Detection device for inorganic ceramic diaphragm

Abstract

In order to solve the problem of low detection efficiency of inorganic ceramic flat membranes or supports in the prior art, the present invention discloses a detection device for inorganic ceramic diaphragms, the detection device comprising a water tank, a left-end sealed air intake assembly, a right-end sealed assembly and a propulsion assembly; the left-end sealed air intake assembly is installed in the water tank, and has a gas passage for airflow; the right-end sealed assembly is arranged opposite to the left-end sealed air intake assembly, and a part of it passes through the side wall of the water tank and extends to the outside of the water tank; the propulsion assembly is arranged on the outside of the water tank opposite to the right-end sealed assembly, and is connected to the part of the right-end sealed assembly extending to the outside of the water tank. The present invention provides a detection device for inorganic ceramic diaphragms, which directly omits the time of waiting for glue to solidify, shortens the detection preparation cycle, greatly improves the detection efficiency, and greatly speeds up the speed of new product development.

Description

Technical Field

[0001] The invention relates to a general semi-permeable membrane separation method or equipment, and in particular to a detection device for an inorganic ceramic membrane. Background Art

[0002] Inorganic ceramic flat membranes are mainly made of inorganic ceramic materials such as aluminum oxide, zirconium oxide, silicon carbide, titanium oxide and silicon oxide of different specifications as the support body (substrate), and are formed by surface coating (membrane layer) and high-temperature firing. The surface of the inorganic ceramic flat membrane is densely covered with micropores, and the pore size specification range is between 50 nanometers and 5 microns. According to the different molecular diameters of the penetrating substances within a certain membrane pore size range, the permeability is different. The pressure difference on both sides of the membrane is the driving force (positive pressure or negative pressure), and the membrane is the filter medium. Under a certain pressure, when the feed liquid flows through the membrane surface, only water, inorganic salts, and small molecules are allowed to pass through the membrane, while macromolecules such as suspended matter, colloids and microorganisms in the water are prevented from passing through, thereby achieving filtration separation. Because inorganic ceramic flat membranes have many advantages such as high separation efficiency, stable effect, good chemical stability, acid and alkali resistance, organic solvent resistance, bacteria resistance, high temperature resistance, pollution resistance, high mechanical strength, good regeneration performance, simple separation process, low energy consumption, easy operation and maintenance, and long service life, they have been successfully applied to many fields such as rural sewage, urban sewage, factory sewage, industrial wastewater, printing and dyeing wastewater, coal mine wastewater, etc., and can be used for separation, clarification, concentration, sterilization, desalination, etc. in the process.

[0003] In the prior art, after the sintering of the support body and the inorganic ceramic flat membrane is completed, a device is required to detect whether there are cracks on the membrane plate, whether the pore size of the membrane layer is uniform, whether there are large bubbles in the membrane layer and other defects. Taking the support body test as an example, the two ends of the support body are first cut flush, and then the water collection tanks are installed at both ends. Then, professional glue dispensers are required to use special liquid glue to evenly fill the gap between the end of the support body and the water collection tank. The number of fillings is 1 to 2 times. After one end is filled, it is placed vertically and statically for 1 to 2 days. After it is completely cured, fill the other end with special liquid glue, and continue to place it vertically and statically for 1 to 2 days. After the water collection tanks are installed on both ends of the support body and the glue is cured, compressed air can be introduced through the water outlet of the water collection tank, and the membrane layer can be placed in water for defect detection. Similarly, inorganic ceramic flat membranes also use a similar method for defect detection.

[0004] However, it takes at least 2 to 4 days from the installation of an inorganic ceramic flat membrane or support to the complete curing of the glue at both ends of the membrane, which may also lead to too low detection efficiency of the support or inorganic ceramic flat membrane. Summary of the invention

[0005] In order to solve the problem of low detection efficiency of inorganic ceramic flat membranes or supports in the prior art, the present invention provides a detection device for an inorganic ceramic membrane, which directly omits the time for waiting for glue to solidify, shortens the detection preparation cycle, greatly improves the detection efficiency, and greatly accelerates the speed of new product development.

[0006] The technical solution adopted by the present invention is:

[0007] The detection device of the inorganic ceramic diaphragm is characterized in that the detection device comprises:

[0008] A water tank, the top surface of which is open;

[0009] A left-end sealed air intake assembly, the left-end sealed air intake assembly is installed in the water tank and has a gas passage for air flow;

[0010] A right end sealing assembly, the right end sealing assembly is arranged opposite to the left end sealing air intake assembly, a portion of which passes through the side wall of the water tank and extends to the outside of the water tank;

[0011] A propulsion assembly, the propulsion assembly being disposed on the outside of the water tank opposite to the right end sealing assembly and connected to a portion of the right end sealing assembly extending to the outside of the water tank;

[0012] During the inspection, the left and right ends of the inorganic ceramic diaphragm are clamped by the left-end sealing air intake assembly and the right-end sealing assembly respectively, and are submerged below the liquid level in the water tank; the thrust of the propulsion assembly causes the left-end sealing air intake assembly and the right-end sealing assembly to partially deform and wrap the left and right ends of the inorganic ceramic diaphragm to achieve sealing; the gas injected into the inorganic ceramic diaphragm from the gas passage is observed to detect the bubbles on the inorganic ceramic diaphragm.

[0013] Furthermore, the left end sealed air intake assembly comprises:

[0014] A left end seal, wherein a groove is provided on one side of the left end seal facing the side wall of the water tank in a direction parallel to the bottom of the water tank; along the groove width direction of the groove, the cross section of the groove is in an isosceles trapezoidal shape, and the groove bottom width of the groove is smaller than the open groove top width; an air cavity is provided on the other side of the left end seal opposite to the side where the groove is located; an air channel is provided between the air cavity and the groove;

[0015] A left-end air intake plate, the left-end air intake plate is installed on one side of the air cavity, and the air cavity is sealed after being connected with the left-end seal; a compressed air interface is arranged on the left-end air intake plate; the compressed air interface is in conduction with the air cavity;

[0016] The sealing sleeve is made of a deformable flexible material, adapted to the groove and insertable into the groove; the sealing sleeve has a through installation cavity; the installation cavity is adapted to the inorganic ceramic diaphragm;

[0017] Among them, the compressed air interface, the air cavity, the airway, the groove and the installation cavity are connected to form a gas passage for air flow; after the left end of the inorganic ceramic membrane is put on the installation cavity, it is inserted into the groove, and after being squeezed and deformed by the inner wall of the groove, a wrapping seal is achieved.

[0018] Furthermore, the left end sealed air intake assembly comprises:

[0019] A first locking slider, wherein the first locking slider has a flat plate connecting member; the flat plate connecting member is arranged in a direction substantially parallel to the left-end air intake plate, and has a first flange plate on a side thereof facing the left-end air intake plate;

[0020] A first clamp;

[0021] The left-end air intake plate has a second flange on one side facing the flat plate connector; the second flange cooperates with the first flange and is fixed by the first clamp to achieve connection between the left-end air intake plate and the flat plate connector.

[0022] Furthermore, the left end sealed air intake assembly comprises:

[0023] A locking slide rail, wherein the locking slide rail is installed in the water tank;

[0024] Among them, the first locking slider is arranged on the locking guide rail and can slide back and forth along the length direction of the locking guide rail; the first locking slider is also provided with a locking bolt, and the locking bolt is screwed to pass through the first locking slider and press against the locking slide rail, so that the position of the first locking slider on the locking guide rail remains fixed.

[0025] Furthermore, the left end sealed air intake assembly comprises:

[0026] The second locking slider is installed on the locking slide rail, adjacent to the left end seal; the second locking slider has a support member, the top end of the support member can contact with the inorganic ceramic diaphragm to support the inorganic ceramic diaphragm.

[0027] Furthermore, the sealing sleeve is provided with an air passage along the through direction of the installation cavity; the size of the air passage is smaller than the size of the installation cavity, and the air passage is adjacent to the bottom of the groove when installed; and a plurality of tie rods are formed in the air passage along its thickness direction.

[0028] Furthermore, the right end sealing assembly comprises:

[0029] A right end seal, wherein a side of the right end seal facing the left end sealed air intake assembly is provided with a concave cavity in a direction parallel to the bottom surface of the water tank;

[0030] A sealing block, which is made of a deformable flexible material and is embedded in the concave cavity;

[0031] A push rod, which is inserted into the side wall of the water tank in a direction substantially parallel to the bottom of the water tank and slides relatively with the side wall of the water tank; one end of the push rod extends outside the water tank, and the other end of the push rod is connected to the right end seal;

[0032] A right end guide block, the right end guide block is mounted on a surface of the right end seal facing the left end seal air intake assembly; a working window is provided on the right end guide block in a direction parallel to the bottom surface of the water tank, and the size of the working window matches the size of the inorganic ceramic diaphragm;

[0033] The detection is that the right end of the inorganic ceramic membrane is inserted into the working window and contacts the sealing block; after the sealing block is squeezed and deformed, it wraps and seals the right end of the inorganic ceramic membrane.

[0034] Furthermore, the right end sealing assembly also includes:

[0035] A bearing sleeve, the bearing sleeve being mounted on a side wall of the water tank;

[0036] A right end connecting plate, the right end connecting plate is arranged between the right end seal and the push rod, one side of the right end connecting plate is connected to the right end seal, and the other side of the right end connecting plate has a third flange;

[0037] A second clamp;

[0038] Among them, the push rod is fitted and inserted into the bearing sleeve and can slide relative to the bearing sleeve; one end of the push rod is in the shape of a matching flange with the third flange and is fixed by the second clamp to realize the connection between the push rod and the right end seal.

[0039] Furthermore, a portion of the right-end guide block corresponding to the lower edge of the guide window extends outwardly in a direction parallel to the bottom of the water tank to form a bearing portion.

[0040] Furthermore, the propulsion assembly comprises

[0041] A cylinder frame, wherein the cylinder frame is arranged outside the water tank;

[0042] A cylinder is mounted on the cylinder frame, and a piston rod of the cylinder is connected to the portion of the right end sealing assembly extending to the outside of the water tank.

[0043] The beneficial effects of the present invention are:

[0044] In order to solve the problem of low detection efficiency of inorganic ceramic flat membranes or supports in the prior art, the present invention provides a detection device for an inorganic ceramic diaphragm. The detection device includes a water tank, a left-end sealed air intake assembly, a right-end sealed assembly and a propulsion assembly. During detection, the left and right ends of the inorganic ceramic diaphragm are clamped by the left-end sealed air intake assembly and the right-end sealed assembly, respectively, and are submerged below the liquid level in the water tank; the thrust of the propulsion assembly causes the left-end sealed air intake assembly and the right-end sealed assembly to partially deform and wrap the left and right ends of the inorganic ceramic diaphragm to achieve sealing; the gas injected into the inorganic ceramic diaphragm from the gas passage is observed to detect bubbles on the inorganic ceramic diaphragm. The detection device of the present invention has the following advantages:

[0045] 1. Compared with the common method of detecting inorganic ceramic flat membranes, the inorganic ceramic flat membrane or the support body can be directly detected by the detection device of the present invention after sintering, and the detection result can be directly obtained, which directly omits the time of waiting for the glue to solidify, shortens the detection preparation cycle, greatly improves the detection efficiency, and greatly speeds up the speed of new product development.

[0046] 2. The equipment is easy to operate and can be operated by ordinary careful workers. After the inorganic ceramic flat membrane is installed, the cylinder is pressed and sealed, and the intake pressure is adjusted to allow air to enter. The ordinary method requires training of professional dispensing personnel, requiring uniform force and uniform dispensing, no excess glue, no leakage, and full and beautiful appearance, which is relatively difficult.

[0047] 3. The sealing method is more reliable. The left end is squeezed and deformed by the sealing sleeve, with a Shore hardness of 50 to 70. At the same time, it is squeezed and fitted to the membrane surface by two forces from the end face and the side, which provides double sealing insurance. The right end is squeezed and deformed by the sealing block, with a Shore hardness of 40 to 60, which completely wraps the right end face and a small part of the membrane surface. The cylinder thrust is stable, and the pressure is between 0.4 and 0.5 MPa. Compared with ordinary manual glue sealing, if the worker leaks glue or less glue, there will be sealing leakage, the water collection tank or the membrane surface is not cleaned, and after the glue is cured, degumming will occur during the air intake detection process.

[0048] 4. In small batch production, each inorganic ceramic flat membrane or support can be inspected for defects. The quality of the membrane after inspection is absolutely guaranteed, and the qualified rate of the produced ceramic membrane can reach 100%; while the ordinary dispensing inspection method cannot be used for small batch full inspection.

[0049] 5. By adjusting different air inlet pressures, various functional tests can be performed on the inorganic ceramic flat membrane or support. When the pressure is between 0.1 and 0.2 MPa, the uniformity of the ceramic membrane pores can be tested; when the pressure is between 0.2 and 0.3 MPa, the ceramic membrane can be tested for sand holes or hidden cracks; when the pressure is between 0.4 and 0.8 MPa, the strength test can be performed to test how much pressure the ceramic membrane can withstand. The ordinary dispensing test method requires repeated insertion, disassembly, and manual holding of the membrane, which is somewhat dangerous.

[0050] 6. During the inspection process, the contact positions are all made of soft rubber / silicone material, which will not cause any damage to the inorganic ceramic flat membrane or support. The intact inorganic ceramic flat membrane or support can continue to be used in production, and the defective inorganic ceramic flat membrane can be recycled and repaired before re-inspection. The ordinary glue dispensing inspection method is a one-time inspection. The inorganic ceramic flat membrane or support after glue dispensing cannot be recycled and reused in production after inspection. There is also a small probability that the edges of the inorganic ceramic flat membrane or support will be damaged when installing the water collection tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0052] Figure 1 Schematic diagram of the top view of the detection device of the inorganic ceramic diaphragm in the embodiment.

[0053] Figure 2 for Figure 1 AA section view.

[0054] Figure 3 for Figure 2 A partial enlarged schematic diagram of point B in the middle.

[0055] Figure 4 for Figure 2 A partial enlarged schematic diagram of point C in the middle.

[0056] Figure 5 for Figure 2 A partial enlarged schematic diagram of point D in the middle.

[0057] Figure 6 Schematic diagram of the three-dimensional structure of the sealing sleeve in the embodiment.

[0058] Figure 7 FIG. 4 is a front view of the sealing sleeve in the embodiment.

[0059] Figure 8 for Figure 7 EE section view.

[0060] Fig. 9 for Figure 7 FF section view.

[0061] Fig.10 Schematic diagram of detection principle in the embodiment. DETAILED DESCRIPTION

[0062] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0063] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0064] The disclosure below provides many different embodiments or examples to realize different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention.

[0065] The embodiments of the invention are described in detail below with reference to the accompanying drawings.

[0066] In the prior art, after the sintering of the support body and the inorganic ceramic flat membrane is completed, a device is required to detect whether there are cracks on the membrane plate, whether the pore size of the membrane layer is uniform, whether there are large bubbles in the membrane layer and other defects. Taking the support body test as an example, the two ends of the support body are first cut flush, and then the water collection tanks are installed at both ends. Then, professional glue dispensers are required to use special liquid glue to evenly fill the gap between the end of the support body and the water collection tank. The number of fillings is 1 to 2 times. After one end is filled, it is placed vertically and statically for 1 to 2 days. After it is completely cured, fill the other end with special liquid glue, and continue to place it vertically and statically for 1 to 2 days. After the water collection tanks are installed on both ends of the support body and the glue is cured, compressed air can be introduced through the water outlet of the water collection tank, and the membrane layer can be placed in water for defect detection. Similarly, inorganic ceramic flat membranes also use a similar method for defect detection.

[0067] However, it takes at least 2 to 4 days for an inorganic ceramic flat membrane or support to be completely cured from the installation of the water collection tank to the complete curing of the glue at both ends of the membrane, which also leads to the low detection efficiency of the support or inorganic ceramic flat membrane. In addition, since the inorganic ceramic flat membrane and the support are in the shape of a strip, the edges have a rounded transition, and the non-circular shape is also an unconventional shape that is convenient for sealing, it is very difficult to use conventional sealing methods.

[0068] In order to solve the problem of low detection efficiency of inorganic ceramic flat membranes or supports in the prior art, a detection device for an inorganic ceramic membrane is provided in this embodiment. The inorganic ceramic membrane includes but is not limited to an inorganic ceramic flat membrane and a flat membrane support. For ease of description, the detection device is used to perform defect testing on an inorganic ceramic flat membrane as an example for description.

[0069] As attached Figures 1 to 10 As shown, the detection device includes a working frame 1, a water tank 2, a left-end sealing air intake assembly 3, a right-end sealing assembly 4 and a propulsion assembly 5.

[0070] Specifically, the work frame 1 is used as the installation base of the detection device. The water tank 2, the left end sealing air intake assembly 3, the right end sealing assembly 4 and the propulsion assembly 5 are all arranged on the work frame 1. The work frame 1 has a certain height, such as 1-1.2m, so that the operator can install, maintain and move other components as a whole, as well as install and test the inorganic ceramic flat membrane.

[0071] The water tank 2 is installed on the top surface of the work frame 1. The water tank 2 is in a rectangular shape, with an open top and a certain depth inside, such as 30-50 cm, so as to store an appropriate amount of clean water. After the inorganic ceramic flat membrane 1' is immersed in clean water, the defect detection is performed by observing the bubble state of the inorganic ceramic flat membrane. Preferably, the side wall of the water tank 2 is made of transparent materials such as transparent glass, transparent PMMA, etc., so as to facilitate observation from the side.

[0072] The left end sealed air intake assembly 3 is installed in the water tank 2 and is used to seal the left end of the inorganic ceramic flat membrane 1' and inject gas into the inorganic ceramic flat membrane 1'. The left end sealed air intake assembly 3 includes a locking guide rail 31, a first locking block 32, a left end air intake plate 33, a left end seal 34, a conical sealing sleeve 35, a first clamp 36, a sealing pad 37 and a second locking slider 38.

[0073] Specifically, the locking rail 31 is installed on the inner bottom or inner wall of the water tank 2. In this embodiment, the locking rail 31 is installed on the inner bottom of the water tank 2 as an example for description.

[0074] The first locking slider 32 is arranged on the locking guide rail 31 and can slide back and forth along the length direction of the locking guide rail 31. A locking bolt is arranged on the first locking slider 32. After the locking bolt is screwed through the first locking slider 32 and pressed against the locking guide rail 31, the position of the first locking slider 32 on the locking guide rail 31 is kept fixed. Through the combination of the locking guide rail 31 and the first locking slider 32, it is possible to adapt to the detection of inorganic ceramic flat membranes 1' of different lengths.

[0075] A flat plate connector 321 is provided on the first locking slider 32. The plate surface of the flat plate connector 321 is provided perpendicular to the length direction of the locking guide rail 31 and perpendicular to the bottom surface of the water tank 2. A first flange 322 is provided at the center position of the upper portion of one surface of the flat plate connector 321.

[0076] The left air inlet plate 33 is arranged in a direction parallel to the flat plate connecting member 321. In this example, the rectangular left air inlet plate 33 is used as an example for explanation, and its length is greater than the width of the inorganic ceramic flat plate membrane 1', and its width is much greater than the thickness of the inorganic ceramic flat plate membrane 1'. A second flange 331 is arranged at the center of one side of the left air inlet plate 33 facing the flat plate connecting member 321. The second flange 331 cooperates with the first flange 322 and is fixed by the first clamp 36 to realize the connection between the left air inlet plate 33 and the flat plate connecting member 321.

[0077] A compressed air interface 332 is also provided on one side of the flat plate connector 321 where the second flange 331 is located. After the compressed air interface 332 is connected to the air supply system, the gas for testing is introduced.

[0078] The left end seal 34 is arranged on a side of the left end air intake plate 33 away from the flat connecting member 321 in a direction parallel to the left end air intake plate 33. In this example, a rectangular left end seal 34 is used as an example for explanation, and its length and width dimensions are consistent with those of the left end air intake plate 33, and its thickness is much greater than that of the left end air intake plate 33. When the left end seal 34 and the left end air intake plate 33 are assembled, the length directions of the two coincide.

[0079] A rectangular air cavity 341 is provided in the middle of a side of the left end seal 34 facing the left end air inlet plate 33 along its length direction. The left end seal 34 and the left end air inlet plate 33 are combined to form a sealing structure. That is, the left end air inlet plate 33 can seal the air cavity 341, and the compressed air interface 332 is connected to the air cavity 341 to form a gas buffer area.

[0080] A groove 342 is provided in the middle of the other side of the left end seal 34 opposite to the side where the air cavity 341 is located, along the length direction thereof. Along the thickness direction of the left end seal 34, the cross section of the groove 342 is in the shape of an isosceles trapezoid. The larger end of the groove 342 faces outward, forming a structure that is larger outside and smaller inside, that is, the groove bottom width of the groove 342 is smaller than the open groove top width of the groove 342. And the groove bottom size of the groove 342 is larger than the end size of the inorganic ceramic flat membrane 1'. An airway 343 is provided in the middle of the groove bottom of the groove 342, and the airway 343 passes through the air cavity 341 to transfer the gas from the air cavity 341 to the groove area of ​​the groove 342. The airway 343 is a single circular hole, a square hole, a long hole, or a plurality of holes arranged in a straight line. When the airway 343 is a long hole or a plurality of holes arranged in a straight line, its setting direction is along the length direction of the groove bottom of the groove 342.

[0081] In order to improve the contact sealing performance between the left end seal 34 and the left end air intake plate 33 , a sealing gasket 37 , such as a silicone plate sealing gasket, is provided between the edge areas where the left end seal 34 and the left end air intake plate 33 contact.

[0082] The sealing sleeve 35 is inserted and installed in the groove 342. The sealing sleeve 35 is made of a deformable flexible material such as rubber or fluororubber, with a Shore hardness of 50 to 70. The shape of the sealing sleeve 35 is similar to that of the groove 342, that is, along the thickness direction of the left end seal 34, the cross-section of the sealing sleeve 35 is also an isosceles trapezoid. The size of the sealing sleeve 35 is consistent with or slightly larger than the size of the groove 342, so that the sealing sleeve 35 can be firmly held in the groove 342, and a contact seal is formed between its outer wall and the inner wall of the groove 342. Along the groove depth direction of the groove 342, the groove depth of the groove 342 is less than the thickness of the sealing sleeve 35.

[0083] Inside the sealing sleeve 35, a continuous installation cavity 351 and a gas passage 352 are provided along the thickness direction. The shape of the installation cavity 351 is similar to the shape of the end cross section of the inorganic ceramic flat membrane 1', and its size is consistent with or slightly smaller than the size of the end cross section of the inorganic ceramic flat membrane 1', so that the left end of the inorganic ceramic flat membrane 1' can be inserted into the installation cavity 351 to form a contact seal. The size of the gas passage 352 is smaller than the size of the installation cavity 351, and a limiting step is formed at the transition between the two, and the left end face of the inorganic ceramic flat membrane 1' can abut against the limiting step.

[0084] Along the width direction of the air passage 352 , a plurality of tie bars 353 of the same material are formed in the air passage 352 to prevent the sealing sleeve 35 from being partially displaced or severely deformed when inserted into the groove 342 and blocking the air passage 352 .

[0085] The second locking slider 38 is disposed on the locking guide rail 31 and is located near the left end seal 34. The second locking slider 38 can slide back and forth along the length direction of the locking guide rail 31. A locking bolt is disposed on the second locking slider 38. After the locking bolt is screwed through the second locking slider 32 and pressed against the locking guide rail 31, the position of the second locking slider 38 on the locking guide rail 31 remains fixed.

[0086] A support member 381 is provided on the second locking slider 38 , and the top of the support member 381 can contact with the inorganic ceramic flat membrane 1 ′ to hold the inorganic ceramic flat membrane 1 ′ and provide support and guidance for the movement of the inorganic ceramic flat membrane 1 ′.

[0087] When the left end of the inorganic ceramic flat membrane 1' needs to be sealed and fixed, first install the sealing sleeve 35 to the left end of the inorganic ceramic flat membrane 1', and then insert the whole into the groove 342. Apply a certain thrust to the inorganic ceramic flat membrane 1' so that the left end of the inorganic ceramic flat membrane 1' moves further toward the left air inlet plate 33. The sealing sleeve 35 is squeezed by the inner wall of the groove 342 and deformed, further clamping the left end of the inorganic ceramic flat membrane 1' to ensure the sealing effect. The test gas is connected from the compressed air interface 332, enters the air cavity 341, and enters the inorganic ceramic flat membrane 1' through the air channel 343 and the air passage 352.

[0088] The right end sealing assembly 4 is opposite to the left end sealing air intake assembly 3 and is installed on the side wall of the water tank 2. The right end sealing assembly 4 includes a push rod 41, a bearing sleeve 42, a right end connecting plate 43, a right end seal 44, a seal block 45, a right end guide block 46 and a second clamp 46.

[0089] The bearing sleeve 42 is inserted into the side wall of the water tank 2. The axial center of the bearing sleeve 42 coincides with the axial center of the second flange 331. One end of the bearing sleeve 42 located inside the water tank 2 has an annular folded edge extending outward, and a sealing ring 421 is arranged between the annular folded edge and the inner wall of the water tank 2. The outer wall of the bearing sleeve 42 located outside the water tank 2 is provided with a thread, and a locking nut 422 is installed to achieve the installation of the bearing sleeve 42 and the sealing between the bearing sleeve 42 and the side wall of the water tank 2. An O-ring 423 is installed on the inner wall of the bearing sleeve 42.

[0090] The push rod 41 is matched and penetrated in the bearing sleeve 42, and the two form a sliding contact seal. The end of the push rod 41 located inside the water tank 2 is in a flange shape.

[0091] The right end connecting plate 43 is arranged near the end of the push rod 41 located inside the water tank 2. A third flange 431 is provided at the central position of one side of the right end connecting plate 43 facing the push rod 41, and the third flange 431 cooperates with the adjacent end of the push rod 41 and is fixed by a second clamp 47 to achieve the connection between the right end connecting plate 43 and the push rod 41.

[0092] The right end seal 44 is mounted on the other side of the right end connecting plate 43. The right end seal 44 is in a rectangular parallelepiped shape, and its length direction is parallel to the bottom surface of the water tank 2. A rectangular parallelepiped cavity 441 is provided along its length direction on the side of the right end seal 44 away from the right end connecting plate 43. The size of the cavity 441 is larger than the size of the right end of the inorganic ceramic flat membrane 1'.

[0093] The end-sealing block 45 is installed in the concave cavity 441. The end-sealing block 45 is made of a deformable flexible material such as silicone rubber, with a Shore hardness of 40-60, which is less than the sealing sleeve 35. After the right end of the inorganic ceramic flat membrane 1' contacts the end-sealing block 45, the end-sealing block 45 deforms and wraps the right end of the inorganic ceramic flat membrane 1' to achieve sealing.

[0094] The right end guide block 46 is installed on the side of the right end seal 44 away from the right end connecting plate 43, and can support the right end of the inorganic ceramic flat membrane 1'. A guide window 461 is provided in the middle of the right end guide block 46. The size of the guide window 461 matches the size of the right end of the inorganic ceramic flat membrane 1', and the inorganic ceramic flat membrane 1' can be inserted and supported. The part of the right end guide block 46 corresponding to the lower edge of the guide window 461 extends outward in a direction parallel to the bottom of the water tank 2 to form a bearing portion 462 to increase the support area.

[0095] The propulsion assembly 5 is arranged on the outer side of the water tank 2 opposite to the right end sealing assembly 4. The propulsion assembly 5 includes a cylinder frame 51 and a cylinder 52.

[0096] The cylinder frame 51 is mounted on the working frame 1. A reinforcing rib is provided at the connection between the cylinder frame 51 and the working frame 1 to improve the structural stability of the cylinder frame 51.

[0097] The cylinder 52 is mounted on the cylinder frame 51. The piston rod of the cylinder 52 is connected to the end of the push rod 41 located outside the water tank 2, and the axial movement center of the cylinder 52 coincides with the axial center of the push rod 41.

[0098] When the detection device in this embodiment is used to detect the inorganic ceramic flat membrane 1', the steps are as follows:

[0099] Step S1, water is filled into the water tank 2, and the inorganic ceramic flat membrane 1' is installed.

[0100] Add tap water or pure water to the water tank 2, and control the water level between 60% and 90% to submerge the left end seal 34 and the right end seal 44. Put the sealing sleeve 35 on the left end of the inorganic ceramic flat membrane 1', support the inorganic ceramic flat membrane 1' with your hand, place the right end flat in the groove of the right end guide block 10, and place the left end flat on the support 381, align the sealing sleeve 35 on the inorganic ceramic flat membrane 1' with the groove 342, and push it in at least 5% to prevent the cylinder 52 from deviating and damaging the membrane during the process of pushing the inorganic ceramic flat membrane 1'.

[0101] Step S2, advancing extrusion sealing.

[0102] After the inorganic ceramic flat membrane 1' is installed, the cylinder 52 pushes the push rod 41, and the push rod 41 pushes the right end connecting plate 43 and the right end seal 44, and the right end seal 44 moves to the left, and the internal end seal block 45 contacts and pushes the inorganic ceramic flat membrane 1', and pushes the inorganic ceramic flat membrane 1' and the sealing sleeve 35 into the groove 342 of the left end seal 34 to fit together. After the inorganic ceramic flat membrane 1' is in contact, the cylinder 52 continues to apply pressure, squeezes the sealing sleeve 35 and the end seal block 45 to deform, and seals the two ends of the inorganic ceramic flat membrane 1'. During the pushing process, it is necessary to keep the center of the cylinder 52, the center of the push rod 41, the left end seal 34, the right end seal 44 and the inorganic ceramic flat membrane 1'd on the same horizontal line and the same center, so as to avoid any misalignment that will damage the inorganic ceramic flat membrane 13 or reduce the sealing effect.

[0103] Step S3, adjust the test pressure, perform ventilation test, and observe the bubble situation.

[0104] Adjust the appropriate compressed air pressure, and the air is connected from the compressed air interface 332, enters the air cavity 341, passes through the air channel 343 and the air passage 352, enters the water collection channel in the inorganic ceramic flat membrane 1', and then passes through the pores of the inorganic ceramic flat membrane 1' uniformly, generating countless small bubbles in the water, and observe whether the small bubbles are uneven. If the bubbles in a certain area are too large or too small, it means that the pore size in this area is too large or too small; if there are continuous large bubbles on a certain line, it means that the line is cracked; if there are continuous large bubbles at a certain point, it means that there are trachoma or other defects at that point.

[0105] Step S4, disassembly and assembly of the membrane plate and shutdown.

[0106] After the test is completed, the compressed air intake is closed, the cylinder 52 is ventilated and pushed to the right, the right end seal moves to the right, the inorganic ceramic flat membrane 1' is loosened, and the inorganic ceramic flat membrane 1' is manually taken out from the groove 342 of the left end seal 34, and the sealing sleeve 35 is removed to complete the test.

[0107] Compared with the prior art, the detection device and detection method in this embodiment have the following beneficial effects:

[0108] 1. Compared with the common method of detecting inorganic ceramic flat membranes, the inorganic ceramic flat membrane can be directly detected by the detection device in this embodiment after sintering, and the detection result can be directly obtained, which directly omits the time of waiting for the glue to solidify, shortens the detection preparation cycle, greatly improves the detection efficiency, and greatly speeds up the speed of new product development.

[0109] 2. The equipment is easy to operate and can be operated by ordinary careful workers. After the inorganic ceramic flat membrane is installed, the cylinder is pressed and sealed, and the intake pressure is adjusted to allow air to enter. The ordinary method requires training of professional dispensing personnel, requiring uniform force and uniform dispensing, no excess glue, no leakage, and full and beautiful appearance, which is relatively difficult.

[0110] 3. The sealing method is more reliable. The left end is squeezed and deformed by the sealing sleeve, with a Shore hardness of 50 to 70. At the same time, it is squeezed and fitted to the membrane surface by two forces from the end face and the side, which provides double sealing insurance. The right end is squeezed and deformed by the sealing block, with a Shore hardness of 40 to 60, which completely wraps the right end face and a small part of the membrane surface. The cylinder thrust is stable, and the pressure is between 0.4 and 0.5 MPa. Compared with ordinary manual glue sealing, if the worker leaks glue or less glue, there will be sealing leakage, the water collection tank or the membrane surface is not cleaned, and after the glue is cured, degumming will occur during the air intake detection process.

[0111] 4. In small batch production, each inorganic ceramic flat membrane can be inspected for defects. The quality of the membrane after inspection is absolutely guaranteed, and the qualified rate of the produced ceramic membrane can reach 100%; while the ordinary dispensing inspection method cannot be used for small batch full inspection.

[0112] 5. By adjusting different air inlet pressures, various functional tests can be performed on the inorganic ceramic flat membrane. When the pressure is between 0.1 and 0.2 MPa, the uniformity of the ceramic membrane pores can be tested; when the pressure is between 0.2 and 0.3 MPa, the ceramic membrane can be tested for sand holes or hidden cracks; when the pressure is between 0.4 and 0.8 MPa, the strength test can be performed to test how much pressure the ceramic membrane can withstand. The ordinary dispensing test method requires repeated insertion, disassembly, and manual holding of the membrane, which is somewhat dangerous.

[0113] 6. During the testing process, the contact points are made of soft rubber / silicone material, which will not cause any damage to the inorganic ceramic flat membrane. The intact inorganic ceramic flat membrane can continue to be used in production, and the defective inorganic ceramic flat membrane can be recycled and repaired before being tested again. The ordinary glue dispensing test method is a one-time test. The inorganic ceramic flat membrane after glue dispensing cannot be recycled and reused in production after testing. There is also a small probability that the edges of the inorganic ceramic flat membrane will be damaged when installing the water collection tank.

Claims

1. A detection device for an inorganic ceramic diaphragm, characterized in that: The detection device comprises: A water tank, the top surface of which is open; A left-end sealed air intake assembly, the left-end sealed air intake assembly is installed in the water tank and has a gas passage for air flow; A right end sealing assembly, the right end sealing assembly is arranged opposite to the left end sealing air intake assembly, a portion of which passes through the side wall of the water tank and extends to the outside of the water tank; A propulsion assembly, the propulsion assembly being disposed on the outside of the water tank opposite to the right end sealing assembly and connected to a portion of the right end sealing assembly extending to the outside of the water tank; Wherein, the left end sealed air intake assembly comprises: A left end seal, wherein a groove is provided on one side of the left end seal facing the side wall of the water tank in a direction parallel to the bottom of the water tank; along the groove width direction of the groove, the cross section of the groove is in an isosceles trapezoidal shape, and the groove bottom width of the groove is smaller than the open groove top width; an air cavity is provided on the other side of the left end seal opposite to the side where the groove is located; an air channel is provided between the air cavity and the groove; The sealing sleeve is made of a deformable flexible material, adapted to the groove and insertable into the groove; the sealing sleeve has a through installation cavity; the installation cavity is adapted to the inorganic ceramic diaphragm; The right end sealing assembly comprises: A right end seal, wherein a side of the right end seal facing the left end sealed air intake assembly is provided with a concave cavity in a direction parallel to the bottom surface of the water tank; A sealing block, which is made of a deformable flexible material and is embedded in the concave cavity; The propulsion assembly comprises: a cylinder, the piston rod of which is connected to the portion of the right end sealing assembly extending to the outside of the water tank; During the inspection, the left and right ends of the inorganic ceramic diaphragm are clamped by the left-end sealing air intake assembly and the right-end sealing assembly respectively, and are submerged below the liquid level in the water tank; the thrust of the propulsion assembly causes the left-end sealing air intake assembly and the right-end sealing assembly to partially deform and wrap the left and right ends of the inorganic ceramic diaphragm to achieve sealing; the gas injected into the inorganic ceramic diaphragm from the gas passage is observed to detect the bubbles on the inorganic ceramic diaphragm.

2. The detection device of the inorganic ceramic diaphragm according to claim 1, characterized in that: The left end sealed air intake assembly also includes: A left-end air intake plate, the left-end air intake plate is installed on one side of the air cavity, and the air cavity is sealed after being connected with the left-end seal; a compressed air interface is arranged on the left-end air intake plate; the compressed air interface is in conduction with the air cavity; Among them, the compressed air interface, the air cavity, the airway, the groove and the installation cavity are connected to form a gas passage for air flow; after the left end of the inorganic ceramic membrane is put on the installation cavity, it is inserted into the groove, and after being squeezed and deformed by the inner wall of the groove, a wrapping seal is achieved.

3. The detection device of the inorganic ceramic diaphragm according to claim 2, characterized in that: The left end sealed air intake assembly also includes: A first locking slider, wherein the first locking slider has a flat plate connecting member; the flat plate connecting member is arranged in a direction parallel to the left-end air intake plate, and has a first flange plate on a side thereof facing the left-end air intake plate; A first clamp; The left-end air intake plate has a second flange on one side facing the flat plate connector; the second flange cooperates with the first flange and is fixed by the first clamp to achieve connection between the left-end air intake plate and the flat plate connector.

4. The detection device of the inorganic ceramic diaphragm according to claim 3, characterized in that: The left end sealed air intake assembly also includes: A locking rail, wherein the locking rail is installed in the water tank; Among them, the first locking slider is arranged on the locking guide rail and can slide back and forth along the length direction of the locking guide rail; the first locking slider is also provided with a locking bolt, and the locking bolt is screwed to pass through the first locking slider and press against the locking guide rail, so that the position of the first locking slider on the locking guide rail remains fixed.

5. The detection device of the inorganic ceramic diaphragm according to claim 4, characterized in that: The left end sealed air intake assembly also includes: The second locking slider is installed on the locking guide rail, adjacent to the left end seal; the second locking slider has a support member, the top end of which can contact the inorganic ceramic diaphragm to support the inorganic ceramic diaphragm.

6. The detection device of the inorganic ceramic diaphragm according to claim 2, 3, 4 or 5, characterized in that: The sealing sleeve is also provided with an air passage along the through direction of the installation cavity; the size of the air passage is smaller than the size of the installation cavity, and the air passage is adjacent to the bottom of the groove when installed; and a plurality of tension bars are formed in the air passage along its thickness direction.

7. The detection device for an inorganic ceramic diaphragm according to any one of claims 1 to 5, characterized in that: The right end sealing assembly also includes: A push rod, which is arranged on the side wall of the water tank in a direction parallel to the bottom of the water tank and slides relatively with the side wall of the water tank; one end of the push rod extends outside the water tank, and the other end of the push rod is connected to the right end seal; A right end guide block, the right end guide block is mounted on a surface of the right end seal facing the left end seal air intake assembly; a guide window is provided on the right end guide block in a direction parallel to the bottom surface of the water tank, and the size of the guide window matches the size of the inorganic ceramic diaphragm; During the detection, the right end of the inorganic ceramic membrane is inserted into the guide window and contacts the end-capping block; after the end-capping block is squeezed and deformed, it wraps and seals the right end of the inorganic ceramic membrane.

8. The detection device of the inorganic ceramic diaphragm according to claim 7, characterized in that: The right end sealing assembly also includes: A bearing sleeve, the bearing sleeve being mounted on a side wall of the water tank; A right end connecting plate, the right end connecting plate is arranged between the right end seal and the push rod, one side of the right end connecting plate is connected to the right end seal, and the other side of the right end connecting plate has a third flange; A second clamp; Among them, the push rod is fitted and inserted into the bearing sleeve and can slide relative to the bearing sleeve; one end of the push rod is in the shape of a matching flange with the third flange and is fixed by the second clamp to realize the connection between the push rod and the right end seal.

9. The detection device of the inorganic ceramic diaphragm according to claim 7, characterized in that: The portion of the right end guide block corresponding to the lower edge of the guide window extends outwardly in a direction parallel to the bottom of the water tank to form a bearing portion.

10. The detection device of the inorganic ceramic diaphragm according to any one of claims 1 to 5, 8 and 9, characterized in that: The propulsion assembly further comprises: A cylinder frame is arranged outside the water tank; and the cylinder is installed on the cylinder frame.

Images