A casting air tightness testing apparatus

Abstract

The utility model discloses a kind of casting airtight detection equipment, it is related to airtight detection technical field, the scheme includes the water tank with top open setting, the top of the water tank is fixedly connected with support, conveying mechanism is installed in the inside of the support, multiple lower sealing mechanisms are installed on the conveying mechanism, valve body casting is placed on the lower sealing mechanism, the top of the support is equipped with cylinder, the utility model is convenient for to valve body casting for continuous conveying by the conveying mechanism and lower sealing mechanism set, can improve detection efficiency, by setting upper sealing mechanism and pressure mechanism, not only can fast realize the airtightness detection of valve body casting, and still can drive valve body casting to rotate in detection process, can be observed comprehensively to valve body casting, improve practicability.

Description

Technical Field

[0001] This utility model relates to the field of airtightness testing technology, specifically to an airtightness testing device for castings. Background Technology

[0002] After the valve casting is processed, it needs to be tested for air tightness. This requires operators to use air tightness testing equipment. A search revealed that Chinese Patent Publication No. CN217237105U discloses an air tightness testing device for valve castings, which relates to the technical field of valve casting testing equipment. The device includes an open-type water tank with a clamping assembly fixedly installed at the bottom of the tank. A testing assembly is fixedly connected inside the tank. The testing assembly includes a valve casting. A first flange is connected to the outside of the valve casting's liquid inlet, and a second flange is connected to the outside of the valve casting's liquid outlet. An air inlet pipe is fixedly connected to the free end side of the first flange.

[0003] While the above technical solution facilitates the fixing and airtightness testing of valve castings, it requires multiple bolts to seal and fix both ends of the valve casting during use. After the test is completed, all bolts must be removed to remove the valve casting, which is cumbersome, reduces work efficiency, and makes it inconvenient to observe various positions of the valve casting during the test. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a casting airtightness testing device, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a casting airtightness testing device, comprising a water tank with an open top, a bracket fixedly connected to the top of the water tank, a conveying mechanism installed inside the bracket, multiple lower sealing mechanisms installed on the conveying mechanism, a valve body casting placed on the lower sealing mechanism, a cylinder installed on the top of the bracket, an upper sealing mechanism fixedly connected to the bottom end of the cylinder, a controller installed on the front side of the bracket, and a pressurizing mechanism that cooperates with the upper sealing mechanism on one side of the water tank;

[0006] The conveying mechanism includes conveying rollers symmetrically rotatably connected to both sides inside the bracket, with two synchronous belts symmetrically sleeved between the two conveying rollers, and a first motor for driving the conveying rollers to rotate is installed on one side of the bracket.

[0007] The lower sealing mechanism includes a base plate fixedly connected between two synchronous belts. The top of the base plate is rotatably connected to a placement seat via a bearing. The placement seat contains a first sealing gasket for sealing the bottom of the valve body casting. The inner wall of the bracket is symmetrically fixedly connected to two support plates that contact the bottom of the base plate.

[0008] Preferably, the upper surface of the base plate has two symmetrically formed sliding grooves, and a bidirectional lead screw is rotatably connected between the two sliding grooves. The outer surface of the bidirectional lead screw is symmetrically threaded with two movable rods that are slidably connected to the inside of the sliding grooves. One end of the movable rod is fixedly connected to a spring telescopic rod, and one end of the spring telescopic rod is fixedly connected to an arc-shaped plate. The outer surface of the arc-shaped plate is embedded with rotatably connected ball bearings, which can limit the movement of the valve body casting.

[0009] Preferably, the upper sealing mechanism includes a top plate fixedly connected to the bottom of the cylinder, a pressing seat rotatably connected to the bottom of the top plate, a second sealing gasket for sealing the top of the valve body casting embedded in the bottom of the pressing seat, a transparent protective cover fixedly connected to the outer surface of the top plate, and an electromagnetic exhaust valve installed near the center of the top of the top plate, which can seal the top of the valve body casting, and the protective cover can prevent water splashing.

[0010] Preferably, a second motor is installed on the outer surface of the top plate, and a gear is fixedly connected to the output shaft of the second motor. A gear ring that meshes with the gear is fixedly connected to the outer surface of the pressing seat, which facilitates the rotation of the valve body casting and allows for comprehensive observation.

[0011] Preferably, the pressurizing mechanism includes a pressurizing water pump installed on one side of the water tank. The input end of the pressurizing water pump is connected to the water tank, and the output end of the pressurizing water pump is fixedly connected to a hose. One end of the hose is fixedly installed on the top of the top plate and connected to the inside of the pressing seat. A pressure sensor is fixedly installed on one side of the hose, which can pressurize water inside the valve body casting.

[0012] Preferably, one side of the bracket is provided with a transparent through window for easy observation.

[0013] This utility model provides a casting airtightness testing device. It has the following beneficial effects:

[0014] This casting airtightness testing equipment, through its conveying mechanism and lower sealing mechanism, facilitates continuous conveying of valve body castings, thereby improving testing efficiency. The upper sealing mechanism and pressurizing mechanism not only enable rapid airtightness testing of valve body castings but also allow for rotation of the castings during testing, facilitating comprehensive observation and enhancing practicality. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the conveying mechanism of this utility model;

[0017] Figure 3 This is a schematic diagram of the lower sealing mechanism of this utility model;

[0018] Figure 4 This is a partial structural schematic diagram of the present invention;

[0019] Figure 5 This is a partial structural diagram of the upper sealing mechanism of this utility model.

[0020] In the diagram, 1. Water tank; 2. Bracket; 21. Support plate; 3. Conveying mechanism; 31. Conveying roller; 32. Synchronous belt; 33. First motor; 4. Lower sealing mechanism; 41. Base plate; 42. Placement seat; 43. First sealing gasket; 44. Bidirectional lead screw; 45. Moving rod; 46. Spring telescopic rod; 47. Arc plate; 48. Ball bearing; 5. Valve body casting; 6. Cylinder; 7. Upper sealing mechanism; 71. Top plate; 72. Pressing seat; 73. Second sealing gasket; 74. Transparent protective cover; 75. Second motor; 76. Gear; 77. Gear ring; 8. Controller; 9. Pressurizing mechanism; 91. Pressurizing water pump; 92. Hose. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example:

[0022] like Figures 1 to 5 As shown, a casting airtightness testing device includes a water tank 1 with an open top, a support 2 fixedly connected to the top of the water tank 1, a conveying mechanism 3 installed inside the support 2, a plurality of lower sealing mechanisms 4 installed on the conveying mechanism 3, a valve body casting 5 placed on the lower sealing mechanism 4, a cylinder 6 installed on the top of the support 2, an upper sealing mechanism 7 fixedly connected to the bottom end of the cylinder 6, and a pressurizing mechanism 9 that cooperates with the upper sealing mechanism 7 on one side of the water tank 1.

[0023] The conveying mechanism 3 and the lower sealing mechanism 4 facilitate continuous conveying of the valve body casting 5, which can improve the testing efficiency. The upper sealing mechanism 7 and the pressurizing mechanism 9 can not only quickly realize the airtightness test of the valve body casting 5, but also drive the valve body casting 5 to rotate during the test, allowing for a comprehensive observation of the valve body casting 5 and improving its practicality.

[0024] It should be noted that in this technical solution, a controller 8 is installed on the front side of the bracket 2. The controller 8 facilitates the control of various mechanisms. Controlling the equipment through the controller 8 is a common technical means in this field and belongs to the prior art.

[0025] like Figure 1 and Figure 2 As shown, the conveying mechanism 3 includes conveying rollers 31 that are symmetrically rotatably connected to both sides inside the bracket 2. Two synchronous belts 32 are symmetrically sleeved between the two conveying rollers 31. A first motor 33 for driving the conveying rollers 31 to rotate is installed on one side of the bracket 2.

[0026] The first motor 33 rotates, driving the conveyor roller 31 and the synchronous belt 32 to rotate, which in turn drives the lower sealing mechanism 4 to rotate. This allows for continuous conveying of the valve body casting 5 placed on the lower sealing mechanism 4, enabling the next component to enter the detection position after one component has been detected, thus improving detection efficiency.

[0027] like Figures 1 to 3 As shown, the lower sealing mechanism 4 includes a base plate 41 fixedly connected between two synchronous belts 32. A placement seat 42 is rotatably connected to the top of the base plate 41 via a bearing. A first sealing gasket 43 for sealing the bottom of the valve body casting 5 is embedded inside the placement seat 42. Two support plates 21 that are in contact with the bottom of the base plate 41 are symmetrically fixedly connected to the inner wall of the bracket 2. Two sliding grooves are symmetrically opened on the upper surface of the base plate 41. A bidirectional lead screw 44 is rotatably connected between the two sliding grooves. Two movable rods 45 that are slidably connected to the inside of the sliding grooves are symmetrically threaded on the outer surface of the bidirectional lead screw 44. A spring telescopic rod 46 is fixedly connected to one end of the movable rod 45. An arc-shaped plate 47 is fixedly connected to one end of the spring telescopic rod 46. A ball bearing 48 is rotatably connected to the outer surface of the arc-shaped plate 47.

[0028] Place the bottom end of the valve body casting 5 on the first sealing gasket 43 inside the placement seat 42. Rotating the bidirectional screw 44 can drive the moving rods 45 on both sides, the spring telescopic rod 46 and the arc plate 47 to move relative to each other, which can limit the valve body casting 5 and improve the stability of the valve body casting 5 during movement and sealing.

[0029] like Figure 1 , Figure 4 and Figure 5 As shown, the upper sealing mechanism 7 includes a top plate 71 fixedly connected to the bottom of the cylinder 6. A pressing seat 72 is rotatably connected to the bottom of the top plate 71. A second sealing gasket 73 is embedded in the bottom of the pressing seat 72 and installed on the top of the sealing valve body casting 5. A transparent protective cover 74 is fixedly connected to the outer surface of the top plate 71.

[0030] The operation of cylinder 6 can drive top plate 71 and pressing seat 72 to move downwards. Together with the placement seat 42, it can seal the top of valve body casting 5. The transparent protective cover 74 can shield the detection position to prevent water leakage and splashing during detection.

[0031] It should be noted that in this technical solution, an electromagnetic exhaust valve is installed near the center of the top of the top plate 71. The electromagnetic exhaust valve is controlled by the controller 8. The electromagnetic exhaust valve can facilitate the discharge of air from the valve body casting 5 during the water filling process.

[0032] A second motor 75 is mounted on the outer surface of the top plate 71. A gear 76 is fixedly connected to the output shaft of the second motor 75. A gear ring 77 that meshes with the gear 76 is fixedly connected to the outer surface of the pressing seat 72.

[0033] During the testing process, the rotation of the second motor 75 can drive the pressing seat 72 to rotate through the gear 76 and the gear ring 77, which in turn can drive the valve body casting 5 to rotate, making it convenient to observe the valve body casting 5 comprehensively and improving its practicality.

[0034] The pressurizing mechanism 9 includes a pressurizing water pump 91 installed on one side of the water tank 1. The input end of the pressurizing water pump 91 is connected to the water tank 1. The output end of the pressurizing water pump 91 is fixedly connected to a hose 92. One end of the hose 92 is fixedly installed on the top of the top plate 71 and connected to the inside of the pressing seat 72. A pressure sensor is fixedly installed on one side of the hose 92.

[0035] The pressurized water pump 91 can deliver water from the water tank 1 to the valve body casting 5 through the hose 92. If there is a problem with the sealing, water will leak, and the pressure sensor will also detect it.

[0036] One side of the bracket 2 is equipped with a transparent through window to facilitate observation of the detection position.

[0037] Working principle: During use, the bottom end of the valve body casting 5 is placed on the first sealing gasket 43 inside the placement seat 42. Rotating the bidirectional screw 44 can drive the moving rods 45 on both sides, the spring telescopic rod 46 and the arc plate 47 to move relative to each other, which can limit the valve body casting 5 and improve the stability of the valve body casting 5 during movement and sealing. The rotation of the first motor 33 drives the conveying roller 31 and the synchronous belt 32 to rotate, which in turn drives the lower sealing mechanism 4 to rotate, which can continuously convey the valve body casting 5 placed on the lower sealing mechanism 4. After one is detected, the next one can enter the detection position for detection, which can improve detection efficiency. The operation of the cylinder 6 can drive the top plate 71 and the pressing seat 72 to move downward, which, together with the placement seat 42, can seal the top of the valve body casting 5. The transparent protective cover 74 can shield the detection position to prevent water leakage and splashing during detection. The operation of the pressurized water pump 91 can deliver water from the water tank 1 to the valve body casting 5 through the hose 92. When there is a problem with the sealing, water will leak, and the pressure sensor will also detect it.

[0038] During the testing process, the rotation of the second motor 75 can drive the pressing seat 72 to rotate through the gear 76 and the gear ring 77, which in turn can drive the valve body casting 5 to rotate, making it convenient to observe the valve body casting 5 comprehensively and improving its practicality.

[0039] After the test is completed, any excess water will automatically fall into water tank 2 and can then be used for the next test.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0041] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A casting airtightness testing device, comprising a water tank (1) with an open top, characterized in that: The top of the water tank (1) is fixedly connected to a bracket (2), a conveying mechanism (3) is installed inside the bracket (2), a plurality of lower sealing mechanisms (4) are installed on the conveying mechanism (3), a valve body casting (5) is placed on the lower sealing mechanism (4), a cylinder (6) is installed on the top of the bracket (2), an upper sealing mechanism (7) is fixedly connected to the bottom end of the cylinder (6), a controller (8) is installed on the front side of the bracket (2), and a pressurizing mechanism (9) that cooperates with the upper sealing mechanism (7) is provided on one side of the water tank (1). The conveying mechanism (3) includes conveying rollers (31) symmetrically rotatably connected to both sides inside the bracket (2), and two synchronous belts (32) symmetrically sleeved between the two conveying rollers (31). A first motor (33) for driving the conveying rollers (31) to rotate is installed on one side of the bracket (2). The lower sealing mechanism (4) includes a base plate (41) fixedly connected between two synchronous belts (32). The top of the base plate (41) is rotatably connected to a placement seat (42) via a bearing. The placement seat (42) has a first sealing gasket (43) embedded inside for sealing the bottom of the valve body casting (5). The inner wall of the bracket (2) is symmetrically fixedly connected to two support plates (21) that are in contact with the bottom of the base plate (41).

2. The casting airtightness testing equipment according to claim 1, characterized in that: The upper surface of the base plate (41) has two symmetrical sliding grooves, and a two-way lead screw (44) is rotatably connected between the two sliding grooves. The outer surface of the two-way lead screw (44) is symmetrically threaded with two movable rods (45) that are slidably connected to the inside of the sliding groove. One end of the movable rod (45) is fixedly connected with a spring telescopic rod (46), and one end of the spring telescopic rod (46) is fixedly connected with an arc plate (47). The outer surface of the arc plate (47) is embedded with a ball bearing (48) that is rotatably connected.

3. The casting airtightness testing equipment according to claim 1, characterized in that: The upper sealing mechanism (7) includes a top plate (71) fixedly connected to the bottom of the cylinder (6). The bottom of the top plate (71) is rotatably connected to a pressing seat (72). The bottom of the pressing seat (72) is embedded with a second sealing gasket (73) on the top of the sealing valve body casting (5). A transparent protective cover (74) is fixedly connected to the outer surface of the top plate (71). An electromagnetic exhaust valve is installed on the top of the top plate (71) near the center.

4. The casting airtightness testing equipment according to claim 3, characterized in that: A second motor (75) is mounted on the outer surface of the top plate (71), and a gear (76) is fixedly connected to the output shaft of the second motor (75). A gear ring (77) that meshes with the gear (76) is fixedly connected to the outer surface of the pressing seat (72).

5. The casting airtightness testing equipment according to claim 3, characterized in that: The pressurizing mechanism (9) includes a pressurizing water pump (91) installed on one side of the water tank (1). The input end of the pressurizing water pump (91) is connected to the water tank (1). The output end of the pressurizing water pump (91) is fixedly connected to a hose (92). One end of the hose (92) is fixedly installed on the top of the top plate (71) and connected to the inside of the pressing seat (72). A pressure sensor is fixedly installed on one side of the hose (92).

6. The casting airtightness testing equipment according to claim 1, characterized in that: The bracket (2) has a transparent through window on one side.

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