JP6322742B1 - Cleaning system for non-waste water conveyor belt - Google Patents

Abstract

A cleaning water circulation type conveyor belt cleaning system that eliminates the need for conventional waste water processing is provided. SOLUTION: Conveyor belt cleaning means for cleaning a conveyor belt with powder falling by water, and washing water that is used for cleaning by the conveyor belt cleaning means and sludged containing the powder is introduced and dehydrated. , A powder collection means for collecting the powder component, a washing water storage means for collecting and storing the washing water from which the powder component has been collected via the powder collection means, and a washing water storage means for storing the washing water. The washing water is supplied to the conveyor belt washing means as new clarified washing water after being filtered through the filtration means. It was designed to circulate so as not to generate waste water to the outside. [Selection] Figure 1

Description

  The present invention relates to the configuration of a conveyor belt cleaning treatment system using water, more specifically, by providing a filtration and circulation function of sewage after cleaning, by allowing the cleaning water once used to be repeatedly used for new cleaning, The present invention relates to a configuration of a conventional wastewater-type conveyor belt cleaning system that eliminates wastewater.

  In coal-fired thermal power plants and steelworks, a large number of belt conveyors having a large transport capacity are used to transport coal, iron ore, and the like to a target location. As a matter of course, coal powder, ore powder and other powder fallen on those conveyor belt portions. In addition, there is a risk that these accumulated powders sometimes cause a fire.

  Therefore, conventionally, the dusts are cleaned by human hands (discharge work at regular intervals). However, it requires a lot of manpower and cost. For this reason, a conveyor belt cleaning device has been proposed in which a cleaning chamber with water is provided in a return side belt portion of a belt conveyor after completion of transport of coal or the like so as to perform automatic cleaning (for example, Patent Document 1 and Patent Document 2). See the configuration for

JP-A-9-255131 JP 9-328219 A

  However, in the case of the cleaning apparatuses described in Patent Documents 1 and 2, the dust after cleaning becomes sludge, which causes clogging of the cleaning apparatus (such as a recovery hopper). Therefore, it is necessary to periodically clean the cleaning device. In addition, the sludge that contains these water and sludge is separated into wastewater and dust in the drainage pit as a wastewater treatment facility, but there is a new way of treating the dust and wastewater generated in these drainage pits. It becomes a problem. The dust should be discharged with a vacuum car, etc., dehydrated and transported to a landfill, etc. The wastewater must be filtered through the drainage pit and discharged into sewage.

  In order to avoid clogging of the cleaning device, it is sufficient to increase the amount of cleaning water supplied at the time of the cleaning, but then the amount of final waste water also increases, and the drainage pit as a wastewater treatment facility is enlarged, Increase processing costs. Under such circumstances, a cleaning processing system having a cleaning device as disclosed in Patent Documents 1 and 2 is actually not widely used in practice.

  The present invention has been made in order to solve such a conventional problem, and has a function of filtering and circulating sewage after washing so that wash water once used can be repeatedly used for new washing. Thus, an object of the present invention is to provide a cleaning system for a non-waste water type conveyor belt that eliminates conventional waste water.

  In order to solve the above-described problems, the present invention includes the following problem solving means.

(1) The problem-solving means of the invention of claim 1 The problem-solving means of the present invention is a conveyor belt cleaning means for cleaning a conveyor belt on which powder falls with water, and is used for cleaning by the conveyor belt cleaning means. Washing water containing sludge and sludge is introduced and dehydrated to collect the dust component, and the washing water from which the dust component is collected is recovered via the dust collection unit. a cleaning water storage means for storing consists of a cleaning water supply means for supplying a washing water to the conveyor belt cleaning unit after filtration through a wash water filtration unit washing water stored in the washing water storage means, they Each means is configured so that the washing water sequentially circulates in a closed circuit, and the washing water storage means is configured as a washing water storage tank having a sedimentation basin separation function, and is supplied via the falling powder collection means. In washing water A washing system for a non-waste water-type conveyor belt that is separated by precipitating the components of powder falling, wherein the powder collection means comprises a flexible container bag having water permeability and a filtration function, and is compressed. The dehydration filtration station is equipped with a pressure dehydration filtration station, and after the pressure dehydration, the dehydration filtration station and the finishing dehydration station are free from natural dehydration. It is formed in an inclined sectional shape corresponding to the amount of dehydration generated at the lower side, deep on the dehydration filtration station side, shallow on the finish dehydration station side, and generated on the upper side. A water level detector is provided at a predetermined depth on the finishing dewatering station side, and the dewatering is performed. Piping for sludge component withdrawal over-the station side deepest portion, also it is characterized in that the return water returning a part of the wash water in the finishing dehydration station side bottom inclined surface pipe is disposed.

According to such a configuration, a closed circulation circuit for cleaning water is formed through a powder collecting means for collecting powder , a washing water storing means for storing washing water, a washing water filtering means , and a conveyor belt washing means. is the result in, makes the washing water constant amount stored in the cleaning water storage means so that it is possible to repeatedly use while filtering, it is not necessary to discharge the waste water after the conveyor belt cleaning outside. Therefore, the problem of waste water treatment as in the prior art is solved, and the conveyor belt can be washed in a state almost similar to no water supply within a certain period.

In this case , if the storage capacity of the cleaning water storage means is increased and the supply capacity of the cleaning water supply means is increased accordingly, a sufficient amount of cleaning water can be circulated, and the cleaning unit of the cleaning means The cleaning function and the cleaning ability are improved, the degree of sludge formation of the cleaning water after cleaning is reduced, and the viscosity thereof is lowered, so that the conventional cleaning means is not easily clogged.

Moreover, in the problem-solving means of the present invention, the dust collection means comprises a flexible container bag having a water permeability and filtration function, and is pressure dehydrated at a dehydration filtration station equipped with a compression means. After pressure dehydration, it is dehydrated naturally at the finishing dehydration station. Therefore, and not only function to improve the recovery of落粉components in the wash water were sludge by washing, a pressure dewatering in dewatering filtration station, a cleaning water filtration function of two steps natural dehydration in the finish dewatering station .

According to such a configuration, the above-mentioned dust collection means acts more effectively as a primary filtration means for the sludge-washed washing water, while the washing water filtration means on the washing water storage means side is the first filtration means. It comes to act as a secondary filtering means, and as a total, a more accurate filtering function (and a washing water recovery function) can be realized.

Furthermore, in the problem-solving means of the present invention, the washing water storage means is configured as a washing water storage tank having a sedimentation basin separation function, and the falling powder component in the washing water supplied via the falling powder collecting means is The precipitate is separated.

According to such a configuration, the dewatering component remaining in the used washing water in which the sludge component is effectively dewatered and the sludge components are effectively collected in the washing water storing means portion is further dehydrated in the two-stage dehydration process by the dust collection means. Since the precipitate is reliably separated and the washing water filtering means in the washing water storage means can be made to function as a more accurate filtering means, the washing water finally supplied to the conveyor belt washing means The degree of clarity is greatly improved.

  As a result, the filtration performance of the cleaning water purification circuit described above is further improved, and washing water with higher clarity can be obtained.

In this case, the washing water storage tank is below the dewatering filtration station and the finishing dewatering station of the dust collection means, deep on the dewatering filtration station side, shallow on the finishing dewatering station side, and on the upper side. It is formed in an inclined cross-sectional shape corresponding to the amount of dehydration that occurs, and the washing water filtering means is provided at a predetermined depth on the dehydration filtration station side, and a water level detection device is provided at a predetermined depth on the finishing dewatering station side. A pipe for extracting sludge components is provided at the deepest part, and a water return pipe for returning a part of the washing water to the bottom inclined surface on the finishing dewatering station side is provided.

According to such a configuration, the dewatering filtration station side has a large amount of dehydration and a large amount of powder components remaining in the used wash water, and the depth of the wash water storage tank is increased to cope with the accumulation of sludge that occurs over a long period of time. At the same time, a pipe for extracting sludge components is provided at the deepest portion thereof to enable periodic collection of sludge. On the other hand, the amount of dewatering is small and the amount of dust falling in the used washing water is small. The bottom on the finishing dewatering station side has a shallow inclined surface, and a water return pipe for returning a part of the washing water is provided. Enables cleaning after drawing.

The washing water filtering means is provided at a predetermined depth where the depth is deep and the amount of dehydration is large, and is not affected by sludge on the side of the dewatering filtration station, but the water level detection device is influenced by the amount of dehydration from above. Is provided at a predetermined depth on the finishing dewatering station side where the water surface level is stable.

(2) Problem solving means of the invention of claim 2 The problem solving means of the invention is the problem solving means of the invention of claim 1, wherein the washing water supply means is constituted by an electric pump and is intermittently controlled by the control means. It is characterized by being driven.

  According to such a configuration, clogging at the sludge discharge port portion of the conveyor belt cleaning means can be made difficult to occur, and the amount of used cleaning water flowing into the powder collection means having a cleaning water filtering function can be reduced. Therefore, the filtration load in the same part can be reduced.

  As a result, the operation efficiency of the cleaning processing system is improved.

(3) Problem solving means of the invention of claim 3 The problem solving means of the invention is the problem solving means of the invention of claim 1 or 2, wherein the conveyor belt cleaning means, the powder collection means, the washing water storage means, the cleaning The water filtration means, the washing water supply means, the pressurization means, the dewatering filtration station, and the finishing dewatering station are integrated into the apparatus main body and can be transferred as a single apparatus .

In this way, the conveyor belt cleaning means, falling powder collection means, cleaning water storage means, cleaning water filtration means, cleaning water supply means, pressurization means, dewatering filtration station, finishing dewatering station, etc. When equipment necessary for cleaning is integrated and configured as a single no-waste water cleaning treatment device, the device can be moved by a vehicle, etc., and fixed places such as thermal power plants and steelworks Not limited to this, it can be installed and used in any place where a cleaning process is required, such as a construction site.

  As described above, according to the present invention, once used cleaning water can be repeatedly used as new cleaning water, there is no need for conventional waste water treatment, and a waste water type cleaning processing system is realized. be able to.

  As a result, a large wastewater treatment facility like the conventional cleaning treatment system becomes unnecessary, and the cost can be greatly reduced. In addition, there are no restrictions on the installation location.

  As a result, it is possible to construct a unit structure that can be moved by a vehicle, etc., as well as fixed places such as the thermal power plants and steelworks already mentioned. It can be installed and used arbitrarily. Therefore, the spread of the device is promoted.

1 is a system diagram showing an overall apparatus configuration of a non-waste water type conveyor belt cleaning processing system according to an embodiment of the present invention. It is an expanded sectional view which shows the structure of the conveyor belt washing | cleaning apparatus (conveyor belt washing | cleaning means) part of the non-waste water type conveyor belt washing | cleaning processing system in the embodiment. It is a front view which shows the structure of the sludge collection | recovery apparatus (dusting component collection | recovery means) and the washing water storage tank (washing water storage means) part of the non-waste water type conveyor belt washing | cleaning processing system in the embodiment. It is a top view which shows the structure of the sludge collection | recovery apparatus (fallen powder component collection | recovery means) part of the non-waste water type conveyor belt washing | cleaning processing system in the embodiment. It is a left view which shows the structure of the sludge collection | recovery apparatus (fallen powder component collection | recovery means) part of the non-waste water type conveyor belt washing | cleaning processing system in the embodiment. It is the same front view as FIG. 2 which shows the spin-dry | dehydrated and the filtration state (flexible container bag compression state) in the sludge collection | recovery apparatus (powder component collection | recovery means) of the non-waste water type conveyor belt washing | cleaning processing system in the embodiment. It is explanatory drawing which shows the flexible container bag carrying-out state after completion | finish of the dehydration filtration operation | work in the sludge collection | recovery apparatus (fallen powder component collection | recovery means) part of the non-waste water type conveyor belt washing | cleaning processing system in the embodiment. It is the schematic which shows the structure of the control system of the non-waste water type conveyor belt washing | cleaning processing system in the embodiment.

  Hereinafter, the configuration and operation of a no-waste water conveyor belt cleaning system according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings of FIGS.

<System overall configuration: Fig. 1>
That is, first, FIG. 1 shows a configuration of the entire conveyor belt cleaning processing system according to the embodiment of the present invention, and reference numeral 50 denotes a belt conveyor to be cleaned. The belt conveyor 50 is a belt conveyor having a large conveyance capacity used for conveying coal or iron ore to a target place in a coal-fired thermal power plant or an ironworks, for example. The belt conveyor 9 is combined and conveyed to a target location.

  This belt conveyor 50 is also provided with a pair of belt wheels at both the carry-in side and the carry-out side as in the case of a general belt conveyor, and an endless belt is circulated between them, and the upper belt is used as the conveyor belt 51 and the lower belt. Is a return belt 52, and a number of idlers are installed between them to support the conveyor belt 51 (the belt wheel on the carry-in side and the intermediate idler are not shown). And as already stated, falling powder, such as coal powder and ore powder, accumulates in the conveyor belt 51 portion of the conveyor belt 50 and returns to the carry-in side while adhering to the return belt 52 side. Then, by repeating this, as it is, the dust particles are gradually accumulated below the return belt 52.

  Therefore, in this embodiment, a conveyor belt cleaning device (conveyor belt cleaning means) 5 is provided at the return side portion of the return belt 52 of the belt conveyor 50, and the return is made through the cleaning chamber 53a of the conveyor belt cleaning device 5. The belt 52 is returned to the carry-in end side, the powder falling on the return belt 52 is removed, and the belt 52 is not dropped downward.

<Conveyor belt cleaning device configuration: FIG. 2>
For example, as shown in detail in FIG. 2, the conveyor belt cleaning device 5 has a roof hopper structure with a slit 53c, 53c for allowing the return belt 52 to pass through the upper portion of the side wall as shown in the drawing. A cleaning chamber 53a is formed, and in the cleaning chamber 53a, a cleaning water spray nozzle 54a (for cleaning the belt) that sprays cleaning water W toward the lower surface of the return belt 52 that passes through the cleaning chamber 53a. ), 54b (for cleaning in the cleaning chamber). Then, the return belt 52 is passed through the cleaning chamber 53a as described above, and when cleaning the conveyor belt, the cleaning water W is strongly sprayed from the cleaning water spray nozzle 54a to the back surface (the front surface during transport) of the return belt 52, and the return belt 52 Wash off the dust adhering to the surface.

  In this way, the powder falling downward from the belt surface is mixed with the cleaning water W to become a sludge S having a predetermined viscosity, and is collected together with the cleaning water W at the hopper portion at the bottom of the cleaning chamber 53, and at the lower end of the hopper portion. It is discharged from the sludge discharge port 53b. The sludge discharge port 53b is connected to a duct hose 55 that extends to the sludge recovery device (fallen component recovery means) 1 described later, and the used contaminant hose is cleaned to the sludge recovery device 1 via the duct hose 55. Water W and sludge S are supplied. In the following description, all the powdered components (sludged powdered components) sludged (mixed with) the contaminated cleaning water W after use are simply abbreviated as sludge S. I will decide.

<Structure of sludge recovery device: FIGS. 3 to 5>
As shown in FIGS. 3 to 5, for example, the sludge collection device 1 includes a flexible container bag 10 made of cloth that has water permeability at a predetermined mesh value as sludge collection means (hereinafter simply referred to as a flexible container bag) 10. The washing water W and sludge S after use are introduced into the flexible container bag 10 as they are, and then the flexible container bag 10 is compressed by a predetermined compression means (described later), so that the washing water W can be produced from the sludge S. As long as it is discharged (dehydrated), only the sludge S is collected in the form of a cake (block).

  This sludge collection device 1 has a washing water storage tank (washing water storage means) 60 and various piping systems 65, 69, 67, 71, 73, 81, and 82 (see FIG. 1) on the inside, and a flexible container bag for carrying on the upper surface side. The conveyor belt cleaning device main body (hereinafter simply referred to as the “device main body”) 21 provided with the first and second transport rollers 25 and 26 and the lifting cylinder 33 on the side portion is located at a part from the front portion of the upper part and integrated therewith. It is comprised as follows using the raising / lowering frame (lift frame) 22 erected.

  As shown in the figure, the apparatus main body 21 is entirely formed of a steel frame frame structure, and the upper surface side thereof is a flexible container bag loading station 20 on the front end side, a flexible container bag dehydration filtration station 23 on the center side, and a rear end part. The side is zoned to the flexible container bag finishing station 24.

  The elevating frame 22 includes four columns 22a, 22a,..., Which are erected on the left and right upper frames 21a, 21a of the flexible container bag dehydration filtration station 23 portion of the apparatus body frame 21, and the four columns. It comprises a square ceiling frame (ceiling frame) 22b that connects the upper ends of the columns 22a, 22a,... At the center between the ceiling frames 22b. A flexible container bag mounting cylinder 56 is provided which is connected via a motor-operated valve 57 provided with a motor M (not shown in FIG. 1). The lower end side opening portion 58 portion of the flexible container bag attachment tube 56 is a flexible container bag attachment opening portion, and the upper end side opening portion 11 of the flexible container bag 10 is squeezed with respect to the opening portion 58 as shown in the figure. Closely attached. The flexible container bag mounting cylinder 56 is attached to a position above the center portion of the flexible container bag dehydration filtration station 23 using, for example, a bridge frame (not shown) separately installed between the front and rear frame portions of the ceiling frame 22b. Yes.

  Reference numeral 59 denotes a fixing ring for securely fastening and fixing the opening 11 of the flexible container bag 10 to the lower end opening 58 of the flexible container attaching cylinder 56. For example, the fitting elastic strength is high. Two sets of C-rings are adopted.

  The flexible container bag 10 is a sludge recovery device 1 according to this embodiment, which collects the sludge S, performs primary filtration of the contaminated cleaning water W, and ensures dewatering of the recovered sludge S. It functions as a filtration, dehydration, and collection container that reliably discharges washing water while preventing the passage of dust components that form sludge S (for example, those having a particle size of about 0.1 mm). It has. In addition, in this embodiment, in order to ensure filtration and dewatering of the washing water, the used washing water W and sludge S are introduced into the flexible container bag 10 as they are, and then used by a predetermined compression means. Since compression is performed a plurality of times, it is preferable to have toughness that can withstand it. If possible, it is preferable to have a draining portion made of a mesh fabric separately from the normal fabric portion of the upper cylindrical portion and to have a high draining efficiency.

  The flexible container bag 10 configured as described above is placed on a lifting table 41 of a flexible container bag lifting device via a pallet 30 for transportation as shown in the figure. The pallet 30 has a flat box shape in which a predetermined gap in the vertical direction is formed by sandwiching intermediate goods between a plurality of upper and lower plate members provided with a water passage between them. A conveyance structure that can lift a fork part of a forklift inserted into a gap in the direction is adopted.

<Configuration of flexible container bag lifting device: FIGS. 3 to 7>
The flexible container bag lifting / lowering device constitutes the above-described flexible container bag compression means (flexible bag dehydrating means), and includes a lifting cylinder 33 as a driving source, and a power transmission mechanism 34 that transmits the driving force to the lifting platform 41. Lifting platform 41 is lifted via sprockets (turning means) 37a-37d having engagement teeth corresponding to chain-type chains 39a-39d and chain-type chains 39a-39d. It is designed to move up and down. Then, the flexible container bag 10 placed on the lifting platform 41 via the pallet 30 is lifted upward, and a ring-shaped flexible container bag receiving member (this is a top plate) provided on the ceiling frame 22b side. The entire flexible container bag 10 should be evenly compressed with the lower surface 15), and the washing water W in the sludge S stored in the flexible container bag 10 should be discharged to the outside as much as possible and recovered. The sludge S is dewatered as much as possible.

  The elevating cylinder 33 is composed of, for example, an electric power cylinder, and as is apparent from FIGS. 3 to 5, the cylinder body 33 a is integrally installed on the front side of the frame body of the apparatus body 21, and its operating rod 33b extends to the ceiling frame 22b portion of the elevating frame 22, and connects the base ends of the chain-type chains 39a and 39b.

  The power transmission mechanism 34 is located on the left and right of the top surface of the ceiling frame 22b of the elevating frame 22, and is provided in a state parallel to the front and rear, the first rotation support shaft 35 and the second rotation support shaft 36, and the first rotation support shaft 36. The four sets of sprockets 37a, 37b, 37c, and 37d that are rotatably attached to both front and rear ends of the rotation support shaft 35, and the two sets of sprockets 38a and 38b that are attached to the front and rear ends of the second rotation support shaft 36. The chain-type chains 39a, 39b, 39c, 39d wound around the sprockets 37a, 37b, 37c, 37d, 38a, 38b are combined so that they can rotate together.

  The distal ends of the chain chains 39a, 39b, 39c, 39d are connected to the front and rear end portions of the left and right side plates 42, 42 of the lifting platform 41, respectively. On the other hand, the base ends of the chain-type chains 39a and 39b are both connected to the tip of the operating rod 33b of the elevating cylinder 33 (described above). Further, the base end sides of the chain-type chains 39c and 39d are both connected to the upper end of a counterweight 40 for balancing the weight during the lifting operation (see the configurations of FIGS. 3 and 6).

  In the state where the operating rod 33a of the elevating cylinder 33 is most extended (see the state in FIGS. 3 and 5), the power transmission mechanism 34 (each chain 39a, 39b, 39c, 39d and each sprocket 37a, 37b) is configured. 37c, 37d, 38a, 38b), when the lifting platform 41 is maintained in the lowest movement state, while the operating rod 33b of the lifting cylinder 33 is in the most contracted state (see the state of FIG. 6). The lifting platform 41 is maintained in the most moved state via the power transmission mechanism 34.

  In this case, the pallet 30 is loaded onto the lifting platform 41 of the dehydration filtration station 23 in the lifting frame 22 via the flexible container bag loading station 20, and the flexible container bag 10 is placed on the pallet 30. Is placed. 3 and FIG. 5, the opening part 11 of the flexible container bag 10 is attached to the flexible container bag attachment opening 58, the motorized valve 57 is opened, and the washing water W and the flexible container bag 10 are opened. When the sludge S is introduced and the introduction amount becomes a constant amount, the washing water supply pump 63 is stopped and the motor-operated valve 57 is closed, and the lift cylinder 33 is driven. 5 is lifted from the state of FIG. 5 to the state of FIG. 6, and the entire flexible container bag 10 is effectively compressed between the flexible container bag receiving member 15 provided on the ceiling frame 22 b side and the pallet 30. The washing water W in the sludge S stored in the flexible container bag 10 is discharged to the outside as much as possible to allow the sludge S to be recovered. It is possible to dehydration (see the state of FIG. 6).

  Further, at this time, the washing water W discharged to the outside is clarified and filtered to a certain extent when the sludge component S having a predetermined particle size or more determined by the mesh value (for example, draining portion) at that time is recovered in the flexible container bag 10. It becomes the washed water. This compressed state is maintained for a predetermined time required for dehydration.

  When the predetermined time elapses, the state is returned to the lowest state shown in FIGS. 3 and 5 again, the motor-operated valve 57 is opened, and the washing water supply pump 63 is driven. When W and sludge S are introduced and the introduction amount reaches a certain amount, the washing water supply pump 63 is stopped again and the motor-operated valve 57 is closed to drive the elevating cylinder 33 so that the flexible container bag 10 is It is suspended in the state of, and dehydration and filtration of washing water are performed.

  This operation is repeated a predetermined number of times, and when the amount of sludge S that has been dewatered and turned into a cake reaches a predetermined packing / unloading amount (substantially full), the driving of the cleaning water supply pump 63 (supply of cleaning water) is stopped. In the state where the motor-operated valve 57 is kept closed, the opening 11 of the flexible container bag 10 is removed from the flexible container bag attaching port 58 and closed, and the sludge collecting device 1 is left mounted on the pallet 30. The product is transferred from the dewatering filtration station 23 to the finishing dewatering station 24 on the rear end side of the apparatus main body 21, and is left for a predetermined time to perform the final dewatering by spontaneous release (see the state of FIG. 7). In the meantime, a new pallet 30 and a flexible container bag 10 are loaded from the flexible container bag loading station 20 side, and the next new flexible container bag 10 is mounted on the flexible container bag mounting cylinder 58.

  As described above, the lifting platform 41 has a plurality of vertical plates 44 arranged in the left-right crossing direction between the two left and right side plates 42, 43 having a slightly wider interval than the interval in the left-right direction of the pallet 30. It is configured. As will be described later, the elevator base 41 pushes up the pallet 30 by the vertical plates 44, 44,... When it is raised (for example, the state shown in FIG. 6). ), The vertical plates 44, 44... Are positioned between the rollers of the first transport roller 25 installed corresponding to the lower part of the dehydration filtration station 23 above the apparatus main body frame 21. The vertical plates 44, 44... Are configured so as to sink into a position below the upper end surface of each roller by a predetermined dimension while entering the gap (see FIG. 3).

  Accordingly, when the sludge S is collected by the one flexible container bag 10 and the lifting platform 41 is lowered to the lowest position as described above, the lower surface of the pallet 30 on which the flexible container bag 10 is placed Transfer from the upper surface of the vertical plates 44, 44... To the upper surface side of each roller of the first conveying roller 25. Accordingly, when the flexible container bag 10 is pushed rearward in this state, the flexible container bag 10 is provided in the same manner as the pallet 30 in correspondence with the finishing dewatering station 24 zone on the rear end side of the apparatus main body 21. It is transferred onto the roller of the conveying roller 26 and finish dewatering is performed within a predetermined time at the finish dewatering station 24 portion. As a result, the washing water dripping from the flexible container bag 10 within a predetermined time is further recovered. When the predetermined amount of time passes and the dripping of washing water from the flexible container bag 10 ceases, the forklift is made to correspond to the finishing station 24 portion, the fork is inserted into the fork insertion space of the pallet 30 and lowered. Transport to location.

<Structure of wash water storage tank (wash water storage means): FIGS. 1, 3 to 5, FIG. 7>
By the way, as described above, a washing water storage tank (having a water receiving opening surface corresponding to the lower surfaces of the dewatering / filtration station 23 and the finishing dewatering station 24 on the sludge collecting device 1 side is provided inside the apparatus main body frame 21. Washing water storage means) 60 is provided.

  As shown in the figure, the washing water storage tank 60 is deep on the dehydration filtration station 23 side, shallow on the finish dehydration station 24 side, and has a cross-sectional shape corresponding to the amount of dehydration generated on the upper side. A washing water filtering means 62 is provided at a predetermined depth on the filtration station 23 side, and a water level detection device 61 is provided at a predetermined depth on the finishing dewatering station 24 side. The washing water filtering means 62 is constituted by, for example, a water strainer provided with a wedge wire, filtered using the flexible container bag 10 having the predetermined mesh value as a primary filtering means, and in the washing water storage tank 60. The washing water after washing the conveyor belt from which the remaining sludge component is precipitated and separated is filtered more reliably and with high accuracy, and regenerated into washing water with higher clarity. The water level detection device 61 has, for example, three water level detection electrodes with different detection water levels, and when detecting that the stored water level has dropped below a predetermined set level, the supply water pipe connected to the water supply tank 89 69, the electromagnetic on-off valve 70 is opened, and a necessary amount of water is supplied through the washing water filtering means 62. This water supply control is also used for backwashing to eliminate clogging of the washing water filtering means 62 as necessary.

  The washing water storage tank 60 also has a function as a sedimentation basin as described above. For this reason, the flexible container has a particle size smaller than the mesh value of the flexible container bag 10 as the primary filtering means. It is shaped like a mortar that can pass through the bag 10 and collect the finely pulverized components filtered by the washing water filtering means 62 at one location of the bottom 60a. And the end of the piping 71 for sludge component extraction is inserted corresponding to the deepest part of the bottom part 60a in which the same fine powder component precipitates in sludge. The sludge extraction pipe 71 is connected to the washing water supply pump 63 via an electromagnetic opening / closing valve 72, and the washing water supply pump 63 is connected to a drain pipe 85 via a manual opening / closing valve 86. Accordingly, when the electromagnetic opening / closing valve 66 upstream of the washing water supply pump 63 in the washing water supply pipe 67 is closed, the manual opening / closing valve 86 in the drain pipe 85 is opened, and the washing water supply pump 63 is driven, the washing water storage is performed. The sludge component accumulated in the deepest part of the bottom 60a of the tank 60 can be drawn out and discharged to the outside.

  In accordance with this, manual opening / closing valves 83 and 84 for adjusting the return amount of the washing water after the sludge components are drawn off are provided at the bottom of the washing water storage tank 60 on the side of the finishing dewatering station 24 where the sludge is difficult to collect. Ends of first and second water return pipes 81 and 82 for returning a part of the supplied wash water to the water injection nozzles 54a and 54b are inserted. And the sludge component adhering to the shallow inclined surface part of the bottom of the said washing water storage tank 60 after the sludge component drawing-out by it can be washed away. Further, a transparent see-through tube 90 is provided in the middle of the first water return pipe 81 among them to see the clarity of the returned wash water.

<Circulating washing water circulation supply system to washing water injection nozzle: FIGS. 1 and 8>
FIG. 1 shows the basic configuration of the circulating supply system of the filtered cleaning water W to the cleaning water jet nozzles 54a (for belt cleaning) and 54b (for cleaning in the cleaning chamber), and FIG. 8 shows the microcomputer control function. The basic connection structure of the control system centering on the provided control panel 90 is shown. The control panel 90 controls the raising / lowering drive of the raising / lowering cylinder 33, the opening / closing control of the electromagnetic on-off valve 57 that controls the state of sludge introduction into the flexible container bag 10, the washing water supply nozzles 54a (for belt washing), 54b ( The electromagnetic on-off valve 66 that controls the supply state of the cleaning water to the cleaning chamber cleaning) and the cleaning water supply nozzle 54a (for belt cleaning) and 54b (for cleaning in the cleaning chamber) are switched to one side to supply the cleaning water. Electric three-way ball valve (three-way switching valve) 68a to be supplied, driving state control of the washing water supply pump 63 (its driving motor 64), and at the time of pulling out the sediment sludge component in the washing water storage tank 60 to the drain side Drive control of the electromagnetic on-off valve 72 and the cleaning water supply pump 63 (its drive motor 64), and the water level level in which the water level detection device 61 is stored in the cleaning water storage tank 60. Water supply control that opens the electromagnetic on-off valve 70 in the middle of the makeup water pipe 69 connected to the water replenishment tank 89 and supplies the required amount of water through the washing water filtering means 62 when it is detected that the water level has fallen below a predetermined set level. Water replenishment control), the water injection state by the water injection nozzle 54b for cleaning the cleaning chamber from the water injection state by the water injection nozzle 54a for cleaning the conveyor belt by the electric three-way ball valve (three-way switching valve) 68a. Timer control (for example, about once per hour) is performed.

  Reference numeral 67 in FIG. 1 designates the above-described conveyor belt cleaning device 5 from the cleaning water filtering means 62 in the cleaning water storage tank 60 through the electromagnetic on-off valve 66, the cleaning water supply pump 63, and the electric three-way ball valve 68. This is the main cleaning water supply pipe for supplying filtered cleaning water to the first and second cleaning water injection nozzles 54a (for belt cleaning) and 54b (for cleaning in the cleaning chamber). This washing water supply pipe 67 is selectively branched into the first and second nozzle pipes 67a (for belt washing) and 67b (for washing in the washing chamber) at the electric three-way ball valve 68 portion. The nozzle pipe 67a is normally supplied, and the nozzle pipe 67b is used when cleaning the cleaning chamber. The electric three-way ball valve 68 is provided with a manual bypass opening / closing valve 68a. Reference numeral 64 is a motor for driving the cleaning water supply pump 63, and reference numeral PL is a water pressure indicator indicating the water pressure of the supply water.

<Advantages of the circulating supply system of filtered cleaning water to the cleaning water jet nozzle of this embodiment>
Therefore, in the case of the configuration as described above, as described above, the used cleaning water W from which the sludge component S has been removed by being primarily filtered in the flexible container bag 10 portion is once the cleaning water. It is stored in the storage tank 60. And by being stored in this washing water storage tank 60 for a predetermined period of time, a sedimentation action occurs, and the dust component having a particle size smaller than the flexible container bag mesh value in the used washing water W is on the bottom 60a side. The precipitate is secondarily precipitated and separated into a wash water with higher clarity.

  Next, the used cleaning water in the middle to upper layer in the cleaning water storage tank 60 clarified in this way is further filtered through the wedge wire type high performance cleaning water filtering means 62, and is tertiary filtered. Further, the cleaning water becomes highly clear, and the first and second cleaning water jets of the conveyor belt cleaning device 5 described above are passed through the electromagnetic switching valve 66, the cleaning water supply pump 63, and the electromagnetic three-way ball valve 68. The nozzles 54a and 54b are supplied. Then, the above action is repeatedly circulated.

  Therefore, in the case of the same configuration, the clarification degree of the cleaning water supplied to the first and second cleaning water jet nozzles 54a and 54b of the conveyor belt cleaning device 5 becomes very high, and it can be said that it is a new cleaning water. It will be of a good level. For this reason, troubles such as clogging at the electromagnetic on-off valve 66, the washing water supply pump 63, and the electric three-way ball valve 68 do not occur, and their durability (life) is greatly improved. In addition, the supply of cleaning water is smooth and the cleaning effect in the cleaning section is enhanced.

  And since the above operation continues in a closed circuit and is repeatedly circulated, if there is a certain amount of washing water that can be stored in the washing water storage tank 60, the minimum amount of water remaining on the sludge side is sufficient. All you need to do is supply water that corresponds to the decline. In addition, since there is no need to discharge the contaminated water after washing to the outside, waste water as in the conventional case does not occur, and washing with no waste water becomes possible. Therefore, a conventional large-scale wastewater treatment facility is not required.

  However, since the washing water storage tank 60 functions as a sedimentation basin, only the finely-flocculated sludge components after the primary filtration accumulated in the tank bottom 60a after a considerable period of time can be used as necessary. The drain opening / closing valve 86 is opened, the washing water supply pump 63 is driven, and the drain pipe 71 to the return pipe 73 to the drain pipe 85 are discharged.

  In the above case, the cleaning water supply control by the electric pump 64 serving as the cleaning water supply means is intermittently controlled by the control panel 90 at a predetermined cycle, for example.

  According to such a configuration, it is possible to prevent clogging at the sludge discharge port 53c portion of the conveyor belt cleaning device 5, and the amount of used cleaning water flowing into the flexible container bag 10 having a cleaning water filtering function. Can be appropriately reduced, so that the filtration load in the same portion can be reduced. As a result, the operation efficiency of the cleaning processing system is improved.

  As described above, according to the conveyor belt cleaning processing system of the present embodiment, once used cleaning water can be repeatedly used as new cleaning water. A waste water type cleaning treatment system can be realized.

  As a result, a large wastewater treatment facility like the conventional cleaning treatment system becomes unnecessary, and the cost can be greatly reduced. Also, there are no restrictions on the installation location.

  Further, as described above, in the same configuration, all necessary components can be integrated into the device main body 21 and formed into a unit structure that can be moved by a vehicle or the like. It is not limited to fixed locations such as steelworks, but can be moved to where it is needed by vehicles, etc., and can be arbitrarily installed and used in places where cleaning is required, such as construction sites it can.

  As a result, applications that can be handled, such as sludge and other falling powder, are expanded, and the spread of the apparatus is promoted.

<Other embodiments>
In the above embodiment, as the compression means of the flexible container bag 10, a lifting / lowering (lift type) configuration is adopted. However, for example, this may be configured by adopting a compression method in the front-rear direction or the left-right direction. It is also possible to provide a compression means for compressing from the side to the lower side.

  Further, it is possible to adopt a system in which the flexible container bag attaching port portion 58 and the pallet mounting table portion are configured to be rotatable in the direction around the axis and then centrifuged. In such a configuration, it is necessary to provide a waterproof door around the shutter door structure that can be opened and closed, but the cleaning is stopped until the dewatered sludge S is filled in the flexible container bag 10. This eliminates the need for cleaning efficiency and sludge recovery efficiency. Therefore, the conveyor belts 51 and 52 of the belt conveyor 50 that is continuing to be conveyed can be continuously washed.

  In the above embodiment, the flexible container bag 10 is adopted as an example of the sludge collecting means. However, the flexible container bag 10 is not limited to the flexible container bag, and it is possible to adopt one having various equivalent functions and configurations.

  1 is a sludge collecting device, 5 is a conveyor belt washing device, 10 is a flexible container bag, 11 is a flexible container bag opening, 20 is a flexible container bag loading station, 21 is a main body of the device, 22 is a lifting frame, 23 is a dehydration filtration station, and 24 is Finishing dewatering station, 25 is a first transport roller, 26 is a second transport roller, 30 is a pallet, 41 is a lifting platform, 50 is a belt conveyor, 52 is a return belt, 53 is a cleaning chamber, 53a is a cleaning chamber, 54a , 54b is a washing water injection nozzle, 55 is a duct hose, 57 is an electric valve for introducing sludge, 60 is a washing water storage tank, 62 is a washing water filtering means, 63 is a washing water supply pump, 66 is an electromagnetic on-off valve, 67 Is a cleaning water supply pipe, 68 is an electric three-way ball valve, 70 and 72 are electromagnetic on-off valves, 90 is a control panel, S is sludge, and W is cleaning water. .

Claims (3)

Conveyor belt cleaning means for cleaning conveyor belts that have fallen powder with water, and used for cleaning by the conveyor belt cleaning means, and by introducing dewatered washing water sludge containing the above-mentioned powder, The powder collecting means for collecting the washing water, the washing water storing means for collecting and storing the washing water from which the powder falling component is collected through the powder collecting means, and the washing water stored in the washing water storing means after filtration through a wash water filtration unit consists of a cleaning water supply means for supplying a washing water to the conveyor belt cleaning means, with their respective means constituting so that the washing water is circulated sequentially closed circuit manner, Non-waste water which comprises the said wash water storage means in the wash water storage tank which has a sedimentation basin isolation | separation function, and isolate | separates it by precipitating the dust component in the wash water supplied via the said powder fall collection | recovery means A conveyor belt cleaning processing system, wherein the dust collection means comprises a flexible container bag having a water permeability and filtration function, and is pressurized and dehydrated at a dehydration filtration station equipped with a compression means. After the dehydration, the water is naturally dehydrated at the finishing dewatering station, and the washing water storage tank is located at the lower part of the dewatering filtration station and the finishing dewatering station and deep on the dewatering filtration station side, and the finishing dewatering station. The washing water filtering means is provided at a predetermined depth portion on the dehydration filtration station side, and a water level detection device is provided at a predetermined depth portion on the finishing dehydration station side. In addition, piping for extracting sludge components at the deepest part on the dehydration filtration station side, Serial finishing dehydration station side bottom cleaning system free wastewater type conveyor belt water return pipe returning a part of the wash water is equal to or disposed on the inclined surface.   2. The cleaning system for a waste water type conveyor belt according to claim 1, wherein the cleaning water supply means is constituted by an electric pump and is intermittently driven by the control means. Conveyor belt cleaning means, falling powder recovery means, cleaning water storage means, cleaning water filtration means, cleaning water supply means, pressurization means, dehydration filtration station, finishing dehydration station are integrated into the main part of the device as a single device The cleaning system for a non-waste water type conveyor belt according to claim 1 or 2, wherein the system can be moved .

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