JP2007031033A - Skip conveyor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To convey a high temperature liquid mixture while certainly preventing reduction of the temperature by a bucket, to perform feeding of power to an electric heater for heating the bucket, to easily perform treatment of a cable and further to easily discharge the liquid mixture from the bucket to a receiving device. <P>SOLUTION: In the skip conveyor 1, the electric heater is mounted to an outer peripheral part of the bucket 7 lifting between a material receiving part A and a material discharge part B along a guide rail 4 by winding and unwinding of a wire rope 6 by a winch 5 and an automatic winding type cable reel 9 provided with a drum 34 on which the cable 8 having one end connected to a power source part is wound and in which the cable 8 is always urged to the winding side is installed at the material receiving part A side. The other end of the cable 8 wound on the drum 34 of the automatic winding type cable reel 9 is connected to a connector (power source connection part) 8b of the electric heater at a bottom part of the bucket 7. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a skip conveyor that conveys a liquid mixture formed by mixing powders such as steelmaking slag and silica sand and a high-temperature liquid such as molten sulfur.

Conventionally, a hopper, a weighing tank, a feeder, and a mixer are arranged in order from top to bottom on a vertically installed stand, and powder such as steelmaking slag, steelmaking dust, and incinerated ash that has been heated and dried with a rotary kiln or the like is placed in the hopper. The powder is weighed in the measuring tank and then fed into the mixer with a feeder, and liquid sulfur and additive are respectively introduced into the mixer from a sulfur tank and an additive tank, An apparatus for preparing a fluidized kneaded product (liquid mixture) by kneading the powder, liquid sulfur and additives in the mixer, and forming the liquid mixture into a predetermined shape to produce a sulfur-solidified molded product. It is known (see, for example, Patent Document 1).
And in the apparatus which manufactures the said sulfur solidification molding, it is necessary to convey the liquid mixture which is a high temperature material discharged | emitted from the said mixer to the shaping | molding apparatus provided with the shaping | molding mold etc. in the state which maintained predetermined temperature. is there. As a transport device that transports such a high-temperature material while suppressing the temperature drop, for example, an asphalt mixture manufactured at an asphalt plant and discharged from the mixer is received by a transport bucket provided with an electric heater of a trolley conveyor. In addition, it is known that it is transported up to a skip conveyor, further transported upward by a transport bucket provided with an electric heater of the skip conveyor, and thrown into the silo from the upper part thereof (for example, Patent Document 2). reference).
JP-A-8-318244 Japanese Utility Model Publication No. 5-89509

  In the sulfur tank trolley conveyor, a cable for supplying electric power to the electric heater provided in the transport bucket is extended sufficiently long from the fixed portion on the power supply side in anticipation of the range of movement of the transport bucket. Although the location is supported and guided by a support member with a pulley, the cable may hang down as it moves and interferes with it, or it may fall and hinder smooth movement of the transfer bucket. In addition, the skip conveyor is fixed along the rail that guides the transport bucket so that the power supply cable is fixed. However, if the maintenance is not performed properly, the skip conveyor is attached to the transport bucket. There is a risk that electrical leakage will occur from the sliding contact portion between the pantograph and the cable feeder.

The present invention has been made in view of the above circumstances, and is capable of transporting a high-temperature liquid mixture while reliably preventing a temperature drop by the bucket, and supplying power to an electric heater that heats the bucket. It is an object of the present invention to provide a skip conveyor that can be performed safely and easily handle cables.
Another object of the present invention is to provide a skip conveyor having a simple structure that can easily discharge a liquid mixture from a bucket to a receiving device.

The present invention is characterized by the following points in order to solve the above problems.
That is, the skip conveyor according to claim 1 is constructed such that a guide rail is installed from a lower material receiving portion to a material discharge portion which is supported by a gantry and is positioned higher than the material receiving portion, and a roller provided on the back is provided with the guide In a skip conveyor having a bucket that is guided by a rail and wound up and down along the guide rail by winding and unwinding a wire rope by a winch,
An electric heater is attached to the outer peripheral portion of the bucket excluding the material inlet / outlet, and a cable having one end connected to the power supply unit is wound around the material receiving unit, and the cable is constantly biased toward the winding side. An automatic winding type cable reel capable of winding and unwinding the cable with respect to the drum is installed, and the other end of the cable wound around the drum of the automatic winding type cable reel is connected to the drum. It is connected to the power supply connection part of the said electric heater in the bottom part on the opposite side to the said material entrance / exit of a bucket, It is characterized by the above-mentioned.

  The skip conveyor according to claim 2 is the skip conveyor according to claim 1, wherein a cylindrical wire guide that rotates around a horizontal axis perpendicular to the lifting and lowering direction of the bucket is formed at both ends of the skip conveyor according to claim 1. The wire rope is inserted into the inside of the wire guide and turned to both sides of the bucket to form two strips, and end portions of the winch It is characterized by being wound around a drum.

  A skip conveyor according to a third aspect is the skip conveyor according to the second aspect, characterized in that arc-shaped guide tubes bent in the radial direction are connected to both ends of the wire guide.

The present invention has the following excellent effects.
That is, according to the skip conveyor according to claim 1, since the high-temperature liquid mixture is conveyed by the electric heater attached to the outer periphery of the bucket, the liquid mixture is reliably conveyed while preventing the temperature decrease. Can be supplied to the receiving device. In addition, since power is supplied to the electric heater that heats the bucket by connecting the cable fed from the automatic winding cable reel to the power connection portion of the bucket, a pantograph is attached to the power supply line of the cable as in the past. Unlike the case of supplying electric power to the electric heater by sliding contact, there is no fear of leakage and it is safe. Furthermore, since the cable always keeps a tension state by the automatic winding type cable reel and moves to follow the bucket, it is not necessary to suspend, support and move the cable by a special support member, and to supply power to the electric heater of the bucket. Cable handling is easy.

  According to the skip conveyor according to claim 2, the bucket is easily overturned by winding the wire rope and raising the bottom side while the bucket is stopped at the material inlet / outlet side in the material discharge portion. The conveyed material can be smoothly discharged into the receiving device, whereby it is not necessary to provide a discharge gate that is opened and closed by a cylinder or the like at the bottom of the bucket, and the structure of the bucket can be simplified. In addition, since the wire rope is connected to the bucket via the wire guide, the bucket does not twist when the bucket falls, and when the posture changes with rising and falling, the bucket falls, While being able to stand up and change postures smoothly, damage to the wire rope can be prevented.

  According to the skip conveyor of the third aspect, since the wire rope is gently bent by the arcuate guide tube and connected to the bucket, an excessive bending stress does not act in the vicinity of the connection portion between the wire rope and the bucket. The damage of the wire rope at the connecting portion can be reliably suppressed.

Hereinafter, a skip conveyor according to an embodiment of the present invention will be described with reference to the accompanying drawings.
In FIG. 1, reference numeral 1 denotes a skip conveyor according to an embodiment of the present invention. The skip conveyor 1 includes a support base 2 installed in a lower material receiving part A, a base 3 installed in a material discharge part B positioned higher than the material receiving part A, the base 3 and the support base 2, a guide railt 4 installed between the two, a bucket 7 that moves up and down along the guide rail 4 by winding and feeding the wire rope 6 by the winch 5, and an electric heater (described later) attached to the bucket 7 On the other hand, an automatic winding cable reel 9 is provided which winds and feeds a cable 8 for supplying power.

  The guide rail 4 has an upper rail 10 and a lower rail 11 bent in an inverted shape so that a middle portion in the longitudinal direction is recessed, and is spaced at a fixed interval parallel to the left and right (direction perpendicular to the paper surface in FIG. 1). It is arranged with a gap. The pair of left and right lower rails 11 and 11 are formed of channel steel, and the lower end side is fixed to the support base 2 with the groove 11a sides (see FIG. 4) facing each other, and the upper end side is The frame 3 is fixed to the upper frame 3a of the gantry 3 via a horizontal rail portion 11b, and a middle portion in the longitudinal direction is supported on the floor F and the gantry 3 by a plurality of vertical supports 12a and horizontal supports 12b. Further, each lower frame 11 has an extended rail portion 11c whose upper inclined portion extends upward from the horizontal rail portion 11b, and an upper end frame 3b whose upper end portion is fixed on the upper frame 3a of the gantry 3. It is fixed. The groove 11a of the extended rail portion 11c is not communicated with the groove 11a of the inclined portion of the lower rail 11 by the upper side portion 11d of the horizontal rail portion 11b.

  Also, as shown in FIG. 4, the pair of left and right upper rails 10 and 10 (the left one is not shown in FIG. 4) is formed of L-shaped steel, and their horizontal sides 10a face each other. The horizontal side portion 10a is supported by the lower rail 11 by the connecting member 12c with a predetermined interval in parallel with the upper side portion 11d of the lower rail 11. The upper end side of the upper rail 10 extends upward from the horizontal rail portion 11b of the lower rail 11 to the middle of the extension rail portion 11c. The support 3c erected on the right end in FIG. 1 of the upper frame 3a of the gantry 3 and the upper end frame 3b are respectively paired with a predetermined interval in the left-right direction (direction perpendicular to the paper surface in FIG. 1). The sheaves 13a and 13b are supported rotatably around a horizontal axis.

Further, the guide rail 4 is provided with left and right supports 14 and 14 (the left one is not shown in FIG. 1) on a lower inclined portion near the bent portions of the left and right lower rails 11 and 11. A sheave 13c is supported at the upper end of each support 14 at a predetermined interval in the left-right direction (the direction perpendicular to the paper surface in FIG. 1), and is fixed to the support 14 while being rotatable about a horizontal axis. A cylindrical cable retainer 15a having a length extending between the supports 14 is supported on the projecting piece 15 so as to be rotatable about an axis parallel to the rotation axis of the sheave 13c.
Although not shown, a cover is provided above the guide rail 4 so as to surround the moving path of the bucket 7 in order to prevent heat dissipation from the bucket 7 that moves up and down along the guide rail 4.

  As shown in FIGS. 2 and 3, the bucket 7 has an arcuate bottom 7a and a front portion 7b joined to the front side edge of the bottom 7a (the right edge in FIG. 2 and the upper edge in FIG. 3). And a back part 7c joined to the rear side edge (lower edge in FIG. 3) of the bottom part 7a, and left and right (up and down parts in FIG. 3 is formed by side surfaces 7d and 7d in a direction perpendicular to the paper surface, and is an opening 7e that is widely open on the side opposite to the bottom 7a (front end side) and on the front end side of the front surface portion 7b. The front end side of the opening 7e is inclined wall surfaces 7d1 and 7d1 such that the front end sides of the side surface portions 7d and 7d are close to each other, and the height of the wall surface decreases as the front surface portion 7b side approaches the front end. By being inclined, it is formed into a tapered shoot shape.

Brackets 16a and 16b are fixed to the left and right bottom portions 7a of the rear surface portion 7c of the bucket 7 and the opposite tip side thereof so as to protrude left and right (outside) from the side surface portions 7d and 7d. Bearings 17a and 17b are fixed to the lower surfaces of the outer end portions of 16a and 16b, respectively. At both shaft ends of the rotary shaft 18 rotatably supported about the axis by a pair of bearings 17a, 17a (only the right side is shown in FIG. 4) fixed to the brackets 16a, 16a on the bottom 7a side, Parallel rollers (rollers) 19 and 19 with flanges which are located between the horizontal side portion 10a of the upper rail 10 and the upper side portion 11d of the lower rail 11 and roll along these surfaces are fixed via bolts with washers. ing. Further, both shaft ends of the rotary shaft 20 supported rotatably around the axis by a pair of bearings 17b and 17b (only the left one is shown in FIG. 4) fixed to the brackets 16b and 16b on the front end side, A tapered roller (roller) 21 with a flange that rolls along the upper and lower surfaces of the groove 11a of the lower rail 11 is fixed by a bolt through a washer.
The rotary shaft 18 on the bottom 7a side is inserted between the bearings 17a and 17a inside the cylindrical member 22 fixed to the brackets 16a and 16a with a gap between them.

  Further, cylindrical support members 23 and 23 are provided on the outside of the bottom portion 7a of the bucket 7 at positions close to the back surface portion 7c and at positions close to the side surface portions 7d and 7d. A cylindrical rotating member 24, 24 is supported on each support member 23, 23 so as to be rotatable about an axis by bearings 24a, 24a. Cylindrical wire guides that are bent in the radial direction of the rotating member 24 and extended along the outside of the side surface portion 7d at outer end portions (end portions on the side surface portion 7d side) of the rotating members 24, 24. A member (guide cylinder) 25 is fixed. The free end portion of the wire guide member 25 is formed in a trumpet-like portion 25a that widens forward. The rotating member 24 and the wire guide member 25 constitute a wire guide 26. In the figure, reference numeral 25b denotes a reinforcing member fixed along the wire guide inside the arc of the wire guide member 25.

  Two ends on one end side are wound around the drum of the winch 5, and are wound around sheaves 13 a, 13 b, 13 c respectively supported by the upper end frame 3 b and the support 3 c of the gantry 3 and the support 14 of the guide rail 4. The two wire ropes 6 arranged along the both sides of the guide rails 4 and 4 are wire clips after the two end portions on the other end side are inserted into the wire guide 26 of the bucket 7. 27. As a result, the wire rope 6 is freely rotated from the bottom portion 7b of the bucket 7 to the both side surface portions 7d and 7d, and then both end portions thereof are simultaneously wound and fed around the drum of the winch 5. It has become.

As shown in FIGS. 6 to 9, heating wires are arranged on the outer periphery of the bucket 7 along the bottom surface 7 a and the back surface portion 7 c, with the tip end side of the bucket 7 as a turning point, along the side surface portions 7 d and 7 d. The first electric heater H1 meandering in such a manner (located in the upper half area in FIG. 6, the right side in FIG. 8, the lower half area in FIG. 9), and the second electric heater H2 (in FIG. 6). 8 on the lower side, the left side in FIG. 8, and the upper half in FIG. 9), and the bottom 7a side and the front end side of the bucket 7 along the both side surface parts 7d and 7d. Third and fourth electric heaters H3 and H4 are provided which are meandered so that the heating wires are aligned along the direction. Since the fourth electric heater H4 has the same heating wire arrangement as the third electric heater H3, the illustration is omitted. Each of the electric heaters H1 to H4 may be installed in a meandering manner so that their heating wires are aligned in a direction perpendicular to the alignment direction.
A temperature detector T including a resistance temperature detector for detecting the heating temperature of the bucket 7 heated by the first to fourth electric heaters H1 to H4 is installed on one of the side surfaces 7d and 7d. ing.

As shown in FIG. 10, the first to fourth electric heaters H1 to H4 and the temperature detector T are configured such that the first and third electric heaters H1 and H3 are connected to the first power connection box 28a. The second and fourth electric heaters H2 and H4 are connected to the control panel 29 by the cable 8 through the first power supply connection box 28a after being connected to the second power supply connection box 28b. A detector T is connected to the control panel 29 by the cable 8 through a detector connection box 30, and the control panel 29 is connected to each electric heater based on the temperature of the bucket 7 detected by the temperature detector T. The heating temperature of H1-H4 is controlled.
Further, a heat insulating material 31 such as rock wool is attached to the outer periphery of the bucket 7 so as to surround the electric heaters H <b> 1 to H <b> 4 by a metal mesh or the like. 6 to 9, K is a heater mounting chip for fixing the heating wires of the electric heaters H1 to H4 to the bottom portion 7a, the front surface portion 7b, the back surface portion 7c, and the both side surface portions 7d and 7d of the bucket 7.

  An automatic winding cable reel 9 that winds and feeds the cable 8 is a drum 34 that is rotatably supported by a pair of bearings around a hollow shaft 33 that is horizontally fixed to an upper end portion of a support base 32. And a plurality of spiral springs 35 that are housed in the body 34a of the drum 34 and constantly urge the drum 34 in the direction of winding the cable, and are connected to the power supply unit via the control panel 29. The fixed side cable 8a and the slip ring 36 for connecting the base end portion of the wiring of the cable 8 wound around the trunk portion 34a are provided. And the front-end | tip part of the cable 8 drawn | fed out from the trunk | drum 34a of the said drum 34 is the said electric heaters H1-H4 and the said temperature via the connector 8b attached to the center of the bottom part 7a of the said bucket 7. It is connected to the detector T. Note that the automatic winding cable reel 9 is provided with a torque motor or the like in the rotation transmission mechanism of the drum 34 instead of the spiral spring 35, and when the torque more than the set torque acts on the cable 8, the drum When the cable 34 is fed out and below the set torque, the drum 34 may take up the cable 8.

The effect | action of the skip conveyor 1 of the said structure is demonstrated based on the case where the said skip conveyor 1 is applied to the sulfur solidified material manufacturing plant 40 shown in FIG.
First, the said sulfur solidified material manufacturing plant 40 is demonstrated. As shown in FIG. 12, this sulfur solidified material production plant 40 is a kneaded material supply device for supplying a liquid kneaded material obtained by kneading coal ash with molten sulfur (high temperature liquid) that has been modified by adding an additive. 41, an aggregate (powder) such as steelmaking slag and silica sand dried and heated by an aggregate heating supply device 42 such as a dryer and conveyed by a bucket elevator 43, and a high-temperature liquid supplied from the mixture supply device 41 A metering and mixing device 44 for measuring and mixing the kneaded material is provided.

  The weighing and mixing device 44 receives and stores the aggregate conveyed by the bucket elevator 43 in a hot bin (receiving device) 45, and puts the aggregate into the powder weighing tank 46 in a timely manner to measure the mass in the load cell 46a. After the measurement, the gate 47a is opened and put into the biaxial paddle type mixer 47. Then, the liquid kneaded material supplied from the kneaded material supply device 41 through the pipe p1 is received in the liquid measuring tank 48, weighed by the load cell 48a, sent to the mixer 47 through the pipe p2 by the pump 48b, and the pipe p2 The spray tube 47b provided at the tip is sprayed on the aggregate inside the mixer 47, and the mixer 47 agitates and mixes the aggregate and the high-temperature liquid kneaded material.

  The liquid mixture of the aggregate and the liquid kneaded material kneaded by the mixer 47 is received by the bucket 7 of the skip conveyor 1 via the hopper 49 and conveyed upward, and is sent to the sulfur solidified material molding device 50. Supplied. In the sulfur solidified material molding apparatus 50, the liquid mixture supplied from the skip conveyor 1 is stored in the surge bin 51, dropped into the placing hopper 52 at an appropriate time, and then weighed in the load cell 52a before being formed. 53. The liquid mixture placed in the mold 53 is cured by passing through a predetermined cooling time to produce a molded sulfur solidified product.

Further, above the inside of the kneaded product supply device 41, the mixer 47, and the liquid measuring tank 48, an inert gas such as nitrogen gas is supplied from the gas tank 54a of the inert gas supply source 54 through the pipe p3 by the compressor 54b. The liquid contained in each of the devices 41, 47, 48 is cut off from the air by being supplied with pressure.
The mixer 47, the liquid measuring tank 48, the pump 48b, and the pipes p1 and p2 are circulated and supplied with hot oil from the hot oil heater 55 through the pipes 55a and 55b to the oil jacket provided on the outer periphery thereof. They are heated to a predetermined temperature (for example, 130 to 150 ° C.). Although not shown, the kneaded product supply device 41 is also heated to a predetermined temperature (for example, 130 to 150 ° C.) by supplying hot oil to an oil jacket provided on the outer periphery.

Next, the effect | action of the skip conveyor 1 which concerns on embodiment at the time of using for the said sulfur solidified material manufacturing plant 40 is demonstrated concretely. When the operation of the sulfur solidified product manufacturing plant 40 is started, the hot oil (130 to 150 ° C.) is supplied from the hot oil heater 55 through the pipe 55a to the pipes p1, p2, the mixer 47, the liquid measuring tank 48, and the pump 48b. These oil jackets are supplied and heated, and the kneaded product supply device 41, the aggregate drying heating device 42, and the inert gas supply source 54 are operated. Furthermore, electric power is supplied from the power supply unit to the electric heaters H <b> 1 to H <b> 4 of the bucket 7 by the cable 8 through the automatic cable reel 9.
Then, the aggregate dried and heated to, for example, 130 to 150 ° C. by the aggregate heating and supplying device 42 is introduced from the material input port 43a into the bucket elevator 43 through the pipe 42a, and conveyed upward by the internal bucket. It is supplied into the hot bottle 45 of the metering and mixing device 44 through the gate 7a opened from the chute 43b.

  Aggregate supplied into the hot bottle 45 is measured in the powder measuring tank 46, and then put into the mixer 47 through the gate 47a, measured from the liquid measuring tank 48, and sprayed by the spray tube 47b. Stir and mix with the liquid kneaded material to be sprayed. The high temperature (130 to 150 ° C.) liquid mixture (high temperature liquid) obtained by mixing the aggregate and the liquid kneaded material is guided by the guide rail on the support base 2 side when the gate 47c at the bottom of the mixer 47 is opened. 4, the winch 5 is driven to wind the wire rope 6 around the drum of the winch 5. As a result, the bucket 7 containing the liquid mixture is guided by the taper rollers 21 and 21 on the tip side thereof to the lower rail 11, and the parallel rollers 19 and 19 on the bottom 7a side are guided by the lower rail and the upper rail 10. It is conveyed upward.

When the bucket 7 reaches the upper end side of the upper and lower guide rails 10 and 11, the tapered rollers 21 and 21 on the front end side move to the horizontal rail portion 11b of the lower guide rail 11 and the height position does not change. On the other hand, since the parallel roller 19 on the bottom 7a side is continuously guided and moved upward by the upper guide rail 10 and the extension rail 11c, the bucket 7 has the bottom 7a side as a fulcrum with the axis of the tapered roller 21 on the tip side as a fulcrum. It will turn and fall to be higher. As a result, the liquid mixture contained in the bucket 7 is introduced into the surge bin 51 from the opening 7e through the inlet having the gate opened. When the liquid mixture has been charged into the surge bin 51, the winch 5 is reversed and the bucket 7 is returned to the lower end of the guide rail 4 on the support base 2.
The lower end of the guide rail 4 is provided with a switch for detecting the arrival at the lower end of the bucket 7 and stopping the operation of the winch 5 and a cushion member for buffering an impact when the bucket 7 is stopped. .

When the skip conveyor 1 is operated, the bucket 7 is heated to 130 to 150 ° C. by the electric heaters H1 to H4 provided on the outer periphery thereof, so that the liquid mixture accommodated in the bucket 7 dissipates heat. Instead, it is transported while being maintained at a predetermined temperature when supplied from the mixer 47, and supplied to the surge bin 51 without changing its properties.
The heating temperature of the bucket 7 is detected by a temperature detector T installed on one side surface portion 7d, and is controlled by the control panel 29 based on the detected temperature, so that the set temperature is not affected by outside air or the like. Is maintained.

When the bucket 7 is moved up and down along the guide rail 4 by winding and unwinding the wire rope 6 by the winch 5, the bucket 7 changes in posture in various ways, but the end of the wire rope 6 on the bucket 7 side. Since the portion is inserted and connected to the wire guide 26 rotatably supported on the bottom portion 7a of the bucket 7, the wire rope 6 is twisted or extremely bent and damaged as the posture of the bucket 7 changes. In addition, when the bucket 7 falls and rises at the rising end, these operations are performed smoothly.
Further, the cable 8 that supplies electric power to the electric heaters H1 to H4 installed in the bucket 7 and supplies the detection signal of the temperature detector T to the control panel 29 is always moderately tensioned by the automatic winding type cable reel 9. As the bucket 7 follows the movement of the bucket 7 and is wound around the drum 34, the cable 8 is prevented from dripping or hanging when the bucket 7 is raised or lowered, preventing the bucket 7 from moving up and down. Is done.
When the bucket 7 moves above the middle bent portion of the guide rail 4, the upper surface side of the cable 8 is guided and supported by the cable presser 15 a supported by the projecting piece 15 of the support 14.

  As described above, the skip conveyor 1 according to the embodiment is configured such that the surge bin is supported by the base 3 from the support base 2 of the lower material receiving portion A and disposed at the material discharge portion B higher than the material receiving portion A. (Receiving device) The guide rail 4 is installed over 51, and the parallel roller 19 and the taper roller 21 provided on the back surface portion 7c are guided by the guide rail 4 and the wire rope 6 is wound and unwound by the winch 5 to thereby guide the guide rail 4, the electric heaters H <b> 1 to H <b> 4 are attached to the outer peripheral portion excluding the opening (material inlet / outlet) 7 e side of the bucket 7, and the power receiving portion is connected to the material receiving portion A side. A cable 8 to which one end is connected is wound, and the cable 8 is always urged toward the winding side, and the cable with respect to the drum 34 is provided. Is installed, and the other end of the cable 8 wound around the drum 34 of the automatic winding cable reel 9 is opposite to the opening 7e of the bucket 7. The bottom portion 7a is connected to the power supply connection portion 28a via the connector 8b of the electric heaters H1 to H4.

  Therefore, according to the skip conveyor 1 which concerns on embodiment, since it conveys in the state which always heated the high temperature liquid mixture with the electric heaters H1-H4 attached to the outer periphery of the bucket 7, the liquid mixture is reliably lowered in temperature. It can prevent and convey and can supply to the surge bin 51 as a required receiving apparatus. In addition, since the power supply to the electric heaters H1 to H4 for heating the bucket 7 is performed by connecting the cable 8 fed from the automatic winding cable reel 9 to the power supply connection portion 28a of the bucket 7, Unlike the case of supplying power to the electric heater by sliding the pantograph on the power supply line of the cable 8, there is no fear of leakage and it is safe. Further, since the cable 8 always keeps a tension state and moves following the bucket 7 by the automatic winding cable reel 9, there is no need to suspend, support and move the cable 8 by a special support member. Processing of the power supply cable 8 to the heaters H1 to H4 is easy.

Further, according to the skip conveyor 1 according to the embodiment, the cylindrical wire guide 26 that rotates around the horizontal axis perpendicular to the lifting and lowering direction of the bucket 7 is provided at both ends of the outer surface of the bottom portion 7 a of the bucket 7. Is provided so as to protrude outward from the side surfaces (side surfaces) 7d and 7d of the bucket 7, and the wire rope 6 is inserted into the wire guide 26 and rotated toward the both side surfaces 7d and 7d of the bucket 7. These end portions are wound around the drum of the winch 5.
Therefore, in the material discharge part B, with the bucket 7 being stopped on the opening part 7e side, the bottom part 7a side is raised by winding the wire rope 6, so that the bucket 7 has been easily overturned and conveyed. The liquid mixture as a material can be discharged into the surge bin 51, and it is not necessary to provide a discharge gate that opens and closes by a cylinder or the like at the bottom 7a of the bucket 7, and the structure of the bucket 7 can be simplified. In addition, since the wire rope 6 is connected to the bucket 7 via the wire guide 26, the wire rope is not twisted when the bucket 7 falls, stands up or changes its posture along with raising and lowering. The bucket 7 can smoothly fall, stand up, and change its posture, and the wire rope 6 can be prevented from being damaged.

Furthermore, according to the skip conveyor 1 according to the embodiment, since the arc guide tube 25 bent in the radial direction is connected to both ends of the wire guide 26, the wire rope 6 is Since it is gently bent by the arcuate guide tube 25 and connected to the bucket 7, excessive bending stress does not act near the connecting portion between the wire rope 6 and the bucket 7, and the wire rope 6 is damaged at the connecting portion. Can be reliably suppressed.
In the skip conveyor 1 according to the embodiment, the electric heaters H1 to H4 are provided in a region excluding the back surface portion 7c of the bucket 7 and the tip side portions of the side surface portions 7d and 7d. However, the present invention is not limited to this, and the electric heater H5 and electric heaters H6 and H7 may be provided at the front end portions of the back surface portion 7c and the side surface portions 7d and 7d, respectively, as indicated by chain lines in FIGS. . In that case, even in severe cold in winter, the temperature drop of the liquid mixture due to heat radiation from the portion on the tip side of the bucket 7 can be reliably suppressed and used suitably.

It is a side view which shows the skip conveyor which concerns on one embodiment of this invention. It is a top view which similarly shows the bucket of a skip conveyor. It is a side view similarly. FIG. 3 is a cross-sectional view taken along the line II in FIG. 2. FIG. 4 is a cross-sectional view of FIG. It is a top view which shows the attachment state of the electric heater in a bucket. Similarly, it is a right side view. It is a bottom view similarly. It is a back view similarly. Similarly it is a connection diagram of an electric heater. It is sectional drawing of an automatic winding type cable reel. It is a systematic diagram showing an example of a sulfur solidified product manufacturing plant to which a skip conveyor according to an embodiment of the present invention is applied.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Skip conveyor 2 Support stand 3 Base 4 Guide rail 5 Winch 6 Wire rope 7 Bucket 8 Cable 9 Self-winding type cable reel 10 Upper guide rail 11 Lower guide rail 18, 20 Rotating shaft 19 Parallel roller (roller)
21 Tapered roller (roller)
24 Rotating member 25 Wire guide member (guide tube)
26 Wire guide 28a, 28b Power supply connection box 29 Control panel 34 Drum H1, H2, H3, H4 First, second, third and fourth electric heaters T Temperature detector

Claims (3)

A guide rail is installed from a lower material receiving portion to a material discharge portion which is supported by a gantry and is positioned higher than the material receiving portion, and a roller provided on the back is guided by the guide rail to wind a wire rope by a winch. In a skip conveyor provided with a bucket that moves up and down along the guide rail by taking out,
An electric heater is attached to the outer peripheral portion of the bucket excluding the material inlet / outlet, and a cable having one end connected to the power supply unit is wound around the material receiving unit, and the cable is constantly biased toward the winding side. An automatic winding type cable reel capable of winding and unwinding the cable with respect to the drum is installed, and the other end of the cable wound around the drum of the automatic winding type cable reel is connected to the drum. A skip conveyor, which is connected to a power supply connection portion of the electric heater at a bottom portion of the bucket opposite to the material inlet / outlet.   On the outer surface of the bottom portion of the bucket, a cylindrical wire guide that rotates around a horizontal axis perpendicular to the lifting and lowering direction of the bucket is provided with its both ends protruding outward from both side surfaces of the bucket, and the wire rope is 2. The skip according to claim 1, wherein the wire guide is inserted into the wire guide and is turned to both sides of the bucket to form two strips, and ends thereof are wound around the drum of the winch. Conveyor. The skip conveyor according to claim 2, wherein arc guide tubes bent in the radial direction are connected to both ends of the wire guide.

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