High-temperature-resistant cut-off valve shell casting device

Abstract

The invention belongs to the relevant technical field of casting device machining, and particularly discloses a high-temperature-resistant cut-off valve shell casting device which comprises a casting box and a sand box, a frame is arranged at the rear end of the casting box, a bearing sliding mechanism is arranged in the frame, a sleeve shell is arranged in the casting box, and an abutting table is arranged in the middle of the rear end of the sleeve shell. The two ends of the inner side of the sleeve shell make contact with the bottom of the sand box through vibration mechanisms, sliding rail rods are arranged on the two sides of the outer wall of the sand box, guide rods are arranged on the two sides of the upper surface of the casting box, sliding bases are slidably installed on the outer sides of the two guide rods, and an upper pressing base is jointly arranged between the two sliding bases. The upper surface of the upper pressing seat is connected with a downward pressing mechanism through an arranged connecting assembly, guide driving mechanisms are arranged on the two sides of the outer wall of the upper pressing seat, sand grains in the sand box can be shaken up, then gaps can be avoided in the casting process, and the casting quality is improved.

Description

Technical Field

[0001] The invention belongs to the technical field related to casting device processing, and specifically discloses a high-temperature resistant cut-off valve housing casting device. Background Art

[0002] The cut-off valve is a type of actuator in the automation system, which is composed of a multi-spring pneumatic diaphragm actuator or a floating piston actuator and a regulating valve. The cut-off valve has a wide range of uses and can be used to cut off gas, combustion air, cold air and flue gas, etc.

[0003] When producing this valve, sand casting is generally used. Sand casting requires the use of a sand box device. The existing sand box has a simple structure when in use and needs to rely on manual operation for multiple times. There will be gaps when filling sand inside the sand box, and then when casting the valve housing, it is not dense enough, which affects the molding of the housing. For this reason, we need to make improvements. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the background technology, and a high-temperature resistant cut-off valve housing casting device is proposed, including a casting box and a sand box, a frame is provided at the rear end of the casting box, a supporting sliding mechanism is provided inside the frame, a sleeve is provided inside the casting box, a stop is provided in the middle of the rear end of the sleeve, both ends of the inner side of the sleeve are in contact with the bottom of the sand box by a vibration mechanism, slide rails are provided on both sides of the outer wall of the sand box, guide rods are provided on both sides of the upper surface of the casting box, slide seats are slidably installed on the outer sides of the two guide rods, an upper pressure seat is provided between the two groups of slide seats, the upper surface of the upper pressure seat is connected to the lower pressure mechanism through a connecting component, and guide driving mechanisms are provided on both sides of the outer wall of the upper pressure seat;

[0005] Both ends of the two slide rail rods extend downward and the upper surfaces are configured as curved surfaces. The lower end of the guide drive mechanism slides and presses against the upper surfaces of the slide rail rods, so that the sand box can oscillate left and right.

[0006] Preferably, the supporting sliding mechanism includes a bottom rod fixedly arranged in the middle of the frame, a support seat is slidably installed on the upper outer side of the bottom rod, a load-bearing rod is fixedly arranged on the upper end of the support seat, a screw rod is threadedly connected to the upper inner side of the support seat, one end of the screw rod is rotatably engaged with the outer side of the platform, the end of the screw rod away from the platform is connected to a motor, the motor is installed on the outer side of the frame, limit platforms are fixedly arranged on both sides of the upper surface of the platform, and the load-bearing rod and the limit platform are slidably engaged with each other.

[0007] Preferably, the vibration mechanism includes a support plate fixedly arranged at one end of the inner side of the casing, the other side of the support plate is connected to the inner bottom wall of the casing, a plurality of groups of vibration spring seats are arranged on the upper surface of the support plate, and the vibration spring seats are in contact with the bottom of the sand box.

[0008] Preferably, the connecting assembly includes two reinforcing rods transversely arranged on the upper surface of the upper pressure seat, an L-shaped rod is fixedly arranged on the upper surface of the upper pressure seat and near the connection between the two reinforcing rods, the L-shaped rod is connected to the downward pressing mechanism, the two reinforcing rods and the interior of the upper pressure seat are connected together and a grouting pipe is installed, two frame plates are vertically arranged on the upper surface of the upper pressure seat, and slides are slidably installed on the outside of the ends of the two frame plates away from each other, and the slides are arranged in an L shape.

[0009] Preferably, the pressing mechanism comprises a hydraulic cylinder, the telescopic end of the hydraulic cylinder is connected to the lower end of the L-shaped rod, and the bottom of the hydraulic cylinder is fixedly arranged on the upper surface of the platform.

[0010] Preferably, the guiding driving mechanism includes a slide groove opened on one side of the upper pressure seat, a slider is slidably installed in the slide groove, a sleeve is provided on the lower surface of the slider, an extrusion spring is provided in the sleeve, a push rod is slidably installed in the sleeve and at the lower end of the extrusion spring, a connecting rod is fixedly provided at the bottom end of the push rod, a ball is provided at the lower part of the connecting rod, the ball is in rolling contact with the surface of the slide rail rod, a support plate is fixedly provided at one end of the outer side of the upper pressure seat, a cylinder is installed on the outer side of the support plate, and the telescopic end of the cylinder is connected to the outer side of the slider.

[0011] Preferably, a rotating shaft is rotatably installed in the middle of the shell, and the end of the rotating shaft away from the sand box is rotatably matched with the inside of the platform. A U-shaped frame is arranged above the outer side of the rotating shaft, and the U-shaped frame is abutted against the bottom of the sand box. U-shaped clamping rods are fixedly arranged above both ends of the U-shaped frame, and the two clamping rods are wrapped around the front end and the rear end of the outer side of the sand box.

[0012] Preferably, limit rods are symmetrically slidably inserted on both sides of the shell, one end of the two limit rods on the same side is movably extended into the inside of the clamping rod, and the two limit rods on the same side are commonly provided with a U-shaped rod at one end away from the clamping rod.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The supporting sliding mechanism can be used to push the sand box to one end after the later casting is completed, making it convenient for workers to change the sand.

[0015] By setting the slide rail rod and the guide drive mechanism, the sand box can be made to vibrate left and right above the vibration spring seat. Therefore, after the sand core is loaded, the sand grains filled in the sand box can be shaken to fill the sand grains, thereby improving the casting quality of the valve housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 It is a structural schematic diagram of another angle of the present invention;

[0018] Figure 3 It is a schematic diagram of the connection structure between the sand box and the casing of the present invention;

[0019] Figure 4 It is a schematic diagram of the connection structure between the sleeve and the bottom rod of the present invention;

[0020] Figure 5 It is a schematic diagram of the connection structure between the casing and the U-shaped frame of the present invention;

[0021] Figure 6 It is a schematic diagram of the connection structure between the clamping rod and the limiting rod of the present invention.

[0022] In the figure: 1. casting box; 2. frame; 3. bearing rod; 4. support seat; 5. motor; 6. bottom rod; 7. guide rod; 8. upper pressure seat; 9. slide plate; 10. L-shaped rod; 11. slide seat; 12. cylinder; 13. hydraulic cylinder; 14. limit table; 15. sleeve; 16. sand box; 17. slide rail rod; 18. limit rod; 19. U-shaped rod; 20. casing; 21. reinforcement rod; 22. frame plate; 23. grouting pipe; 24. support plate; 25. clamping rod; 26. U-shaped frame; 27. rotating shaft; 28. vibration spring seat; 29. ​​slider; 30. push rod; 31. ball; 32. connecting rod; 33. extrusion spring; 34. screw rod; 35. slide groove; 36. push table. DETAILED DESCRIPTION

[0023] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0025] like Figure 1-Figure 6A high temperature resistant cut-off valve housing casting device shown in the figure comprises a casting box 1 and a sand box 16, a frame 2 is provided at the rear end of the casting box 1, a supporting sliding mechanism is provided inside the frame 2, a sleeve 20 is provided inside the casting box 1, a stop 36 is provided in the middle of the rear end of the sleeve 20, both ends of the inner side of the sleeve 20 are in contact with the bottom of the sand box 16 through a vibration mechanism, slide rails 17 are provided on both sides of the outer wall of the sand box 16, guide rods 7 are provided on both sides of the upper surface of the casting box 1, slide seats 11 are slidably installed on the outer sides of the two guide rods 7, an upper pressure seat 8 is provided between the two groups of slide seats 11, the upper surface of the upper pressure seat 8 is connected to the lower pressure mechanism through a connecting assembly, and a guide driving mechanism is provided on both sides of the outer wall of the upper pressure seat 8;

[0026] The two ends of the two slide rails 17 extend downward and the upper surfaces are configured as curved surfaces, so as to guide the lower end of the driving mechanism to slide against the upper surfaces of the slide rails 17 , so that the sand box 16 can oscillate left and right.

[0027] The supporting sliding mechanism includes a bottom rod 6 fixedly arranged in the middle of the frame 2, a support seat 4 is slidably installed on the upper outer side of the bottom rod 6, a bearing rod 3 is fixedly arranged on the upper end of the support seat 4, a screw rod 34 is threadedly connected to the upper inner side of the support seat 4, one end of the screw rod 34 is rotatably matched with the outer side of the platform 36, and the end of the screw rod 34 away from the platform 36 is connected to the motor 5, which is installed on the outer side of the frame 2, and both sides of the upper surface of the platform 36 are fixedly provided with a limit platform 14, and the bearing rod 3 and the limit platform 14 are slidably matched;

[0028] Reference Manual Attached Figure 1 It can be seen that after the motor 5 is connected to the power supply, it drives the screw 34 to rotate, thereby allowing the support seat 4 to slide outside the bottom rod 6, prompting the bearing rod 3 at the upper end of the support seat 4 to move to one side of the upper pressure seat 8, and subsequently pushing the sand box 16 out of the casing 20.

[0029] The vibration mechanism includes a support plate 24 fixedly arranged at one end of the inner side of the casing 20, the other side of the support plate 24 is connected to the inner bottom wall of the casing 20, and a plurality of groups of vibration spring seats 28 are arranged on the upper surface of the support plate 24, and the vibration spring seats 28 are in contact with the bottom of the sand box 16;

[0030] Reference Manual Attached Figure 3 It can be seen that the vibration spring seat 28 is in contact with the bottom of the sand box 16. During the extrusion process, the vibration spring seat 28 can greatly enhance the vibration effect, thereby shaking the sand grains inside the sand box 16 and compacting the sand grains.

[0031] The connecting assembly includes two reinforcing rods 21 arranged transversely on the upper surface of the upper press seat 8, an L-shaped rod 10 is fixedly arranged on the upper surface of the upper press seat 8 and near the connection between the two reinforcing rods 21, the L-shaped rod 10 is connected to the downward pressing mechanism, the two reinforcing rods 21 and the interior of the upper press seat 8 are connected together and a grouting pipe 23 is installed, and two frame plates 22 are vertically arranged on the upper surface of the upper press seat 8, and a slide plate 9 is slidably installed on the outside of the ends of the two frame plates 22 away from each other, and the slide plate 9 is arranged in an L shape;

[0032] Reference Manual Attached Figure 1 and Figure 2 It can be seen that the two reinforcing rods 21 can enhance the stability of the upper press seat 8, and the grouting pipe 23 can inject the poured slurry into the interior of the sand box 16 to complete the casting;

[0033] When the sand box 16 is lifted, the slide plate 9 can slide to the outer edge of the sand box 16 , and then the L-shaped slide plate 9 can be clamped against the lower edge of the sand box 16 , thereby lifting the sand box 16 from the inside of the casing 20 .

[0034] The pressing mechanism includes a hydraulic cylinder 13, the telescopic end of the hydraulic cylinder 13 is connected to the lower end of the L-shaped rod 10, and the bottom of the hydraulic cylinder 13 is fixedly arranged on the upper surface of the platform 36;

[0035] Reference Manual Attached Figure 1 and Figure 2 It can be seen that the hydraulic cylinder 13 can drive the L-shaped rod 10 to press down, so that the upper pressing seat 8 can press the sand particles above the inside of the sand box 16.

[0036] The guide drive mechanism includes a slide groove 35 opened on one side of the upper pressure seat 8, a slider 29 is slidably installed in the slide groove 35, a sleeve 15 is provided on the lower surface of the slider 29, an extrusion spring 33 is provided inside the sleeve 15, a push rod 30 is slidably installed inside the sleeve 15 and at the lower end of the extrusion spring 33, a connecting rod 32 is fixedly provided at the bottom end of the push rod 30, a ball 31 is provided below the connecting rod 32, and the ball 31 is in rolling contact with the surface of the slide rail rod 17, a support plate is fixedly provided at one end of the outer side of the upper pressure seat 8, a cylinder 12 is installed on the outer side of the support plate, and the telescopic end of the cylinder 12 is connected to the outer side of the slider 29;

[0037] Reference Manual Attached Figure 1 , Figure 2 and Figure 4 It can be seen that under the telescopic drive of the cylinder 12, the slider 29 can slide inside the slide groove 35, so that the support rod 30 and the sleeve 15 can drive the ball 31 at the lower end to roll on the upper surface of the slide rail rod 17, thereby causing the two ends of the sand box 16 to be in an unbalanced state through the shape of the slide rail rod 17, thereby allowing the sand particles inside the sand box 16 to shake, and the reciprocating lifting and lowering of the hydraulic cylinder 13 can also enhance the vibration intensity of the sand box 16.

[0038] A rotating shaft 27 is rotatably installed in the middle of the casing 20, and one end of the rotating shaft 27 away from the sand box 16 is rotatably matched with the inside of the abutment 36. A U-shaped frame 26 is arranged above the outer side of the rotating shaft 27, and the U-shaped frame 26 abuts against the bottom of the sand box 16. U-shaped clamping rods 25 are fixedly arranged above both ends of the U-shaped frame 26, and the two clamping rods 25 are wrapped around the front end and the rear end of the outer side of the sand box 16;

[0039] Reference Manual Attached Figure 5 It can be seen that, under the connection of the rotating shaft 27 , the U-shaped frame 26 and the clamping rod 25 can wrap the sand box 16 , and when the push rod 30 is squeezed, the sand box 16 can be shaken inside the casing 20 .

[0040] The limiting rods 18 are symmetrically slidably inserted on both sides of the housing 20. One end of the two limiting rods 18 on the same side is movably extended into the inside of the clamping rod 25. The ends of the two limiting rods 18 on the same side away from the clamping rod 25 are jointly provided with a U-shaped rod 19.

[0041] Reference Manual Attached Figure 6 It can be seen that the limiting rod 18 can be inserted into the clamping rod 25 together with the externally connected U-shaped rod 19, thereby locking the clamping rod 25, so that when the upper pressing seat 8 squeezes the sand box 16, it can ensure that the sand box 16 will not tilt.

[0042] Working principle: When in use, it is necessary to first fill some sand at the bottom of the sand box 16, then place the valve sand core of the molding cavity on the surface of the sand, and then fill the sand to submerge the valve sand core. In order to ensure that the sand inside the sand box 16 can be more compacted, the hydraulic cylinder 13 is driven to move downward, so that the sleeve 15 and the push rod 30 are close to the position of the corresponding slide rail rod 17, and then the ball 31 at the lower end of the push rod 30 is prompted to contact the upper surface of the slide rail rod 17. Since the upper surfaces of the slide rail rod 17 are not in the same horizontal plane, and both ends are bent and extended to the lower ends, the extrusion spring 33 inside the sleeve 15 of the push rod 30 will automatically adjust the contact height according to the slope during the contact process. The sliders 29 on both sides of the upper pressure seat 8 can be driven by the cylinder 12 in an interlaced manner, so that the push rod 30 can make the sand box 16 shake left and right when pressing the slide rail rod 17. Under the setting of the vibration spring seat 28, the sand inside the sand box 16 oscillates left and right to ensure that there is no gap inside the sand, and then the cylinder 12 is driven to cause By misaligning the slider 29 with the slide rail rod 17, the hydraulic cylinder 13 can make the upper press seat 8 fit into the inside of the sand box 16, and squeeze the sand grains above the inside of the sand box 16 from the upper end. When the upper press seat 8 squeezes the sand grains inside the sand box 16, in order to ensure that the sand box 16 can be pressurized, the worker can insert the U-shaped rod 19 and the limit rod 18 into the inside of the clamping rod 25 to ensure the bearing capacity of the lower end of the sand box 16, and then pour the poured slurry into the upper press seat 8 through the grouting pipe 23, and the slurry flows around the valve sand core. In this way, the casting work is completed. After completion, the slide plate 9 at the frame plate 22 is pushed to the front and rear end edges of the sand box 16, and then the sand box 16 is lifted. After lifting it above the bearing rod 3, the motor 5 drives the screw 34 to rotate, causing the support seat 4 to move outside the bottom rod 6, pushing the support seat 4 and the bearing rod 3 to the bottom of the sand box 16, and then placing the sand box 16 on one end of the bearing rod 3. The sand box 16 is then moved from the top of the inside of the casting box 1 to the front end, and the worker processes the cavity inside the sand box 16.

[0043] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. A high temperature resistant cut-off valve housing casting device, comprising a casting box (1) and a sand box (16), characterized in that: The casting box (1) is provided with a frame (2) at the rear end, a supporting sliding mechanism is provided inside the frame (2), a casing (20) is provided inside the casting box (1), a stop platform (36) is provided in the middle of the rear end of the casing (20), both ends of the inner side of the casing (20) are in contact with the bottom of the sand box (16) by means of a vibration mechanism, both sides of the outer wall of the sand box (16) are provided with slide rails (17), both sides of the upper surface of the casting box (1) are provided with guide rods (7), the outer sides of the two guide rods (7) are slidably mounted with slide seats (11), an upper pressure seat (8) is provided between the two groups of slide seats (11), the upper surface of the upper pressure seat (8) is connected to a lower pressure mechanism through a connecting assembly, and both sides of the outer wall of the upper pressure seat (8) are provided with a guide driving mechanism; The two ends of the two slide rails (17) extend downward and the upper surfaces are configured as curved surfaces. The lower end of the guide drive mechanism slides against the upper surface of the slide rails (17) to enable the sand box (16) to oscillate left and right.

2. A high temperature resistant cut-off valve housing casting device according to claim 1, characterized in that: The supporting sliding mechanism comprises a bottom rod (6) fixedly arranged in the middle of the frame (2); a support seat (4) is slidably installed on the upper outer side of the bottom rod (6); a bearing rod (3) is fixedly arranged on the upper end of the support seat (4); a screw rod (34) is threadedly connected to the upper inner side of the support seat (4); one end of the screw rod (34) is rotatably engaged with the outer side of the platform (36); one end of the screw rod (34) is connected to a motor (5) away from the platform (36); the motor (5) is installed on the outer side of the frame (2); limiting platforms (14) are fixedly arranged on both sides of the upper surface of the platform (36); the bearing rod (3) and the limiting platform (14) are slidably engaged with each other.

3. A high temperature resistant cut-off valve housing casting device according to claim 1, characterized in that: The vibration mechanism comprises a support plate (24) fixedly arranged at one end of the inner side of the casing (20), the other side of the support plate (24) being connected to the inner bottom wall of the casing (20), a plurality of groups of vibration spring seats (28) being arranged on the upper surface of the support plate (24), and the vibration spring seats (28) being in contact with the bottom of the sand box (16).

4. A high temperature resistant cut-off valve housing casting device according to claim 1, characterized in that: The connection assembly comprises two reinforcing rods (21) arranged transversely on the upper surface of the upper pressure seat (8); an L-shaped rod (10) is fixedly arranged on the upper surface of the upper pressure seat (8) and close to the connection between the two reinforcing rods (21); the L-shaped rod (10) is connected to the downward pressing mechanism; the two reinforcing rods (21) and the interior of the upper pressure seat (8) are connected together and a grouting pipe (23) is installed; two frame plates (22) are vertically arranged on the upper surface of the upper pressure seat (8); a slide plate (9) is slidably installed on the outside of the ends of the two frame plates (22) that are away from each other; the slide plate (9) is arranged in an L shape.

5. A high temperature resistant cut-off valve housing casting device according to claim 4, characterized in that: The pressing mechanism comprises a hydraulic cylinder (13), the telescopic end of the hydraulic cylinder (13) is connected to the lower end of the L-shaped rod (10), and the bottom of the hydraulic cylinder (13) is fixedly arranged on the upper surface of the abutment (36).

6. A high temperature resistant cut-off valve housing casting device according to claim 1, characterized in that: The guide drive mechanism comprises a slide groove (35) provided on one side of the upper pressure seat (8), a slider (29) being slidably installed inside the slide groove (35), a sleeve (15) being provided on the lower surface of the slider (29), a compression spring (33) being provided inside the sleeve (15), a push rod (30) being slidably installed inside the sleeve (15) and at the lower end of the compression spring (33), a connecting rod (32) being fixedly provided at the bottom end of the push rod (30), a ball (31) being provided at the lower part of the connecting rod (32), the ball (31) being in rolling contact with the surface of the slide rail rod (17), a support plate being fixedly provided at one end of the outer side of the upper pressure seat (8), a cylinder (12) being installed on the outer side of the support plate, and the telescopic end of the cylinder (12) being connected to the outer side of the slider (29).

7. A high temperature resistant cut-off valve housing casting device according to claim 1, characterized in that: A rotating shaft (27) is rotatably installed in the middle of the sleeve shell (20), and one end of the rotating shaft (27) away from the sand box (16) is rotatably matched with the inside of the abutment (36). A U-shaped frame (26) is arranged above the outer side of the rotating shaft (27), and the U-shaped frame (26) is abutted against the bottom of the sand box (16). U-shaped clamping rods (25) are fixedly arranged above both ends of the U-shaped frame (26), and the two clamping rods (25) are wrapped around the front end and the rear end of the outer side of the sand box (16).

8. A high temperature resistant cut-off valve housing casting device according to claim 7, characterized in that: Limit rods (18) are symmetrically slidably inserted into both sides of the sleeve (20), one end of the two limit rods (18) on the same side movably extends into the inside of the clamping rod (25), and the ends of the two limit rods (18) on the same side away from the clamping rod (25) are jointly provided with a U-shaped rod (19).

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