A vacuum leak detection device for welds

Abstract

The utility model discloses a kind of welding seam vacuum leak detection devices, it is related to welding seam leak detection technical field, including shell, the bottom of shell is fixedly connected with bottom plate, the inside of shell is provided with marking mechanism, marking mechanism includes liquid storage tank, liquid storage tank is arranged in the inside of shell, the bottom of liquid storage tank is fixedly connected with several flow guide pipes, flow guide pipe is connected with the inside of liquid storage tank, fixedly connected with fixed rod on flow guide pipe. Advantage lies in: the vortex fan rotation of the device can drive connecting shaft rotation, connecting shaft rotation can drive special-shaped block rotation, while the crescent gap opened on the special-shaped block rotation can store a part of color developing liquid in liquid storage tank, as the gap that has stored color developing liquid is downward when continuously rotating, color developing liquid can drop to workpiece, while another crescent gap can also repeat this process, to mark the position of welding seam that exists continuously dropping color developing liquid, facilitate subsequent processing of welding seam, enhance work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of weld leak detection technology, and in particular to a weld vacuum leak detection device. Background Technology

[0002] Welding processes produce welds, and the integrity of these welds directly affects the strength and stability of the structure. Weld leak detection can promptly identify defects in the welds, such as porosity and cracks, preventing structural failures and leaks during use and ensuring the safety of equipment and personnel.

[0003] For example, patent document CN118999921A discloses a vacuum leak detection device for welds, including a vacuum hood with an opening at the bottom. A pump body for evacuating the vacuum hood is installed at the top of the vacuum hood. A pressure gauge for detecting the internal air pressure of the vacuum hood is installed on the side wall of the vacuum hood. A first sealing block is provided on the surface of the bottom opening of the vacuum hood. Two rods are symmetrically arranged on the outer side wall of the vacuum hood. A vertically arranged threaded sleeve is fixedly connected to the end of the rod away from the vacuum hood. The threaded sleeve passes through in the vertical direction and is rotatably connected to a first threaded rod. The bottom end of the first threaded rod is rotatably disposed in a threaded hole opened at the top of the second rod. A support plate for supporting the plate A to be tested is fixedly connected to the bottom end of the second rod. The first sealing block is squeezed by the vacuum hood to improve the sealing effect at the connection between the vacuum hood and the plate A to be tested.

[0004] However, after detecting the presence of a weld on the workpiece, the device cannot pinpoint the location of the weld, which may require further detection methods, resulting in low work efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a vacuum leak detection device for welds in order to solve the above-mentioned problems.

[0006] This utility model achieves the above objectives through the following technical solutions:

[0007] A vacuum leak detection device for welds includes a housing, a base plate fixedly connected to the bottom of the housing, a marking mechanism inside the housing, and a liquid storage tank inside the housing. Several guide pipes are fixedly connected to the bottom of the liquid storage tank, communicating with the interior of the liquid storage tank. A fixed rod is fixedly connected to each guide pipe, and a liquid outlet pipe is fixedly connected to the bottom of the fixed rod. A rotating mechanism, including a turbine fan, is rotatably connected to the fixed rod. A connecting shaft is fixedly connected to the side of the turbine fan near the guide pipe, and a shaped block is fixedly connected to the connecting shaft. The outer surface of the shaped block is rotatably connected to the inner surface of the fixed rod, and several crescent-shaped notches are formed on the shaped block. A sealing mechanism is provided at the bottom of the base plate, and an adjustment mechanism is provided on the sealing mechanism. A clamping mechanism is provided on both sides of the housing, and an observation mechanism is provided on one side of the housing. A vacuum pump is fixedly connected to the top of the housing, and a suction pipe is fixedly connected to the bottom of the vacuum pump.

[0008] Preferably, the marking mechanism includes several support rods, which are fixedly connected to both sides of the inner wall of the housing. The liquid storage tank is fixedly connected to the inner surface of the housing through several support rods, and a screw cap is threaded to the top of the liquid storage tank.

[0009] Preferably, the sealing mechanism includes an upper silicone pad, which is fixedly connected to the bottom of the base plate. A lower silicone pad is provided below the upper silicone pad, and a support plate is fixedly connected to the bottom of the lower silicone pad. A through hole is provided at the bottom of the support plate.

[0010] Preferably, the clamping mechanism includes two fixed blocks, which are fixedly connected to the front and rear sides of the support plate. An electric push rod is fixedly connected to the bottom of the fixed blocks, and a pressure plate is fixedly connected to the bottom of the electric push rod.

[0011] Preferably, the adjustment mechanism includes two threaded rods, the outer surface of which is threadedly connected to the base plate. The bottom of the threaded rods is provided with bevel teeth, and a bevel gear meshes with the bevel teeth at the bottom of the threaded rods. A rotating shaft is fixedly connected to the bevel gear, and a rocker arm is fixedly connected to one side of the rotating shaft. The rocker arm is rotatably connected to one side of the support plate, and several guide rods are fixedly connected to the support plate. The guide rods are slidably connected to the base plate.

[0012] Preferably, the observation mechanism includes a movable door, which is hinged to the side of the housing near the screw cap. An observation window is fixedly connected to the movable door, and a handle is fixedly connected to the movable door.

[0013] The beneficial effects are as follows: the rotation of the turbine fan of the device drives the connecting shaft to rotate, and the rotation of the connecting shaft drives the irregular block to rotate. While the irregular block is rotating, the crescent-shaped notch on it stores a portion of the color-developing liquid in the reservoir. As it continues to rotate, when the notch containing the color-developing liquid faces downward, the color-developing liquid will fall downward onto the workpiece. At the same time, the other crescent-shaped notches will repeat this process to continuously drip color-developing liquid to mark the location where there is a weld, which facilitates the subsequent processing of the weld and improves work efficiency.

[0014] The additional technical features and advantages of this utility model will become more apparent from the following description, or may be learned through specific practice of this utility model. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a three-dimensional first-view structural diagram of the weld vacuum leak detection device described in this utility model;

[0017] Figure 2 This is a three-dimensional second-view structural diagram of the weld vacuum leak detection device described in this utility model;

[0018] Figure 3 This is an internal three-dimensional sectional view of the weld vacuum leak detection device described in this utility model;

[0019] Figure 4 This is an internal front cross-sectional view of the weld vacuum leak detection device described in this utility model;

[0020] Figure 5 This utility model describes a vacuum leak detection device for weld seams. Figure 3 Enlarged view of point A in the middle;

[0021] Figure 6 This utility model describes a vacuum leak detection device for weld seams. Figure 4 Enlarged view at point B in the middle;

[0022] Figure 7 This utility model describes a vacuum leak detection device for weld seams. Figure 4 Enlarged view of point C.

[0023] The reference numerals in the attached drawings are explained as follows: 1. Shell; 2. Base plate; 301. Rocker arm; 302. Rotating shaft; 303. Bevel gear; 304. Threaded rod; 305. Guide rod; 401. Fixing block; 402. Electric push rod; 403. Pressure plate; 501. Upper silicone pad; 502. Lower silicone pad; 503. Support plate; 504. Through hole; 601. Support rod; 602. Liquid storage tank; 603. Guide tube; 604. Fixing rod; 605. Liquid outlet tube; 701. Turbine fan; 702. Connecting shaft; 703. Irregular block; 801. Movable door; 802. Observation window; 803. Handle; 9. Vacuum pump; 10. Evacuation pipe; 11. Screw cap. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] The present invention will be further described below with reference to the accompanying drawings:

[0027] like Figures 1-7As shown, a weld vacuum leak detection device includes a housing 1, a base plate 2 fixedly connected to the bottom of the housing 1, and a marking mechanism inside the housing 1. The marking mechanism includes a liquid storage tank 602, which is located inside the housing 1. Several guide pipes 603 are fixedly connected to the bottom of the liquid storage tank 602, and the guide pipes 603 communicate with the inside of the liquid storage tank 602. A fixing rod 604 is fixedly connected to the guide pipes 603, and an outlet pipe 605 is fixedly connected to the bottom of the fixing rod 604. A rotating mechanism is provided on the fixing rod 604, and the rotating mechanism includes a turbine fan 701, which is rotatably connected to the fixing rod 604. A connecting shaft 702 is fixedly connected to the side of the turbine fan 701 near the guide pipes 603, and a shaped block 703 is fixedly connected to the connecting shaft 702. The outer surface of the shaped block 703 is flush with the fixing rod 604. The inner surface of the rotating connection is provided. The irregular block 703 has several crescent-shaped notches. Each set of rotating mechanisms does not interfere with each other and operates independently. While the irregular block 703 rotates, the crescent-shaped notches on it will store a part of the color developing liquid in the liquid storage tank 602. As it continues to rotate, when the notch storing the color developing liquid faces downward, the color developing liquid will fall downward onto the workpiece. At the same time, the other crescent-shaped notches will repeat this process to mark the location where there is a weld by continuously dripping color developing liquid, which facilitates the subsequent processing of the weld and enhances work efficiency. The bottom of the base plate 2 is provided with a sealing mechanism, and the sealing mechanism is provided with an adjustment mechanism. Both sides of the housing 1 are provided with a pressing mechanism, and one side of the housing 1 is provided with an observation mechanism. The top of the housing 1 is fixedly connected to a vacuum pump 9, and the bottom of the vacuum pump 9 is fixedly connected to a suction pipe 10.

[0028] The marking mechanism includes several support rods 601, which are fixedly connected to both sides of the inner wall of the housing 1. The liquid storage tank 602 is fixedly connected to the inner surface of the housing 1 through several support rods 601. The top of the liquid storage tank 602 is threadedly connected to a cap 11. The liquid storage tank 602 stores color-developing liquid inside.

[0029] The sealing mechanism includes an upper silicone pad 501, which is fixedly connected to the bottom of the base plate 2. A lower silicone pad 502 is provided below the upper silicone pad 501. A support plate 503 is fixedly connected to the bottom of the lower silicone pad 502. A through hole 504 is provided at the bottom of the support plate 503, which allows the welding position of the workpiece to communicate with the external air.

[0030] The clamping mechanism includes two fixed blocks 401, which are fixedly connected to the front and rear sides of the support plate 503. An electric push rod 402 is fixedly connected to the bottom of the fixed block 401, and a pressure plate 403 is fixedly connected to the bottom of the electric push rod 402. When the electric push rod 402 is activated, the pressure plate 403 is controlled to descend. When the pressure plate 403 descends, it contacts the bottom plate 2 and applies pressure to compact the upper silicone pad 501 and the lower silicone pad 502 with the welding position of the workpiece, thus preventing gas leakage.

[0031] The adjustment mechanism includes two threaded rods 304. The outer surface of the threaded rods 304 is threadedly connected to the base plate 2. The bottom of the threaded rods 304 is provided with bevel teeth. A bevel gear 303 meshes with the bevel teeth at the bottom of the threaded rods 304. A rotating shaft 302 is fixedly connected to the bevel gear 303. A rocker arm 301 is fixedly connected to one side of the rotating shaft 302. The rocker arm 301 is rotatably connected to one side of the support plate 503. Several guide rods 305 are fixedly connected to the support plate 503. The guide rods 305 are slidably connected to the base plate 2. The rocker arm 301 drives the two bevel gears 303 to rotate through the rotating shaft 302. The rotation of the bevel gears 303 drives the threaded rods 304 to rotate, thereby adjusting the height of the housing 1 and the base plate 2.

[0032] The observation mechanism includes a movable door 801, which is hinged to the side of the housing 1 near the cap 11. An observation window 802 is fixedly connected to the movable door 801, and a handle 803 is fixedly connected to the movable door 801. By pulling the handle 803, the movable door 801 can be opened, making it convenient to add color-developing liquid into the liquid storage tank 602. The operator can also observe the working status inside the device through the observation window 802.

[0033] Working principle: When using this device, the operator first places the workpiece to be tested on the lower silicone pad 502, then rotates the rocker arm 301 to drive the two bevel gears 303 to rotate through the rotating shaft 302. The rotation of the bevel gears 303 drives the threaded rod 304 to rotate, thereby adjusting the height of the housing 1 and the base plate 2 until the bottom of the upper silicone pad 501 contacts and presses against the upper surface of the workpiece. Then, the electric push rod 402 is activated to control the pressure plate 403 to descend. The pressure plate 403 descends and contacts the base plate 2 to apply pressure, pressing the upper silicone pad 501 and the lower silicone pad 502 against the welding position of the workpiece to prevent gas leakage.

[0034] After the workpiece is fixed, the vacuum pump 9 is started to extract the air from the housing 1 until the housing 1 is in a vacuum state. When there is a weld at the welding position of the workpiece, the external air will leak into the housing 1 through the through hole 504 through the weld of the workpiece. Since there is a large difference between the air pressure inside the housing 1 and the external air pressure, the air leaking from the weld will generate a large flow velocity and blow the corresponding turbine fan 701, causing it to rotate. The rotation of the turbine fan 701 will drive the connecting shaft 702 to rotate, and the rotation of the connecting shaft 702 will drive the irregular block 703 to rotate. While the irregular block 703 is rotating, the crescent-shaped notch on it will store a part of the color developing liquid in the liquid storage tank 602. As it continues to rotate, when the notch storing the color developing liquid faces downward, the color developing liquid will fall downward onto the workpiece. At the same time, the other crescent-shaped notches will repeat this process to mark the position where there is a weld by continuously dripping color developing liquid, which facilitates the subsequent processing of the weld and improves work efficiency.

[0035] Pulling handle 803 opens the movable door 801, facilitating the addition of color-developing liquid to the storage tank 602. Operators can also observe the internal workings of the device through the observation window 802.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A vacuum leak detection device for welds, comprising a housing (1), characterized in that: A base plate (2) is fixedly connected to the bottom of the housing (1). A marking mechanism is provided inside the housing (1). The marking mechanism includes a liquid storage tank (602). The liquid storage tank (602) is located inside the housing (1). A plurality of guide pipes (603) are fixedly connected to the bottom of the liquid storage tank (602). The guide pipes (603) are connected to the inside of the liquid storage tank (602). A fixing rod (604) is fixedly connected to the guide pipe (603). A liquid outlet pipe (605) is fixedly connected to the bottom of the fixing rod (604). A rotating mechanism is provided on the fixing rod (604). The rotating mechanism includes a turbine fan (701). The turbine fan (701) is rotatably connected to the fixed rod. On the rod (604), a connecting shaft (702) is fixedly connected to the side of the turbofan (701) near the guide pipe (603). A shaped block (703) is fixedly connected to the connecting shaft (702). The outer surface of the shaped block (703) is rotatably connected to the inner surface of the fixed rod (604). Several crescent-shaped notches are opened on the shaped block (703). A sealing mechanism is provided at the bottom of the base plate (2). An adjustment mechanism is provided on the sealing mechanism. A pressing mechanism is provided on both sides of the housing (1). An observation mechanism is provided on one side of the housing (1). A vacuum pump (9) is fixedly connected to the top of the housing (1). A suction pipe (10) is fixedly connected to the bottom of the vacuum pump (9).

2. The vacuum leak detection device for welds according to claim 1, characterized in that: The marking mechanism includes several support rods (601), which are fixedly connected to both sides of the inner wall of the housing (1). The liquid storage tank (602) is fixedly connected to the inner surface of the housing (1) through several support rods (601). The top of the liquid storage tank (602) is threadedly connected to a cap (11).

3. The vacuum leak detection device for welds according to claim 1, characterized in that: The sealing mechanism includes an upper silicone pad (501), which is fixedly connected to the bottom of the base plate (2). A lower silicone pad (502) is provided below the upper silicone pad (501). A support plate (503) is fixedly connected to the bottom of the lower silicone pad (502). A through hole (504) is provided at the bottom of the support plate (503).

4. The vacuum leak detection device for welds according to claim 3, characterized in that: The clamping mechanism includes two fixing blocks (401), which are fixedly connected to the front and rear sides of the support plate (503). An electric push rod (402) is fixedly connected to the bottom of the fixing block (401), and a pressure plate (403) is fixedly connected to the bottom of the electric push rod (402).

5. A vacuum leak detection device for welds according to claim 3, characterized in that: The adjustment mechanism includes two threaded rods (304), the outer surface of which is threaded to the base plate (2). The bottom of the threaded rod (304) is provided with bevel teeth, and a bevel gear (303) meshes with the bevel teeth at the bottom of the threaded rod (304). A rotating shaft (302) is fixedly connected to the bevel gear (303). A rocker arm (301) is fixedly connected to one side of the rotating shaft (302). The rocker arm (301) is rotatably connected to one side of the support plate (503). Several guide rods (305) are fixedly connected to the support plate (503). The guide rods (305) are slidably connected to the base plate (2).

6. A vacuum leak detection device for welds according to claim 2, characterized in that: The observation mechanism includes a movable door (801), which is hinged to the housing (1) on the side near the screw cap (11). An observation window (802) is fixedly connected to the movable door (801), and a handle (803) is fixedly connected to the movable door (801).

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