Pressure testing device for nodular iron casting

Abstract

The utility model relates to the technical field of nodular iron castings, and discloses a pressure test device for nodular iron castings, which comprises a base, a movable seat is arranged at the upper end of the base, a sliding chute is arranged at the upper end of the base, and a sliding block and a connecting sleeve are fixedly mounted at the lower end of the movable seat. According to the utility model, through mutual cooperation of the guide rod, the movable plate and the air cylinder I, the horizontal position of the water injection pipe can be adjusted, so that the water injection pipe is sleeved in the nodular iron casting, and the bearing capacity of the nodular iron casting is tested through a water flow pressurization mode; by means of mutual cooperation of the movable base, the lead screw, the motor, the first supporting frame and the second supporting frame, three nodular iron castings can be installed at the same time, position adjustment in the horizontal direction can be achieved, after pressure testing of the nodular iron castings is completed, pressure testing can be conducted on the next nodular iron casting rapidly, and the working efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ductile iron castings, in particular to a pressure testing device for ductile iron castings. Background Art

[0002] Ductile iron is a high-strength cast iron material developed in the 1950s. Its comprehensive performance is close to that of steel. Based on its excellent performance, it has been successfully used to cast some parts with complex stresses and high requirements for strength, toughness and wear resistance. After the processing of ductile iron parts, it is often necessary to use a pressure test device to test the pressure bearing capacity of ductile iron parts.

[0003] According to a search, Chinese patent document, publication number: CN220304995U, discloses a ductile iron pipe fitting pressure test device. By providing a fixing assembly, a movable assembly, a sealing assembly, a pressure test assembly, etc., the ductile iron pipe body can be quickly fixed and both ends can be effectively sealed. The pressure test results are stable and accurate, and the device can be reused continuously. It has a simple structure, a long service life, good results, convenient and quick operation, and strong practicality. However, the pressure test device can only install one ductile iron fitting at a time, and it is necessary to wait until the pressure test is completed before the next ductile iron fitting can be fixed. The work efficiency is low, and the device does not have a recycling function, which easily leads to waste of water resources. Utility Model Content

[0004] (1) Technical problems solved

[0005] In view of the deficiencies in the prior art, the present invention provides a pressure testing device for ductile iron castings, which can solve the problems raised in the above-mentioned background technology.

[0006] (2) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a pressure testing device for ductile iron castings, comprising a base, a movable seat is provided at the upper end of the base, a slide groove is provided at the upper end of the base, a slider and a connecting sleeve are fixedly installed at the lower end of the movable seat, a screw rod is rotatably installed at the lower end of the base through a bracket, a motor is fixedly installed at the outer side of the base, a support frame 1 and a support frame 2 are fixedly installed at the upper end of the movable seat, a positioning plate is fixedly installed at the upper end of the support frame 1, a sealing block is fixedly installed at the outer side of the positioning plate, and an adjusting screw is threadedly installed at the upper end of the positioning plate. Screw, a clamping block is rotatably installed at the lower end of the adjusting screw, a fixed plate is fixedly installed at the upper end of the base, a guide rod is movably installed inside the fixed plate, a movable plate is fixedly installed at one end of the guide rod, a cylinder 1 is fixedly installed on the outside of the fixed plate, a water injection pipe is fixedly installed on the upper end of the movable plate, a positioning ring is fixedly installed on the outside of the water injection pipe, a water inlet is provided at the upper end of the water injection pipe, a drain outlet is provided at the lower end of the water injection pipe, a cylinder 2 is fixedly installed on the outside of the water injection pipe, a piston is provided on the inside of the water injection pipe, and a water tank is provided inside the base.

[0008] Preferably, the slider is movably connected to the inner side of the slide groove, and there are two slide grooves and two sliders respectively.

[0009] Through the above technical solution, the slider moves along the slide groove and guides the movable seat.

[0010] Preferably, the screw rod is fixedly connected to the output end of the motor, and the connecting sleeve is threadedly connected to the outer side of the screw rod.

[0011] Through the above technical solution, the motor is turned on, and the output end of the motor drives the screw to rotate, and the screw drives the connecting sleeve and the movable seat to move horizontally through the threaded structure.

[0012] Preferably, three arc-shaped grooves are respectively provided on the upper ends of the support frame 1 and the support frame 2, and three sealing blocks are equidistantly arranged.

[0013] Through the above technical solution, the ductile iron casting is placed on the upper ends of support frame 1 and support frame 2 through the arc groove, and one end of the ductile iron casting is sleeved on the outside of the sealing block, which improves the sealing between the ductile iron casting and the positioning plate.

[0014] Preferably, the clamping block is fitted with the outer side of the positioning plate, an arc-shaped groove is provided at the lower end of the clamping block, and three adjusting screws and three clamping blocks are respectively provided.

[0015] Through the above technical solution, the adjusting screw is rotated to drive the clamping block to move downward through the threaded structure, and cooperates with a pair of ductile iron castings of the support frame to clamp and fix.

[0016] Preferably, two guide rods are provided, and the output end of the cylinder 1 is fixedly connected to the movable plate.

[0017] Through the above technical solution, the guide rod guides the movable plate, and the cylinder one is turned on, and the output end of the cylinder one drives the movable plate to move horizontally.

[0018] Preferably, the water inlet is located on the side of the drain outlet close to the support frame one, the piston is fixedly connected to the output end of the cylinder two, the water tank is located directly below the drain outlet, and a pressure gauge is provided on the outside of the water injection pipe.

[0019] Through the above technical solution, water flows into the water injection pipe through the water inlet and then into the ductile iron casting. The piston prevents the water from flowing into the drain outlet. The staff uses a pressure gauge to test the bearing capacity of the ductile iron casting. After the pressure test is completed, the output end of cylinder 2 contracts, the piston moves accordingly, and the water flows into the water tank through the drain outlet.

[0020] Compared with the prior art, the present invention provides a pressure testing device for ductile iron castings, which has the following beneficial effects:

[0021] 1. The utility model cooperates with the guide rod, movable plate and cylinder 1 to adjust the horizontal position of the water injection pipe so that it can be inserted into the ductile iron casting. The bearing capacity of the ductile iron casting can be tested by water pressure. The cylinder 2, piston and water tank cooperate with each other. After the pressure test is completed, the water can be recycled and reused, reducing waste.

[0022] 2. The utility model can simultaneously install three ductile iron parts through the cooperation of the movable seat, screw rod, motor, support frame 1 and support frame 2, and can realize horizontal position adjustment, which is convenient for quickly performing pressure test on the next ductile iron part after the pressure test is completed, thereby effectively improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model Figure 1 ;

[0024] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model Figure 2 ;

[0025] Figure 3 This is a schematic diagram of the three-dimensional structure of the utility model Figure 3 ;

[0026] Figure 4 This is a schematic diagram of the cross-sectional structure of the utility model.

[0027] Among them: 1. Base; 2. Movable seat; 3. Slide; 4. Slider; 5. Connecting sleeve; 6. Screw; 7. Motor; 8. Support frame 1; 9. Support frame 2; 10. Positioning plate; 11. Sealing block; 12. Adjusting screw; 13. Clamping block; 14. Fixed plate; 15. Guide rod; 16. Movable plate; 17. Cylinder 1; 18. Water injection pipe; 19. Positioning ring; 20. Water inlet; 21. Drain outlet; 22. Cylinder 2; 23. Piston; 24. Water tank. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Example 1:

[0030] like Figure 1-4 As shown, the utility model provides a pressure testing device for ductile iron castings, including a base 1, a movable seat 2 is provided at the upper end of the base 1, a slide groove 3 is opened at the upper end of the base 1, a slider 4 and a connecting sleeve 5 are fixedly installed at the lower end of the movable seat 2, a screw rod 6 is rotatably installed at the lower end of the base 1 through a bracket, a motor 7 is fixedly installed at the outer side of the base 1, a support frame 1 8 and a support frame 2 9 are fixedly installed at the upper end of the movable seat 2, a positioning plate 10 is fixedly installed at the upper end of the support frame 1 8, a sealing block 11 is fixedly installed at the outer side of the positioning plate 10, an adjusting screw 12 is threadedly installed at the upper end of the positioning plate 10, and the lower end of the adjusting screw 12 is fixedly installed. A clamping block 13 is rotatably installed, a fixed plate 14 is fixedly installed on the upper end of the base 1, a guide rod 15 is movably installed inside the fixed plate 14, a movable plate 16 is fixedly installed on one end of the guide rod 15, a cylinder 17 is fixedly installed on the outside of the fixed plate 14, a water injection pipe 18 is fixedly installed on the upper end of the movable plate 16, a positioning ring 19 is fixedly installed on the outside of the water injection pipe 18, a water inlet 20 is provided at the upper end of the water injection pipe 18, a drain outlet 21 is provided at the lower end of the water injection pipe 18, a cylinder 22 is fixedly installed on the outside of the water injection pipe 18, a piston 23 is provided on the inside of the water injection pipe 18, and a water tank 24 is provided inside the base 1.

[0031] Specifically, the slider 4 is movably connected to the inner side of the chute 3, and there are two chute 3 and two sliders 4. The advantage is that the slider 4 moves along the chute 3 and guides the movable seat 2.

[0032] Specifically, the screw rod 6 is fixedly connected to the output end of the motor 7, and the connecting sleeve 5 is threadedly connected to the outer side of the screw rod 6. The advantage is that when the motor 7 is turned on, the output end of the motor 7 drives the screw rod 6 to rotate, and the screw rod 6 drives the connecting sleeve 5 and the movable seat 2 to move horizontally through the threaded structure.

[0033] Specifically, three arcuate grooves are defined at the tops of support frame 1 (8) and support frame 2 (9), respectively, and three sealing blocks (11) are positioned equidistantly. This advantageously allows the ductile iron casting to be positioned on the tops of support frame 1 (8) and support frame 2 (9) via the arcuate grooves, with one end of the casting fitting encased in the outer surface of sealing block (11), thereby enhancing the seal between the casting and positioning plate (10).

[0034] Example 2:

[0035] like Figure 1-4 As shown, this is an improvement to the previous embodiment. Specifically, a clamping block 13 abuts against the outer side of the positioning plate 10. An arcuate groove is defined at the lower end of the clamping block 13. Three adjusting screws 12 and three clamping blocks 13 are provided. Advantageously, rotating the adjusting screw 12 drives the clamping block 13 downward via the threaded structure, thereby clamping and securing the ductile iron parts in place with the support frame 8.

[0036] Specifically, two guide rods 15 are provided, and the output end of the cylinder 17 is fixedly connected to the movable plate 16. The advantage is that the guide rod 15 guides the movable plate 16, and when the cylinder 17 is turned on, the output end of the cylinder 17 drives the movable plate 16 to move horizontally.

[0037] Specifically, the water inlet 20 is located on the side of the drain outlet 21 near the support frame 1 8. The piston 23 is fixedly connected to the output end of the second cylinder 22. The water tank 24 is located directly below the drain outlet 21, and a pressure gauge is installed on the outside of the water injection pipe 18. The advantage is that water flows through the water inlet 20 into the water injection pipe 18 and then into the ductile iron casting. The piston 23 prevents the water from entering the drain outlet 21. The staff uses the pressure gauge to test the bearing capacity of the ductile iron casting. After the pressure test is completed, the output end of the second cylinder 22 contracts, and the piston 23 moves accordingly, and the water flows through the drain outlet 21 into the water tank 24.

[0038] When in use, the ductile iron parts are placed on the upper ends of support frame 1 8 and support frame 2 9 through the arc groove, and one end of the ductile iron parts is sleeved on the outside of the sealing block 11. The sealing block 11 improves the sealing between the ductile iron parts and the positioning plate 10. The adjusting screw 12 is rotated to drive the clamping block 13 to move downward through the threaded structure, and cooperate with the support frame 1 8 to clamp and fix the ductile iron parts. During pressure testing, the motor 7 is turned on, and the output end of the motor 7 drives the screw rod 6 to rotate, and the slider 4 moves along the slide groove 3 to guide the movable seat 2. The screw rod 6 drives the connecting sleeve 5 and the movable seat 2 to move horizontally through the threaded structure to adjust the position of the ductile iron parts. When the ductile iron parts that need to be pressure tested move to the center position of the base 1, the motor 7 is turned off, and the cylinder 17 is turned on. The guide rod 15 guides the movable plate 16, and the output end of the cylinder 17 drives the movable plate 16 to move horizontally The piston 23 prevents the water from entering the drain port 21. The staff uses a pressure gauge to test the bearing capacity of the ductile iron part. After the pressure test is completed, the output end of the cylinder 22 contracts and the piston 23 moves accordingly. The water flows into the water tank 24 through the drain port 21. Then the cylinder 17 drives the water injection pipe 18 to move out of the ductile iron part. After that, the motor 7 is turned on to move the other ductile iron part to the center position of the base 1 to continue the pressure test. During the pressure test, the ductile iron part can be taken out and replaced. There is no need to wait for the pressure test to be completed before fixing the ductile iron part, which effectively improves the pressure test efficiency.

[0039] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pressure testing device for ductile iron castings, comprising a base (1), characterized in that: The upper end of the base (1) is provided with a movable seat (2), the upper end of the base (1) is provided with a slide groove (3), the lower end of the movable seat (2) is fixedly installed with a slider (4) and a connecting sleeve (5), the lower end of the base (1) is rotatably installed with a screw rod (6) through a bracket, the outer side of the base (1) is fixedly installed with a motor (7), the upper end of the movable seat (2) is fixedly installed with a support frame 1 (8) and a support frame 2 (9), the upper end of the support frame 1 (8) is fixedly installed with a positioning plate (10), the outer side of the positioning plate (10) is fixedly installed with a sealing block (11), the upper end of the positioning plate (10) is threadedly installed with an adjusting screw (12), the lower end of the adjusting screw (12) is rotatably installed with a clamping block (13), the base (1 ) is fixedly mounted on the upper end of the base (1), a guide rod (15) is movably mounted inside the fixed plate (14), a movable plate (16) is fixedly mounted on one end of the guide rod (15), a cylinder 1 (17) is fixedly mounted on the outer side of the fixed plate (14), a water injection pipe (18) is fixedly mounted on the upper end of the movable plate (16), a positioning ring (19) is fixedly mounted on the outer side of the water injection pipe (18), a water inlet (20) is provided at the upper end of the water injection pipe (18), a drain outlet (21) is provided at the lower end of the water injection pipe (18), a cylinder 2 (22) is fixedly mounted on the outer side of the water injection pipe (18), a piston (23) is provided on the inner side of the water injection pipe (18), and a water tank (24) is provided inside the base (1).

2. A pressure testing device for ductile iron castings according to claim 1, characterized in that: The slider (4) is movably connected to the inner side of the slide groove (3), and there are two slide grooves (3) and two sliders (4) respectively.

3. A pressure testing device for ductile iron castings according to claim 1, characterized in that: The screw rod (6) is fixedly connected to the output end of the motor (7), and the connecting sleeve (5) is threadedly connected to the outer side of the screw rod (6).

4. A pressure testing device for ductile iron castings according to claim 1, characterized in that: The upper ends of the support frame 1 (8) and the support frame 2 (9) are respectively provided with three arc-shaped grooves, and three sealing blocks (11) are equidistantly arranged.

5. The pressure testing device for ductile iron castings according to claim 1, characterized in that: The clamping block (13) is fitted with the outer side of the positioning plate (10), and an arc groove is provided at the lower end of the clamping block (13). Three adjusting screws (12) and three clamping blocks (13) are provided respectively.

6. A pressure testing device for ductile iron castings according to claim 1, characterized in that: There are two guide rods (15), and the output end of the cylinder 1 (17) is fixedly connected to the movable plate (16).

7. A pressure testing device for ductile iron castings according to claim 1, characterized in that: The water inlet (20) is located on the side of the drain outlet (21) close to the support frame 1 (8), the piston (23) is fixedly connected to the output end of the cylinder 2 (22), the water tank (24) is located directly below the drain outlet (21), and a pressure gauge is provided on the outside of the water injection pipe (18).

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