A double-tube water-cooled metal mold centrifugal pipe casting device

Abstract

The application discloses a double-pipe water-cooled metal mold centrifugal pipe casting device and relates to the technical field of centrifugal pipe casting.The device comprises a supporting frame, a pipe mold is symmetrically connected to the supporting frame in a rotating mode, mounting frames are symmetrically fixedly connected to one side of the supporting frame, feeding hoppers are fixedly connected to the mounting frames, liquid delivery pipes are fixedly connected to the side of the feeding hoppers close to the pipe mold, a metal liquid flow circulation auxiliary mechanism and a liquid pouring auxiliary mechanism are further included, the metal liquid flow circulation auxiliary mechanism comprises a rotating disc and a fixing ring, the rotating disc is rotatably connected to the outer surface of the liquid delivery pipe, the fixing ring is fixedly connected to the outer surface of the liquid delivery pipe, support blocks are fixedly connected to the outer surface of the fixing ring in a ring shape at equal intervals, the support blocks can knock the outer wall of the liquid delivery pipe during the process that the metal liquid is delivered to the inside of the pipe mold through the liquid delivery pipe, the metal solidification layer gradually formed on the pipe wall can be effectively destroyed, the flow passage cross-sectional area can be prevented from being reduced or even completely blocked, the smoothness and continuity of liquid delivery can be continuously maintained, and the pouring process can be ensured to be not interrupted or slowed down due to the blockage of the flow passage.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of centrifugal casting pipe, in particular to a double-pipe water-cooled metal mold centrifugal casting pipe device. BACKGROUND

[0002] The water-cooled metal mold centrifugal casting pipe technology is a kind of equipment that directly pours molten iron into a high-speed rotating metal pipe mold, and makes the molten iron adhere to the inner wall of the pipe mold through centrifugal force, and uses the cooling water on the outer surface of the pipe mold to quickly take away the heat, so that the molten iron solidifies to form a cast pipe.

[0003] When the metal liquid is transported through the pipeline to the inside of the centrifugal casting machine for casting, the molten iron rapidly forms a solidified layer in the pipe due to the chilling effect, resulting in continuous shrinkage of the flow passage cross-sectional area, not only causing the pouring flow to attenuate and the filling time to be prolonged, but also more easily causing fatal defects such as cold shut and insufficient pouring, affecting the smoothness and continuity of the metal liquid in the conveying process, and due to the influence of the solidified layer, the metal liquid in the flow process will have an adhesion tendency with the pipe wall, and is prone to wall-hanging and fouling, affecting the flow rate and flow of the metal liquid.

[0004] Therefore, the present application provides a double-pipe water-cooled metal mold centrifugal casting pipe device to solve the above problems. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application provides a double-pipe water-cooled metal mold centrifugal casting pipe device, which can effectively solve the problems in the prior art.

[0006] To achieve the above-mentioned purpose, the purpose of the present application can be realized by the following technical scheme:

[0007] A double-pipe water-cooled metal mold centrifugal casting pipe device, comprising a support frame, a pipe mold is symmetrically connected to the support frame, a mounting frame is symmetrically fixedly connected to one side of the support frame, a feed hopper is fixedly connected to the mounting frame, and a liquid delivery pipe is fixedly connected to one side of the pipe mold, characterized in that it further comprises a metal liquid flow auxiliary mechanism and a liquid pouring auxiliary mechanism, one end of the metal liquid flow auxiliary mechanism is connected to the side wall of the mounting frame through a connecting frame, the metal liquid flow auxiliary mechanism is located on one side of the liquid delivery pipe, the metal liquid flow auxiliary mechanism can knock along the radial direction of the liquid delivery pipe, the liquid pouring auxiliary mechanism is located on the side wall of the feed hopper, the liquid pouring auxiliary mechanism is connected to the side wall of the feed hopper through a frame above the liquid pouring auxiliary mechanism, and the liquid pouring auxiliary mechanism is connected to the rotating disc of the metal liquid flow auxiliary mechanism through a disc below the liquid pouring auxiliary mechanism, and the liquid pouring auxiliary mechanism is used for knocking the outer wall of the feed hopper during pouring the metal liquid into the feed hopper.

[0008] As a further scheme of the present application: the metal liquid flow circulation auxiliary mechanism comprises a rotating disc and a fixed ring, the rotating disc is rotationally connected to the outer surface of the infusion tube, the fixed ring is fixedly connected to the outer surface of the infusion tube, equidistantly fixed rings are fixedly connected to the outer surface of the fixed ring, rotating shafts are fixedly connected to the support blocks, the outer surfaces of the rotating shafts are rotationally connected with linkage frames, first knocking balls are arranged at the ends of the linkage frames away from the fixed ring, the first knocking balls are in close contact with the outer surface of the infusion tube, an arc-shaped groove and a limiting groove are arranged on the side of the rotating disc close to the fixed ring, the arc-shaped groove and the limiting groove are in communication, equidistantly connected columns are arranged on the side of the rotating disc close to the fixed ring, the connected columns are connected with the linkage frames, and the connected columns are slidingly connected to the arc-shaped groove and the limiting groove, support columns are slidingly connected to the connected columns, and the support columns are fixedly connected to the outer surface of the infusion tube.

[0009] As a further scheme of the present application: the linkage frames are symmetrically provided with through grooves on the side close to the connected columns, linkage columns are slidingly connected between every two adjacent through grooves, and the linkage columns are fixedly connected to the connected columns.

[0010] As a further scheme of the present application: a transmission gear is engagedly connected below the rotating disc, a driving motor is fixedly connected to the center of the transmission gear, a connecting frame is fixedly connected to the lower end of the driving motor, and the connecting frame is fixedly connected to the side wall of the mounting frame.

[0011] As a further scheme of the present application: hollow columns are fixedly connected to the side of the linkage frame close to the first knocking ball, extrusion columns are slidingly connected to the side of the hollow column away from the linkage frame, and the extrusion columns are fixedly connected to the first knocking ball.

[0012] As a further scheme of the present application: the liquid pouring auxiliary mechanism comprises a frame, the frame is fixedly connected to the side wall of the feeding hopper, connecting shafts are rotationally connected to the two sides of the frame, fixed rods are fixedly connected to the outer surfaces of the connecting shafts, second knocking balls are fixedly connected to the lower ends of the fixed rods, and the second knocking balls are in close contact with the side wall of the feeding hopper.

[0013] As a further scheme of the present application: a lifting column is slidingly connected to the frame, a U-shaped frame is fixedly connected to the lower end of the lifting column, and counterweights are fixedly connected to the upper end of the U-shaped frame.

[0014] As a further scheme of the present application: a U-shaped frame is fixedly connected to the side wall of the U-shaped frame, a dial rod is fixedly connected to the side wall of the U-shaped frame, a dial plate is sleeved with the outer surface of the dial rod, the dial plate is fixedly connected to the connecting shaft, a communication groove is arranged on the dial plate, and the dial rod is slidingly connected to the communication groove.

[0015] As a further scheme of the present application: the U-shaped frame is provided with a disc below, the disc is fixedly connected to the side wall of the rotating disc, and push rods are fixedly connected to the outer surface of the disc in a symmetrical manner.

[0016] Compared with the prior art, the application provides a double-tube water-cooled metal mold centrifugal pipe casting device, which has the following beneficial effects:

[0017] Through the metal liquid flow circulation auxiliary mechanism, the outer wall of the infusion tube can be knocked simultaneously during the process of metal liquid being transported to the inside of the pipe mold through the infusion tube, which not only effectively destroys the metal solidification layer gradually formed on the pipe wall, prevents the cross-sectional area of the flow channel from being reduced or even completely blocked, and continuously maintains the patency and continuity of liquid transportation, but also significantly reduces the adhesion tendency between the metal liquid and the pipe wall, greatly reduces the wall-hanging dirt phenomenon, keeps the inner wall of the pipe clean and smooth, avoids the negative impact of metal residues accumulation on flow rate and flow stability, and promotes the air bubbles inside the liquid to accelerate detachment, float and break out through mechanical vibration, effectively reducing the gas in the liquid.

[0018] The hollow column and the extrusion column are arranged, so that after the first knocking ball contacts the outer surface of the infusion tube, the extrusion column slides into the hollow column to extrude the air, and the first knocking ball completes the knocking of the pipe wall.

[0019] The arc-shaped grooves and the limiting grooves are arranged, so that the first knocking balls around the outer surface of the infusion tube knock the outer wall of the infusion tube in turn and intermittently, which not only can accurately control the frequency and timing of knocking, realizes periodic impact instead of continuous vibration, thereby effectively avoiding the fatigue damage of the pipe wall material, structural resonance and unnecessary energy consumption caused by excessive vibration, but also gives the metal liquid in the pipe sufficient flow response and self-regulation time window, so that each knocking can maximize the efficiency, and the knocking balls around the pipe act in turn according to the predetermined order, forming a vibration transmission mode similar to "spiral propulsion", which can induce micro-circulation and turbulence effects in the liquid, significantly enhancing the stripping, carrying and floating capacity of inclusions, and avoiding the instantaneous impact overload caused by multiple balls knocking at the same time, thereby protecting the overall stability of the pipe structure.

[0020] By using a liquid pouring auxiliary mechanism, the outer wall of the feed hopper is struck during the process of pouring molten metal into the mold through the delivery pipe. This vibration not only effectively reduces the surface tension and viscosity of the molten metal, but also accelerates the desorption, floating, and rupture of tiny bubbles entrained during pouring and transfer, significantly reducing gaseous residue inside the liquid. Furthermore, it fundamentally destroys the solidified layer that gradually forms on the inner wall of the feed hopper due to the molten metal's rapid cooling effect, preventing the flow channel cross-sectional area from continuously shrinking or even completely blocking. This ensures that the molten metal maintains the designed flow rate throughout the transition from the hopper to the delivery pipe, avoiding serious process abnormalities such as pouring interruption or insufficient filling caused by flow channel interruption, and guaranteeing production continuity and cycle stability.

[0021] By using a disc, push rod, and counterweight, the vibration of the feed hopper and the infusion tube can be combined and operated synchronously. This organically superimposes and resonates the mechanical energy of the two vibration sources, so that the impact force ultimately transmitted to the outer wall of the infusion tube is no longer a simple linear superposition, but forms a composite vibration mode with phase coupling and frequency multiplication. This significantly reduces the additional demand for drive power and avoids energy dispersion loss and ineffective work. Attached Figure Description

[0022] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the connection structure between the feed hopper and the delivery pipe of the present invention;

[0025] Figure 3 This is a schematic diagram of the connection structure between the infusion tube and the first striking ball of the present invention;

[0026] Figure 4 For the present invention Figure 3 Enlarged structural diagram of region A in the middle;

[0027] Figure 5 For the present invention Figure 3 Enlarged structural diagram of region B in the middle;

[0028] Figure 6 This is a schematic diagram of the connection structure between the feed hopper and the frame of the present invention;

[0029] Figure 7 For the present invention Figure 6 A magnified structural diagram of region C in the middle.

[0030] In the diagram: 1. Support frame; 2. Tube mold; 3. Mounting frame; 4. Feed hopper; 5. Infusion tube;

[0031] 601, connecting frame; 602, driving motor; 603, transmission gear; 604, rotating disc; 605, linkage frame; 606, first knocking ball; 607, arc-shaped groove; 608, limiting groove; 609, connecting column; 610, supporting block; 611, rotating shaft; 612, through groove; 613, linkage column; 614, hollow column; 615, extrusion column; 616, fixing ring; 617, supporting column;

[0032] 701, frame; 702, second knocking ball; 703, fixing rod; 704, connecting shaft; 705, disc; 706, push rod; 707, U-shaped frame; 708, lifting column; 709, counterweight block; 710, push plate; 711, communication groove; 712, push rod. DETAILED DESCRIPTION

[0033] The technical solutions of the present application will be described clearly and completely below in conjunction with the embodiments. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work are within the protection scope of the present application.

[0034] A double-pipe water-cooled metal mold centrifugal pipe casting device of the embodiment, as shown in the figure, comprises a support frame 1, a pipe mold 2 is symmetrically connected to the support frame 1, an installation frame 3 is symmetrically fixedly connected to one side of the support frame 1, a feeding hopper 4 is fixedly connected to the installation frame 3, a liquid conveying pipe 5 is fixedly connected to one side of the feeding hopper 4 close to the pipe mold 2, a metal liquid flow auxiliary mechanism and a liquid pouring auxiliary mechanism are further included, the metal liquid flow auxiliary mechanism is located on one side of the liquid conveying pipe 5, and the metal liquid flow auxiliary mechanism can knock along the radial direction of the liquid conveying pipe 5. Figure 1 Figure 7 The metal liquid flow auxiliary mechanism in the embodiment, as shown in the figure, comprises a connecting frame 601, a driving motor 602, a transmission gear 603, a rotating disc 604, a linkage frame 605, a first knocking ball 606, an arc-shaped groove 607, a limiting groove 608, a connecting column 609, a supporting block 610, a rotating shaft 611, a through groove 612, a linkage column 613, a hollow column 614, an extrusion column 615, a fixing ring 616, and a supporting column 617.

[0035] The liquid pouring auxiliary mechanism in the embodiment, as shown in the figure, comprises a frame 701, a second knocking ball 702, a fixing rod 703, a connecting shaft 704, a disc 705, a push rod 706, a U-shaped frame 707, a lifting column 708, a counterweight block 709, a push plate 710, a communication groove 711, and a push rod 712. Figure 4 ​As shown, the metal liquid flow circulation auxiliary mechanism comprises a rotating disc 604 and a fixed ring 616, the rotating disc 604 is rotationally connected to the outer surface of the infusion tube 5, the fixed ring 616 is fixedly connected to the outer surface of the infusion tube 5, equidistantly fixed ring-shaped support blocks 610 are arranged on the outer surface of the fixed ring 616, rotating shafts 611 are fixedly connected to the support blocks 610, linkage frames 605 are rotationally connected to the outer surfaces of the rotating shafts 611, first knocking balls 606 are arranged at the ends of the linkage frames 605 away from the fixed ring 616, the first knocking balls 606 are in close contact with the outer surface of the infusion tube 5, an arc-shaped groove 607 and a limiting groove 608 are arranged on one side of the rotating disc 604 close to the fixed ring 616, the arc-shaped groove 607 and the limiting groove 608 are in communication, equidistantly fixed connecting columns 609 are arranged on one side of the rotating disc 604 close to the fixed ring 616, the connecting columns 609 are connected with the linkage frames 605, and the connecting columns 609 are slidingly connected in the arc-shaped groove 607 and the limiting groove 608, support columns 617 are slidingly connected to the connecting columns 609, and the support columns 617 are fixedly connected to the outer surface of the infusion tube 5, when the rotating disc 604 rotates to change the positions of the arc-shaped groove 607 and the limiting groove 608, the connecting columns 609 are driven to slide on the outer surfaces of the support columns 617 towards the infusion tube 5 in the process of sliding from the arc-shaped groove 607 into the limiting groove 608, and vice versa.

[0036] In the embodiment, as shown in Figure 4 The linkage frames 605 are symmetrically provided with through grooves 612 on one side close to the connecting columns 609, linkage columns 613 are slidingly connected between every two adjacent through grooves 612, and the linkage columns 613 are fixedly connected to the connecting columns 609, when the connecting columns 609 reciprocate, the linkage columns 613 are driven to synchronously slide in the through grooves 612, and the linkage columns 613 drive the linkage frames 605 at one end to synchronously reciprocate through the through grooves 612.

[0037] In the embodiment, as shown in Figure 2 and Figure 3 The rotating disc 604 is meshingly connected with a transmission gear 603 below, the transmission gear 603 is fixedly connected at the center with a driving motor 602, the driving motor 602 is fixedly connected at the lower end with a connecting frame 601, and the connecting frame 601 is fixedly connected to the side wall of the mounting frame 3, when the driving motor 602 drives the transmission gear 603 to rotate, the transmission gear 603 is meshingly connected with the rotating disc 604, so that the rotating disc 604 is driven to synchronously rotate.

[0038] In the embodiment, as shown in Figure 5As shown, the linkage frame 605 is fixedly connected with a hollow column 614 on the side close to the first knocking ball 606, and the hollow column 614 is slidingly connected with an extrusion column 615 on the side away from the linkage frame 605, and the extrusion column 615 is fixedly connected to the first knocking ball 606. When the first knocking ball 606 cannot continue to move due to contact with the infusion tube 5, the first knocking ball 606 will push the extrusion column 615 to slide into the hollow column 614 to compress the air in the hollow column 614 as the linkage frame 605 continues to press.

[0039] In the prior art, when the metal liquid is transported through the pipeline to the inside of the centrifugal casting machine for casting, the molten iron rapidly forms a solidification layer in the pipe due to the chilling effect, resulting in a continuous shrinkage of the flow passage cross-sectional area, not only causing the pouring flow to decay and the filling time to be prolonged, but also more easily causing fatal defects such as cold shut and insufficient pouring, affecting the smoothness and continuity of the metal liquid in the conveying process, and due to the influence of the solidification layer, the metal liquid in the flow process will have an adhesion tendency with the pipe wall, and wall-hanging and fouling phenomenon is easy to occur, affecting the flow rate and flow of the metal liquid. Compared with the prior art, the liquid infusion auxiliary mechanism can drive the knocking of the outer wall of the infusion tube 5 during the process of the metal liquid being transported through the infusion tube 5 to the inside of the pipe mold 2, effectively destroying the metal solidification layer gradually formed on the pipe wall, preventing the flow passage cross-sectional area from shrinking or even being completely blocked, continuously maintaining the smoothness and continuity of the liquid conveying, ensuring that the pouring process is not interrupted or slowed down due to flow passage blockage, significantly reducing the adhesion tendency between the metal liquid and the pipe wall, greatly reducing the wall-hanging and fouling phenomenon, keeping the inner wall of the pipeline clean and smooth, avoiding the negative impact of metal residues accumulation on the stability of flow rate and flow, and accelerating the detachment, floating and rupture of the gas bubbles entrained in the liquid by mechanical vibration, effectively reducing the gas solubility and gas phase inclusion content in the liquid, and significantly reducing the probability of generating gas hole defects in the final casting;

[0040] The hollow column 614 and the extrusion column 615 are provided, and after the first knocking ball 606 contacts the outer surface of the infusion tube 5, the extrusion column 615 slides into the hollow column 614 to extrude the air, so that the first knocking ball 606 completes the knocking of the pipe wall. The process of the extrusion column 615 sliding into the hollow column 614 to compress the air actually constructs a flexible power transmission system. The compressed air as an elastic medium can effectively absorb and buffer the instantaneous peak load of mechanical impact, avoiding the direct impact damage and stress concentration phenomenon of rigid knocking on the outer wall of the infusion tube 5, significantly prolonging the service life of the infusion tube 5 and the knocking ball itself, and also preventing safety hazards such as pipeline weld cracking or structural deformation caused by excessive impact.

[0041] In other aspects, the embodiment also provides a liquid pouring auxiliary mechanism for knocking the outer wall of the feeding hopper 4 during the process of pouring the metal liquid into the feeding hopper 4, as shown in Figure 1、 Figure 2 、 Figure 6 and Figure 7 As shown in

[0042] In the embodiment, as shown in Figure 6 A lifting column 708 is slidably connected through the frame 701, the lower end of the lifting column 708 is fixedly connected with a U-shaped frame 707, the upper end of the U-shaped frame 707 is fixedly connected with a counterweight 709 in a symmetrical manner, when the U-shaped frame 707 is forced to rise, the lifting column 708 will be pushed to slide upward on the frame 701 synchronously, when the force acting on the U-shaped frame 707 disappears, the counterweight 709 can automatically push the U-shaped frame 707 to descend.

[0043] In the embodiment, as shown in Figure 6 and Figure 7 A push rod 712 is fixedly connected to the side wall of the U-shaped frame 707 in a symmetrical manner, a push plate 710 is sleeved on the outer surface of the push rod 712, the push plate 710 is fixedly connected to the connecting shaft 704, a communication groove 711 is formed in the push plate 710, the push rod 712 is slidably connected in the communication groove 711, when the U-shaped frame 707 moves up and down, the push rod 712 will slide in the communication groove 711 synchronously, and the push rod 712 will drive the push plate 710 to rotate the connecting shaft 704 through the communication groove 711.

[0044] In the embodiment, as shown in Figure 6 A disc 705 is arranged below the U-shaped frame 707, the disc 705 is fixedly connected to the side wall of the rotating disc 604, push rods 706 are fixedly connected to the outer surface of the disc 705 in a symmetrical manner, when the disc 705 drives the rotating disc 604 to rotate, the rotating disc 604 will drive the push rods 706 connected to the outer surface to push the U-shaped frame 707 above to rise.

[0045] Compared with the prior art, the outer wall of the feeding hopper 4 can be knocked during pouring of the metal liquid into the feeding hopper 4 through the liquid delivery pipe 5 into the inside of the pipe mold 2, the vibration effect not only effectively reduces the surface tension and viscosity characteristics of the metal liquid, promotes the small bubbles involved in the pouring and transferring process to accelerate the detachment, floatation and rupture and escape, significantly reduces the gas phase residues in the liquid, but also fundamentally destroys the wall-hanging solidification layer gradually formed on the inner wall of the feeding hopper 4 due to the quenching effect of the metal liquid, prevents the continuous shrinkage of the flow passage cross-sectional area and even complete blockage, ensures that the transition process of the metal liquid from the hopper body to the liquid delivery pipe 5 always maintains the designed flow rate, avoids the pouring interruption or under-filling caused by the flow passage truncation and other serious process abnormalities, and guarantees the production continuity and beat stability.

[0046] The working process and principles involved in the above embodiment are as follows:

[0047] When the staff needs to cast a pipe, the molten metal liquid is first poured into the feeding hopper 4, and then the metal liquid flows into the inside of the pipe mold 2 through the feeding hopper 4 and the liquid delivery pipe 5, at this time the pipe mold 2 is synchronously driven to rotate at high speed on the support frame 1 by an external motor, and the metal liquid is formed into a metal pipe in the inside of the pipe mold 2 by the centrifugal force;

[0048] During the process that the metal liquid enters into the feeding hopper 4 and the liquid delivery pipe 5, the driving motor 602 is started to drive the transmission gear 603 connected to the output end of the driving motor 602 to rotate. Since the transmission gear 603 is meshedly connected with the rotating disc 604 above, and the rotating disc 604 is rotationally connected to the outer surface of the liquid delivery pipe 5, the rotating disc 604 will rotate synchronously on the outer surface of the liquid delivery pipe 5 along with the rotation of the transmission gear 603. At this time, since the arc-shaped groove 607 and the limiting groove 608 are communicated, and the connecting column 609 is slidably connected in the arc-shaped groove 607 and on the outer surface of the supporting column 617, the positions of the arc-shaped groove 607 and the limiting groove 608 will change simultaneously during the rotation of the rotating disc 604. When the limiting groove 608 slides close to the connecting column 609, the connecting column 609 will slide from the arc-shaped groove 607 into the limiting groove 608, and meanwhile, slide close to the liquid delivery pipe 5 downward on the outer surface of the supporting column 617. During the descending process of the connecting column 609, since the linkage column 613 is fixedly connected to the side of the connecting column 609 away from the rotating disc 604, and the linkage column 613 is slidably connected in the through groove 612 symmetrically formed in the linkage frame 605, and the linkage frame 605 is rotationally connected to the outer surface of the rotating shaft 611, and the first knocking ball 606 is connected to the side of the linkage frame 605 away from the linkage column 613, the linkage column 613 will press the side of the linkage frame 605 downward through the through groove 612 along with the descending of the connecting column 609, to drive the linkage frame 605 to rotate on the outer surface of the rotating shaft 611, and lift the first knocking ball 606 connected to the side of the linkage frame 605 away from the linkage column 613 away from the liquid delivery pipe 5. When the connecting column 609 slides from the limiting groove 608 into the arc-shaped groove 607 again, the first knocking ball 606 will be knocked on the outer surface of the liquid delivery pipe 5 by the linkage column 613, the through groove 612 and the linkage frame 605. Not only this can effectively destroy the metal solidification layer gradually formed on the pipe wall, prevent the reduction or even complete blockage of the flow passage cross-sectional area, continuously maintain the patency and continuity of the liquid delivery, ensure that the pouring process will not be interrupted or slowed down due to the blockage of the flow passage, but also significantly reduce the adhesion tendency between the metal liquid and the pipe wall, greatly reduce the wall-hanging dirt phenomenon, keep the inner wall of the pipeline clean and smooth, avoid the negative impact of metal residues accumulation on the stability of flow rate and flow, and promote the detachment, floating and rupture of the gas bubbles entrained in the liquid by mechanical vibration, effectively reduce the gas solubility and gas inclusion content in the liquid, and significantly reduce the generation probability of internal porosity defects in the final casting.

[0049] In the process that the linkage frame 605 drives the first knocking ball 606 to knock on the outer surface of the infusion pipe 5, after the first knocking ball 606 contacts the outer surface of the infusion pipe 5, because the hollow column 614 is connected to the side close to the first knocking ball 606 of the linkage frame 605, the extrusion column 615 is slidingly connected through the hollow column 614, and the extrusion column 615 is fixedly connected to the first knocking ball 606, therefore, with the movement of the linkage frame 605, the first knocking ball 606 is blocked by the infusion pipe 5, pushes the extrusion column 615 to slide into the hollow column 614, extrudes the air in the hollow column 614, so that the first knocking ball 606 completes the knocking on the pipe wall, the extrusion column 615 slides into the hollow column 614 to compress the air, which substantially constructs a flexible power transmission system, the compressed air as an elastic medium can effectively absorb and buffer the instantaneous peak load of mechanical impact, avoids the direct impact damage and stress concentration phenomenon of the rigid knocking on the outer wall of the infusion pipe 5, significantly prolongs the service life of the infusion pipe 5 and the knocking ball itself, and also prevents the safety hazards such as pipe weld cracking or structure deformation caused by excessive impact;

[0050] In the process that the first knocking ball 606 knocks on the outer surface of the infusion pipe 5, through the arc-shaped groove 607 and the limiting groove 608, the first knocking ball 606 around the outer surface of the infusion pipe 5 can be driven to knock on the outer wall of the infusion pipe 5 intermittently in turn, which can accurately control the frequency and timing of knocking, realize the periodic impact effect instead of continuous vibration, thereby effectively avoiding the pipe wall material fatigue damage, structure resonance and energy unnecessary consumption caused by excessive vibration, giving sufficient flow response and self-regulation time window to the metal liquid in the pipe, so that each knocking can play the maximum efficiency, and the knocking balls around the pipe act in turn according to the predetermined order, forming a vibration transmission mode similar to "spiral propulsion", this asynchronous impact sequence can induce micro-scale rotational flow and turbulent flow effects in the liquid, significantly enhancing the stripping, carrying and floating capacity of inclusions, while avoiding the instantaneous impact overload caused by multiple balls knocking at the same time, protecting the overall stability of the pipe structure;

[0051] During the rotation of the rotating disc 604, since the rotating disc 604 is connected with the disc 705 away from one side of the arc-shaped groove 607, the disc 705 is fixedly connected with the push rod 706 on the outer surface in a symmetrical manner, and the disc 705 and the push rod 706 are located at the lower end of the U-shaped frame 707, the upper end surface of the U-shaped frame 707 is fixedly connected with the lifting column 708, the lifting column 708 penetrates through the frame 701 and is connected in a sliding manner, therefore, with the rotation of the rotating disc 604, the disc 705 can be driven to rotate synchronously, so that the push rod 706 connected with the outer surface of the disc 705 moves synchronously, when the push rod 706 moves close to the lower end surface of the U-shaped frame 707, with the upward movement of the push rod 706, the U-shaped frame 707 is pushed to drive the lifting column 708 to slide vertically upward on the frame 701, during the upward movement of the U-shaped frame 707, the U-shaped frame 707 pushes the two side connected push rods 712 to move upward synchronously, so that the push rod 712 slides in the communication groove 711 on the dial plate 710, at the same time, the push rod 712 drives the dial plate 710 to move through the communication groove 711, so that the connecting shaft 704 fixedly connected with the other end of the dial plate 710 rotates on the frame 701, since the connecting shaft 704 is connected with the fixed rod 703 on the outer surface, and the fixed rod 703 is fixedly connected with the second knocking ball 702 at the lower end, therefore, with the rotation of the connecting shaft 704, the second knocking ball 702 is driven to move away from the sidewall of the feeding hopper 4 through the fixed rod 703, when the push rod 706 connected with the lower end of the U-shaped frame 707 rotates downward and separates from the U-shaped frame 707, the U-shaped frame 707 automatically descends under the influence of the counterweight 709 connected with the upper end surface of the U-shaped frame 707 in a symmetrical manner and the gravity of the U-shaped frame 707 itself, at this time, the U-shaped frame 707 drives the connecting shaft 704 to rotate reversely through the push rod 712, the communication groove 711 and the dial plate 710, so that the connecting shaft 704 drives the second knocking ball 702 to knock on the sidewall of the feeding hopper 4 through the fixed rod 703, the vibration effect not only effectively reduces the surface tension and viscosity characteristics of the metal liquid, promotes the small bubbles involved in the pouring and transfer process to accelerate detachment, floatation and breakage, significantly reduces the gas phase residue in the liquid, but also fundamentally destroys the hanging solidification layer gradually formed on the inner wall of the feeding hopper 4 due to the chilling effect of the metal liquid, prevents the continuous shrinkage of the flow passage cross-sectional area and even complete blockage, ensures that the transition process of the metal liquid from the hopper body to the liquid conveying pipe 5 always maintains the designed flow rate, avoids the pouring interruption or insufficient filling caused by flow passage truncation and other serious process abnormalities, and guarantees the production continuity and beat stability;

[0052] The vibration of the feeding hopper 4 and the vibration of the infusion pipe 5 can be combined and work synchronously by the disc 705, the push rod 706 and the counterweight 709, the mechanical energy of the two vibration sources is organically superimposed and resonantly amplified, the knocking force transmitted to the outer wall of the infusion pipe 5 is no longer a simple linear superposition, but a complex vibration mode with phase coupling and frequency multiplication, thereby the additional demand for driving power is significantly reduced, and the energy dispersion loss and invalid work are avoided.

[0053] The preferred embodiments of the application disclosed above are only used to help explain the application. The preferred embodiments do not describe all the details and limit the application to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of the specification. The specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the application, so that those skilled in the art can well understand and utilize the application. The application is limited only by the claims and their full scope and equivalents.

Claims

1. A dual-tube water-cooled metal mold centrifugal casting device, comprising a support frame (1), wherein a tube mold (2) is symmetrically rotatably connected to the support frame (1), and mounting frames (3) are symmetrically fixedly connected to one side of the support frame (1), wherein each mounting frame (3) is fixedly connected to a feed hopper (4), and each feed hopper (4) is fixedly connected to a delivery tube (5) on the side near the tube mold (2), characterized in that, It also includes a metal liquid flow auxiliary mechanism and a liquid pouring auxiliary mechanism; One end of the metal liquid flow auxiliary mechanism is connected to the side wall of the mounting frame (3) via a connecting frame (601). The metal liquid flow auxiliary mechanism is located on one side of the infusion tube (5). The metal liquid flow auxiliary mechanism can strike along the radial direction of the infusion tube (5). The metal liquid flow auxiliary mechanism includes a turntable (604) and a fixing ring (616). The turntable (604) is rotatably connected to the outer surface of the infusion tube (5). The fixing ring (616) is fixedly connected to the outer surface of the infusion tube (5). Support blocks (610) are fixedly connected at equal intervals in a ring on the outer surface of the fixing ring (616). A rotating shaft (611) is fixedly connected to each support block (610). A linkage frame (605) is rotatably connected to the outer surface of each rotating shaft (611). The linkage frame (605) is far from A first striking ball (606) is provided at one end of the fixed ring (616). The first striking ball (606) is in contact with the outer surface of the infusion tube (5). An arc groove (607) and a limiting groove (608) are provided on the side of the turntable (604) near the fixed ring (616). The arc groove (607) and the limiting groove (608) are connected. Connecting columns (609) are arranged equidistantly in a ring on the side of the turntable (604) near the fixed ring (616). The connecting columns (609) are all connected to the linkage frame (605). The connecting columns (609) are all slidably connected in the arc groove (607) and the limiting groove (608). A support column (617) is slidably connected through the connecting column (609). The support column (617) is fixedly connected to the outer surface of the infusion tube (5). The liquid pouring auxiliary mechanism is located on the side wall of the feed hopper (4), and the upper part of the liquid pouring auxiliary mechanism is connected to the side wall of the feed hopper (4) through a frame (701), and the lower part of the liquid pouring auxiliary mechanism is connected to the turntable (604) of the metal liquid flow auxiliary mechanism through a disc (705). The liquid pouring auxiliary mechanism is used to strike the outer wall of the feed hopper (4) during the process of pouring the metal liquid into the feed hopper (4).

2. The dual-tube water-cooled metal mold centrifugal casting device according to claim 1, characterized in that, The linkage frame (605) is symmetrically provided with through slots (612) on the side near the connecting column (609), and a linkage column (613) is slidably connected between two adjacent through slots (612), and the linkage column (613) is fixedly connected to the connecting column (609).

3. The dual-tube water-cooled metal mold centrifugal casting device according to claim 2, characterized in that, A transmission gear (603) is meshed below the turntable (604), and a drive motor (602) is fixedly connected at the center of the transmission gear (603). A connecting frame (601) is fixedly connected to the lower end of the drive motor (602), and the connecting frame (601) is fixedly connected to the side wall of the mounting frame (3).

4. The dual-tube water-cooled metal mold centrifugal casting device according to claim 3, characterized in that, Hollow columns (614) are fixedly connected to the side of the linkage frame (605) near the first striking ball (606). A pressing column (615) is slidably connected to the side of the hollow column (614) away from the linkage frame (605). The pressing column (615) is fixedly connected to the first striking ball (606).

5. The dual-tube water-cooled metal mold centrifugal casting device according to claim 1, characterized in that, The liquid pouring auxiliary mechanism includes a frame (701), which is fixedly connected to the side wall of the feed hopper (4). A connecting shaft (704) is rotatably connected through both sides of the frame (701). A fixing rod (703) is fixedly connected to the outer surface of the connecting shaft (704). A second striking ball (702) is fixedly connected to the lower end of the fixing rod (703). The second striking ball (702) is attached to the side wall of the feed hopper (4).

6. A dual-tube water-cooled metal mold centrifugal casting device according to claim 5, characterized in that, A lifting column (708) is slidably connected through the frame (701), and a U-shaped frame (707) is fixedly connected to the lower end of the lifting column (708). A counterweight (709) is symmetrically fixedly connected to the upper end of the U-shaped frame (707).

7. A dual-tube water-cooled metal mold centrifugal casting device according to claim 6, characterized in that, The U-shaped frame (707) has symmetrically fixed levers (712) on its side wall. Each lever (712) has a lever plate (710) on its outer surface. Each lever plate (710) is fixedly connected to the connecting shaft (704). Each lever plate (710) has a connecting groove (711) on it. Each lever (712) is slidably connected to the connecting groove (711).

8. A dual-tube water-cooled metal mold centrifugal casting device according to claim 7, characterized in that, A disc (705) is provided below the U-shaped frame (707). The disc (705) is fixedly connected to the side wall of the turntable (604). Push rods (706) are symmetrically fixedly connected to the outer surface of the disc (705).

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