Rapid air tightness detection device for needle valve rod

Abstract

The utility model discloses a quick air tightness detection device for a needle valve rod, which comprises a device main body provided with a cylinder transmission device, a gas input device and a to-be-detected part placement base, the air cylinder transmission device is located on one side of the device body. The gas input device is positioned on the other side of the device main body; the cylinder transmission device is connected with the gas input device; and the to-be-detected part placing base is located right below the gas input device. The device is simple in structure and convenient to operate, the air tightness of a product can be detected in a short time through the cooperation of the air cylinder transmission device and the gas input device, and the production efficiency is greatly improved; the air cylinder pressurizes to enable the gas input device to move downwards and drive the opponent piece fixed in the gas input device to be in close contact with the part on the to-be-detected part placing base, accurate contact of the part is completed in a mechanical automation mode, and the detection accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air tightness detection, in particular to a rapid air tightness detection device, which is especially used for air tightness detection of a needle valve stem. Background Art

[0002] With the development of industrial production, air tightness testing plays an important role in the production process of various products. Common inspection methods include air thermal expansion and contraction method, heating method, liquid coating method, water injection method, and air blowing method.

[0003] However, existing airtightness testing devices still have certain shortcomings in terms of testing speed, accuracy, and ease of operation. Existing testing methods have the following problems: manual operation requires manual clamping, resulting in slow testing speed and low efficiency; manual clamping also easily causes straightness problems, resulting in low accuracy. Utility Model Content

[0004] The purpose of the utility model is to provide a rapid air tightness detection device for a needle valve stem, which is convenient to operate, highly efficient and can ensure accuracy.

[0005] In order to solve the above technical problems, a technical solution adopted by the present invention is:

[0006] A rapid air tightness detection device for a needle valve stem comprises: a device body, on which a cylinder transmission device, a gas input device, and a base for placing a part to be detected are installed;

[0007] The cylinder transmission device is located on one side of the device body;

[0008] The gas input device is located on the other side of the device body;

[0009] The cylinder transmission device is connected to the gas input device;

[0010] The base for placing the part to be inspected is located directly below the gas input device.

[0011] Preferably, the device body includes a supporting vertical plate, a reinforcing plate, and a base, the supporting vertical plate is located on the base, and the reinforcing plate is located on one side of the supporting vertical plate.

[0012] Preferably, the cylinder transmission device comprises a cylinder and a sensor, the upper portion of the cylinder is connected to a sliding plate via threads, and the cylinder is connected to the gas input device via the sliding plate;

[0013] The sensor is located behind the cylinder.

[0014] Preferably, a sliding groove is provided on the sliding plate, and the supporting vertical plate is installed in the sliding groove.

[0015] Preferably, a travel stop block is provided on the support vertical plate.

[0016] Preferably, a slider is provided on the gas input device, and a slide rail is provided on the supporting vertical plate, and the cylinder input device is moved up and down by the slider and the slide rail.

[0017] Preferably, a gas tank is provided below the base for placing the part to be inspected.

[0018] The beneficial effects of the utility model are:

[0019] (1) The utility model provides a rapid air tightness detection device for needle valve stems, which has a simple structure and is more convenient to operate. By setting up a cylinder transmission device and a gas input device, the air tightness detection of the product can be completed in a short time, which greatly improves the production efficiency. The degree of manual participation is low, and only the last step of replacing the parts product is involved.

[0020] (2) The utility model provides a rapid air tightness detection device for a needle valve stem. The base for placing the part to be detected is located directly below the gas input device. By pressurizing the cylinder, the gas input device moves downward and drives the counterpart fixed in the gas input device to make close contact with the part on the base for placing the part to be detected. The precise contact of the parts is completed in a mechanical and automated manner, thereby improving the accuracy of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of a rapid air tightness detection device for a needle valve stem of the utility model;

[0022] Figure 2 1 is a schematic diagram of the rapid air tightness detection device from another angle;

[0023] Figure 3 1 is a schematic diagram of the rapid air tightness detection device from another angle;

[0024] The markings of the components in the accompanying drawings are as follows:

[0025] 1. Cylinder transmission device; 1-1. Cylinder; 2. Gas input device; 2-1. Slider; 3. Base for placing parts to be tested; 4. Support vertical plate; 4-1. Slide rail; 5. Reinforcement plate; 6. Base; 7. Sliding plate; 7-1. Slide groove; 8. Travel stop block; 9. Gas tank. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more precise definition of the protection scope of the present invention.

[0027] Example:

[0028] This embodiment introduces the structure of a rapid air tightness detection device for a needle valve stem.

[0029] like Figure 1 As shown, Figure 1 This is a schematic diagram of the three-dimensional structure of a rapid air tightness detection device for a needle valve stem of the utility model. A rapid air tightness detection device for a needle valve stem comprises: a device body, on which a cylinder transmission device 1, a gas input device 2, and a base 3 for placing the part to be detected are installed;

[0030] The cylinder transmission device 1 is located on one side of the device body;

[0031] The gas input device 2 is located on the other side of the device body;

[0032] The cylinder transmission device 1 is connected to the gas input device 2;

[0033] The base 3 for placing the parts to be inspected is located directly below the gas input device 2;

[0034] like Figure 2 、 3 As shown, Figure 2 This is a schematic diagram of the rapid air tightness detection device from another angle. Figure 3 1 is a schematic diagram of the rapid airtightness detection device from another angle. The device body comprises a support vertical plate 4, a reinforcement plate 5, and a base 6. The support vertical plate 4 is located on the base 6, and the reinforcement plate 5 is located on one side of the support vertical plate 4.

[0035] Furthermore, the cylinder transmission device 1 includes a cylinder 1-1 and a sensor. The upper portion of the cylinder 1-1 is connected to a sliding plate 7 by a thread, and the cylinder 1-1 is connected to the gas input device 2 through the sliding plate 7.

[0036] The sensor is located behind the cylinder 1-1 and is used to detect the end points of the cylinder's upper and lower strokes.

[0037] Furthermore, a sliding groove 7 - 1 is provided on the sliding plate 7 , and the supporting vertical plate 4 is installed in the sliding groove 7 - 1 .

[0038] Furthermore, a slider 2 - 1 is provided on the gas input device 2 , and a slide rail 4 - 1 is provided on the support vertical plate 4 , so that the gas input device 2 can be moved up and down by the slider 2 - 1 and the slide rail 4 - 1 .

[0039] The working principle of the detection device can be understood as follows: when the upper part of the cylinder 1-1 is inflated, the deflating and compression stroke of the lower part of the cylinder 1-1 drives the gas input device 2 to move downward through the slide rail 4-1, and the movement of the slide rail 4-1 is stopped at the end point set by the sensor. The gas input device 2 stores air and maintains a certain air pressure for a period of time to perform air leakage detection. After the detection is completed, the upper part of the cylinder is deflated and the lower part is inflated, and the release stroke moves the gas input device 2 upward through the slide rail 4-1 back to its original position.

[0040] In this embodiment, the gas input device has two functions: fixing the counterpart and detecting the air leakage of the component by cooperating with the counterpart and the component; storing air at a certain pressure and maintaining it for a period of time to complete leakage detection.

[0041] Furthermore, a travel stop block 8 is provided on the support vertical plate 4, and the travel stop block can stop the sliding plate during the operation of the cylinder transmission device and the gas input device, thereby controlling the operating stroke distance.

[0042] In this embodiment, the test part placement base 3 is used to place the part and ensure that it accurately fits the counterpart. Because the gas input device 2 applies downward pressure, a gas tank is added to the test part placement base 3 to provide cushioning and support to prevent damage to the device.

[0043] This device adopts a highly efficient inflation and exhaust system, which can complete product testing in a short time and improve production efficiency.

[0044] Example 2

[0045] Based on Example 1, this example briefly describes the operation and use of the airtightness detection device.

[0046] In this embodiment, the air tightness detection device is installed on a workbench, and is equipped with an operation key for starting the operation of the air tightness detection device, a display screen connected to the air tightness detection device, and a reset key.

[0047] Place the part to be tested on the testing machine's part placement base 3, turn on the run button, and the cylinder will inflate. As the cylinder moves downward, the gas input device moves downward, causing the counterpart fixed in the gas input device to come into close contact with the part on the part placement base, and leak detection begins. When the leak test begins, the indicator light on the display turns yellow. When the leak test is complete, if the indicator light turns green, the test result is good. The cylinder will then automatically return to its original position, and the tested product will be manually removed and placed on the shelf. The next part will then be placed for the next test cycle. If the indicator light turns red when the leak test is complete, the test result is bad, an alarm will appear on the display, and the cylinder will not automatically move upward. The alarm must be manually cleared by pressing the reset button before the cylinder can automatically move upward. The unqualified parts will then be manually placed in the scrap box, and a new part to be tested will be placed to enter the next test cycle.

[0048] It adopts a one-button operation mode, which is simple and easy to operate. Manual intervention is only required when replacing parts at the end, which greatly improves the inspection efficiency and is suitable for application in large-scale production lines.

[0049] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A rapid air tightness detection device for a needle valve stem, characterized in that: include: A device body, on which a cylinder transmission device (1), a gas input device (2), and a base (3) for placing parts to be tested are installed; The cylinder transmission device (1) is located on one side of the device body; The gas input device (2) is located on the other side of the device body; The cylinder transmission device (1) is connected to the gas input device (2); The base (3) for placing the part to be inspected is located directly below the gas input device (2).

2. A rapid air tightness detection device for a needle valve stem according to claim 1, characterized in that: The device body comprises a supporting vertical plate (4), a reinforcing plate (5), and a base (6); the supporting vertical plate (4) is located above the base (6), and the reinforcing plate (5) is located on one side of the supporting vertical plate (4).

3. The rapid air tightness detection device for a needle valve stem according to claim 2, characterized in that: The cylinder transmission device (1) comprises a cylinder (1-1) and a sensor. The upper portion of the cylinder (1-1) is connected to a sliding plate (7) via a thread, and the cylinder (1-1) is connected to the gas input device (2) via the sliding plate (7). The sensor is located behind the cylinder (1-1).

4. A rapid air tightness detection device for a needle valve stem according to claim 3, characterized in that: A sliding groove (7-1) is provided on the sliding plate (7), and the supporting vertical plate (4) is installed in the sliding groove (7-1).

5. The rapid air tightness detection device for a needle valve stem according to claim 2, characterized in that: A travel stop block (8) is provided on the supporting vertical plate (4).

6. The rapid air tightness detection device for a needle valve stem according to claim 2, characterized in that: A slider (2-1) is provided on the gas input device (2), and a slide rail (4-1) is provided on the support vertical plate (4); the gas input device (2) is moved up and down by the slider (2-1) and the slide rail (4-1).

7. The rapid air tightness detection device for a needle valve stem according to claim 1, characterized in that: A gas tank (9) is provided below the base (3) for placing the part to be inspected.

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