Permeability testing device for porous material

Abstract

The invention discloses a porous material permeability testing device, and belongs to the technical field of material permeability testing, the porous material permeability testing device comprises a box body, pressing mechanisms are arranged at two ends of a bottom frame, sponges are movably arranged on the pressing mechanisms, a sound wave generator is mounted on the bottom frame, and the upper part of the sound wave generator is connected with a supporting seat; a test piece is arranged on the supporting seat, and the sponge is connected to the test piece in a pressing mode. A plurality of liquid outlets capable of moving downwards are formed, the liquid outlets make contact with sponge, penetrating fluid is adsorbed through the sponge, splashing and waste of the penetrating fluid can be avoided, cleanliness of the interior of the equipment is guaranteed, and the follow-up cleaning difficulty is reduced; the penetrating fluid in the sponge is immersed into the test piece, so that on one hand, uniform immersion of the test piece can be realized, on the other hand, displacement of the test piece can be avoided through friction force between the sponge and the test piece, and the stability of the test piece is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of material permeability testing, and in particular relates to a porous material permeability testing device. Background Art

[0002] In the production process of porous materials, permeability is a key quality indicator. Different application scenarios have different requirements for the permeability of porous materials. Taking concrete blocks in building materials as an example, through permeability testing, its waterproof performance can be evaluated, and blocks with different permeabilities can be graded and applied to different building parts. The Chinese patent announcement number CN217765990U discloses a penetration detection device, including a detection box, a guide groove is opened at the bottom of the inner wall of the detection box, a bearing detection platform is fixedly arranged in the middle of the guide groove, and an acoustic wave transmitter is fixedly installed inside the bearing detection platform. A spray ring pipe facing the test platform is fixedly arranged on the top of the inner wall of the test box, a plurality of evenly distributed spray heads are fixedly installed on the bottom of the spray ring pipe, and a penetrant storage tank is fixedly installed on the top of the test box. The invention adopts a sealed spraying method of penetrant to make the penetrant adhere to the surface of the workpiece, which can improve the safety of the staff's operation and reduce the probability of burns. An acoustic wave generator is installed in the test platform, which can use acoustic waves to make the workpiece and the attached penetrant slightly vibrate after spraying the penetrant, thereby accelerating the penetration, thereby increasing the waiting time of static penetration and improving the efficiency of penetration detection.

[0003] The problem with the prior art is that the penetrant is attached to the surface of the workpiece by spraying the penetrant. During the spraying process, the penetrant splashes, which can make the penetrant evenly attached to the surface of the workpiece, but it will cause a large amount of penetrant to be wasted. In addition, during the use of the acoustic wave generator, the stability of the workpiece cannot be guaranteed, which needs further improvement. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention provides a porous material permeability testing device, which has the advantages of ensuring uniform immersion while avoiding waste of penetrant and improving the stability of workpiece testing, solving the problems of waste of penetrant and inability to ensure workpiece stability in existing equipment.

[0005] The present invention is implemented as follows: a porous material permeability testing device comprises a box body, a liquid storage tank is arranged on the top of the box body, one end of the liquid storage tank is connected to a plurality of liquid outlets, a base frame is arranged inside the box body, downward pressing mechanisms are arranged at both ends of the base frame, a sponge is movably arranged on the downward pressing mechanism, a sound wave generator is installed on the base frame, a support seat is connected to the upper part of the sound wave generator, a test piece is arranged on the support seat, and the sponge is pressed onto the test piece.

[0006] As a preferred embodiment of the present invention, a liquid inlet and a booster are respectively provided on both sides of the upper end of the liquid storage tank, and a conduit is connected to one side of the lower end of the liquid storage tank. The conduit is penetrated and arranged in the telescopic rod, and a first spring is sleeved on the body of the telescopic rod. The upper ends of the telescopic rod and the first spring are fixedly connected to the inner wall of the top of the box body, and the lower end is fixedly connected to a mounting frame, and a plurality of the liquid outlets are equidistantly arranged on the mounting frame.

[0007] As a preferred embodiment of the present invention, a plurality of guide grooves are equidistantly provided on the support seat, the ends of the plurality of guide grooves are interconnected, and one end of the support seat is connected to a waste discharge pipe.

[0008] As a preferred embodiment of the present invention, the pressing mechanism includes a motor and a connecting shaft, the connecting shaft is rotatably installed in the middle of the base frame, the motor is fixedly installed at one end of the base frame, both ends of the connecting shaft are fixedly connected with screw rods, and the motor is fixedly connected to one end of one of the screw rods.

[0009] As a preferred embodiment of the present invention, a screw sleeve is threadedly connected to the screw rod, and the screw sleeve is slidably connected to the inner wall of the base frame. Both sides of the screw sleeve are fixedly connected to limiting columns, the bottom of the limiting column is slidably connected to the guide rail, the guide rail is fixedly connected to the base frame, and a roller is rollingly connected inside the limiting column.

[0010] As a preferred embodiment of the present invention, lower support rods are hinged at both ends of the upper surface of the base frame, the upper ends of the lower support rods are hinged to upper support rods via hinge shafts, and the rollers are rotatably connected to the ends of the hinge shafts.

[0011] As a preferred embodiment of the present invention, one end of the upper support rod away from the lower support rod is hinged to a lifting frame, and the sponge is fixedly installed in the lifting frame.

[0012] At least two racks are installed on the bottom wall of the support seat, and the racks are respectively located on both sides of the sound wave generator;

[0013] As a preferred embodiment of the present invention, two fixing frames are provided on the upper side of the base frame, the fixing frames correspond to the racks one by one, and two first gears are rotatably connected to each fixing frame, and the two first gears are meshed with the racks;

[0014] The base frame is provided with a groove, the connecting shaft passes through the groove, a second gear is fixedly sleeved on the connecting shaft, the second gear is located in the groove, and the second gear is meshed with the first gear.

[0015] As a preferred embodiment of the present invention, a sliding groove is provided on the bottom wall of the support seat, the rack is slidably connected to the sliding groove, a second spring is provided in the sliding groove, one end of the second spring is fixedly connected to the end of the sliding groove, and the other end of the second spring is fixedly connected to the rack.

[0016] As a preferred embodiment of the present invention, the conduit passes through a pitch gap of the first spring, the weight of the mounting frame is greater than the elastic force of the first spring, and the conduit is an elastic hose.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention provides a plurality of liquid outlets that can be moved downward, so that the liquid outlets are in contact with the sponge, and the sponge absorbs the permeate, thereby avoiding splashing and waste of the permeate, ensuring the cleanliness of the interior of the equipment, and reducing the difficulty of subsequent cleaning.

[0019] 2. The present invention provides a downward pressing mechanism to move the sponge downward and squeeze the specimen, so that the permeate in the sponge can penetrate into the specimen. On the one hand, it can achieve uniform immersion of the specimen, and on the other hand, it can avoid displacement of the specimen through the friction between the sponge and the specimen, thereby ensuring the stability of the specimen.

[0020] 3. The present invention can make the support seat partially exposed, so it is convenient to remove and re-place the test piece, thereby improving the test efficiency. In addition, due to the support of the first gear, the second gear and the rack, the support seat can be prevented from squeezing the sound wave generator. Through the cooperation of the first gear, the second gear and the rack, the support seat can be limited to prevent displacement during detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall three-dimensional structure of Example 1 of the present invention;

[0022] Figure 2 It is a schematic diagram of the top view of the structure of Embodiment 1 of the present invention;

[0023] Figure 3 For Example 1 of the present invention Figure 2 Schematic diagram of the three-dimensional structure of the middle AA section;

[0024] Figure 4 For Example 1 of the present invention Figure 2 Schematic diagram of the three-dimensional structure of the middle BB section;

[0025] Figure 5 For Example 1 of the present invention Figure 2 Schematic diagram of the three-dimensional structure of the middle CC section;

[0026] Figure 6 For Example 1 of the present invention Figure 3 A magnified view of the structure at D in the middle;

[0027] Figure 7 For Example 1 of the present invention Figure 4 Enlarged view of the structure at E in the middle;

[0028] Figure 8 This is a schematic diagram of the three-dimensional structure of the support base in Example 1 of the present invention;

[0029] Fig. 9 It is a schematic diagram of the overall three-dimensional structure of the first viewing angle of the embodiment 2 of the present invention;

[0030] Fig.10 For Example 2 of the present invention Fig. 9 A magnified view of the structure at F in the middle;

[0031] Fig.11 is a schematic diagram of the overall three-dimensional structure of the second viewing angle of embodiment 2 of the present invention;

[0032] Fig.12 For Example 2 of the present invention Fig.11 Enlarged view of the structure at G in the middle.

[0033] In the figure: 1, box; 2, pressing mechanism; 21, motor; 22, screw rod; 23, connecting shaft; 24, screw sleeve; 25, limit column; 26, guide rail; 27, lower support rod; 28, upper support rod; 29, hinge shaft; 210, roller; 3, sponge; 31, lifting frame; 4, liquid storage tank; 41, liquid inlet; 42, supercharger; 43, guide tube; 44, mounting frame; 45, liquid outlet; 46, telescopic rod; 47, first spring; 5, sound wave generator; 6, test piece; 7, support seat; 71, guide groove; 8, bottom frame; 9, waste pipe;

[0034] 10. Rack; 11. Fixed frame; 12. First gear; 13. Groove; 14. Second gear; 15. Slide; 16. Second spring; 17. Limiting piece; 18. Slideway. DETAILED DESCRIPTION

[0035] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0036] The structure of the present invention is described in detail below in conjunction with the accompanying drawings.

[0037] Example 1

[0038] like Figures 1 to 8 As shown, a porous material permeability testing device provided by an embodiment of the present invention includes a box body 1, a liquid storage tank 4 is arranged on the top of the box body 1, one end of the liquid storage tank 4 is connected to a plurality of liquid outlets 45, a base frame 8 is arranged inside the box body 1, downward pressing mechanisms 2 are arranged at both ends of the base frame 8, a sponge 3 is movably arranged on the downward pressing mechanism 2, a sound wave generator 5 is installed on the base frame 8, a support seat 7 is connected to the upper part of the sound wave generator 5, a test piece 6 is arranged on the support seat 7, and the sponge 3 is pressed onto the test piece 6.

[0039] In the present application, the specimen 6 is placed on the support seat 7, and the permeate flows evenly onto the sponge 3 through the liquid storage tank 4. After the sponge 3 absorbs a certain amount of permeate, the sponge 3 is driven to move downward by the downward pressure mechanism 2, so that the sponge 3 and the specimen 6 are in close contact. The permeate in the sponge 3 flows onto the specimen 6 through squeezing and is gradually absorbed by the specimen 6. The penetration is accelerated by starting the sound wave generator 5, and the permeated liquid is collected through the support seat 7 and the waste pipe 9.

[0040] Furthermore, a liquid inlet 41 and a booster 42 are respectively provided on both sides of the upper end of the liquid storage tank 4, and a conduit 43 is connected to one side of the lower end of the liquid storage tank 4. The conduit 43 is penetrated and arranged in a telescopic rod 46. A first spring 47 is sleeved on the body of the telescopic rod 46. The upper ends of the telescopic rod 46 and the first spring 47 are fixedly connected to the top inner wall of the box body 1, and the lower ends are fixedly connected to a mounting frame 44, and a plurality of liquid outlets 45 are equidistantly arranged on the mounting frame 44.

[0041] Specifically, the permeate is poured into the liquid storage tank 4 from the liquid inlet 41. When in use, the permeate is pressurized by the booster 42 so that the permeate is transported from the conduit 43 to the plurality of liquid outlets 45, so that the telescopic rod 46 and the first spring 47 are extended until the liquid outlet 45 contacts the sponge 3, so that all the permeate is absorbed by the sponge 3. Through this arrangement, not only can the splashing of the permeate and waste be avoided, but also the cleanliness of the interior of the equipment can be ensured, reducing the difficulty of subsequent cleaning.

[0042] Furthermore, a plurality of guide grooves 71 are equidistantly provided on the support seat 7 , and ends of the plurality of guide grooves 71 are interconnected. One end of the support seat 7 is connected to a waste discharge pipe 9 .

[0043] In the specific setting, the upper end of the waste pipe 9 is connected to the guide groove 71, and the lower end extends to the outside of the box body 1. The support seat 7 can support the test piece 6, and the guide groove 71 can guide the seeping permeate so that the permeate is gathered into the waste pipe 9 for collection.

[0044] Furthermore, the pressing mechanism 2 includes a motor 21 and a connecting shaft 23, the connecting shaft 23 is rotatably installed in the middle of the base frame 8, the motor 21 is fixedly installed at one end of the base frame 8, both ends of the connecting shaft 23 are fixedly connected with screw rods 22, the motor 21 is fixedly connected to one end of one of the screw rods 22, a screw sleeve 24 is threadedly connected to the screw rod 22, the screw sleeve 24 is slidably connected to the inner wall of the base frame 8, both sides of the screw sleeve 24 are fixedly connected to limit columns 25, the bottom of the limit column 25 is slidably connected to the guide rail 26, the guide rail 26 is fixedly connected to the base frame 8, a roller 210 is rotatably connected in the limit column 25, both ends of the upper surface of the base frame 8 are hinged with lower support rods 27, the upper end of the lower support rod 27 is hinged with an upper support rod 28 through a hinge shaft 29, the roller 210 is rotatably connected to the end of the hinge shaft 29, the end of the upper support rod 28 away from the lower support rod 27 is hinged with a lifting frame 31, and the sponge 3 is fixedly installed in the lifting frame 31.

[0045] Specifically, the screw rod 22 is driven to rotate by starting the motor 21, and the screw sleeve 24 drives the limiting column 25 to gradually move away from the lifting frame 31 through the threaded cooperation between the screw sleeve 24 and the screw rod 22 and the sliding cooperation between the screw sleeve 24 and the inner wall of the base frame 8. During the movement of the limiting column 25, the inner angle between the upper support rod 28 and the lower support rod 27 gradually decreases, and the roller 210 moves downward and rolls inside the limiting column 25, so that the lifting frame 31 drives the sponge 3 to move downward and press on the specimen 6. The friction between the sponge 3 and the specimen 6 can achieve the limitation of the specimen 6 to avoid the displacement of the specimen 6 under the action of the sound wave generator 5, and at the same time, it can also ensure the good contact between the sponge 3 and the specimen 6.

[0046] Example 2

[0047] See also Figure 9-12 , which is different from Example 1, is provided with the following configuration on the basis of Example 1: at least two racks 10 are installed on the bottom wall of the support seat 7, and the racks 10 are respectively located on both sides of the sound wave generator 5;

[0048] Two fixing frames 11 are provided on the upper side of the base frame 8, and the fixing frames 11 correspond to the racks 10 one by one. Two first gears 12 are rotatably connected to each fixing frame 11, and the two first gears 12 are meshed with the racks 10;

[0049] The base frame 8 is provided with a groove 13 , and the connecting shaft 23 passes through the groove 13 . A second gear 14 is fixedly sleeved on the connecting shaft 23 , and the second gear 14 is located in the groove 13 , and the second gear 14 is meshed with the first gear 12 .

[0050] When used specifically, the following steps are included:

[0051] In the first step, after the detection is completed, the motor 21 rotates to make the lifting frame 31 rise, and at the same time, the connecting shaft 23 can automatically move the support seat 7 out partially through the first gear 12, the second gear 14 and the rack 10;

[0052] In the second step, the tested test piece 6 is manually removed and a new test piece 6 is placed;

[0053] In the third step, the motor 21 rotates in the reverse direction, and the support seat 7 drives the test piece 6 to move to the bottom of the lifting frame 31, and at the same time, the lifting frame 31 descends, so that the sponge 3 is pressed onto the test piece 6;

[0054] Step 4: Start testing the water supply.

[0055] Through this arrangement, since a part of the support seat 7 can be brought out, it is convenient to remove and re-place the test piece 6, thereby improving the test efficiency. And because of the support of the first gear 12, the second gear 14 and the rack 10, the support seat 7 can be prevented from squeezing the sound wave generator 5. Through the cooperation of the first gear 12, the second gear 14 and the rack 10, the support seat 7 can be limited to prevent displacement during detection. It should be noted that at this time, the waste pipe is a hose, allowing the support seat 7 to move within a certain range.

[0056] Furthermore, a sliding groove 15 is provided on the bottom wall of the support seat 7, and the rack 10 is slidably connected to the sliding groove 15. A second spring 16 is provided in the sliding groove 15, one end of the second spring 16 is fixedly connected to the end of the sliding groove 15, and the other end of the second spring 16 is fixedly connected to the rack 10.

[0057] For test pieces 6 of different thicknesses, the distance that the lifting frame 31 descends is different, so the distance that the support seat 7 moves is also different accordingly. By providing the second spring 16, when the support seat 7 is pushed into the box body 1 and the support seat 7 contacts the side wall of the box body 1, the first gear 12 and the second gear 14 can still rotate (at this time, the rack 10 compresses the second spring 16 and slides in the slide groove 15), so as not to hinder the rotation of the motor 21, and also not to hinder the lifting frame 31 from continuing to descend.

[0058] Example 3

[0059] The conduit 43 passes through the pitch gap of the first spring 47 , the weight of the mounting bracket 44 is greater than the elastic force of the first spring 47 , and the conduit 43 is an elastic hose.

[0060] In this setting, the mounting frame 44 is always pressed on the sponge 3. When the sponge 3 descends, the first spring 47 is extended, and the pitch gap of the first spring 47 becomes larger without squeezing the conduit 43, so the conduit 43 can automatically supply water to the mounting frame 44; when the test is over, the sponge 3 rises, and the first spring 47 is shortened and squeezes the conduit 43, which can automatically shut off the water supply. Through this setting, the automatic opening and closing of the water supply can be realized, and the booster 42 is used for rapid water supply.

[0061] Working principle of the present invention:

[0062] During use, the permeate is injected into the liquid storage tank 4 from the liquid inlet 41, and the permeate is pressurized by the booster 42 to be distributed in a plurality of liquid outlets 45, so that the liquid outlets 45 are in contact with the sponge 3, so that the permeate is evenly absorbed by the sponge 3, and then the test piece 6 is placed on the support seat 7, and the motor 21 is started to drive the limit columns 25 at both ends to move outward, and the lower support rod 27 and the upper support rod 28 are pulled to make the sponge 3 downward and close to the test piece 6. After the sponge 3 is squeezed, the permeate inside it flows onto the test piece 6 and is absorbed by the test piece 6, and the seeped liquid flows into the guide groove 71 and gathers in the waste pipe 9 for collection.

[0063] In summary, the porous material permeability testing device, by setting a plurality of liquid outlets 45 that can be moved downward, makes the liquid outlet 45 contact with the sponge 3, and absorbs the permeate through the sponge 3, which can avoid splashing and waste of the permeate, ensure the cleanliness of the inside of the equipment, and reduce the difficulty of subsequent cleaning. By setting a downward pressing mechanism 2, the sponge 3 is moved downward and squeezed with the test piece 6, so that the permeate in the sponge 3 is immersed in the test piece 6. On the one hand, it can achieve uniform immersion of the test piece 6, and on the other hand, it can also avoid displacement of the test piece 6 through the friction between the sponge 3 and the test piece 6, thereby ensuring the stability of the test piece 6.

[0064] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0065] 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 porous material permeability testing device, comprising a housing (1), characterized in that: A liquid storage tank (4) is arranged on the top of the box body (1), one end of the liquid storage tank (4) is connected to a plurality of liquid outlets (45), a base frame (8) is arranged inside the box body (1), downward pressing mechanisms (2) are arranged at both ends of the base frame (8), a sponge (3) is movably arranged on the downward pressing mechanism (2), a sound wave generator (5) is installed on the base frame (8), a support seat (7) is connected to the upper part of the sound wave generator (5), a test piece (6) is arranged on the support seat (7), and the sponge (3) is pressed onto the test piece (6).

2. The porous material permeability testing device according to claim 1, characterized in that: The upper sides of the liquid storage tank (4) are respectively provided with a liquid inlet (41) and a supercharger (42); the lower side of the liquid storage tank (4) is connected with a conduit (43); the conduit (43) is arranged through a telescopic rod (46); a first spring (47) is sleeved on the body of the telescopic rod (46); the upper ends of the telescopic rod (46) and the first spring (47) are fixedly connected to the top inner wall of the box body (1); the lower ends are fixedly connected to a mounting frame (44); and a plurality of liquid outlets (45) are equidistantly arranged on the mounting frame (44).

3. The porous material permeability testing device according to claim 1, characterized in that: The support seat (7) is provided with a plurality of guide grooves (71) at equal intervals, the ends of the plurality of guide grooves (71) are connected to each other, and one end of the support seat (7) is connected to a waste discharge pipe (9).

4. The porous material permeability testing device according to claim 1 or 3, characterized in that: The pressing mechanism (2) comprises a motor (21) and a connecting shaft (23); the connecting shaft (23) is rotatably mounted on the middle of the base frame (8); the motor (21) is fixedly mounted on one end of the base frame (8); both ends of the connecting shaft (23) are fixedly connected to screw rods (22); and the motor (21) is fixedly connected to one end of one of the screw rods (22).

5. The porous material permeability testing device according to claim 4, characterized in that: A screw sleeve (24) is threadedly connected to the screw rod (22), the screw sleeve (24) is slidably connected to the inner wall of the base frame (8), both sides of the screw sleeve (24) are fixedly connected to limit posts (25), the bottom of the limit posts (25) is slidably connected to the guide rail (26), the guide rail (26) is fixedly connected to the base frame (8), and a roller (210) is rotatably connected inside the limit posts (25).

6. The porous material permeability testing device according to claim 5, characterized in that: Lower support rods (27) are hingedly connected at both ends of the upper surface of the base frame (8); the upper end of the lower support rod (27) is hingedly connected to an upper support rod (28) via a hinge shaft (29); and the roller (210) is rotatably connected to the end of the hinge shaft (29).

7. The porous material permeability testing device according to claim 6, characterized in that: One end of the upper support rod (28) away from the lower support rod (27) is hingedly connected to a lifting frame (31), and the sponge (3) is fixedly installed in the lifting frame (31).

8. The porous material permeability testing device according to claim 7, characterized in that: At least two racks (10) are installed on the bottom wall of the support seat (7), and the racks (10) are respectively located on both sides of the sound wave generator (5); Two fixing frames (11) are provided on the upper side of the base frame (8), the fixing frames (11) and the racks (10) correspond one to one, each of the fixing frames (11) is rotatably connected to two first gears (12), and the two first gears (12) are both meshed with the racks (10); The base frame (8) is provided with a groove (13), the connecting shaft (23) passes through the inside of the groove (13), a second gear (14) is fixedly sleeved on the connecting shaft (23), the second gear (14) is located inside the groove (13), and the second gear (14) is meshed with the first gear (12).

9. The porous material permeability testing device according to claim 8, characterized in that: The bottom wall of the support seat (7) is provided with a sliding groove (15), the rack (10) is slidably connected to the sliding groove (15), a second spring (16) is provided in the sliding groove (15), one end of the second spring (16) is fixedly connected to the end of the sliding groove (15), and the other end of the second spring (16) is fixedly connected to the rack (10).

10. The porous material permeability testing device according to claim 9, characterized in that: The conduit (43) passes through the pitch gap of the first spring (47), the weight of the mounting frame (44) is greater than the elastic force of the first spring (47), and the conduit (43) is an elastic hose.

Images