JP3974793B2 - Sludge solidification treatment equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sludge solidification treatment apparatus capable of solidifying sludge widely using a lime-based solidifying agent as a main solidifying agent from organic sludge such as sludge discharged by a shield construction method or the like at a building site to inorganic sludge. .
[0002]
[Prior art]
2. Description of the Related Art Conventionally, an apparatus for solidifying sludge by introducing sludge and a lime-based solidifying agent into a rotary drum and stirring and reacting the sludge and the solidifying agent with stirring blades in the rotary drum is known.
[0003]
[Problems to be solved by the invention]
By the way, in operation, the temperature in the rotary drum is a condition that is suitable for the hydration reaction of sludge and the solidifying agent and is sufficient to promote the hydration reaction. In this case, there is no means for heating the inside of the rotary drum, and it is necessary to wait for 30 to 40 minutes until it naturally warms due to the heat generated by the lime-based solidifying agent. During that time, the solidifying agent is wasted and it is uneconomical. In addition, there is a problem that it is difficult to control this because the reaction changes rapidly thereafter.
[0004]
Further, in the conventional apparatus, all the stirring blades arranged in the rotary drum are rectangular plates of the same size and are attached at the same angle, so that the sludge is soft on the charging side, so that it falls naturally. In the middle stage where there is a lot of scraping and the reaction is good, the sludge becomes hard and the transport amount increases, the amount of stagnation on the stirring blade increases, the solidified sludge tends to accumulate at the root of the stirring blade, and the inside of the device There was a problem that there was a risk of clogging with solidified sludge.
[0005]
Further, in the conventional apparatus, the discharge screw for discharging the solidified sludge that has been processed from the inside of the rotary drum to the outside is provided at a slightly lower position in the center of the rotary drum. There was a problem that the falling distance of the solidified sludge was long and it was difficult to discharge the solidified sludge.
[0006]
In addition, since the slide gate in the conventional external sludge charging / conveying device has a simple rectangular shape, the flow rate of the external sludge increases each time the slide gate is opened, and the sludge containing gravel etc. enters the gate opening. There is a problem that it becomes impossible to adjust the flow rate.
[0007]
In addition, the lower structure of the popper screw in the conventional external sludge charging / conveying device uses a gland packing for the seal. However, this gland packing is very vulnerable to wear and elliptical motion, and the seal itself is taken in one to two months. Will disappear and sludge will leak out. In addition, since the seal case is made of steel, the screw shaft is worn and deformed, and further, a material containing cement cannot be used because the bearing below the seal is solidified.
[0008]
Further, the control panel operation in the conventional solidification processing apparatus is mostly manual operation, and relies on the intuition of the operating person. For this reason, there are problems such as wasteful use of the solidifying agent to form powder, and conversely sludge cannot be solidified by adding a solidifying agent that is too small to solidify.
[0009]
The present invention has been made in view of such conventional problems. The object of the present invention is to heat sludge with a rubber heater and send warm air into a rotary drum with a hot air machine. Sludge and lime-based solidifying agent in an optimal reaction state at an early stage, reducing wasteful consumption of the solidifying agent and reducing the addition of solidifying agent compared to conventional sludge solidification treatment equipment Is to provide.
[0010]
Another object of the present invention is to improve the stirring blades arranged in the rotary drum so that a large amount of sludge can be treated with a rotary drum smaller than the conventional rotary drum, and the apparatus can be downsized. It is in providing the solidification processing apparatus. In addition, the sludge solidification treatment device that can efficiently discharge solidified sludge can be efficiently discharged without shortening the sludge residence time on the stirring blade, causing little contact with the root of the stirring blade, and preventing clogging in the rotary drum. It is to provide.
[0011]
Another object of the present invention is to provide a sludge solidification treatment apparatus that can efficiently discharge sludge by suppressing sludge returning to the rotary drum by changing the position of the discharge screw.
[0012]
Further, another object of the present invention is to allow the installation of the carry-out belt conveyor in the front, left and right directions, so that a free layout is possible, it can be installed in a narrow place, and by improving the chimney, An object of the present invention is to provide a sludge solidification treatment apparatus that eliminates the scattering of dust to the outside.
[0013]
Another object of the present invention is to allow fine adjustment of the amount of external sludge input to the sludge popper by improving the lower structure of the slide gate and popper screw in the external sludge input / conveyor. An object of the present invention is to provide a sludge solidification treatment apparatus having a wearable popper screw substructure and having excellent durability.
[0014]
[Means for Solving the Problems]
In order to achieve these objects, the invention according to claim 1 is an apparatus in which sludge is solidified by using a lime-based solidifying agent as a main solidifying agent, and the sludge and the solidifying agent are respectively charged separately. A charging unit, a stirring unit for stirring the charged sludge and the solidifying agent, and a discharging unit for discharging the sludge solidified in the stirring unit, the charging unit including the sludge and the solidifying agent hopper; The screws that carry the sludge and the solidifying agent introduced from the respective hoppers to the stirring unit, and the temperature in the stirring unit are suitable for the hydration reaction of the sludge and the solidifying agent and promote the hydration reaction. In order to do so, it includes a warm air machine that sends warm air into the stirring unit and a rubber heater that heats the sludge wound around the outer periphery of the casing of the sludge screw, and the stirring unit was carried from the charging unit Sludge and solidifying agent In order to stir, it includes a rotary drum that rotates by receiving the rotational force of the drive source, and the rotary drum has three on the inner periphery, and the first stirrer sequentially from the input side toward the discharge side A blade, and a second stirring blade and a discharge blade having an area approximately 1.5 times that of the first stirring blade, the first stirring blade is at an angle of approximately 15 degrees with respect to the axis, and the second stirring blade is approximately The discharge blades are arranged at an angle of 25 degrees and an angle of approximately 90 degrees, respectively, and the discharge section is located on the discharge section mount and the discharge section mount and viewed from the inside of the rotary drum in the stirring section. A solidified sludge discharge screw that rotates in the same direction as the rotary drum disposed on the upper right side, and a temperature sensor that is erected on the discharge unit pedestal and that controls the temperature of the hot air blower in the input unit Smoke provided It is characterized in configuration including and.
[0015]
The invention according to claim 2 is characterized in that the first and second stirring blades arranged in the rotary drum are each formed with an oblique cutout portion along the discharge portion side. .
[0016]
The invention according to claim 3 is characterized in that the chimney in the discharge part is formed by integrating a chimney part and a head portion.
[0017]
The invention according to claim 4 is characterized in that the discharge unit mount in the discharge unit has a structure in which a carry-out belt conveyor can be installed in three directions, right and left and front.
[0018]
The invention according to claim 5 is an apparatus in which sludge is solidified using a lime-based solidifying agent as a main solidifying agent, and an external sludge charging / conveying apparatus in which external sludge from a raw material popper is charged / conveyed, and , An input part into which the sludge and the solidifying agent from the external sludge input / conveyor are supplied separately, an agitation part in which the introduced sludge and the solidifying agent are agitated, and sludge solidified in the agitation part The external sludge charging / conveying device includes an external sludge hopper, a hopper screw that transports the sludge charged into the external sludge hopper, and the screw chute that is carried by the hopper screw. Sludge input amount adjusting means for adjusting the amount of sludge input to the input unit via the sludge, the input unit is input from the sludge and the solidifying agent hopper, and each of these hoppers In order to ensure that each screw carrying the sludge and solidifying agent to the stirring unit and the temperature in the stirring unit are suitable for the hydration reaction of the sludge and solidifying agent and promote the hydration reaction, And a rubber heater for heating the sludge wound around the outer periphery of the sludge screw casing, and the agitating unit agitates the sludge and solidifying agent carried from the charging unit. Therefore, the rotary drum includes a rotary drum that rotates in response to the rotational force of the drive source, and the rotary drum has three inner drums and the first stirring blades sequentially from the input unit side to the discharge unit side. The second stirring blade and the discharge blade having an area approximately 1.5 times that of the first stirring blade, the first stirring blade is at an angle of approximately 15 degrees with respect to the axis, and the second stirring blade is approximately 25 degrees. At an angle of approximately 90 degrees. Each of the discharge units is arranged, and the discharge unit includes a discharge unit base having a structure in which a carry-out belt conveyor can be installed in three directions, left and right, and a rotary drum on the discharge unit base and in the stirring unit A solidified sludge discharge screw that rotates in the same direction as the rotary drum arranged on the upper right side when viewed from the inside, and a chimney portion and a Jinkasa stand integrally on the discharge unit stand, and the input And a chimney provided with a temperature sensor for controlling the temperature of the warm air machine in the section.
[0019]
According to a sixth aspect of the present invention, the sludge input amount adjusting means in the external sludge input / conveyor device includes a slide gate that opens and closes an opening portion of the screw chute via a reciprocating motion of a drive source. Has a V-shaped notch with an arcuate bottom at the front, and two types of rubber with different hardness are stretched on the gate substrate to enhance the sealing effect. It is characterized by.
[0020]
The invention according to claim 7 is characterized in that in the screw chute, when the sludge is made of rubber and has approximately half the length of the screw chute opening to prevent scattering, the soft gate is treated with the slide gate. When the amount of opening is small, scattering of sludge to the left and right and rear is prevented.When processing hard sludge such as dewatered cake, when the slide gate is fully open, the scattering prevention warmth is the original. It is characterized by hanging in a substantially vertical state so as not to hinder the discharge of sludge.
[0021]
The invention according to claim 8 is that the lower structure of the hopper screw in the external sludge charging / conveying device is fitted with a T-shaped cylindrical rubber seal with a non-emulsifying grease on the outer periphery of the screw shaft, An O-type rubber seal that rotates integrally with the screw shaft is fitted to the rear part of the T-shaped cylindrical rubber seal, and an automatic alignment for correcting the elliptical rotation of the screw shaft is provided behind the O-type rubber seal. A bearing is provided, and a cover having a grease filler opening for sealing the O-type rubber seal and the self-aligning bearing and injecting non-emulsifying grease is provided at a rear end portion of the screw shaft. It is characterized by being.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described.
The sludge solidification treatment apparatus according to the present invention is a sludge from organic sludge to inorganic sludge such as sludge discharged by a shield construction method at a building site, and a solidifying agent mainly composed of a lime-based solidifying agent via an input part. Each was introduced and conveyed, and then introduced into a heated rotary drum that was a stirring unit, in which the sludge and the solidifying agent were stirred and solidified by a stirring blade, and then solidified. Sludge is discharged from the discharge section to the outside.
[0023]
【Example】
Hereinafter, specific examples will be described together with the operation thereof with reference to the drawings.
1 is a partially cutaway front view of an example of a sludge solidification apparatus according to the present invention, FIG. 2 is a left side view of FIG. 1, and FIG. 3 is a right side view of FIG. The solidification processing apparatus in which sludge is solidified by using a solidifying agent mainly composed of a lime-based solidifying agent includes an input unit into which the sludge and the solidifying agent are separately input, and the sludge and the solidifying agent that have been input. Is provided with an agitation part in which the sludge is agitated and a discharge part from which sludge solidified in the agitation part is discharged.
[0024]
In FIG. 1, the charging unit 1 has a sludge popper 2 into which sludge is charged and a solidifying agent popper 3 into which a solidifying agent mainly composed of a lime-based solidifying agent is charged. The sludge popper 2 is provided in communication with the sludge screw 5 via the flange 4, and the solidifying agent popper 3 is provided in communication with the solidifying agent screw 7 via the flange 6. 7 are conveyed independently.
[0025]
The sludge screw 5 and the solidifying agent screw 7 are arranged in parallel on the screw base 9 fixed to the base 8 via ribs. As shown in FIG. 6, the sludge screw 5 includes a casing 10 and a screw 11 that rotates in the casing 10, and the sludge that is put into the casing 10 is heated on the outer periphery of the casing 10. A rubber heater 12 is bonded with a double-sided adhesive tape.
[0026]
A common flange 14 is attached to the end of the sludge screw 5 and the solidifying agent screw 7 on the input side 1 of the casings 10 and 13, and the screws 11 and 17 are respectively connected to the common flange 14 via bearing bearings 15 and 16. And sprockets 18 and 19 are attached to one end portions of the shafts of the screws 11 and 17, respectively.
[0027]
The sprockets 18 and 19 are connected to the screw mount 9 via ribs 20 and 21 via chains 28 and 29 protected by drive motors 24 and 25 on the motor mounting plates 22 and 23 and chain covers 26 and 27, respectively. The screws 11 and 17 are connected to each other and receive the rotational force of the drive motors 24 and 25 to rotate.
[0028]
The stirring part side of the sludge screw 5 and the solidifying agent screw 7 is pivotally supported by a cylindrical screw seat 31 attached to the screw mount 9 via a rib 30. More specifically, the sludge screw casing 10 and the solidifying agent screw casing 13 are welded to the openings of the stirrer side end face 32 of the cylindrical screw receiving seat 31 with the tongues 33 and 34 facing obliquely lower outside, The other end portions of the screws 11, 17 are rotatably supported by bearings 38, 39 attached to the screw seat end face 32 via attachment plates 35, 36, 37.
[0029]
Moreover, from the end surface 32 of the cylindrical screw seat 31, the end part 42 of the duct 41 for warm air machines of the warm air machine 40 arrange | positioned on the base 8 protrudes and is welded toward the stirring part side. This hot air machine 40 has a maximum temperature of 200 in the rotary drum so that the temperature in the rotary drum in the stirring unit described later is a temperature suitable for the hydration reaction of sludge and the solidifying agent and promoting the hydration reaction. It is for sending warm air of ℃ continuously.
[0030]
As shown in FIG. 5, a scraper 43 is provided on the end surface 32 of the cylindrical screw seat 31 to scrape the sludge adhering to the inner periphery of the rotary drum in the agitating portion, and the drop space 44. To fall into the rotary drum.
[0031]
The sludge carried by the screw 11 while being heated by the rubber heater 12 and the solidifying agent carried by the screw 17 are shown in FIG. 1 and FIG. It is introduced into the rotary drum 46 that is heated by the warm air blown out from the duct end portion 42 during rotation in the stirring portion 45.
[0032]
The rotary drum 46 is disposed on the front and back on the base 8. More specifically, four receiving rollers 48 are rotatably supported by a pair of bearings 47 at four positions on the left and right sides of the base 8, and welded to the receiving rollers 48 before and after the outer periphery of the rotary drum 46. The ring roller 49 is mounted, and a driving galling 50 is welded to the outer peripheral discharge portion side of the rotary drum 46, and the driving galling 50 is used for driving a motor 52 provided on a frame 51 on the base 8. The gear 53 engages with the gear 53 and rotates while being supported by the four receiving rollers 48 by driving the motor 52.
[0033]
The rotary drum 46 has circular openings 56 and 57 concentric with the drum shaft on the front side plate 54 and the rear side plate 55, and the cylindrical screw seat 31 is sealed through the seal member 58 in the opening 56. is there. The rotary drum 46 is provided with two inspection ports 60 having opening / closing lids 59.
[0034]
Three stirring blades are spirally arranged on the inner periphery of the rotary drum 46 in order to efficiently scrape the sludge in the drum. 1 and 7 to FIG. 10, FIG. 7 is a developed inner surface view of the rotary drum 46 provided with stirring blades and the like, and shows a scraper portion 61 from the input portion side toward the discharge portion side. It is divided into a 15-degree stirring blade portion 62, a 25-degree stirring blade portion 63, and a discharge portion 64.
[0035]
The scraper portion 61 corresponds to the scraper 43 provided on the cylindrical screw seat end face 32, and the sludge adhering to the scraper portion 61 is scraped into the drum by the scraper 43 fixed by the rotation of the rotary drum 46. It is a part to be.
[0036]
In order to efficiently scrape the soft sludge from the front, the first stirring blade 65 is welded to the 15-degree stirring blade portion 62 at an angle of about 15 degrees with respect to the axis a. As shown in FIG. 8, the first stirring blade 65 has a substantially trapezoidal shape in plan view having an inclined side portion 66 in which one corner on the discharge portion side is obliquely cut, and is welded to the rotary drum 46. It is devised so that sludge does not exist at the root of the side 67 so as to increase the falling speed of the sludge.
[0037]
This is because the conventional stirring blade has a square shape in plan view, and it takes time for the blade to fall, which makes it difficult for solidified sludge to come into contact with the drum, blade and root, and the entire drum is clogged with solidified sludge. It is.
[0038]
The second stirring blade 68 is welded to the 25-degree stirring blade portion 63 at an angle of about 25 degrees with respect to the axis a. As shown in FIG. 9, the second stirring blade 68 has a substantially trapezoidal shape in plan view having an inclined side portion 69 in which one corner portion on the discharge portion side is obliquely cut, and is welded to the rotary drum 46. In order to prevent the solidified sludge from reaching the root of the side portion 70 and to efficiently discharge the solidified sludge without clogging in the drum, the area is approximately 1.5 times that of the first stirring blade 65. The size is set.
[0039]
In order to efficiently send the solidified sludge to the discharge screw described later, the discharge blades 71 are welded to the discharge portion 64 at an angle of approximately 90 degrees with respect to the axis a. As shown in FIG. 10, the discharge vane 71 has an irregularly-shaped square shape having an inclined side portion 72.
[0040]
The sludge that has been stirred and solidified in the rotary drum 46 is discharged from the discharge portion 73 to the outside.
[0041]
The discharge part 73 includes a discharge part mount on the base 8, a discharge screw, and a chimney. As shown in FIG. 12, the discharge unit pedestal 74 is configured such that a carry-out belt conveyor (not shown) from which the treated solid sludge discharged from the rotary drum 46 is carried is left and right of solid arrows A, B, and C. And it has the structure which has the space part 75,76,77 so that it can install in three directions ahead.
[0042]
A discharge unit box 78 having an inspection port is connected to the discharge unit mount 74, and a cylindrical screw seat 79 is interposed in the opening on the stirring unit 45 side of the discharge unit box 78 via a rib 80, and The front is attached to the rotary drum 46 through the rear plate opening 57 of the rotary drum 46 and the opening 57 and the outer periphery of the cylindrical screw seat 79 are sealed via a seal member 81.
[0043]
A casing 82 is attached in the cylindrical screw seat 79, and a discharge screw 83 is rotatably provided in the casing 82. The end of the discharge screw 83 on the stirring portion 45 side is pivotally supported by a bearing bearing 84 attached to the cylindrical screw seat 79, and the end of the discharge portion 73 side is attached to the outer surface of the discharge portion box 78. A sprocket 86 attached to the end of the discharge screw and a sprocket 88 of the drive motor 87 provided on the discharge unit mount 74 are connected via a chain 90 protected by a chain cover 89 while being supported by the bearing 85. In response to the rotational force of the drive motor 87, the discharge screw 83 rotates to discharge the treated solidified sludge to the outside from the opening of the discharge unit box 78.
[0044]
Note that the discharge screw 83 has the same rotation as the rotary drum 46 and efficiently transfers the solidified sludge from the discharge blade 71, as shown in FIG. It is arranged in the upper right part that is shifted more.
[0045]
A chimney 92 is erected on the discharge unit box 78 via a flange 91. This chimney 92 discharges hot air and water vapor generated by the reaction between sludge and a solidifying agent in the rotary drum 46. As shown in FIGS. 13 and 14, the chimney 93 and the head The Jinkasa 94 is welded and integrated with each other via a flat bar 95, so that dust such as fine powder of a solidifying agent is not scattered from the Jinkasa to the outside as in the prior art, and the lower carry-out belt through the chimney 93. It falls on a conveyor (not shown).
[0046]
In addition, a temperature sensor 96 is attached to the lower part of the chimney 92 (lower part of the flange 91) in the chimney 92, and the temperature sensor 96 continuously senses the temperature of the water vapor so that the temperature of the hot air blower 40 is controlled and managed at an appropriate temperature. It is supposed to do.
[0047]
Next, the sludge solidification process by the apparatus configured as described above will be described. Sludge (including sludge containing dioxins) is introduced into the sludge popper 2 and continuously introduced from the tongue 33 into the rotary drum 46 by the screw 11 rotated by the drive motor 24 while being heated by the rubber heater 12. On the other hand, the solidifying agent popper 3 is charged with a lime-based solidifying agent (including a mixed solidifying agent of lime-based solidifying agent and fly ash), and continuously from the tongue 34 to the rotary drum 46 by the screw 17 rotated by the drive motor 25. be introduced.
[0048]
The rotary drum 46 is driven by the drive motor 52 for 3 to 5 r. p. In addition, hot air of 200 ° C. is continuously fed into the inside through a duct 41 and a tongue 42 by a hot air blower 40, and the temperature in the rotary drum 46 is the same as that of the hot air blower 40 and the chimney. The sludge and the solidifying agent are managed so as to react most easily by interlocking with a temperature sensor 96 attached to 92.
[0049]
The sludge and the solidifying agent in the rotary drum 46 are efficiently scraped up by the first stirring blade 65 at 15 degrees forward, reacted with the solidifying agent while being transferred, and agglomeration of the generated solid matter of water vapor is repeated. The sludge solidified by the second stirring blade 68 is efficiently stirred and transferred, and the sludge solidified by the rear discharge blade 71 sequentially falls on the casing 82 and is driven by the discharge screw 83 by the rotation of the drive motor 87. The paper is discharged outside from the lower end opening of the discharge portion box 78 via a carry-out belt conveyor (not shown).
[0050]
If a mixed solidifying agent of lime-based solidifying agent and fly ash is used as the solidifying agent, it is possible to detoxify dioxins in sludge containing dioxins.
[0051]
Hot air and water vapor generated by the reaction between the sludge and the solidifying agent in the rotary drum 46 are discharged from the discharge box 78 to the outside through the chimney 92. In this case, the dust containing the fine powder of the solidifying agent falls in the chimney 93 because the chimney 93 and the Jinkasa 94 are integrated, and does not scatter and fall outside.
[0052]
In this way, the sludge is solidified, but in order to make the properties of the treated solidified sludge uniform, continuous processing is performed by automatic operation in which the interlocking operation of each unit from sludge input to discharge is input to the sequence circuit in advance. Is done.
[0053]
That is, take data such as change in addition rate of solidifying agent and elapsed time to maintain an efficient solidified state by actually operating manually, input these data into the sequence circuit, and click the automatic start button. Automatic continuous operation is possible with just one push. If the sludge does not enter, stop adding the solidifying agent, drain the sludge in the rotary drum and then stop it completely. When there is no solidifying agent, the introduction of sludge is stopped, and the sludge in the rotary drum is discharged and then completely stopped.
[0054]
Next, another example of the present invention will be described with reference to FIGS. In this example, the sludge is configured so that the sludge is not directly fed into the sludge popper 2 but the external sludge from the raw material popper (not shown) is indirectly fed into the sludge popper 2 via the external sludge throwing / conveying device. It is a solidification processing apparatus.
[0055]
Therefore, the external sludge charging / conveying device 100 will be described together with its operation. The external sludge charging / conveying device 100 includes an external sludge hopper, a hopper screw that transports the sludge charged into the external sludge hopper, and a sludge that is carried by the hopper screw and charged into the sludge popper 2 via a screw chute. Sludge input amount adjusting means for adjusting the input amount of the sludge.
[0056]
External sludge from a raw material popper (not shown) is input to the external sludge popper 101. Below the external sludge popper 101, a hopper screw 102 is disposed obliquely with the external sludge popper 101 side facing slightly downward.
[0057]
The popper screw 102 includes a casing 103 and a screw 104 that rotates in the casing 103, and a bearing bearing 106 provided on the gantry 105 is attached to a slightly upper end portion of the casing 103. A sprocket 107 is attached to the end of the screw shaft, and the sprocket 107 is connected to the sprocket 109 of the drive motor 108 disposed on the mount 105 via a chain 110.
[0058]
On the other hand, the tail portion of the popper screw 102 has a structure in which foreign matter is not caught, wear is small, and sludge does not leak, so that an end surface of the casing 103 is formed as shown in FIG. A T-shaped cylindrical rubber seal 113 is fitted to the outer periphery of the screw shaft protruding from the opening of the welding flange 111 via non-emulsifying grease 112, and the rubber seal 113 welds a seal retainer 114. The flange 115 is pressed by being fixed to the flange 111 via the gasket 116.
[0059]
An O-type rubber seal 117 that rotates integrally with the screw shaft is fitted to the rear part of the rubber seal 113, and an automatic centering bearing 118 for correcting the elliptical rotation of the screw shaft is provided behind the O-type rubber seal 117. The O-type rubber seal 117 and the self-aligning bearing 118 are sealed with a cover 120 having a grease filling port 121 fixed to the seal retainer 114 via a gasket 119, and the space sealed with 120 by the cover is not emulsified. Grease 122 has been injected.
[0060]
As shown in FIGS. 15 and 17, the sludge input amount adjusting means includes a pair of rails provided parallel to the left and right at the bottom of the popper screw 102, and a pair of roller plates that reciprocate along the pair of rails. A slide gate that opens and closes a chute opening of the casing 103 via a power source, a power cylinder as a drive source of the slide gate, and the like are included.
[0061]
One end of the pair of rails 123 is welded to a support 124 that is welded to the casing 103, and the other end is welded to a chute 125 that is connected to the front lower portion of the casing 103 and provided in parallel on the left and right. Above the pair of rails 123, a pair of guides 126 having one end welded to the support 124 and the other end welded to the chute 125 are provided in parallel in the left-right direction.
[0062]
Between the pair of rails 123 and the pair of guides 126, a plurality of rollers 128 rotatably supported on the upper portions of the pair of roller plates 127 are provided so as to be able to rotate and reciprocate. The lower portions of the pair of roller plates 127 are fixed to mounting plates 130 that are vertically suspended at the left and right ends of the slide gate 129, and are horizontally supported by the left and right roller plates 127 and a plurality of left and right rollers 128, and the slide gate 129 reciprocates. It comes to move.
[0063]
As shown in FIG. 18, the slide gate 129 is a rectangular plate-like body in which a V-shaped cutout portion 132 having an arc-shaped bottom portion 131 is formed at the front center portion, and is on the V-shaped cutout portion 132 side. The front edge of is chamfered. The slide gate 129 has two kinds of rubbers having different hardnesses, preferably a chloroprene rubber 134 bonded to the entire surface of the substrate 133 to enhance a sealing effect on a metal substrate 133 such as stainless steel. A neoprene rubber 135 is adhered on the rubber 134 so as to partially cover the rubber 134 to form a two-layered structure.
[0064]
The slide gate 129 is attached to a connecting metal fitting 136 provided at the center of the lower surface of the slide gate 129 by connecting the cylinder rod 138 of the power cylinder 137 supported and attached to the external sludge popper 101, and is slid by driving the power cylinder 137. The gate 129 slides in the direction of the solid arrow D (forward) shown in FIG. 15 to close the opening of the chute 125, and slides in the direction of the solid arrow E (rearward) to move the chute 125. The opening is opened.
[0065]
The power cylinder 137 is controlled by an inverter circuit so that the opening side in the E direction operates slowly and the closing side in the D direction operates fastest.
[0066]
As shown in FIG. 20, inside the chute 125, a splash 139 made of neoprene rubber is suspended with bolts. The length of the portion outside the scattering preventing warm 139 is set to be approximately half the length of the opening of the chute 125.
[0067]
As shown by an imaginary line in FIG. 20, when the opening of the chute 125 is completely closed by the slide gate 129, the scattering prevention warm 139 is placed on the slide gate 129 at an angle of approximately 90 degrees. In the case where the sludge is located and soft sludge is processed, the sludge is prevented from scattering to the left and right and back when the opening of the slide gate 129 is small. When the hard sludge such as dewatered cake is fully opened, the splash-proof warming 139 hangs down vertically as shown by the solid line, so there is no hindrance to sludge discharge. .
[0068]
The external sludge charging / conveying device 100 configured in this way is not particularly shown, but is attached to the solidification processing device shown in FIG. 1, and external sludge from a raw material popper (not shown) is transferred from the external sludge popper 101 to the popper. It is carried by the screw 102, and its amount is adjusted from the chute 125 through opening and closing by the slide gate 129, and is introduced into the sludge popper 2 and solidified as described above.
[0069]
In the solidification processing apparatus provided with the external sludge charging / conveying device 100, during an emergency stop, the operation of each part such as the charging unit 1 is completely stopped after the slide gate 129 is closed. In addition, since the amount of input from the slide gate 129 slightly changes due to the pressure change due to the amount of sludge in the sludge popper 2, when the flow rate by opening and closing the slide gate 129 is automatically adjusted, the amount of sludge remaining in the sludge popper 2 and the amount of input By taking the data and inputting it to the sequence circuit, it is possible to uniformly introduce sludge by automatic operation.
[0070]
【The invention's effect】
Thus, according to the present invention, the sludge is heated by the rubber heater, the warm air is sent into the rotary drum by the hot air machine, and the temperature is controlled in conjunction with the temperature sensor attached to the chimney, Since the sludge and the solidifying agent are in an optimum reaction state at an early stage, the wasteful consumption of the solidifying agent can be suppressed, and the addition of the solidifying agent can be reduced as compared with the conventional case, which is excellent in economic efficiency.
[0071]
In addition, according to the present invention, since three stirring blades are spirally arranged on the inner periphery of the rotary drum, the amount of sludge being scraped increases and the amount of stirring increases, which is smaller than conventional rotary drums. A large amount of sludge can be treated, and the size of the apparatus can be reduced. Further, since the first and second stirring blades are obliquely cut along the discharge portion side to form a cutout portion, the sludge residence time on the stirring blade is shortened, and the root of the stirring blade is reduced. There is little irritation, no clogging occurs in the rotary drum, and solidified sludge can be discharged efficiently.
[0072]
Further, according to the present invention, the discharge screw is rotated in the same direction as the rotary drum, and is disposed at the upper part from the right when viewed from the inside of the drum, so that the sludge returning into the drum can be efficiently discharged while being discharged. it can.
[0073]
Further, according to the present invention, since the discharge belt conveyor can be installed in the three directions of the left and right and the front, the discharge belt conveyor can be freely laid out and can be installed in a narrow place.
[0074]
Further, according to the present invention, since the chimney in the discharge section is integrated with the chimney section and the Jinkasa, soot does not scatter to the outside, but falls on the carry-out belt conveyor, thereby reducing scattering. .
[0075]
Further, according to the present invention, the slide gate in the external sludge charging / conveying device is formed with a V-shaped notch having an arcuate bottom in front of the slide gate, so that the biting of foreign matter such as gravel is greatly reduced. In addition, the amount of sludge input can be finely adjusted, and a desired amount of sludge can be input.
[0076]
Further, according to the present invention, in the lower structure of the hopper screw in the external sludge charging / conveying device, the rubber screw and the non-emulsifying grease are in contact with the steel screw shaft except for the self-aligning bearing, so that the wear of the screw shaft Does not occur, and the screw shaft rotates between the T-shaped cylindrical rubber seal and the non-emulsifying grease, so that pebbles and sludge do not enter the seal portion, and the rear part of the T-shaped cylindrical rubber seal Since the O-type rubber seal rotates together with the screw shaft, the infiltration of sludge into the bearing is prevented.
[0077]
Further, according to the present invention, if a mixed solidifying agent of lime-based solidifying agent and fly ash is used as the solidifying agent, sludge containing dioxins can be stabilized.
[Brief description of the drawings]
FIG. 1 is a partially cutaway front view of an example of a sludge solidifying apparatus according to the present invention.
FIG. 2 is a left side view of FIG.
FIG. 3 is a right side view of FIG. 1;
4 is a partial perspective view of an input portion in FIG. 1. FIG.
FIG. 5 is a partial perspective view showing the inside of the input section in FIG. 1;
FIG. 6 is a front view showing a part of the charging section in a cross-sectional view and omitted.
FIG. 7 is a developed inner view of the rotary drum.
FIG. 8 is a plan view of a first stirring blade.
FIG. 9 is a plan view of a second stirring blade.
FIG. 10 is a plan view of the discharge blade.
FIG. 11 is a side view from the inside showing an arrangement state of the discharge screw with respect to the rotary drum.
FIG. 12 is a perspective view showing a portion of the discharge unit mount.
FIG. 13 is a partial cross-sectional view showing a chimney portion.
14 is a plan view of FIG. 13;
FIG. 15 is a front view of the sludge solidification processing apparatus according to the present invention, with a part omitted showing the external sludge charging / conveying apparatus, and a cross-sectional view.
16 is a partial enlarged cross-sectional view showing a lower structure of the external sludge charging / conveying device in FIG.
FIG. 17 is a partial front view of the sludge input amount adjusting means in the external sludge input / conveyor.
FIG. 18 is a plan view of a slide gate.
19 is a partially enlarged cross-sectional view of FIG.
FIG. 20 is a partially enlarged cross-sectional view showing a state of attachment of the scattering prevention warmth.
[Explanation of symbols]
1 Input section
2 Sludge popper
3 Solidifying popper
5 Sludge screw
7 Solidifying screw
8 base
9 Screw mount
10, 13 Casing
11, 17 screw
12 Rubber heater
40 Hot air machine
45 Stirrer
46 Rotary drum
47 Bearing
48 rollers
49 Ring Roller
50 Drive gearing
52 motor
65 First stirring blade
66, 69, 72 Inclined side
68 Second stirring blade
71 discharge vanes
73 Discharge section
74 Discharge unit stand
75, 76, 77 Space
78 Discharge box
83 Discharge screw
87 Drive motor
92 Chimney
93 Chimney
94 Jinkasa
96 Temperature sensor
100 External sludge charging / conveying device
101 External sludge popper
102 Popper screw
103 casing
104 screw
108 Drive motor
112, 122 Non-emulsifying grease
113 T-shaped cylindrical rubber seal
117 O-type rubber seal
118 Self-aligning bearing
120 cover
121 Grease filler
123 rails
125 shoot
126 Guide
127 Roller plate
128 rollers
129 slide gate
130 Mounting plate
131 Arc bottom
132 V-shaped notch
133 substrate
134 Chloroplain rubber
135 Neoprene rubber
137 Power cylinder
138 Cylinder rod
139 Warm water to prevent splashing
a axis

Claims (8)

A device in which sludge is solidified by using a lime-based solidifying agent as a main solidifying agent,
An input section into which sludge and solidifying agent are separately input,
A stirring section in which the sludge and the solidifying agent charged are stirred;
A discharge unit for discharging the sludge solidified in the stirring unit,
The charging section includes a sludge and a solidifying agent hopper, each screw carrying the sludge and the solidifying agent supplied from each hopper to the stirring section, and the temperature in the stirring section is suitable for the hydration reaction of the sludge and the solidifying agent. In order to reach a temperature that promotes the hydration reaction, a warm air machine that sends warm air into the stirring unit and a rubber heater that heats the sludge wound around the outer periphery of the casing of the sludge screw,
The stirring unit includes a rotary drum that rotates by receiving the rotational force of a drive source in order to stir the sludge and the solidifying agent carried from the charging unit, and the rotary drum has three on its inner periphery, And the first stirring blade, the second stirring blade and the discharge blade having an area approximately 1.5 times that of the first stirring blade, and the first stirring blade from the charging portion side toward the discharge portion side, The second stirring blade is arranged at an angle of about 25 degrees and the discharge blade is arranged at an angle of about 90 degrees with respect to the axis at an angle of about 15 degrees,
The discharge unit is configured to discharge a solidified sludge that rotates in the same direction as the rotary drum disposed on the right side upper portion when viewed from the inside of the rotary drum in the stirring unit. An apparatus for solidifying sludge, comprising: a screw; and a chimney that is provided on the discharge unit base and is provided with a temperature sensor that controls a temperature of the hot air blower in the charging unit. The sludge solidification processing apparatus according to claim 1, wherein each of the first and second stirring blades arranged in the rotary drum is formed with an oblique notch along the discharge portion side. The sludge solidification processing apparatus according to claim 1, wherein the chimney in the discharge unit is formed by integrating a chimney unit and a head portion. The sludge solidification processing apparatus according to claim 1, wherein the discharge unit mount in the discharge unit has a structure in which a carry-out belt conveyor can be installed in three directions, right and left and front. A device in which sludge is solidified by using a lime-based solidifying agent as a main solidifying agent,
External sludge input / conveying device that inputs and conveys external sludge from the raw material popper,
An input unit into which the sludge and the solidifying agent from the external sludge input / conveyor are input separately,
A stirring section in which the sludge and the solidifying agent charged are stirred;
A discharge unit for discharging the sludge solidified in the stirring unit,
The external sludge charging / conveying device includes an external sludge hopper, a hopper screw that conveys the sludge charged into the external sludge hopper, and a sludge that is carried by the hopper screw and is charged into the charging portion via a screw chute. Sludge input amount adjusting means for adjusting the input amount of
The charging section includes a sludge and a solidifying agent hopper, each screw carrying the sludge and the solidifying agent supplied from each hopper to the stirring section, and the temperature in the stirring section is suitable for the hydration reaction of the sludge and the solidifying agent. In order to reach a temperature that promotes the hydration reaction, a warm air machine that sends warm air into the stirring unit and a rubber heater that heats the sludge wound around the outer periphery of the casing of the sludge screw,
The stirring unit includes a rotary drum that rotates by receiving the rotational force of a drive source in order to stir the sludge and the solidifying agent carried from the charging unit, and the rotary drum has three on its inner periphery, And the first stirring blade, the second stirring blade and the discharge blade having an area approximately 1.5 times that of the first stirring blade, and the first stirring blade from the charging portion side toward the discharge portion side, The second stirring blade is arranged at an angle of about 25 degrees and the discharge blade is arranged at an angle of about 90 degrees with respect to the axis at an angle of about 15 degrees,
The discharge unit is disposed on the discharge unit frame having a structure in which the carry-out belt conveyor can be installed in three directions, left, right, and front, and on the discharge unit frame and at the upper right side when viewed from the rotary drum in the stirring unit. A solidified sludge discharge screw that rotates in the same direction as the rotary drum, and a chimney and a camp are integrally installed on the discharge base, and the temperature of the hot air blower at the input portion is An apparatus for solidifying sludge characterized by comprising a chimney provided with a temperature sensor to be controlled. The sludge input amount adjusting means in the external sludge input / conveying device includes a slide gate that opens and closes the opening portion of the screw chute through a reciprocating motion of a driving source, and the slide gate has an arcuate bottom portion in front. The sludge solidification processing apparatus according to claim 5, wherein a V-shaped cutout portion is formed, and two kinds of rubbers having different hardnesses are formed in two layers on the gate substrate in order to enhance a sealing effect. . In the screw chute, made of rubber, and a warming for preventing scattering of approximately half the length of the screw chute opening is suspended, and when processing soft sludge, when the opening of the slide gate is small, When sludge is prevented from splashing to the left and right and rear, and when processing hard sludge such as dewatered cake, when the slide gate is fully open, the splash prevention warmth hangs down to the original substantially vertical state, The sludge solidification treatment apparatus according to claim 6, which does not interfere with discharge. The lower structure of the hopper screw in the external sludge charging / conveying device is such that a T-shaped cylindrical rubber seal is fitted on the outer periphery of the screw shaft via non-emulsifying grease, and the T-shaped cylindrical rubber seal An O-type rubber seal that rotates integrally with the screw shaft is fitted to the rear, and an automatic centering bearing for correcting the elliptical rotation of the screw shaft is provided behind the O-type rubber seal, and the screw shaft The solidified sludge according to claim 5, wherein a cover having a grease refueling port into which the O-type rubber seal and the self-aligning bearing are sealed and into which non-emulsifying grease is injected is provided at a rear end portion of the sludge. Processing equipment.

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