fixed near the top end on the opposite side of the two clamping rods (28), an L-shaped suspension rod (35) capable of swinging left and right being clamped between the two clamping rods (28), and the same height is provided on the two clamping rods (28). A scraper plate (22) is fixed between the L-shaped suspension rods (35) in the two groups of clamping mechanisms; a through hole (34) matching the outer diameter of the extended pin shaft (36) is opened in the middle of the clamp rods (28), and a wear-resistant slip ring is clamped in the through hole (34); an arc-shaped stop block is arranged between the bottom ends of the two clamp rods (28), and arc-shaped anti-slip blocks (39) matching the arc of the arc-shaped stop block are arranged near the bottom ends of the two opposite sides of the L-shaped suspension rod (35); by providing the arc-shaped stop block and the arc-shaped anti-slip block (39), it is ensured that the scraper plate (22) can swing with a certain amplitude and automatically reset after the external force is reduced; The fixed frame (1) has vertical rope rod frames (8) fixed in the middle of the long sides on opposite sides, and the top ends of the two rope rod frames (8) are rotatably connected to the same transmission rope winding rod (6), and the transmission rope winding rod (6) is located above two bow-shaped pull frames (9) near both ends and has a pull rope (7) wound in the same direction, and the ends of the pull rope (7) away from the transmission rope winding rod (6) are respectively fixed to the bow-shaped pull frames (9) on the same side; A driven gear is fixed to one end of the transmission rope winding rod (6) located at the front of the device, and a vertical self-locking electric push rod (20) is fixed to the side of the fixed frame (1) close to the oblique lower part of the driven gear, and a rack push rod (21) meshing with the driven gear is fixed to the top of the extension rod of the self-locking electric push rod (20); A water level measuring tube (13) extending into the water is fixed to the end of the fixed frame (1) by bolts, and the water level measuring tube (13) is composed of a vertical circular tube and a rectangular box at the top. A water-permeable hole (131) is opened on the outer wall of the circular tube near the bottom, and a floating block (132) is slidably connected in the circular tube. A top rod (133) is fixed to the top of the floating block (132), and a toggle plate (135) extending into the rectangular box is fixed to the top of the top rod (133). Contact plates (134) are provided on the side of the rectangular box at the upper and lower sides of the toggle plate (135), and the spacing between the two contact plates (134) is equal to 2-4 times the width of the toggle plate (135). A controller is connected via a signal line via the contact plate (134), and a signal output end of the controller is connected to a control end of the self-locking electric push rod (20).

2. The air flotation scraper capable of preventing the scraper from tilting according to claim 1, characterized in that: The two extended pins (36) are provided with a threaded groove at one end away from the transmission chain (11), and a top nut is screwed to the threaded groove. The chain clamp (25) is provided with protruding limit blocks (37) at both ends of the side close to the clamping rod (28).

3. The air flotation scraper capable of preventing the scraper from tilting according to claim 1, characterized in that: A material turning plate (27) is fixed on the side of the scraper plate (22) close to the forward side.

4. The air flotation scraper capable of preventing the scraper from tilting according to claim 1, characterized in that: Anti-fall wheels (10) are fixed at equal intervals on opposite sides of the two transmission chains (11), and the anti-fall wheels (10) are sleeved on the ends of the extended pin shafts (36); A same support rail (23) is fixed between the bottom ends of the bearing seats (5) below the two ends of the same bow-shaped puller (9), and the support rail (23) and the bow-shaped puller (9) on the same side are parallel to each other, and the anti-fall wheel (10) is rollingly connected above the support rail (23).

5. The air flotation scraper capable of preventing the scraper from tilting according to claim 1, characterized in that: One end of one of the sprocket connecting rods (12) near the front side passes through the fixed frame (1) and is fixed with a driven pulley (16), and a strip hole (17) matching the diameter and stroke of the sprocket connecting rod (12) is opened on the side of the fixed frame (1); An L-shaped plate seat (19) and a second mounting plate seat (24) are fixed to the top of the bow-shaped puller (9) on the side close to the front, and a main motor (18) is fixed to the L-shaped plate seat (19). A driving pulley is fixed to the top of the output shaft of the main motor (18), and the driving pulley and the driven pulley (16) form a transmission connection; A counterweight (2) is fixed to the other end of the same bow-shaped pull frame (9) as the L-shaped plate seat (19).

6. The air flotation scraper capable of preventing the scraper from tilting according to claim 5, characterized in that: A flushing mechanism is provided below the second mounting plate seat (24), and the flushing mechanism comprises a reduction gear box (15) fixed below the second mounting plate seat (24), the input shaft of the reduction gear box (15) being connected to the end of the output shaft of the main motor (18) via a coupling, and a cliff jumping cam (33) being fixed to the top of the output shaft of the reduction gear box (15), an impact rod (30) being slidably connected to the side surface of the second mounting plate seat (24) and abutting against the cliff jumping cam (33), and an annular retaining ring (32) being fixed to one end of the circumferential outer wall of the impact rod (30) close to the cliff jumping cam (33), and a return spring being provided between the annular retaining ring (32) and the second mounting plate seat (24); A water pumping impact pump barrel (14) parallel to the impact rod (30) is fixed to the top of the second mounting plate seat (24), and a sealing piston disc is slidably connected inside the water pumping impact pump barrel (14), and a push rod is fixed in the middle of the sealing piston disc, and a connecting rod (29) is fixed between the push rod and the end of the impact rod (30), and a water supply hose (26) is inserted into the end of the water pumping impact pump barrel (14) away from the push rod, and the end of the water supply hose (26) away from the water pumping impact pump barrel (14) is connected to a fixed pipe (31) extending into the water, and a section of the fixed pipe (31) arranged in the water is arranged in a hook shape, and the water outlet faces the sprocket (3), and the water outlet of the fixed pipe (31) is submerged in the water.

7. The air flotation scraper capable of preventing the scraper from tilting according to claim 6, characterized in that: A hook pipe is inserted into the bottom end of the fixed pipe (31), and the vertical height of the hook pipe can be adjusted.

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