Low-temperature cerate machine for valve casting

Abstract

The low-temperature cerate machine for valve casting comprises a vertical frame, a stirring barrel and a steam generator, the stirring barrel is installed in the vertical frame, a top cover is arranged on the top of the stirring barrel, an installation frame is fixedly connected to the top of the top cover, a driving motor is installed on the top of the installation frame, and a rotating shaft is arranged at the output end of the bottom of the driving motor. A stirring paddle is fixedly connected to the side surface of the stirring shaft; an output pipe is fixedly connected to the bottom of the stirring barrel; a first valve is arranged on the side surface of the output pipe; a first heating bin is fixedly connected to the side surface of the stirring barrel; the side edge of the first heating bin is fixedly connected with a second conveying pipe, the surface of the output pipe is fixedly connected with a second heating bin, the side edge of the second heating bin is fixedly connected with a fourth conveying pipe, the output pipe is heated to prevent wax liquid from being solidified, operation is easy, the output pipe is prevented from being blocked, labor input is reduced, and time is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of valve casting, in particular to a low-temperature wax paste machine for valve casting. Background Art

[0002] Precision casting commonly used in the valve industry is investment casting. Investment casting usually means making a pattern from an easily fusible material, coating the surface of the pattern with several layers of refractory materials to form a mold shell, then melting and discharging the pattern from the mold shell to obtain a mold without a parting surface, and then filling and pouring the mold after high-temperature roasting. This is often called lost-wax casting. Investment castings have high dimensional accuracy and surface finish. The utility model patent with the application number CN201922162879.0 discloses a low-temperature wax paste machine for castings, including a bottom plate. The upper surface of the bottom plate is fixedly connected with a stirring barrel through support legs. The upper end of the stirring barrel is connected with a cover plate through a flange. The upper end of the cover plate is fixedly connected with a driving motor. The output end of the driving motor penetrates through the cover plate and is fixedly connected with a stirring rod. The side wall of the stirring rod is symmetrically and fixedly connected with a plurality of stirring plates. The side wall of the stirring barrel is fixedly connected with a heat preservation barrel. The upper surface of the bottom plate is fixedly connected with a heating barrel. The side wall of the heating barrel is fixedly communicated with a heating pipe. The side wall of the heating barrel is fixedly communicated with a drain pipe. The end of the drain pipe far away from the heating barrel is fixedly communicated with a circulating pump. The drain port of the circulating pump is fixedly communicated with an infusion pipe. The end of the infusion pipe far away from the circulating pump is fixedly communicated with the heat preservation barrel. A circulating pipe is fixedly connected between the heat preservation barrel and the heating barrel. The lower end of the stirring barrel is fixedly communicated with an output pipe. The pipe wall of the output pipe is connected with a cleaning mechanism. The cleaning mechanism includes two fixing blocks symmetrically and fixedly connected to the pipe wall of the output pipe. An opening is formed in the upper pipe wall of the output pipe. A leak-proof plug is inserted into the opening. A pressing plate is arranged on the upper surface of the leak-proof plug. Insertion holes are symmetrically formed in the side wall of the fixing block. A fixing pin is inserted into the insertion hole. A fixing hole matched with the fixing pin is formed in the side wall of the pressing plate. The end of the fixing pin far away from the fixing block is fixedly connected with a pulling plate. The same spring sleeved outside the fixing pin is fixedly connected between the pulling plate and the fixing block. A cleaning ring is slidably connected in the output pipe. The upper end of the cleaning ring is fixedly connected with a connecting rod. The upper end of the connecting rod is fixedly connected with a connecting block. Anti-slip lines are formed on the side wall of the pulling plate. The lower surface of the stirring barrel is conical. A connecting card slot matched with the connecting block is formed at the end of the leak-proof plug close to the connecting block. Pull the pulling plate in the direction away from the pressing plate, then take out the pressing plate and the leak-proof plug, and then pull the connecting block to slide along the output pipe, so that the connecting block drives the cleaning ring through the connecting rod to scrape off the wax liquid adhering to the inner wall of the output pipe. However, manual operation is relatively troublesome, time-consuming and affects the operation efficiency. Content of the Utility Model

[0003] The utility model aims to solve the problems existing in the above-mentioned prior art, and provides a low-temperature wax paste machine for valve casting, which can prevent the wax liquid from solidifying by heating the output pipe, has simple operation to avoid blockage of the output pipe, reduces manual input and saves time.

[0004] The technical solution adopted by the present utility model to solve its technical problems: This low-temperature wax paste machine for valve casting includes a vertical frame, a stirring barrel, and a steam generator. The stirring barrel is installed inside the vertical frame. The bottom of the stirring barrel is of a conical structure. A top cover is provided at the top of the stirring barrel. An installation frame is fixedly connected to the top of the top cover. A driving motor is installed on the top of the installation frame. A rotating shaft is provided at the output end of the bottom of the driving motor. A coupling is provided at the bottom of the rotating shaft. A stirring shaft is provided at the bottom of the coupling. Stirring paddles are fixedly connected to the side surface of the stirring shaft. There are multiple stirring paddles. An output pipe is fixedly connected to the bottom of the stirring barrel. The output pipe and the stirring barrel are made of metal materials. A first valve is provided on the side surface of the output pipe. A first heating chamber is fixedly connected to the side surface of the stirring barrel. The first heating chamber is connected to the top of the vertical frame. A first transmission pipe is provided at the top of the steam generator. A second transmission pipe is fixedly connected to the side of the first heating chamber. The second transmission pipe is connected to the first transmission pipe. A second valve is provided on the side surface of the first transmission pipe. A third transmission pipe is fixedly connected to the side of the first heating chamber. A third valve is provided on the surface of the third transmission pipe. A second heating chamber is fixedly connected to the surface of the output pipe. A fourth transmission pipe is fixedly connected to the side of the second heating chamber. The fourth transmission pipe is connected to the second transmission pipe. A fourth valve is provided on the side surface of the fourth transmission pipe. A fifth transmission pipe is fixedly connected to the top of the second heating chamber. A fifth valve is provided on the surface of the fifth transmission pipe. The hot steam generated by the steam generator reaches the inside of the first heating chamber after passing through the first transmission pipe and the second transmission pipe. When the fourth valve is opened, the hot steam is diverted from the second transmission pipe to the fourth transmission pipe, and then the hot steam reaches the inside of the second heating chamber. The heat inside the first heating chamber is transferred to the stirring barrel. After the stirring barrel is heated, the wax material inside becomes liquid. After the driving motor is turned on, it drives the stirring shaft and the stirring paddles to rotate. The stirring shaft and the stirring paddles stir the wax liquid to make it more uniform and improve the quality of the wax liquid. When the first valve is opened, the wax liquid is transported through the output pipe. The heat inside the second heating chamber is transferred to the output pipe. After the output pipe is heated, the wax liquid is kept in a stable liquid state for transportation. During the whole process, the output pipe is heated to prevent the wax liquid from solidifying. The operation is simple, avoiding blockage of the output pipe, reducing manual input and saving time.

[0005] For further improvement, a controller is provided on the surface of the steam generator. Operation keys are provided on the surface of the controller. A display screen is provided on the surface of the controller. A supply pipeline is provided on the side of the steam generator. The steam generator uses the supply pipeline to supplement water source. The steam generator is turned on, off, paused, and adjusted by using the controller, which is easy to operate and convenient to use.

[0006] For further improvement, there are through holes inside the top cover and the installation frame. The rotating shaft passes through the through holes to ensure the normal operation of structures such as the rotating shaft, coupling, stirring shaft, and stirring paddles, and the rotating shaft does not come into direct contact with the top cover and the installation frame, avoiding friction damage.

[0007] Further improvement: The stirring barrel is located at the center inside the first heating chamber. The second transfer pipe and the third transfer pipe are distributed on the left and right sides of the first heating chamber. The hot steam evenly fills the inside of the first heating chamber, enabling the side surface of the stirring barrel to be evenly heated and making the heat transfer process more stable.

[0008] Further improvement: The second heating chamber is close to the first valve. The second heating chamber reaches inside the mounting frame, and the second heating chamber is effectively protected inside the mounting frame, reducing external contact.

[0009] Further improvement: A sub-frame is installed at the top of the vertical frame, and a hydraulic cylinder is installed at the top of the sub-frame. There are two hydraulic cylinders. The piston rods at the output ends of the two hydraulic cylinders are connected to the top cover. The two hydraulic cylinders contract or extend simultaneously, driving the top cover to move up and down, facilitating the opening and closing of the top cover, saving manpower and improving the operation efficiency.

[0010] Further improvement: The top cover and the stirring barrel are located at the center inside the sub-frame. Two support columns are fixedly connected inside the sub-frame. The top cover and the stirring barrel are effectively protected inside the sub-frame, reducing external contact. The two support columns further improve the firmness of the sub-frame.

[0011] Further improvement: The top of the support column is fixedly connected with an optical axis. The side of the top cover is fixedly connected with a lifting plate. A moving hole is formed inside the lifting plate. A linear bearing is fixedly connected to the bottom of the lifting plate. The linear bearing communicates with the moving hole. The optical axis is inside the linear bearing and the moving hole. There are two support columns, two optical axes, two lifting plates, two moving holes, and two linear bearings respectively. The two lifting plates move up and down following the top cover. The two linear bearings interact with the two optical axes respectively, effectively pulling and restricting the top cover, and improving the stability and accuracy of the top cover during the up and down movement.

[0012] The beneficial effects of the present utility model are:

[0013] 1. The hot steam generated by the steam generator reaches the inside of the first heating chamber after passing through the first transfer pipe and the second transfer pipe. The fourth valve is opened, and the hot steam is diverted from the second transfer pipe to the fourth transfer pipe and then reaches the inside of the second heating chamber. The heat inside the first heating chamber is transferred to the stirring barrel. After the stirring barrel is heated, the waxy material inside becomes liquid. After the driving motor is started, it drives the stirring shaft and the stirring paddle to rotate. The stirring shaft and the stirring paddle stir the wax liquid to make it more uniform and improve the quality of the wax liquid. The first valve is opened, and the wax liquid is transported through the output pipe. The heat inside the second heating chamber is transferred to the output pipe. After the output pipe is heated, the wax liquid is stably transported in a liquid state. The output pipe is heated throughout the process to prevent the wax liquid from solidifying. The operation is simple, avoiding blockage of the output pipe, reducing manual input, and saving time.

[0014] 2. By simultaneously contracting or extending the two hydraulic cylinders, the top cover is driven to move up and down, facilitating the opening and closing of the top cover, saving manpower and improving operation efficiency. The top cover and the mixing barrel are effectively protected inside the auxiliary frame, reducing external contact. The two support columns further enhance the firmness of the auxiliary frame. The two lifting plates move up and down following the top cover. The two linear bearings interact with the two optical axes respectively, effectively pulling and restricting the top cover, and improving the stability and accuracy of the top cover during the up and down movement. Brief Description of the Drawings

[0015] Figure 1 is a schematic structural diagram of the present utility model;

[0016] Figure 2 of the present utility model Figure 1 is an enlarged view of part A in;

[0017] Figure 3 is a front view of the structure of the present utility model;

[0018] Figure 4 is a cross-sectional view of the mixing barrel of the present utility model;

[0019] Figure 5 of the present utility model Figure 4 is an enlarged view of part B in;

[0020] Figure 6 of the present utility model Figure 4 is an enlarged view of part C in;

[0021] Figure 7 is a cross-sectional view of the second heating chamber of the present utility model.

[0022] Description of the Reference Numerals: 1, vertical frame; 2, mixing barrel; 3, steam generator; 4, top cover; 5, mounting frame; 6, drive motor; 7, rotating shaft; 8, coupling; 9, mixing shaft; 10, mixing paddle; 11, output pipe; 12, first valve; 13, first heating chamber; 14, first transfer pipe; 15, second transfer pipe; 16, second valve; 17, third transfer pipe; 18, third valve; 19, second heating chamber; 20, fourth transfer pipe; 21, fourth valve; 22, fifth transfer pipe; 23, fifth valve; 24, controller; 25, auxiliary frame; 26, hydraulic cylinder; 27, support column; 28, optical axis; 29, lifting plate; 30, movable hole; 31, linear bearing. Detailed Embodiment

[0023] The following further describes this embodiment in conjunction with the attached Figure 1-7 drawings:

[0024] As Figure 1-7As shown in the figure: In this embodiment, a low-temperature wax paste machine for valve casting includes a vertical frame 1, a stirring barrel 2, and a steam generator 3. The stirring barrel 2 is installed inside the vertical frame 1. The bottom of the stirring barrel 2 is of a conical structure. A top cover 4 is arranged at the top of the stirring barrel 2. An installation frame 5 is fixedly connected to the top of the top cover 4. A driving motor 6 is installed on the top of the installation frame 5. A rotating shaft 7 is arranged at the output end of the bottom of the driving motor 6. A coupling 8 is arranged at the bottom of the rotating shaft 7. A stirring shaft 9 is arranged at the bottom of the coupling 8. A plurality of stirring paddles 10 are fixedly connected to the side surface of the stirring shaft 9. The bottom of the stirring barrel 2 is fixedly connected with an output pipe 11. The output pipe 11 and the stirring barrel 2 are made of metal materials. A first valve 12 is arranged on the side surface of the output pipe 11. A first heating chamber 13 is fixedly connected to the side surface of the stirring barrel 2. The first heating chamber 13 is connected to the top of the vertical frame 1. A first transmission pipe 14 is arranged at the top of the steam generator 3. A second transmission pipe 15 is fixedly connected to the side of the first heating chamber 13. The second transmission pipe 15 is connected to the first transmission pipe 14. A second valve 16 is arranged on the side surface of the first transmission pipe 14. A third transmission pipe 17 is fixedly connected to the side of the first heating chamber 13. A third valve 18 is arranged on the surface of the third transmission pipe 17. A second heating chamber 19 is fixedly connected to the surface of the output pipe 11. A fourth transmission pipe 20 is fixedly connected to the side of the second heating chamber 19. The fourth transmission pipe 20 is connected to the second transmission pipe 15. A fourth valve 21 is arranged on the side surface of the fourth transmission pipe 20. A fifth transmission pipe 22 is fixedly connected to the top of the second heating chamber 19. A fifth valve 23 is arranged on the surface of the fifth transmission pipe 22. A controller 24 is arranged on the surface of the steam generator 3. Operation keys are arranged on the surface of the controller 24. A display screen is arranged on the surface of the controller 24. A supply pipeline is arranged on the side of the steam generator 3. There are through holes inside the top cover 4 and the installation frame 5. The rotating shaft 7 passes through the through holes. The stirring barrel 2 is at the center inside the first heating chamber 13. The second transmission pipe 15 and the third transmission pipe 17 are distributed on the left and right sides of the first heating chamber 13. The second heating chamber 19 is close to the first valve 12. The second heating chamber 19 reaches inside the installation frame 5.

[0025] As Figure 1-5 shown: A sub-frame 25 is installed on the top of the vertical frame 1. A hydraulic cylinder 26 is installed on the top of the sub-frame 25. There are two hydraulic cylinders 26. The piston rods at the output ends of the two hydraulic cylinders 26 are connected to the top cover 4. The top cover 4 and the stirring barrel 2 are at the center position inside the sub-frame 25. Two support columns 27 are fixedly connected inside the sub-frame 25. There are two support columns 27. A smooth shaft 28 is fixedly connected to the top of the support column 27. A lifting plate 29 is fixedly connected to the side of the top cover 4. A movable hole 30 is opened inside the lifting plate 29. A linear bearing 31 is fixedly connected to the bottom of the lifting plate 29. The linear bearing 31 communicates with the movable hole 30. The smooth shaft 28 is inside the linear bearing 31 and the movable hole 30. There are two support columns 27, smooth shafts 28, lifting plates 29, movable holes 30, and linear bearings 31 respectively.

[0026] When the utility model is in use: start the simultaneous contraction operation of the two hydraulic cylinders 26, drive the top cover 4 to move upward, the top cover 4 is opened, put the waxy material into the top of the stirring barrel 2, start the simultaneous extension operation of the two hydraulic cylinders 26, drive the top cover 4 to move downward, the two lifting plates 29 move up and down following the top cover 4, the two linear bearings 31 act on the two optical axes 28 respectively, effectively traction and limit the top cover 4, improve the stability and accuracy of the top cover 4 during the up and down movement process, the top cover 4 is closed, the steam generator 3 is started by using the controller 24, the hot steam generated by the steam generator 3 reaches the inside of the first heating chamber 13 after passing through the first transmission pipe 14 and the second transmission pipe 15, the fourth valve 21 is opened, the hot steam is shunted from the second transmission pipe 15 to the fourth transmission pipe 20, and then the hot steam reaches the inside of the second heating chamber 19, the heat inside the first heating chamber 13 is transferred to the stirring barrel 2, the waxy material inside the stirring barrel 2 becomes liquid after being heated, the driving motor 6 is started to drive the stirring shaft 9 and the stirring paddle 10 to rotate, the stirring shaft 9 and the stirring paddle 10 stir the wax liquid to make it more uniform and improve the quality of the wax liquid, the top cover 4 and the stirring barrel 2 are effectively protected inside the auxiliary frame 25, reducing external contact, the two support columns 27 further improve the firmness of the auxiliary frame 25, open the first valve 12, the wax liquid is transported through the output pipe 11, the heat inside the second heating chamber 19 is transferred to the output pipe 11, the output pipe 11 is heated to keep the wax liquid in a stable liquid state during transportation, the output pipe 11 is heated throughout the process to prevent the wax liquid from solidifying, the operation is simple to avoid blockage of the output pipe, reducing manual input and saving time.

[0027] Although the present utility model has been illustrated and described by reference to the preferred embodiments, it should be understood by those of ordinary skill in the art that various changes in form and details may be made within the scope of the claims.

Claims

1. A low-temperature wax paste machine for valve casting, comprising an upright frame (1), a stirring barrel (2) and a steam generator (3), characterized in that: The stirring barrel (2) is installed inside the vertical frame (1). The bottom of the stirring barrel (2) is of a conical structure. A top cover (4) is provided at the top of the stirring barrel (2). An installation frame (5) is fixedly connected to the top of the top cover (4). A driving motor (6) is installed on the top of the installation frame (5). A rotating shaft (7) is provided at the bottom output end of the driving motor (6). A coupling (8) is provided at the bottom of the rotating shaft (7). A stirring shaft (9) is provided at the bottom of the coupling (8). Stirring paddles (10) are fixedly connected to the side surface of the stirring shaft (9). There are multiple stirring paddles (10). An output pipe (11) is fixedly connected to the bottom of the stirring barrel (2). The output pipe (11) and the stirring barrel (2) are made of metal materials. A first valve (12) is provided on the side surface of the output pipe (11). A first heating chamber (13) is fixedly connected to the side surface of the stirring barrel (2). The first heating chamber (13) is connected to the top of the vertical frame (1). A first transmission pipe (14) is provided at the top of the steam generator (3). A second transmission pipe (15) is fixedly connected to the side of the first heating chamber (13). The second transmission pipe (15) is connected to the first transmission pipe (14). A second valve (16) is provided on the side surface of the first transmission pipe (14). A third transmission pipe (17) is fixedly connected to the side of the first heating chamber (13). A third valve (18) is provided on the surface of the third transmission pipe (17). A second heating chamber (19) is fixedly connected to the surface of the output pipe (11). A fourth transmission pipe (20) is fixedly connected to the side of the second heating chamber (19). The fourth transmission pipe (20) is connected to the second transmission pipe (15). A fourth valve (21) is provided on the side surface of the fourth transmission pipe (20). A fifth transmission pipe (22) is fixedly connected to the top of the second heating chamber (19). A fifth valve (23) is provided on the surface of the fifth transmission pipe (22).

2. The low-temperature wax paste machine for valve casting according to claim 1, characterized in that: A controller (24) is provided on the surface of the steam generator (3). Operation keys are provided on the surface of the controller (24). A display screen is provided on the surface of the controller (24). A supply pipeline is provided on the side of the steam generator (3).

3. A low-temperature wax paste machine for valve casting according to claim 1, characterized in that: There are through holes inside the top cover (4) and the installation frame (5). The rotating shaft (7) passes through the through holes.

4. A low-temperature wax paste machine for valve casting according to claim 1, characterized in that: The stirring barrel (2) is at the center inside the first heating chamber (13). The second transmission pipe (15) and the third transmission pipe (17) are distributed on the left and right sides of the first heating chamber (13).

5. A low-temperature wax paste machine for valve casting according to claim 1, characterized in that: The second heating chamber (19) is close to the first valve (12). The second heating chamber (19) reaches inside the installation frame (5).

6. The low-temperature wax paste machine for valve casting according to claim 1, characterized in that: A sub-frame (25) is installed on the top of the vertical frame (1). A hydraulic cylinder (26) is installed on the top of the sub-frame (25). There are two hydraulic cylinders (26). The piston rods at the output ends of the two hydraulic cylinders (26) are connected to the top cover (4).

7. A low-temperature wax paste machine for valve casting according to claim 6, characterized in that: The top cover (4) and the stirring barrel (2) are at the center position inside the sub-frame (25). Support columns (27) are fixedly connected inside the sub-frame (25). There are two support columns (27).

8. A low-temperature wax paste machine for valve casting according to claim 7, characterized in that: The top of the support column (27) is fixedly connected to an optical axis (28), the side of the top cover (4) is fixedly connected to a lifting plate (29), a movable hole (30) is formed inside the lifting plate (29), a linear bearing (31) is fixedly connected to the bottom of the lifting plate (29), the linear bearing (31) communicates with the movable hole (30), the optical axis (28) is inside the linear bearing (31) and the movable hole (30), and there are two support columns (27), optical axes (28), lifting plates (29), movable holes (30) and linear bearings (31) respectively.

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