Concentrated solution back-spraying device

Abstract

The utility model discloses a concentrated solution back-spraying device, which comprises a concentrated solution filter box, a crushing box, a waste residue collecting box and an incinerator hearth, a first filter hopper, a second filter hopper and a third filter hopper are arranged in the concentrated solution filter box, a second auger is arranged at the bottom end in the concentrated solution filter box, one end of the second auger is connected with a third motor, and the other end of the second auger is connected with a second motor. According to the back-spraying device, a concentrated solution is filtered for multiple times through a plurality of filter screen hoppers, impurities obtained after filtering can be automatically recycled, the filtered concentrated solution can be precipitated, and liquid at the top of the concentrated solution is obtained and crushed, so that the impurities in the concentrated solution are crushed; after being filtered by the filter screen plate, the gas is conveyed to the annular cooling plate wrapping the outer wall of the hearth, so that the outer wall of the hearth can be cooled, and then the gas is sprayed out by the spray heads on the annular cooling plate to reduce the coking speed in the furnace.

Description

Technical Field

[0001] The utility model relates to the technical field of concentrated liquid back-spraying, in particular to a concentrated liquid back-spraying device. Background Art

[0002] The leachate produced by the municipal solid waste incineration plant is not a single process, but a combination of processes. Usually, these leachates are generated by anaerobic, membrane and nitrification and denitrification. Generally speaking, in the leachate, if the proportion of concentrated liquid exceeds 13% but does not exceed 30%, the leachate is in a state of extremely high pollutant concentration. For urban domestic waste, the most important part of achieving zero-discharge leachate is to scientifically and rationally treat the concentrated liquid. At present, many waste incineration plants in my country make concentrated liquid into lime slurry or use it on fly ash solidification in order to achieve a "zero discharge" scenario for wastewater. However, the above-mentioned methods can only eliminate part of the concentrated liquid, and there is no way to completely eliminate the concentrated liquid. Especially during the rainy season, the content of leachate will be much higher than usual, and it will become more difficult to scientifically and rationally treat the leachate. On this basis, a treatment method of spraying the concentrated liquid back into the furnace has emerged. Using this method to oxidize the concentrated liquid at high temperature will result in the possibility of "zero discharge" wastewater. Because the above method of treating leachate requires significantly lower operating costs than other methods; moreover, this method can also prevent the temperature of the incinerator furnace from being too high, thereby greatly reducing the rate of coking in the furnace, and ultimately reducing the phenomenon of furnace shutdown, and to a certain extent, more garbage is processed. During the use of the existing concentrated liquid back-spraying device, the concentrated liquid often contains large impurities, causing the nozzle to be blocked, seriously affecting normal use. The existing concentrated liquid cannot be filtered multiple times during back-spraying, and the fine impurities in the concentrated liquid cannot be broken and crushed. The concentrated liquid cannot be used to cool the outer wall of the furnace. The function is relatively simple, which affects normal use. For this purpose, a concentrated liquid back-spraying device is provided. Utility Model Content

[0003] The purpose of the utility model is to provide a concentrated liquid back-spraying device in view of the defects of the prior art, so as to solve the problems raised by the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a concentrated liquid back-spraying device, comprising a concentrated liquid filter box, a crushing box, a waste residue collection box and an incinerator furnace, wherein a first filter bucket, a second filter bucket and a third filter bucket are installed inside the concentrated liquid filter box, a second auger is provided at the bottom end of the concentrated liquid filter box, one end of the second auger is connected to a third motor, one side of the bottom of the concentrated liquid filter box is connected to the waste residue collection box through a sludge conveying pipe, an electromagnetic valve is installed on the sludge conveying pipe, a waste residue discharge pipe is connected to the top of the waste residue collection box, and the first filter is connected to the waste residue collection box. The inner sides of the filter bucket, the second filter bucket and the third filter bucket are all equipped with waste residue conveying pipes, the interior of the waste residue conveying pipe is provided with a first auger, one end of the first auger is equipped with a first motor, the other side of the concentrated liquid filter box is connected to the crushing box through a connecting pipe, a filter mesh plate is installed inside the crushing box, a reduction box is installed on the top of the crushing box, a second motor is installed on the top of the reduction box, a wall breaking machine tool is connected to the bottom of the reduction box, one side of the crushing box is connected to a cooling plate through a centrifugal pump, a nozzle is connected to the cooling plate, and the cooling plate is installed on the furnace of the incinerator.

[0005] As a preferred technical solution of the utility model, the first filter bucket, the second filter bucket, and the third filter bucket are all installed on the inside of the concentrate filter box by bolts, the filter holes on the first filter bucket are larger than the filter holes on the second filter bucket, and the filter holes on the second filter bucket are larger than the filter holes on the third filter bucket.

[0006] As a preferred technical solution of the utility model, one end of the waste slag conveying pipe is connected to the waste slag discharge pipe through a first connecting pipe, and a liquid inlet pipe is installed on the top of the concentrated liquid filter box, and a one-way valve is installed on the liquid inlet pipe.

[0007] As a preferred technical solution of the utility model, the third motor is mounted on the side of the concentrated liquid filter box by bolts, and the bottom of the concentrated liquid filter box is in a semicircular arc shape.

[0008] As a preferred technical solution of the utility model, the reduction box is installed on the top of the crushing box by bolts, the second motor is installed on the crushing box by bolts, and the top of the wall breaking machine tool is fixedly connected to the gear in the reduction box.

[0009] As a preferred technical solution of the present utility model, the first motor, the second motor, the solenoid valve, the third motor and the centrifugal pump are all electrically connected to the control box.

[0010] The beneficial effect of the utility model is that the back-spray device performs multiple filtering treatments on the concentrated liquid through multiple filtering net buckets, the impurities after the filtering treatment can be automatically recovered, the filtered concentrated liquid can be precipitated, and the liquid on the top of the concentrated liquid can be obtained for crushing treatment, so that the impurities in the concentrated liquid are crushed, filtered through the filter plate and then transported to the annular cooling plate wrapped on the outer wall of the furnace, which can not only cool the outer wall of the furnace, but also reduce the rate of coking in the furnace by spraying out through the nozzle on the annular cooling plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model.

[0012] In the figure: concentrated liquid filter box 1, crushing box 2, waste residue collection box 3, incinerator furnace 4, centrifugal pump 5, cooling plate 6, nozzle 7, first filter bucket 101, second filter bucket 102, third filter bucket 103, liquid inlet pipe 104, one-way valve 105, waste residue discharge pipe 106, waste residue conveying pipe 107, first motor 108, first connecting pipe 109, first auger 110, reduction box 201, second motor 202, filter screen plate 203, wall breaking machine tool 204, connecting pipe 205, sludge conveying pipe 301, solenoid valve 302, second auger 303, third motor 304. DETAILED DESCRIPTION

[0013] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0014] Example: See Figure 1The utility model provides a technical solution: a concentrated liquid back-spraying device, comprising a concentrated liquid filter box 1, a crushing box 2, a waste residue collection box 3 and an incinerator furnace 4, wherein a first filter bucket 101, a second filter bucket 102 and a third filter bucket 103 are installed inside the concentrated liquid filter box 1, a second auger 303 is provided at the bottom end of the concentrated liquid filter box 1, and a third motor 304 is connected to one end of the second auger 303, a bottom side of the concentrated liquid filter box 1 is connected to the waste residue collection box 3 through a sludge conveying pipe 301, an electromagnetic valve 302 is installed on the sludge conveying pipe 301, a waste residue discharge pipe 106 is connected to the top of the waste residue collection box 3, the first filter bucket 101, the second filter bucket 102 and the third filter bucket 103 are installed inside the concentrated liquid filter box 1, and a second auger 303 is provided at the bottom end of the concentrated liquid filter box 1, and a third motor 304 is connected to one end of the second auger 303, a bottom side of the concentrated liquid filter box 1 is connected to the waste residue collection box 3 through a sludge conveying pipe 301, and a solenoid valve 302 is installed on the sludge conveying pipe 301, a waste residue discharge pipe 106 is connected to the top of the waste residue collection box 3, The inner sides of the bucket 102 and the third filter bucket 103 are both installed with a waste residue conveying pipe 107, and a first auger 110 is arranged inside the waste residue conveying pipe 107, and a first motor 108 is installed at one end of the first auger 110. The other side of the concentrated liquid filter box 1 is connected to the crushing box 2 through a connecting pipe 205, and a filter screen plate 203 is installed inside the crushing box 2. A reduction box 201 is installed on the top of the crushing box 2, and a second motor 202 is installed on the top of the reduction box 201. A wall breaking machine tool 204 is connected to the bottom of the reduction box 201, and one side of the crushing box 2 is connected to the cooling plate 6 through a centrifugal pump 5. A nozzle 7 is connected to the cooling plate 6, and the cooling plate 6 is installed on the furnace 4 of the incinerator.

[0015] The first filter bucket 101 , the second filter bucket 102 , and the third filter bucket 103 are all installed on the inside of the concentrate filter box 1 by bolts. The filter holes on the first filter bucket 101 are larger than the filter holes on the second filter bucket 102 , and the filter holes on the second filter bucket 102 are larger than the filter holes on the third filter bucket 103 .

[0016] One end of the waste residue conveying pipe 107 is connected to the waste residue discharge pipe 106 through a first connecting pipe 109 . A liquid inlet pipe 104 is installed on the top of the concentrated liquid filter box 1 , and a one-way valve 105 is installed on the liquid inlet pipe 104 .

[0017] The third motor 304 is installed on the side of the concentrated liquid filter box 1 by bolts. The bottom of the concentrated liquid filter box 1 is in a semicircular arc shape. The third motor 304 drives the second auger 303 to rotate. The second auger 303 rotates to transport the precipitated sludge and impurities to the sludge conveying pipe 301. The solenoid valve 302 is opened to transport the sludge to the waste residue collection box 3.

[0018] The reduction box 201 is installed on the top of the crushing box 2 by bolts, the second motor 202 is installed on the crushing box 2 by bolts, and the top of the wall-breaking machine cutter 204 is fixedly connected to the gear in the reduction box 201.

[0019] The first motor 108, the second motor 202, the solenoid valve 302, the third motor 304 and the centrifugal pump 5 are all electrically connected to the control box, and the control box is used to control the first motor 108, the second motor 202, the solenoid valve 302, the third motor 304 and the centrifugal pump 5 to turn on the power and work.

[0020] Working principle: A concentrated liquid back-spraying device. When in use, the concentrated liquid enters the concentrated liquid filter box 1 through the liquid inlet pipe 104, and the concentrated liquid is filtered through the first filter bucket 101, the second filter bucket 102, and the third filter bucket 103 in the concentrated liquid filter box 1. The filter holes on the first filter bucket 101, the second filter bucket 102, and the third filter bucket 103 are reduced in size in sequence to achieve the purpose of graded filtration. The filtered liquid is precipitated in the concentrated liquid filter box 1, and the liquid in the middle of the concentrated liquid automatically flows into the crushing box 2 through the connecting pipe 205, and the second motor 202 works. This drives the gears in the reduction box 201 to rotate, thereby driving the wall breaker tool 204 to rotate at high speed, thereby breaking up the impurities remaining in the concentrated liquid, and then the centrifugal pump 5 works to transport the concentrated liquid filtered by the filter screen 203 to the cooling plate 6, and the cooling plate 6 is used to cool the outer wall of the incinerator furnace 4. At the same time, the concentrated liquid is sprayed out through the nozzle 7, which not only effectively treats the concentrated liquid, but also reduces the rate of coking in the furnace. The use of this equipment can effectively prevent impurities in the concentrated liquid from clogging the nozzle, causing uneven spraying and affecting normal use, and can also cool the furnace 4.

[0021] The back-spray device filters the concentrated liquid multiple times through multiple filter net buckets. The impurities after filtering can be automatically recovered. The filtered concentrated liquid can also be precipitated, and the liquid on the top of the concentrated liquid can be obtained for crushing, so that the impurities in the concentrated liquid are crushed, filtered through the filter plate and then transported to the annular cooling plate wrapped on the outer wall of the furnace. It can not only cool the outer wall of the furnace, but also spray out through the nozzle on the annular cooling plate to reduce the rate of coking in the furnace.

[0022] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A concentrated liquid back-spraying device, comprising a concentrated liquid filtering box (1), a crushing box (2), a waste residue collecting box (3) and an incinerator furnace (4), characterized in that: The concentrated liquid filter box (1) is internally installed with a first filter bucket (101), a second filter bucket (102) and a third filter bucket (103); a second auger (303) is provided at the bottom end of the concentrated liquid filter box (1); one end of the second auger (303) is connected to a third motor (304); one side of the bottom of the concentrated liquid filter box (1) is connected to a waste residue collection box (3) via a sludge conveying pipe (301); a solenoid valve (302) is installed on the sludge conveying pipe (301); a waste residue discharge pipe (106) is connected to the top of the waste residue collection box (3); waste residue conveying pipes (107) are installed on the inner sides of the first filter bucket (101), the second filter bucket (102) and the third filter bucket (103); A first auger (110) is provided inside the waste residue conveying pipe (107), a first motor (108) is installed at one end of the first auger (110), the other side of the concentrated liquid filter box (1) is connected to the crushing box (2) through a connecting pipe (205), a filter screen (203) is installed inside the crushing box (2), a reduction box (201) is installed on the top of the crushing box (2), a second motor (202) is installed on the top of the reduction box (201), a wall breaking machine tool (204) is connected to the bottom of the reduction box (201), one side of the crushing box (2) is connected to a cooling plate (6) through a centrifugal pump (5), a nozzle (7) is connected to the cooling plate (6), and the cooling plate (6) is installed on the furnace (4) of the incinerator.

2. A concentrated liquid back-spraying device according to claim 1, characterized in that: The first filter bucket (101), the second filter bucket (102), and the third filter bucket (103) are all mounted on the inside of the concentrate filter box (1) by means of bolts; the filter holes on the first filter bucket (101) are larger than the filter holes on the second filter bucket (102); and the filter holes on the second filter bucket (102) are larger than the filter holes on the third filter bucket (103).

3. A concentrated liquid back-spraying device according to claim 1, characterized in that: One end of the waste residue conveying pipe (107) is connected to the waste residue discharge pipe (106) via a first connecting pipe (109); a liquid inlet pipe (104) is installed on the top of the concentrated liquid filter box (1); and a one-way valve (105) is installed on the liquid inlet pipe (104).

4. A concentrated liquid back-spraying device according to claim 1, characterized in that: The third motor (304) is mounted on the side of the concentrated liquid filter box (1) by means of bolts, and the bottom of the concentrated liquid filter box (1) is in a semicircular arc shape.

5. A concentrated liquid back-spraying device according to claim 1, characterized in that: The reduction box (201) is mounted on the top of the crushing box (2) by means of bolts, the second motor (202) is mounted on the crushing box (2) by means of bolts, and the top of the wall-breaking machine cutter (204) is fixedly connected to the gear in the reduction box (201).

6. A concentrated liquid back-spraying device according to claim 1, characterized in that: The first motor (108), the second motor (202), the solenoid valve (302), the third motor (304) and the centrifugal pump (5) are all electrically connected to the control box.

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