CN220201717U - Sludge treatment device for removing gravel and suspended matters - Google Patents

Abstract

The utility model discloses a sludge treatment device for removing gravel and suspended matters, which comprises a stirring tank, a feeder, a slag extractor and a filtering mechanism, wherein the stirring tank is provided with a stirrer, a first slag hole and a second slag hole; the feeder is arranged at the upper end of the stirring tank and is communicated with the stirring tank; the slag extractor is connected with the first slag outlet; the filter mechanism comprises a storage tank, a filter vat and a circulating pump, wherein a feed inlet is formed in the bottom of the storage tank and communicated with the second slag outlet, an opening of the filter vat faces downwards and covers the feed inlet, the filter vat is suitable for filtering suspended matters, the feed end of the circulating pump is connected with the storage tank, and the discharge end of the circulating pump is connected with the stirring tank. The sludge treatment device for removing the gravel and suspended matters can remove the gravel and suspended matters in the sludge at the same time, has high purification efficiency, avoids the blocking condition in the subsequent treatment, and has a simple structure.

Description

Sludge treatment device for removing gravel and suspended matters

Technical Field

The utility model relates to the technical field of sludge treatment, in particular to a sludge treatment device for removing gravel and suspended matters.

Background

With the improvement of national environmental awareness, the urban sewage treatment industry is rapidly developed, the yield of urban sludge is increased, and the problems of sludge disposal, development and utilization are focused on. The purification treatment technology of the sludge is well developed, so that the sludge is possible to be used as a fuel for agriculture, incineration and other treatment methods. One important process in sludge treatment is to break up the sludge and remove impurities such as gravel and suspended matters, namely sludge beating treatment.

The conventional sludge pulping device can only remove the gravel at the bottom in the sludge, and a large amount of suspended matters such as leaves, branches, plastic bags, plastic films, cloth strips, colloidal particles, wood blocks and the like are also present in the sludge, so that the suspended matters can block a pipeline and a conveying pump in subsequent treatment, and equipment is damaged. Therefore, there is a need to develop a device that can remove both grit and suspended matter.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the sludge treatment device for removing the gravel and suspended matters can remove the gravel and suspended matters in the sludge at the same time, has high purification efficiency, avoids the blocking condition in the subsequent treatment, and has a simple structure.

According to an embodiment of the present utility model, a sludge treatment apparatus for removing gravel and suspended solids includes: the stirring tank is provided with a stirrer, a first slag hole and a second slag hole, the first slag hole is formed in the bottom of the stirring tank, and the second slag hole is formed in the upper side of the first slag hole; the feeder is arranged at the upper end of the stirring tank and is communicated with the stirring tank; the slag extractor is connected with the first slag outlet; the filtering mechanism comprises a storage tank, a filtering barrel and a circulating pump, wherein a feed inlet is formed in the bottom of the storage tank and communicated with the second slag hole, an opening of the filtering barrel faces downwards and covers the feed inlet, the filtering barrel is suitable for filtering suspended matters, the feed end of the circulating pump is connected with the storage tank, and the discharge end of the circulating pump is connected with the stirring tank.

The technical scheme at least has the following beneficial effects: the sludge is conveyed into the stirring tank by the feeder and mixed with water, the sludge is stirred and scattered by the stirrer to form slurry, gravel in the sludge is sunk and discharged from the slag extractor through the first slag outlet, suspended matters in the sludge are suspended in the slurry, the suspended matters enter the storage tank along with the slurry through the second slag outlet and the feeding port under the action of the circulating pump, the suspended matters are collected in the filtering tank under the filtering action of the filtering tank, the slurry is pumped back to the stirring tank, and the suspended matters in the slurry are filtered out to the greatest limit, so that the gravel and the suspended matters in the sludge are removed simultaneously, the purifying efficiency is high, the condition that equipment is damaged due to the fact that the pipeline or the conveying pump is blocked by the gravel and the suspended matters in subsequent treatment is avoided, the whole structure is simple and compact, the manufacturing cost is low, and the industrial application is easy to realize.

According to some embodiments of the utility model, a check valve is provided at the opening of the filter vat, said check valve allowing one-way entry of suspended matter into the filter vat via the feed opening.

According to some embodiments of the utility model, the check valve includes a fixed rod provided to the filter tub and arranged in an axial direction of the filter tub, and a valve plate slidably mounted to the fixed rod, and the valve plate may cover an opening of the filter tub.

According to some embodiments of the utility model, the filter mechanism further comprises a lifter connected to the filter vat and adapted to raise or lower the filter vat.

According to some embodiments of the utility model, the filter basket includes a filter screen disposed around the feed port and an upper cover removably attached to an upper end of the filter screen.

According to some embodiments of the utility model, a liquid level alarm is provided in the storage tank, the liquid level alarm being located above the filter vat, the liquid level alarm being configured to be triggered when the liquid level is below the position of the liquid level alarm.

According to some embodiments of the utility model, a communicating vessel is connected between the storage tank and the stirring tank, two ends of the communicating vessel are respectively connected with the feed inlet and the second slag outlet, and the communicating vessel is provided with a flow valve for adjusting the flow rate passing through the communicating vessel.

According to some embodiments of the utility model, the feeder comprises a first screw conveyor cylinder and a hopper, the hopper is arranged at the feeding end of the first screw conveyor cylinder, and the discharging end of the first screw conveyor cylinder is connected with the stirring tank.

According to some embodiments of the utility model, the slag extractor is configured as a second screw conveyor drum, the second screw conveyor drum is arranged obliquely upwards, and the discharge end of the second screw conveyor drum is higher than the feed end, and the feed end of the second screw conveyor drum is connected with the first slag outlet.

According to some embodiments of the utility model, the stirring tank is further provided with a slag discharge pipe, which is connected with the first slag hole and provided with a switch valve.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

FIG. 1 is a schematic view of a sludge treatment apparatus according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a filtering mechanism according to an embodiment of the present utility model.

Reference numerals:

a stirring tank 100; a stirrer 110; a first tap hole 120; a second tap hole 130; a slag discharging pipe 140; a switch valve 150;

a feeder 200; a first screw conveyor 210; a hopper 220;

a slag extractor 300;

a filter mechanism 400; a storage tank 410; a feed inlet 411; a filter tub 420; a filter screen 421; an upper cover 422; a circulation pump 430; a check valve 440; a fixing rod 441; a valve plate 442; a lifter 450; a liquid level alarm 460; a communicating vessel 470; a flow valve 480.

Detailed Description

Reference will now be made in detail to the present embodiments of the present utility model, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present utility model, but not to limit the scope of the present utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Referring to fig. 1 and 2, an embodiment of the present utility model provides a sludge treatment apparatus for removing gravel and suspended solids, including a agitation tank 100, a feeder 200, a slag extractor 300, and a filtering mechanism 400.

Referring to fig. 1, it will be understood that the agitation tank 100 has an inner cavity and is opened upward, the agitator 110 is provided in the agitation tank 100, the agitator 110 is disposed in the up-down direction of the agitation tank 100 and is rotated by a motor, and the sludge in the agitation tank 100 can be agitated and dispersed by the agitator 110. The stirring tank 100 is provided with a first slag hole 120 and a second slag hole 130, wherein the first slag hole 120 is positioned at the bottom of the stirring tank 100 for discharging sediment such as gravel, the second slag hole 130 is positioned at the side wall of the stirring tank 100 and positioned at a position lower than the middle of the stirring tank 100, the second slag hole 130 is positioned at the upper side of the first slag hole 120, and the second slag hole 130 is used for allowing the stirred mud and suspended matters thereof to pass through.

Referring to fig. 1, it can be understood that the feeder 200 is disposed at an upper end of the agitation tank 100 and is connected to an upper end opening of the agitation tank 100, and specifically, the feeder 200 includes a first screw conveyor 210 and a hopper 220, the first screw conveyor 210 is disposed in a horizontal direction, a discharge end of the first screw conveyor 210 is connected to an upper end opening of the agitation tank 100, the hopper 220 is in a large-down structure, the hopper 220 is disposed above the first screw conveyor 210, and a lower end of the hopper 220 is connected to a feed end of the first screw conveyor 210. Therefore, by pouring the sludge into the hopper 220, the sludge can be uniformly and continuously conveyed into the stirring tank 100 through the first screw conveying cylinder 210, so that automatic feeding is realized, the sludge is rapidly dispersed by the stirrer 110, and the sludge treatment efficiency is effectively improved.

Referring to fig. 1, it can be understood that the slag extractor 300 is disposed under the stirring tank 100 and connected with the first slag outlet 120, and in particular, the slag extractor 300 is disposed as a second screw conveyor drum, which is disposed obliquely upward, and the discharge end of which is higher than the feed end of the second screw conveyor drum, which is connected with the first slag outlet 120, so that the precipitate precipitated at the bottom of the stirring tank 100 can be uniformly and continuously discharged through the second screw conveyor drum to improve sludge treatment efficiency. It is easy to understand that the discharge end of the second screw conveying cylinder is generally higher than the liquid level of the slurry in the stirring tank 100, so that the second screw conveying cylinder is prevented from directly discharging the slurry, the design is reasonable, and the slag discharging reliability is improved.

Referring to fig. 1 and 2, it can be understood that the filtering mechanism 400 is provided at one side of the agitation tank 100, and in particular, the filtering mechanism 400 includes a storage tank 410, a filtering tub 420, and a circulation pump 430, the storage tank 410 having an inner cavity and being open upward, a feed inlet 411 being provided at a bottom of the storage tank 410, the feed inlet 411 being in communication with the second slag outlet 130, that is, the storage tank 410 being in communication with the agitation tank 100. The filter drum 420 has an inner cavity and is opened downward, and the peripheral wall of the filter drum 420 has a porous structure allowing the slurry to pass therethrough while preventing the suspended matters from passing therethrough, so that the filter drum 420 can filter the suspended matters in the slurry. The filter vat 420 is disposed in the storage vat 410 and is inversely fastened to the feed inlet 411, so that the slurry and suspended matter mixture entering the storage vat 410 from the stirring tank 100 through the second slag outlet 130 and the feed inlet 411 is first introduced into the filter vat 420, and the slurry can flow into the storage vat 410 through the porous structure of the filter vat 420, and the suspended matter is intercepted and collected in the filter vat 420, thereby realizing the filtration of suspended matter in the slurry. The circulation pump 430 is disposed on the upper side of the storage tank 410, the feeding end of the circulation pump 430 is connected with the storage tank 410, and the discharging end of the circulation pump 430 is connected with the stirring tank 100, so that the slurry in the storage tank 410 can be pumped back to the stirring tank 100 under the action of the circulation pump 430, and thus the circulation is realized, the continuous filtration is realized, and the purification efficiency is improved.

The sludge is conveyed into the stirring tank 100 by the feeder 200 and mixed with water, the sludge is stirred and scattered by the stirrer 110 to form slurry, gravel in the sludge is sunk and discharged from the slag extractor 300 through the first slag outlet 120, suspended matters in the sludge are suspended in the slurry, the suspended matters enter the storage tank 410 along with the slurry through the second slag outlet 130 and the feed inlet 411 under the action of the circulating pump 430, the suspended matters are collected in the filtering tank 420 under the filtering action of the filtering tank 420, the slurry is pumped back to the stirring tank 100, and the circulating is performed in such a way to filter the suspended matters in the slurry to the maximum limit, so that the gravel and the suspended matters in the sludge are removed simultaneously, the purifying efficiency is high, the condition that equipment is damaged due to the blocking of pipelines or conveying pumps by the gravel and the suspended matters in the subsequent treatment is avoided, the whole structure is simple and compact, the manufacturing cost is low, and the industrial application is easy to realize.

Referring to fig. 1 and 2, it can be understood that the check valve 440 is provided at the opening of the filter tub 420, and more particularly, the check valve 440 includes a fixing rod 441 and a valve plate 442, the fixing rod 441 is disposed in the filter tub 420 and is disposed in the axial direction of the filter tub 420, i.e., the fixing rod 441 is disposed in the up-down direction, the center line of the fixing rod 441 coincides with the center line of the filter tub 420, the valve plate 442 is slidably mounted to the fixing rod 441 in the up-down direction, the valve plate 442 is disposed corresponding to the opening of the filter tub 420 in the up-down direction, and the coverage of the valve plate 442 is larger than the opening, so that the valve plate 442 slides downward and can cover the opening of the filter tub 420 under the action of gravity. Under the influence of the circulation pump 430, the mixture of slurry and suspended matter can flush the valve plate 442, causing the valve plate 442 to move upward to open the opening of the filter basket 420 to filter suspended matter in the slurry. When the circulation pump 430 is stopped, the valve plate 442 moves downward and closes the opening of the filter vat 420 under the gravity action of the valve plate 442 itself and the suspended matter, thereby preventing the suspended matter from exiting the filter vat 420, i.e., the check valve 440 allows the suspended matter to enter the filter vat 420 in one direction through the feed port 411, so as to collect and clean the suspended matter, and the structure is simple and easy to implement.

Referring to fig. 1 and 2, it will be appreciated that the filtering mechanism 400 further includes a lifter 450, the lifter 450 may be connected to the filter vat 420 through a rope, when the suspended matters in the filter vat 420 are excessive, the circulation pump 430 may be turned off, the filter vat 420 may be lifted up by the lifter 450, the filter vat 420 may be taken out from the storage tank 410, so as to clean the suspended matters in the filter vat 420, to avoid blocking the porous structure of the filter vat 420, and after cleaning, the filter vat 420 may be replaced into the storage tank 410 by the lifter 450 to continue filtering, thereby improving efficiency.

Referring to fig. 1 and 2, it can be understood that the filter tub 420 includes a filter screen 421 and an upper cover 422, the porous structure is provided to the filter screen 421, the filter screen 421 is in a cylindrical structure and is disposed around the feed inlet 411, the upper cover 422 is detachably coupled to an upper end of the filter screen 421, for example, the upper cover 422 is coupled to the filter screen 421 by bolts, and the fixing rod 441 is coupled to the upper cover 422. Therefore, when the filter tub 420 is lifted up by the lifter 450 to clean suspended matters inside, the upper cover 422 may be detached, the suspended matters may be taken out or poured out from the upper end of the filter screen 421, or the check valve 440 may be detached together with the upper cover 422, so that the suspended matters may be poured out from the opening of the lower end, thereby facilitating cleaning. After cleaning, the upper cover 422 is reinstalled on the filter screen 421.

Referring to fig. 1 and 2, it will be appreciated that a liquid level alarm 460 is provided in the storage tank 410, the liquid level alarm 460 is provided on the inner wall of the storage tank 410 and above the filter vat 420, the liquid level alarm 460 is used to detect the slurry level in the storage tank 410, and when the slurry level is lower than the position of the liquid level alarm 460, the liquid level alarm 460 is triggered to indicate that the slurry level is too low. Therefore, when the suspended matters in the filter vat 420 are too much to cause the blocking phenomenon of the porous structure, the throughput of the slurry at the porous structure is reduced, and the circulating pump 430 normally pumps the slurry in the storage tank 410 back into the stirring tank 100 along with the operation of the circulating pump 430, so that the flow rate is unchanged, and the liquid level of the slurry in the storage tank 410 is reduced until the liquid level alarm 460 is triggered, thereby reminding the operator that the suspended matters in the filter vat 420 are too much and have the blocking phenomenon, so that the operator can clean the suspended matters in the filter vat 420 in time, and further the treatment efficiency is improved.

Referring to fig. 1, it can be understood that a communicator 470 is connected between the storage tank 410 and the stirring tank 100, that is, both ends of the communicator 470 are connected to the feed port 411 and the second slag hole 130, respectively, so that the storage tank 410 and the stirring tank 100 communicate with each other. The communication vessel 470 is provided with a flow valve 480, and thus, the flow rate of the communication vessel 470, i.e., the throughput of the slurry, can be adjusted by the flow valve 480, so that the flow rate at the communication vessel 470 can be adjusted according to the flow rate of the circulation pump 430 to make the slurry between the storage tank 410 and the agitation tank 100 in an equilibrium state, thereby avoiding the pumping of the storage tank 410 or the overflow of the slurry from the storage tank 410.

It will be readily appreciated that when the level alarm 460 is triggered, the circulation pump 430 and the flow valve 480 may be closed first, and then the filter vat 420 lifted by the lifter 450 to clean the suspended matter in time. Of course, the flow valve 480 is set as an electric control valve, and the liquid level alarm 460 is in signal connection with the circulating pump 430, the flow valve 480 and the lifter 450 through a control system (such as a control circuit board), so that when the liquid level alarm 460 is triggered, the circulating pump 430 and the flow valve 480 can be automatically controlled to be closed, and the lifter 450 is started to lift the filter vat 420, so that manual intervention is not needed, the degree of automation is improved, and the labor intensity of workers is reduced.

Referring to fig. 1, it can be understood that the stirring tank 100 is further provided with a slag discharging pipe 140, the slag discharging pipe 140 is connected with the first slag outlet 120, and the slag discharging pipe 140 is provided with an on-off valve 150. In general, the switch valve 150 is in a closed state, and the sediment is discharged through the slag extractor 300, and when the stirring tank 100 needs to be cleaned or the sediment is partially accumulated in the first slag outlet 120 and cannot be discharged through the slag extractor 300, the interior of the stirring tank 100 can be cleaned by opening the switch valve 150, so as to avoid blocking caused by accumulation of sediment for a long time.

Referring to fig. 1, the flow of sludge treatment using the sludge treatment apparatus: the sludge is transferred to the stirring tank 100 through the hopper 220 and the first screw conveyor 210, water is distributed according to a proper proportion, the sludge is scattered and stirred in the stirring tank 100 through the stirrer 110 to form sludge, sediment such as gravel and the like is deposited at the first slag outlet 120 of the stirring tank 100 and can be discharged through the slag extractor 300, and the suspended substances are suspended in the sludge. The slurry and suspended matter therein flow through the communication 470 to the filter cartridge 420 and the storage tank 410. The circulation pump 430 is started, the circulation pump 430 pumps the slurry in the storage tank 410 back to the stirring tank 100, so that the slurry and suspended matters therein enter the filter vat 420 through the feed inlet 411 and the check valve 440, the slurry flows out of the porous structure of the filter vat 420, and the suspended matters are blocked in the filter vat 420 to filter the suspended matters in the slurry, and the slurry is continuously filtered by the circulation. When the suspended matter in the filter tub 420 is accumulated to a certain amount, the throughput of the slurry at the porous structure is reduced due to the blocking part of the porous structure, while the flow rate of the circulation pump 430 is not changed, so that the liquid level in the storage tank 410 is lowered, when the liquid level is lowered to a position lower than the liquid level alarm 460, the liquid level alarm 460 is triggered, the circulation pump 430 and the flow valve 480 are closed, the lifter 450 is started, the lifter 450 lifts the filter tub 420 upward, the valve plate 442 moves downward and closes the bottom opening of the filter tub 420 under the gravity action of the valve plate 442 and the suspended matter, the suspended matter is prevented from falling out, and thus the filter tub 420 is taken out integrally, and the suspended matter in the filter tub 420 can be cleaned conveniently by removing the upper cover 422 and the check valve 440. After cleaning, the upper cover 422 and the check valve 440 are reinstalled, the filter cartridge 420 is returned to the storage tank 410 by the lifter 450, and the filter cartridge 420 is then reversely fastened to the feed inlet 411. Therefore, the method and the device have the advantages of realizing the simultaneous removal of the gravel and suspended matters in the sludge, having high purification efficiency, avoiding the condition that equipment is damaged due to the blockage of pipelines or conveying pumps and the like by the gravel and the suspended matters in the subsequent treatment, having simple and compact integral structure and low manufacturing cost, and being easy to realize industrialized application.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.

Claims (10)

1. A sludge treatment apparatus for removing gravel and suspended solids, comprising:

the stirring tank is provided with a stirrer, a first slag hole and a second slag hole, the first slag hole is formed in the bottom of the stirring tank, and the second slag hole is formed in the upper side of the first slag hole;

the feeder is arranged at the upper end of the stirring tank and is communicated with the stirring tank;

the slag extractor is connected with the first slag outlet;

the filtering mechanism comprises a storage tank, a filtering barrel and a circulating pump, wherein a feed inlet is formed in the bottom of the storage tank and communicated with the second slag hole, an opening of the filtering barrel faces downwards and covers the feed inlet, the filtering barrel is suitable for filtering suspended matters, the feed end of the circulating pump is connected with the storage tank, and the discharge end of the circulating pump is connected with the stirring tank.

2. The grit and suspension removal sludge treatment apparatus of claim 1, wherein: the opening of the filter vat is provided with a check valve which allows suspended matters to enter the filter vat through the feed inlet in one way.

3. The grit and suspension removal sludge treatment apparatus of claim 2, wherein: the check valve comprises a fixed rod and a valve plate, wherein the fixed rod is arranged on the filter vat and is axially arranged along the filter vat, the valve plate is slidably mounted on the fixed rod, and the valve plate can cover the opening of the filter vat.

4. A sludge treatment apparatus for removing gravel and suspended solids according to any one of claims 1 to 3, wherein: the filter mechanism further comprises a lifter connected with the filter vat and used for lifting or lowering the filter vat.

5. The grit and suspension removal sludge treatment apparatus of claim 4, wherein: the filter vat includes filter screen and upper cover, the filter screen is arranged around the feed inlet, the upper cover detachably connect in the upper end of filter screen.

6. The grit and suspension removal sludge treatment apparatus of claim 1, wherein: the storage tank is internally provided with a liquid level alarm, the liquid level alarm is positioned above the filter vat, and the liquid level alarm is configured to be triggered when the liquid level is lower than the position of the liquid level alarm.

7. The grit and suspension removal sludge treatment apparatus of claim 1, wherein: the storage tank with be connected with the intercommunication ware between the agitator tank, the both ends of intercommunication ware respectively with the feed inlet with the second slag notch is connected, the intercommunication ware is equipped with the flow valve, the flow valve is used for adjusting the flow through the intercommunication ware.

8. The grit and suspension removal sludge treatment apparatus of claim 1, wherein: the feeder comprises a first spiral conveying cylinder and a hopper, wherein the hopper is arranged at the feeding end of the first spiral conveying cylinder, and the discharging end of the first spiral conveying cylinder is connected with the stirring tank.

9. The grit and suspension removal sludge treatment apparatus of claim 1, wherein: the slag extractor is arranged into a second spiral conveying cylinder, the second spiral conveying cylinder is obliquely upwards arranged, the discharge end of the second spiral conveying cylinder is higher than the feed end, and the feed end of the second spiral conveying cylinder is connected with the first slag outlet.

10. The grit and suspension removal sludge treatment apparatus of claim 9, wherein: the stirring tank is also provided with a slag discharging pipe, and the slag discharging pipe is connected with the first slag outlet and is provided with a switch valve.