Ball valve vertical pouring casting system

Abstract

The utility model belongs to the technical field of ball valve casting, and particularly relates to a ball valve vertical casting system which comprises a base. A rotating assembly is arranged on the side wall of the bottom of the base. The side wall of the top of the rotating assembly is slidably connected with a movable seat. The pair of movable seats is symmetrically arranged at the top of the base; a valve body mold is fixedly connected to the side wall of the top of the movable base. A plurality of open risers are fixedly connected to the side wall of the top of the valve body mold; the middle part of the side wall of the open riser is fixedly connected with an outer pouring gate; by arranging the blind riser, the sprue, the cross gate and the ingate, when molten metal in a valve body mold is solidified and contracted, enough molten metal can be provided for supplement, meanwhile, smooth discharge of gas and inclusions in the casting process of the molten metal is facilitated, the conditions of air holes, inclusions and the like of a cast ball valve are reduced, and the service life of the ball valve is prolonged. Defects such as shrinkage cavities and shrinkage porosity in the ball valve are prevented, sand washing of the ball valve is guaranteed, the upper wall and the lower wall are uniform in thickness, and the quality of the ball valve is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of ball valve casting, in particular to a ball valve vertical casting system. Background Art

[0002] A ball valve is a common fluid control valve, and its main components include a ball, a valve seat, a valve stem, and an actuator. When the actuator rotates, the valve stem drives the ball to rotate in the valve body. When the hole on the ball is aligned with the channel on the valve seat, the fluid can pass smoothly; when the ball rotates 90 degrees and the hole and the channel are misaligned, the fluid is blocked. Therefore, a ball valve can be used to achieve on-off control of the fluid.

[0003] In the prior art, workers will place the selected metal material into a furnace for heating until it is completely melted into molten metal, and then inject the molten metal into a ball valve mold through a pouring system. The molten metal will gradually solidify into a solid state in the mold. When the solidified molten metal is cooled to a certain temperature, it will be taken out of the mold to obtain a cast ball valve.

[0004] After long-term use and observation, it was found that during the casting process of the ball valve mold, the molten metal in the mold will shrink continuously during solidification, causing the cast ball valve to be smaller than the design value, and shrinkage holes and shrinkage will appear inside the ball valve.

[0005] To this end, the utility model provides a ball valve vertical casting system. Utility Model Content

[0006] In order to make up for the deficiencies of the prior art and solve at least one problem raised in the background technology, a vertical casting system for a ball valve is proposed.

[0007] The technical solution adopted by the utility model to solve its technical problems is as follows: A vertical casting system for a ball valve of the utility model includes a base; a rotating assembly is provided on the side wall of the bottom of the base; a movable seat is slidably connected to the side wall of the top of the rotating assembly; the movable seats are a pair and symmetrically arranged on the top of the base; a valve body mold is fixedly connected to the side wall of the top of the movable seat; a plurality of risers are fixedly connected to the side wall of the top of the valve body mold; an external runner is fixedly connected to the middle of the side wall of the riser; the valve body mold, the riser and the external runner are all hollow and communicated; a plurality of blind risers are fixedly connected to the middle of the side wall of the valve body mold; an internal runner is fixedly connected to the middle of the side wall of the blind riser; the other end of the internal runner is fixedly connected to a cross runner; a sprue is fixedly connected to the middle of the side wall of the cross runner; the blind riser, the sprue, the cross runner and the internal runner are all hollow and communicated; a moving assembly is provided in the middle of the side wall of the movable seat. By setting the blind riser, the sprue, the cross runner and the internal runner in this step, when the molten metal in the valve body mold solidifies and shrinks, enough molten metal can be provided to supplement it. At the same time, it helps the smooth discharge of gas and inclusions during the casting process, reduces the occurrence of pores and inclusions in the cast ball valve, prevents defects such as shrinkage cavities and porosity from occurring inside the ball valve, ensures uniform sand washing and wall thickness of the ball valve up and down, and improves the quality of the ball valve.

[0008] Preferably, a fixing block is fixedly connected to the middle of the side wall of the internal runner; a notch is opened in the middle of the side wall of the fixing block; the notches are a pair and symmetrically arranged on the side wall of the fixing block; a connecting rod is fixedly connected to the middle of the inner side wall of the notch; a limiting baffle is rotatably connected to the middle of the side wall of the connecting rod; a torsion spring is provided between the limiting baffle and the connecting rod. By setting the fixing block, the notch, the connecting rod and the limiting baffle in this step, the situation that the molten metal flows back from the blind riser can be prevented, ensuring that the molten metal flows in a predetermined direction, thereby protecting the quality and structural integrity of the cast ball valve. And by preventing the backflow and unstable flow of the molten metal, the limiting baffle can reduce the generation of defects such as shrinkage cavities, porosity and air holes in the ball valve, and improve the internal quality and appearance quality of the ball valve.

[0009] Preferably, the rotating assembly includes a motor; the motor is arranged at the bottom of the base; the output end of the motor is fixedly connected to a turntable; a plurality of grooves are opened on the side wall of the top of the turntable; the grooves are slidably connected to the movable seat. By setting the motor, the turntable and the grooves in this step, the molten metal can be filled and solidified under the action of strong centrifugal force, making the internal structure of the cast ball valve more dense, reducing the generation of defects such as shrinkage cavities and porosity, and helping to improve the mechanical properties and physical properties of the ball valve.

[0010] Preferably, a groove is provided in the middle of the side wall of the turntable; there are a plurality of the grooves which are regularly arranged in a circumferential array on the side wall of the turntable; a roller is rotatably connected to the middle of the inner side wall of the groove; the plurality of rollers rotate on the top of the base; by providing the groove and the roller in this step, when the turntable rotates on the top of the base, the roller also rolls on the top of the base as the turntable rotates. The rolling of the roller inside the groove can increase the power when the turntable rotates on the top of the base, reduce the frictional loss when the turntable rotates on the top of the base, and reduce the situation that the rotation state decreases due to the mechanical fatigue of the turntable.

[0011] Preferably, a plurality of exhaust ports are provided on the side wall of the top of the valve body mold; an exhaust plug is provided in the middle of the inner side wall of the exhaust port; by providing the exhaust port and the exhaust plug in this step, the gas in the valve body mold can be effectively discharged, avoiding the existence of air holes inside the cast ball valve, and reducing the surface defects caused by the residual gas.

[0012] Preferably, the moving component includes a handle; the handle is fixedly connected to the side wall of the movable seat; by providing the handle in this step, the movable seat can be pulled outwards along the channel, so that a pair of valve body molds are separated from the middle to both sides, facilitating the staff to take out the solidified ball valve. And the provision of the handle enables the staff to easily grasp when the valve body mold needs to be opened, thus more conveniently performing the opening and closing operations of the valve body mold.

[0013] Preferably, a thermometer is provided in the middle of the side wall of the valve body mold; the thermometer is arranged outside the valve body mold; by providing the thermometer in this step, the temperature of the valve body mold can be monitored in real time, the cooling process of the ball valve can be precisely controlled, and defects such as shrinkage cavities, shrinkage porosity, and cracks caused by uneven cooling or improper cooling speed can be reduced.

[0014] The beneficial effects of the present utility model are as follows:

[0015] 1. For the ball valve vertical casting system of the present utility model, by providing a blind riser, a sprue, a runner and an ingate, when the molten metal in the valve body mold solidifies and shrinks, sufficient molten metal can be provided to supplement it. At the same time, it helps the smooth discharge of gas and inclusions during the casting process, reduces the occurrence of air holes and inclusions in the cast ball valve, prevents defects such as shrinkage cavities and shrinkage porosity inside the ball valve, ensures uniform sand washing and wall thickness of the ball valve up and down, and improves the quality of the ball valve.

[0016] 2. The vertical casting system for a ball valve according to the present utility model can prevent the backflow of molten metal from the blind riser by setting the fixing block, the notch, the connecting rod and the limiting baffle, ensuring that the molten metal flows in a predetermined direction, thereby protecting the quality and structural integrity of the cast ball valve. Moreover, by preventing the backflow and unstable flow of the molten metal, the limiting baffle can reduce the generation of defects such as shrinkage cavities, shrinkage porosity, and gas holes in the ball valve, improving the internal quality and appearance quality of the ball valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present utility model will be further described below with reference to the accompanying drawings.

[0018] Figure 1 is a perspective view of the present utility model;

[0019] Figure 2 is a cross-sectional view of the valve body mold in the present utility model;

[0020] Figure 3 is a schematic diagram of the mating structure of the blind riser and the limiting baffle in the present utility model;

[0021] Figure 4 is a schematic diagram of the mating structure of the turntable and the movable seat in the present utility model.

[0022] Legend:

[0023] 1. Base; 11. Movable seat; 12. Valve body mold; 13. Open riser; 14. Outer runner; 15. Blind riser; 16. Sprue; 17. Runner; 18. Ingate; 2. Fixing block; 21. Notch; 22. Connecting rod; 23. Limiting baffle; 3. Motor; 31. Turntable; 32. Channel; 4. Groove; 41. Roller; 5. Vent port; 51. Vent plug; 6. Handle; 7. Thermometer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] Specific embodiments are given below.

[0026] As Figures 1 to 4As shown in the figure, a vertical pouring casting system for a ball valve according to an embodiment of the present utility model includes a base 1; a rotating assembly is provided on the side wall of the bottom of the base 1; a movable seat 11 is slidably connected to the side wall of the top of the rotating assembly; the movable seats 11 are a pair and symmetrically arranged on the top of the base 1; a valve body mold 12 is fixedly connected to the side wall of the top of the movable seat 11; a plurality of risers 13 are fixedly connected to the side wall of the top of the valve body mold 12; an external runner 14 is fixedly connected to the middle of the side wall of the riser 13; the valve body mold 12, the riser 13 and the external runner 14 are all hollow and communicated; a plurality of blind risers 15 are fixedly connected to the middle of the side wall of the valve body mold 12; an internal runner 18 is fixedly connected to the middle of the side wall of the blind riser 15; the other end of the internal runner 18 is fixedly connected to a cross runner 17; a sprue 16 is fixedly connected to the middle of the side wall of the cross runner 17; the blind riser 15, the sprue 16, the cross runner 17 and the internal runner 18 are all hollow and communicated; a moving assembly is provided in the middle of the side wall of the movable seat 11; during operation, the staff closes a pair of valve body molds 12 together through the moving assembly, and then introduces the melted metal liquid into the risers 13 from a plurality of external runners 14, and enters the inside of the valve body mold 12 from a plurality of external runners 14. At this time, the inside of the valve body mold 12 is completely filled with the metal liquid. Then, the inlet of the external runner 14 is closed, and no more metal liquid is introduced from the external runner 14. Then, the staff starts the rotating assembly to rotate the valve body mold 12. Under the action of centrifugal force, the metal liquid will be evenly distributed inside and on the inner wall of the valve body mold 12. Then, the rotating assembly is closed again. At this time, the valve body mold 12 stops rotating. Then, the metal liquid is injected through the sprue 16. Because the blind riser 15, the sprue 16, the cross runner 17 and the internal runner 18 are communicated, the metal liquid will flow from the sprue 16 into the cross runner 17 and the internal runner 18, and enter the inside of a plurality of blind risers 15. When the metal liquid solidifies in the valve body mold 12, the metal liquid will continuously shrink. At this time, the missing metal liquid inside the valve body mold 12 will be supplemented by absorbing the metal liquid in the blind riser 15 until the metal liquid in the valve body mold 12 is completely solidified. The staff opens the valve body mold 12 to both sides through the moving assembly, and takes out the finally cast ball valve from the valve body mold 12. By setting the blind riser 15, the sprue 16, the cross runner 17 and the internal runner 18 in this step, enough metal liquid can be provided to supplement the metal liquid when it solidifies and shrinks inside the valve body mold 12. At the same time, it helps the smooth discharge of gas and inclusions during the casting process of the metal liquid, reduces the occurrence of pores and inclusions in the cast ball valve, prevents defects such as shrinkage cavities and shrinkage porosity inside the ball valve, ensures the uniform thickness of the sand washing and upper and lower walls of the ball valve, and improves the quality of the ball valve.

[0027] As Figure 1 and Figure 3As shown, a fixing block 2 is fixedly connected to the middle of the side wall of the ingate 18; a notch 21 is formed in the middle of the side wall of the fixing block 2; the notches 21 are a pair and symmetrically arranged on the side wall of the fixing block 2; a connecting rod 22 is fixedly connected to the middle of the inner side wall of the notch 21; a limiting baffle 23 is rotatably connected to the middle of the side wall of the connecting rod 22; a torsion spring is arranged between the limiting baffle 23 and the connecting rod 22; during operation, when the molten metal enters the blind riser 15 through the ingate 18, the molten metal will push open the limiting baffle 23 on the side wall of the fixing block 2. At this time, the limiting baffle 23 will rotate in the connecting rod 22. Because a torsion spring is arranged between the limiting baffle 23 and the connecting rod 22, when there is no longer molten metal entering from the ingate 18, the molten metal in the blind riser 15 will be blocked by the limiting baffle 23 and will not overflow out of the blind riser 15. By setting the fixing block 2, the notch 21, the connecting rod 22 and the limiting baffle 23 in this step, the situation that the molten metal flows back from the blind riser 15 can be prevented, ensuring that the molten metal flows in a predetermined direction, thereby protecting the quality and structural integrity of the cast ball valve. Moreover, by preventing the backflow and unstable flow of the molten metal, the limiting baffle 23 can reduce the generation of defects such as shrinkage cavities, porosity and looseness in the ball valve, improving the internal quality and appearance quality of the ball valve.

[0028] As Figure 2 and Figure 4 shown, the rotating assembly includes a motor 3; the motor 3 is arranged at the bottom of the base 1; the output end of the motor 3 is fixedly connected with a turntable 31; a plurality of grooves 32 are formed in the top side wall of the turntable 31; the grooves 32 are slidably connected with the movable seat 11; during operation, after the molten metal is poured into the valve body mold 12, the staff starts the motor 3, and the motor 3 will drive the turntable 31 to rotate. At this time, the turntable 31 will drive the movable seat 11 and the valve body mold 12 on its top to rotate synchronously, so that the molten metal in the valve body mold 12 is evenly distributed inside the valve body mold 12 during rotation. By setting the motor 3, the turntable 31 and the grooves 32 in this step, the molten metal can be filled and solidified under the action of strong centrifugal force, making the internal structure of the cast ball valve more dense, reducing the generation of defects such as shrinkage cavities and porosity, and helping to improve the mechanical properties and physical properties of the ball valve.

[0029] As Figure 2 and Figure 4As shown in the figure, a groove 4 is formed in the middle of the side wall of the turntable 31; there are multiple grooves 4 which are regularly arranged in a circumferential array on the side wall of the turntable 31; a roller 41 is rotatably connected to the middle of the inner side wall of the groove 4; the multiple rollers 41 rotate on the top of the base 1; during operation, the staff turns on the motor 3, and the motor 3 drives the turntable 31 fixedly connected to the output end to rotate. At this time, the multiple rollers 41 rotating on the top of the base 1 start to roll inside the groove 4 along with the rotation of the turntable 31. By setting the groove 4 and the roller 41 in this step, when the turntable 31 rotates on the top of the base 1, the roller 41 also rolls on the top of the base 1 along with the rotation of the turntable 31. The rolling of the roller 41 inside the groove 4 can increase the power when the turntable 31 rotates on the top of the base 1, reduce the frictional loss when the turntable 31 rotates on the top of the base 1, and reduce the situation where the rotation state decreases due to the mechanical fatigue of the turntable 31.

[0030] As Figure 1 and Figure 2 shown, a plurality of exhaust ports 5 are formed in the side wall of the top of the valve body mold 12; an exhaust plug 51 is arranged in the middle of the inner side wall of the exhaust port 5; during operation, when the molten metal in the valve body mold 12 solidifies, the air and other gases brought by the molten metal into the valve body mold 12 are discharged outwards through the exhaust port 5 and the exhaust plug 51. By setting the exhaust port 5 and the exhaust plug 51 in this step, the gas in the valve body mold 12 can be effectively discharged, avoiding the existence of air holes inside the cast ball valve, and reducing the surface defects caused by gas residue.

[0031] As Figure 1 and Figure 4 shown, the moving component includes a handle 6; the handle 6 is fixedly connected to the side wall of the movable seat 11; by setting the handle 6 in this step, the movable seat 11 can be pulled outwards along the channel 32, so that a pair of valve body molds 12 are separated from the middle to both sides, which is convenient for the staff to take out the solidified ball valve. And setting the handle 6 enables the staff to easily grasp when the valve body mold 12 needs to be opened, thus more conveniently performing the opening and closing operations of the valve body mold 12.

[0032] As Figure 1 shown, a thermometer 7 is arranged in the middle of the side wall of the valve body mold 12; the thermometer 7 is arranged outside the valve body mold 12; by setting the thermometer 7 in this step, the temperature of the valve body mold 12 can be monitored in real time, the cooling process of the ball valve can be accurately controlled, and defects such as shrinkage cavities, shrinkage porosity, and cracks caused by uneven cooling or improper cooling speed can be reduced.

[0033] Working principle: The staff closes a pair of valve body molds 12 together by moving components. Then, the molten metal liquid is introduced into the riser 13 from multiple external runners 14 and enters the interior of the valve body mold 12 through the multiple external runners 14. At this time, the interior of the valve body mold 12 is completely cast with the molten metal liquid. Subsequently, the entrance of the external runner 14 is closed, and no more molten metal liquid is introduced from the external runner 14. Then, the staff starts the rotating component to rotate the valve body mold 12. Under the action of centrifugal force, the molten metal liquid will be evenly distributed on the interior and inner wall of the valve body mold 12. Then, the rotating component is closed, and at this time, the valve body mold 12 stops rotating. Then, the molten metal liquid is injected through the sprue 16. Since the blind riser 15, the sprue 16, the runner 17, and the ingate 18 are connected, the molten metal liquid will flow from the sprue 16 into the runner 17 and the ingate 18 and enter the interiors of multiple blind risers 15. When the molten metal liquid solidifies in the valve body mold 12, the molten metal liquid will continuously shrink. At this time, the lacking molten metal liquid in the valve body mold 12 will be supplemented by absorbing the molten metal liquid in the blind riser 15 until the molten metal liquid in the valve body mold 12 is completely solidified. The staff opens the valve body mold 12 to both sides by moving components and takes out the finally cast ball valve from the valve body mold 12. When the molten metal liquid enters the blind riser 15 through the ingate 18, the molten metal liquid will push open the limit baffle 23 on the side wall of the fixed block 2. At this time, the limit baffle 23 will rotate in the connecting rod 22. Because a torsion spring is provided between the limit baffle 23 and the connecting rod 22, when no more molten metal liquid enters from the ingate 18, the molten metal liquid in the blind riser 15 will be blocked by the limit baffle 23 and will not overflow from the blind riser 15. After pouring the molten metal liquid into the valve body mold 12, the staff starts the motor 3. The motor 3 will drive the turntable 31 to rotate. At this time, the turntable 31 will drive the movable seat 11 on its top and the valve body mold 12 to rotate synchronously, so that the molten metal liquid in the valve body mold 12 is evenly distributed inside the valve body mold 12 during rotation. The staff turns on the motor 3, and the motor 3 drives the turntable 31 fixedly connected to the output end to rotate. At this time, multiple rollers 41 rotating on the top of the base 1 start to roll in the groove 4 along with the rotation of the turntable 31. When the molten metal liquid in the valve body mold 12 solidifies, the air and other gases brought into the valve body mold 12 by the molten metal liquid will be discharged outward through the exhaust port 5 and the exhaust plug 51.

[0034] The above shows and describes the basic principle, main features, and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A vertical casting system for a ball valve, comprising a base (1); characterized in that: A rotating component is provided on the side wall of the bottom of the base (1); a movable seat (11) is slidably connected to the side wall of the top of the rotating component; a pair of the movable seats (11) are symmetrically arranged on the top of the base (1); a valve body mold (12) is fixedly connected to the side wall of the top of the movable seat (11); a plurality of risers (13) are fixedly connected to the side wall of the top of the valve body mold (12); a sprue (14) is fixedly connected to the middle of the side wall of the riser (13); the valve body mold (12), the riser (13) and the sprue (14) are all hollow and communicated; a plurality of blind risers (15) are fixedly connected to the middle of the side wall of the valve body mold (12); an ingate (18) is fixedly connected to the middle of the side wall of the blind riser (15); the other end of the ingate (18) is fixedly connected to a runner (17); a downsprue (16) is fixedly connected to the middle of the side wall of the runner (17); the blind riser (15), the downsprue (16), the runner (17) and the ingate (18) are all hollow and communicated; a moving component is provided in the middle of the side wall of the movable seat (11).

2. The vertical casting system for a ball valve according to claim 1, wherein: A fixing block (2) is fixedly connected to the middle of the side wall of the ingate (18); a notch (21) is opened in the middle of the side wall of the fixing block (2); a pair of the notches (21) are symmetrically arranged on the side wall of the fixing block (2); a connecting rod (22) is fixedly connected to the middle of the inner side wall of the notch (21); a limiting baffle (23) is rotatably connected to the middle of the side wall of the connecting rod (22); a torsion spring is provided between the limiting baffle (23) and the connecting rod (22).

3. A vertical casting system for a ball valve according to claim 1, characterized in that: The rotating component includes a motor (3); the motor (3) is arranged at the bottom of the base (1); a turntable (31) is fixedly connected to the output end of the motor (3); a plurality of channels (32) are opened on the side wall of the top of the turntable (31); the channels (32) are slidably connected to the movable seat (11).

4. A vertical casting system for a ball valve according to claim 3, characterized in that: A groove (4) is opened in the middle of the side wall of the turntable (31); a plurality of the grooves (4) are arranged in a circumferential array pattern on the side wall of the turntable (31); a roller (41) is rotatably connected to the middle of the inner side wall of the groove (4); a plurality of the rollers (41) rotate on the top of the base (1).

5. A vertical casting system for a ball valve according to claim 1, characterized in that: A plurality of exhaust ports (5) are opened on the side wall of the top of the valve body mold (12); an exhaust plug (51) is provided in the middle of the inner side wall of the exhaust port (5).

6. A vertical casting system for a ball valve according to claim 1, characterized in that: The moving component includes a handle (6); the handle (6) is fixedly connected to the side wall of the movable seat (11).

7. A vertical pouring casting system for a ball valve according to claim 5, characterized in that: A thermometer (7) is provided in the middle of the side wall of the valve body mold (12); the thermometer (7) is arranged outside the valve body mold (12).

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