KR100765086B1 - Scraper for easily removing a deposit in settling tank - Google Patents

Abstract

The present invention relates to a scraper (scratcher) for scraping and collecting the sediment settled in the settling tank (scraper), and automatically compensates for the deformation and wear of the blades, by raising the sediment in the settling tank by air pressure of the sediment collection operation The present invention relates to a scraper that is easy to remove the improved precipitate to significantly improve the efficiency.

The present invention, in the scraper (scraper) mounted on the settling tank of the settling tank (scraping tank) to scrape the sediment sinking to the bottom of the settling tank (scraper), provided with a plurality of rungs fixed to the settling tank through the connecting rod, A plurality of blades are mounted so as to be movable up and down, and the front side of the blade is provided with an air injection pipe is easy to remove the deposit is configured to scrape and collect the sediment with the blade while applying the air pressure to the bottom of the sedimentation tank to raise the bottom sediment To provide.

Settling tanks, settling tanks, scrapers, blades, air spray pipes, sediments

Description

SCRAPER FOR EASILY REMOVING A DEPOSIT IN SETTLING TANK}

1 is an appearance structural diagram showing a state in which a scrapper easy to remove sediment according to the present invention is mounted on a sedimentation tank car;

2 is a front view showing the main portion of the scraper easy to remove the sediment according to the present invention;

3 is a cross-sectional view along the line A-A shown in FIG.

4 is an exploded view showing in detail each part of the scraper easy to remove deposits according to the present invention;

5 is an external perspective view showing a state in which a scraper is mounted on a sedimentation tank car in a general sedimentation tank;

6 is a configuration diagram showing a state in which a scraper according to the prior art is mounted on the settling tank car;

7 is an explanatory view showing a case in which a precipitate cannot be collected from a scraper according to the related art.

       <Description of the symbols for the main parts of the drawings>

10 ..... crossbar 15 ..... home                 

17 ..... moving block 19 ..... protrusion

19a .... groove 20 ..... blade

23 ..... Sliding gate 40 ..... Air injection piping

43 ..... Air Injection Nozzle 46 ..... Air Injection Pipe

48 ..... Air spray tank 100 .... Sedimentation tank

110 .... coolant inlet 116 .... sludge discharge pump

120 ... rail 125 ... sedimentation tank

130 .... scraper

The present invention relates to a scraper (scratcher) for scraping and collecting the sediment settled in the settling tank (scraping tank), more specifically to compensate for this automatically when the deformation and wear of the blade, and to raise the precipitate in the settling tank by air pressure sediment The present invention relates to a scraper that is easy to remove the improved precipitate to greatly improve the efficiency of the collection operation.

In general, as shown in Figure 5, the sedimentation tank of the steel mill collects cooling water from various sources of cooling water, including a reproducing plant, setstles foreign substances such as slag, and separates them from the cooling water.

The sedimentation tank 100 is equipped with a coolant inlet pipe 110 on one side of the wall, the coolant discharge pipe 112 is provided on the other side, has a configuration that is provided with a sediment discharge pipe 114 and the discharge pump 116 and the like. . In addition, the rail 120 is located on the wall side of the settling tank 100, the settling tank car 125 is disposed on the rail 120 to reciprocate on the rail 120, the settling tank car 125 One side of the) is equipped with a scraper (130).

This scraper 130 has a rubber plate 132 extending downward to the bottom of the settling tank 100, as shown in Figure 5, the rubber plate 132 is the upper portion of the settling tank 125 through the connecting rod 134 It is rotatably connected to the side, the wire rope 140 is connected to the middle portion of the connecting table 134 to lift the connecting table 134 and the rubber plate 132, respectively. To this end, the upper side of the settling tank 125 is provided with a plurality of drive motor 142 and the drum 144 capable of forward and reverse rotation by the drive motor 142, the wire rope on the drum (144) 140 is connected is configured to lift or release the connecting rod 134. In addition, the limit switch 150 is provided to detect the rising and falling of the connecting table 134.

When the settling tank 100 as described above is the coolant is introduced into the sediment is settled, it is collected to one side of the settling tank 100, in this case, the drive motor 142 is operated to one side of the settling tank 100 When the rubber plate 132 of the scraper 130 is lowered and the settling tank 125 is advanced, the rubber plate 132 pushes the precipitate 160 to one side pit 162 of the settling tank 100. In this operation, when the sediment 160 is wrapped in the inner pit 162 of the sedimentation tank 100, it is separately collected through the sediment discharge pipe 114 and the discharge pump 116.

On the other hand, when the settling tank 125 in this process to return to the initial position, when the drive motor 142 reversely rotated in the opposite direction to the above, the settling tank 134 through the wire rope 140 100) lifted up from the bottom, and in this state, the settling tank 125 is retracted to return to the original home position, and the rubber plate 132 of the scraper 130 is lowered to collect the precipitate 100 as described above. Do the work.

The conventional problem in this process is the wire rope 140 is broken, or the back and forth movement of the trolley, the connecting rod 134 is easily deformed due to the sliding of the wheel wheel (125a), the connecting rod 134 is thus When deformed, the rubber plate 132 of the scraper 130 mounted on the lower end of the connecting rod 134, as shown in Figure 6, the bottom edge of the rubber plate 132 is not uniformly in contact with the bottom of the settling tank 100, Therefore, it causes difficulties in the collection work of the precipitate (100).

In more detail, since the sedimentation tank car 125 is advanced in the state in which the rubber plate 132 scrapes only one bottom of the sedimentation tank 100, the collection operation of the sediment 160 may not be efficiently performed. 132 is easily damaged because only one side of the floor touches. Therefore, the replacement cycle of the scraper 130 is frequent, the maintenance work load is greatly increased.

In addition, the more serious is that the rubber plate 132 on one side in such a state that the operation is repeated, such as the time after the sediment 160 is fixed to the bottom of the settling tank 100 is not removed by the rubber plate in this portion (132) had a problem that is further damaged.

The present invention is to solve the above-mentioned conventional problems, the purpose is to compensate for this automatically even when the connecting rod is deformed and the deformation and wear of the blade to adhere to the bottom of the sedimentation tank can be easily scraped sediment collection It is to provide a scraper that is easy to remove the improved sediment to increase the efficiency of the sediment collection operation by raising the sediment in the sedimentation tank by air pressure.

In order to achieve the above object, the present invention, in the scraper (scraper) is mounted on the settling tank of the settling tank (settling tank) to scrape and collect the sediment settled on the bottom of the settling tank, a plurality of fixed through the connecting rod to the settling tank It is provided with a crossbar, each of the plurality of blades are mounted to move up and down, the front side of the blade is provided with an air injection pipe is applied to the bottom of the sedimentation tank by applying air pressure to the bottom sediment while collecting the sediment with the blade to collect By providing a scraper easy to remove the precipitate, characterized in that configured to.

Hereinafter, the present invention will be described in more detail with reference to the drawings.

Scraper 1 easy to remove the precipitate according to the invention is mounted on the settling tank 125 running on the upper side of the settling tank (settling tank 100), as shown in detail in Figs. 100) scrapes and collects the sediment (160) settled on the floor.

The present invention has a plurality of crossbars 10 fixed to the settling tank 125 through the connecting rod 134 for this purpose, the crossbar 10 is a structure in which a plurality of blades 20 are each mounted to be movable up and down Has

The crosspiece 10 is arranged side by side at a predetermined interval up and down, the both ends are fixed to the bracket 12 provided at the lower end of the connecting table 134, respectively. In addition, the crossbar 10 forms guide grooves 15 having a 단면 -shaped cross section in the longitudinal direction as shown in FIG. 4, and the guide groove 15 is opened to one side of the crossbar 10.

In addition, the guide groove 15 has a plurality of moving blocks 17 having a shape corresponding to the guide groove 15, and a plurality of jaws are fitted into the guide grooves 15, and the blades 20 are formed in the moving block 17. They are fitted to be movable up and down, respectively. As shown in detail in FIG. 4, the movable block 17 has a structure that is movable by being inserted into the guide groove 15, and has a protrusion 19 exposed through the opening of the guide groove 15. Grooves 19a are formed in the grooves 19 so as to face each other so that the sliding gate 23 of the upper side of the blade 20 is inserted into the grooves 19a, and the sliding gate 23 is formed from the grooves 19a. In order to prevent the falling off the head portion 23a is enlarged is formed on the top.

In addition, a plurality of threaded holes 25 extending from the top surface of the crosspiece 10 to the guide groove 15 are processed at the top edge of the crosspiece 10, and fixing screws 27 are formed in these screw holes 25. Of the fixing screw 27 pressurizes the upper end of the movable block 17 so that each movable block 17 in the guide groove 15 of the crosspiece 10 is screwed together to extend toward the guide groove 15. Is to be fixed.

On the other hand, the blade 20 is made of a rubber plate piece is fixed to be detachable by a plurality of bolts 30 to the lower side of the sliding gate (23).

As such, the crosspiece 10 and the blade 20 are connected to each other through the sliding gate 23 and the moving block 17, and the blade 20 is connected to the moving block 17 through the sliding gate 23. By being able to move about with respect to the lower end of each blade 20 is configured to always contact the bottom of the settling tank (100).

Meanwhile, the moving blocks 17 mounted on the plurality of cross bars 10 are formed with different lengths of the protrusions 19 for each cross bar 10, as shown in FIGS. 2 and 3. The protrusions 19 are formed to have a longer length than the protrusions 19 of the movable block 17 mounted on one side of the crosspiece 10, and thus longer than the protrusions 19 of the movable block 17 mounted on the other side of the crosspiece 10. The blades 20 mounted in the grooves 19a of the 19 are smaller than the blades 20 mounted in the grooves 19a of the projections 19 formed shorter, as shown in FIG. 3. Protruding to the side, such that the front blades 20 and the blades 20 which are not protruded are alternately arranged in turn with each other, and the edges of both ends of these blades 20 are partially overlapped to collect the sediment 160. Sedimentation through the edges of the blade 20 during operation And to block leakage of water 160.

On the other hand, the air injection pipe 40 is provided on the front side of the blade 20, the air injection pipe 40, both ends thereof support the support 41 on the bracket 12 of the connection table 134 It is fixed through, the front side forms a plurality of air injection nozzles 43, one side of the air injection pipe 40 is made of a flexible pipe (Flexible Pipe) having an automatic opening and closing valve (not shown) 46 is connected to the air tank 48 is supplied with high-pressure air to apply the air pressure to the bottom of the settling tank 100 to float the bottom sediment 160.

The present invention configured as described above operates as follows.

First, when the driving motor 142 provided in the settling tank 125 is operated to lower the connecting rod 134 to one side of the settling tank 100 to lower the scraper 1 of the present invention, and the settling tank 125 is advanced. The blade 20 pushes the precipitate 160 to one side of the settling tank 100. In this process, when the settling tank 125 returns to the initial position, when the driving motor 142 reversely rotates in the opposite direction to the above, the settling tank 134 is connected to the settling tank 134 through the wire rope 140. Ascending from the bottom, in this state, the settling tank 125 is retracted to return to the original home position, and the blade 20 is lowered again to carry out the sediment 160 as described above.

When the wire rope 140 is broken in the operation process as described above, or when the connecting rod 134 is deformed due to slippage of the trolley wheel 125a or the like, the front and rear movement of the trolley 125 is lower, the lower end of the connecting rod 134. The blade 20 mounted on the one side may not evenly reach the bottom of the settling tank 100.

However, in the present invention, if any one or more blades 20 do not reach the bottom of the settling tank 100, this is because the sliding gate 23 is lowered in the groove (19a) of the movable block 17 by its own weight. By the bottom of the blade 20 is to reach the bottom of the settling tank (100). That is, the plurality of blades 20 are each separated from each other, and the lifting and lowering is made by the sliding gate 23, respectively, the lifting and lifting is free.

In addition, during the collection operation of the sediment 160, a small amount of high-pressure air of about 3 to 8 kg / cm ² is injected intermittently from the nozzle 43 of the air injection pipe 40 to the bottom of the sedimentation tank 100. By collecting the sediment 160 from the bottom of the sedimentation tank 100 in the floating state it can further increase the efficiency of the sediment collection operation.

As such, when a small amount of high-pressure air is intermittently sprayed onto the precipitate 160, the precipitate 160 is not widely spread by its own weight, and the precipitate is separated from the bottom by only the impact force of the high pressure air, which is somewhat elevated. It is maintained in the state, in this state, the blade 20 is to collect it by pushing it.

On the other hand, after the sediment collection operation is performed once, when the settling tank 125 is returned to the original position, when the connecting rod 134 is raised by the drive motor 142, the sliding gate in the moving block 17 23 are all lowered and supported by the head 23a, and thus, the return of the settling tank 125 proceeds while the sliding gate 23 and the blades 20 are both lowered and the sediment is collected again. In order to lower the connecting rod 134, the lowering position of the connecting rod 134 is fixed at the moment of contact with the limit switch 150. At this time, all the lower ends of the blades 20 reach the bottom of the settling tank 100 so that the sliding gate 23 is slightly lifted up in the recesses 19a to form a raised state. The sediment car 125 is advanced in contact with the bottom of all the 100 is to continue the collection work of the sediment.

In addition, the blades 20 are formed so that the edges of both sides of the blades overlap in a zigzag manner so that the edges of the blades 20 are formed in a straight line during the collection operation of the sediment. To prevent leakage of sediment.

As described above, according to the present invention, even when the connecting rod 134 is deformed and the blade 20 is deformed and worn out, the sliding gate 23 automatically descends in the moving block 17 to compensate for this, and the sedimentation tank ( By keeping the bottom of the blade 20 in close contact with the bottom of the 100, it is always easy to scrape and collect the precipitate 160.

In addition, the sediment 160 is raised in the sedimentation tank 100 by air pressure, thereby preventing the sedimentation tank from being fixed to the bottom of the sedimentation tank. Thus, an improved effect is obtained to further improve the efficiency of sediment collection work.

Claims (5)

In the scraper (scraper) is mounted on the sedimentation tank (125) of the settling tank (scraper) to scrape and collect the sediment (160) settled on the bottom of the settling tank (100), A plurality of crossbars 10 are fixed to the settling tank 125 through a connecting rod 134, and the plurality of blades 20 are mounted on the crossbars 10 so as to be movable upward and downward, respectively, and the blades 20. The front side of the) is provided with an air spray pipe (40) is applied to the bottom of the settling tank 100, the scrapper easy to remove the deposit, characterized in that it is configured to scrape and collect the sediment with the blade (20) while floating the bottom sediment. According to claim 1, The crosspiece 10 is formed in the longitudinal direction of the guide grooves 15 of the X-shaped cross section, the guide groove 15 is opened to one side of the crosspiece 10, the guide groove ( 15, a plurality of movable blocks 17 having a shape corresponding to the plurality of jaws are fitted into a plurality of jaws, so that the blades 20 can be moved up and down on the movable blocks 17. Easy to remove sediment, characterized by the fitted scraper. According to claim 2, The movable blocks 17 respectively mounted on the crossbar 10 is formed of a different length of the projection 19 for each crossbar 10, the movable block mounted to the crossbar 10 of one side ( The blade 20 mounted in the groove 19a of the protruding portion 19 formed by the longer length of the protruding portion 19 of the moving block 17 mounted on the crosspiece 10 on the other side than the protruding portion 19 of the 17 is formed. They are protruded toward the air injection pipe 40 rather than the blades 20 mounted on the grooves 19a of the shortly formed protrusions 19, and the blades 20 are alternately disposed to alternate with each other. Easy scraper. The method of claim 3, wherein the edges of both ends of the blades 20 are partially overlapped with each other to facilitate sediment removal, characterized in that configured to block the leakage of sediment through the corners of the blade 20 during the collection operation of the sediment. One scraper. According to claim 1, wherein the air injection pipe 40 of the settling tank 100 is intermittently injected by a small amount of high-pressure air of 3 to 8kg / cm ² from the nozzle 43 to the bottom of the settling tank 100 Scrap removal easy scraper, characterized in that configured to collect it from the bottom to raise the precipitate 160 from the bottom.

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