Lost foam drying device

Abstract

The utility model discloses an evanescent mode drying device which comprises a drying box and a heating furnace, a feeding port is formed in one end of the drying box, a box door capable of being opened and closed in one direction is arranged on the outer side of the feeding port, and the heating furnace communicated with the interior of the drying box is arranged on the top face, away from the feeding port, of the drying box. A plurality of heating pipes are arranged in the heating furnace at equal intervals, an air bellow is arranged on the side wall below the feeding opening of the drying box, and fans are symmetrically arranged in the air bellow; by means of the rotatable moving structure, the evaporative pattern can be driven to move while rotating during drying, the evaporative pattern is more uniform during drying, the evaporative pattern can be dried and shaped firstly and then subjected to air drying in a matched mode in cooperation with the wind direction design, the dried and shaped evaporative pattern can be cooled during air drying, the drying effect is guaranteed, and the drying efficiency is improved. And the practicability of the drying device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of drying devices, in particular to a lost foam drying device. Background Art

[0002] Lost foam casting is a new casting method that combines paraffin or foam models with similar size and shape to the casting into a model cluster, brushes refractory material and dries it, buries it in dry quartz sand for vibration molding, and pours it under negative pressure to vaporize the model. The liquid metal occupies the position of the model, and forms the casting after solidification and cooling. The role of the coating is to prevent the high-temperature molten metal from contacting the mold. If the coating cracks and bubbles or is not dried, back spray will occur during pouring, and pores and slag holes will appear after cooling and molding. For this reason, the coating needs to be dried after brushing.

[0003] In traditional drying devices, most of them directly place the lost foam on a tray during drying. For wrapped coatings, the flat surface that can be used for placement is limited, and it is easy to be placed unstable. It is easy to cause damage to the coating after tipping over. In addition, the contact surface of the lost foam is fixed after placement. When the external drying heating and air outlet direction are fixed, the outer surface of the lost foam is heated unevenly after arrangement, that is, the coating is heated and blown unevenly, which easily leads to incomplete drying of the coating or cracking and bubbles. For this reason, we propose a lost foam drying device. Utility Model Content

[0004] The problem to be solved by the utility model is that the lost foam drying device in the prior art dries the lost foam unevenly.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a lost foam drying device, comprising a drying box and a heating furnace, a feed port is provided at one end of the drying box, and a one-way opening and closing box door is provided on the outer side of the feed port, a heating furnace which is connected to the interior of the drying box is provided on the top surface of the drying box away from the feed port, and a plurality of heating pipes are equidistantly provided inside the heating furnace, a bellows is provided on the side wall below the feed port of the drying box, and fans are symmetrically provided inside the bellows, a filtering air inlet with a filter fixed thereon is provided on the side of the bellows away from the drying box, a moving mechanism is provided inside the drying box, and a plurality of fixing components for fixing the lost foam are equidistantly provided on the moving mechanism, and an insulation board for heat insulation is fixed inside the drying box above the bellows.

[0006] As a preferred embodiment of the lost foam drying device of the present utility model, wherein: the moving mechanism includes gears and chains. Motors are arranged on the front and rear sides of the drying box. Rotating shafts are rotatably connected to the four corners on the front and rear sides of the drying box through bearings. One rotating shaft on each side is fixed on the output shaft of the motor. A pulley is fixed on each rotating shaft. The four pulleys on each side are connected by a transmission belt. One end of each rotating shaft penetrating into the interior of the drying box is fixed with a gear. Chains are meshed and driven on the outside of the four gears on each side. A number of fixing components are equidistantly connected to the two chains.

[0007] As a preferred embodiment of the lost foam drying device of the present utility model, wherein: the fixing component includes a fixed insertion rod. A number of fixing plates are equidistantly fixed on each chain. On the side of each fixing plate away from the gear, two fixing screws are symmetrically fixed. An installation plate is sleeved on each fixing screw. Nuts are threadedly sleeved on the ends of the fixing screws penetrating to the outside of the installation plate. A rotating connecting rod is rotatably connected to the center position of each installation plate through a bearing. A support plate is fixed to the end of the rotating connecting rod away from the gear. A moving block is symmetrically and slidably sleeved inside each support plate. One end of the moving block away from the gear extends to the outside of the support plate and is fixed with a fixed insertion rod. A fixing screw is fixed to the other end of each moving block. Nuts are threadedly sleeved on the ends of the fixing screws extending to the outside of the support plate.

[0008] As a preferred embodiment of the lost foam drying device of the present utility model, wherein: the heat insulation plate is located between the upper and lower gears. The length of the heat insulation plate is less than the length inside the chain. The air outlet of the box door is aligned with the lower gear.

[0009] As a preferred embodiment of the lost foam drying device of the present utility model, wherein: each fixing plate is set in an "L" shape. A rotating hole for cooperating with the rotating connecting rod is opened at the center position of each fixing plate. A fixing hole for cooperating with the fixing screw is opened inside each installation plate.

[0010] As a preferred embodiment of the lost foam drying device of the present utility model, wherein: a rectangular sliding groove for cooperating with the moving block is opened inside each support plate to adjust the distance between each group of two fixed insertion rods. The height of the end of each fixed insertion rod and the nut is greater than the height of the rectangular sliding groove.

[0011] As a preferred solution of the lost foam drying device described in the present utility model, the following is provided: each of the fixed insertion rods is arranged in a horizontal "T" shape, and the end of the fixed insertion rod away from the support plate is arranged in a conical shape. Anti-slip pads are adhesively fixed to the inner sides of the straight horizontal line segments of the outer limiting rails, and the rotating connecting rod is slidably inserted inside the limiting rails on both inner walls of the drying box.

[0012] The beneficial effects of the present utility model are as follows: through the rotatable moving structure, during drying, the lost foam can be driven to move and rotate simultaneously, making the drying of the lost foam more uniform. Combined with the wind direction design, the lost foam can be dried and shaped first, and then enter the air drying process. During air drying, the dried and shaped lost foam can be cooled, ensuring the drying effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. Among them:

[0014] Figure 1 It is an overall structure diagram of a lost foam drying device.

[0015] Figure 2 It is a structure diagram of a lost foam drying device after being opened.

[0016] Figure 3 It is an internal structure diagram of a lost foam drying device.

[0017] Figure 4 It is a partial structure diagram of a lost foam drying device.

[0018] Figure 5 It is a schematic diagram of the cooperation between the fixed plate and the fixing component in a lost foam drying device. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following will specifically introduce the present utility model in combination with the drawings and embodiments.

[0020] Refer to Figures 1 to 5, this embodiment is a lost foam drying device, including a drying box 1 and a heating furnace 2. One end of the drying box 1 is provided with a feed inlet, and a one-way opening and closing box door 5 is arranged outside the feed inlet. The top surface of the drying box 1 far from the feed inlet is provided with a heating furnace 2 communicating with the inside of the drying box 1, and a number of heating tubes are equidistantly arranged inside the heating furnace 2. A wind box 3 is arranged on the side wall below the feed inlet of the drying box 1, and fans are symmetrically arranged inside the wind box 3. A filter air inlet 4 fixed with a filter screen is arranged on one side of the wind box 3 far from the drying box 1. A moving mechanism is arranged inside the drying box 1, and a number of fixing components for fixing the lost foam are equidistantly arranged on the moving mechanism. A heat insulation board 21 for heat insulation is fixed inside the drying box 1 above the wind box 3.

[0021] In this embodiment, the moving mechanism includes a gear 8 and a chain 9. Motors 6 are arranged on the front and rear sides of the drying box 1. Rotating shafts 7 are rotatably connected through bearings at the four corners on the front and rear sides of the drying box 1. One rotating shaft 7 on each side is fixed on the output shaft of the motor 6. A pulley 10 is fixed on each rotating shaft 7. Four pulleys 10 on each side are connected by a transmission belt 11. One end of each rotating shaft 7 passing through to the inside of the drying box 1 is fixed with a gear 8. A chain 9 is meshed and driven on the outside of the four gears 8 on each side. A number of fixing components are equidistantly connected on the two chains 9.

[0022] In this embodiment, the fixing component includes a fixing plug 17. A number of fixing plates 12 are equidistantly fixed on each chain 9. On the side of each fixing plate 12 far from the gear 8, fixing screw rods two 22 are symmetrically fixed, and mounting plates 13 are sleeved on the fixing screw rods two 22. Nuts are threadedly sleeved on the ends of the fixing screw rods two 22 passing through to the outside of the mounting plates 13. A rotating connecting rod 14 is rotatably connected through a bearing at the central position of each mounting plate 13, and a support plate 15 is fixed at the end of the rotating connecting rod 14 far from the gear 8. A moving block 16 is symmetrically and slidably sleeved inside each support plate 15, and the end of the moving block 16 far from the gear 8 extends to the outside of the support plate 15 and is fixed with a fixing plug 17. A fixing screw rod one 18 is fixed at the other end of each moving block 16, and nuts are threadedly sleeved on the ends of the fixing screw rod one 18 extending to the outside of the support plate 15.

[0023] In this embodiment, the heat insulation board 21 is located between the upper and lower gears 8. The length of the heat insulation board 21 is less than the length inside the chain 9. The air outlet of the box door 5 is aligned with the lower gear 8, so that the box door 5 can air-dry and cool the lost foam after drying. The blown air flows along the gap between the heat insulation board 21 and the drying box 1 away from the feed inlet to the upper part of the heat insulation board 21 to assist in drying, and the air flow is weaker when it reaches the upper part of the heat insulation board 21, avoiding the deformation of the coating on the surface of the just-entered lost foam due to excessive wind force.

[0024] In this embodiment, each fixing plate 12 is set to be "L"-shaped. A rotating hole for cooperating with the rotating connecting rod 14 is formed at the center position of each fixing plate 12. A fixing hole for cooperating with the fixing screw two 22 is formed inside each mounting plate 13, which is convenient for the fixing plate 12 to support the mounting plate 13 and also convenient for the fixing and disassembly between the fixing plate 12 and the mounting plate 13.

[0025] In this embodiment, a rectangular sliding groove for cooperating with the moving block 16 is formed inside each support plate 15, which is used to adjust the distance between each group of two fixing insertion rods 17. The height of the end part of each fixing insertion rod 17 and the nut is greater than the height of the rectangular sliding groove, and the distance between the two fixing insertion rods 17 can be adjusted according to the volume of the lost foam pattern to ensure the stability after the lost foam pattern is fixed.

[0026] In this embodiment, each fixing insertion rod 17 is set to be "T"-shaped placed horizontally, and the end of the fixing insertion rod 17 away from the support plate 15 is set to be conical. Limit rails 19 are fixed on the inner walls of both sides of the drying box 1 of the rotating connecting rod 14, and the rotating connecting rod 14 is slidably inserted inside the limit rails 19. Anti-slip pads 20 are adhesively fixed on the inner sides of the straight and horizontal line segments of the outer limit rails 19. The rotating connecting rod 14 is driven to rotate through the anti-slip pads 20, so as to ensure that the lost foam pattern can rotate stably on the straight and horizontal line segments, thereby further ensuring the heat uniformity.

[0027] Working principle: When drying, open the box door 5. Adjust the distance between the two fixed insertion rods 17 according to the size of the lost foam pattern. When adjusting, turn the nut to release the clamping and fixing of the fixed insertion rod 17 and the nut on the support plate 15, then the fixed insertion rod 17 can be moved to drive the moving block 16 to slide inside the support plate 15. After the adjustment is completed, turn the nut to make the nut cooperate with the fixed insertion rod 17 to clamp the mounting plate 13 again. Then turn on the heating furnace 2, the motor 6 and the air box 3. The motor 6 runs to drive the rotating shaft 7 to rotate. When the rotating shaft 7 rotates, it drives the transmission belt 11 to move through the pulley 10 on its outer side. The transmission belt 11 then drives the other rotating shafts 7 to rotate through the pulley 10, so as to drive the four rotating shafts 7 on each side to rotate synchronously. The rotating shaft 7 drives the gear 8 to rotate, which can drive the chain 9 to move. When the fixed insertion rod 17 moves to the feeding port, align the lost foam pattern to be dried and sleeved on the fixed insertion rod 17, so that the fixed insertion rod 17 is inserted into the lost foam pattern, and the lost foam pattern can be fixed on the fixed insertion rod 17. The chain 9 drives the lost foam pattern to move below the heating furnace 2, and then it can be heated and dried by the heating furnace 2. The dried lost foam pattern moves to the lower part of the heat insulation plate 21 driven by the chain 9. At the same time, the air box 3 at the bottom sucks in external air and blows it into the drying box 1, so as to cool the dried lost foam pattern below the heat insulation plate 21. The hot air after cooling flows to the upper part of the heat insulation plate 21 through the gap between the heat insulation plate 21 and the drying box 1 under the guidance of the heat insulation plate 21, so as to assist in drying the lost foam pattern below the heating furnace 2. When the rotating connecting rod 14 moves to the position of the anti-slip pad 20, under the action of the friction force of the anti-slip pad 20 and the drive of the chain 9, the rotating connecting rod 14 rotates stably while moving. When the lower lost foam pattern moves to the discharging port, the cooling is completed, and it can be directly removed from the fixed insertion rod 17. After removal, a new lost foam pattern to be dried can be inserted onto the idle fixed insertion rod 17.

[0028] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A lost foam drying device, characterized in that: The invention comprises a drying box (1) and a heating furnace (2), wherein a feed port is provided at one end of the drying box (1), and a one-way opening and closing box door (5) is provided outside the feed port, a heating furnace (2) which is connected to the inside of the drying box (1) is provided on the top surface of the drying box (1) away from the feed port, and a plurality of heating pipes are equidistantly provided inside the heating furnace (2), a wind box (3) is provided on the side wall below the feed port of the drying box (1), and a fan is symmetrically provided inside the wind box (3), a filtering air inlet (4) fixed with a filter screen is provided on the side of the wind box (3) away from the drying box (1), a moving mechanism is provided inside the drying box (1), and a plurality of fixing components for fixing lost foam are equidistantly provided on the moving mechanism, and a heat insulation board (21) for heat insulation is fixed inside the drying box (1) above the wind box (3).

2. The lost foam drying device according to claim 1, characterized in that: The moving mechanism comprises a gear (8) and a chain (9). The front and rear sides of the drying box (1) are both provided with a motor (6). The front and rear corners of the drying box (1) are all rotatably connected to a rotating shaft (7) via bearings. One rotating shaft (7) on each side is fixed to the output shaft of the motor (6). A pulley (10) is fixed to each rotating shaft (7). The four pulleys (10) on each side are connected in transmission via a transmission belt (11). A gear (8) is fixed to one end of each rotating shaft (7) that passes through the interior of the drying box (1). The outer sides of the four gears (8) on each side are meshed and connected in transmission with a chain (9). A plurality of fixed components are equidistantly connected to the two chains (9).

3. A lost foam drying device as claimed in claim 2, characterized in that: The fixing assembly comprises a fixing rod (17), a plurality of fixing plates (12) are fixed at equal distances on each of the chains (9), a fixing screw rod (22) is symmetrically fixed on a side of each of the fixing plates (12) away from the gear (8), and a mounting plate (13) is sleeved on the fixing screw rod (22), a nut is threadedly sleeved on one end of the fixing screw rod (22) that passes through the outer side of the mounting plate (13), and a rotating connection is rotatably connected to the center of each mounting plate (13) via a bearing. The rod (14) is provided with a support plate (15) fixed to one end of the rotating connecting rod (14) away from the gear (8), a moving block (16) is symmetrically slidably sleeved inside each of the support plates (15), and one end of the moving block (16) away from the gear (8) extends to the outside of the support plate (15) and is fixed with a fixed plug rod (17), and the other end of each of the moving blocks (16) is fixed with a fixed screw rod (18), and one end of the fixed screw rod (18) extending to the outside of the support plate (15) is threadedly sleeved with a nut.

4. A lost foam drying device as claimed in claim 2, characterized in that: The heat insulation board (21) is located between the upper and lower gears (8); the length of the heat insulation board (21) is less than the length inside the chain (9); and the air outlet of the box door (5) is aligned with the lower gear (8).

5. The lost foam drying device according to claim 3, characterized in that: Each of the fixing plates (12) is configured in an "L" shape, and a rotation hole cooperating with the rotating connecting rod (14) is provided at the center of each of the fixing plates (12), and a fixing hole cooperating with the second fixing screw (22) is provided inside each of the mounting plates (13).

6. The lost foam drying device according to claim 3, characterized in that: Each of the support plates (15) is provided with a rectangular slot cooperating with the moving block (16) for adjusting the distance between each group of two fixed plug rods (17); the height of the end of each fixed plug rod (17) and the nut is greater than the height of the rectangular slot.

7. The lost foam drying device according to claim 3, characterized in that: Each of the fixed plug rods (17) is arranged in a transverse "T" shape, and the ends of the fixed plug rods (17) away from the support plate (15) are arranged in a conical shape. Limit rails (19) are fixed on the inner walls of the drying box (1) on both sides of the rotating connecting rod (14), and the rotating connecting rod (14) is slidably inserted inside the limit rails (19). Anti-slip pads (20) are glued and fixed to the inner sides of the straight and horizontal line segments of the outer limit rails (19).

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