JP2007030908A - Silo for conserving liquid mixture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To store a liquid mixture at a high temperature under a stable condition for a long period by surely preventing the temperature of the liquid mixture from lowering, and to meter a specified amount at a required time to feed it to a solid article molding apparatus. <P>SOLUTION: A silo 1 for conserving the liquid mixture is equipped with a receiving hopper 4 which is supported by a trestle 2, has a material feeding opening 4a opened and closed by an opening/closing lid device 3 on its upper part and a material outlet 4b opened and closed by an opening/closing gate 5 on its lower end, and can be hermetically closed, and a metering hopper 6 which is provided below the receiving hopper 4, has a material receiving opening 6a connected with the material outlet 4b of the receiving hopper 4 on its upper end, and a material discharging opening 6b opened and closed by an opening/closing gate 7 on its lower end, and can be hermetically closed. The metering hopper 6 is provided by supporting a plurality of supporting legs 6f provided on its circumference on the trestle 2 through a load cell 8, and the material receiving opening 6a is hermetically and relatively movably connected to the material outlet 4b of the receiving hopper 4 through a bellows. An electric heater (heating means) is provided on the outer peripheries of the receiving hopper 4 and the metering hopper 6. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a liquid mixture storage silo for storing a liquid mixture formed by mixing a powdery aggregate such as coal ash and incinerated ash 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 powdered aggregates such as steelmaking slag, steelmaking dust, and incinerated ash that are heated and dried with a rotary kiln, etc. It is supplied to the hopper and stored, and the powdered aggregate is weighed in the measuring tank and then fed into the mixer by a feeder, and liquid sulfur and additives are pumped from the sulfur tank and the additive tank through pumps, respectively. A fixed amount is supplied to the mixer, and the powdered aggregate, liquid sulfur and additives are kneaded in the mixer to prepare a fluid kneaded product (liquid mixture), and the liquid mixture is formed into a predetermined shape. An apparatus for producing a sulfur-solidified molded product is known (for example, see Patent Document 1).
JP-A-8-318244

  However, in the sulfur solidified molded product manufacturing apparatus, the liquid mixture discharged from the mixer is transported to a place where the molding apparatus is installed by a cooker car and placed in a molding die or the like. Since it is necessary to complete the molding by putting it into the mold before the temperature drops so much, always store the liquid mixture, and supply the required amount to the molding equipment when necessary, so that the sulfur solidified molded product There is a problem that cannot be manufactured.

  The present invention has been made in view of the above circumstances, and stores a high-temperature liquid mixture in a state that reliably prevents temperature drop and maintains stable properties for a long period of time, and measures a predetermined amount when necessary. It is an object of the present invention to provide a liquid mixture storage silo that can be supplied to a solidified molding apparatus.

The present invention is characterized by the following points in order to solve the above problems.
That is, the liquid mixture storage silo according to claim 1 is supported by the gantry and has a material input port that is opened and closed by an open / close lid device at the top, and a material flow that is opened and closed by the open / close gate at the lower end. A receiving hopper that has an outlet and can be sealed, a material receiving port that is provided below the receiving hopper, connected to the material outlet of the receiving hopper at the upper end, and opened and closed by an opening and closing gate at the lower end. A liquid mixture storage silo comprising a weighing hopper that has an outlet and can be sealed, wherein the weighing hopper is provided with a plurality of support legs provided around the hopper and supported by the gantry via a load cell. The material receiving port is connected to the material outlet of the receiving hopper in an airtight and relatively movable manner by a flexible cylindrical member, and heating means is provided on the outer periphery of the receiving hopper and the weighing hopper. But It is characterized by being deposited.

  The liquid mixture storage silo according to claim 2 is the liquid mixture storage silo according to claim 1, wherein the opening / closing lid device of the receiving hopper includes a lid plate, and a closed position and an open position of the material input port. A lid plate moving means for guiding and moving between the lid plate and the lid plate pressing means for pressing the lid plate against the material input port at the closed position, and releasing the pressure from the material input port. It is characterized by having.

  The liquid mixture storage silo according to claim 3 is the liquid mixture storage silo according to claim 2, wherein the opening / closing lid device detects position movement of the lid plate to the closed position and movement to the open position. Means and a pressure detection means for detecting the pressure and separation of the lid plate against the material input port, and when the position detection means detects the movement of the lid plate to the closed position, the lid plate pressing means The lid plate is pressed against the material inlet, and when the separation of the lid plate from the material inlet by the press detection means is detected, the lid plate moving means moves the lid plate to the open position. It is characterized by that.

  The liquid mixture storage silo according to claim 4 is the liquid mixture storage silo according to any one of claims 1 to 3, wherein a vibration generating means is attached to each bottom of the receiving hopper and the weighing hopper. It is said.

The present invention has the following excellent effects.
In other words, according to the liquid mixture storage silo according to claim 1, the material mixture inlet of the receiving hopper is sealed by the opening / closing lid device for the liquid mixture introduced into the receiving hopper whose material outlet is closed by the opening / closing gate. In the state, it can be heated to a predetermined temperature by the heating means provided on the outer periphery of the receiving hopper, so that the high temperature liquid mixture is reliably prevented from lowering its temperature and kept stable for a long period of time. Can be stored. In addition, by charging the liquid mixture in the receiving hopper into the weighing hopper and measuring the input amount with the load cell of the weighing hopper, a predetermined amount of the liquid mixture can be supplied to the solidified molding device when necessary. Thereby, manufacture of the solidification molding by a liquid mixture can be performed efficiently.

  According to the liquid mixture storage silo according to claim 2, when the material charging port of the receiving hopper is closed by the lid plate, the lid plate is pressed against the material charging port by the lid plate pressing means so that the material charging port is airtight. Therefore, it is possible to suppress the heat of the liquid mixture from being dissipated to the outside as much as possible through the material input port, and when the material input port is opened, the cover plate is pressed by the cover plate pressing means. Therefore, the lid plate moving means can smoothly move the lid plate to the open position.

  According to the liquid mixture storage silo according to the third aspect, by detecting the operation position of the lid plate by the position detection means and the pressure detection means, the linkage operation of the lid plate moving means and the lid plate pressing means is accurately performed without error. Therefore, the opening and closing and the sealing operation of the material input port by the cover plate can be smoothly and reliably performed.

  According to the liquid mixture storage silo according to claim 4, the liquid mixture adheres to the inner wall surface and the bottom of the receiving hopper and the weighing hopper by applying vibration to the receiving hopper and the weighing hopper by the vibration generating means in a timely manner. In addition, it is possible to reliably prevent the powdered aggregate from being separated from the liquid, precipitated, attached and deposited on the bottom.

Hereinafter, a liquid mixture storage silo according to an embodiment of the present invention will be described with reference to the accompanying drawings.
In FIG. 1, 1 is a liquid mixture storage silo according to an embodiment of the present invention. The liquid mixture storage silo 1 is supported by a gantry 2 and the gantry 2, and has a material input port 4 a that is opened and closed by an opening / closing lid device 3 at an upper portion, and a material flow that is opened and closed by an opening and closing gate 5 at a lower end. A receiving hopper 4 having an outlet 4b that can be sealed, and a material receiving port 6a that is supported by the gantry 2 and provided below the receiving hopper 4 and connected to the material outlet 4b of the receiving hopper 4 at the upper end. A measuring hopper 6 having a material discharge port 6b opened and closed by an opening / closing gate 7 at the lower end and capable of being sealed.

The receiving hopper 4 has an inverted conical (funnel-shaped) bottom 4d joined to a lower end of a cylindrical body 4c, and the material outlet 4b is connected to the center of the bottom 4d. An upper plate 4e having a funnel-shaped material input port 4a attached thereto is fixed to the upper end of 4c. Further, the receiving hopper 4 includes a plurality of (four in the illustrated example) support legs 4f fixed around the lower end of the body 4c at equal intervals in the circumferential direction. It is supported by the gantry 2 by being fixed with bolts and nuts.
The weighing hopper 6 has an inverted conical (funnel-shaped) bottom 6d joined to the lower end of a cylindrical body 6c, and the material discharge port 6b is connected to the center of the bottom 6d. An upper plate 6e having the cylindrical material receiving port 6a attached thereto is fixed to the upper end of the body portion 6c. Further, the weighing hopper 6 includes a plurality of (four in the illustrated example) support legs 6f fixed at equal intervals in the circumferential direction around the intermediate portion of the bottom portion 6d. Is supported by the gantry 2 by being attached via the load cell 8.

  As shown in FIGS. 6 and 7, the material outlet 4 b of the receiving hopper 4 is made of a cylindrical member, and an annular connection flange 4 b 1 is fixed to the lower end. Further, as shown in FIGS. 6 and 7, the material receiving port 6a of the weighing hopper 6 is made of a cylindrical member having a flange 6a1 at the upper end, and a connection flange 9a is fixed to the upper end on the inner side thereof. A chute 9 made of a cylindrical member to which the mounting flange 9b is fixed is inserted with a gap between the material receiving port 6a, and the mounting flange 9b of the chute 9 and the flange 6a1 of the material receiving port 6a are cylindrical. An opening of the material receiving port 6a is hermetically closed with a bellows (a flexible cylindrical member) 10 interposed therebetween, and the receiving hopper 4 and the weighing hopper 6 move relatively vertically and horizontally (fine movement). ) Connected to possible. The connection flange 4b1 of the material outlet 4b of the receiving hopper 4 and the connection flange 9a of the chute 9 are assembled together by bolts 11a and nuts 11b with the opening / closing gate 5 therebetween.

  As shown in FIG. 7, the open / close gate 5 includes a valve box 5a, and a gate 5c that opens and closes a flow path 5b that is provided in the valve box 5a and connects the flow paths of the material outlet 4b and the chute 9. And an air cylinder 13 fixed to a support flange 5d provided on the outer periphery of the valve box 5a via a yoke 12, and the gate 5c coupled to a rod 13a of the air cylinder 13 by a pin 13b is connected to the air cylinder 13 7 is moved in the left-right direction in FIG. 7 to open and close the flow path 5b. Since the opening / closing gate 7 of the material discharge port 6b of the weighing hopper 6 has the same basic configuration except that the diameter is smaller than that of the opening / closing gate 5, the description thereof is omitted. At the lower end of the open / close gate 7, a discharge chute 14 is provided in which the connection flange 14 a at the upper end together with the open / close gate 7 is connected to the material discharge port 6 b of the weighing hopper 6.

  On the outer side below the bottom portions 4d and 6d of the receiving hopper 4 and the weighing hopper 6 (on the side close to the material outlet 4b and the material outlet 6b), a rotating shaft having an eccentric weight is rotated to receive the receiving hopper 4 and A vibration motor (vibration generating means) 15 for vibrating the weighing hopper 6 is attached. Although not shown, the receiving hopper 4 and the weighing hopper 6 are provided with electric heaters (heating devices) for heating the liquid mixture in the barrels 4c and 6c and the bottoms 4d and 6d. Means). The heating temperature of the electric heater is controlled by a controller based on the temperature detected by a temperature sensor (not shown) provided at the bottoms 4d and 6d of the receiving hopper 4 and the weighing hopper 6. Further, a heat insulating material 16 made of glass wool or the like is attached to the outer periphery of the receiving hopper 4 and the weighing hopper 6 so as to cover the electric heater.

Further, as shown in FIGS. 2 to 5, the opening / closing lid device 3 of the receiving hopper 4 guides the lid plate 17 between the closed position and the opened position of the material charging port 4a, A lid plate moving means 18 for moving, and a lid plate pressing means 19 for pressing the lid plate 17 against the material charging port 4a at the closed position and releasing the pressing from the material charging port 4a. It has.
The lid plate 17 is formed of a rectangular flat plate having four corners in an arc in plan view (FIG. 2), a reinforcing member 17a is fixed to the upper surface, and the lid plate 17 is attached to the lower end flange of the material charging port 4a on the lower surface. A seal plate 17b is adhered to seal the inside of the receiving hopper 4 when pressed by 4g.

  The lid plate moving means 18 supports the lid plate guide frame 20 by supporting the lid plate 17 and the lid plate guide frame 20 formed by joining grooved steels with their groove sides facing each other and forming a rectangular frame shape in plan view. A cover plate support frame 21 that moves along the frame 20, and drive means 22 that includes an actuator that moves the cover plate support frame 21 along the cover plate guide frame 20 are provided. The lid plate guide frame 20 is configured to be long in the front-rear direction (left-right direction in FIGS. 2 and 3), and left and right (in FIG. 2 opposite to the material input port 4a of the receiving hopper 4). The support shafts 23, 23 that are horizontally fixed vertically are supported by bearings 24a, 24a on the lower ends of a pair of supports 24, 24 that are vertically and horizontally adjustable on the upper end beam 2 of the frame 2. The support shafts 23 and 23 are provided so as to be pivotable up and down.

  The cover plate support frame 21 has a pair of vertical members 21a and 21a formed in a rectangular tube shape by closing the groove side of the grooved steel with a flat plate, and a vertical member 20a of the cover plate guide frame 20 left and right (up and down in FIG. 2). , 20a are arranged so as to be parallel to each other, and the vertical members 21a, 21a are connected to each other by a rectangular tubular horizontal member 21b and an L-shaped horizontal member 21c, 21c. . Then, two pairs of left and right and front and rear support shafts 25 that are horizontally protruded and fixed to the left and right of the vertical members 21a and 21a are respectively provided with flanged rollers 26 through bearings provided inside them. It is supported to rotate within. Each roller 26 is inserted into the grooves 20 a 1, 20 a 1 of the vertical members 20 a, 20 a of the lid plate guide frame 20 to roll, and the lid plate support frame 21 extends along the lid plate guide frame 20. It can be moved back and forth.

Inside the vertical members 21a, 21a of the lid plate support frame 21, support tools 27, 27 are fixed to the front and rear, and support rods 27b that are suspended and fastened to the support tools 27, 27 with nuts 27a. The four corners of the cover plate 17 are fixed to the lower end of the cover plate with screws 27c. Accordingly, the lid plate 17 is held horizontally by the lid plate support frame 21 and is moved along the vertical members 20a and 20a of the lid plate guide frame 20 together with the lid plate.
The drive means 22 is pivoted up and down via a pin shaft 29a to a bracket 29 in which an air cylinder 28 as an actuator is fixed at the center of the lateral member 20b on the rear end side of the lid plate guide frame 20. The tip of the rod 28a of the air cylinder 28 is supported freely, and is connected to a connection fitting 28c projecting from the upper surface of the horizontal member 21b of the lid plate support frame 21 via a connector 28b so as to be pivotable up and down. It is configured.

  The lid plate pressing means 19 includes an air cylinder 31 as an actuator supported by a bracket 30 fixed to the upper plate 4e of the receiving hopper 4 so as to rotate in a vertical plane via a pin shaft 30a. The rod 31a of the air cylinder 31 is connected by a pin shaft 31d to a connection fitting 31c fixed to the transverse member 20b on the front end side of the lid plate guide frame 20 via a connecting tool 31b at the upper end thereof. When the air cylinder 31 expands and contracts the rod 31a, the lid plate guide frame 20 rotates up and down around the support shaft 23, and the lid plate 17 moves up and down via the lid plate support frame 21. It comes to move.

  A pair of limit switches 33a and 33b can be adjusted in the front-rear direction on a vertical member 20a on the left side (upper side in FIG. 2) of the lid plate guide frame 20 via a support member 32 fixed to the front side and the rear side. On the other hand, on the left vertical member 21a of the lid plate support frame 21, a switch operating piece 35 is fixedly provided near the middle via a support member 34, and the lid plate 17 is When the switch operating piece 35 is positioned at the upper position (closed position) of the material inlet 4a of the receiving hopper 4 (at the position indicated by the solid line in FIG. 2), the switch operating piece 35 is the front inclined surface. When the front limit switch 33a is operated and the cover plate 17 is positioned at the rear end position (open position) of the cover plate guide frame 20 with the material input port 4a of the receiving hopper 4 opened, the switch operating piece 3 There has been adapted to operate the limit switch 33b of the rear side inclined face of the rear side.

  A limit switch 37 is attached to a support member 36 fixed to the gantry 2 or the upper plate 4e of the receiving hopper 4 so that the position can be adjusted up and down and forward and backward, and supported by a front side member 20b of the lid plate guide frame 20. A switch actuating piece 39 is attached via a member 38. The switch actuating piece 39 is formed in an inclined surface in the same manner as the switch actuating piece 35, and the lid plate 17 is located at the closed position. When the lid plate guide frame 20 (lid plate support frame 21) is lowered by the air cylinder 31, the limit switch 37 is operated on the lower inclined surface, and the lid plate 17 closes the material inlet 4a. When the lid plate guide frame 20 is raised by the air cylinder 31 and the limit switch 37 is inactivated, the material is charged into the lid plate 17. And it is adapted to detect a separation from 4a.

Each limit switch 33a, 33b, switch actuating piece 35 and the like constitute position detecting means 40 for detecting the movement of the cover plate 17 to the closed position and the movement to the open position. The limit switch 37, the switch actuating piece 39 and the like constitute a pressure detection means 41 that detects the pressure and separation of the cover plate 17 against the material input port 4a. When the movement of the cover plate 17 to the closed position is detected by the position detection means 40, the cover plate pressing means 19 presses the cover plate 17 against the material input port 4a, and the pressure detection means 41. When the separation of the cover plate 17 from the material input port 4a is detected, the cover plate moving means 18 moves the cover plate 17 to the open position.
Note that an elastic plate-like scraper 43 is fixed to the support plate 42 fixed to the front end of the cover plate support frame 21 with a bolt 44a via a press plate 44, and the cover plate 17 moves back and forth. When cleaning, the surface of the flange 4g at the upper end of the material charging port 4a is wiped cleanly. Further, the central portion of the upper surface of the lid plate 17 is supported by the lateral member 21c of the lid plate support frame 21 via a coupling metal 45 so as to be relatively rotatable in a vertical plane.

Next, the operation of the liquid mixture storage silo 1 having the above-described configuration will be described based on the case where the liquid mixture storage silo 1 is applied to the sulfur solidified product manufacturing plant 50 shown in FIG.
First, the said sulfur solidified material manufacturing plant 50 is demonstrated. As shown in FIG. 8, this sulfur solidified product manufacturing plant 50 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. 51, an aggregate (powder-like aggregate) such as steelmaking slag and silica sand dried and heated by an aggregate heating supply device 52 such as a dryer and conveyed by a bucket elevator 53, and a high temperature supplied from the kneaded material supply device 51 And a metering and mixing device 54 for metering and mixing the liquid kneaded material.

  The weighing and mixing device 54 receives and stores the aggregate transported by the bucket elevator 53 in a hot bottle 55, and puts the aggregate into the powder weighing tank 56 in a timely manner and measures the mass with the load cell 56a. The gate 57a is opened and charged into the biaxial paddle type mixer 57. Then, the liquid kneaded material supplied from the kneaded material supply device 51 through the pipe p1 is received in the liquid measuring tank 58, weighed by the load cell 58a, and sent to the mixer 57 via the pipe p2 by the pump 58b. The spray tube 57b provided at the tip is sprayed on the aggregate inside the mixer 57, and the mixer 57 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 60a of the skip conveyor 60 via the hopper 59 and conveyed upward to the sulfur solidified product forming device 61. Supplied. In the sulfur solidified product forming apparatus 61, the liquid mixture supplied from the skip conveyor 60 is stored in the receiving hopper 4 of the liquid mixture storage silo 1, and dropped into the measuring hopper 6 at an appropriate time to be loaded into the load cell 8. And is placed in the mold 62 after being measured. The liquid mixture placed in the mold 62 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 51, the mixer 57, and the liquid metering tank 58, an inert gas such as nitrogen gas is predetermined from the gas tank 63a of the inert gas supply source 63 through the pipe p3 by the compressor 63b. The liquid contained in each of the devices 51, 57, 58 is cut off from the air by being supplied with pressure.
The mixer 57, the liquid metering tank 58, the pump 58b, and the pipes p1 and p2 are circulated and supplied with hot oil by the pipes 64a and 64b from the hot oil heater 64 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 51 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 action of the liquid mixture storage silo 1 according to the embodiment when used in the sulfur solidified product production plant 50 will be specifically described. The sulfur solidified material production plant 50 is operated, and the aggregate 57 and the liquid kneaded material are mixed by the mixer 57 to generate a high temperature (130 to 150 ° C.) slurry state liquid mixture, and the liquid mixture is used as the skip conveyor. When the liquid mixture storage silo 1 is conveyed by 60, the conveyance is detected and the rod 31a of the air cylinder 31 of the lid plate pressing means 19 is extended, so that the lid plate guide frame 20 is supported by the support shaft. 23, the front end side is raised with the fulcrum 23 as a fulcrum, and the lid plate 17 that has closed the material charging port 4a of the receiving hopper 4 is separated upward from the upper end flange 4g. When this separation of the cover plate 17 is detected by the separation of the switch operating piece 39 that rises together with the cover plate guide frame 20 from the limit switch 37, the rod 28a of the air cylinder 28 of the drive means 22 contracts, The lid plate 17 is moved through the lid plate support frame 21 to an open position where the material input port 4a is completely opened as shown by a chain line in FIG. The open / close gates 5 and 7 of the material outlet 4b of the receiving hopper 4 and the liquid outlet 6b of the measuring hopper 6 are closed in advance.

  When the movement of the cover plate 17 to the open position is detected by a limit switch 33b on the rear side operated via the switch operating piece 35, the liquid mixture is transferred from the bucket 60a of the skip conveyor 60 to the material input port 4. Through the receiving hopper 4. When a predetermined amount of the liquid mixture is introduced into the receiving hopper 4, the rod 28a of the air cylinder 28 is extended, and the lid plate 17 is moved through the lid plate support frame 21 as shown by a solid line in FIG. Since it is moved to the closed position that extends above the material charging port 4a, the movement to the closed position is detected by the front limit switch 33a being operated by the switch operating piece 35. By this detection, the rod 31a of the air cylinder 31 is contracted, and the cover plate 17 closes the material input port 4a and presses against the upper end flange 4g via the cover plate guide frame 20 and the cover plate support frame 21. Is done. As a result, the air cylinder 31 is maintained in the contracted state of the rod 31a and stored in a state where the high-temperature liquid mixture is sealed in the receiving hopper 4.

The liquid mixture stored in the receiving hopper 4 is heated to 130 to 150 ° C. by an electric heater provided on the outer periphery of the receiving hopper 4, and a slight vibration is given to the receiving hopper 4 by the vibration motor 15. The aggregate component separates from the liquid component and is stored in a state in which the fluid state is properly maintained and the stable property is maintained without being precipitated and adhering to the bottom 6d.
Therefore, when the liquid mixture in the receiving hopper 4 is cast in the mold 62 of the sulfur solidified material molding device 61, the rod 13a of the air cylinder 13 of the open / close gate 5 is contracted and the gate. 5c opens the flow path 5b, and the material outlet 4b communicates with the material receiving port 6a of the weighing hopper 6 via the chute 9, so that the liquid mixture in the receiving hopper 4 passes through the chute 9 and the weighing hopper 6 It flows down into the inside (see FIGS. 6 and 7). Since the liquid mixture charged into the weighing hopper 4 is weighed by the load cell 8 provided between the support leg 6f of the weighing hopper 6 and the lower horizontal beam 2b of the gantry 2, the measured value becomes a predetermined amount. When it reaches, the air cylinder 13 of the open / close gate 7 of the weighing hopper 6 is actuated to open the flow path in the open / close gate 7, and a predetermined amount of liquid mixture is discharged from the chute 14 communicated with the material discharge port 6b. Then, it is placed in the mold 62.

When placing the liquid mixture into the weighing hopper 6 when the mold 62 is placed, if the remaining amount of the liquid mixture in the receiving hopper 4 is reduced, the lid plate 17 is opened in a timely manner. The liquid mixture is supplied into the receiving hopper 4. In this case, the receiving hopper 4 may vibrate as the liquid mixture is introduced, but the material outlet 4b of the receiving hopper 4 and the material receiving port 6a of the weighing hopper 6 are connected by a chute 9 via the bellows 10. Therefore, even when the liquid mixture is being weighed by the weighing hopper 6, the vibration of the receiving hopper 4 is not transmitted to the weighing hopper 6, and the weighing can be performed without any trouble. Since the mass of 4 does not enter the load cell 8 via the weighing hopper 6, the weighing can be performed accurately.
Further, when the liquid mixture is discharged from the weighing hopper 6, the vibration motor 15 attached to the bottom 6d is operated to facilitate the liquid mixture to be smoothly discharged without adhering and staying in the bottom 6d. The Moreover, since the outer periphery of the weighing hopper 6 is heated by the electric heater, it is possible to prevent the liquid mixture from radiating heat and lowering the temperature during weighing.

  As described above, the liquid mixture storage silo 1 according to the embodiment is supported by the gantry 2 and the horizontal beam 2 a of the gantry 2, and has the material input port 4 a that is opened and closed by the opening / closing lid device 3 at the top. The receiving hopper 4 having a material outlet 4b opened and closed by the opening and closing gate 5 at the lower end and capable of being sealed, and provided below the receiving hopper 4 and connected to the material outlet 4b of the receiving hopper 4 at the upper end. A weighing hopper 6 having a material receiving port 6a and having a material discharge port 6b opened and closed by an open / close gate 7 at the lower end and capable of being sealed, and the weighing hopper 6 has a plurality of supports provided around it. Legs 6f are provided on the frame 2 via the load cell 8 so as to be supported by the horizontal beam 2b. The material receiving port 6a is connected to the material outlet 4b of the receiving hopper 4 by the chute 9 and the cylindrical bellows 10. Airtight and relative movement Is connected to the ability also electric heater is configured to provided on the outer periphery of the weighing hopper 6 and the receiving hopper 4.

  Therefore, according to the liquid mixture storage silo 1 according to the embodiment, the material charging port 4a of the receiving hopper 4 opens and closes the liquid mixture charged into the receiving hopper 4 whose material outlet 4b is closed by the open / close gate 5. Since it can be heated to a predetermined temperature by the electric heater on the outer periphery of the receiving hopper 4 while being sealed by the lid device 3, the temperature of the high-temperature liquid mixture is reliably prevented from being lowered and stable over a long period of time. It can be stored while maintaining its properties. In addition, by feeding the liquid mixture in the receiving hopper 4 into the weighing hopper 6 and measuring the charged amount with the load cell 8 of the weighing hopper 6, a predetermined amount of the liquid mixture is supplied to the solidified molding apparatus when necessary. This makes it possible to efficiently produce a solidified molded product from the liquid mixture.

  Further, according to the liquid mixture storage silo 1 according to the embodiment, the opening / closing lid device 3 of the receiving hopper 4 includes the lid plate 17 and the lid plate 17 between the closed position and the open position of the material charging port 4a. A lid plate moving means 18 for guiding and moving between them, and a lid plate for pressing the lid plate 17 against the material input port 4a at the closed position and releasing the pressure from the material input port 4a Since the pressing means 19 is provided, when the material charging port 4 a of the receiving hopper 4 is closed by the lid plate 17, the lid plate 17 is pressed against the material charging port 4 a by the lid plate pressing means 19. Since the material inlet 4a is hermetically closed, it is possible to suppress the heat of the liquid mixture from being dissipated to the outside as much as possible through the material inlet 4a, and to open the lid when the material inlet 4a is opened. The cover plate 1 is pressed by the plate pressing means 19. Since but is separated from the material inlet 4a, can be moved to the open position of the lid plate 17 by cover plate moving means 18 smoothly.

  Further, according to the liquid mixture storage silo 1 according to the embodiment, the opening / closing lid device 3 has limit switches 30a, 30b for detecting the movement of the lid plate 17 to the closed position and the movement to the open position, and Position detecting means 40 comprising a switch operating piece 35 and the like, and a pressure detecting means 41 comprising a limit switch 37 and a switch operating piece 39 for detecting the press and separation of the cover plate 17 with respect to the material input port 4a, are provided. When the movement of the cover plate 17 to the closed position is detected by the position detection means 40, the cover plate pressing means 19 presses the cover plate 17 against the material input port 4 a, and the cover by the pressure detection means 41. When the separation of the plate 17 from the material input port 4a is detected, the lid plate moving means 18 is configured to move the lid plate 17 to the open position. By detecting the movement position of the lid plate 17 by the pressure detection means 41, the linkage operation of the lid plate moving means 18 and the lid plate pressing means 19 can be accurately performed without error. The opening / closing and sealing operation of 4a can be performed smoothly and reliably.

  Further, according to the liquid mixture storage silo 1 according to the embodiment, the vibration motor 15 is attached to each of the bottom portions 4d and 6d of the receiving hopper 4 and the weighing hopper 6, so that the vibration motor is timely used. 15, by applying vibration to the receiving hopper 4 and the weighing hopper 6, the liquid mixture adheres to the inner wall surfaces of the trunk portions 4c, 6c and the bottom portions 4d, 6d of the receiving hopper 4 and the weighing hopper 6, or the bottom portion 4d, It is possible to reliably prevent the aggregate from being separated from the liquid, precipitated and deposited on the inner wall surface of 6d.

In the liquid mixture storage silo 1 according to the above embodiment, when a stirring blade is appropriately provided in the receiving hopper 4 and rotated at regular intervals or at appropriate time intervals, the liquid mixture stored in the interior is stored. Separation of the powdery aggregate from the can be more reliably prevented.
Further, although an example in which an electric heater is used as a heating means for heating the outer peripheries of the receiving hopper 4 and the weighing hopper 6 has been shown, the present invention is not limited thereto, and an oil jacket is provided on the outer peripheries of the receiving hopper 4 and the measuring hopper 6. May be used, and hot oil (130 to 150 ° C.) may be circulated therethrough. Further, although the vibration motor 15 is employed as the vibration generating means for the receiving hopper 4 and the weighing hopper 6, the present invention is not limited thereto, and other appropriate vibration devices may be employed.
Further, in the receiving hopper 4, a mixture of molten sulfur and powdered aggregate such as coal ash is stored as a high-temperature liquid mixture. However, the present invention is not limited to this, and a synthetic resin in a molten state is stored. It is also possible to store a product obtained by mixing the powdered aggregate with the above.

It is a front view which shows the liquid mixture preservation silo which concerns on one embodiment of this invention. FIG. FIG. 3 is a view taken in the direction of arrow B in FIG. 2. FIG. 3 is a cross-sectional view of FIG. FIG. 3 is a view taken in the direction of the arrow 2 in FIG. 2. It is an enlarged view of the A section of FIG. It is sectional drawing of an open / close gate. It is a systematic diagram showing an example of a solidified sulfur production plant to which a liquid mixture storage silo according to an embodiment of the present invention is applied.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Liquid mixture preservation silo 2 Base 3 Opening / closing lid apparatus 4 Receiving hopper 4a Material b insertion port 5,7 Opening / closing gate 6 Weighing hopper 6a Material receiving port 8 Load cell 9,14 Chute 10 Bellows (flexible cylindrical member)
15 Vibration motor (vibration generating means)
16 Heat insulating material 17 Cover plate 18 Cover plate moving means 19 Cover plate pressing means 20 Cover plate guide frame 21 Cover plate support frame 22 Drive means 23 Support shaft 24 Bracket 26 Roller 27 Support tool 27b Support rod 28, 31 Air cylinder 33a, 33b , 37 Limit switch 35, 39 Switch operating piece 40 Position detection means 41 Press detection means

Claims (4)

A gantry, a receiving hopper that is supported by the gantry, has a material inlet that is opened and closed by an opening / closing lid device at an upper portion, and has a material outlet that is opened and closed by an opening / closing gate at a lower end; A measuring hopper provided below the receiving hopper, having a material receiving port connected to the material outlet of the receiving hopper at the upper end and having a material discharging port opened and closed by an open / close gate at the lower end and capable of being sealed A liquid mixture storage silo,
The weighing hopper is provided with a plurality of support legs provided around the weighing hopper supported by the gantry via a load cell, and the material receiving port of the receiving hopper by a flexible cylindrical member. A liquid mixture storage silo characterized in that it is connected in an airtight and relatively movable manner, and heating means are provided on the outer circumferences of the receiving hopper and the weighing hopper.   The open / close lid device of the receiving hopper includes a lid plate, lid plate moving means for guiding and moving the lid plate between a closed position and an open position of the material input port, and the lid plate at the closed position. 2. The liquid mixture storage silo according to claim 1, further comprising a cover plate pressing unit that presses against the material charging port and releases the pressure to separate the material from the material charging port.   The opening / closing lid device is provided with position detection means for detecting movement of the lid plate to the closed position and movement to the open position, and pressure detection means for detecting pressure and separation of the lid plate against the material inlet. When the movement of the cover plate to the closed position is detected by the position detection means, the cover plate pressing means presses the cover plate against the material input port, and the cover plate material input port by the pressure detection means 3. The liquid mixture storage silo according to claim 2, wherein when the separation from is detected, the cover plate moving means moves the cover plate to an open position. The liquid mixture storage silo according to any one of claims 1 to 3, wherein vibration generating means is attached to each bottom of the receiving hopper and the weighing hopper.

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