Integrity tester for filter

Abstract

The utility model discloses an integrity tester for a filter, and relates to the technical field of filter detection, in particular to the integrity tester for the filter, which comprises an integrity tester, an air pipe is connected onto the integrity tester, and a connector is fixed at one end of the air pipe. A water storage cavity for storing purified water is formed in the integrity tester, a water pipe is fixed to the integrity tester and connected with a connector, a water channel sealing plate for sealing the water pipe is movably connected to the interior of the connector, an inner sealing plate is connected to the interior of the integrity tester, and a water outlet is formed in the connector. And the water channel closing plate can be independently opened. According to the integrity tester for the filter, during installation, the filter can push the water channel closing plate to move, when the water channel closing plate does not make contact with the inner closing plate, the water channel closing plate can be opened, and then a water pipe can convey purified water into the filter.

Description

Technical Field

[0001] The utility model relates to the technical field of filter detection, in particular to an integrity tester for a filter. Background Art

[0002] The integrity tester, also known as the filter integrity tester, uses internationally recognized integrity testing technology to perform integrity testing and certification on filter elements that filter liquids and gases in the pharmaceutical industry. Through a series of integrity tests, including bubble point test, pressure holding test, diffusion flow test, and water intrusion test, its filtration performance is judged to ensure the integrity of the filter element. The sanitation and sterility of the pharmaceutical industry is also a guarantee for the life safety of users. When the filter is tested, it is usually tested by the bubble point method. When the filter membrane and the filter element are completely infiltrated with a certain solution, and then pressurized on one side by the gas source (there is an air intake system in the instrument, which can stabilize the pressure and adjust the air intake), as the pressure increases, the gas is released from one side of the filter membrane, showing that bubbles of varying sizes and quantities appear on one side of the membrane. The corresponding pressure value is judged by the instrument as the bubble point, so that the filter is tested. However, before the instrument and the filter are installed and connected, it is necessary to use another device to add purified water to the filter to immerse the filter element inside it before the air pipe on the instrument can be connected to the filter. In this way, when testing the filter, it is necessary to distribute it, which makes the detection inconvenient. For this reason, we propose a filter integrity tester. Utility Model Content

[0003] The utility model provides an integrity tester for a filter, which solves the problems raised by the above background technology.

[0004] To achieve the above purpose, the utility model is implemented through the following technical solutions: a filter integrity tester, including an integrity tester, an air pipe connected to the integrity tester, and a connector fixed at one end of the air pipe, a water storage chamber for storing purified water is opened inside the integrity tester, and a water pipe is fixed on the integrity tester, the water pipe is connected to the connector, a waterway closing plate for closing the water pipe is movably connected inside the connector, and an inner closing plate is connected inside the integrity tester, the waterway closing plate can be opened separately, and the waterway closing plate and the inner closing plate can close the connector, a clamping ring is movably installed on the inner side of one end of the connector, and a locking ring for pushing the clamping ring for limitation is provided on the outer side of one end of the connector.

[0005] Optionally, a fixing frame is fixed inside the connecting head, and a second spring is fixed on one side of the water channel closing plate, and the second spring is fixed to the fixing frame.

[0006] Optionally, a first spring is fixed to one end of the inner closing plate, one end of the first spring is fixed to the fixing frame, and the elastic force of the first spring is greater than the elastic force of the second spring.

[0007] Optionally, a central column is fixed in the middle of one side of the fixing frame, the outer side of the central column is in contact with the inner closing plate, and the outer side of the inner closing plate is in contact with the inner side of the waterway closing plate.

[0008] Optionally, a plurality of connection columns with gaps are fixed to the other side of the water channel closing plate, and an outer closing plate is commonly fixed to one end of the connection columns, wherein the outer closing plate is sleeved with the central column and closes the connecting head.

[0009] Optionally, there are inward-locking teeth on the inner side of one end of the clamping ring, and there is an inclined surface on the outer side of one end of the clamping ring, and a section corresponding to the inclined surface is opened on the locking ring.

[0010] Optionally, an external threaded plate is fixed to one end of the connector, the inner side of the external threaded plate is in contact with the outer side of the clamping ring, and the outer side of the external threaded plate is threadably mounted on the inner side of the locking ring.

[0011] The utility model has the following beneficial effects:

[0012] 1. The filter integrity tester can push the water channel closing plate to move during installation. When the water channel closing plate is not in contact with the inner closing plate, the water channel closing plate can be opened, so that the water pipe can transport purified water into the filter, avoiding the need for an additional water delivery device to transport water into the filter, thereby making it more convenient to use.

[0013] 2. The integrity tester for the filter can close the water pipe by its outer closing plate when the inner closing plate contacts the waterway closing plate, and can still close the water pipe after the inner closing plate is opened, so that the connector can be connected to the filter for testing. In this way, the switching can be completed quickly, making its operation more convenient and making its use more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the connector of the utility model;

[0017] Figure 4 This is a schematic diagram of the cross-sectional structure of the connector of the utility model;

[0018] Figure 5 It is a structural schematic diagram of the clamping ring connection of the utility model.

[0019] In the figure: 1. Integrity tester; 2. Air pipe; 3. Connector; 4. Water pipe; 5. Water storage chamber; 6. Locking ring; 7. Clamping ring; 8. Fixing frame; 9. Center column; 10. Inner closing plate; 11. First spring; 12. Second spring; 13. Water channel closing plate; 14. Connecting column; 15. Outer closing plate; 16. External threaded plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figures 1 to 5A filter integrity tester includes an integrity tester 1, an air pipe 2 is connected to the integrity tester 1, and a connector 3 is fixed at one end of the air pipe 2, which is connected to the filter through the connector 3, so that the integrity tester 1 is connected to the filter, and then the filter is tested, a water storage chamber 5 for storing purified water is provided inside the integrity tester 1, and a water pump is installed inside the water storage chamber 5, the water pump is connected to a water pipe 4, so that the purified water in the water pipe 4 can be transported into the water pipe 4, and a water pipe 4 is fixed on the integrity tester 1, the water pipe 4 is connected to the connector 3, and through the connection of the water pipe 4, the purified water in the water storage chamber 5 can be transported into the connector 3, and then it can be input into the filter, and a waterway sealing plate 13 that seals the water pipe 4 is movably connected inside the connector 3, and under the limitation of the connector 3, the waterway sealing plate 13 can move along the fixed The integrity tester 1 is provided with an inner sealing plate 10 connected to the inside thereof, and is limited by the connector 3, so that it can move along a fixed trajectory. The waterway sealing plate 13 can be opened separately, so that the purified water in the water storage chamber 5 can be smoothly filled into the filter. The waterway sealing plate 13 and the inner sealing plate 10 can seal the connector 3, so that when the connector 3 is separated from the filter, the connector 3 can be sealed in time. A clamping ring 7 is movably installed on the inner side of one end of the connector 3, and a locking ring 6 is provided on the outer side of one end of the connector 3 for pushing the clamping ring 7 for limitation. When the clamping ring 7 moves, the clamping ring 7 is deformed, so that the clamping ring 7 can contact with the filter, so that the connector 3 can be tightly connected with the filter.

[0022] See also Figures 1 to 5 A fixing frame 8 is fixed inside the connecting head 3, and a second spring 12 is fixed on one side of the water channel closing plate 13. The second spring 12 is fixed to the fixing frame 8. Under the action of the elastic force of the second spring 12, the water channel closing plate 13 can be reset, thereby closing the water pipe 4.

[0023] See also Figures 1 to 5A first spring 11 is fixed to one end of the inner sealing plate 10, and one end of the first spring 11 is fixed to the fixing frame 8. Under the action of the elastic force of the first spring 11, the inner sealing plate 10 can be reset, so that the connector 3 can be closed, and the elastic force of the first spring 11 is greater than the elastic force of the second spring 12. Then, when the waterway sealing plate 13 is pushed, the inner sealing plate 10 can remain stationary, so that the waterway sealing plate 13 can be opened separately, so that purified water can flow, and when the waterway sealing plate 13 contacts the inner sealing plate 10, it can push the inner sealing plate 10 to move, so that the inner sealing plate 10 is opened, and when the inner sealing plate 10 is opened, the outer sealing plate 15 can close the water pipe 4, so as to open the connector 3 separately to detect the filter.

[0024] See also Figures 1 to 5 A center column 9 is fixed in the middle of one side of the fixing frame 8, and the outer side of the center column 9 contacts the inner closing plate 10, thereby limiting the moving trajectory of the inner closing plate 10, and the outer side of the inner closing plate 10 contacts the inner side of the waterway closing plate 13, thereby enabling the waterway closing plate 13 and the inner closing plate 10 to move relative to each other.

[0025] See also Figures 1 to 5 A plurality of connecting columns 14 with gaps are fixed on the other side of the waterway closing plate 13, so that when the waterway closing plate 13 is opened, the purified water can pass through the gaps between the connecting columns 14 and enter the filter. Under the transmission of the connecting columns 14, the waterway closing plate 13 and the outer closing plate 15 can move together. An outer closing plate 15 is fixed to one end of the connecting column 14, and the outer closing plate 15 is sleeved with the center column 9 and closes the connector 3. When the inner closing plate 10 contacts the waterway closing plate 13, the outer closing plate 15 can close the water pipe 4. When the waterway closing plate 13 pushes the inner closing plate 10 to open, the outer closing plate 15 can still close the water pipe 4, thereby ensuring that the connector 3 can be connected to the filter alone.

[0026] See also Figures 1 to 5 There are inward-locking teeth on the inner side of one end of the clamping ring 7, which increases the roughness of its surface and increases the friction. There is an inclined surface on the outer side of one end of the clamping ring 7, and a section corresponding to the inclined surface is opened on the locking ring 6. When the locking ring 6 moves, it can push the clamping ring 7, so that the clamping ring 7 can be deformed and contact with the filter, increasing the pressure between them, thereby increasing its locking force.

[0027] See also Figures 1 to 5An external threaded plate 16 is fixed to one end of the connector 3, and the inner side of the external threaded plate 16 contacts the outer side of the clamping ring 7. The outer side of the external threaded plate 16 is threadedly mounted on the inner side of the locking ring 6. The locking ring 6 can be moved by rotating the locking ring 6, and the position of the locking ring 6 can be locked by moving the locking ring 6 in a threaded manner, thereby ensuring the locking force.

[0028] In summary, when the filter integrity tester is used, the connector 3 is plugged into the filter, and the filter contacts the outer sealing plate 15, which is then pushed to move. Under the push of the outer sealing plate 15, the connecting column 14 pushes the waterway sealing plate 13 to move, and the waterway sealing plate 13 opens the water pipe 4, so that the water pipe 4 is connected to the filter, and the purified water in the water storage chamber 5 enters the connector 3 through the water pipe 4, and then enters the interior of the filter through the connecting columns 14, and then continues to move the waterway sealing plate 13, and the waterway sealing plate 13 pushes the inner sealing plate 10, so that the connector 3 is connected to the filter. At this time, the outer sealing plate 15 just closes the water pipe 4, so that the integrity tester 1 can be connected to the filter through the air pipe 2 to perform integrity detection on the filter.

[0029] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not expressly listed, or also includes elements inherent to such process, method, article, or apparatus.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A filter integrity tester, comprising an integrity tester (1), an air tube (2) connected to the integrity tester (1), and a connector (3) fixed to one end of the air tube (2), characterized in that: The integrity tester (1) is provided with a water storage chamber (5) for storing purified water, and a water pipe (4) is fixed on the integrity tester (1), the water pipe (4) is connected to the connector (3), a waterway sealing plate (13) for sealing the water pipe (4) is movably connected inside the connector (3), and an inner sealing plate (10) is connected inside the integrity tester (1), the waterway sealing plate (13) can be opened separately, and the waterway sealing plate (13) and the inner sealing plate (10) can seal the connector (3), a clamping ring (7) is movably installed on the inner side of one end of the connector (3), and a locking ring (6) for pushing the clamping ring (7) for limiting is arranged on the outer side of one end of the connector (3).

2. A filter integrity tester according to claim 1, characterized in that: A fixing frame (8) is fixed inside the connecting head (3), and a second spring (12) is fixed on one side of the water channel sealing plate (13), and the second spring (12) is fixed to the fixing frame (8).

3. A filter integrity tester according to claim 2, characterized in that: A first spring (11) is fixed to one end of the inner closing plate (10), one end of the first spring (11) is fixed to the fixing frame (8), and the elastic force of the first spring (11) is greater than the elastic force of the second spring (12).

4. A filter integrity tester according to claim 3, characterized in that: A central column (9) is fixed in the middle of one side of the fixing frame (8), the outer side of the central column (9) contacts the inner sealing plate (10), and the outer side of the inner sealing plate (10) contacts the inner side of the waterway sealing plate (13).

5. A filter integrity tester according to claim 4, characterized in that: A plurality of connection columns (14) with gaps therebetween are fixed to the other side of the waterway sealing plate (13), and an outer sealing plate (15) is fixed to one end of each of the connection columns (14). The outer sealing plate (15) is sleeved with the central column (9) and seals the connector (3).

6. A filter integrity tester according to claim 5, characterized in that: An inwardly buckled tooth pattern is provided on the inner side of one end of the clamping ring (7), an inclined surface is provided on the outer side of one end of the clamping ring (7), and a cut surface corresponding to the inclined surface is provided on the locking ring (6).

7. A filter integrity tester according to claim 6, characterized in that: An external threaded plate (16) is fixed to one end of the connector (3), the inner side of the external threaded plate (16) is in contact with the outer side of the clamping ring (7), and the outer side of the external threaded plate (16) is threadably mounted on the inner side of the locking ring (6).

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