A device for detecting the sealing performance of a gas rack

Abstract

The utility model discloses a kind of gas frame sealing performance detection devices, including compressed air source, compressed air pipe is from the compressed air source, after filter, middle seal manual valve, pressure gauge, pressure protection switch and test connector connect the one end air passage of gas frame, the air passage of the other end of the gas frame is provided with gas frame plug, the pressure gauge is digital pressure gauge, the middle seal manual valve is provided with three gear positions, respectively: ventilation position, pressure maintaining position and air release position, middle seal manual valve is provided with handle, when handle is in ventilation position, gas frame is stored, when pressure reaches preset pressure, manually valve is adjusted to pressure maintaining position and carries out pressure maintaining test, through pressure gauge pressure value reading, to judge whether gas frame sealing meets requirements accordingly.The utility model detection device structure is simple, and gas frame that has passed detection is provided to customer, ensure that product sealing quality meets requirements, when operating personnel detect gas frame sealing performance, test connector and gas frame main channel are conveniently plugged, and test efficiency is high.

Description

Technical Field

[0001] This utility model belongs to the field of factory testing technology for air frames in textile machinery, and particularly relates to a device for testing the sealing performance of air frames. Background Technology

[0002] In textile mills, especially those using air-jet looms, compressed air is one of the primary power sources. Air frames, as key components for conveying compressed air, are particularly vulnerable to leaks. These leaks are often small and hidden, difficult to detect with the naked eye, but their accumulation can lead to significant energy waste. Existing air frame sealing performance testing devices are often complex in structure, making them inconvenient for on-site personnel. Utility Model Content

[0003] To address the above problems, this utility model provides a device for testing the sealing performance of an air frame.

[0004] This utility model is implemented as follows: A gas frame sealing performance testing device includes a compressed air source, wherein the compressed air pressure provided by the compressed air source is not less than 0.6MPa, the compressed air source is connected to a compressed air pipe, the compressed air pipe is connected from the compressed air source, through a filter, a central sealing manual valve, a pressure gauge, a pressure protection switch and a test connector to one end of the air passage of the gas frame, the other end of the air passage of the gas frame is provided with a gas frame plug, and the pressure gauge is a digital display pressure gauge, which is convenient for operators to observe and read the pressure in the device during testing.

[0005] The filter described above filters the compressed gas entering the detection device to remove impurities from the compressed gas, thereby protecting subsequent components.

[0006] The aforementioned manual valve controls the on / off of the air circuit and has three positions: venting, pressure holding, and venting. The manual valve has a handle. When the handle is in the venting position, air is stored in the air frame. Once the preset pressure is reached, the manual valve is switched to the pressure holding position for a pressure holding test. The pressure reading on the pressure gauge is used to determine whether the air frame seal meets the requirements. If there is no leakage in the air frame, its internal pressure should remain stable; if there is a leak, the internal pressure of the air frame will gradually decrease. The air frame's sealing performance can be detected by observing changes in the pressure gauge reading and the signal from the pressure protection switch. If the compressed air supplied by the compressed air source is 0.6 MPa, and the pressure holding time during the test is 30 seconds, a pressure drop of no more than 0.005 MPa indicates that the air frame's sealing performance is qualified.

[0007] The pressure protection switch automatically opens when the pressure in the gas circuit reaches or exceeds the set threshold to protect the gas circuit.

[0008] The test connector includes an O-ring, an expansion sleeve, and an expansion sleeve vent. During the air frame sealing performance test, the end of the test connector with the O-ring, expansion sleeve, and expansion sleeve vent is inserted into the main air passage of the air frame. When compressed air is introduced during the test, the compressed air acts on the expansion sleeve through the expansion sleeve vent, causing the expansion sleeve to fit tightly against the inner wall of the main air passage of the air frame, making the seal tighter. The O-ring at the interface improves the sealing performance and prevents gas leakage.

[0009] This utility model testing device has a simple structure, stable and reliable testing, and provides a safety guarantee for stable product quality. When testing the sealing performance of the air frame, the test connector is easy to plug and unplug from the main channel of the air frame, resulting in high testing efficiency, good sealing performance, and reliable test results. The digital pressure gauge makes it convenient for operators to observe the readings. When equipped with a filter and pressure protection switch, the testing device is durable and safe. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the gas path structure of this utility model; Figure 2 This is a schematic diagram of the connection structure between the test connector and the air frame of this utility model; Figure 3 This is a schematic cross-sectional view of the connection between the test connector and the air frame of this utility model; Figure 4 This is a schematic diagram of the air frame structure of this utility model; In the diagram: 1-Filter, 2-Center-sealed manual valve, 3-Digital pressure gauge, 4-Pressure protection switch, 5-Air frame, 6-Test connector, 601-O-ring, 602-Expansion sleeve, 603-Expansion sleeve vent, 7-Air frame plug, 8-Pipe gripper, 801-Pipe gripper piston, 802-Pipe gripper air cushion, 9-Air frame profile, 901-Air passage, 902-Air outlet. Detailed Implementation

[0011] To better understand the technical solution of this utility model, the following description, in conjunction with the accompanying drawings, further illustrates this utility model.

[0012] like Figure 1-3 The device for testing the sealing performance of an air frame includes a compressed air source. The compressed air source provides compressed air with a pressure of not less than 0.6 MPa. The compressed air source is connected to a compressed air pipe. The compressed air pipe is connected from the compressed air source, through a filter 1, a central sealing manual valve 2, a pressure gauge 3, a pressure protection switch 4, and a test connector 6 to one end of the air passage of an air frame 5. An air frame plug 7 is provided at the other end of the air passage of the air frame 5.

[0013] The air frame structure described above is as follows Figure 4As shown, the air frame includes an air frame profile 9 and a tube gripper 8. The air frame profile 9 includes an air passage 901 and an air outlet 902. The tube gripper includes a tube gripper piston 801 and a tube gripper air cushion 802. The air frame 5 mentioned in this utility model refers to a finished component that can be directly delivered to a textile machinery company after the air frame profile 9 and the tube gripper 8 are assembled. The air frame sealing performance test mainly simulates the situation when the air frame is in use. Compressed air flows from the main air passage 901 of the air frame profile 9 to the air outlet 902, and then to the tube gripper 8, pushing the tube gripper piston 802 to grip the yarn tube. The sealing performance between the tube gripper air cushion 802 and the air outlet 902 after the air frame profile 9 and the tube gripper 8 are assembled needs to be checked and guaranteed. This is the main problem that this utility model aims to solve.

[0014] The pressure gauge is a digital display pressure gauge 3, which facilitates the operator's observation and reading of the pressure within the device during testing. The central sealing manual valve 2 manually controls the opening and closing of the air circuit and has three positions: venting, pressure holding, and venting. The central sealing manual valve 2 has a handle. When the handle is in the venting position, air is stored in the air frame. Once the pressure reaches the preset pressure, the manual valve is adjusted to the pressure holding position for a pressure holding test. The pressure reading on the pressure gauge is used to determine whether the air frame seal meets the requirements. In this embodiment, the compressed air source provides compressed air at a pressure of 0.6 MPa. During the test, the pressure holding time is 30 seconds, and the pressure drop does not exceed 0.005 MPa, indicating that the air frame seal is qualified.

[0015] like Figure 3 As shown, the test connector 6 includes an O-ring 601, an expansion sleeve 602, and an expansion sleeve vent 603. The structure of the air frame plug 7 at the sealing point with the air frame 5 is the same as that of the test connector 6. The difference between the test connector 6 and the test connector 6 is that one end of the air frame plug 7 is blocked.

[0016] This utility model testing device has a simple structure and can reliably and stably test the air frame, ensuring that customers receive qualified products.

[0017] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A device for testing the sealing performance of an air frame, comprising a compressed air source, characterized in that, The compressed air hose connects to one end of the air frame via a compressed air source, a filter, a central sealing manual valve, a pressure gauge, a pressure protection switch, and a test connector. The other end of the air frame is fitted with an air frame plug. The pressure gauge is a digital display pressure gauge. The central sealing manual valve has three positions: venting, pressure holding, and venting. The manual valve has a handle. When the handle is in the venting position, air is stored in the air frame. Once the pressure reaches the preset pressure, the manual valve is switched to the pressure holding position for a pressure holding test. The pressure reading on the pressure gauge is used to determine whether the air frame seal meets the requirements.

2. The air frame sealing performance testing device according to claim 1, characterized in that, The test connector includes an O-ring, an expansion sleeve, and an expansion sleeve vent.

3. The air frame sealing performance testing device according to claim 1, characterized in that, The compressed air pressure provided by the compressed air source is not less than 0.6 MPa.

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