Air tightness detection device for valve casting

Abstract

The utility model relates to the technical field of valve casting detection equipment, and discloses a valve casting air tightness detection device, which comprises a detection case, an elevator main body is fixedly connected to the outer wall of one side of the detection case, and a detection mechanism is arranged on the elevator main body. Valve castings of different specifications are conveniently clamped, fixed and detected and conveniently separated and replaced through the detection mechanism, an auxiliary mechanism is arranged on the detection mechanism, leakage and convenient separation of the butt joint positions except for the detected castings are prevented through the auxiliary mechanism, and the detection mechanism comprises a sliding frame. The sliding frame is fixedly connected to the output end of the elevator body, and the inner wall of one side of the sliding frame is rotationally connected with a worm through a bearing. According to the utility model, the adjusting disc, the adjusting plate and other structures are arranged, so that the problem that the detection, installation and replacement are complicated and tedious due to the fact that bolts are fixed at two ends of the valve casting by the flange plate and a plurality of bolts need to be disassembled after the test is completed is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of valve casting detection equipment, in particular to an air tightness detection device for valve castings. Background Technique

[0002] At present, after the valve casting is processed, it is necessary to detect the air tightness of the valve casting. The operator needs to seal the liquid outlet of the valve casting through a sealing plug, and then press air into the liquid inlet of the valve casting. At the same time, the valve casting is immersed in water to observe whether there are bubbles generated. If there are no bubbles, it means that the air tightness of the casting is good.

[0003] After retrieval, the Chinese patent publication number: CN217237105U discloses an air tightness detection device for valve castings, which relates to the technical field of valve casting detection equipment, including a water storage tank with an open structure. A clamping component is fixedly installed at the inner bottom end of the water storage tank, and a detection component is fixedly connected inside the water storage tank. The detection component includes a valve casting. A first flange is connected to the outside of the liquid inlet of the valve casting, and a second flange is connected to the outside of the liquid outlet of the valve casting. The free end side of the first flange is fixedly connected with an air inlet pipe. Through a plurality of sets of fastening bolts, the liquid inlet and liquid outlet of the valve casting are respectively fixedly connected with the first flange and the second flange, so that an air path transmission path is jointly formed by the air inlet pipe, the first flange, the valve casting, the second flange and the air outlet pipe.

[0004] The above device has the following defects. The two ends of the valve casting are fixed by bolts through the flange. After the test, it is necessary to disassemble a plurality of bolts, making its detection, installation and replacement relatively complicated and cumbersome, which leads to the problem of unsatisfactory subsequent valve detection efficiency. Therefore, an air tightness detection device for valve castings is proposed to solve the above problems. Content of the Utility Model

[0005] In order to make up for the above deficiencies, the utility model provides an air tightness detection device for valve castings, aiming to improve the problem that the detection, installation and replacement in the prior art are relatively complicated and cumbersome, which leads to unsatisfactory subsequent valve detection efficiency.

[0006] To achieve the above object, the utility model adopts the following technical solutions: An airtightness detection device for a valve casting, including a detection chassis, one outer wall of the detection chassis is fixedly connected with a lift main body, and a detection mechanism is arranged on the lift main body. By setting the detection mechanism, valve castings of different specifications can be conveniently clamped, fixed, detected, and conveniently separated and replaced. An auxiliary mechanism is arranged on the detection mechanism. By setting the auxiliary mechanism, leakage at the joints other than the detected castings can be prevented and convenient separation can be achieved. The detection mechanism includes a sliding frame, the sliding frame is fixedly connected to the output end of the lift main body, one inner wall of the sliding frame is rotatably connected with a worm through a bearing, a worm gear is meshed with the worm, an inner ring of the worm gear is fixedly connected with a bidirectional threaded rod, an adjusting plate is threadedly connected to the bidirectional threaded rod, a liquid injection pipe is slidably connected to a side inner wall of the adjusting plate, and a valve casting main body is clamped to an outer wall of the side of the liquid injection pipe.

[0007] As a further description of the above technical solution: The auxiliary mechanism includes a spring damper, the spring damper is fixedly connected to an outer wall of one side of the sealing disc, a threaded groove is opened on a side inner wall of the liquid injection pipe, a movable cylinder is threadedly connected to a side inner wall of the threaded groove, and an access pipe is rotatably connected to an outer wall of the side of the movable cylinder through a bearing.

[0008] As a further description of the above technical solution: The worm penetrates through the top inner wall of the sliding frame and extends to the top outer wall of the sliding frame, and one end of the worm away from the sliding frame is fixedly connected with an adjusting disc.

[0009] As a further description of the above technical solution: There are two adjusting plates in total, the two adjusting plates are respectively symmetrical, and the two adjusting plates are respectively threadedly connected to the bidirectional threaded rod.

[0010] As a further description of the above technical solution: The outer wall of the side of the liquid injection pipe is rotatably connected with a sealing disc through a bearing, and the valve casting main body is clamped to an outer wall of one side of the sealing disc.

[0011] As a further description of the above technical solution: One end of the spring damper away from the sealing disc is clamped to an outer wall of one side of the adjusting plate. There are several spring dampers in total, and several spring dampers are respectively fixedly connected to an outer wall of one side of the sealing disc.

[0012] As a further description of the above technical solution: A frosted groove is opened on an outer wall of the side of the movable cylinder.

[0013] As a further description of the above technical solution: One outer wall of the detection chassis (1) is fixedly connected with a water injection port (2), and one front outer wall of the detection chassis (1) is fixedly connected with a control panel (3).

[0014] The utility model has the following beneficial effects:

[0015] 1. In the present utility model, by providing structures such as an adjustment disc, an adjustment plate, and a sealing disc, the valve castings of different specifications can be conveniently fixed and separated for auxiliary detection, improving the problem that the flange is used to fix the two ends of the valve casting with bolts, and after testing, multiple bolts need to be disassembled, making the detection, installation, and replacement complex and cumbersome.

[0016] 2. In the present utility model, by providing structures such as a threaded groove, a movable cylinder, and an inlet / outlet pipe, the auxiliary detection mechanism continuously applies a thrust seal to the two ends of the valve casting, improving the problem that when detecting the seal in water, the butt joint at the two ends of the valve casting is not in place in contact with the sealing disc, easily resulting in leakage and affecting the airtightness detection accuracy of the valve casting. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic front view of the overall airtightness detection device for a valve casting proposed by the present utility model;

[0018] Figure 2 It is a schematic side view of the overall airtightness detection device for a valve casting proposed by the present utility model;

[0019] Figure 3 It is a schematic diagram of the detection mechanism of the airtightness detection device for a valve casting proposed by the present utility model;

[0020] Figure 4 It is a schematic diagram of the auxiliary mechanism of the airtightness detection device for a valve casting proposed by the present utility model.

[0021] LEGEND DESCRIPTION:

[0022] 1. Detection chassis; 2. Water injection port; 3. Control panel; 4. Main body of the elevator; 5. Detection mechanism; 51. Sliding frame; 52. Worm; 53. Adjustment disc; 54. Worm gear; 55. Bidirectional threaded rod; 56. Adjustment plate; 57. Liquid injection pipe; 58. Sealing disc; 59. Main body of the valve casting; 6. Auxiliary mechanism; 61. Spring damper; 62. Threaded groove; 63. Movable cylinder; 64. Frosted groove; 65. Inlet / outlet pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Refer to Figures 1 - 3The utility model provides an embodiment: a valve casting air tightness detection device, including a detection box 1, a lift body 4 is fixedly connected to one side outer wall of the detection box 1, and a detection mechanism 5 is arranged on the lift body 4. By setting the detection mechanism 5, valve castings of different specifications can be conveniently clamped and fixed for detection, and conveniently separated and replaced. An auxiliary mechanism 6 is arranged on the detection mechanism 5. By setting the auxiliary mechanism 6, leakage at the joint outside the detection casting is prevented and convenient separation is achieved. The detection mechanism 5 includes a sliding frame 51, which is fixedly connected to the output end of the lift body 4. The sliding frame 5 The inner wall of one side of 1 is rotatably connected with a worm 52 through a bearing. The worm 52 and the worm wheel 54 are arranged to cooperate with each other. When the worm 52 is not rotating, the worm wheel 54 has a certain self-locking property to prevent the bidirectional threaded rod 55 from rotating. The worm 52 is meshingly connected with the worm wheel 54. The inner ring of the worm wheel 54 is fixedly connected with the bidirectional threaded rod 55. The bidirectional threaded rod 55 is arranged to drive two adjustment plates 56 to expand and close with each other. The bidirectional threaded rod 55 is threadedly connected with the adjustment plate 56. The inner wall of the side of the adjustment plate 56 is slidably connected with an injection pipe 57. The outer wall of the side of the injection pipe 57 is clamped with a valve casting body 59.

[0025] Reference Figures 2 - 3 The worm 52 passes through the top inner wall of the sliding frame 51 and extends to the top outer wall of the sliding frame 51. The end of the worm 52 away from the sliding frame 51 is fixedly connected to the adjusting disk 53. There are two adjusting plates 56. The two adjusting plates 56 are symmetrical. The two adjusting plates 56 are respectively threadedly connected to the bidirectional threaded rod 55. The side outer wall of the injection pipe 57 is rotatably connected with a sealing disk 58 through a bearing. The sealing disk 58 is provided to reduce the docking gap between the injection pipe 57 and the valve casting body 59, and improve the sealing performance to a certain extent. The valve casting body 59 is clamped on the outer wall of one side of the sealing disk 58. A water injection port 2 is fixedly connected to the outer wall of one side of the detection chassis 1. Water is injected into the interior of the detection chassis 1 by providing the water injection port 2. The front outer wall of the detection chassis 1 is fixedly connected to the control panel 3.

[0026] Reference Figures 3 - 4 The auxiliary mechanism 6 includes a spring damper 61, which is fixedly connected to the outer wall of one side of the sealing disk 58. A threaded groove 62 is provided on the inner wall of the side of the injection tube 57. The threaded groove 62 cooperates with the movable cylinder 63 to conveniently separate, replace and maintain the inlet and outlet pipes 65. The inner wall of the side of the threaded groove 62 is threadedly connected to the movable cylinder 63. The outer wall of the side of the movable cylinder 63 is rotatably connected to the inlet and outlet pipe 65 through a bearing. One end of the spring damper 61 away from the sealing disk 58 is clamped on the outer wall of one side of the adjustment plate 56. There are a number of spring dampers 61, which are respectively fixedly connected to the outer wall of one side of the sealing disk 58. The spring damper 61 is provided to generate a continuous thrust on the sealing disk 58. A frosted groove 64 is provided on the outer wall of the side of the movable cylinder 63.

[0027] Working principle: By placing the valve casting body 59 to be detected with different specifications against the corresponding liquid injection pipe 57, then rotating the adjustment disc 53 to make the worm 52 rotate. The rotation of the worm 52 drives the worm wheel 54 to rotate, the rotation of the worm wheel 54 drives the double-threaded rod 55 to rotate, the rotation of the double-threaded rod 55 drives the adjustment plate 56 to move, the movement of the adjustment plate 56 drives the spring damper 61 to move, and the movement of the spring damper 61 drives the sealing disc 58 to fit against the side outer wall of the valve casting body 59 for a certain seal to prevent leakage at the docking place. Then, the elevator body 4 is started and immersed into the detection chassis 1 to observe whether the air tightness of the valve casting body 59 is qualified. At the same time, under long-term use, by rotating the movable cylinder 63 to separate it from the thread groove 62, the inlet and outlet pipe 65 is separated, and the damaged and aged hose can be conveniently replaced.

[0028] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An airtightness detection device for a valve casting, comprising a detection chassis (1), characterized in that: One side outer wall of the detection chassis (1) is fixedly connected with a lift main body (4), and a detection mechanism (5) is arranged on the lift main body (4). By arranging the detection mechanism (5), the valve castings of different specifications can be conveniently clamped, fixed and detected, and conveniently separated and replaced. An auxiliary mechanism (6) is arranged on the detection mechanism (5). By arranging the auxiliary mechanism (6), the leakage of the joints other than the detected castings can be prevented and the separation can be facilitated. The detection mechanism (5) includes a sliding frame (51), the sliding frame (51) is fixedly connected to the output end of the lift main body (4), one side inner wall of the sliding frame (51) is rotatably connected with a worm (52) through a bearing, a worm gear (54) is meshed with the worm (52), a bidirectional threaded rod (55) is fixedly connected to the inner ring of the worm gear (54), an adjusting plate (56) is threadedly connected to the bidirectional threaded rod (55), a liquid injection pipe (57) is slidably connected to the side inner wall of the adjusting plate (56), and a valve casting main body (59) is clamped on the side outer wall of the liquid injection pipe (57).

2. The airtightness detection device for a valve casting according to claim 1, wherein: The auxiliary mechanism (6) includes a spring damper (61), the spring damper (61) is fixedly connected to one side outer wall of the sealing disc (58), a threaded groove (62) is opened on the side inner wall of the liquid injection pipe (57), a movable cylinder (63) is threadedly connected to the side inner wall of the threaded groove (62), and an access pipe (65) is rotatably connected to the side outer wall of the movable cylinder (63) through a bearing.

3. The airtightness detection device for a valve casting according to claim 1, characterized in that: The worm (52) penetrates through the top inner wall of the sliding frame (51) and extends to the top outer wall of the sliding frame (51), and an adjusting disc (53) is fixedly connected to one end of the worm (52) away from the sliding frame (51).

4. The airtightness detection device for a valve casting according to claim 1, characterized in that: There are two adjusting plates (56), the two adjusting plates (56) are symmetrically arranged respectively, and the two adjusting plates (56) are respectively threadedly connected to the bidirectional threaded rod (55).

5. The airtightness detection device for a valve casting according to claim 1, characterized in that: The side outer wall of the liquid injection pipe (57) is rotatably connected with a sealing disc (58) through a bearing, and the valve casting main body (59) is clamped on one side outer wall of the sealing disc (58).

6. The airtightness detection device for a valve casting according to claim 2, characterized in that: One end of the spring damper (61) away from the sealing disc (58) is clamped on one side outer wall of the adjusting plate (56), and there are several spring dampers (61), and several spring dampers (61) are respectively fixedly connected to one side outer wall of the sealing disc (58).

7. An airtightness detection device for a valve casting according to claim 2, characterized in that: A frosted groove (64) is opened on the side outer wall of the movable cylinder (63).

8. The airtightness detection device for a valve casting according to claim 1, characterized in that: One side outer wall of the detection chassis (1) is fixedly connected with a water injection port (2), and the front side outer wall of the detection chassis (1) is fixedly connected with a control panel (3).

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