A high-precision silicon sol shell production equipment for ball valves

Abstract

This invention relates to the field of casting mold making technology, and discloses a high-precision silica sol shell-making equipment for ball valve production. The equipment includes a mounting frame, a slurry tank fixedly connected to the top of the mounting frame, and a circulating pump fixedly connected to the bottom of the mounting frame. The circulating pump is used to pump the slurry inside the slurry tank. An automatic cleaning mechanism is provided on the outside of the mounting frame, and a filtering mechanism is provided on the side of the automatic cleaning mechanism away from the mounting frame. The filtering mechanism is used to filter the slurry, and the automatic cleaning mechanism is used to automatically clean the filtering mechanism. A replacement mechanism is provided on the outside of the filtering mechanism, and an anti-vortex stirring mechanism is provided in the middle of the mounting frame. The filtering mechanism automatically filters the slurry in the tank, preventing impurities such as wax residue and sand particles from easily mixing into the open slurry tank of the slurry dipping machine, thus avoiding contamination of the slurry and further preventing sand inclusions and surface defects in the ball valve castings, improving shell-making quality. No manual filtration is required, improving slurry dipping efficiency and enabling continuous production.

Description

Technical Field

[0001] This invention relates to the field of casting mold making technology, specifically to a high-precision silica sol shell making equipment for ball valve production. Background Technology

[0002] The high-precision silica sol coating machine for ball valve production features an open, vertical lifting structure and is a core piece of equipment in the precision casting coating process, as well as a crucial step in the casting island. The main body of the equipment consists of a stainless steel open-top slurry tank, a vertical lifting column, a stirring mechanism, and an electrical control system. It automatically completes the entire process of uniform slurry dipping, dwell, and lifting / draining by holding the ball valve wax mold assembly via the lifting arm. It is adaptable to manual mold hanging or automated loading and unloading by a robotic arm. Its core advantage lies in precisely controlling the coating parameters, ensuring uniform adhesion of the silica sol refractory slurry to the surface of the ball valve body and ball, effectively avoiding defects such as missed areas and bubbles, thus guaranteeing the subsequent high-precision casting. It is a standard piece of equipment in ball valve silica sol coating lines.

[0003] In existing high-precision silica sol shell-making equipment for ball valve production, the open slurry tank in the slurry dipping machine is prone to mixing in impurities such as wax flakes and sand particles, which contaminate the slurry and cause sand inclusions and surface defects in the ball valve castings, affecting the shell-making quality; while manual filtration is inefficient and cannot be used for continuous production. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a high-precision silica sol shell-making device for ball valve production. This device solves the problems of impurities such as wax flakes and sand particles easily getting mixed into the slurry in the dipping machine, which contaminates the slurry and affects the shell-making quality; and the low efficiency and inability to continuously produce using manual filtration.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a high-precision silica sol shell-making device for ball valve production, comprising a mounting frame, a slurry tank fixedly connected to the top of the mounting frame, a circulating pump fixedly connected to the bottom of the mounting frame, the circulating pump being used to pump the slurry inside the slurry tank, an automatic cleaning mechanism being provided on the outside of the mounting frame, a filtering mechanism being provided on the side of the automatic cleaning mechanism away from the mounting frame, the filtering mechanism being used to filter the slurry, the automatic cleaning mechanism being used to automatically clean the filtering mechanism, a replacement mechanism being provided on the outside of the filtering mechanism, an anti-vortex stirring mechanism being provided in the middle of the mounting frame, the anti-vortex stirring mechanism stirring the internal slurry while preventing the formation of vortices, a blocking frame being provided inside the slurry tank, and a lifting arm being fixedly connected to one side of the top of the mounting frame.

[0006] Preferably, the filtration mechanism includes a fixed bucket, a rotating shaft rotatably connected to the middle of the fixed bucket, a filter roller slidably connected to the outside of the rotating shaft, a plurality of blocking strips fixedly connected to the outside of the filter roller, a shell fixedly connected to one side of the fixed bucket, a rotating wheel fixedly connected to one end of the rotating shaft, the rotating wheel being disposed inside the shell, two connecting pipes fixedly connected to the outside of the fixed bucket, a connecting pipe fixedly connected between the upper connecting pipe and one bottom end of the shell, a slurry inlet pipe fixedly connected to the other bottom end of the shell, and a slurry outlet pipe fixedly connected to the bottom of the lower connecting pipe, the other end of the slurry outlet pipe being fixedly connected to the inside of the slurry dipping bucket.

[0007] Preferably, the automatic cleaning mechanism includes a container, one side of which is fixedly connected to the outside of the mounting frame, and the other end of which is fixedly connected to the outside of the fixed bucket. Sliding grooves are provided inside both sides of the container, and sliders are slidably connected inside the sliding grooves. A retaining spring is provided inside the sliding grooves. A shovel plate is fixedly connected between the two sliders and is located inside the container. An installation groove is provided at the bottom of the container, and a torsion spring is provided inside the installation groove.

[0008] Preferably, the replacement mechanism includes two fixed seats, which are respectively fixedly connected to the outer ends of the fixed barrel. A sliding rod is slidably connected inside the fixed seat. One end of the sliding rod is fixedly connected to a limit plate, and the other end of the sliding rod is fixedly connected to a fixed cylinder. A tension spring is sleeved on the outside of the sliding rod. One end of the tension spring is fixedly connected to one end of the limit plate, and the other end of the tension spring is fixedly connected to one end of the fixed seat. A rotating pin is rotatably connected inside the fixed cylinder. A torsion spring is provided inside the fixed cylinder. A locking rod is rotatably connected to the outside of the rotating pin. A locking plate is fixedly connected to the end of the locking rod away from the fixed seat. A cover is provided at the end of the fixed barrel away from the outer shell. Two locking grooves are formed on the outside of the cover, and the locking plate engages with the locking grooves.

[0009] Preferably, the anti-vortex stirring mechanism includes a mounting box, the top of which is fixedly connected to the bottom of the mounting frame. Multiple rotating columns are rotatably connected inside the mounting box, and driving gears are fixedly connected to the outside of each rotating column. All driving gears are located inside the mounting box. Multiple intermediate gears are located inside the mounting box and positioned between the driving gears. A stirring blade is fixedly connected to the top of each rotating column and is located at the bottom of the slurry-dipping tank. A fixed box is fixedly connected to the bottom of the mounting box, and an impeller is rotatably connected inside the fixed box. The middle part of the impeller is connected to the bottom of the middle rotating column. A slurry-drawing pipe is fixedly connected to the input end of the circulating pump, and the other end of the slurry-drawing pipe is fixedly connected to the bottom of the slurry-dipping tank. A slurry-passing pipe is fixedly connected to the output end of the circulating pump, and the other end of the slurry-passing pipe is fixedly connected to one end of the fixed box. The other end of the fixed box is fixedly connected to the bottom of the slurry-inlet pipe.

[0010] Preferably, a slurry discharge pipe is fixedly connected to the bottom of the outer shell, and a sealing cap is threadedly connected to the bottom of the slurry discharge pipe. The filter roller is disposed inside the fixed barrel.

[0011] Preferably, one end of the clamping spring is fixedly connected to the bottom of the slider, and the other end of the clamping spring is fixedly connected to the inside of the groove.

[0012] Preferably, the bottom of the container is provided with a storage groove, and a hopper is slidably connected inside the storage groove. A circular plate is fixedly connected to one end of the hopper, and a rotating rod is rotatably connected to the bottom of the container. A blocking plate is fixedly connected to one end of the rotating rod.

[0013] Preferably, one end of the torsion spring is fixedly connected to the outside of the rotating rod, and the other end of the torsion spring is fixedly connected to the inside of the mounting groove.

[0014] Preferably, one end of the second torsion spring is fixedly connected to the inside of the fixed cylinder, and the other end of the second torsion spring is fixedly connected to the outside of the rotating pin.

[0015] This invention provides a high-precision silica sol shell-making device for ball valve production. It has the following beneficial effects: 1. This invention can automatically filter the slurry in the tank through a filtration mechanism, avoiding the easy mixing of impurities such as wax flakes and sand particles into the open slurry tank of the slurry dipping machine, which would contaminate the slurry. This further avoids sand inclusions and surface defects in ball valve castings, improving the shell-making quality. No manual filtration is required, which improves the slurry dipping efficiency and enables continuous production.

[0016] 2. The present invention can avoid the uneven flow rate of the slurry at different positions of the ball valve wax mold by using an anti-vortex stirring mechanism, thus avoiding the high flow rate at the center and the slow flow rate at the edge of the slurry. This also avoids the difference in coating thickness and prevents the vortex generated by stirring from easily introducing air bubbles, thereby improving the quality of the mold shell. Attached Figure Description

[0017] Figure 1 The three-dimensional representation of the present invention Figure 1 ; Figure 2 The three-dimensional representation of the present invention Figure 2 ; Figure 3 The three-dimensional representation of the present invention Figure 3 ; Figure 4 This is a schematic diagram of the filtration mechanism in this invention; Figure 5 This is a schematic diagram of the internal structure of the outer shell in this invention; Figure 6 This is a schematic diagram of the internal structure of the fixed bucket in this invention; Figure 7 This is a schematic diagram of the filter roller structure in this invention; Figure 8 This is a schematic diagram of the rotating shaft in this invention; Figure 9 This is a schematic diagram of the internal structure of the side of the packing box in this invention; Figure 10 This is a schematic diagram of the shovel plate in this invention; Figure 11 This is a schematic diagram of the structure of the storage tank in this invention; Figure 12 This is a schematic diagram of the structure of the hopper in this invention; Figure 13 This is a schematic diagram of the internal structure of the bottom end of the packing box in this invention; Figure 14 This is a schematic diagram of the replacement mechanism in this invention; Figure 15 This is a schematic diagram of the cap structure in this invention; Figure 16 This is a schematic diagram of the anti-vortex stirring mechanism in this invention; Figure 17 This is a schematic diagram of the internal structure of the fixing box in this invention.

[0018] The components include: 1. Mounting frame; 2. Dipping tank; 3. Circulating pump; 4. Filtering mechanism; 401. Fixed tank; 402. Rotating shaft; 403. Filter roller; 404. Blocking strip; 405. Outer shell; 406. Rotating wheel; 407. Connecting pipe; 408. Connecting pipe; 409. Slurry inlet pipe; 410. Slurry outlet pipe; 411. Slurry discharge pipe; 5. Automatic cleaning mechanism; 501. Loading box; 502. Slide chute; 503. Sliding block; 504. Holding spring; 505. Shovel plate; 506. Loading trough; 507. Loading hopper; 508. Circular plate; 509. Mounting groove; 510. Rotating rod. 511. Torsion Spring 1; 512. Baffle Plate; 6. Replacement Mechanism; 601. Fixed Base; 602. Sliding Rod; 603. Limiting Plate; 604. Tension Spring; 605. Fixed Cylinder; 606. Rotating Pin; 607. Torsion Spring 2; 608. Locking Rod; 609. Locking Plate; 610. Cover; 611. Locking Slot; 7. Anti-vortex Agitation Mechanism; 701. Mounting Box; 702. Rotating Column; 703. Drive Gear; 704. Intermediate Gear; 705. Agitator Blade; 706. Fixed Box; 707. Impeller; 708. Slurry Pumping Pipe; 709. Slurry Passing Pipe; 8. Baffle Frame; 9. Lifting Arm. Detailed Implementation

[0019] The technical solutions in 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 skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see the appendix Figure 1 -Appendix Figure 17 This invention provides a high-precision silica sol shell-making device for ball valve production, including a mounting frame 1. A slurry tank 2 is fixedly connected to the top of the mounting frame 1, and a circulation pump 3 is fixedly connected to the bottom of the mounting frame 1. The circulation pump 3 is used to pump the slurry inside the slurry tank 2. An automatic cleaning mechanism 5 is provided on the outside of the mounting frame 1. A filter mechanism 4 is provided on the side of the automatic cleaning mechanism 5 away from the mounting frame 1. The filter mechanism 4 is used to filter the slurry. The automatic cleaning mechanism 5 is used to automatically clean the filter mechanism 4. A replacement mechanism 6 is provided on the outside of the filter mechanism 4. An anti-vortex stirring mechanism 7 is provided in the middle of the mounting frame 1. The anti-vortex stirring mechanism 7 stirs the internal slurry and can prevent the formation of vortices. A blocking frame 8 is provided inside the slurry tank 2. A lifting arm 9 is fixedly connected to one side of the top of the mounting frame 1.

[0021] The filtration mechanism 4 includes a fixed barrel 401, which provides an installation position. A rotating shaft 402 is rotatably connected to the middle of the fixed barrel 401. A filter roller 403 is slidably connected to the outside of the rotating shaft 402. The rotating shaft 402 can install the filter roller 403 and drive the filter roller 403 to rotate. Multiple blocking strips 404 are fixedly connected to the outside of the filter roller 403. The blocking strips 404 can fit tightly against the inner wall of the fixed barrel 401, so that when the filter roller 403 rotates, it can drive impurities towards the automatic cleaning mechanism 5, thus preventing impurities from being removed. The slurry falls into the bottom of the fixed bucket 401. A housing 405 is fixedly connected to one side of the fixed bucket 401, providing the installation position while allowing the slurry to flow inside. A rotating wheel 406 is fixedly connected to one end of the rotating shaft 402, allowing it to rotate as the slurry flows. The rotating wheel 406 is located inside the housing 405. Two connecting pipes 407 are fixedly connected to the outside of the fixed bucket 401. A connecting pipe 408 is fixedly connected between the upper connecting pipe 407 and the bottom end of the housing 405. The bottom of the outer casing 405 is fixedly connected to a slurry inlet pipe 409. A slurry outlet pipe 411 is fixedly connected to the bottom of the lower connecting pipe 407. The other end of the slurry outlet pipe 411 is fixedly connected to the inside of the slurry dipping tank 2. A slurry discharge pipe 410 is fixedly connected to the bottom of the outer casing 405. The slurry discharge pipe 410 can discharge the remaining slurry in the outer casing 405. A sealing cap is threaded to the bottom of the slurry discharge pipe 410, which can block the slurry discharge pipe 410. The filter roller 403 is located inside the fixed tank 401. When the circulation pump 3 is started, liquid can be drawn into the output end of the circulation pump 3. The liquid passes through the anti-vortex stirring mechanism 7 and is then transported to the inside of the slurry inlet pipe 409, allowing the liquid to flow inside the outer shell 405. This flow drives the rotating wheel 406 to rotate, which in turn drives the rotating shaft 402 to rotate, thereby driving the filter roller 403 to rotate. Simultaneously, the liquid enters the fixed tank 401 through the connecting pipe 408, is filtered by the filter roller 403, and then enters the slurry dipping tank 2 through the slurry discharge pipe 411, thus achieving slurry circulation filtration.

[0022] The automatic cleaning mechanism 5 includes a storage box 501, which stores impurities scraped off the filter roller 403. One side of the storage box 501 is fixedly connected to the outside of the mounting frame 1, and the other end is fixedly connected to the outside of the fixed bucket 401. Both sides of the storage box 501 have internal grooves 502, and sliders 503 are slidably connected inside the grooves 502. The grooves 502 provide both the installation position and the sliding position for the sliders 503. A retaining spring 504 is installed inside the grooves 502. A scraper plate 505 is fixedly connected between the two sliders 503. After the sliders 503 slide inside the grooves 502, the stability of the scraper plate 505 is improved. Simultaneously, the retaining spring 504 can utilize its own... The reaction force pushes the shovel plate 505 tightly against the outer surface of the filter roller 403. The shovel plate 505 is set inside the loading box 501. The bottom of the loading box 501 has an installation groove 509, which provides an installation position. A torsion spring 511 is set inside the installation groove 509. One end of the clamping spring 504 is fixedly connected to the bottom of the slider 503, and the other end of the clamping spring 504 is fixedly connected to the inside of the slide groove 502. The bottom end of the loading box 501 has a loading groove 506, which provides an installation position. A loading hopper 507 is slidably connected inside the loading groove 506. The loading hopper 507 can catch impurities at the bottom of the loading box 501. At the same time, when the loading hopper 507 is pulled out of the loading box 501, it can be easily... The interior of the storage box 501 is cleaned. A circular plate 508 is fixedly connected to one end of the hopper 507, blocking the storage slot 506 to prevent impurities from falling out of the storage box 501. A rotating rod 510 is rotatably connected to the bottom of the storage box 501, rotating only at the bottom. A baffle plate 512 is fixedly connected to one end of the rotating rod 510, blocking the circular plate 508 to prevent it from causing the hopper 507 to slide out of the storage box 501. Rotating the baffle plate 512 downwards causes the rotating rod 510 to rotate and compresses the torsion spring 511. When the baffle plate 512 rotates away from the outside of the circular plate 508, it can then... Plate 508 is pulled outwards from the loading box 501, which in turn causes the loading hopper 507 to slide out of the loading groove 506, thereby removing impurities from the loading box 501 and facilitating the cleaning of impurities inside the loading box 501. One end of torsion spring 511 is fixedly connected to the outside of the rotating rod 510, and the other end of torsion spring 511 is fixedly connected to the inside of the mounting groove 509. When the filter roller 403 rotates to the shovel plate 505, the shovel plate 505 can scrape off the impurities on the filter roller 403 and collect them into the loading box 501. When the blocking bar 404 passes through the shovel plate 505, it can drive the shovel plate 505 to move downwards, causing the slider 503 to move downwards and compressing the clamping spring 504.When the scraper plate 505 moves away from the blocking strip 404, the reaction force of the clamping spring 504 causes the slider 503 and the scraper plate 505 to return to their original positions. Simultaneously, the clamping spring 504 provides a reaction force to the scraper plate 505, ensuring it adheres tightly to the filter roller 403, thus improving the cleaning effect.

[0023] The replacement mechanism 6 includes two fixed seats 601, which provide an installation position. The two fixed seats 601 are respectively fixedly connected to the outer ends of the fixed barrel 401. A sliding rod 602 is slidably connected inside each fixed seat 601, serving a connecting function. One end of the sliding rod 602 is fixedly connected to a limiting plate 603, and the other end is fixedly connected to a fixed cylinder 605. A tension spring 604 is sleeved on the outside of the sliding rod 602. The limiting plate 603, in conjunction with the fixed seat 601, can fix both ends of the tension spring 604. One end of the spring 604 is fixedly connected to one end of the limiting plate 603, and the other end of the tension spring 604 is fixedly connected to one end of the fixed base 601. A rotating pin 606 is rotatably connected inside the fixed cylinder 605. The rotating pin 606 serves as a connection and also as a pivot. A second torsion spring 607 is installed inside the fixed cylinder 605. The second torsion spring 607 keeps the locking rod 608 parallel to the sliding rod 602. The locking rod 608 is rotatably connected to the outside of the rotating pin 606. A locking plate 609 is fixedly connected to the end of the locking rod 608 away from the fixed base 601. The fixed cylinder 401... A cover 610 is provided at the end away from the outer casing 405. Two slots 611 are formed on the outside of the cover 610. A locking plate 609 can engage inside the slots 611. The tension spring 604 applies a pulling force towards the limiting plate 603, sliding rod 602, rotating pin 606, locking rod 608, and locking plate 609, thereby tightly pulling the cover 610 to the end of the fixed cylinder 401 away from the outer casing 405. The locking plate 609 engages with the slots 611. One end of the second torsion spring 607 is fixedly connected to the inside of the fixed cylinder 605. The other end of 7 is fixedly connected to the outside of the rotating pin 606. When replacing the filter roller 403, first pull the clamping plate 609 away from the fixed seat 601, so that the fixed cylinder 605, the sliding rod 602 and the limiting plate 603 can move towards the cover 610, and make the clamping plate 609 leave the inside of the clamping groove 611. At the same time, the limiting plate 603 can compress the tension spring 604, and then the cover 610 can be removed and the filter roller 403 can be pulled out of the rotating shaft 402. The replacement steps are reversed, so that the replacement of the filter roller 403 can be completed.

[0024] The anti-vortex stirring mechanism 7 includes a mounting box 701, which provides an installation position. The top of the mounting box 701 is fixedly connected to the bottom of the mounting frame 1. Multiple rotating columns 702 are rotatably connected inside the mounting box 701, transmitting rotational force. Drive gears 703 are fixedly connected to the outside of the rotating columns 702. All drive gears 703 are located inside the mounting box 701. Multiple intermediate gears 704 are also located inside the mounting box 701. Rotation of the intermediate drive gear 703 drives the intermediate gear 704 to rotate, and the rotation of the intermediate gear 704 drives the other drive gears 703 to rotate. 4. A stirring blade 705 is fixedly connected to the top of the rotating column 702, positioned between multiple driving gears 703. The rotation of the rotating column 702 drives the stirring blade 705 to rotate, allowing for multi-directional rotation within the slurry tank 2. This avoids unidirectional, single-blade stirring, preventing the slurry from flowing too fast at the center and too slow at the edges. This further prevents uneven slurry flow at different points on the wax mold, thus avoiding coating thickness differences and preventing air bubbles from being introduced, thereby improving the quality of the mold shell. The stirring blade 705 is located at the bottom of the slurry tank 2. A fixing box 706 is fixedly connected to the bottom of the mounting box 701, providing an installation position and fixing... An impeller 707 is rotatably connected inside the fixed box 706. The impeller 707 can rotate under the flow of slurry. Since the fixed box 706 is directly connected to the output end of the circulating pump 3, there is no structure that consumes the slurry flow power, thus the circulating pump 3 can provide sufficient power. The middle part of the impeller 707 is connected to the bottom of the central rotating column 702. A slurry suction pipe 708 is fixedly connected to the input end of the circulating pump 3. The slurry suction pipe 708 can connect the bottom of the slurry dipping tank 2 and the input end of the circulating pump 3. The other end of the slurry suction pipe 708 is fixedly connected to the bottom of the slurry dipping tank 2. A slurry passage pipe 709 is fixedly connected to the output end of the circulating pump 3. The other end of the slurry passage pipe 709 is fixedly connected to the fixed box. One end of the outer part of the fixed box 706 is fixedly connected to the bottom of the slurry inlet pipe 409. When the slurry passes through the impeller 707, it can drive the impeller 707 to rotate, thereby driving the rotating column 702 to rotate, and driving the driving gear 703 to rotate. Through the intermediate gear 704, it drives the other driving gears 703 to rotate, and drives multiple stirring blades 705 to rotate. This allows the slurry in the slurry tank 2 to be stirred from multiple directions, thereby avoiding the uneven flow rate of the slurry at the center and the edge, and the uneven flow rate of the slurry in contact with different positions of the ball valve wax mold, which would lead to differences in coating thickness. At the same time, it avoids the eddies generated by stirring from easily carrying in air bubbles, which would affect the quality of the mold shell.

[0025] Working principle: When the circulation pump 3 is started, liquid can be drawn into the output end of the circulation pump 3 and passed through the anti-vortex stirring mechanism 7. The liquid is then transmitted to the inside of the slurry inlet pipe 409 through the anti-vortex stirring mechanism 7, so that the liquid can flow inside the outer shell 405. This can drive the rotating wheel 406 to rotate. After the rotating wheel 406 rotates, it can drive the rotating shaft 402 to rotate, which can drive the filter roller 403 to rotate. At the same time, the liquid will enter the inside of the fixed tank 401 through the connecting pipe 408, be filtered by the filter roller 403, and then enter the inside of the slurry dipping tank 2 through the slurry discharge pipe 411, thus realizing the circulation and filtration of the slurry. When the filter roller 403 rotates to the shovel plate 505, the shovel plate 505 can scrape off the impurities on the filter roller 403 and collect them into the storage box 501. When the blocking bar 404 passes the shovel plate 505, it can drive the shovel plate 505 to move downward, and drive the slider 503 to move downward, and compress the clamping spring 504. When the shovel plate 505 leaves the blocking bar 404, the slider 503 and the shovel plate 505 are reset under the action of the reaction force of the clamping spring 504. At the same time, the clamping spring 504 can give the shovel plate 505 a reaction force, so that the shovel plate 505 sticks tightly to the filter roller 403, improving the cleaning effect. When replacing the filter roller 403, first pull the clamping plate 609 away from the fixed seat 601, which will drive the fixed cylinder 605, sliding rod 602 and limiting plate 603 to move towards the cover 610, and make the clamping plate 609 leave the inside of the clamping groove 611. At the same time, the limiting plate 603 can compress the tension spring 604. Then, the cover 610 can be removed and the filter roller 403 can be pulled out of the rotating shaft 402. The replacement steps are reversed, so that the replacement of the filter roller 403 can be completed. When the slurry passes through the impeller 707, it drives the impeller 707 to rotate, which in turn drives the rotating column 702 to rotate, and drives the driving gear 703 to rotate. The intermediate gear 704 drives the other driving gears 703 to rotate, and drives multiple stirring blades 705 to rotate. This allows the slurry in the slurry tank 2 to be stirred from multiple directions. This avoids uneven slurry flow rates at different positions of the ball valve wax mold due to high flow rates at the center and slow flow rates at the edges, which would lead to differences in coating thickness. At the same time, it avoids the eddies generated by stirring from easily introducing air bubbles, which would affect the quality of the mold shell.

[0026] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-precision silica sol shell production equipment for ball valves, comprising a mounting frame (1), characterized in that, The top of the mounting frame (1) is fixedly connected to a slurry tank (2), and the bottom of the mounting frame (1) is fixedly connected to a circulation pump (3). The circulation pump (3) is used to pump the slurry inside the slurry tank (2). An automatic cleaning mechanism (5) is provided on the outside of the mounting frame (1). A filter mechanism (4) is provided on the side of the automatic cleaning mechanism (5) away from the mounting frame (1). The filter mechanism (4) is used to filter the slurry. The automatic cleaning mechanism (5) is used to automatically clean the filter mechanism (4). A replacement mechanism (6) is provided on the outside of the filter mechanism (4). An anti-vortex stirring mechanism (7) is provided in the middle of the mounting frame (1). The anti-vortex stirring mechanism (7) stirs the slurry inside and can avoid the formation of vortices. A blocking frame (8) is provided inside the slurry tank (2). A lifting arm (9) is fixedly connected to the top side of the mounting frame (1).

2. The high-precision silica sol shell forming apparatus for producing a ball valve according to claim 1, wherein The filtration mechanism (4) includes a fixed barrel (401), a rotating shaft (402) is rotatably connected to the middle of the fixed barrel (401), a filter roller (403) is slidably connected to the outside of the rotating shaft (402), a plurality of blocking strips (404) are fixedly connected to the outside of the filter roller (403), a housing (405) is fixedly connected to one side of the fixed barrel (401), and a rotating wheel (406) is fixedly connected to one end of the rotating shaft (402). The rotating wheel (406) is disposed in the fixed barrel (401). Inside the outer shell (405), two connecting pipes (407) are fixedly connected to the outside of the fixed bucket (401). A connecting pipe (408) is fixedly connected between the upper connecting pipe (407) and one bottom end of the outer shell (405). A slurry inlet pipe (409) is fixedly connected to the other bottom end of the outer shell (405). A slurry outlet pipe (411) is fixedly connected to the bottom of the lower connecting pipe (407). The other end of the slurry outlet pipe (411) is fixedly connected to the inside of the slurry dipping bucket (2).

3. The high-precision silica sol shell-making equipment for ball valve production according to claim 2, characterized in that, The automatic cleaning mechanism (5) includes a storage box (501), one side of which is fixedly connected to the outside of the mounting frame (1), and the other end of which is fixedly connected to the outside of the fixed bucket (401). Slide grooves (502) are provided inside both sides of the storage box (501). A slider (503) is slidably connected inside the slide groove (502). A retaining spring (504) is provided inside the slide groove (502). A shovel plate (505) is fixedly connected between the two sliders (503). The shovel plate (505) is located inside the storage box (501). An installation groove (509) is provided at the bottom of the storage box (501). A torsion spring (511) is provided inside the installation groove (509).

4. The high-precision silica sol shell-making equipment for ball valve production according to claim 2, characterized in that, The replacement mechanism (6) includes two fixed seats (601), which are respectively fixedly connected to the outer ends of the fixed barrel (401). A sliding rod (602) is slidably connected inside the fixed seat (601). One end of the sliding rod (602) is fixedly connected to a limiting plate (603), and the other end of the sliding rod (602) is fixedly connected to a fixed cylinder (605). A tension spring (604) is sleeved on the outside of the sliding rod (602). One end of the tension spring (604) is fixedly connected to one end of the limiting plate (603), and the other end of the tension spring (604) is fixedly connected to the other end of the limiting plate (603). A fixed connection is made to one end of the fixed base (601). A rotating pin (606) is rotatably connected inside the fixed cylinder (605). A torsion spring (607) is provided inside the fixed cylinder (605). A locking rod (608) is rotatably connected to the outside of the rotating pin (606). A locking plate (609) is fixedly connected to the end of the locking rod (608) away from the fixed base (601). A cover (610) is provided at the end of the fixed cylinder (401) away from the outer shell (405). Two locking slots (611) are opened on the outside of the cover (610). The locking plate (609) engages with the locking slots (611).

5. A high-precision silica sol shell-making device for ball valve production according to claim 2, characterized in that, The anti-vortex stirring mechanism (7) includes a mounting box (701). The top of the mounting box (701) is fixedly connected to the bottom of the mounting frame (1). Multiple rotating columns (702) are rotatably connected inside the mounting box (701). A drive gear (703) is fixedly connected to the outside of the rotating column (702). The multiple drive gears (703) are all located inside the mounting box (701). Multiple intermediate gears (704) are located inside the mounting box (701). The multiple intermediate gears (704) are located between the multiple drive gears (703). A stirring blade (705) is fixedly connected to the top of the rotating column (702). The stirring blade (705) is located on the slurry. At the bottom of the inner part of the bucket (2), a fixed box (706) is fixedly connected to the bottom of the mounting box (701). An impeller (707) is rotatably connected inside the fixed box (706). The middle part of the impeller (707) is connected to the bottom of the rotating column (702) in the middle. A slurry pumping pipe (708) is fixedly connected to the input end of the circulating pump (3). The other end of the slurry pumping pipe (708) is fixedly connected to the bottom of the slurry bucket (2). A slurry pipe (709) is fixedly connected to the output end of the circulating pump (3). The other end of the slurry pipe (709) is fixedly connected to one end of the fixed box (706). The other end of the fixed box (706) is fixedly connected to the bottom of the slurry inlet pipe (409).

6. A high-precision silica sol shell-making device for ball valve production according to claim 4, characterized in that, The bottom of the outer shell (405) is fixedly connected to a slurry discharge pipe (410), and the bottom of the slurry discharge pipe (410) is threadedly connected to a sealing cap. The filter roller (403) is disposed inside the fixed barrel (401).

7. A high-precision silica sol shell-making device for ball valve production according to claim 3, characterized in that, One end of the clamping spring (504) is fixedly connected to the bottom of the slider (503), and the other end of the clamping spring (504) is fixedly connected to the inside of the groove (502).

8. A high-precision silica sol shell-making device for ball valve production according to claim 3, characterized in that, The bottom of the container (501) is provided with a storage groove (506), and a hopper (507) is slidably connected inside the storage groove (506). A circular plate (508) is fixedly connected to one end of the hopper (507). A rotating rod (510) is rotatably connected to the bottom of the container (501), and a baffle plate (512) is fixedly connected to one end of the rotating rod (510).

9. A high-precision silica sol shell-making device for ball valve production according to claim 8, characterized in that, One end of the torsion spring (511) is fixedly connected to the outside of the rotating rod (510), and the other end of the torsion spring (511) is fixedly connected to the inside of the mounting groove (509).

10. A high-precision silica sol shell-making device for ball valve production according to claim 4, characterized in that, One end of the second torsion spring (607) is fixedly connected to the inside of the fixed cylinder (605), and the other end of the second torsion spring (607) is fixedly connected to the outside of the rotating pin (606).

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