JPH04118244U - Foundry sand regeneration equipment - Google Patents

Abstract

(57) [Summary] [Purpose] To easily adjust the amount of igros attached to sand particles and efficiently obtain high-quality recycled sand. [Structure] A sand agitation conveyance body equipped with a large number of sand agitation conveyance blades on the outer periphery is arranged horizontally in a substantially drum-shaped casing 15 so as to be freely rotatable, and old sand is introduced from the sand input port 23 at one end of the casing 15. This is a foundry sand recycling device in which recycled sand is discharged from a discharge port 25 at the other end, the casing 15 is placed on a pedestal 6, and the sand input side of the pedestal 6 is connected to a support 2 via a horizontal shaft 7. The casing 15 is supported so as to be movable up and down, and the sand discharge side of the pedestal 6 is supported so as to be movable up and down by a jack 3, so that the angle of inclination between the center axis L of the casing 15 and the ground can be adjusted.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to a foundry sand regeneration device that regenerates used foundry sand, that is, old sand, so that it can be reused. It is something to do.

0002

[Conventional technology]

Conventionally, the foundry sand used for casting, that is, old sand, is stirred in a container to coat the surface of the sand particles. Remove some of the adhering dust (usually called Igros) and use it again as a mold. For this purpose, a foundry sand reclamation device (also called a sand reclaimer) is used. child The regeneration device consists of a fixed drum-shaped casing with many sand agitation conveyor blades around the outer periphery. A sand agitation conveyor equipped with a sand blade is placed horizontally so that it can freely rotate around a horizontal axis. Old sand is input from one end of the ring, and reclaimed sand is discharged from the other end. The number of rotations of the sand agitation conveyor is controlled in order to obtain an appropriate amount of Igros deposits.

0003

[Problem that the idea aims to solve]

By the way, in the above conventional example, adjusting the amount of Igross deposited is extremely troublesome, and There were problems such as the need for training. This invention was made in view of the above-mentioned circumstances, and its purpose is to It is easy to adjust the amount of Igros deposited, and high-quality recycled sand can be obtained efficiently. To provide foundry sand regeneration equipment.

0004

[Means to solve the problem]

In order to achieve the above object, the present invention takes the following technical measures. In other words, the present invention has a large number of sand agitation conveyor brakes on the outer periphery inside a roughly drum-shaped casing. A sand agitation conveyor equipped with In a foundry sand recycling device in which sand is input and recycled sand is discharged from the other end, the above-mentioned The casing is tilted so that the central axis is lower than the sand discharge side with respect to the ground, and It is characterized by being supported so that its inclination angle can be adjusted.

[0005] Further, in the present invention, the casing is placed on a pedestal and supports the sand input side of the pedestal. It is supported on the pillar so that it can move up and down through a horizontal axis perpendicular to the central axis of the casing. The sand discharge side of the pedestal is supported by a jack so that it can move up and down.

[0006]

[Effect]

According to the present invention, the inclination angle of the casing can be increased by operating the jack. As a result, the residence time of sand in the casing is shortened, that is, the time of sand rubbing against each other is shortened. By increasing the amount of Igross deposited and conversely reducing the angle of inclination of the casing, , the residence time of sand inside the casing is longer, and the time for sand to rub against each other is longer, resulting in a decrease in the amount of dust falling off. increases, and the amount of Igross deposited can be reduced. Therefore, the Igros adhesion of sand particles It is easy to adjust.

[0007]

【Example】

Hereinafter, embodiments of the present invention will be described based on the drawings. In the drawing, 1 is the base, 2 is the pillar installed on one end of the base 1, and 3 is the base 1 A pair of screws are erected on the other end so as to be swingable via a horizontal shaft 4 and a bearing stand 5. The bow jack 6 is a casing mount whose bottom surface at one longitudinal end is perpendicular to the longitudinal direction. A horizontal shaft 7 is supported on the upper end of the column 2 via a horizontal shaft 7 and a pivot bracket 8 so as to be movable up and down. The bracket 10 and the other longitudinal end of the pedestal 6 protrude from the outer end of the bearing pedestal 9. The jack 3 is supported by the upper end of the pair of jacks 3 via a pin 11 so as to be movable up and down. Note that both horizontal shafts 4 of the screw jack 3 are connected to the coupling 12 and the interlocking shaft. 13, and is driven by a motor 14 with a reduction gear.

[0008] A drum-shaped case having a central axis L parallel to the longitudinal direction is mounted on the pedestal 6. A casing 15 is fixed at both ends of the casing 15, and a casing 15 is fixed at both ends thereof. , the bearing stands 9 and 16 are fixed so that their centers are located on the central axis L of the casing 15, Both end shaft portions 18A, 18B of the sand agitation conveyor 17 are rotatable on bearing stands 9, 16 via bearings 19, 20. It is pivoted on.

[0009] The casing 15 is approximately drum-shaped, and one end (directly above the column 2) is an old sand input section. 21, and the other end (the end on the jack 3 side) is a recycled sand discharge section 22, An input port 23 is opened above the old sand input section 21, and a fine powder discharge port is opened above the recycled sand discharge section 22. 24 is provided with a recycled sand discharge port 25 on the lower side, and the input section 21 and discharge section 22 are fixed to the frame 6. It is. The drum-shaped central portion of the casing 15 is arranged in a vertical plane including the central axis L. The half body 15A is fixed to the old sand input section 21 and recycled sand discharge section 22. The other half body 15B is inserted into the old sand input section 21 and recycled sand discharge section 22 with bolts and nuts. The half body 15B is removably fixed with a bolt or the like, and support legs 26 are provided at the bottom of both ends of the half body 15B. , the lower end of the support leg 26 extends above the pedestal 6 in a direction perpendicular to the central axis L of the casing 15. The guide rail 27 is slidably mounted on the guide rail 27. Also, the casing 15 halves The outer end of a cylinder 28 provided on the pedestal 6 is connected to the central lower surface of the split body 15B. The cylinder 28 allows the half body 15B to be opened and closed as shown by the two-dot chain line in FIG. The lining material 29 can be easily inspected and replaced, and the blade inspection described below can be done easily. , replacement, etc. can be easily performed.

0010 The sand stirring conveyor 17 has a hollow rotary cylinder 30 to which the shaft parts 18A, 18B are fixed at both ends. , a large number of sand stirring and conveying brakes protruding from the outer peripheral surface of the cylinder 30 in a staggered manner and being replaceable. 31, and a spiral feeding blade fixed to the outer circumferential surface of the cylinder 30 located inside the sand input section 21. It consists of 32 roots. At the end of one shaft portion 18A of the sand agitation conveyor 17, a transmission A pulley 33 is fixed, and the transmission pulley 33 is connected to a motor 34 with a reduction gear mounted on a frame 6. It is rotated via a drive pulley 35 and a belt 36 fixed to the output shaft.

[0011] A suction duct 37 is connected to the fine powder discharge port 24, and a suction fan (not shown) is connected to the fine powder discharge port 24. The fine powder is sucked out. In the above embodiment, the old sand introduced into the casing 15 from the sand inlet 23 is It is fed inward in the direction of the axis L by the impeller 32 and stirred by the blade 31. The sand particles are sequentially conveyed to the discharge section 22 while being The Igros falls moderately due to the mutual friction of the sand, and a moderate amount of Igros is regenerated. It becomes green sand and is discharged from the recycled sand discharge port 25. And the central axis of casing 15 The angle of inclination of the line L with respect to the horizontal plane is determined by driving the motor 14 of the jack 3. can be adjusted as desired by moving the recycled sand discharge part 22 of the casing 15 up and down. , By changing this inclination angle, the residence time of sand in the casing 15 is adjusted, and the amount of igros is can be adjusted.

0012 The present invention is not limited to the above embodiment; for example, the jack 3 is hydraulically A jack can be used.

[0013]

[Effect of the idea]

As mentioned above, the present invention has a substantially drum-shaped casing with a large number of sand agitation conveyors on the outer periphery. A sand stirring conveyor equipped with a feeding blade is horizontally arranged so as to be rotatable, and is attached to one side of the casing. In a foundry sand recycling device, old sand is input from one end and recycled sand is discharged from the other end. Then, tilt the casing so that the central axis is lower on the sand discharge side than the ground. and is characterized by being supported so that its inclination angle can be adjusted. By tilting the center axis of the casing at an arbitrary angle to the ground, old sand can be removed. By adjusting the residence time of sand particles, the amount of Igross that adheres to the surface of sand particles can be adjusted to an appropriate level. Moreover, the adjustment work is easy, and high-quality recycled sand can be obtained efficiently.

[Brief explanation of drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a right side view of FIG. 1.

FIG. 3 is a plan view of FIG. 1;

FIG. 4 is an enlarged vertical cross-sectional view showing the structure inside the casing.

[Explanation of symbols]

2 pillars 3 jack 6 Frame 7 horizontal axis 15 Casing 17 Sand stirring conveyor 21 Sand input section 22 Recycled sand discharge section 23 Sand inlet 25 Recycled sand outlet 31 Sand stirring conveyor blade L center axis line

Claims (2)

[Scope of utility model registration request] Claim 1: A sand agitation conveyor having a large number of sand agitation conveyance blades on the outer periphery is rotatably arranged horizontally in a substantially drum-shaped casing, and old sand is introduced from one end of the casing and used from the other end. A foundry sand recycling device configured to discharge recycled sand, characterized in that the casing is supported so that the central axis is inclined such that the sand discharge side is lower than the ground, and the angle of inclination is adjustable. Foundry sand regeneration equipment. 2. The casing is mounted on a pedestal, the sand input side of the pedestal is supported by a support so as to be movable up and down through a horizontal axis perpendicular to the central axis of the casing, and the sand discharge side of the pedestal is 2. The foundry sand regenerating device according to claim 1, wherein the molding sand regenerating device is supported by a jack so as to be movable up and down.