A stream inoculation pouring device and process suitable for large workbench castings

Abstract

The application discloses a stream inoculation pouring device and process suitable for large workbench castings and belongs to the technical field of metal casting. The device comprises a tank body, a filter assembly is arranged on the inner wall of the tank body, a piston plate is threadedly connected to the outer wall of a lead screw, a blowdown mechanism is arranged on the outer wall of the piston plate, and a limiting mechanism is arranged on the outer walls of first and second mounting racks. Double filtration is realized through coarse filtration of large-particle impurities by a first filter screen and fine filtration of small impurities by a second filter screen, inoculation recession is greatly reduced, the number of graphite balls and the uniformity of casting organization are improved, the initial limiting of the two filter screens is automatically removed through the movement of the piston plate, a linkage push rod, an extrusion block and a spring limiting assembly, the filter screens are pushed to adhere to the end face of the sprinkler, the piston plate is reset after filling is completed, a three-way valve is switched to switch the pipeline, the inoculant is guided into the sprinkler to be sprayed and high-pressure water flow is formed, the inside of the double filter screens is reversely washed, and the trapped impurities in the filter screens are washed off.

Description

Technical Field

[0001] This invention relates to the field of metal casting technology, and in particular to a flow-inoculation pouring device and process suitable for large workbench castings. Background Technology

[0002] In-flow inoculation is a key process in cast iron production to improve the uniformity of casting structure and suppress white iron defects. Its core is to add inoculant simultaneously during the flow of molten iron, and achieve uniform dispersion of inoculant through dynamic mixing, thereby reducing the inoculation fading effect and increasing the number of graphite spheres and casting performance.

[0003] Chinese Patent CN223171875U, published and announced on August 1, 2025, discloses a flow-following inoculant device for a three-axis linkage casting machine. Through a lifting mechanism, the installed flow guide component can be adjusted in height, ensuring that the inoculant added to the flow guide component aligns with the feed inlet of the flow guide as it falls. This facilitates the inoculant's descent into the molten iron through the flow-following pipe, enhancing the flexibility of adjustment after installation and preventing the added inoculant from easily spilling into the surrounding environment. The distance between the follow-up tube installed at the bottom of the guide and the base can be adjusted by the set support components, thereby avoiding the follow-up tube from being installed too low and touching the molten iron, and improving the flexibility of the follow-up tube position adjustment. However, when the follow-up inoculation device of the three-axis linkage casting machine is used, it cannot filter the inoculant, so the inoculant with impurities falls into the molten iron and melts slowly. It enters the mold before it can disperse, resulting in local inoculant enrichment and graphite floating, while the inoculation in other areas is insufficient, resulting in uneven inoculation. Summary of the Invention

[0004] The purpose of this invention is to provide a flow-inoculation casting device suitable for large workbench castings, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a flow-inoculation casting device suitable for large workbench castings, comprising a tank, an injection pipe connected to one outer wall of the tank, a filter assembly disposed on the inner wall of the tank, the filter assembly including a motor mounted on the outer wall of the tank, a lead screw connected to the outer wall of the motor, a piston plate threadedly connected to the outer wall of the lead screw, a sludge discharge mechanism disposed on the outer wall of the piston plate, a first mounting bracket and a second mounting bracket connected to the inner wall of the tank, and a guide rod fixedly connected to the inner wall of the tank. A first filter screen is connected to the outer wall of the first mounting bracket. A rotating sleeve adapted to the lead screw is provided on the outer walls of both the first and second mounting brackets. A scraper is fixedly connected to the surface of the rotating sleeve on the first mounting bracket. A second filter screen is connected to the outer wall of the second mounting bracket. A limiting mechanism is provided on the outer walls of the first and second mounting brackets. A three-way valve is connected to the outer wall of the injection pipe. A connecting pipe is connected to the outer wall of one end of the three-way valve. A water spraying plate adapted to the connecting pipe is provided on the inner wall of one end of the tank. Water spraying holes are evenly distributed on the outer wall of the water spraying plate.

[0006] Preferably, the piston plate, the first mounting bracket, and the second mounting bracket are all slidably connected to the guide rod, and one end of the lead screw is fixedly connected to the sprinkler disc.

[0007] Preferably, the limiting mechanism includes a fixed rod fixed on a first mounting bracket, a connecting sleeve adapted to the fixed rod on the outer wall of the second mounting bracket, a fixed sleeve adapted to the connecting sleeve on the outer wall of the tank, first limiting blocks symmetrically arranged on the inner wall of the fixed rod, a first spring connecting the two first limiting blocks, a push rod connected to the inner wall of the fixed rod, two fixed plates fixedly connected to the outer wall of the push rod, a first pressing block fixedly connected to the outer wall of one end of the push rod, second limiting blocks symmetrically arranged on the inner wall of the connecting sleeve, a second spring connecting the two second limiting blocks, a connecting rod connected to the inner wall of the connecting sleeve, a second pressing block fixedly connected to the outer wall of one end of the connecting rod, and a first return spring connected to the inner wall of the fixed sleeve.

[0008] Preferably, a connecting block is fixedly connected to the outer wall of the connecting sleeve, an oil storage chamber is formed on the inner wall of the connecting block, a push plate is connected to the inner wall of the oil storage chamber, a locking block is connected to the inner wall of one end of the oil storage chamber, a top plate is connected to the outer wall of the push rod, a connecting column is slidably connected to the outer wall of the top plate, a connecting spring is fixedly connected to the outer wall of the connecting column, a contact is fixedly connected to the outer wall of one end of the connecting spring, a connecting groove is formed on the outer wall of one end of the fixed sleeve, and a locking groove is formed on the inner wall of the connecting groove.

[0009] Preferably, the slot is trapezoidal, and the contact is slidably connected to the fixed rod via a push rod, a top plate, a connecting column, and a connecting spring.

[0010] Preferably, the sewage discharge mechanism includes a connector fixed to one outer wall of the tank body, a winding shaft connected to the inner wall of the connector, a first rope adapted to the piston plate provided on the outer wall of the winding shaft, a spring adapted to the connector provided on the outer wall of the winding shaft, a differential structure provided on the outer wall of the winding shaft, a connecting shaft connected to the inner wall of the connector and connected to the winding shaft through the differential structure, a second rope connected to the outer wall of the connecting shaft, a fixing block fixedly connected to the bottom outer wall of the tank body, a connecting plate adapted to the second rope provided on the outer wall of the fixing block, a first torsion spring adapted to the fixing block provided on the outer wall of the connecting plate, a sealing block fixedly connected to one end of the outer wall of the connecting plate, a sewage outlet adapted to the sealing block provided on the bottom outer wall of the tank body, and a limit structure provided on one end of the outer wall of the connecting shaft.

[0011] Preferably, the differential structure includes a drive shaft rotatably connected to the outer wall of the connecting member, a drive rod connected to the inner wall of the drive shaft, a protrusion fixedly connected to the outer wall of one end of the drive rod, a guide groove adapted to the protrusion provided on the inner wall of the connecting shaft, a drive wheel fixedly connected to the outer wall of the take-up shaft, a drive wheel connected to the outer wall of the drive shaft, the drive wheel and the drive wheel being connected by a belt, toothed grooves evenly distributed on the outer wall of one end of the drive shaft, a pawl connected to the outer wall of the drive wheel, a spring plate connected to the outer wall of the drive wheel, and a limit rod connected to the outer wall of the drive wheel.

[0012] Preferably, the limiting structure includes a gear fixed to the outer wall of one end of the connecting shaft, a slide rod slidably connected to the inner wall of the connecting member, a second return spring connected to the outer wall of one end of the slide rod, a toothed block connected to the inner wall of the slide rod, a one-way rotation groove adapted to the toothed block provided on the outer wall of the slide rod, and a second torsion spring adapted to the slide rod provided on the outer wall of the toothed block.

[0013] Preferably, it includes the following steps: A casting process for a flow-inoculation casting device suitable for large workbench castings includes the following steps: S1: First, inject the inoculant into the tank, keeping the tank away from the pouring ladle to prevent the inoculant from being exposed to a high-temperature environment for a long time, which would cause the inoculant particles to become brittle and break. S2: Then, the piston plate is driven by the motor and lead screw to push the inoculant into the injection tube for injection. During this process, the first and second filters will filter the inoculant one after the other to remove particulate impurities from the inoculant. S3: While the piston plate squeezes all the inoculant into the injection pipe, it will push the first filter screen and the second filter screen to move. At this time, the limiting mechanism will close the first filter screen and the second filter screen and fix them on the surface of the spray plate. S4: Next, control the motor to rotate in the opposite direction to push the piston plate to reset, and cooperate with the three-way valve to draw the inoculant inside the injection pipe into the interior of the spray plate, and spray it out through the spray hole to backwash the surface of the first and second filter screens. S5: Activate the sewage discharge mechanism to discharge the particulate impurities flushed out along with the residual inoculant.

[0014] Compared with the prior art, the beneficial effects of the present invention are: This invention achieves dual filtration by using a first filter screen to coarsely filter large particles of impurities and a second filter screen to finely filter small particles of impurities. This significantly reduces inoculation degradation, increases the number of graphite spheres, and improves the uniformity of the casting structure. The piston plate moves in conjunction with the push rod, extrusion block, and spring limiting assembly to automatically release the initial limit of the two filter screens, pushing the filter screens to fit against the end face of the spray plate. After the injection is completed, the piston plate resets, and the pipeline is switched by a three-way valve to introduce the inoculant into the spray plate and spray it out to form a high-pressure water flow. This backwashes the inner side of the double filter screens, washing away the filter screens and trapping impurities.

[0015] This invention automatically locks the double-layer filter screen through an oil storage tank, contact head, and trapezoidal slot hydraulic clamping structure. During the flushing operation, the filter screen will not shift or loosen, ensuring that all backwash water flows act on the filter screen and the flushing effect is stable.

[0016] This invention designs a sewage discharge assembly with differential transmission and a one-way limiting structure. The sewage discharge port will not open before the piston plate passes through it. After passing through the sewage discharge port, the differential structure links the winding shaft and rope to pull the sealing block, automatically opening the sewage discharge port at the bottom of the tank. The one-way gear limiting structure ensures that the sewage discharge port remains open during the sewage discharge process, allowing impurities and residual inoculants to be fully discharged. After the piston plate returns to its initial position, the torsion spring drives the sealing block to automatically close the sewage discharge port, completing the sewage discharge process automatically without the need for manual opening and closing of the sewage discharge valve. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the side view of the tank structure in this invention; Figure 3 This is a schematic diagram of the structure in which the first mounting bracket and the first filter screen cooperate with each other in this invention; Figure 4 This is a schematic diagram of the interaction between the second mounting bracket and the second filter screen in this invention; Figure 5 This is a schematic diagram of the interlocking structure of the connecting sleeve and the fixing sleeve in this invention; Figure 6This is a schematic diagram of the interaction between the second limiting block and the second spring in this invention; Figure 7 This is a schematic diagram of the cooperative structure of the oil storage tank and the pusher plate in this invention; Figure 8 This is a schematic diagram of the interlocking structure of the connecting groove and the slot in this invention; Figure 9 This is a schematic diagram of the cooperative structure between the winding shaft and the first rope in this invention; Figure 10 This is a schematic diagram of the interaction between the connecting plate and the first torsion spring in this invention; Figure 11 This is a schematic diagram of the interaction between the transmission rod and the protrusion in this invention; Figure 12 This is a schematic diagram of the pawl and spring plate working together in this invention; Figure 13 This is a schematic diagram of the interlocking structure of the tooth block and the unidirectional rotating groove in this invention; Figure 14 In this invention Figure 6 Enlarged structural diagram at point A in the middle.

[0018] In the diagram: 1. Tank; 2. Injection pipe; 3. Motor; 4. Lead screw; 5. Piston plate; 6. First mounting bracket; 7. Second mounting bracket; 8. Guide rod; 9. First filter screen; 10. Rotating sleeve; 11. Scraper; 12. Second filter screen; 13. Three-way valve; 14. Connecting pipe; 15. Sprinkler plate; 16. Fixing rod; 17. Connecting sleeve; 18. Fixing sleeve; 19. First limiting block; 20. First spring; 21. Push rod; 22. Fixing plate; 23. First extrusion block; 24. Second limiting block; 25. Second spring; 26. Connecting rod; 27. Second extrusion block; 28. First return spring; 29. ​​Connecting block; 30. Oil storage tank; 31. Push plate; 32. Locking block; 33. Top plate; 34. Connecting column; 35. Connecting spring; 36. Contact; 37. Connecting groove; 38. Slot; 39. Connecting piece; 40. Winding shaft; 41. First rope; 42. Spring; 43. Connecting shaft; 44. Second rope; 45. Fixing block; 46. Connecting plate; 47. First torsion spring; 48. Sealing block; 49. Drain outlet; 50. Drive shaft; 51. Drive rod; 52. Protrusion; 53. Guide groove; 54. Drive wheel; 55. Drive wheel; 56. Belt; 57. Gear groove; 58. Pawl; 59. Spring plate; 60. Limiting rod; 61. Gear; 62. Slide rod; 63. Second return spring; 64. Gear block; 65. One-way rotation groove; 66. Second torsion spring. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0020] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Example

[0021] Please see Figures 1-14 This invention provides a technical solution: a flow-inoculation casting device suitable for large workbench castings, comprising a tank 1, an injection pipe 2 connected to one outer wall of the tank 1, a filter assembly provided on the inner wall of the tank 1, the filter assembly including a motor 3 mounted on the outer wall of the tank 1, a lead screw 4 connected to the outer wall of the motor 3, a piston plate 5 threadedly connected to the outer wall of the lead screw 4, a sludge discharge mechanism provided on the outer wall of the piston plate 5, a first mounting bracket 6 and a second mounting bracket 7 connected to the inner wall of the tank 1, a guide rod 8 fixedly connected to the inner wall of the tank 1, and a guide rod 8 connected to the outer wall of the first mounting bracket 6. The outer walls of the first filter screen 9, the first mounting bracket 6, and the second mounting bracket 7 are all provided with rotating sleeves 10 adapted to the lead screw 4. A scraper 11 is fixedly connected to the surface of the rotating sleeve 10 on the first mounting bracket 6. The outer wall of the second mounting bracket 7 is connected to the second filter screen 12. The outer walls of the first mounting bracket 6 and the second mounting bracket 7 are provided with limiting mechanisms. The outer wall of the injection pipe 2 is connected to a three-way valve 13. One end of the three-way valve 13 is connected to a connecting pipe 14. One end of the tank body 1 is provided with a water spraying plate 15 adapted to the connecting pipe 14. The outer wall of the water spraying plate 15 is provided with spray holes evenly distributed.

[0022] In use, the inoculant is first injected into the interior of the tank 1. Then, one end of the injection pipe 2 is placed on the pouring path of the molten iron, so that when the ladle pours out the molten iron, the molten iron can wash onto the outlet of the injection pipe 2. When adding the inoculant, the motor 3 is started to drive the lead screw 4 to rotate, and with the guide rod 8 limiting the piston plate 5, the rotational motion of the piston plate 5 and the lead screw 4 can be converted into the linear motion of the piston plate 5 along the surface of the guide rod 8. This causes the piston plate 5 to squeeze the inoculant inside the tank 1, so that the inoculant enters the interior of the injection pipe 2 and is discharged from the outlet, thus completing the injection work. Before entering the interior of the injection pipe 2, the inoculant will first pass through the first filter screen 9 to filter out large particles of impurities, and then pass through the second filter screen 12 to filter out small particles of impurities. This prevents the inoculant from having too many impurities inside, which would cause slow melting and graphite to float, resulting in uneven inoculation. During the rotation of the lead screw 4, it works with the guide rod 8 to limit the first mounting frame 6 and the second mounting frame 7, so that the lead screw 4 will rotate inside the first mounting frame 6 and the second mounting frame 7 through the rotating sleeve 10. When the rotating sleeve 10 on the first mounting frame 6 rotates, it will drive the scraper 11 to rotate synchronously, which can clean the surface of the first filter screen 9 and prevent large particles of impurities from clogging the filter holes of the first filter screen 9. When the piston plate 5 contacts the first mounting bracket 6, the limiting mechanism releases the limiting of the first mounting bracket 6. At this time, the continued movement of the piston plate 5 will push the first mounting bracket 6 toward the surface of the second mounting bracket 7. When the first mounting bracket 6 contacts the second mounting bracket 7, the limiting of the second mounting bracket 7 will be released, and the first mounting bracket 6 and the second mounting bracket 7 will be pushed onto the surface of the sprinkler plate 15. At this time, the limiting mechanism will make the first mounting bracket 6 and the second mounting bracket 7 fit tightly together. Then, the three-way valve 13 will be controlled to open the channel between the injection pipe 2 and the connecting pipe 14 and close other channels. At this time, the motor 3 will push the piston plate 5 to reset through the lead screw 4 and form a suction force to draw the inoculant inside the injection pipe 2 into the interior of the sprinkler plate 15 and spray it out through the spray hole to backwash the surface of the first filter screen 9 and the second filter screen 12. Finally, the waste discharge mechanism will discharge the washed particulate impurities along with the residual inoculant.

[0023] The limiting mechanism includes a fixed rod 16 fixed on the first mounting bracket 6, a connecting sleeve 17 adapted to the fixed rod 16 on the outer wall of the second mounting bracket 7, a fixed sleeve 18 adapted to the connecting sleeve 17 on the outer wall of the tank body 1, first limiting blocks 19 symmetrically arranged on the inner wall of the fixed rod 16, a first spring 20 connected between the two first limiting blocks 19, a push rod 21 connected to the inner wall of the fixed rod 16, two fixed plates 22 fixedly connected to the outer wall of the push rod 21, a first pressing block 23 fixedly connected to the outer wall of one end of the push rod 21, second limiting blocks 24 symmetrically arranged on the inner wall of the connecting sleeve 17, a second spring 25 connected between the two second limiting blocks 24, a connecting rod 26 connected to the inner wall of the connecting sleeve 17, a second pressing block 27 fixedly connected to the outer wall of one end of the connecting rod 26, and a first return spring 28 connected to the inner wall of the fixed sleeve 18.

[0024] In use, in the initial state, one end of the first limiting block 19 and the second limiting block 24 extend out of the interior of the fixing rod 16 and the connecting sleeve 17, respectively, and abut against one end of the connecting sleeve 17 and the fixing sleeve 18, thereby limiting the first mounting bracket 6 and the second mounting bracket 7 and preventing the inoculant from pushing the first limiting block 19 and the second limiting block 24 to move when passing through the first filter screen 9 and the second filter screen 12. When the piston plate 5 moves towards the fixing rod 16 and contacts the fixing plate 22, the piston plate 5 will push the push rod 21 to move through the fixing plate 22, causing the first pressing block 23 to press the surface of the first limiting block 19. At this time, the first limiting block 19 slides into the interior of the fixing rod 16 under the action of force and compresses the first spring 20. The first mounting bracket 6 can be released from its limiting position. At this time, the piston plate 5 can push the first mounting bracket 6 to move synchronously and drive the fixed rod 16 to slide into the connecting sleeve 17. When one end of the fixed rod 16 contacts the connecting rod 26, the fixed rod 16 will push the second pressing block 27 to press the surface of the second limiting block 24 through the connecting rod 26. At this time, the second limiting block 24 slides into the connecting sleeve 17 under the force and compresses the second spring 25, thus releasing the limiting position on the second mounting bracket 7. At this time, the piston plate 5 can push the first mounting bracket 6 and the second mounting bracket 7 to the surface of the sprinkler plate 15 and drive the connecting sleeve 17 to slide into the fixed sleeve 18, so that the connecting sleeve 17 compresses the first return spring 28.

[0025] A connecting block 29 is fixedly connected to the outer wall of the connecting sleeve 17. An oil storage tank 30 is provided on the inner wall of the connecting block 29. A push plate 31 is connected to the inner wall of the oil storage tank 30. A locking block 32 is connected to the inner wall of one end of the oil storage tank 30. A top plate 33 is connected to the outer wall of the push rod 21. A connecting column 34 is slidably connected to the outer wall of the top plate 33. A connecting spring 35 is fixedly connected to the outer wall of the connecting column 34. A contact 36 is fixedly connected to the outer wall of one end of the connecting spring 35. A connecting groove 37 is provided on the outer wall of one end of the fixed sleeve 18. A locking groove 38 is provided on the inner wall of the connecting groove 37.

[0026] When push rod 21 pushes the first extrusion block 23 to extrude the first limiting block 19, it will push the top plate 33 to extrude the connecting column 34, and cooperate with the fixing rod 16 to limit the connecting column 34, thereby pushing the connecting column 34, connecting spring 35 and contact 36 to move outward. When the fixing rod 16 slides into the interior of the connecting sleeve 17, the inner wall of the connecting sleeve 17 will push the contact 36 to extrude the connecting spring 35. After the fixing rod 16 is fully inside the connecting sleeve 17, the connecting spring 36 is forced to push the contact 35 to extrude the push plate 31, so that the push plate 31 extrudes the interior of the oil storage tank 30. Hydraulic oil can push the locking block 32 out of the interior of the connecting block 29. When the connecting sleeve 17 enters the interior of the fixing sleeve 18, the connecting block 29 will be locked into the interior of the connecting groove 37. During this process, the outer wall of the connecting groove 37 will squeeze the outer wall of the locking block 32 and squeeze the locking block 32 into the interior of the connecting block 29 and compress the connecting spring 35. When the connecting block 29 is fully inserted into the interior of the connecting groove 37, the connecting spring 35 is pushed by the force to push the locking block 32 into the interior of the locking groove 38, so that the first mounting bracket 6 can be fixed on the surface of the sprinkler plate 15 of the second mounting bracket 7. When the piston plate 5 comes into contact with the fixed plate 22 during the resetting process, the fixed plate 22 can pull the push rod 21 to move, so that the top plate 33 pulls the connecting column 34 to reset, so that the contact 36 releases the pressure on the push plate 31. In addition, with the trapezoidal setting of the slot 38, the push rod 21 can pull the fixed rod 16 and the connecting sleeve 17 to reset through the first pressing block 23.

[0027] The sewage discharge mechanism includes a connector 39 fixed to the outer wall of one side of the tank 1. A winding shaft 40 is connected to the inner wall of the connector 39. A first rope 41 adapted to the piston plate 5 is provided on the outer wall of the winding shaft 40. A spring 42 adapted to the connector 39 is provided on the outer wall of the winding shaft 40. A differential structure is provided on the outer wall of the winding shaft 40. A connecting shaft 43 is connected to the inner wall of the connector 39, and the connecting shaft 43 is connected to the winding shaft 40 through the differential structure. A second rope 44 is connected to the outer wall. A fixing block 45 is fixedly connected to the bottom outer wall of the tank body 1. A connecting plate 46 adapted to the second rope 44 is provided on the outer wall of the fixing block 45. A first torsion spring 47 adapted to the fixing block 45 is provided on the outer wall of the connecting plate 46. A sealing block 48 is fixedly connected to one end of the outer wall of the connecting plate 46. A drain port 49 adapted to the sealing block 48 is provided on the bottom outer wall of the tank body 1. A limit structure is provided on one end of the outer wall of the connecting shaft 43.

[0028] When the piston plate 5 compresses the inoculant, it pulls the winding shaft 40 to rotate via the first rope 41, applying torque to the spring 42. In conjunction with the differential mechanism, the winding shaft 40 does not drive the connecting shaft 43 to rotate before the piston plate 5 slides over the surface of the drain port 49. After the piston plate 5 slides over the surface of the drain port 49, its continued movement causes the winding shaft 40 to drive the connecting shaft 43 to rotate synchronously via the differential mechanism, thus winding up the second rope 44. The second rope 44 pulls one end of the connecting plate 46, causing the connecting plate 46 to rotate on the surface of the fixed block 45 and apply torque to the first torsion spring 47. Through the rotation of the connecting plate 46 on the surface of the fixed block 45, the sealing block 48 can be driven to release the limit on the drain port 49, and through the limit structure, the connecting shaft 43 is limited, so that the connecting shaft 43 will not rotate before the piston plate 5 is fully reset, ensuring that the particulate impurities and residual inoculant inside the tank 1 can be smoothly discharged from the drain port 49.

[0029] The differential structure includes a drive shaft 50 rotatably connected to the outer wall of the connecting member 39, a drive rod 51 connected to the inner wall of the drive shaft 50, a protrusion 52 fixedly connected to the outer wall of one end of the drive rod 51, a guide groove 53 adapted to the protrusion 52 provided on the inner wall of the connecting shaft 43, a drive wheel 54 fixedly connected to the outer wall of the winding shaft 40, a drive wheel 55 connected to the outer wall of the drive shaft 50, the drive wheel 54 and the drive wheel 55 being connected by a belt 56, toothed grooves 57 evenly distributed on the outer wall of one end of the drive shaft 50, a pawl 58 connected to the outer wall of the drive wheel 55, a spring plate 59 connected to the outer wall of the drive wheel 55, and a limit rod 60 connected to the outer wall of the drive wheel 55.

[0030] When the piston plate 5 is pressing the inoculant, the winding shaft 40 drives the drive wheel 54 to rotate. When the drive wheel 54 rotates, it drives the transmission wheel 55 and the transmission shaft 50 to rotate synchronously through the belt 56. When the transmission wheel 55 rotates, it drives the pawl 58 to move. Through the meshing of the pawl 58 with the tooth groove 57, and with the limit rod 60 limiting the pawl 58, the transmission wheel 55 drives the transmission shaft 50 to rotate. When the transmission shaft 50 rotates, it can drive the transmission rod 51 to rotate. With the connection between the protrusion 52 and the guide groove 53, when the transmission shaft 50 rotates, the protrusion 52 will move along the surface of the guide groove 53 and pull the transmission rod 51 to slide into the interior of the connecting shaft 43. When the protrusion 52 moves to the other end of the guide groove 53, the piston plate 5 will slide across the surface of the drain port 49, and the transmission shaft 50 will drive the connecting shaft 43 to rotate through the transmission rod 51 and the protrusion 52, and wind up the second rope 44. When the piston plate 5 is reset, the spring 42 is subjected to force to push the winding shaft 40 to rotate in the opposite direction and wind up the first rope 41. At this time, the drive wheel 54 drives the transmission wheel 55 to rotate in the opposite direction through the belt 56. During this process, the tooth groove 57 will push the pawl 58 to rotate and squeeze the spring plate 59, but will not drive the transmission shaft 50 to rotate.

[0031] The limiting structure includes a gear 61 fixed on the outer wall of one end of the connecting shaft 43, a slide rod 62 slidably connected to the inner wall of the connecting member 39, a second return spring 63 connected to the outer wall of one end of the slide rod 62, a toothed block 64 connected to the inner wall of the slide rod 62, a one-way rotation groove 65 adapted to the toothed block 64 provided on the outer wall of the slide rod 62, and a second torsion spring 66 adapted to the slide rod 62 provided on the outer wall of the toothed block 64.

[0032] When the piston plate 5 squeezes the inoculant, it releases the pressure on the slide bar 62. At this time, the second return spring 63 is pushed by the force to reset the slide bar 62, so that the tooth block 64 meshes with the gear 61. When the connecting shaft 43 winds up the second rope 44, the gear 61 pushes the tooth block 64 to rotate inside the one-way rotation groove 65 and applies a torque to the second torsion spring 66. When the gear 61 stops rotating, the second torsion spring 66 is pushed by the force to reset the tooth block 64 and re-mesh with the gear 61. In conjunction with the one-way rotation groove 65, the tooth block 64 is unidirectionally limited, so that the gear 61 does not rotate in the opposite direction. When the piston plate 5 returns to its initial position, it will push the slide rod 62 to move and compress the second return spring 63. At this time, the tooth block 64 will separate from the gear 61 and release the limit on the gear 61. At this time, the first torsion spring 47 will be pushed by the force to reset the connecting plate 46, so that the sealing block 48 limits the drain port 49. During this process, one end of the connecting plate 46 will pull the second rope 44 and drive the connecting shaft 43 to rotate, so that the second rope 44 is pulled out from the surface of the connecting shaft 43.

[0033] A casting process for a flow-inoculation casting device suitable for large workbench castings includes the following steps: S1: First, inject the inoculant into tank 1, and keep tank 1 away from the pouring ladle to prevent the inoculant from being exposed to a high temperature environment for a long time, which would cause the inoculant particles to become brittle and break. S2: Then, the piston plate 5 is driven by the motor 3 and the lead screw 4 to push the inoculant into the injection pipe 2 for injection. During this process, the first filter screen 9 and the second filter screen 12 will filter the inoculant one after the other to remove particulate impurities in the inoculant. S3: While the piston plate 5 squeezes all the inoculant into the injection pipe 2, it will push the first filter screen 9 and the second filter screen 12 to move. At this time, the limiting mechanism will close the first filter screen 9 and the second filter screen 12 and fix them on the surface of the spray plate 15. S4: Next, control the motor 3 to rotate in the opposite direction to push the piston plate 5 to reset, and cooperate with the three-way valve 13 to draw the inoculant inside the injection pipe 2 into the interior of the spray plate 15, and spray it out through the spray hole to backwash the surface of the first filter screen 9 and the second filter screen 12. S5: Activate the sewage discharge mechanism to discharge the particulate impurities flushed out along with the residual inoculant.

[0034] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A flow-inoculation casting device suitable for large workbench castings, comprising a tank (1), wherein a pouring pipe (2) is connected to one outer wall of the tank (1), characterized in that: A filter assembly is provided on the inner wall of the tank (1); The filter assembly includes a motor (3) mounted on the outer wall of the tank (1), a lead screw (4) connected to the outer wall of the motor (3), a piston plate (5) threaded onto the outer wall of the lead screw (4), a sewage discharge mechanism provided on the outer wall of the piston plate (5), a first mounting bracket (6) and a second mounting bracket (7) connected to the inner wall of the tank (1), a guide rod (8) fixedly connected to the inner wall of the tank (1), a first filter screen (9) connected to the outer wall of the first mounting bracket (6), and a matching screw (4) provided on the outer walls of both the first mounting bracket (6) and the second mounting bracket (7). The rotating sleeve (10) on the first mounting bracket (6) has a scraper (11) fixedly connected to its surface. The second mounting bracket (7) has a second filter screen (12) connected to its outer wall. The first mounting bracket (6) and the second mounting bracket (7) have a limit mechanism on their outer walls. The injection pipe (2) has a three-way valve (13) connected to its outer wall. One end of the three-way valve (13) has a connecting pipe (14) connected to its outer wall. One end of the tank (1) has a water spraying plate (15) adapted to the connecting pipe (14) on its inner wall. The water spraying plate (15) has spray holes evenly distributed on its outer wall.

2. The in-flow inoculation and pouring device for large workbench castings according to claim 1, characterized in that: The piston plate (5), the first mounting bracket (6), and the second mounting bracket (7) are all slidably connected to the guide rod (8), and one end of the screw (4) is fixedly connected to the sprinkler plate (15).

3. The in-flow inoculation and pouring device for large workbench castings according to claim 1, characterized in that: The limiting mechanism includes a fixed rod (16) fixed on a first mounting bracket (6), a connecting sleeve (17) adapted to the fixed rod (16) on the outer wall of the second mounting bracket (7), a fixed sleeve (18) adapted to the connecting sleeve (17) on the outer wall of the tank body (1), first limiting blocks (19) symmetrically arranged on the inner wall of the fixed rod (16), a first spring (20) connected between the two first limiting blocks (19), and a push rod (21) connected to the inner wall of the fixed rod (16). Two fixing plates (22) are fixedly connected to the outer wall of the push rod (21). A first pressing block (23) is fixedly connected to the outer wall of one end of the push rod (21). A second limiting block (24) is symmetrically arranged on the inner wall of the connecting sleeve (17). A second spring (25) is connected between the two second limiting blocks (24). A connecting rod (26) is connected to the inner wall of the connecting sleeve (17). A second pressing block (27) is fixedly connected to the outer wall of one end of the connecting rod (26). A first reset spring (28) is connected to the inner wall of the fixing sleeve (18).

4. The in-flow inoculation and pouring device for large workbench castings according to claim 3, characterized in that: A connecting block (29) is fixedly connected to the outer wall of the connecting sleeve (17). An oil storage tank (30) is provided on the inner wall of the connecting block (29). A push plate (31) is connected to the inner wall of the oil storage tank (30). A locking block (32) is connected to the inner wall of one end of the oil storage tank (30). A top plate (33) is connected to the outer wall of the push rod (21). A connecting column (34) is slidably connected to the outer wall of the top plate (33). A connecting spring (35) is fixedly connected to the outer wall of the connecting column (34). A contact (36) is fixedly connected to the outer wall of one end of the connecting spring (35). A connecting groove (37) is provided on the outer wall of one end of the fixed sleeve (18). A locking groove (38) is provided on the inner wall of the connecting groove (37).

5. The in-flow inoculation and pouring device for large workbench castings according to claim 4, characterized in that: The slot (38) is trapezoidal, and the contact (36) is slidably connected to the fixing rod (16) through the push rod (21), the top plate (33), the connecting column (34) and the connecting spring (35).

6. The in-flow inoculation and pouring device for large workbench castings according to claim 1, characterized in that: The sewage discharge mechanism includes a connector (39) fixed to the outer wall of one side of the tank (1). A winding shaft (40) is connected to the inner wall of the connector (39). A first rope (41) adapted to the piston plate (5) is provided on the outer wall of the winding shaft (40). A spring (42) adapted to the connector (39) is provided on the outer wall of the winding shaft (40). A differential structure is provided on the outer wall of the winding shaft (40). A connecting shaft (43) is connected to the inner wall of the connector (39), and the connecting shaft (43) is connected to the winding shaft (40) through the differential structure. A second rope (44) is connected to the outer wall of the tank (1). A fixing block (45) is fixedly connected to the bottom outer wall of the tank (1). A connecting plate (46) adapted to the second rope (44) is provided on the outer wall of the fixing block (45). A first torsion spring (47) adapted to the fixing block (45) is provided on the outer wall of the connecting plate (46). A sealing block (48) is fixedly connected to one end of the outer wall of the connecting plate (46). A drain outlet (49) adapted to the sealing block (48) is provided on the bottom outer wall of the tank (1). A limit structure is provided on one end of the outer wall of the connecting shaft (43).

7. A flow-inoculation casting device suitable for large workbench castings according to claim 6, characterized in that: The differential structure includes a drive shaft (50) rotatably connected to the outer wall of the connector (39), a drive rod (51) connected to the inner wall of the drive shaft (50), a protrusion (52) fixedly connected to the outer wall of one end of the drive rod (51), a guide groove (53) adapted to the protrusion (52) provided on the inner wall of the connecting shaft (43), a drive wheel (54) fixedly connected to the outer wall of the take-up shaft (40), a drive wheel (55) connected to the outer wall of the drive shaft (50), the drive wheel (54) and the drive wheel (55) connected by a belt (56), toothed grooves (57) evenly distributed on the outer wall of one end of the drive shaft (50), a pawl (58) connected to the outer wall of the drive wheel (55), a spring plate (59) connected to the outer wall of the drive wheel (55), and a limit rod (60) connected to the outer wall of the drive wheel (55).

8. A flow-inoculation casting device suitable for large workbench castings according to claim 6, characterized in that: The limiting structure includes a gear (61) fixed on the outer wall of one end of the connecting shaft (43), a slide rod (62) slidably connected to the inner wall of the connecting member (39), a second return spring (63) connected to the outer wall of one end of the slide rod (62), a toothed block (64) connected to the inner wall of the slide rod (62), a one-way rotating groove (65) adapted to the toothed block (64) provided on the outer wall of the slide rod (62), and a second torsion spring (66) adapted to the slide rod (62) provided on the outer wall of the toothed block (64).

9. The casting process of a flow-inoculation casting device suitable for large workbench castings according to claim 1, comprising the following steps: S1: First, inject the inoculant into the tank (1), and keep the tank (1) away from the pouring ladle to prevent the inoculant from being in a high-temperature environment for a long time, which would cause the inoculant particles to become brittle and break. S2: Then, the piston plate (5) is driven by the motor (3) and the screw (4) to push the inoculant into the injection pipe (2) for injection. During this process, the first filter screen (9) and the second filter screen (12) will filter the inoculant one after another to remove particulate impurities in the inoculant. S3: While the piston plate (5) squeezes all the inoculant into the injection pipe (2), it will push the first filter screen (9) and the second filter screen (12) to move. At this time, the first filter screen (9) and the second filter screen (12) are closed and fixed on the surface of the spray plate (15) by the limiting mechanism. S4: Then control the motor (3) to rotate in the opposite direction to push the piston plate (5) to reset, and cooperate with the three-way valve (13) to draw the inoculant inside the injection pipe (2) into the interior of the water spray plate (15), and spray it out through the spray hole to backwash the surface of the first filter screen (9) and the second filter screen (12); S5: Activate the sewage discharge mechanism to discharge the particulate impurities flushed out along with the residual inoculant.

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