A sand suction device for producing coated sand shells

Abstract

The invention discloses a sand suction device for producing coated sand shells, comprising a mold fixed on a frame, a support frame provided at the upper end of the mold, a heat insulation board fixed on the inner wall of the support frame, the support frame connected to a lifting mechanism, the lifting mechanism used to drive the support frame to move in a vertical direction, a sand suction frame provided in the support frame, the sand suction frame fixed on the heat insulation board, the sand suction frame provided with sand suction holes of different sizes, the sand suction frame fixed to a hose through a clamp, the hose connected to a vacuum box, the vacuum box connected to a vacuum pump through a connecting pipe. The sand suction device for producing coated sand shells can change the sand blowing process into a sand suction process, liberate manpower, and improve the working environment.

Description

Technical Field

[0001] The invention relates to a sand suction device, in particular to a sand suction device for producing coated sand shells. Background Art

[0002] The existing production of coated sand shells is still a traditional manual operation. When the coated sand falls into the sand frame, it completely buries the mold. Under the action of high temperature, the coated sand on the surface of the mold quickly solidifies and forms a hard shell. At the same time, the mold temperature will drop rapidly during the crusting process. The coated sand far away from the mold surface will not form a hard shell because it cannot get enough heat, and will form floating sand. During the sand shell molding process, workers hold compressed air guns to blow off the excess floating sand on the sand shell. This operation causes fine sand to fly, a lot of dust, and a bad working environment. Summary of the invention

[0003] The purpose of the present invention is to provide a sand suction device for the production of coated sand shells, which changes the sand blowing process into a sand suction process, liberates manpower and improves the working environment.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A sand suction device for producing coated sand shells, comprising a mold fixed on a frame, a support frame being provided at the upper end of the mold, a heat insulation board being fixed on the inner wall of the support frame, the support frame being connected to a lifting mechanism, the lifting mechanism being used to drive the support frame to move in a vertical direction, a sand suction frame being provided in the support frame, the sand suction frame being fixed on the heat insulation board, the sand suction frame being provided with sand suction holes of different sizes, the sand suction frame being fixed to a hose by a clamp, the hose being connected to a vacuum box, and the vacuum box being connected to a vacuum pump by a connecting pipe.

[0006] Preferably, the support frame is formed by four support plates fixedly enclosed.

[0007] Preferably, the lifting mechanism includes a cylinder arranged on both sides of the support frame, the upper end of the cylinder is fixed to the mounting bracket, the mounting bracket is fixed on the frame, and the two ends of the support frame close to the cylinder are respectively fixed with side brackets one, and the piston rod of the cylinder is fixed to the side bracket one.

[0008] Preferably, the lifting mechanism also includes guide shafts symmetrically arranged on both sides of the support frame, the upper and lower ends of the guide shafts are respectively fixed to fixed supports, the fixed supports are respectively fixed to the frame, and a side bracket 2 is fixed to one end of the support frame close to the guide shaft, and the end of the side bracket away from the support frame is fixed to the slider, and the guide shaft passes through the slider.

[0009] Preferably, the sand suction frame is fixed to the heat insulation board by U-shaped bolts.

[0010] Preferably, the sand suction frame includes two symmetrically arranged straight steel pipes 1 and two symmetrically arranged straight steel pipes 2, the straight steel pipe 1 is vertically arranged to the straight steel pipe 2, the straight steel pipe 1 is connected to the straight steel pipe 2 through a bent steel pipe respectively, all the straight steel pipes 1, straight steel pipe 2 and bent steel pipes form a frame shape, one of the straight steel pipes 1 is fixedly connected to a welding elbow, the welding elbow is fixed to a pagoda joint, the pagoda joint is fixed to a hose through a clamp, and one end of the straight steel pipe 1 and the straight steel pipe 2 is respectively fixed with one or more copper pipes.

[0011] Preferably, the sand absorption frame also includes a connecting steel pipe 1 fixed at the lower ends of straight steel pipe 1 and straight steel pipe 2, the connecting steel pipe 1 at the lower end of the straight steel pipe connected to the welding elbow is respectively connected to the sand absorption steel pipe 1, the straight steel pipe 2 and the connecting steel pipe 1 at the lower end of another straight steel pipe are respectively connected to the sand absorption steel pipe 2, the sand absorption steel pipe 2 below the straight steel pipe 2 is respectively connected to the sand absorption steel pipe 3 through the connecting steel pipe 2, the opposite ends of the sand absorption steel pipe 2 are respectively fixed with transverse steel pipes, the lower end of the transverse steel pipe is fixed to the vertical steel pipe, the two ends of the sand absorption steel pipe 1, the two ends of the sand absorption steel pipe 2, the two ends of the sand absorption steel pipe 3 and one end of the transverse steel pipe are respectively fixed with sealing plates, and the sand absorption holes are respectively arranged on the sealing plate, copper pipe, straight steel pipe 1, straight steel pipe 2, sand absorption steel pipe 1, sand absorption steel pipe 2 and sand absorption steel pipe 3.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1) The present invention uses vacuum as power, can absorb sand from multiple positions at the same time, and quickly clean up the floating sand on the sand shell.

[0014] 2) The sand suction frame has a special contour design, multiple sand suction holes, and a layout of sand suction holes that adapts to the airflow and a design of hole size, so that the floating sand can be cleaned up quickly and synchronously at multiple points, avoiding the floating sand from being softened or even crusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a sand suction device for producing coated sand shells in an embodiment of the present invention;

[0016] Figure 2 is a schematic structural diagram of a vacuum box in an embodiment of the present invention;

[0017] Figure 3 2 is a schematic diagram of the structure of the sand suction frame in an embodiment of the present invention;

[0018] In the figure, 1, mold, 2, support frame, 3, heat insulation board, 4, cylinder, 5, mounting bracket, 6, side bracket 1, 7, guide shaft, 8, fixed support, 9, side bracket 2, 10, slider, 11, clamp, 12, hose, 13, sand suction frame, 1301, straight steel pipe 1, 1302, straight steel pipe 2, 1303, bent steel pipe, 1304, copper pipe, 1305, connecting steel pipe 1, 1306 , sand absorption steel pipe one, 1307, sand absorption steel pipe two, 1308, connecting steel pipe two, 1309, sand absorption steel pipe three, 1310, horizontal steel pipe, 1311, vertical steel pipe, 1312, sealing plate, 1313, sand absorption hole, 1314, welding elbow, 1315, pagoda joint, 14, vacuum box, 15, transition pipe, 16, solenoid valve, 17, automatic three-way ball valve, 18, connecting flange. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-3 As shown, a sand suction device for the production of coated sand shells includes a mold 1 fixed on a frame, and a support frame 2 is provided at the upper end of the mold 1. The support frame 2 is formed by four support plates fixedly enclosed. A heat insulation board 3 is fixed on the inner wall of the support frame 2. The heat insulation board 3 is made of non-metallic material, which can not only isolate the high temperature on the surface of the mold 1, but also effectively prevent the coated sand from adhering to the support frame 1 during the high-temperature curing process. The support frame 2 is connected to a lifting mechanism, and the lifting mechanism is used to drive the support frame 2 to move in the vertical direction. The lifting mechanism includes a cylinder 4 arranged on both sides of the support frame 2, and the upper end of the cylinder 4 is fixed to a mounting bracket 5, and the mounting bracket 5 is fixed to the frame. Side brackets 6 are respectively fixed at both ends of the support frame 2 close to the cylinder 4, and the piston rod of the cylinder 4 is fixed to the side bracket 6. The lifting mechanism also includes a guide shaft 7 symmetrically arranged on both sides of the support frame 2, and the upper and lower ends of the guide shaft 7 are respectively fixed to fixed supports 8, and the fixed supports 8 are respectively fixed to the frame. A side bracket 2 9 is fixed to one end of the support frame 2 close to the guide shaft 7, and one end of the side bracket away from the support frame 2 is fixed to a slider 10. The guide shaft 7 passes through the slider 10, and a through hole is provided on the slider 10 for the guide shaft 7 to pass through.

[0021] A sand suction frame 13 is provided in the support frame 2. The sand suction frame 13 is fixed to the heat insulation board 3 by U-bolts. Sand suction holes 1313 of different sizes are provided on the sand suction frame 13. The sand suction frame 13 is fixed to the hose 12 by the clamp 11. The hose 12 is connected to the vacuum box 14. The vacuum box 14 is connected to the vacuum pump through a connecting pipe. The connecting pipe is composed of a transition pipe 15 and a vacuum pipe. One end of the transition pipe 15 is connected to the vacuum box 14, and the other end is connected to an interface of the automatic three-way ball valve 17. The other interface of the automatic three-way ball valve 17 is connected to the vacuum pipe through a connecting flange 18. The vacuum pipe is connected to the vacuum pump. The remaining interface of the automatic three-way ball valve 17 is open and connected to the atmosphere. The automatic three-way ball valve 17 is installed with a solenoid valve 16.

[0022] The sand suction frame 13 includes two symmetrically arranged straight steel pipes 1301 and two symmetrically arranged straight steel pipes 2 1302. The straight steel pipes 1301 and 1302 are arranged vertically. The straight steel pipes 1301 and 1302 are connected to the straight steel pipes 2 1302 through the bent steel pipes 1303. All the straight steel pipes 1301 and the straight steel pipes 2 1302 and the bent steel pipes 1303 form a frame. One of the straight steel pipes 1301 is fixedly connected to the welding elbow 1314, and the welding elbow 1314 is fixed to the pagoda joint 1315. The pagoda joint 1315 is fixed to the hose 12 through the clamp 11. One end of the straight steel pipe 1301 and the straight steel pipe 2 1302 is fixed with one or more copper pipes 1304, and the copper pipes 1304 are fixed to the inner wall of the sand suction frame. The sand absorption frame 13 also includes more than two connecting steel pipes 1305 respectively fixed at the lower ends of the straight steel pipe 1 1301 and the straight steel pipe 2 1302. The connecting steel pipe 1305 at the lower end of the straight steel pipe 1 1301 connected to the welding elbow 1314 is respectively connected to the sand absorption steel pipe 1 1306. The sand absorption steel pipe 1 1306 is vertically arranged with the straight steel pipe 1 1301. The connecting steel pipe 1 1305 at the lower ends of the straight steel pipe 2 1302 and another straight steel pipe 1 1301 are respectively connected to the sand absorption steel pipe 2 1307. The sand absorption steel pipe 2 1307 is arranged parallel to the straight steel pipe 1 1301 and the straight steel pipe 2 1302 respectively above it. The sand absorption steel pipe 2 1307 below the straight steel pipe 2 1302 is respectively connected to the sand absorption steel pipe 3 1309 through the connecting steel pipe 2 1308. The opposite ends of the sand absorbing steel pipe 2 1307 are respectively fixed with transverse steel pipes 1310, and the transverse steel pipes 1310 are arranged vertically with the straight steel pipe 2 1302, and the lower ends of the transverse steel pipes 1310 are fixed with the vertical steel pipes 1311. The two ends of the sand absorbing steel pipe 1 1306, the two ends of the sand absorbing steel pipe 2 1307, the two ends of the sand absorbing steel pipe 3 1309, and one end of the transverse steel pipe 1310 are respectively fixed with sealing plates 1312, and the sealing plates 1312, the copper pipe 1304, and the sand absorbing holes 1313 are respectively arranged on the straight steel pipe 1 1301, the straight steel pipe 2 1302, the sand absorbing steel pipe 1 1306, the sand absorbing steel pipe 2 1307, and the sand absorbing steel pipe 3 1309.

[0023] Working principle: When the cylinder 4 works, the support frame 2 falls onto the mold 1 under the guidance of the guide shaft 7. The function of the support frame 2 is to effectively restrict the coated sand. The coated sand falls into the support frame 2 and completely buries the mold 1. Under the action of high temperature, the coated sand on the surface of the mold 1 quickly solidifies and forms a hard shell. At the same time, the temperature of the mold 1 will also drop rapidly during the crusting process. The coated sand far away from the surface of the mold 1 will not form a hard shell because it cannot get enough heat, and will form floating sand.

[0024] The vacuum pump is in a normally open state, the automatic three-way ball valve 17 is in a normally closed state, the vacuum tube is closed, and the vacuum box 14 is connected to the atmosphere through an interface of the automatic three-way ball valve 17. The electromagnetic valve 16 works, so that the interface of the automatic three-way ball valve 17 connected to the atmosphere is closed and the interface connected to the vacuum tube is opened, so that the vacuum pump is connected to the vacuum box 14 through the vacuum tube and the transition tube 15, and the air in the vacuum box 14 is instantly discharged through the transition tube 15 and the automatic three-way ball valve 17 to form a negative pressure. The vacuum box 14 is connected to the sand suction frame 13 through the hose 12. Under the action of negative pressure, the floating sand enters the vacuum box 14 through the sand suction hole 1313, the sand suction frame 13, and the sand suction pipeline 12. Under the action of gravity, the sand falls to the bottom of the vacuum box 14 to achieve the sand suction function. After the sand suction is completed, the electromagnetic valve 16 works, so that the automatic three-way ball valve 17 closes the connection between the vacuum box and the vacuum pump, and at the same time connects the connection between the vacuum box and the atmosphere, and the vacuum box is instantly depressurized. Among them, the special profiling design of the sand suction frame 13, the design of multiple sand suction holes 1313, the layout of the sand suction holes 1313 adapted to the airflow and the design of the hole size enable the floating sand to be cleaned up synchronously and quickly at multiple points, thereby preventing the floating sand from being softened or even crusted.

[0025] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the present invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A sand suction device for shell production using coated sand, characterized in that: It comprises a mold fixed on a frame, a support frame is provided at the upper end of the mold, a heat insulation board is fixed on the inner wall of the support frame, the support frame is connected to a lifting mechanism, the lifting mechanism is used to drive the support frame to move in a vertical direction, a sand suction frame is provided in the support frame, the sand suction frame is fixed on the heat insulation board, the sand suction frame is provided with sand suction holes of different sizes, the sand suction frame is fixed to a hose through a clamp, the hose is connected to a vacuum box, and the vacuum box is connected to a vacuum pump through a connecting pipe; The sand suction frame includes two symmetrically arranged straight steel pipes 1 and two symmetrically arranged straight steel pipes 2, the straight steel pipe 1 and the straight steel pipe 2 are arranged vertically, the straight steel pipe 1 is connected to the straight steel pipe 2 through a bent steel pipe, all the straight steel pipes 1, the straight steel pipe 2 and the bent steel pipe form a frame, one of the straight steel pipes 1 is fixedly connected to a welding elbow, the welding elbow is fixed to a pagoda joint, the pagoda joint is fixed to a hose through a clamp, and one end of the straight steel pipe 1 and the straight steel pipe 2 is respectively fixed with one or more copper pipes; The sand absorption frame also includes a connecting steel pipe 1 fixed at the lower ends of the straight steel pipe 1 and the straight steel pipe 2, a connecting steel pipe 1 at a lower end of the straight steel pipe connected to the welding elbow is respectively communicated with the sand absorption steel pipe 1, the straight steel pipe 2 and the connecting steel pipe 1 at the lower end of another straight steel pipe are respectively communicated with the sand absorption steel pipe 2, the sand absorption steel pipe 2 below the straight steel pipe 2 is respectively communicated with the sand absorption steel pipe 3 through the connecting steel pipe 2, the opposite ends of the sand absorption steel pipe 2 are respectively fixed with transverse steel pipes, the lower ends of the transverse steel pipes are fixed with the vertical steel pipe, the two ends of the sand absorption steel pipe 1, the two ends of the sand absorption steel pipe 2, the two ends of the sand absorption steel pipe 3, and one end of the transverse steel pipe are respectively fixed with sealing plates, and the sand absorption holes are respectively arranged on the sealing plate, the copper pipe, the straight steel pipe 1, the straight steel pipe 2, the sand absorption steel pipe 1, the sand absorption steel pipe 2, and the sand absorption steel pipe 3; The support frame is formed by four support plates being fixedly enclosed.

2. A sand suction device for shell production using coated sand according to claim 1, characterized in that: The lifting mechanism includes a cylinder arranged on both sides of the support frame, the upper end of the cylinder is fixed to the mounting bracket, the mounting bracket is fixed on the frame, the two ends of the support frame close to the cylinder are respectively fixed with side brackets one, and the piston rod of the cylinder is fixed to the side bracket one.

3. The sand suction device for shell production using coated sand according to claim 2 is characterized by: The lifting mechanism also includes guide shafts symmetrically arranged on both sides of the support frame, the upper and lower ends of the guide shafts are respectively fixed to fixed supports, the fixed supports are respectively fixed to the frame, and a side bracket 2 is fixed to one end of the support frame close to the guide shaft, and the end of the side bracket away from the support frame is fixed to the slider, and the guide shaft passes through the slider.

4. The sand suction device for shell production using coated sand according to claim 1 is characterized by: The sand suction frame is fixed on the heat insulation board by U-shaped bolts.

Images