Device for manually testing water pressure resistance and bubble point

Abstract

The utility model discloses a device for manually testing water pressure resistance and bubble point, which relates to the technical field of test equipment and comprises a first pipe body, a hoop, a second pipe body, a three-way connecting block and an exhaust valve core. The end, opposite to the first pipe body, of the second pipe body communicates with the three-way connecting block, the three-way connecting block is hollow, a cavity communicating with the second pipe body is formed, a first connector of the three-way connecting block communicates with a pressure storage tank through a first quick connector, and a second connector of the three-way connecting block communicates with a second pipe body through a second quick connector. A second connector of the three-way connecting block is connected with a pressure difference transmitter through a second quick connector, a fourth connector of the three-way connecting block is communicated with the exhaust valve element, and the second pipe body and the first pipe body are fixed through the hoop. And the water pressure resistance or bubble point of the diaphragm is tested by placing the diaphragm between the second pipe body and the first pipe body. The diaphragm integrity testing device is low in cost and simple to operate and clean, and can solve the problem of high diaphragm integrity testing cost in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, specifically to a device for manually testing water pressure resistance and bubble point. Background Technology

[0002] Aseptic filtration systems remove microorganisms from liquids or gases through physical interception (such as 0.2μm / 0.22μm sterilization-grade filter cartridges), ensuring the sterility of the final product. They are the core barrier of aseptic processes in the pharmaceutical industry.

[0003] The core component of a sterile filtration system includes a filter, which contains a sterilization-grade filter element. This filter element is typically made of hydrophilic membranes such as PES, PVDF, or nylon, or hydrophobic membranes such as PTFE used for gas filtration. Integrity testing is required during the filter's development process.

[0004] Currently, in the integrity testing of filters, the bubble point / water pressure resistance test of hydrophilic / hydrophobic membranes relies more on integrity testing instruments. For early-stage research and development, this involves high investment costs, and the operation of integrity testing instruments is relatively complex. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a device for manually testing water pressure resistance and bubble point, aiming to solve the problems of high investment costs and overly complex operation caused by using an integrity tester to test the bubble point / water pressure resistance of membranes in existing technologies.

[0006] To achieve the above objectives, the embodiments of this utility model are implemented through the following technical solution: A device for manually testing water pressure resistance and bubble point, comprising: a first tube body and a second tube body, an observation port being provided at the end of the first tube body facing away from the second tube body, a diaphragm being sandwiched between the first tube body and the second tube body, the first tube body and the second tube body being fixedly connected by a clamp, a three-way connecting block being connected to the side of the second tube body facing away from the first tube body, the three-way connecting block being hollow inside, forming a cavity communicating with the second tube body, a first connection port communicating with the cavity being opened on the side of the three-way connecting block facing away from the second tube body, a second connection port being opened on one side wall of the three-way connecting block, the second connection port being connected to a differential pressure transmitter, the first connection port being connected to a pressure storage tank, a regulating valve being provided on the pressure storage tank, the pressure storage tank being used to load purified water or air, and a fourth interface being opened on the three-way connecting block, the fourth interface being connected to an exhaust valve core.

[0007] Compared with existing technologies, the advantages of this invention are as follows: By placing the membrane between the first tube and the second tube, adjusting the regulating valve on the pressure tank allows purified water or air to sequentially pass through the first quick connector, the three-way connector, and the second tube to reach the membrane. The water seepage or bubble formation on the membrane is then observed in the observation port of the first tube, thereby achieving the water pressure resistance or bubble point test of the membrane. After the test, the gas is discharged from the exhaust valve core. This invention is highly flexible and simple to operate, enabling bubble point testing of hydrophilic membranes / IPA bubble point testing of hydrophobic membranes, as well as water pressure resistance testing of hydrophobic membranes. Compared to integrity testing instruments, it saves on initial research and development costs and effectively reduces operational complexity. Cleaning is also convenient for operators after the test.

[0008] Furthermore, a placement plate is provided at one end of the first tube facing the second tube. The placement plate is arranged around the periphery of the opening of the first tube, and the outer diameter of the placement plate is larger than the outer diameter of the first tube.

[0009] Furthermore, the diaphragm is provided with a porous support rib on the side facing the first tube, and the porous support rib abuts against the placement plate.

[0010] Furthermore, a gasket is provided on the side of the diaphragm facing the second tube body. The gasket is a soft gasket, and the side of the gasket facing away from the diaphragm abuts against the second tube body.

[0011] Furthermore, the second tube is funnel-shaped.

[0012] Furthermore, the clamp includes a first clamp arm and a second clamp arm. One end of the first clamp arm is rotatably connected to one end of the second clamp arm via a pin, so that the other end of the first clamp arm is close to or away from the other end of the second clamp arm. The first clamp arm and the second clamp arm enclose each other to form a clamping cavity, so as to fix the first tube body and the second tube body in the clamping cavity.

[0013] Furthermore, a partition block is provided inside the first tube to divide the first tube into several channels.

[0014] Furthermore, the first connection port is connected to the pressure storage tank via a first quick connector.

[0015] Furthermore, the second connection port is connected to the differential pressure transmitter via a second quick connector.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 This is a schematic diagram of the device for manually testing water pressure resistance and bubble point in an embodiment of this utility model, viewed from a first perspective.

[0019] Figure 2 This is a disassembly diagram of the device for manually testing water pressure resistance and bubble point in an embodiment of this utility model, viewed from a first perspective.

[0020] Figure 3 This is a schematic diagram of the device for manually testing water pressure resistance and bubble point in an embodiment of this utility model, viewed from a second perspective.

[0021] Figure 4 This is a disassembly diagram of the device for manually testing water pressure resistance and bubble point in an embodiment of this utility model, viewed from a second perspective.

[0022] Explanation of key component symbols in the diagram:

[0023] 1. First pipe body; 2. Clamp; 3. Second pipe body; 4. T-connector block; 41. First quick connector; 42. Second quick connector; 5. Exhaust valve core; 6. Perforated support rib; 7. Diaphragm; 8. Gasket. Detailed Implementation

[0024] To make the objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.

[0025] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," "upper," "lower," and similar expressions used herein are for illustrative purposes only and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

[0026] In this utility model, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. The term "and / or" as used herein includes any and all combinations of one or more of the related listed items.

[0027] Please see Figures 1 to 4 The present invention provides a device for manually testing water pressure resistance and bubble point, comprising: a first pipe body 1, a clamp 2, a second pipe body 3, a three-way connecting block 4, and an exhaust valve core 5. An observation port is provided at the end of the first tube 1 facing away from the second tube 3 for observing the condition of the diaphragm 7 during testing. A partition block is provided inside the first tube 1 to divide the interior into several channels. The uniformity of the diaphragm 7 material is judged by observing water seepage or air bubbles. A placement plate is provided at one end of the first tube 1, surrounding the opening of the first tube 1. The outer diameter of the placement plate is larger than the outer diameter of the first tube 1. The clamp 2 includes a first clamp arm and a second clamp arm. One end of the first clamp arm is rotatably connected to one end of the second clamp arm via a pin, allowing the other end of the first clamp arm to move closer to or further away from the other end of the second clamp arm. The first clamp arm and the second clamp arm form a locking cavity to fix the first tube 1 and the second tube 3 within the locking cavity. The end of the second tube 3 facing away from the tee connector 4 is adapted to one end of the placement block of the first tube 1. A diaphragm 7 is sandwiched between the first tube 1 and the second tube 3. A three-way connector 4 is connected to the end of the second tube 3 facing away from the first tube 1. The three-way connector 4 is hollow, forming a cavity that communicates with the second tube 3. A first connection port communicating with the cavity is opened on the side of the three-way connector 4 facing away from the second tube 3. The first connection port is connected to the pressure tank through a first connector. A regulating valve is installed on the pressure tank. The pressure tank is used to load purified water or air. A second connection port is opened on one side wall of the three-way connector 4. The second connection port is connected to a differential pressure transmitter through a second quick connector. The second tube 3 is funnel-shaped. The funnel shape is used to contain the purified water or air discharged from the pressure tank, increasing the contact area between the purified water or air and the diaphragm 7 to ensure the accuracy of the test. The exhaust valve core 5 is connected to the fourth interface of the three-way connector 4. After the integrity test is completed, the gas in the device is discharged from the exhaust valve core 5.

[0028] Before the integrity test of diaphragm 7, the airtightness of the device is checked. Once the airtightness is confirmed, the integrity test of diaphragm 7 begins. A porous support rib 6 is placed on the side of diaphragm 7 facing the first tube 1. One side of the porous support rib 6 abuts against the placement plate of the first tube 1. The porous support rib is located between the first tube 1 and the diaphragm to ensure the compressive strength of diaphragm 7. The shape and size of the porous support rib 6 are consistent with that of diaphragm 7. A gasket 8 is placed on the side of diaphragm 7 facing the second tube 3. The gasket 8 is located between diaphragm 7 and the second tube 3. The gasket 8 is made of a soft material to prevent mechanical compression from damaging the membrane structure of diaphragm 7. The clamp 2 connects and fixes the... The first tube 1 and the second tube 3 are assembled. When testing the water pressure resistance of the hydrophobic membrane, purified water is put into the pressure tank. The inlet of the pressure tank is connected to a gas source. After the connection is completed, the observation port of the first tube 1 is turned upward, and the regulating valve is slowly adjusted to increase the pressure. The purified water in the pressure tank passes through the first quick connector 41, the three-way connector 4, and the second tube 3 in sequence. The water seepage of the membrane 7 is observed at the observation port of the first tube 1. When water begins to seep out of the membrane 7, the pressure at this time is the water pressure resistance of the membrane 7.

[0029] When testing the bubble point of a hydrophilic membrane / IPA bubble point of a hydrophobic membrane, with the observation port of the first tube 1 facing upwards, add purified water into the first tube 1 through the observation port. Slowly adjust the regulating valve on the pressure tank, and the gas passes through the first quick connector 41, the three-way connector 4, and the second tube 3 in sequence. Observe whether bubbles are generated on the surface of the membrane 7 at the observation port of the first tube 1. When the first bubble appears and continues, it is the bubble point of the membrane 7. Continue to pressurize. When the membrane 7 produces continuous bubbles, it is the bubble point of the membrane 7. Record this value, and the bubble point test is over. After depressurization, pour the purified water from the first tube 1 into a beaker and clean the test device. The bubble point test is over.

[0030] This invention is highly flexible and easy to operate. It can perform bubble point tests on hydrophilic membranes, IPA bubble point tests on hydrophobic membranes, and water pressure resistance tests on hydrophobic membranes. Compared with integrity testers, it can save on early research and development costs and effectively reduce operational complexity. After the test, the operator can easily clean the membrane without affecting the next test.

[0031] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0032] The above-described embodiments are merely one implementation of this utility model, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A device for manually testing water pressure resistance and bubble point, characterized in that, include: A first tube and a second tube are connected. An observation port is provided at the end of the first tube facing away from the second tube. A diaphragm is sandwiched between the first tube and the second tube. The first tube and the second tube are fixedly connected by a clamp. A three-way connector is connected to the side of the second tube facing away from the first tube. The three-way connector is hollow, forming a cavity that communicates with the second tube. A first connection port communicating with the cavity is opened on the side of the three-way connector facing away from the second tube. A second connection port is opened on one side wall of the three-way connector. The second connection port is connected to a differential pressure transmitter. The first connection port is connected to a pressure tank. A regulating valve is provided on the pressure tank. The pressure tank is used to store purified water or air. A fourth interface is also opened on the three-way connector. The fourth interface is connected to an exhaust valve core.

2. The device for manually testing water pressure resistance and bubble point according to claim 1, characterized in that: A placement plate is provided at one end of the first tube facing the second tube. The placement plate is arranged around the periphery of the opening of the first tube, and the outer diameter of the placement plate is larger than the outer diameter of the first tube.

3. The device for manually testing water pressure resistance and bubble point according to claim 2, characterized in that: The diaphragm is provided with a porous support rib on the side facing the first tube, and the porous support rib abuts against the placement plate.

4. The device for manually testing water pressure resistance and bubble point according to claim 1, characterized in that: A gasket is provided on the side of the diaphragm facing the second tube body. The gasket is a soft gasket, and the side of the gasket facing away from the diaphragm abuts against the second tube body.

5. The device for manually testing water pressure resistance and bubble point according to claim 1, characterized in that: The second tube is funnel-shaped.

6. The device for manually testing water pressure resistance and bubble point according to claim 1, characterized in that: The clamp includes a first clamp arm and a second clamp arm. One end of the first clamp arm is rotatably connected to one end of the second clamp arm via a pin, so that the other end of the first clamp arm is close to or away from the other end of the second clamp arm. The first clamp arm and the second clamp arm enclose each other to form a clamping cavity, and the first tube body and the second tube body are fixedly connected in the clamping cavity.

7. The device for manually testing water pressure resistance and bubble point according to claim 1, characterized in that: A partition block is provided inside the first tube to divide the first tube into several channels.

8. The device for manually testing water pressure resistance and bubble point according to claim 1, characterized in that: The first connection port is connected to the pressure storage tank via a first quick connector.

9. The device for manually testing water pressure resistance and bubble point according to claim 1, characterized in that: The second connection port is connected to the differential pressure transmitter via a second quick connector.

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