WO2016031529A1 - 鋳物砂処理設備 - Google Patents
鋳物砂処理設備 Download PDFInfo
- Publication number
- WO2016031529A1 WO2016031529A1 PCT/JP2015/072509 JP2015072509W WO2016031529A1 WO 2016031529 A1 WO2016031529 A1 WO 2016031529A1 JP 2015072509 W JP2015072509 W JP 2015072509W WO 2016031529 A1 WO2016031529 A1 WO 2016031529A1
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- WIPO (PCT)
- Prior art keywords
- sand
- chamber
- foundry sand
- sieve
- conveyor
- Prior art date
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
- B22C5/14—Equipment for storing or handling the dressed mould material, forming part of a plant for preparing such material
- B22C5/16—Equipment for storing or handling the dressed mould material, forming part of a plant for preparing such material with conveyors or other equipment for feeding the material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
- B22C5/04—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by grinding, blending, mixing, kneading, or stirring
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
- B22C5/04—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by grinding, blending, mixing, kneading, or stirring
- B22C5/0404—Stirring by using vibrations while grinding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
- B22C5/06—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by sieving or magnetic separating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
- B22C5/08—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by sprinkling, cooling, or drying
Definitions
- the present invention relates to a foundry sand treatment facility. More specifically, the present invention relates to a foundry sand treatment facility after the frame is released after casting and the casting is taken out.
- foundry sand has been mold-molded and unframed (unmolded) after casting, the cast is taken out, and then sand-treated to be used again for mold molding (for example, JP (See Sho 59-229255).
- JP See Sho 59-229255
- conventional sand treatment equipment it had various functions before kneading, such as a magnetic separator to remove iron pieces, a rough sieve to remove sand blocks, a sand cooler to cool sand, and a hopper to store sand after cooling.
- simple substances are arranged at appropriate intervals in the order of processes.
- the conventional sand treatment facility also requires a single sand transport device (for example, a belt conveyor or a bucket elevator) having the respective functions, and the sand treatment facility as a whole requires a large installation volume. There was a problem. Along with this, there is a problem that the equipment cost becomes high.
- the present invention has been made in view of the above problems, and an object of the present invention is to provide a foundry sand treatment facility capable of reducing the facility volume and reducing the facility cost as the entire sand treatment facility.
- the foundry sand treatment facility is a foundry sand treatment facility that disassembles the frame after casting and further processes the foundry sand after the casting is taken out.
- Disposed in the lower part of the second chamber and stored in the second chamber Characterized in that it comprises a first conveyor for conveying the serial foundry sand, a.
- the foundry sand that has been unframed after casting and further taken out of the foundry is supplied to the second chamber from the opening provided in the dividing wall by the sand radiating device.
- the sand lump formed by agglomeration of the foundry sands contained in the foundry sand is pulverized by the sand radiating device.
- the foundry sand supplied from the opening to the second chamber comes into contact with the air passing from the air inlet to the suction port, and the foundry sand is cooled.
- the cooled foundry sand is stored in the second chamber.
- the foundry sand stored in the second chamber is conveyed to the subsequent process by the first conveyor.
- the functions of sand lump crushing, sand cooling, and sand storage can be satisfied with one facility, and the facility volume can be reduced.
- the foundry sand stored in the second chamber can be conveyed by the first conveyor.
- the sand radiating device includes a comb-toothed endless belt that radiates the foundry sand charged into the first chamber toward the second chamber,
- the sand radiation is disposed above the endless belt with comb teeth and collides with a solid material of a predetermined size or more that is conveyed by the endless belt with comb teeth, crushes a lump of sand, or pushes back the solid material to emit the sand.
- a gate plate to be dropped from the apparatus.
- the sand mass is crushed by the sand radiating device, and the solid matter that is not crushed falls from the sand radiating device without being supplied to the second chamber, and can be collected as foreign matter. .
- a foundry sand treatment facility includes a first sieve disposed below the sand radiating device in the first chamber, and a first chute disposed outside the first sieve. And a second chute disposed below the first sieve and having a lower end opened on the first conveyor, wherein the first sieve falls out of the foundry sand falling from the sand radiating device.
- the foundry sand passing through the first chute is conveyed by the first conveyor via the second chute, and the foundry sand falling without passing through the first sieve is collected as foreign matter via the first chute.
- the foundry sand that has not been supplied to the second chamber by the sand radiating device is charged into the first sieve disposed below the sand radiating device.
- foundry sand smaller than the opening of the first sieve passes through the first sieve and is conveyed by the first conveyor via the second chute.
- core glass, etc.” sand lump that could not be crushed by core glass, iron pieces or sand radiating device (hereinafter referred to as “core glass, etc.”), which is larger than the opening of the first sieve, must pass through the first sieve. It falls without being collected and is collected in a collection container such as a container as a foreign substance through the first chute.
- the foreign matter contained in the foundry sand that has not been supplied to the second chamber by the sand radiating device can be efficiently recovered, and the eye that has not been supplied to the second chamber by the sand radiating device.
- Fine foundry sand can be conveyed by the first conveyor.
- the foundry sand treatment facility is characterized by comprising first vibration means for vibrating the first sieve.
- first vibration means for vibrating the first sieve.
- the foundry sand treatment facility is disposed so as to surround the front end portion of the first conveyor, and the lower portion is formed at the fork of the first discharge chute and the second discharge chute.
- the third chute and the third chute are disposed below the front end portion of the first conveyor so as to be rotatable, and the first discharge chute side or the second discharge chute side by being rotated.
- a second conveyor disposed below the first discharge chute, and the first discharge chute side of the foundry sand thrown in from the first conveyor Foundry sand that has passed through the second sieve located at the second conveyor is conveyed by the second conveyor via the first discharge chute and remains without passing through the second sieve located on the first discharge chute side. Rotate the second sieve with sand And recovering as foreign through the second discharge chute By.
- the foundry sand transported by the first conveyor is put into the second sieve in the third chute from the front end of the first conveyor in the transport direction.
- the dust is danced by the impact of the casting sand thrown into the second sieve, but the tip of the first conveyor is surrounded by the third chute, preventing the dust from diffusing out of the third chute.
- foundry sand smaller than the opening of the second sieve passes through the second sieve and is conveyed by the second conveyor via the first discharge chute.
- those larger than the opening of the second sieve, such as the core glass do not pass through the second sieve and remain as foreign substances.
- the foreign matter remaining on the second sieve passes through the second discharge chute by rotating the second sieve toward the second discharge chute after completion of the transfer of the foundry sand by the first conveyor.
- the foreign matter is collected in a collection container such as a container connected to the second discharge chute. According to this configuration, the foreign matter that has not been completely collected by the first sieve can be efficiently collected, and the foundry sand can be conveyed to a subsequent process.
- the foundry sand treatment facility is characterized by comprising second vibration means for vibrating the second sieve. According to this structure, since the 2nd sieve vibrates with the 2nd vibration means, while being able to perform sieving with a foundry sand and a foreign material efficiently, clogging of a 2nd sieve can be prevented.
- the first conveyor is a belt conveyor, and the tip of the first conveyor is a magnet pulley.
- the iron pieces contained in the foundry sand conveyed by the first conveyor are adsorbed at the tip of the first conveyor by the magnetic force generated by the magnet pulley.
- the magnet pulley further rotates and the first conveyor advances, the magnetic force of the magnet pulley with respect to the iron piece decreases, so the iron piece separates from the magnet pulley and falls, and passes through the second discharge chute as a foreign object to the container or the like. Collected.
- the iron piece contained in the foundry sand conveyed by the first conveyor can be efficiently removed.
- the foundry sand treatment facility is characterized by including a sand loading conveyor for charging the foundry sand into the first chamber. According to this configuration, the foundry sand that has been unframed after casting and further taken out of the cast can be continuously fed into the first chamber by the sand throwing conveyor.
- the foundry sand processing facility is the sand temperature measuring means for measuring the temperature of the foundry sand conveyed by the sand feeding conveyor, and the casting whose temperature is measured by the sand temperature measuring means. And watering means for watering the sand.
- the temperature of the foundry sand is measured by the sand temperature measuring means after being unloaded after casting and after the casting is taken out. After that, based on the measured foundry sand temperature, water is sprayed in an amount necessary for cooling the foundry sand. According to this structure, the amount of water required for cooling the foundry sand can be accurately sprayed onto the foundry sand.
- the suction port is connected to a dust collector, and suction from the suction port is performed by the dust collector. According to this configuration, air can be passed from the air inlet to the suction port with a simple structure and efficiently, and dust generated in the hopper can be collected by the dust collector.
- the air introduced into the second chamber from the air introduction port by the suction from the suction port is radiated from the sand radiating device to the second chamber.
- the sand is in contact with the foundry sand, and the flow direction of the air introduced from the air introduction port into the second chamber by the suction from the suction port is radiated from the sand radiating device to the second chamber.
- the direction is a direction opposite to the radial direction of the foundry sand.
- the present invention as a whole sand treatment facility, it is possible to provide a foundry sand treatment facility capable of reducing the facility volume and reducing the facility cost.
- the hopper 1 has a straight body 1-1 having the same cross-sectional shape downward and a lower end of the straight body 1-1 in the sectional side view (FIG. 2).
- a reduced portion 1-2 that is connected and has a cross-sectional area that decreases in the downward direction.
- the lower end of the reduced portion 1-2 is open.
- a dividing wall 8 provided with an opening 9 is provided inside the hopper 1 perpendicular to the bottom surface, and the hopper 1 is divided into a first chamber 1a and a second chamber 1b.
- a suction port 10 is connected to the partition wall 8 side on the upper surface of the second chamber 1b.
- the suction port 10 is connected to a dust collector (not shown) that generates suction force.
- an air introduction port 11 for introducing air into the second chamber 1b is connected to the side surface of the second chamber 1b opposite to the dividing wall 8 in communication.
- 1st conveyor 12 is arrange
- a belt conveyor constituted by a first front pulley 12a, a first rear pulley 12b, and a first belt 12c is disposed as the first conveyor 12.
- the first belt 12c is stretched between the first front pulley 12a and the first rear pulley 12b.
- the first front pulley 12a is provided with a V belt (not shown) and a V pulley (not shown).
- a first conveyor drive motor (not shown) is rotatably disposed. By driving the first conveyor drive motor, the first belt 12c rotates in the transport direction (clockwise in FIG. 1). Further, the width of the first conveyor 12 is set so that the casting sand put in from the first chamber 1a and the second chamber 1b in the hopper 1 is efficiently conveyed, It is set to the same level or widely.
- a gantry 1c is disposed as shown in FIGS. 1 and 2, and the sand radiating device 2 is installed on the gantry 1c.
- the sand radiating device 2 is a device that radiates sand by rotating an endless belt 22 with comb teeth. Note that “radiating sand” means releasing sand diagonally upward or horizontally.
- the endless belt 22 with comb teeth in the sand radiating device 2 is stretched between a sand radiating front pulley 23 and a sand radiating rear pulley 24.
- the sand radiating front pulley 23 has a V belt 25a.
- the sand radiation motor 25 is rotatably arranged via the V pulleys 25b and 25c.
- the comb-toothed endless belt 22 rotates in the conveying direction (clockwise in FIG. 3).
- the comb-toothed endless belt 22 has a plurality of comb teeth 22 a formed in parallel at intervals in the transport direction and the belt width direction.
- the comb teeth 22a are preferably 10 mm to 30 mm in length and 1 mm to 15 mm in thickness.
- the interval at which the comb-toothed endless belt 22 is attached in the conveying direction is preferably 20 mm or more and 50 mm or less.
- the comb teeth 22a are preferably arranged at intervals of 5 mm to 50 mm in the width direction. Furthermore, in this embodiment, the sand radiation front pulley 23 is disposed above the sand radiation rear pulley 24, and the comb-toothed endless belt 22 is disposed to be inclined with respect to the horizontal plane. With this configuration, the sand radiating device 2 can radiate foundry sand obliquely upward. A constant space above the comb-toothed endless belt 22 is provided so as to be covered by the surrounding chute 26.
- a rotating shaft 27 a is disposed above the sand radiation front pulley 23 in the surrounding chute 26.
- a plurality of gate plates 27 aligned in the width direction of the endless belt 22 with comb teeth are provided so as to be rotatable about a rotation shaft 27a.
- one end of each of the plurality of springs 28 is fixed to the upper end portion of each of the plurality of gate plates 27, and the other end of each of the plurality of springs 28 is located downstream of the gate plate 27 in the surrounding chute 26 (right side in FIG. 3). are fixed respectively. Due to the spring 28 and the rotating shaft 27a, the comb-toothed endless belt 22 and the gate plate 27 have a right-angle relationship.
- the surrounding chute 26 has a stopper shaft (not shown) provided so that the conveying direction of the comb-toothed endless belt 22 and the gate plate 27 are perpendicular to each other. Further, a gap is secured between the lower end of each gate plate 27 and the tip of the comb teeth 22a, and the size of this gap is preferably 3 mm or more and 10 mm or less. In the present embodiment, the size of the gap between the lower end of the gate plate 27 and the tip of the comb tooth 22a is set to 5 mm.
- a rotary shaft 29a is disposed above the sand radiating rear pulley 24 in the surrounding chute 26, and a plate member 29 is provided to be rotatable about the rotary shaft 29a.
- the rotation direction of the plate member 29 is the sand radiation front pulley 23 side, and the rotation angle is up to about 90 degrees.
- a stopper shaft (not shown) is provided so that the conveyance direction of the comb-toothed endless belt 22 and the plate member 29 are in a right angle relationship.
- a gap is secured between the lower end portion of the plate member 29 and the tip of the comb teeth 22a of the endless belt 22 with comb teeth, and the size of the gap is preferably 3 mm or more and 10 mm or less. In the present embodiment, the size of the gap between the lower end of the plate member 29 and the tip of the comb teeth 22a is set to 5 mm.
- a sand radiation guide 30 that is plate-shaped and can be rotated on an extension line in the conveyance direction of the comb-toothed endless belt 22, at the front end of the comb-toothed endless belt 22. It is arranged. With the sand radiation guide 30, the radiation angle of the foundry sand radiated from the sand radiation device 2 can be adjusted.
- the sand throwing conveyor 19 is arranged so that the sand throwing belt 19b goes from the outside of the hopper 1 into the first chamber 1a in the hopper 1 and the leading end in the transport direction is above the endless belt 22 with comb teeth. It is arranged.
- a sand throwing front pulley 19a disposed above the sand radiating device 2
- a sand throwing rear pulley (not shown) disposed outside the hopper 1
- sand throwing A belt conveyor constituted by a sand throwing belt 19b stretched between the front pulley 19a and the sand throwing rear pulley is disposed.
- a sand throwing conveyor drive motor (not shown) is rotatably disposed on the sand throwing front pulley 19a via a V belt (not shown) and a V pulley (not shown). By driving the sand throwing conveyor drive motor, the sand throwing conveyor 19 rotates in the transport direction (clockwise in FIG. 1).
- the sand throwing conveyor 19 includes a sand temperature measuring means 20 for measuring the temperature of the foundry sand conveyed by the sand throwing conveyor 19, and a foundry sand whose temperature has been measured by the sand temperature measuring means 20.
- Watering means 21 for spraying water is disposed.
- a thermocouple is disposed on the sand loading conveyor 19 as the sand temperature measuring means 20.
- a known thermometer such as a resistance thermometer or a non-contact thermometer can be used.
- a nozzle that can spray water into the foundry sand as a shower is disposed on the sand injection conveyor 19 as the water spray means 21.
- a known device such as a device for spraying water can be used. Further, between the sand temperature measuring means 20 and the watering means 21, as shown in FIG. 1, an operation for determining the watering amount by the watering means 21 based on the sand temperature measured by the sand temperature measuring means 20. Means 20a is connected.
- a known device having a calculation function such as an IC, a PLC, or a personal computer can be used.
- the first sieve 3 is configured in a mesh shape, and the width of the opening in the inclination direction is preferably 15 mm or more and 35 mm or less, and the width of the opening in the direction perpendicular to the inclination is 3 mm or more and 10 mm or less. It is preferable to do.
- variety of the opening of an inclination direction is 25 mm, and the width
- the inclination angle ⁇ is smaller than 45 degrees, the foreign matter thrown in from the sand radiating device 2 remains on the first sieve 3, and if the inclination angle ⁇ is larger than 60 degrees, the foreign matter and foundry sand are first.
- the first chute 3 passes through the first chute 5 without being sieved by the sieve 3 and is collected in the foreign matter collecting container 7.
- the inclination angle ⁇ is 45 degrees.
- the first vibrating means 4 may be disposed on the first sieve 3.
- the first vibrating means 4 has a plate member (on the surface opposite to the sand radiating device 2 and a plate member) so that the foreign matter and casting sand introduced from the sand radiating device 2 do not collide with the first vibrating means 4. It is arranged on the first sieve 3 via a not-shown).
- various means such as an eccentric motor or an air vibration cylinder that generates vibration by a cylinder by inputting air can be used.
- an eccentric motor is used as the first vibrating means 4.
- the inclination angle ⁇ of the first sieve 3 is preferably 15 degrees or more and 60 degrees or less.
- the first chute 5 is respectively disposed from the two lower ends of the mountain-shaped first sieve 3 toward the foreign material collection container 7.
- the first chute 5 is connected to the reduced portion 5a whose width decreases downward from the lower end of the first sieve 3 and the lower end of the reduced portion 5a, and the conduit portion 5b having the same width downward. And is composed of.
- the second chute 6 in the first chamber 1 a is disposed below the first sieve 3 and between the pair of first chutes 5. The lower end of the second chute 6 opens on the first conveyor 12.
- the first front pulley 12 a (the front end portion of the first conveyor 12) in the first conveyor 12 is surrounded by the third chute 13.
- the third chute 13 is provided with an opening 13c, and the first belt 12c is disposed so as to pass through the opening 13c.
- the first discharge chute 13a and the second discharge chute 13b are opened at the lower portion of the third chute 13 and are bifurcated.
- the foundry sand and the like conveyed to the first conveyor 12 usually falls into the opening of the first discharge chute 13a.
- the first discharge chute 13 a is opened toward the second conveyor 16, and the second discharge chute 13 b is opened toward the foreign material collection container 17.
- a rotation means 14a is provided between the first discharge chute 13a and the second discharge chute 13b, and the first discharge chute is rotated by the rotation means 14a.
- a second sieve 14 is disposed on the 13a side or the second discharge chute 13b side.
- the rotating means 14a rotates the second sieve 14 between the first discharge chute 13a side and the second discharge chute 13b side by, for example, a motor and a gear train.
- the rotating means 14a may rotate the second sieve 14 with a known device such as a motor and a cam, or hydraulic pressure, an air cylinder, a rack and a gear.
- the 2nd sieve 14 is comprised by mesh shape, and the magnitude
- the second vibrating means 15 may be disposed on the second sieve 14.
- the second vibrating means 15 is disposed at the tip of a bar member 14b provided in the rotating means 14a.
- various means such as an eccentric motor and an air vibration cylinder that generates vibration by the cylinder by inputting air can be used.
- an eccentric motor is used as the second vibrating means 15.
- the first conveyor drive motor, sand radiation motor 25 and sand throwing conveyor drive motor are driven.
- the dust collector is operated to allow air to pass from the air inlet 11 to the suction port 10.
- the sand throwing conveyor 19 is unframed after casting and further carrying the foundry sand after taking out the casting from the previous process.
- the foundry sand transported by the sand throwing conveyor 19 is not only foundry sand, Contains sand lump formed by agglomeration of core glass, iron pieces and foundry sand. Hereinafter, it is also referred to as “cast sand”.
- the amount (weight) of foundry sand conveyed from the previous process is made almost constant per unit area of the sand loading conveyor 19.
- the temperature of the foundry sand or the like (open frame sand temperature T1) conveyed by the sand throwing conveyor 19 is measured by the foundry sand coming into contact with a thermocouple as the sand temperature measuring means 20.
- the measured unframed sand temperature T1 is transmitted to the computing means 20a.
- the specific heat of the foundry sand, the latent heat of water evaporation, and the temperature of the foundry sand in the second chamber 1b (cooling sand temperature T2) that are arbitrarily set are input in advance to the computing means 20a.
- the amount of water to be sprinkled per unit area in the sand loading conveyor 19 necessary for lowering the temperature of the foundry sand from the unsealed sand temperature T1 to the cooled sand temperature T2 is calculated by the calculating means 20a. It is calculated by comparing with the latent heat of vaporization. Then, based on the calculated watering amount, water is sprayed from the watering means 21 toward the foundry sand or the like.
- the endless belt 22 with comb teeth in the sand radiating device 2 is rotating, and sprinkled foundry sand or the like is fed from the sand throwing conveyor 19. Foundry sand or the like thrown into the sand radiating device 2 enters between the plurality of comb teeth 22a, passes between the gate plate 27 and the endless belt 22 with comb teeth, and is radiated toward the second chamber 1b. Also, the sand lump contained in the foundry sand and the like charged into the sand radiating device 2 is crushed by the rotating comb teeth 22a while colliding with the gate plate 27 to be in a sand state. It passes between the toothed endless belts 22 and radiates toward the second chamber 1b.
- the core dust and the like contained in the foundry sand and the like put into the sand radiating device 2 is a foreign substance, and the sand collides with the gate plate 27 while maintaining the rotation speed of the endless belt 22 with comb teeth. It is bounced out of the surrounding chute 26 in the radiation device 2 and falls onto the first sieve 3.
- the rotation speed of the endless belt 22 with comb teeth is preferably 2 m / s to 12 m / s. If the rotational speed of the comb-toothed endless belt 22 is slower than 2 m / s, the foundry sand cannot be emitted toward the second chamber 1b. Further, if the rotational speed of the endless belt 22 with comb teeth is faster than 12 m / s, the V belt 25a, the endless belt 22 with comb teeth, the sand radiating front pulley 23, and the sand radiating rear pulley 24 are consumed quickly. Deterioration due to collision with foundry sand and foreign matter is accelerated. In the present embodiment, the rotational speed of the endless belt 22 with comb teeth is 7 m / s.
- Core dust and the like remaining in the sand radiating device 2 without falling on the first sieve 3 remain on the comb-toothed endless belt 22 with the sand radiating motor 25 stopped.
- the core glass or the like can be dropped onto the first sieve 3 by rotating the plate member 29 about the rotation shaft 29a.
- the core plate or the like rotates the gate plate 27 while extending the spring 28 fixed to the upper end portion of the gate plate 27. It is made to move, passing through the gap between the comb teeth 22a and the lower end of the gate plate 27, and radiated toward the second chamber 1b.
- the core dust and the like emitted here are collected in the foreign material collection container 17 through the second sieve 14 described later.
- the foundry sand radiated from the sand radiating device 2 enters the second chamber 1b through the opening 9, and is stored there.
- the casting sand comes into contact with the air passing from the air inlet 11 toward the suction port 10 until it is radiated by the sand radiating device 2 and stored in the second chamber 1b.
- the water adhering to the foundry sand evaporates and is cooled to the cooling sand temperature T2.
- the dust that rises when the foundry sand comes into contact with air is collected by a dust collector.
- the foundry sand stored in the second chamber 1b can impart an aging effect by providing moisture.
- aging refers to bentonite that is contained in the foundry sand as a caking additive and is stored by giving moisture to bentonite that has been dehydrated by the heat of the molten metal during casting and has reduced caking strength. It means that water is permeated again to restore caking power.
- the moisture applied to the foundry sand is water sprayed by the sprinkling means 21 and water that has not been evaporated from the foundry sand radiated by the sand projecting device 2.
- the water for aging the foundry sand is added to the water required for cooling the foundry sand in the watering means 21 described above. Also good.
- the foreign matter removed from the sand radiating device 2 falls toward the first sieve 3.
- the foundry sand that adheres to the foreign matter and passes through the first sieve 3 smaller than the opening of the first sieve 3 is sent to the second chute 6 and stored.
- the foreign matter that is larger than the opening of the first sieve 3 and cannot pass through the first sieve 3 falls and is sent from the first sieve 3 to the first chute 5 and passes through the reduced portion 5a and the conduit portion 5b in the first chute 5. Then, it is recovered into the foreign material recovery container 7.
- the first sieve 3 When the foreign matter falls from the sand radiating device 2 toward the first sieve 3, the first sieve 3 may be vibrated by the first vibrating means 4. The amplitude and frequency of the first vibration means 4 can be changed according to the situation. The vibration of the first sieve 3 can prevent clogging of the first sieve 3. Moreover, since the foreign matter on the 1st sieve 3 can be easily sent below by the vibration of the 1st sieve 3, the inclination angle of the 1st sieve 3 can be made small.
- Foundry sand or the like stored in the second chute 6 is conveyed by rotating the first belt 12c in the first conveyor 12, passes between the dividing wall 8 and the first belt 12c, and passes through the second chamber 1b. It is conveyed to. Moreover, the foundry sand stored in the second chamber 1b is conveyed by rotating the first belt 12c in the first conveyor 12, and between the right side surface of the hopper 1 and the first belt 12c shown in FIG. Is passed through the second chute 14 disposed in the third chute 13. At this time, the dust is danced by the impact of the casting sand thrown into the second sieve 14, but since the tip of the first conveyor 12 is surrounded by the third chute 13, the dust diffuses out of the third chute 13. None do.
- the foundry sand that passes through the second sieve 14 smaller than the opening of the second sieve 14 passes through the first discharge chute 13a and onto the second conveyor 16. Fall. Since the second conveyor 16 is rotating toward the post-processing device (not shown), the foundry sand is conveyed to the post-processing device. On the other hand, the foreign matter that is larger than the opening of the second sieve 14 and cannot pass through the second sieve 14 remains on the second sieve 14. The foreign matter remaining on the second sieve 14 passes through the second discharge chute 13 b and is collected in the foreign matter collection container 17 by rotating the second sieve 14.
- the post-processing apparatus includes, for example, a kneading apparatus that supplies caking material such as bentonite or water to the foundry sand and then kneads the foundry sand.
- the second sieve 14 When the casting sand or the like falls from the first conveyor 12 toward the second sieve 14, the second sieve 14 may be vibrated by the second vibrating means 15. The amplitude and frequency of the second vibration means 15 can be changed according to the situation. The clogging of the second sieve 14 can be prevented by the vibration of the second sieve 14.
- the first front pulley 12a may be a magnet pulley.
- the fine iron piece in the foundry sand etc. currently conveyed by the 1st conveyor 12 is adsorb
- the iron piece is separated from the magnet pulley, so that the attracting force due to the magnetic force is reduced.
- the mountain-shaped first sieve 3 is disposed, but the shape of the first sieve 3 is not limited to the mountain shape.
- the suction port 10 is connected in communication with the side of the dividing wall 8 on the upper surface of the second chamber 1 b, and the side surface of the air introducing port 11 opposite to the dividing wall 8 in the second chamber 1 b. It is connected in communication.
- the sand radiating device 2 is installed in the first chamber 1a. Therefore, as shown in FIG. 5, the flow direction of the air (hereinafter referred to as fluid air) introduced from the air introduction port 11 to the second chamber 1 b by suction from the suction port 10 is the second from the sand radiating device 2. It becomes a direction opposite to the radial direction of the foundry sand radiated to the chamber 1b.
- opposite direction means that in FIG. 1, air flows from right to left and casting sand is radiated from left to right. That is, the angle of each movement direction projected on the horizontal plane is in the range of 90 ° (right angle direction) to 180 ° (directly opposite direction).
- the contact between the flowing air and the casting sand radiated from the sand radiating device 2 causes heat transfer from the casting sand radiated from the sand radiating device 2 to the flowing air. Furthermore, moisture contained in the foundry sand evaporates. Therefore, the foundry sand radiated from the sand radiating device 2 is cooled. According to this embodiment, since the flowing air and the foundry sand radiated from the sand radiating device 2 are in contact with each other while moving in the opposite direction, the heat from the foundry sand radiated from the sand radiating device 2 to the flowing air. The movement becomes efficient. Moreover, water tends to evaporate from the foundry sand.
- the dust collector is connected to the suction port 10 and sucks air introduced from the air introduction port 11 into the second chamber 1b. Therefore, compared with the case where the dust collector is not connected to the suction port 10, the flow speed of the fluidized air is increased. That is, the frequency of discharging the air in the second chamber 1b heated by the contact with the casting sand radiated from the sand radiating device 2 from the suction port 10 is increased, and the room temperature air outside the second chamber 1b is air. The frequency of taking in into the 2nd chamber 1b from the inlet 11 becomes high. Therefore, the temperature of the air in the second chamber 1b and the flowing air can always be kept near the temperature outside the second chamber 1b.
- the temperature of the air in the second chamber 1b and the temperature of the flowing air can always be kept near the temperature outside the second chamber 1b, heat exchange between the foundry sand radiated from the sand radiating device 2 and the air can be performed efficiently. Can do. Moreover, since the temperature of the air in the second chamber 1b and the flowing air can always be kept near the humidity outside the second chamber 1b, the moisture from the foundry sand can be efficiently evaporated.
- the adjustment board 50 located so that the flow direction of flowing air may be adjusted in the 2nd chamber 1b as needed.
- the adjustment plate 50 can adjust the flow direction of the flowing air and cool the foundry sand radiated from the sand radiating device 2 efficiently.
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Abstract
Description
また、本発明は以下の詳細な説明により更に完全に理解できるであろう。しかしながら、詳細な説明および特定の実施例は、本発明の望ましい実施の形態であり、説明の目的のためにのみ記載されているものである。この詳細な説明から、種々の変更、改変が、当業者にとって明らかだからである。
出願人は、記載された実施の形態のいずれをも公衆に献上する意図はなく、開示された改変、代替案のうち、特許請求の範囲内に文言上含まれないかもしれないものも、均等論下での発明の一部とする。
本明細書あるいは請求の範囲の記載において、名詞及び同様な指示語の使用は、特に指示されない限り、または文脈によって明瞭に否定されない限り、単数および複数の両方を含むものと解釈すべきである。本明細書中で提供されたいずれの例示または例示的な用語(例えば、「等」)の使用も、単に本発明を説明し易くするという意図であるに過ぎず、特に請求の範囲に記載しない限り本発明の範囲に制限を加えるものではない。
1 ホッパ
1a 第一室
1b 第二室
1c 架台
1-1 直胴部
1-2 縮小部
2 砂放射装置
3 第一篩
4 第一振動手段
5 第一シュート
5a 縮小部
5b 導管部
6 第二シュート
7 異物回収コンテナ
8 分割壁
9 開口部
10 吸引口
11 空気導入口
12 第一コンベア
12a 第一フロントプーリ(マグネットプーリ)
12b 第一リアプーリ
12c 第一ベルト
13 第三シュート
13a 第一排出シュート
13b 第二排出シュート
13c 開口部
14 第二篩
14a 回動手段
14b 棒部材
15 第二振動手段
16 第二コンベア
17 異物回収コンテナ
18 開口部
19 砂投入コンベア
19a 砂投入フロントプーリ
19b 砂投入ベルト
20 砂温度測定手段
20a 演算手段
21 散水手段
22 櫛歯付エンドレスベルト
22a 櫛歯
23 砂放射フロントプーリ
24 砂放射リアプーリ
25 砂放射モータ
25a Vベルト
25b Vプーリ
25c Vプーリ
26 包囲シュート
27 ゲート板
27a 回転軸
28 ばね
29 板部材
29a 回転軸
30 砂放射ガイド
50 調整板
Claims (11)
- 鋳込み後に解枠して、更に鋳物を取り出した後の鋳物砂を処理する、鋳物砂処理設備であって、
鋳物を取り出した後の鋳物砂を受け入れる第一室と、前記第一室で受け入れた鋳物砂を貯蔵する第二室とに分割壁によって分割されたホッパと、
前記第一室の内部に配設されると共に前記第一室内に投入された前記鋳物砂の砂塊を粉砕し、砂塊粉砕後の前記鋳物砂を放射して前記分割壁に設けられた開口部から前記第二室へ供給する砂放射装置と、
前記第二室に連通接続された、空気を前記第二室に導入する空気導入口及び前記空気導入口から導入された空気を前記第二室から吸引する吸引口と、
前記第二室の下部に配設されると共に、前記第二室に貯蔵されている前記鋳物砂を搬送する第一コンベアと、
を備えていることを特徴とする鋳物砂処理設備。 - 前記砂放射装置は、
前記第一室内に投入された前記鋳物砂を前記第二室に向けて放射する櫛歯付エンドレスベルトと、
前記櫛歯付エンドレスベルトの上方に配置され、前記櫛歯付エンドレスベルトで搬送される所定の大きさ以上の固形物が衝突し、砂塊を破砕し、または、前記固形物を押し戻して前記砂放射装置から落下させる、ゲート板とを備える、
請求項1に記載の鋳物砂処理設備。 - 前記第一室における前記砂放射装置の下方に配設された第一篩と、
前記第一篩の外側に配設された第一シュートと、
前記第一篩の下方に配設され、前記第一コンベア上に下端が開口する第二シュートと、
を備えており、
前記砂放射装置から落下する前記鋳物砂の内、前記第一篩を通過した鋳物砂は前記第二シュートを介して前記第一コンベアで搬送され、前記第一篩を通過せずに落下した鋳物砂は前記第一シュートを介して異物として回収することを特徴とする請求項2に記載の鋳物砂処理設備。 - 前記第一篩を振動させる第一振動手段を備えたことを特徴とする請求項3に記載の鋳物砂処理設備。
- 前記第一コンベアの先端部を包囲して配設されると共に、下位部が第一排出シュート及び第二排出シュートの二股に形成された第三シュートと、
前記第三シュート内における前記第一コンベアの先端部の下方に回動可能に配設されると共に、回動されることにより前記第一排出シュート側又は前記第二排出シュート側に位置する第二篩と、
前記第一排出シュートの下方に配設された第二コンベアと、
を備えており、
前記第一コンベアから投入される前記鋳物砂の内、前記第一排出シュート側に位置した前記第二篩を通過した鋳物砂は前記第一排出シュートを介して前記第二コンベアで搬送され、前記第一排出シュート側に位置した前記第二篩を通過せずに残存した鋳物砂は、前記第二篩を回動させることにより前記第二排出シュートを介して異物として回収することを特徴とする請求項3又は請求項4に記載の鋳物砂処理設備。 - 前記第二篩を振動させる第二振動手段を備えたことを特徴とする請求項5に記載の鋳物砂処理設備。
- 前記第一コンベアはベルトコンベアであって、
前記第一コンベアの先端部はマグネットプーリであることを特徴とする請求項6に記載の鋳物砂処理設備。 - 前記第一室内に前記鋳物砂を投入する砂投入コンベアを備えたことを特徴とする請求項7に記載の鋳物砂処理設備。
- 前記砂投入コンベアによって搬送される前記鋳物砂の温度を測定する砂温度測定手段と、
前記砂温度測定手段により温度が測定された前記鋳物砂に散水する散水手段と、
を備えたことを特徴とする請求項8に記載の鋳物砂処理設備。 - 前記吸引口は集塵機に連通接続されており、
前記吸引口からの吸引は前記集塵機によって行うことを特徴とする請求項9に記載の鋳物砂処理設備。 - 前記吸引口からの吸引により前記空気導入口から前記第二室に導入される空気が前記砂放射装置から前記第二室に放射される前記鋳物砂と接触するようになっており、
前記吸引口からの吸引により前記空気導入口から前記第二室に導入される空気の流れ方向が前記砂放射装置から前記第二室に放射される前記鋳物砂の放射方向と反対方向にされていることを特徴とする請求項10に記載の鋳物砂処理設備。
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CN108637168A (zh) * | 2018-07-20 | 2018-10-12 | 河南省矿发起重机有限公司 | 一种铸造模具砂土循环再利用装置 |
EP3701208A4 (en) * | 2017-10-25 | 2021-09-01 | Finn Recycling OY | HEAT RECOVERY OR SAND PURIFICATION |
CN114905005A (zh) * | 2022-02-15 | 2022-08-16 | 江西樟树市福铃内燃机配件有限公司 | 一种内燃机配件砂处理生产线及其生产工艺 |
CN116921635A (zh) * | 2023-08-08 | 2023-10-24 | 安徽祥东高端装备股份有限公司 | 一种热芯盒射芯机的自动防堵加砂装置 |
CN117505775A (zh) * | 2024-01-04 | 2024-02-06 | 淄博通普真空设备有限公司 | 铸造砂冷却机 |
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Publication number | Priority date | Publication date | Assignee | Title |
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EP3701208A4 (en) * | 2017-10-25 | 2021-09-01 | Finn Recycling OY | HEAT RECOVERY OR SAND PURIFICATION |
US11619447B2 (en) | 2017-10-25 | 2023-04-04 | Finn Recycling Oy | Thermal recovery or cleaning of sand |
CN108637168A (zh) * | 2018-07-20 | 2018-10-12 | 河南省矿发起重机有限公司 | 一种铸造模具砂土循环再利用装置 |
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CN116921635A (zh) * | 2023-08-08 | 2023-10-24 | 安徽祥东高端装备股份有限公司 | 一种热芯盒射芯机的自动防堵加砂装置 |
CN116921635B (zh) * | 2023-08-08 | 2024-03-19 | 安徽祥东高端装备股份有限公司 | 一种热芯盒射芯机的自动防堵加砂装置 |
CN117505775A (zh) * | 2024-01-04 | 2024-02-06 | 淄博通普真空设备有限公司 | 铸造砂冷却机 |
CN117505775B (zh) * | 2024-01-04 | 2024-03-05 | 淄博通普真空设备有限公司 | 铸造砂冷却机 |
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