Workpiece fixing structure of concrete impermeability instrument

Abstract

The utility model discloses a workpiece fixing structure of a concrete anti-permeability instrument, which comprises a fixing piece, a mounting groove in the fixing piece is conical, a sealing groove is arranged on the side wall of the mounting groove, a glue injection hole and an exhaust hole are arranged on the sealing groove, a glue injection cap is arranged on the glue injection hole, and the exhaust hole is communicated with the glue injection cap. The bottom of the fixing piece is connected with an anti-permeability instrument through a connecting flange; the sealing groove is a spiral sealing groove, and the glue injection hole is formed in the bottommost part of the spiral sealing groove; a plurality of exhaust holes are formed in the spiral sealing groove, the exhaust holes are communicated with the sealing groove, one of the exhaust holes is located in the top of the spiral sealing groove, and the exhaust holes are detachably provided with plugging caps. In the application, after the test piece and the mounting groove are mounted, the gap between the test piece and the mounting groove is sealed again, so that the error caused by a permeation water circulation channel formed by the gap caused by the error is avoided, the success rate of the experiment is improved, the experiment frequency is reduced, and the preparation number of the test piece is further reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete testing, in particular to a workpiece fixing structure of a concrete impermeability tester. Background Art

[0002] The impermeability of concrete refers to its ability to resist the penetration of pressurized water. This performance is mainly determined by the compactness and pore structure of the concrete itself. The compactness and pore structure are affected by many factors, including the formation and hardening of cement colloids, the pore structure of concrete, the water-cement ratio, the type of cement, the gradation of aggregates, the curing conditions, and the types of admixtures used. The usual measurement method is to use the water seepage method for measurement. The specific operation steps are to give the concrete to be tested a certain water pressure so that the water diffuses and migrates in the concrete, and then detect the increasing water pressures at various levels that the concrete is subjected to according to the preset standards and time, or observe and analyze the differences in the different diffusion or changes of water in the concrete, and then describe and test the impermeability of the concrete to be tested.

[0003] The current mainstream measurement method is to make conical specimens and measure them using a water-resistance meter. The main problem is that multiple specimens need to be prepared and the specimens and molds must fit closely together. Once there is a deviation in the specimen preparation, moisture will flow out along the gap between the specimen and the fixed structure, and the experiment must be repeated. Therefore, before the test, multiple groups of specimens need to be prepared in case of emergency. In addition, the size of the entire specimen preparation process needs to be strictly controlled, resulting in a long experimental cycle, high test requirements, and a high failure rate. For this reason, we proposed a workpiece fixing structure for a concrete water-resistance meter to solve the above problems. Utility Model Content

[0004] The present application provides a workpiece fixing structure for a concrete impermeability tester, which solves the problem of high experimental failure rate caused by inadequate sealing between the test piece and the fixing piece in concrete impermeability test.

[0005] The present application provides a workpiece fixing structure for a concrete impermeability tester, comprising a fixing member, wherein the mounting groove in the fixing member is conically arranged, a sealing groove is arranged on the side wall of the mounting groove, a glue injection hole and an exhaust hole are arranged on the sealing groove, a glue injection cap is installed on the glue injection hole, and the bottom of the fixing member is connected to the impermeability tester via a connecting flange.

[0006] Preferably, the sealing groove is a spiral sealing groove, and the glue injection hole is located at the bottom of the spiral sealing groove.

[0007] Preferably, a connecting groove is provided between two adjacent threads of the spiral sealing groove.

[0008] Preferably, there are multiple exhaust holes, and the multiple exhaust holes are connected to the sealing groove, and one of the exhaust holes is located at the top of the spiral sealing groove, and the exhaust hole is detachably installed with a sealing cap.

[0009] Preferably, the spiral sealing groove has three circles.

[0010] Preferably, a first sealing groove is provided at the bottom of the fixing member, a second sealing groove is provided at the top of the fixing member, and two ends of the test piece extend into the first sealing groove and the second sealing groove respectively.

[0011] Preferably, the glue injection cap comprises a fixing ring fixed on the fixing member, a silicone gasket is provided on the fixing ring, the silicone gasket corresponds to the glue injection hole, and an opening is provided on the silicone gasket.

[0012] Preferably, the connecting flange is provided with fixing holes, and the connecting flange is fixed to the impermeability tester by bolts.

[0013] It can be seen from the above technical scheme that the present application provides a workpiece fixing structure for a concrete impermeability tester. In specific operation, the preparation of test pieces and the preparation of test pieces are the same as the prior art. When installing the test piece, first send the fixing part to the oven for preheating at 55-65 degrees for 10 minutes. Gloves must be worn when taking the fixing part. The test piece is installed in the installation groove according to the conical matching degree, and is pressed by a top pressing device. Then, the melted paraffin oil is extracted through a pinhole injection device, and the wax oil is injected into the sealing groove through the glue injection hole. After waiting for the fixing part to cool down and solidify, the concrete impermeability test is carried out.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. By setting the sealing groove, a sealing filling can be formed at the connection between the installation groove and the test piece, so that a tighter seal is formed between the test piece and the installation groove after installation, thereby improving the success rate of the experiment;

[0016] 2. By setting the injection hole, injection cap and exhaust hole, the injection work can be completed directly in the middle of the installation groove. The two ends of the installation groove are normally sealed with the test piece. The exhaust hole can discharge the air in the sealing groove, so that the sealing filling fills the entire sealing groove.

[0017] To sum up, in this application, after the specimen and the mounting groove are installed, the gap between the specimen and the mounting groove is sealed again to avoid errors caused by the gaps caused by errors forming channels for the flow of infiltrated water, thereby improving the success rate of the experiment, reducing the number of experiments, and further reducing the number of specimens prepared. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the present application, the following is a brief introduction to the drawings required for use in the implementation cases. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0019] Figure 1 This is a schematic diagram of the internal structure of a workpiece fixing structure of a concrete impermeability tester proposed by the utility model;

[0020] Figure 2 This is a schematic diagram of the external structure of a workpiece fixing structure of a concrete impermeability tester proposed by the utility model;

[0021] Figure 3 This is a schematic diagram of the injection cap structure of a workpiece fixing structure of a concrete impermeability tester proposed by the utility model;

[0022] Figure 4 The utility model provides a schematic diagram of the test piece installation structure of the workpiece fixing structure of the concrete impermeability tester.

[0023] In the figure: 1 fixing part, 2 sealing groove, 3 glue injection cap, 31 fixing ring, 32 opening, 33 silicone gasket, 4 blocking cap, 5 connecting groove, 6 exhaust hole, 7 fixing hole, 8 glue injection hole, 9 first sealing groove, 10 connecting flange, 11 second sealing groove, 12 sealing layer, 13 sealing net, 14 test piece. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0025] See also Figure 1-3, a workpiece fixing structure of a concrete impermeability tester, the application mainly solves the problem that a large gap between a concrete test piece and a fixing structure is caused by an error, resulting in a large gap between the concrete test piece and the fixing structure, causing the pressure water of the impermeability tester to flow out along the gap, resulting in test failure, and the test piece needs to be reinstalled for testing. Specifically, it includes a fixing part 1, which is similar in appearance to the original impermeability tester fixing structure. The mounting groove in the fixing part 1 is conical. During the preparation process, the corresponding test piece 14 needs to maintain the same taper size as the mounting groove. Specifically, the bottom radius of the mounting groove is large and the top radius is small. When installing the test piece, it can The sealing performance is improved by the cooperation of the taper, and the tight fit can be further achieved by water pressure. A sealing groove 2 is arranged on the side wall of the installation groove. The sealing groove 2 is distributed on the side wall of the installation groove. The cross section of the sealing groove 2 can be arranged in a triangle, a rectangle or a trapezoid when it is arranged. It is used to fill the sealing medium, improve the sealing performance between the test piece and the fixing part 1, and prevent the pressure water from flowing along the side wall of the fixing part 1. Correspondingly, a glue injection hole 8 and an exhaust hole 6 are arranged on the sealing groove 2. The glue injection hole 8 is mainly used to inject the sealing medium into the sealing groove 2. It is worth noting that after the test piece is installed, The sealing groove 2 is sealed and can only be connected through the injection hole 8 and the exhaust hole 6. During the process of injecting the sealing medium, the exhaust hole 6 can exhaust the air in the sealing groove 2, so that the sealing filling fills the entire sealing groove 2 to achieve a better sealing effect. The injection hole 8 is equipped with a glue injection cap 3, and the injection cap 3 is provided with a flexible glue injection port, that is, the glue injection pipe extends into the injection hole 8 through the glue injection cap 3 and can pass through the glue injection cap 3. When the glue injection pipe is pulled out, the flexible glue injection port is restored to block the injection hole 8 to prevent the sealing filling from flowing out. In the present application, the injected sealing filling is melted paraffin, so The present application needs to ensure the temperature of the fixing part 1 during sealing, so the present application needs to add treatment to the fixing part 1 during the test. It is worth noting that the thermal expansion coefficients of the fixing part 1 and the test piece 14 are different. The fixing part 1 and the test piece 14 need to be heated separately and assembled after heating. The bottom of the fixing part 1 is connected to the impermeability tester through a connecting flange 10. The connecting flange 10 is provided with a fixing hole 7. The connecting flange 10 is fixed to the impermeability tester by bolts. The installation of the fixing part 1 in the present application is the same as the prior art. It is connected by a connecting flange 10, has good sealing performance, and is easy to install.

[0026] In some embodiments, the sealing groove 2 is a spiral sealing groove. When the sealing filling is injected, the sealing filling is spirally injected along the sealing groove 2 to reduce the generation of gaps. The injection hole 8 is located at the bottom of the spiral sealing groove. When the sealing filling is injected, it is injected from the bottom of the spiral sealing groove. The exhaust hole 6 is located at the top of the spiral sealing groove. When the sealing filling appears in the exhaust hole 6, the injection is stopped, and a better sealing state can be achieved.

[0027] Furthermore, a connecting groove 5 is provided between two adjacent threads of the spiral sealing groove. Since the spiral sealing groove has a spiral channel, the spiral channel can be separated by the connecting groove 5 to improve the sealing performance.

[0028] Furthermore, since the sealing filling no longer rises along the spiral channel, there are multiple exhaust holes 6, and the multiple exhaust holes 6 are connected to the sealing groove 2, which can complete the filling of most of the sealing grooves 2 or the connecting grooves 5, thereby improving the sealing performance. One of the exhaust holes 6 is located at the top of the spiral sealing groove. When the sealing filling also emerges from the exhaust hole 6 at the top, the injection can be stopped. In addition, the exhaust hole 6 is detachably installed with a plugging cap 4, and each time a exhaust hole 6 emerges after the sealing filling emerges, it can be blocked by the plugging cap 4. When the exhaust hole 6 at the top is blocked and there are still exhaust holes 6 without sealing filling emerging, the injection continues until all the exhaust holes 6 are blocked. The direction of the sealing filling can be monitored through the multiple exhaust holes 6. After the injection is completed, it is cooled, and the sealing filling solidifies to form a sealing net 13.

[0029] Furthermore, the spiral sealing groove has three circles. Fewer spiral sealing grooves have a poorer effect, and more spiral sealing grooves reduce the efficiency of injection sealing filling. Therefore, the spiral sealing groove has three circles.

[0030] In the utility model, Figure 1 As shown, the bottom of the fixing member 1 is provided with a first sealing groove 9, the top of the fixing member 1 is provided with a second sealing groove 11, and the two ends of the test piece 14 extend into the first sealing groove 9 and the second sealing groove 11 respectively. During the installation of the test piece 14, a gap is formed between the first sealing groove 9, the second sealing groove 11 and the test piece 14, and a sealing filler can be filled into the gap by a sealing filler injection device to form a gap as shown in FIG. Figure 4 The sealing layer 12 is shown.

[0031] In some embodiments, the glue injection cap 3 includes a fixing ring 31 fixed on the fixing member 1, one side of the fixing ring 31 is tightly fixed at the glue injection hole 8, a silicone gasket 33 is provided on the fixing ring 31, the silicone gasket 33 corresponds to the glue injection hole 8, and an opening 32 is provided on the silicone gasket 33. The opening 32 can be set in a straight line, a cross or a plum blossom, and is closed under normal conditions. The glue injection equipment can be inserted into the glue injection hole 8 through the silicone gasket 33 to inject glue, wherein the silicone gasket 33 has good heat resistance and is not easy to be damaged.

[0032] It can be seen from the above technical scheme that when in use, the preparation of the test piece and the preparation of the test piece are the same as the prior art. When installing the test piece, first send the fixing part 1 and the test piece 14 to the oven for preheating at 55-65 degrees for 10 minutes. Gloves should be worn when taking the fixing part 1. The test piece 14 is installed in the installation groove according to the conical matching degree, and is pressed by a pressing device. Then, the melted paraffin oil is extracted through an injection device such as a syringe, and the wax oil is injected into the sealing groove 2 through the injection hole 8. After the fixing part 1 is cooled and solidified, a sealing net 13 is formed, and paraffin oil is injected into the first sealing groove 9 and the second sealing groove 11 to form a sealing layer 12, and a concrete impermeability test is carried out.

[0033] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the application disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope of the present application is indicated by the claims.

[0034] It should be understood that the present application is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The above-described embodiments of the present application do not constitute a limitation on the scope of protection of the present application.

Claims

1. A workpiece fixing structure for a concrete impermeability tester, comprising a fixing member (1), characterized in that: The mounting groove in the fixing member (1) is conically arranged, a sealing groove (2) is arranged on the side wall of the mounting groove, a glue injection hole (8) and an exhaust hole (6) are arranged on the sealing groove (2), a glue injection cap (3) is installed on the glue injection hole (8), and the bottom of the fixing member (1) is connected to the anti-seepage tester via a connecting flange (10).

2. The workpiece fixing structure of a concrete impermeability tester according to claim 1, characterized in that: The sealing groove (2) is a spiral sealing groove, and the glue injection hole (8) is located at the bottom of the spiral sealing groove.

3. The workpiece fixing structure of a concrete impermeability tester according to claim 2, characterized in that: A connecting groove (5) is provided between two adjacent threads of the spiral sealing groove.

4. The workpiece fixing structure of a concrete impermeability tester according to claim 3, characterized in that: There are a plurality of exhaust holes (6), and the plurality of exhaust holes (6) are connected to the sealing groove (2), and one of the exhaust holes (6) is located at the top of the spiral sealing groove, and a sealing cap (4) is detachably installed on the exhaust hole (6).

5. The workpiece fixing structure of a concrete impermeability tester according to claim 4, characterized in that: The spiral sealing groove has three circles.

6. The workpiece fixing structure of a concrete impermeability tester according to claim 1, characterized in that: The bottom of the fixing member (1) is provided with a first sealing groove (9), the top of the fixing member (1) is provided with a second sealing groove (11), and two ends of the test piece (14) extend into the first sealing groove (9) and the second sealing groove (11) respectively.

7. The workpiece fixing structure of a concrete impermeability tester according to claim 1, characterized in that: The glue injection cap (3) comprises a fixing ring (31) fixed on the fixing member (1), a silicone gasket (33) is provided on the fixing ring (31), the silicone gasket (33) corresponds to the glue injection hole (8), and an opening (32) is provided on the silicone gasket (33).

8. The workpiece fixing structure of a concrete impermeability tester according to claim 1, characterized in that: The connecting flange (10) is provided with a fixing hole (7), and the connecting flange (10) is fixed to the impermeability tester by means of bolts.

Images