Device for detecting sealing performance of disc ceramic membrane assembly

Abstract

The device for detecting the sealing performance of the disc ceramic membrane assembly comprises an air storage device for conveying compressed air to the disc ceramic membrane assembly through a pipeline, a pressure monitoring device, a pressure regulating valve, an electromagnetic valve and a control structure, wherein the pressure monitoring device, the pressure regulating valve and the electromagnetic valve are arranged on the pipeline; the control structure comprises a controller electrically connected with the pressure monitoring device and a switch electrically connected with the electromagnetic valve; the switch controls opening and closing of the electromagnetic valve to achieve opening and closing of the gas storage device, and the controller judges the sealing performance of the disc ceramic membrane assembly according to feedback information of the pressure monitoring device. According to the utility model, compressed air is adopted to carry out automatic sealing detection on the disc ceramic membrane, so that the situation that disassembly and reworking are needed when the disc ceramic membrane is detected to be unqualified after assembly is avoided, and the production efficiency and the product quality are obviously improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of filtration and purification, especially relates to a device for detecting the sealing property of disc ceramic membrane assembly. BACKGROUND

[0002] Disc ceramic membrane cross-flow filtration device is a kind of high-efficiency separation equipment widely used in chemical industry, pharmacy, food and beverage processing and other industries. It is mainly composed of a series of parallelly arranged ceramic membrane discs, and these discs are arranged in a closed shell. Each ceramic membrane disc has a small-pore channel, allowing liquid or gas to pass through, while retaining larger particles or contaminants. In the cross-flow filtration process, the fluid contacts the membrane surface at an angle and flows rapidly, which can reduce membrane surface pollution, improve filtration efficiency and prolong the service life of the membrane.

[0003] To ensure that the disc ceramic membrane cross-flow filtration device can effectively perform its functions, maintaining internal sealing is crucial. If the equipment cannot maintain a good sealing state, impurities in the external environment may enter the system interior, affecting the filtration quality and even damaging the sensitive ceramic membrane assembly. In addition, sealing failure may also cause the leakage of the material to be processed into the environment, causing resource waste and environmental pollution. Therefore, ensuring the sealing property of the equipment is essential for ensuring operation safety, product quality and environmental protection.

[0004] Many existing cross-flow filtration devices are not equipped with a device specifically for detecting sealing property. This means that when material leakage occurs, users often can only detect the existence of the problem through indirect signs (such as yield reduction, abnormal pressure change), rather than directly monitoring the sealing state. Once it is confirmed that material leakage has occurred, it is usually necessary to disassemble the entire machine for detailed inspection, which not only consumes time and effort, but also increases additional costs. Since the leakage point cannot be accurately located, maintenance personnel may need to check each component one by one, further prolonging the downtime. Currently, some manufacturers use water testing to conduct preliminary sealing property testing. However, this method requires injecting water into the device first, and then observing whether leakage occurs. If water leakage is indeed found, the water in the device must be emptied, and the shell must be removed before more in-depth inspection can be conducted. This process is not only complex and tedious, but also involves water waste and the risk of secondary pollution. SUMMARY

[0005] The utility model aims at providing a device for detecting the sealing property of disc ceramic membrane assembly to solve the technical problem of sealing property detection of disc ceramic membrane filtration device before use.

[0006] To achieve the above-mentioned purpose, the specific technical scheme of the device for detecting the sealing property of disc ceramic membrane assembly of the utility model is as follows:

[0007] A device for detecting the sealing property of a disc ceramic membrane assembly comprises a gas storage device for supplying compressed air to the disc ceramic membrane assembly through a pipeline, a pressure monitoring device, a pressure regulating valve and a solenoid valve arranged on the pipeline, and a control structure;

[0008] The pressure monitoring device feeds back pressure data to the control structure in real time, the solenoid valve controls the opening and closing of the gas storage device, and the pressure regulating valve is arranged between the pressure monitoring device and the solenoid valve to regulate the air pressure of the pipeline.

[0009] The control structure comprises a controller electrically connected with the pressure monitoring device and a switch electrically connected with the solenoid valve; the switch controls the opening and closing of the solenoid valve to realize the opening and closing of the gas storage device, and the controller judges the sealing property of the disc ceramic membrane assembly according to the feedback information of the pressure monitoring device.

[0010] As a further improvement of the utility model, the controller judges the sealing property of the disc ceramic membrane assembly according to the pressure information fed back by the pressure monitoring device within a certain time.

[0011] As a further improvement of the utility model, the solenoid valve is turned on through the switch to make the pressure in the pipeline reach the preset pressure value of the pressure regulating valve, and the controller judges the sealing property of the disc ceramic membrane assembly according to the pressure drop degree fed back by the pressure monitoring device within a certain time after the solenoid valve is turned off.

[0012] As a further improvement of the utility model, the control structure further comprises an indication structure electrically connected with the controller, and the controller expresses the sealing property detection result of the disc ceramic membrane assembly through the indication structure.

[0013] As a further improvement of the utility model, the switch comprises an opening button and a closing button for controlling the opening and closing of the solenoid valve respectively.

[0014] As a further improvement of the utility model, the indication structure comprises a first indicator lamp and a second indicator lamp electrically connected with the controller, the first indicator lamp is bright to indicate that the sealing property of the disc ceramic membrane assembly is qualified, and the second indicator lamp is bright to indicate that the sealing property of the disc ceramic membrane assembly is unqualified.

[0015] As a further improvement of the utility model, the disc ceramic membrane assembly comprises a hollow shaft body, a plurality of disc ceramic membranes and connectors sleeved on the shaft body, a drainage pipeline is arranged in the shaft body, the drainage pipeline is open at one end of the shaft body to form a drainage port, and the drainage port is communicated with the pipeline for the discharge of compressed air.

[0016] As a further improvement of the utility model, the protruding part is formed on the surface of the shaft body, the connector and the disc ceramic membrane are stacked in sequence from the protruding part along the shaft body, and the locking structure extrudes the connector and the disc ceramic membrane along the shaft body towards the protruding part; the locking structure comprises a locking block and an internal thread structure, the shaft body is provided with an external thread segment away from the protruding part, the locking block is sleeved on the shaft body to extrude the connector along the shaft body, the internal thread structure moves along the external thread segment to extrude the locking block, the connector and the disc ceramic membrane are installed and fixed on the shaft body, and a first sealing gasket is arranged between the locking block and the shaft body and surrounds the shaft body.

[0017] As a further improvement of the utility model, the connector is provided with opposite protruding connecting parts, the disc ceramic membrane is sleeved on the connecting parts, and a second sealing gasket is arranged on the periphery of the connecting parts.

[0018] As a further improvement of the utility model, the disc ceramic membrane is provided with a filter groove, the ceramic membrane covers the filter groove, the shaft body is provided with a drainage hole in the radial direction and communicated with the drainage pipeline, the connecting part is provided with a connecting groove connecting the drainage hole and the filter groove, and filtrate passing through the ceramic membrane and entering the filter groove enters the drainage pipeline through the drainage hole.

[0019] Advantageous effects:

[0020] The utility model discloses before the assembly of component, carries out the leakproofness test, can ensure that only the component that has passed the verification will enter the subsequent assembly process. This effectively avoids the rework phenomenon caused by poor sealing, saves a large amount of disassembly and reassembly time and cost. Since the problematic components can be identified and removed at an early stage, the work efficiency of the entire production line is greatly improved. Manufacturers no longer need to face product recall or additional quality control steps due to sealing problems, thereby speeding up the product listing speed. The pressure monitoring device monitors the pressure of the gas in the pipeline in real time and transmits these data to the controller in real time, ensuring that the pressure changes during the detection process are not ignored.

[0021] The compressed air is delivered to the disc ceramic membrane assembly through the gas storage device, and combined with the pressure monitoring device, pressure regulating valve and solenoid valve and other elements, the internal pressure of the assembly is accurately controlled and monitored in real time. The controller intelligently evaluates the sealing performance of the disc ceramic membrane assembly according to the pressure information fed back by the pressure monitoring device within a certain time. This method not only improves the detection accuracy, but also reduces the influence of human factors, ensures the consistency and reliability of the test results. Compressed air is used as the medium for sealing performance detection, instead of the traditional immersion method, which means that the assembly does not need to be placed in a liquid environment. This way not only prevents corrosion or other damage that may be caused by moisture, but also saves the trouble of emptying, drying and other processes, further shortening the detection period. There is no need to empty the liquid in the equipment, so the preparation time and recovery time are greatly shortened, and the work efficiency is improved.

[0022] The opening and closing of the solenoid valve is directly controlled by the switch, and the user only needs to press the button to complete the opening or closing operation of the gas storage device. At the same time, the solenoid valve is closed after reaching the preset pressure value, making the entire detection process more convenient and without the need for complex manual intervention. The application of the indication structure (such as the first indication lamp and the second indication lamp) provides a very intuitive way for the user to understand whether the assembly meets the sealing requirements. Different colored lights represent the pass or fail status, which is easy for non-professionals to understand and identify.

[0023] The disc ceramic membrane assembly adopts a design scheme of hollow shaft body, connector and locking structure, which not only ensures the close fit between the parts, but also specially sets up multiple sealing pads to enhance the overall sealing performance. These improvements effectively prevent leakage problems caused by improper assembly. The disc ceramic membrane is provided with a filter groove, and the filtrate is guided to the liquid discharge pipeline through structures such as the liquid discharge hole and the connecting groove. Such design not only ensures the effective separation of materials during filtration, but also facilitates subsequent cleaning and maintenance work, and is also conducive to the circulation of gas during sealing performance detection.

[0024] In summary, the detection device provided by the utility model significantly improves the efficiency and accuracy of the sealing performance detection of the disc ceramic membrane assembly, reduces the maintenance cost, and promotes the technological progress and development of the related industry. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a device structure schematic view for detecting the sealing performance of a disc ceramic membrane assembly.

[0026] Figure 2 It is a disc ceramic membrane and connector structure schematic view.

[0027] The markings in the diagram are as follows: 1. Gas storage device; 2. Pressure monitoring device; 3. Pressure regulating valve; 4. Solenoid valve; 5. Controller; 6. Switch; 61. Open button; 62. Close button; 7. Indicator structure; 71. First indicator light; 72. Second indicator light; 81. Disc ceramic membrane; 811. Filter tank; 82. Connector; 821. Connecting part; 822. Connecting groove; 823. Second sealing gasket; 83. Shaft; 831. External thread section; 832. Protrusion; 833. Drain pipe; 834. Drain hole; 84. Locking structure; 841. Locking block; 842. Internal thread structure; 843. First sealing gasket. Detailed Implementation

[0028] To enhance understanding of this utility model, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. These embodiments are only used to explain the present utility model and do not constitute a limitation on the scope of protection of the present utility model.

[0029] Implementation example:

[0030] like Figure 1 The device shown is for detecting the sealing performance of a disc ceramic diaphragm assembly. It includes a pressure monitoring device 2, a pressure regulating valve 3, a solenoid valve 4, and a gas storage device 1 connected via pipelines, as well as a control structure electrically connected to the pipelines. The gas storage device 1, acting as a sealing container, provides compressed air as the medium for sealing performance testing via pipelines. A solenoid valve 3 is installed at the outlet end of the gas storage device 1. The solenoid valve 4 controls the opening and closing of the gas storage device 1. A pressure regulating valve 3 is then installed on the pipeline, adjusting the compressed gas supplied by the gas storage device 1 to a pressure level suitable for sealing performance testing, accurately maintaining a constant pressure output according to a preset pressure. The pressure monitoring device 2 is responsible for real-time monitoring and feedback of the internal air pressure of the disc ceramic diaphragm assembly. In this embodiment, the pressure monitoring device is a pressure gauge, which can visually display and monitor pressure data.

[0031] In the control structure, controller 5 is the core control unit of the entire disc ceramic diaphragm assembly sealing performance testing device. It is responsible for coordinating and managing the operation between various components, ensuring the normal operation of the device and achieving efficient and accurate sealing performance testing. Controller 5 judges the sealing performance test result based on the pressure information fed back by pressure monitoring device 2 and the pressure change over a certain period, and outputs the result to the indicator structure 7. The indicator structure 7 expresses the controller's testing result for the disc ceramic diaphragm assembly sealing performance in a visual way, which can be through various methods such as sound, vibration, and image. In this embodiment, two different colored lights are used as the expression method: the first indicator light 71 illuminates when the controller determines that the sealing performance test is qualified, and the second indicator light 72 illuminates when the controller determines that the sealing performance test is unqualified. Switch 6 is used to control the opening and closing of solenoid valve 4. In this embodiment, an open button 61 and a close button 62 are used to control the opening and closing of solenoid valve 4 respectively. This separate opening and closing control helps to avoid accidental start-up or stoppage due to a single switch malfunction or accidental contact.

[0032] As the core component for achieving efficient separation in the filtration device, the disc ceramic membrane assembly directly affects the performance and reliability of the entire system. The shaft 83 is connected to the drive assembly and rotates at high speed under its drive, causing the disc ceramic membrane 81 to rotate. The lower end of the shaft 83 has an annular protrusion 832. The disc ceramic membrane 81 and connector 82 are stacked sequentially along the shaft 83 from the protrusion. An external thread section 831 is provided on the surface of the shaft 83 away from the protrusion 832. The connector 82 and disc ceramic membrane 81 are stacked below the external thread section 831. A locking block 841 presses down on the uppermost connector 82 along the shaft 83 from top to bottom. An internal thread structure 842 rotates downwards on the external thread section 831 through a threaded engagement, pressing down on the locking block 841. In this embodiment, the internal thread structure 842 is a nut. Pressing the locking block 841 securely mounts the disc ceramic membrane 81 on the shaft 83. Meanwhile, to ensure sealing, an annular first sealing gasket 843 is provided between the locking block 841 and the shaft 83.

[0033] The shaft 83 has a hollow interior with a drain pipe 833. One end of the drain pipe 833 opens at the lower end of the shaft 83 to form a drain port, which connects to an external outlet to discharge the filtrate from the filtration device. In this embodiment, the drain port is connected to the gas storage device 1 via a pipeline. The surface of the shaft 83 has radially arranged drain holes 834 that communicate with the drain pipe 833. Figure 2As shown, connector 82 has protruding connecting portions 821 on both sides. An annular disc ceramic membrane 81 is fitted onto the connecting portion 821. An annular second sealing gasket 823 is provided on the surface of connector 82 around the connecting portion, which ensures the seal between connector 82 and disc ceramic membrane 81 while clamping the disc ceramic membrane 81. A filter tank 811 is provided inside the disc ceramic membrane 81. The surface of the filter tank 811 is covered with a ceramic membrane. The tiny pores on the ceramic membrane allow liquid or gas to pass through while trapping larger particles, suspended solids, or contaminants. The filtrate that permeates through the ceramic membrane enters the filter tank 811. A connecting groove 822 is provided radially along the shaft 83 in the connecting portion 821. The connecting groove 822 connects the filter tank 811 and the drain hole 834. The filtrate collected in the filter tank 811 enters the drain pipe 833 along the connecting groove 822 and the drain hole 834. The first sealing gasket 843 and the second sealing gasket 823 are installed at the component connection to ensure the sealing of the component. As the location is prone to leakage, it is the key monitoring area for airtightness testing.

[0034] In use, the actual test pressure should be determined according to the number and size of the disc ceramic membranes 81. In this embodiment, five disc ceramic membranes 81 with a diameter of 150mm are used as an example. First, the preset pressure of the membrane module is set to 0.1 bar through the pressure regulating valve 3. Then, the solenoid valve 4 is opened by the start button 61 to allow compressed air from the air storage device to enter the pipeline. After observing that the pressure gauge reading reaches 0.1 bar, the stop button 62 is pressed to close the solenoid valve 4 and stop the input of compressed air. At this time, the controller 5 monitors the pressure change value. In this embodiment, the test duration is 30 seconds. If the pressure drop does not reach 0.05 bar within 30 seconds, the controller 5 determines that the sealing test has passed and sends a qualified signal to the indicator structure 7, and the first indicator light 71 lights up. If the pressure drop exceeds 0.05 bar within 30 seconds, the controller 5 determines that the sealing test has failed and sends a failed signal to the indicator structure, and the second indicator light 72 lights up.

[0035] This invention uses compressed air for sealing testing, avoiding the cumbersome procedure of disassembling the filter components one by one after a failed test, as required by traditional testing methods, thus reducing additional maintenance work caused by testing. The pressure monitoring device, combined with the controller, provides real-time pressure data feedback. Operators can immediately understand the test progress, and the system can automatically adjust based on this data to ensure the consistency and accuracy of test conditions, reducing the possibility of human intervention and improving work efficiency and the reliability of test results. Early detection of potential sealing problems prevents issues from arising in actual use. Rigorous sealing testing helps ensure that every ceramic diaphragm disc assembly leaving the factory has excellent sealing performance, thereby improving the quality and reliability of the final product. Effective sealing testing can eliminate defective components at an early stage, reducing the need for frequent maintenance and replacement due to leakage later, and lowering operating costs.

[0036] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A device for detecting the sealing performance of a disc ceramic diaphragm assembly, characterized in that, It includes an air storage device for supplying compressed air to a disc ceramic diaphragm assembly via a pipeline, a pressure monitoring device, a pressure regulating valve and a solenoid valve installed on the pipeline, and a control structure; The pressure monitoring device feeds back pressure data to the control structure in real time, the solenoid valve controls the opening and closing of the gas storage device, and the pressure regulating valve is set between the pressure monitoring device and the solenoid valve to regulate the gas pressure in the pipeline. The control structure includes a controller electrically connected to the pressure monitoring device and a switch electrically connected to the solenoid valve; the switch controls the opening and closing of the solenoid valve to realize the opening and closing of the gas storage device, and the controller determines the sealing performance of the disc ceramic membrane assembly based on the feedback information from the pressure monitoring device.

2. The apparatus for detecting the sealing performance of a disc ceramic membrane assembly according to claim 1, characterized in that, The controller determines the sealing performance of the disc ceramic membrane assembly based on the pressure information fed back by the pressure monitoring device within a certain period of time.

3. The apparatus for detecting the sealing performance of a disc ceramic membrane assembly according to claim 2, characterized in that, The solenoid valve is opened by the switch to make the pressure in the pipeline reach the preset pressure value of the pressure regulating valve. After the solenoid valve is closed, the controller judges the sealing performance of the disc ceramic diaphragm group based on the pressure drop feedback from the pressure monitoring device within a certain period of time.

4. The apparatus for detecting the sealing performance of a disc ceramic membrane assembly according to claim 2, characterized in that, The control structure also includes an indicator structure electrically connected to the controller, through which the controller expresses the sealing test result of the disc ceramic membrane assembly.

5. The apparatus for detecting the sealing performance of a disc ceramic membrane assembly according to claim 1, characterized in that, The switch includes an on button and an off button, which control the opening and closing of the solenoid valve, respectively.

6. The apparatus for detecting the sealing performance of a disc ceramic membrane assembly according to claim 4, characterized in that, The indicator structure includes a first indicator light and a second indicator light that are electrically connected to the controller. When the first indicator light is lit, it indicates that the sealing performance of the disc ceramic diaphragm assembly is qualified, and when the second indicator light is lit, it indicates that the sealing performance of the disc ceramic diaphragm assembly is unqualified.

7. The apparatus for detecting the sealing performance of a disc ceramic membrane assembly according to claim 1, characterized in that, The disc ceramic membrane assembly includes a hollow shaft and several disc ceramic membranes and connectors sleeved on the shaft. A drain pipe is provided inside the shaft, and the drain pipe opens at one end of the shaft to form a drain port. The drain port is connected to the pipeline for the discharge of compressed air.

8. The apparatus for detecting the sealing performance of a disc ceramic membrane assembly according to claim 7, characterized in that, The shaft surface is surrounded by a protruding protrusion, the connector and the disc ceramic film are stacked sequentially from the protrusion along the shaft, and the locking structure presses the connector and the disc ceramic film along the shaft toward the protrusion; The locking structure includes a locking block and an internal thread structure. The shaft body is provided with an external thread section away from the protrusion. The locking block is sleeved on the shaft body and presses the connector along the shaft body. The internal thread structure moves along the external thread section and presses the locking block to realize the installation and fixation of the connector and the disc ceramic diaphragm on the shaft body. A first sealing gasket is provided between the locking block and the shaft body, surrounding the shaft body.

9. The apparatus for detecting the sealing performance of a disc ceramic membrane assembly according to claim 7, characterized in that, The connector has relatively protruding connecting parts on both sides, and the inner side of the annular disc ceramic membrane is sleeved on the connecting part. The outer periphery of the connecting part is provided with an annular second sealing gasket.

10. The apparatus for detecting the sealing performance of a disc ceramic membrane assembly according to claim 9, characterized in that, The disc ceramic membrane is provided with a filter tank, and the ceramic membrane covers the filter tank. The surface of the shaft is provided with a drain hole that communicates with the drain pipe. The connecting part is provided with a connecting groove that connects the drain hole and the filter tank. The filtrate that passes through the ceramic membrane into the filter tank enters the drain pipe through the drain hole.

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