JP2011001245A - Equipment for producing salt molded article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide equipment for producing a salt molded article, in which a salt molten in a crucible can be smoothly supplied to a mold even when the crucible is formed into a simple vessel shape without carrying out a process that increases the production cost.SOLUTION: The equipment 1 for producing a salt molded article includes a melting furnace 10 and a supply passage 20 that guides a molten salt to a lower part of the melting furnace 10, wherein the melting furnace 10 includes a vessel-like crucible 100 shaped to be able to reserve salt and a heater 101 for heating salt in the crucible 100. The supply passage 20 includes a pipe-like immersion supply passage 200 disposed in the crucible as extending in a vertical direction, and a pipe-like external supply passage 201 configured to be fluidically connected to the upper end of the immersion supply passage 200 and to be extended downward outside the crucible 100 and directly or indirectly supplying the molten salt to a mold 300 disposed below the melting furnace 10. The external supply passage 201 is configured to be directly or indirectly connected to a suction device 50 for sucking inner air.

Description

  The present invention relates to a salt molded product manufacturing facility for melting a solid (granular or powdered) salt and manufacturing a salt molded product from the molten salt (molten salt).

  Recently, as salt has a useful effect, as shown in FIG. 4, a large number of salt tiles T are laid on the entire ceiling surface R, wall surface W, and floor surface F, and the indoor temperature is the body temperature of the human body (general Salt room in which the indoor humidity is set to a predetermined humidity (for example, 45%) lower than that of a general sauna. SR is provided.

  As described above, the salt room SR has a room temperature set slightly higher than the body temperature, and the room humidity is set to low humidity. Compared to saunas, salt saunas with ceilings, walls, and floors that are covered with natural rock salt, etc., and indoors are set to be hot and humid, the burden on the user's body is small and the effect of salt It is said that you can make the best use of.

  As a result, the salt room SR is attracting attention in a wide range of fields such as the beauty field and the medical field as improving the metabolism, immunity, and natural healing power of the user.

  In the salt room SR, a light source (not shown) (for example, RGB LEDs) is disposed on the back side of the salt tile T (the surface opposite to the surface facing the indoor side). In addition to the light source, there is an acoustic means for providing various sounds and music in addition to a light source that is configured to make the room a fantastic space by being transmitted through the tile T and illuminating the room. In addition to the above effects, these salt rooms SR are configured to make the room a more fantastic space by combining the light from the light source and the sound and music from the acoustic means. It is said that users can relax and relieve stress by directing sound.

  By the way, although the salt tile T can be produced by cutting out from natural rock salt, the salt tile T employed in the salt room SR is a powdery or granular salt from the viewpoint of production efficiency and light transmittance. It is produced by pouring a molten material into a mold and cooling it (for example, see Patent Document 1). Here, the salt molded product manufacturing facility used for manufacturing the salt tile T will be described. The salt molded product manufacturing facility includes a melting furnace for melting salt, a mold placed below the melting furnace, and a melting mold. A salt supply unit for supplying the salt (molten salt) melted in the furnace to the mold formed in the mold, and a supply path for guiding the molten salt from the melting furnace to the salt supply unit are provided.

  The melting furnace includes, for example, a crucible configured to store powdered or granular salt and a heater for heating the salt in the crucible. The melting furnace has a discharge port formed in the lower part of the crucible, and is configured to discharge the molten salt from the discharge port after melting the salt stored in the crucible by heating of the heater.

  The said shaping | molding die is comprised with the metal material and the predetermined type | mold (the hollow corresponding to the form of a salt molding product) is recessedly provided by the upper surface. Thereby, the mold formed in the molding die forms an opening opened upward, and the molten salt S is filled (supplied) from the opening.

  The salt supply part is disposed above the mold (mold), and a salt supply hole is formed at a position corresponding to the layout of the mold below to discharge the molten salt.

  The supply path is formed in a pipe shape or a bowl shape, and is disposed between the discharge port of the melting furnace and the salt supply unit. Thereby, the supply path guides the molten salt discharged from the discharge port of the melting furnace to the salt supply unit.

  The manufacturing equipment having the above configuration supplies the molten salt to the mold of the mold by allowing the salt supplied from the melting furnace to the salt supply unit to flow out from the salt supply hole of the salt supply unit via the supply path. ing. A salt molded product (salt tile) is produced by naturally cooling and solidifying the molten salt in the mold of the mold.

JP 2007-92514 A

  By the way, the manufacturing equipment having the above-described configuration forms a discharge port in the lower part of the melting furnace (crucible) and discharges the molten salt from the discharge port. It is necessary to store salt. For this reason, an opening / closing means for opening / closing the discharge port is provided at the discharge port of the melting furnace, but there is a problem that a failure rate is increased in a general valve device. That is, with the passage of the molten salt, the molten salt adheres to the inner peripheral surface that defines the passage formed in the valve device. Therefore, after the molten salt passes (the supply of the molten salt to the mold is completed). Later, there is a problem that the molten salt in the valve device is naturally cooled and solidified (crystallized), thereby obstructing the opening and closing of the valve device.

  Moreover, since the manufacturing object of the said structure is a salt with high melting | fusing point, the crucible is formed with the material (for example, inorganic substance) excellent in heat resistance. Therefore, when manufacturing a crucible, first, a container is manufactured with a molding material (inorganic), and then a through hole is formed as a discharge port or a valve device is attached to the container. It is processed into a possible form. For this reason, the crucible having the above-described configuration has a problem that the production is complicated and the production cost is increased.

  Accordingly, the present invention provides a facility for manufacturing a salt molded product that can smoothly supply the molten salt in the crucible to the mold even if the crucible is formed in a simple vessel shape without performing processing that causes an increase in production cost. It is an issue to provide.

  A salt molded product manufacturing facility according to the present invention includes a melting furnace for melting salt, and a supply path for guiding the molten salt below the melting furnace, and a supply path for a mold disposed below the melting furnace. In the salt molded product manufacturing facility configured to manufacture a salt molded product by cooling and solidifying the molten salt supplied directly or indirectly through the melting furnace, the melting furnace is configured to be able to store salt. A vessel-shaped crucible and a heater for heating the salt in the crucible, and the supply path includes a pipe-shaped immersion supply path disposed in the crucible so as to extend in the vertical direction, and the immersion supply path A pipe-like structure that is fluidly connected to the upper end and extends downwardly outside the crucible so that molten salt can be supplied directly or indirectly to a mold disposed below the melting furnace. An external supply path, and the external supply path is a suction device for sucking air inside Characterized in that it is configured to be directly or indirectly connected.

  According to the salt molded product manufacturing equipment having the above-described configuration, when the melting furnace melts the salt in the crucible by the heating of the heater, the molten salt is stored in the vessel-shaped crucible. Then, when the salt in the crucible is completely or substantially completely melted and the air inside the external supply path is sucked with a suction device connected to the external supply path, the inside of the external supply path becomes negative pressure, The molten salt in the crucible is sucked up from the lower end opening of the immersion supply path fluidly connected to the external supply path. The sucked molten salt reaches the external supply path through the immersion supply path, and the leading position of the molten salt reaches below the liquid level of the molten salt in the crucible (more preferably, the lower part of the crucible). Then, even if the suction by the suction device is stopped, a so-called siphon phenomenon occurs in which the molten salt in the external supply path flows downward due to the hydraulic head pressure. As a result, the salt molded product manufacturing facility allows the molten salt in the melting furnace (the crucible) to flow downward while filling the supply path, and the molten salt with respect to the mold disposed below the melting furnace. Will be supplied directly or indirectly. As described above, according to the salt molded product manufacturing facility having the above configuration, the molten salt is discharged using the siphon phenomenon, so that the crucible is formed in a simple vessel shape without performing processing that causes an increase in manufacturing cost. Even so, the salt melted in the crucible can be smoothly supplied to the mold.

  As one aspect of the present invention, a salt supply unit is provided above the mold, and the salt supply unit is formed with a salt supply hole for allowing the molten salt to flow out and supplying the molten salt into the mold. The external supply path is arranged to be able to supply molten salt from the lower end opening to the salt supply unit, and is configured to be able to connect a suction device directly or indirectly to a midway position, and opens and closes the lower end opening. It is preferable that an opening / closing means is provided. In this way, by performing suction with a suction device with the opening and closing means closing the lower end opening of the external supply path, the supply path can be made negative pressure efficiently, so the molten salt in the crucible is externally supplied. It can lead smoothly to the road. Then, after the siphon phenomenon occurs, the suction by the suction device is stopped, and if the lower end opening is closed by opening and closing means and the lower end opening is opened, the molten salt does not adhere to the opening and closing means. Molten salt flows out from the lower end opening toward the salt supply section. The molten salt supplied to the salt supply unit flows out of the salt supply hole and is supplied to the mold.

  As described above, according to the present invention, the salt melted in the crucible can be smoothly supplied to the mold even if the crucible is formed into a simple vessel shape without performing processing that causes an increase in production cost. Such an excellent effect can be achieved.

The schematic side view of the salt molded product manufacturing equipment concerning one embodiment of the present invention is shown. It is explanatory drawing for demonstrating the action | operation of the salt molded product manufacturing equipment which concerns on the embodiment, Comprising: (a) shows the state which is attracting | sucking the air in an external supply path with a suction device, (b) is The state which supplies molten salt to a shaping | molding die by a siphon phenomenon is shown. The general | schematic fragmentary front sectional drawing of the salt shaping equipment which concerns on other embodiment of this invention is shown. The partial perspective view of the salt room which spread the salt tile on the ceiling surface, the wall surface, and the floor surface is shown.

  Hereinafter, a salt forming facility (hereinafter simply referred to as a manufacturing facility) according to an embodiment of the present invention will be described with reference to the accompanying drawings.

  As shown in FIG. 1, the manufacturing facility includes a melting furnace 10 for melting salt, and a supply path 20 that guides the molten salt S below the melting furnace 10. More specifically, the manufacturing facility 1 according to the present embodiment includes a melting furnace 10 for melting the salt, a supply path 20 for guiding the molten salt S below the melting furnace 10, and a position below the melting furnace 10. The mold 30 is formed with a concave mold 300 that is open at the top, and the salt supply unit 40 for supplying the molten salt S supplied from the supply passage 20 to the mold 300 of the mold 30. Yes. In addition to the above configuration, the manufacturing facility 1 according to the present embodiment includes a conveyor (not shown) that conveys the mold 30.

  The melting furnace 10 according to this embodiment is a so-called batch-type melting furnace that melts solid (powdered or granular in this embodiment) in a stored state, and stores powdered or granular salt. A vessel-shaped crucible 100 that can be configured and a heater 101 for heating the salt in the crucible 100 are provided. The crucible 100 is formed in a container shape with an upper portion made of a material having a melting point higher than that of salt. The heater 101 is disposed at least one of the inside of the crucible 100 and the outside of the crucible 100. In the melting furnace 10 according to this embodiment, a plurality of heaters 101 are arranged at intervals with respect to the periphery of the body of the crucible 100. Accordingly, the melting furnace 10 is configured to heat and melt the salt stored in the crucible 100 by the heater 101. In the melting furnace 10 according to this embodiment, the crucible 100 and the plurality of heaters 101 are surrounded by a refractory material (for example, cement or brick) having excellent heat resistance. As a result, the melting furnace 10 is insulated from the surroundings due to the presence of the refractory material M.

  The supply path 20 is configured by a U-shaped or U-shaped bent tube having one end extending in the vertical direction inside the crucible 100 and the other end extending in the vertical direction outside the crucible 100. Specifically, the supply path 20 is fluidly connected to the pipe-shaped immersion supply path 200 disposed in the crucible 100 so as to extend in the vertical direction, and the upper end of the immersion supply path 200. And a pipe-shaped external supply path 201 configured to be able to supply the molten salt S directly or indirectly to the mold 300 disposed below the melting furnace and extending downward. .

  Since the external supply path 201 is formed so as to extend in the vertical direction outside the crucible 100 (melting furnace 10) as described above, the supply path 20 according to this embodiment is the upper end portion of the immersion supply path 200. And the upper end of the external supply path 201 are indirectly connected via a pipe-shaped connection supply path 202 extending in the lateral direction.

  Thereby, as for the supply path 20 which concerns on this embodiment, the external supply path 201 is fluidly connected via the connection supply path 202 with respect to the immersion supply path 200. FIG. That is, in the supply path 20, the inside of the immersion supply path 200, the external supply path 201, and the connection supply path 202 is continuous, and the melting furnace 10 is in the order of the immersion supply path 200, the connection supply path 202, and the external supply path 201. The molten salt S in the (crucible 100) can be circulated.

  In the present embodiment, as described above, since the salt supply unit 40 is provided, the external supply path 201 can supply the molten salt S from the lower end opening to the salt supply unit 40 (a molten salt receiving unit 401 described later). Has been placed. And the lower end of the external supply path 201 is at a position lower than the liquid surface of the molten salt S in the melting furnace 10 (the crucible 100), and in this embodiment, at a position lower than the melting furnace 10 (the crucible 100). Has been placed.

  The external supply path 201 is configured such that a suction device 50 for sucking internal air can be connected directly or indirectly. The external supply path 201 according to the present embodiment is configured so that the suction device 50 can be directly or indirectly connected to a midway position in the vertical direction. That is, the external supply path 201 is connected to a branch path 203 branched in a direction intersecting or perpendicular to an axis extending in the vertical direction at an intermediate position in the vertical direction, and the suction device 50 is connected to the branch path 203. Connected.

  The branch path 203 is branched at a position lower than the liquid surface of the molten salt S in the melting furnace 10 (the crucible 100). In the present embodiment, the external supply path is positioned at a position lower than the melting furnace 10 (the crucible 100). Branches from 201. The branch path 203 according to the present embodiment has a downstream (tip) side extending to a position above the liquid surface of the molten salt S in the crucible 100 with respect to the portion branched from the external supply path 201, and branches at the tip. The suction device 50 is connected to the branched portion 204.

  Further, as the suction device 50 is connected to the external supply path 201, the manufacturing facility 1 opens and closes the lower end opening of the external supply path 201 and the front end opening of the branch path 203. 60a, 60b. Each of the opening / closing means 60 a and 60 b includes a shaft 61 and a valve plate 62 that can rotate around the shaft 61. As a result, the opening / closing means 60a for opening and closing the lower end opening of the external supply path 201 rotates the valve plate 62 around the shaft 61 so that the valve plate 62 contacts the lower end of the external supply path 201 and the lower end. A state in which the opening is closed and a state in which the valve plate 62 is separated from the lower end of the external supply path 201 and the lower end opening is opened are switched. The opening / closing means 60b for opening and closing the tip opening of the branch passage 203 rotates the valve plate 62 around the shaft 61 so that the valve plate 62 contacts the tip of the branch passage 203 and closes the tip opening. And a state in which the valve plate 62 is separated from the lower end of the distal end of the branch path 203 and opens the opening of the distal end.

  The opening / closing means 60a, 60b according to the present embodiment includes a driving means 63 for rotating the valve plate 62. In the present embodiment, an air cylinder is employed as the driving means 63, and the valve plate 62 is rotated by expansion and contraction of the rod of the air cylinder.

  The mold 30 is formed of a metal material, is formed in a plate shape, and is set to a thickness thicker than the depth of the mold 300 so that the mold 300 can be formed in a non-penetrating state. . A plurality of the molds 300 are formed in the mold 30 according to the present embodiment. Specifically, the mold 30 is formed in a rectangular shape in plan view, and a plurality of molds 300 are formed on the upper surface thereof so as to form a line in the longitudinal direction of the mold 30.

  The manufacturing facility 1 according to the present embodiment is a salt tile T as a salt molded product employed in the salt room SR (see FIG. 4) described in the background art, or a salt molded product used in the salt room SR. For producing a salt pillow (not shown), a salt footrest (not shown), etc., for example, when producing a salt tile (salt molded product) T having a substantially hexagonal shape when viewed from the front, Each mold 300 of the mold 30 is formed in a substantially hexagonal shape in plan view corresponding to the front shape of the salt tile T.

  The salt supply unit 40 connects the box-shaped supply unit main body 400, the molten salt receiver 401 that receives the molten salt S from the external supply path 201, and the supply unit main body 400 and the molten salt receiver 401 to melt An introduction path 402 that guides the molten salt S from the salt receiving unit 401 to the supply unit main body 400 is provided.

  The supply unit main body 400 is formed in a rectangular parallelepiped shape, and a plurality of salt supply holes 403 for discharging the molten salt S are formed on the lower surface. In the present embodiment, since the plurality of molds 300 are formed in the mold 30, the salt supply holes 403 are formed at positions corresponding to the positions of the plurality of molds 300 in the mold 30. In the present embodiment, as described above, since the plurality of molds 300 are arranged in a row on the upper surface of the mold 30, the plurality of salt supply holes 403. It is formed so as to correspond to the arrangement of 30 molds 300. That is, each of the plurality of salt supply holes 403 is formed such that the interval between adjacent salt supply holes 403 is the same as the interval between the plurality of molds 300 of the mold 30.

  The molten salt receiving portion 401 is formed in a funnel shape and is arranged so that the internal space expands upward. That is, the molten salt receiver 401 is formed so that the inner diameter expands upward, and the upper end opening is arranged to face the lower end opening of the external supply path 201.

  The introduction path 402 is formed in a pipe shape, and one end thereof is connected to the outer surface of the supply section main body 400 so that the inside thereof communicates the inside of the supply section main body 400 and the inside of the molten salt receiving section 401. The other end is connected to the molten salt receiver 401. Since the introduction path 402 according to the present embodiment has one end connected to the side wall of the supply unit main body 400, the introduction path 402 is formed in an L shape so that the other end faces upward, and the other end is the lower end of the molten salt receiving unit 401. Connected to the department.

  The said conveyor is arrange | positioned under the melting furnace 10 and the salt supply part 40, and orthogonally crosses the row | line | column direction (longitudinal direction of the shaping | molding die 30) in which the some shaping | molding die 30 arrange | positions the several shaping | molding die 300 ... of each shaping | molding die 30. It is designed to be transported one after another in the direction of movement.

  The manufacturing facility 1 according to the present embodiment has the above-described configuration. Next, the operation of the manufacturing facility 1 will be described.

  First, as shown in FIG. 1, salt is supplied into the crucible 100, and then the inside of the crucible 100 is heated by the heater 101 to melt the salt. When all of the salt in the crucible 100 is melted, the conveyor is driven and waits in a state where the molten salt S can be supplied to the mold 300 of the mold 30.

  In this state, the molten salt S is discharged from the melting furnace 10 (the crucible 100). Specifically, as shown in FIG. 2A, the air inside the external supply path 201 is sucked by the suction device 50 connected to the external supply path 201, and the external supply path 201 is made negative pressure. In the present embodiment, since the opening / closing means 60a, 60b are provided, as described above, when the air in the external supply path 201 is sucked by the suction device 50, the opening / closing means 60a, 60b (valve plate 62) is the external supply path. By closing the lower end opening of 201 and the front end opening of the branch passage 203, air from the outside does not flow into the external supply passage 201, and the inside efficiently becomes negative pressure. Then, the molten salt S in the crucible 100 is sucked up from the lower end opening of the immersion supply path 201 that is fluidly connected to the external supply path 201.

  The sucked molten salt S reaches the external supply path 201 through the immersion supply path 200, and the leading position of the molten salt S is the molten salt S in the crucible 100 (the liquid of the molten salt S in the crucible 100). When the pressure reaches below the surface, a so-called siphon phenomenon occurs in which the molten salt S in the external supply channel 201 flows by itself due to the hydraulic head pressure even if the suction by the suction device 50 is stopped. As a result, the molten salt S in the melting furnace 10 (the crucible 100) flows downward while filling the supply path 20. In addition, since the front-end | tip part (branch part 204) of the branch path 203 exists in the manufacturing equipment 1 which concerns on this embodiment above the liquid level of the molten salt S in the crucible 100, molten salt S distribute | circulated by a siphon phenomenon. Even if the water flows into the branch passage 203, the molten salt S does not flow before the branch portion 204 due to the hydraulic head pressure, and the molten salt S blows out from the front end opening of the branch passage 203 or is a suction device. It does not flow into 50.

  In the manufacturing facility 1 according to the present embodiment, a detection sensor SE that detects the top of the molten salt S is provided in the vicinity of the branch path 203 in the external supply path 201, and the detection sensor SE detects the top of the molten salt S. Assuming that the siphon phenomenon has occurred, as shown in FIG. 2 (b), the suction in the external supply path 201 is stopped and the closing of the opening by the opening / closing means 60a and 60b is released. That is, the manufacturing facility 1 according to the present embodiment stops the driving (suction) of the suction device 50 based on the detection result of the detection sensor SE and drives the driving means (air cylinder) 63 to externally connect the valve plate 62. The closing of the lower end opening of the supply path 201 and the front end opening of the branch path 203 is released, and these openings are opened.

  Then, since the valve plate 62 is separated from the lower end of the external supply path 201 by the time the molten salt S reaches the lower end opening of the external supply path 201, the molten salt that flows downward by the siphon phenomenon S flows out from the lower end opening of the external supply path 201 and flows into the salt supply unit 40 without adhering to the opening / closing means 60a, 60b (valve plate 62). Then, the molten salt S supplied to the salt supply unit 40 flows out from the salt supply hole 403 and is supplied to the mold 300.

  When the molten salt S is supplied into the molding die 30 (mold 300...), The molten salt S in the mold 300... Is cured (solidified) by natural cooling to form a salt molded product (salt tile T). become.

  When the mold 30 conveyed by the conveyor is tilted in accordance with the change of the moving direction, the salt molded product (salt tile T) solidified in the mold 300 falls into a container such as a container. Will be collected. In the subsequent mold 30 as well, the salt molded product T is molded from the molten salt S and is sequentially collected in a container such as a container. Although not specifically mentioned, when the molten salt S in the melting furnace 10 is exhausted, when the detection sensor SE detects the end of the molten salt S in the external supply path 201, the opening / closing means 60a, 60b closes each opening in preparation for the next salt melting operation.

  As described above, in the manufacturing facility 1 according to the present embodiment, the melting furnace 10 includes the vessel-shaped crucible 100 formed so that salt can be stored, and the heater 101 for heating the salt in the crucible 100. The supply path 20 is fluidly connected to a pipe-shaped immersion supply path 200 disposed in the crucible 100 so as to extend in the vertical direction, and to the upper end of the immersion supply path 200. And a pipe-shaped external supply path 201 configured to be able to indirectly supply the molten salt S to the mold 300 disposed below the melting furnace 10 and extending downward. Since the suction device 50 for sucking the internal air is configured to be indirectly connectable, the molten salt S in the crucible 100 can be discharged by a siphon phenomenon. Therefore, the manufacturing facility 1 according to the present embodiment smoothly transfers the salt S melted in the crucible 100 to the mold 30 even if the crucible 100 is formed into a simple vessel shape without performing processing that causes an increase in manufacturing cost. Can be supplied.

  Moreover, the manufacturing facility 1 according to the present embodiment includes a salt supply unit 40 disposed above the mold 300, and the salt supply unit 40 causes the molten salt S to flow out in the lower portion and the molten salt S to be placed in the mold. A salt supply hole 403 for supply is formed, and the external supply path 201 is arranged so as to be able to supply the molten salt S from the lower end opening to the salt supply unit 40, and the suction device 50 can be indirectly connected to the intermediate position. In addition, since the opening / closing means 60a for opening and closing the lower end opening is provided, the inside of the supply path 20 can be made negative pressure efficiently, and the molten salt S in the crucible 100 can be smoothly transferred to the external supply path 201. Can lead. Then, the suction by the suction device 50 is stopped after the siphon phenomenon occurs, and the opening of the lower end opening by the opening / closing means 60a is released and the lower end opening is opened, so that the molten salt S adheres to the opening / closing means 60. The molten salt S can be supplied to the salt supply unit 40 without causing it to occur.

  In addition, the manufacturing facility 1 according to the present embodiment switches the operation of the suction device 50 and the opening / closing means 60a and 60b (switching between ON and OFF) to the external supply path 201 based on the detection result of the detection sensor SE. In addition, it is possible to automatically stop the suction by the suction device 50 and release the blockage of the opening by the opening / closing means 60a and 60b.

  In addition, this invention is not limited to the said embodiment, In the range which does not deviate from the summary of this invention, it can change suitably.

  In the above embodiment, the mold 300 of the mold 30 is formed in a substantially hexagonal shape in plan view so as to form a salt tile T having a generally hexagonal shape in frontal view as a salt molded product, but is not limited thereto. What is necessary is just to form the shape in planar view of the type | mold 300 of the shaping | molding die 30 in the shape corresponding to the planar shape of a salt molded product.

  Moreover, the salt molded product molded by the manufacturing facility 1 is not limited to manufacturing (molding) the salt tile T. For example, other members for constructing the salt room SR or the salt room SR are used. The article to be used (for example, a salt pillow, a salt footrest, etc.) may be used.

  In the above embodiment, since the branch part 204 is provided at the tip of the branch path 203, the opening / closing means 60b for opening and closing the tip opening of the branch path 203 is provided. For example, the suction device 50 is directly connected to the tip of the branch path 203. If connected, it is not necessary to provide the opening / closing means 60b for the branch path 203. In the above embodiment, the opening / closing means 60a and 60b that operate based on the detection result of the detection sensor SE are provided. However, the present invention is not limited to this. For example, the opening / closing means 60a and 60b that operate manually are provided. Alternatively, for example, the opening may be closed with a detachable cap without providing a mechanical opening / closing means as in the above embodiment, and the cap may be manually removed when a siphon phenomenon occurs. However, since the molten salt S is very hot, it is a matter of course that a long handle is connected to the cap, and the cap is attached / detached via the handle, Needless to say, it is preferable to open and close the opening without human intervention as in the above embodiment.

  Further, in the above embodiment, the opening is closed when the suction device 50 performs suction. For example, the suction device 50 may suck the inside of the external supply path 201 with the opening opened. Good. However, in this case, since outside air flows from the opening, the inside cannot be made negative pressure efficiently. Therefore, in order to suck up the molten salt S efficiently and reliably, the opening / closing means as in the above embodiment. 60a and 60b are preferably provided.

  In the above embodiment, the opening / closing means 60a, 60b including the valve plate 61 rotatable around the shaft 60 is adopted. However, the opening / closing means 60a, 60b includes, for example, a gate disposed so as to cross the opening, It may be provided with a slide mechanism for sliding the gate.

  In the above-described embodiment, the immersion supply path 200 and the external supply path 201 are connected via the connection supply path 202. For example, the immersion supply path 200 is disposed obliquely (in an inclined posture), and the immersion supply path 200 is connected to the immersion supply path 200. The external supply path 201 may be directly connected. That is, the supply channel 20 may be formed as an inverted V-shaped channel.

  In the said embodiment, although the molten salt S which distribute | circulates the inside of the external supply path 201 via the salt supply part 40 was indirectly supplied to the shaping | molding die 30, it is not limited to this, For example, external The molten salt S may be directly supplied from the supply path 200 to the mold 30.

  Specifically, as shown in FIG. 3, the salt supply unit 40 in the above embodiment and the external supply channel 201 in the above embodiment are formed in a continuous flow path without being interrupted, and the salt supply unit 40 is supplied externally. It may be a part of the path 201. That is, the external supply path 201 is vertically connected to the vertical flow path 201a whose upper end is connected to the immersion supply path 200 and fluidly connected to the lower end of the vertical flow path 201a. 40, a supply channel 201b configured to be able to supply the molten salt S to the mold 30 and an extension channel 201c having one end fluidly connected to the tip of the supply channel 201b and extending upward. The suction device 50 may be connected to the extension path 201c.

  Even in this case, the suction device 50 can suck the air in the external supply passage 201 to make the external supply passage 201 negative pressure, causing a siphon phenomenon and the molten salt S in the crucible 100. Can be discharged. In this case, the extension path 201c is preferably as long as possible, and the other end of the extension path 201c is more preferably located above the molten salt S in the melting furnace 10 (the crucible 100). Further, when connecting the suction device 50 to the extension passage 201c, a three-way valve V is provided at the distal end or halfway position of the extension passage 201c, the suction device 50 is connected to one port thereof, and suction is performed by switching the three-way valve V. The apparatus 50 may be configured to be switchable between a state in which the inside is sucked and a state in which the inside is opened to the atmosphere.

  In the said embodiment, although the salt supply part 40 was formed in the tank shape (box shape) with a top part, it is not limited to this, For example, even if it is a bowl-shaped thing with the whole top part open | released Good. However, as described above, when the salt supply unit 40 (supply flow channel 201b) is a part of the external supply channel 201 and the money supply device 50 is connected to the downstream of the salt supply unit 40, the salt supply unit 40 is used. It is preferable to prevent the inflow of air from the outside by forming the tank into a tank shape or a pipe shape.

  In the said embodiment, although the conveyor which conveys the some shaping | molding die 30 was provided, it is not limited to this, For example, the shaping | molding die 30 (multiple type | mold 300) arrange | positioned in a fixed position without providing a conveyor Alternatively, the molten salt S may be supplied.

  In the above embodiment, the suction device 50 is indirectly connected to the external supply path 201 by connecting the suction device 50 to the branch path 203. However, the present invention is not limited to this. When the molten salt S is supplied from the intermittent external supply path 201 to the salt supply unit 40 as in the form, the suction device 50 is directly connected to the lower end opening of the external supply path 201. It may be. However, in this case, since it is necessary to remove the suction device 50 before the molten salt S flows out from the lower end opening, it goes without saying that the suction device 50 is preferably connected to the branch path 203 as in the above embodiment. .

  DESCRIPTION OF SYMBOLS 1 ... Salt molded article manufacturing equipment (manufacturing equipment), 10 ... Melting furnace, 20 ... Supply path, 30 ... Mold, 40 ... Salt supply part, 50 ... Suction apparatus, 60a, 60b ... Opening / closing means, 61 ... Shaft, 62 DESCRIPTION OF SYMBOLS ... Valve plate, 63 ... Drive means, 100 ... Crucible, 101 ... Heater, 200 ... Immersion supply path, 201 ... External supply path, 202 ... Connection supply path, 203 ... Branch path, 300 ... Mold, 400 ... Supply part main body, DESCRIPTION OF SYMBOLS 401 ... Molten salt receiving part, 402 ... Introduction path, 403 ... Salt supply hole, L ... Liquid surface, M ... Refractory material, S ... Molten salt (molten salt), SE ... Detection sensor, SR ... Salt room, T ... Salt tile (salt molded product), F ... floor surface, W ... wall surface, R ... ceiling surface

Claims (2)

  A melting furnace for melting the salt and a supply path for introducing the molten salt below the melting furnace are supplied directly or indirectly to the mold disposed below the melting furnace via the supply path. In the salt molded product manufacturing equipment configured to manufacture a salt molded product by cooling and solidifying the molten salt, the melting furnace includes a vessel-shaped crucible formed to store salt, and a salt in the crucible. A heater for heating, and the supply path is fluidly connected to a pipe-shaped immersion supply path disposed in the crucible so as to extend in the vertical direction, and an upper end of the immersion supply path, and And a pipe-shaped external supply path configured to be able to supply molten salt directly or indirectly to a mold that extends downward and is disposed below the melting furnace. The suction device for sucking the internal air can be connected directly or indirectly. Salt molded article manufacturing equipment which is characterized in that it is.   A salt supply unit disposed above the mold, the salt supply unit is formed with salt supply holes for supplying the molten salt into the mold by allowing the molten salt to flow out at a lower portion; It is arranged to be able to supply molten salt from the lower end opening to the salt supply unit, and is configured to be able to connect a suction device directly or indirectly to a midway position, and further comprises an opening / closing means for opening and closing the lower end opening. Item 2. A facility for manufacturing a salt molded article according to Item 1.

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