Pouring drainage method for stainless steel propeller

Abstract

The invention relates to the technical field of propeller preparation, in particular to a pouring drainage method for a stainless steel propeller, which comprises a base, a support frame is arranged on the upper end surface of the base, a liquid storage barrel is arranged at the top of the support frame, a bottom plate is arranged at the bottom of the liquid storage barrel, and a sliding nozzle is formed in the bottom of the bottom plate. A mold is arranged on the base, a buffer plate is arranged at the top of the mold, a liquid injection opening is formed in the buffer plate, a buffer groove is formed in the outer side of the liquid injection opening, a drainage cap is arranged at the top of the liquid injection opening, and a conveying device for conveying drainage sand into the first through hole is arranged on the bottom plate. The method has the advantages that the whole pouring process can be realized only by opening and closing the sliding nozzle once, and the tedious processes of releasing stuffing sand into a slag groove, closing the sliding nozzle after releasing the stuffing sand, transferring a pouring ladle to a pouring cup and then opening the sliding nozzle for pouring in the prior art are omitted.

Description

Technical Field

[0001] The invention relates to the technical field of propeller preparation, and in particular to a casting and drainage method for a stainless steel propeller. Background Art

[0002] At present, the domestic production of copper alloy propellers is mostly based on the pouring process, which generally uses the method of flipping the ladle into the pouring cup for pouring. The pouring and resetting of the ladle are completed by the personnel operating the motor control on the ladle. The process is relatively simple and has a low risk factor, but this method is not suitable for the pouring of stainless steel propellers. In the field of non-propeller production of stainless steel parts, sliding gate type leaking ladle is generally used for pouring. The operation process is to prepare a slag trough near the pouring cup in advance, first operate the crane to transfer the sliding gate type leaking ladle to the slag trough position, and then manually (or hydraulically control) open the sliding gate to allow the drainage sand in the gate to flow out first. After seeing the molten steel flowing out, the operator (or hydraulically controlled) immediately closes the sliding gate, and then the crane transfers the ladle to the top of the pouring cup. The operator aligns the pouring cup and manually (or hydraulically controlled) opens the sliding gate again for pouring. After the pouring is completed, the sliding gate needs to be closed manually (or hydraulically controlled) and the ladle is transferred to complete the pouring operation.

[0003] The sliding nozzle is small in size, and multiple opening and closing can easily cause the molten steel in the sliding nozzle to cool down and solidify rapidly, resulting in failure of the sliding nozzle opening and closing. In severe cases, it will directly lead to failure of the casting process. Summary of the invention

[0004] The purpose of the present invention is to solve the above problems and to propose a casting and drainage method for a stainless steel propeller.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A casting and drainage device for a stainless steel propeller comprises a base, an upper end surface of the base is provided with a support frame, a liquid storage barrel is provided on the top of the support frame, a bottom plate is provided at the bottom of the liquid storage barrel, a sliding water outlet is provided at the bottom of the bottom plate, a mold is provided on the base, a buffer plate is provided on the top of the mold, a liquid injection port is provided on the buffer plate, a buffer groove is provided on the outer side of the liquid injection port, a drainage cap is provided on the top of the liquid injection port, and a feeding device for conveying drainage sand into a first through hole is provided on the bottom plate.

[0007] Preferably, the sliding water outlet includes a second closing plate arranged at the bottom of the bottom plate, the second closing plate is fixedly connected to the bottom plate through a fixing seat, a first closing plate is arranged between the second closing plate and the bottom plate, the first closing plate and the bottom plate are slidingly connected, a first through hole is opened on the first closing plate, a second through hole is opened on the second closing plate, a liquid outlet is arranged at the bottom of the second closing plate, and a transmission assembly for controlling the movement of the first closing plate is arranged on the side of the liquid storage barrel.

[0008] Preferably, the transmission assembly includes a limit seat fixedly connected to the side wall of the liquid storage barrel, a cylinder is provided on the side of the limit seat, and an output end of the cylinder is fixedly connected to the first closing plate.

[0009] Preferably, a slide groove is provided on the lower end surface of the bottom plate, and a slide seat is provided on the first closing plate, and the slide seat is slidably connected to the slide groove.

[0010] Preferably, the feeding device includes a feed barrel at the bottom of the base plate, a drive motor is arranged on one side of the feed barrel, the output end of the drive motor extends into the feed barrel and is connected to a stirring rod, a spiral blade is arranged on the stirring rod, a feed port is arranged at one end of the feed barrel, and a discharge port is arranged at the other end of the feed barrel.

[0011] Preferably, a method for pouring and draining a stainless steel propeller, using the pouring and draining device according to claim 5, comprises the following steps:

[0012] S1: Now place the mold on the base, place the buffer plate on the upper end surface of the mold, and align the injection port with the liquid inlet of the mold;

[0013] S2: Place the drainage cap above the injection port and align the drainage cap with the liquid outlet;

[0014] S3: injecting drainage sand into the first through hole through the feeding device;

[0015] S4: Add an appropriate amount of molten metal into the liquid storage barrel;

[0016] S5: The cylinder works to pull the first closing plate to move, and stops when the first through hole is aligned with the second through hole;

[0017] S6: The drainage sand and the molten metal slide down onto the drainage cap in sequence.

[0018] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0019] The invention of this scheme is to propose a pouring and drainage method for stainless steel propellers. The advantage of this method is that the whole pouring process can be realized by opening and closing the sliding gate only once, eliminating the cumbersome process of releasing drainage sand into the slag trough first, closing the sliding gate after releasing the drainage sand, transferring the ladle to the pouring cup, and then opening the sliding gate for pouring. At the same time, it also avoids the problem of sliding gate opening and closing failure caused by the pressure of high-temperature molten steel or the solidification of molten steel inside the sliding gate. In addition, it can also buffer the splashing of high-temperature molten steel, ensure the safety of operators, and complete the pouring operation quickly, conveniently and smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic side view of a drainage device provided according to an embodiment of the present invention is shown.

[0021] Figure 2 A schematic top view of a drainage device provided according to an embodiment of the present invention is shown.

[0022] Figure 3 The embodiment of the present invention provides Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0023] Figure 4 A cross-sectional schematic diagram of a drainage device provided according to an embodiment of the present invention is shown.

[0024] Figure 5 The embodiment of the present invention provides Figure 4 Schematic diagram of the enlarged structure at point B in the middle.

[0025] Figure 6 A schematic diagram of the cross-sectional structure of a sliding gate provided according to an embodiment of the present invention is shown.

[0026] Legend:

[0027] 1. Base; 2. Support frame; 3. Liquid storage barrel; 4. Bottom plate; 5. Slide groove; 6. Slide seat; 7. First closing plate; 8. Second closing plate; 9. Fixed seat; 10. Limit seat; 11. Cylinder; 12. Liquid outlet; 13. Feed barrel; 14. Drive motor; 15. Stirring rod; 16. Spiral blade; 17. Feed port; 18. Discharge port; 19. Mold; 20. Buffer plate; 21. Drainage cap; 22. Buffer groove; 23. Liquid injection port; 24. First through hole; 25. Second through hole. DETAILED DESCRIPTION

[0028] 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.

[0029] See also Figure 1-6 , the present invention provides a technical solution:

[0030] A pouring and drainage device for a stainless steel propeller comprises a base 1, a support frame 2 is arranged on the upper end surface of the base 1, a liquid storage barrel 3 is arranged on the top of the support frame 2, a bottom plate 4 is arranged at the bottom of the liquid storage barrel 3, a sliding water port is arranged at the bottom of the bottom plate 4, a mold 19 is arranged on the base 1, a buffer plate 20 is arranged on the top of the mold 19, a liquid injection port 23 is opened on the buffer plate 20, a buffer groove 22 is opened on the outer side of the liquid injection port 23, a drainage cap 21 is arranged on the top of the liquid injection port 23, and a feeding device for conveying drainage sand into a first through hole 24 is arranged on the bottom plate 4; the material of the drainage cap 21 is selected from easily fusible substances, such as paraffin, and the drainage sand is preferably poured into the bottom plate 4. The flow cap 21 is preferably conical, the drainage cap 21 is replaceable, and the device is reusable. The buffer groove 22 is an annular groove distributed along the injection port 23. When pouring begins, the drainage sand first flows out of the sliding water outlet, then drips on the drainage cap 21, and then slides into the buffer groove 22. When the drainage sand flows out, the molten metal will continue to fall on the drainage cap 21. Before the drainage cap 21 melts, the molten metal will slide along the drainage cap 21 onto the drainage sand, which can prevent the molten metal from splashing excessively. When the drainage cap 21 melts, the molten metal will enter the mold 19 through the injection port 23 to start the manufacture of the blades.

[0031] Specifically, Figure 3 and Figure 6As shown, the sliding water outlet includes a second closing plate 8 arranged at the bottom of the bottom plate 4, the second closing plate 8 is fixedly connected to the bottom plate 4 through a fixing seat 9, a first closing plate 7 is arranged between the second closing plate 8 and the bottom plate 4, the first closing plate 7 is slidably connected to the bottom plate 4, a first through hole 24 is opened on the first closing plate 7, a second through hole 25 is opened on the second closing plate 8, a liquid outlet 12 is arranged at the bottom of the second closing plate 8, a transmission assembly for controlling the movement of the first closing plate 7 is arranged on the side of the liquid storage barrel 3, the transmission assembly includes a limit seat 10 fixedly connected to the side wall of the liquid storage barrel 3, a cylinder 11 is arranged on the side of the limit seat 10, and the cylinder The output end of 11 is fixedly connected to the first closing plate 7, the lower end surface of the bottom plate 4 is provided with a slide groove 5, the first closing plate 7 is provided with a slide seat 6, and the slide seat 6 is slidably connected to the slide groove 5; under normal conditions, the first through hole 24 and the second through hole 25 are staggered, and the first through hole 24 is filled with drainage sand. When the liquid storage barrel 3 is filled with molten metal and the blade begins to be cast, the cylinder 11 is started, and the cylinder 11 pulls the first closing plate 7 to slide until the first through hole 24 coincides with the second through hole 25, and then the drainage sand will flow out from the channel formed by the first through hole 24, the second through hole 25 and the liquid outlet 12, and the drainage sand will fall on the drainage cap 21 after flowing out.

[0032] Specifically, Figure 4 and Figure 5 As shown, the feeding device includes a feed barrel 13 at the bottom of the base plate 4, a drive motor 14 is arranged on one side of the feed barrel 13, the output end of the drive motor 14 extends into the feed barrel 13 and is connected to a stirring rod 15, a spiral blade 16 is arranged on the stirring rod 15, a feed port 17 is arranged at one end of the feed barrel 13, and a discharge port 18 is arranged at the other end of the feed barrel 13; when drainage sand needs to be injected into the first through hole 24, the drive motor 14 is started, and the drive motor 14 drives the spiral blade 16 to rotate through the stirring rod 15, and then the drainage sand is injected into the feed barrel 13 through the feed port 17, and under the action of the spiral blade 16, the drainage sand falls into the first through hole 24 through the discharge port 18 to prepare for the casting of the paddle blades.

[0033] A casting and drainage method for a stainless steel propeller comprises the following steps:

[0034] S1: Now place the mold 19 on the base 1, place the buffer plate 20 on the upper end surface of the mold 19, and align the injection port 23 with the liquid inlet of the mold 19;

[0035] S2: placing the drainage cap 21 above the liquid injection port 23 and aligning the drainage cap 21 with the liquid outlet 12;

[0036] S3: injecting drainage sand into the first through hole 24 through the feeding device;

[0037] S4: Add an appropriate amount of molten metal into the liquid storage barrel 3;

[0038] S5: The cylinder 11 works to pull the first closing plate 7 to move, and stops when the first through hole 24 is aligned with the second through hole 25;

[0039] S6: The drainage sand and the molten metal slide down onto the drainage cap 21 in sequence.

[0040] In summary, the present embodiment provides a method for pouring and draining a stainless steel propeller. When it is necessary to start pouring the blades, first align the liquid outlet 12 with the liquid injection port 23, start the drive motor 14, and drive the spiral blade 16 to rotate through the stirring rod 15. Then, the drainage sand is injected into the feed barrel 13 through the feed port 17. Under the action of the spiral blade 16, the drainage sand falls into the first through hole 24 through the discharge port 18. After the liquid metal is injected into the liquid storage barrel 3, the cylinder 11 is started, and the cylinder 11 pulls the first closing plate 7 to slide until the first closing plate 7 is opened. A through hole 24 overlaps with the second through hole 25, and then the drainage sand will flow out from the channel formed by the first through hole 24, the second through hole 25 and the liquid outlet 12. After flowing out, the drainage sand will fall on the drainage cap 21, and then slide into the buffer tank 22. When the drainage sand flows out, the molten metal will continue to fall on the drainage cap 21. Before the drainage cap 21 melts, the molten metal will slide along the drainage cap 21 and fall on the drainage sand. This can prevent the molten metal from splashing excessively. When the drainage cap 21 melts, the molten metal will enter the mold 19 through the injection port 23 to start the manufacture of the blades.

[0041] The above description of the embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A pouring and drainage device for a stainless steel propeller, comprising a base (1), a support frame (2) being arranged on the upper end surface of the base (1), a liquid storage barrel (3) being arranged on the top of the support frame (2), characterized in that: The bottom of the liquid storage barrel (3) is provided with a bottom plate (4), the bottom of the bottom plate (4) is provided with a sliding water outlet, the base (1) is provided with a mold (19), the top of the mold (19) is provided with a buffer plate (20), the buffer plate (20) is provided with a liquid injection port (23), the outer side of the liquid injection port (23) is provided with a buffer groove (22), the top of the liquid injection port (23) is provided with a drainage cap (21), and the bottom plate (4) is provided with a feeding device for feeding drainage sand into the first through hole (24).

2. A casting and drainage device for a stainless steel propeller according to claim 1, characterized in that: The sliding water outlet comprises a second closing plate (8) arranged at the bottom of the bottom plate (4); the second closing plate (8) is fixedly connected to the bottom plate (4) via a fixing seat (9); a first closing plate (7) is arranged between the second closing plate (8) and the bottom plate (4); the first closing plate (7) is slidably connected to the bottom plate (4); a first through hole (24) is provided on the first closing plate (7); a second through hole (25) is provided on the second closing plate (8); a liquid outlet (12) is provided at the bottom of the second closing plate (8); and a transmission component for controlling the movement of the first closing plate (7) is provided on the side of the liquid storage barrel (3).

3. A casting and drainage device for a stainless steel propeller according to claim 2, characterized in that: The transmission assembly comprises a limit seat (10) fixedly connected to the side wall of the liquid storage barrel (3), a cylinder (11) is arranged on the side of the limit seat (10), and an output end of the cylinder (11) is fixedly connected to the first closing plate (7).

4. A casting and drainage device for a stainless steel propeller according to claim 3, characterized in that: A sliding groove (5) is provided on the lower end surface of the bottom plate (4), and a sliding seat (6) is provided on the first closing plate (7), and the sliding seat (6) is slidably connected to the sliding groove (5).

5. A casting and drainage device for a stainless steel propeller according to claim 4, characterized in that: The feeding device comprises a feeding barrel (13) at the bottom of the base plate (4), a driving motor (14) is arranged on one side of the feeding barrel (13), an output end of the driving motor (14) extends into the feeding barrel (13) and is connected to a stirring rod (15), a spiral blade (16) is arranged on the stirring rod (15), a feeding port (17) is arranged at one end of the feeding barrel (13), and a discharging port (18) is arranged at the other end of the feeding barrel (13).

6. A method for pouring and draining a stainless steel propeller, using the pouring and draining device according to claim 5, characterized in that: The following steps are involved: S1: Now place the mold (19) on the base (1), place the buffer plate (20) on the upper end surface of the mold (19), and align the injection port (23) with the liquid inlet of the mold (19); S2: placing the drainage cap (21) above the liquid injection port (23) and aligning the drainage cap (21) with the liquid outlet (12); S3: injecting drainage sand into the first through hole (24) through the feeding device; S4: adding an appropriate amount of molten metal to the liquid storage barrel (3); S5: the cylinder (11) works to pull the first closing plate (7) to move, and stops when the first through hole (24) is aligned with the second through hole (25); S6: The drainage sand and the molten metal slide down onto the drainage cap (21) in sequence.

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