A concrete permeability detection device

Abstract

The utility model relates to concrete water permeability detection technical field, and disclose a kind of concrete water permeability detection equipment, including measuring cylinder, the top of measuring cylinder is equipped with threaded hole.This concrete water permeability detection equipment, through the setting of lower pressure mechanism, when using, the measuring cylinder bottom sealing head is tightly attached in the top of concrete sample, then injects water source into measuring cylinder interior, and sealing cover is closely connected by thread, second, rotate the threaded rod on sealing cover again, threaded rod passes through bottom first pivot, and drive the lower pressure disc of first pivot bottom to pressurize water source in measuring cylinder interior, cooperate the pressure sensor of the lower pressure disc bottom and carry out real-time monitoring to water pressure, and pressure value is transmitted to the display screen on one side and is referenced, to reach the effect that simple and convenient pressurization and accurate control to pressure, simple structure, convenient operation, need not to operate by the aid of external pressurization equipment, saves equipment use cost.

Description

Technical Field

[0001] This utility model relates to the field of concrete permeability testing technology, and in particular to a concrete permeability testing device. Background Technology

[0002] Permeability is an indicator of the permeability of rock mass. The concrete mix design varies depending on the application and the concrete mix, resulting in different permeability rates. Current concrete testing equipment typically uses a graduated cylinder with both ends inserted. The bottom of the cylinder is placed against the top surface of the concrete, and a suitable amount of water is poured into the cylinder. The rate at which the water level drops is observed to determine the concrete's permeability.

[0003] A permeable concrete permeability testing device disclosed in publication number CN223389616U includes a testing cylinder. The outer wall of the testing cylinder is fixedly equipped with a positioning ring, and the bottom of the positioning ring is equipped with a tension ring. The inner wall of the tension ring and the outer wall of the testing cylinder are in clearance fit. The bottom outer wall of the positioning ring is fixedly equipped with evenly distributed tension springs, and the bottom outer wall of the tension springs is fixedly connected to the top outer wall of the tension ring. This invention utilizes a rubber sealing disc located at the bottom of the testing cylinder, positioned on top of the concrete, and two support plates located at the bottom of the concrete. A rotating block rotates two threaded rods, causing the two support plates to press against the bottom of the concrete. The tension ring begins to move downwards, and through the tension springs, it pulls the positioning ring downwards, causing the rubber sealing disc to adhere tightly to the top outer wall of the concrete. The rubber sealing disc deforms and fills the gaps on the concrete surface, effectively preventing water from overflowing from the concrete surface.

[0004] While the aforementioned patent achieves the goal of placing a rubber sealing disc at the bottom of the measuring cylinder on top of the concrete and two support plates at the bottom, using a rotating block to rotate two threaded rods, the two support plates are pressed against the bottom of the concrete, causing the tension ring to move downwards. The tension ring, through a tension spring, drives the positioning ring downwards, pulling the measuring cylinder downwards, thus ensuring the rubber sealing disc is tightly pressed against the top outer wall of the concrete. The rubber sealing disc deforms and fills the gaps on the concrete surface, effectively preventing water from overflowing from the concrete surface. However, this device has several drawbacks. First, it requires connection to an external air compressor to provide downward pressure to the inside of the measuring cylinder, increasing the additional operating cost. Second, the clamping structure at the bottom of the device is not easily adjustable, requiring the replacement of devices of corresponding lengths when dealing with concrete samples of different sizes, resulting in poor versatility. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] The purpose of this invention is to provide a concrete permeability testing device, which solves the problems mentioned in the background art. On the one hand, the device requires connection to an external air compressor to provide downward pressure to the inside of the measuring cylinder, which increases the additional cost of the device. On the other hand, the clamping structure at the bottom of the device is not easy to adjust, and when dealing with concrete samples of different sizes, it is necessary to replace the device with one of corresponding length, resulting in poor versatility.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a concrete permeability testing device, comprising a measuring cylinder, a threaded hole at the top of the measuring cylinder, a sealing cap threadedly connected to the inside of the threaded hole, a threaded joint inside the sealing cap, a pressing mechanism threadedly connected to the inside of the threaded joint, a positioning element fixedly connected to the surface of the measuring cylinder, fixing rods fixedly connected to both sides of the positioning element, an adjusting mechanism slidably connected to the inside of the fixing rods, and a pressing mechanism comprising a threaded rod threadedly connected to the inside of the threaded joint, the bottom of the threaded rod being rotatably connected to a first rotating... The shaft has a lower pressure plate fixedly connected to its bottom. A pressure sensor is installed on the bottom of the lower pressure plate, and a display screen is electrically connected to one side of the pressure sensor via a power cord. The adjustment mechanism includes a telescopic rod slidably connected inside a fixed rod. The surface of the telescopic rod has an installation groove, and a support spring is installed inside the installation groove. A limiting hemisphere is fixedly connected to the top of the support spring. The bottom of the telescopic rod has a threaded groove, and a threaded rod is threadedly connected inside the threaded groove. A second shaft is rotatably connected to the top of the threaded rod, and a positioning pad is fixedly connected to the top of the second shaft.

[0009] As a further embodiment of this utility model, a limiting groove is provided inside the mounting groove, and limiting posts are fixedly connected to both sides of the limiting hemisphere. The limiting posts are slidably connected inside the limiting groove, and the limiting posts play a role in limiting the positioning of the limiting hemisphere.

[0010] As a further embodiment of this utility model, the surface of the measuring cylinder is provided with a placement groove, and a scale plate is installed inside the placement groove. The scale plate serves to observe the amount of water level drop.

[0011] As a further embodiment of this utility model, a sealing head is fixedly connected to the bottom of the measuring cylinder, and a sealing mechanism is installed at the bottom of the sealing head. The sealing mechanism achieves a sealing function.

[0012] As a further embodiment of this utility model, the sealing mechanism includes an annular sealing ring installed at the bottom of the sealing head, and an annular spring is installed inside the annular sealing ring. The annular spring serves to support the annular sealing ring.

[0013] As a further embodiment of this utility model, handles are fixedly connected to both sides of the upper surface of the measuring cylinder, and anti-slip sleeves are provided on the surface of the handles, which serve to prevent slipping.

[0014] As a further embodiment of this utility model, the display screen is installed in the middle of the surface of the measuring cylinder, and the surface of the fixing rod is provided with a plurality of positioning holes that are adapted to the limiting hemisphere. The positioning holes are used to position the limiting hemisphere.

[0015] (III) Beneficial Effects

[0016] This utility model provides a concrete permeability testing device, which has the following beneficial effects:

[0017] 1. This concrete permeability testing equipment, through the setting of the pressure mechanism, allows for easy operation by placing the sealing head at the bottom of the measuring cylinder tightly against the top of the concrete sample, then injecting water into the measuring cylinder, and finally connecting the sealing cap tightly via threads. Next, rotating the threaded rod on the sealing cap drives the pressure plate at the bottom of the first rotating shaft to pressurize the water inside the measuring cylinder. A pressure sensor at the bottom of the pressure plate monitors the water pressure in real time and transmits the pressure value to a display screen on one side for reference. This achieves simple pressurization and precise pressure control. The structure is simple, the operation is convenient, and it does not require external pressurization equipment, saving on equipment operating costs.

[0018] 2. This concrete permeability testing equipment, through its adjustable mechanism, allows for the adjustment of the length of the telescopic rods on both sides according to the actual size of the concrete sample when used with concrete samples of different sizes. Simply press down on the limiting hemisphere on the fixed rod, causing it to compress the support spring at the bottom. Simultaneously, apply horizontal force to the telescopic rod. This allows the limiting hemisphere to be adjusted between multiple positioning holes on the fixed rod until the desired position is reached. Then, rotate the threaded bar at the bottom of the telescopic rod. Driven by the second rotating shaft at the top of the threaded bar, the positioning pad above the second rotating shaft is pressed and fixed from the bottom of the concrete sample. This adapts to different concrete samples for clamping and fixing, improving the flexibility and versatility of the equipment during use. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the pressing mechanism of this utility model;

[0021] Figure 3 This is a schematic diagram of the fixing rod structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the adjustment mechanism of this utility model;

[0023] Figure 5 This is a schematic diagram of the sealing mechanism of this utility model.

[0024] In the diagram: 1. Measuring cylinder; 2. Sealing cap; 3. Threaded connector; 4. Pressing mechanism; 401. Threaded rod; 402. First rotating shaft; 403. Pressing plate; 404. Pressure sensor; 405. Display screen; 5. Positioning component; 6. Fixing rod; 7. Adjusting mechanism; 701. Telescopic rod; 702. Support spring; 703. Limiting hemisphere; 704. Threaded bar; 705. Second rotating shaft; 706. Positioning pad; 8. Limiting post; 9. Scale plate; 10. Sealing head; 11. Sealing mechanism; 1101. Annular sealing ring; 1102. Annular spring; 12. Handle. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0026] Example 1

[0027] Please see Figures 1 to 5This utility model provides a technical solution: a concrete permeability testing device, including a measuring cylinder 1. A placement groove is formed on the surface of the measuring cylinder 1, and a scale plate 9 is installed inside the placement groove. A sealing head 10 is fixedly connected to the bottom of the measuring cylinder 1, and a sealing mechanism 11 is installed at the bottom of the sealing head 10. Handles 12 are fixedly connected to both sides of the upper surface of the measuring cylinder 1, and anti-slip sleeves are provided on the surface of the handles 12. A threaded hole is formed at the top of the measuring cylinder 1, and a sealing cap 2 is threadedly connected inside the threaded hole. A threaded connector 3 is provided inside the sealing cap 2. A pressing mechanism 4 is connected, which enables simple pressurization and precise pressure control. The structure is simple and easy to operate, eliminating the need for external pressurization equipment and saving on equipment operating costs. A positioning element 5 is fixedly connected to the surface of the measuring cylinder 1, and fixing rods 6 are fixedly connected to both sides of the positioning element 5. An adjusting mechanism 7 is slidably connected inside the fixing rods 6. The adjusting mechanism 7 is used to adapt to different concrete samples for clamping and fixing, improving the flexibility and versatility of the equipment during use. The pressing mechanism 4... The measuring cylinder 1 includes a threaded rod 401 threaded into the threaded connector 3, a first rotating shaft 402 rotatably connected to the bottom of the threaded rod 401, a lower pressure plate 403 fixedly connected to the bottom of the first rotating shaft 402, a pressure sensor 404 mounted on the bottom of the lower pressure plate 403, a display screen 405 electrically connected to one side of the pressure sensor 404 via a power cord, the display screen 405 being mounted in the center of the surface of the measuring cylinder 1, and a plurality of positioning holes adapted to the limiting hemisphere 703 being formed on the surface of the fixed rod 6; the adjusting mechanism 7 includes a telescopic rod 70 slidably connected inside the fixed rod 6. 1. The surface of the telescopic rod 701 is provided with an installation groove, and the inside of the installation groove is provided with a limiting groove. Both sides of the limiting hemisphere 703 are fixedly connected to the limiting post 8. The limiting post 8 is slidably connected to the inside of the limiting groove. The inside of the installation groove is provided with a support spring 702. The top of the support spring 702 is fixedly connected to the limiting hemisphere 703. The bottom of the telescopic rod 701 is provided with a threaded groove. The inside of the threaded groove is threadedly connected to a threaded rod 704. The top of the threaded rod 704 is rotatably connected to a second rotating shaft 705. The top of the second rotating shaft 705 is fixedly connected to a positioning pad 706.

[0028] Furthermore, the sealing mechanism 11 includes an annular sealing ring 1101 installed at the bottom of the sealing head 10. The annular sealing ring 1101 facilitates sealing at the sealing head 10. An annular spring 1102 is installed inside the annular sealing ring 1101, which helps to improve the sealing performance of the annular sealing ring 1101.

[0029] In this invention, the working steps of the device are as follows:

[0030] First step: When using the measuring cylinder 1, place the bottom sealing head 10 tightly against the top of the concrete sample, then inject water into the measuring cylinder 1, and tightly connect the sealing cap 2 with threads. Next, rotate the threaded rod 401 on the sealing cap 2. The threaded rod 401 drives the lower pressure plate 403 at the bottom of the first rotating shaft 402 through the bottom to pressurize the water inside the measuring cylinder 1. The pressure sensor 404 set at the bottom of the lower pressure plate 403 monitors the water pressure in real time and transmits the pressure value to the display screen 405 on one side for reference.

[0031] The second step: When using concrete samples of different sizes, adjust the length of the telescopic rods 701 on both sides according to the actual size of the concrete sample. Simply press down the limiting hemisphere 703 on the fixing rod 6 so that the limiting hemisphere 703 squeezes the support spring 702 at the bottom. At the same time, apply horizontal force to the telescopic rod 701. This allows the limiting hemisphere 703 to be adjusted between multiple positioning holes on the fixing rod 6 until it is adjusted to the appropriate position. Then, rotate the threaded rod 704 at the bottom of the telescopic rod 701. Driven by the second rotating shaft 705 at the top of the threaded rod 704, the positioning pad 706 above the second rotating shaft 705 is squeezed and fixed from the bottom of the concrete sample. It should be noted that the device structure and accompanying drawings of this utility model mainly describe the principle of this utility model. In terms of the technical aspects of this design principle, the setting of the power mechanism, power supply system and control system of the device is not fully described. However, under the premise that those skilled in the art understand the principle of the above utility model, the specific details of its power mechanism, power supply system and control system can be clearly understood. The control method in the application document is automatic control through a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming.

[0032] All standard parts used can be purchased from the market, and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or conventional experimental methods.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A concrete permeability testing device, comprising a measuring cylinder (1), characterized in that: The top of the measuring cylinder (1) is provided with a threaded hole, and a sealing cap (2) is threadedly connected inside the threaded hole. A threaded joint (3) is provided inside the sealing cap (2), and a pressing mechanism (4) is threadedly connected inside the threaded joint (3). A positioning element (5) is fixedly connected to the surface of the measuring cylinder (1), and a fixing rod (6) is fixedly connected to both sides of the positioning element (5). An adjusting mechanism (7) is slidably connected inside the fixing rod (6). The pressing mechanism (4) includes a threaded rod (401) threaded inside the threaded joint (3). The bottom of the threaded rod (401) is rotatably connected to a first rotating shaft (402). The bottom of the first rotating shaft (402) is fixedly connected to a pressing plate (403). A pressure sensor (404) is installed at the bottom of the pressing plate (403). A display screen (405) is electrically connected to one side of the pressure sensor (404) via a power cord. The adjusting mechanism (7) includes a telescopic rod (701) slidably connected inside the fixed rod (6). The surface of the telescopic rod (701) is provided with an installation groove. A support spring (702) is installed inside the installation groove. A limiting hemisphere (703) is fixedly connected to the top of the support spring (702). A threaded groove is provided at the bottom of the telescopic rod (701). A threaded rod (704) is threadedly connected inside the threaded groove. A second rotating shaft (705) is rotatably connected to the top of the threaded rod (704). A positioning pad (706) is fixedly connected to the top of the second rotating shaft (705).

2. The concrete permeability testing device according to claim 1, characterized in that: The mounting groove has a limiting groove inside, and the limiting hemisphere (703) is fixedly connected to both sides of the limiting column (8), and the limiting column (8) is slidably connected to the inside of the limiting groove.

3. The concrete permeability testing device according to claim 1, characterized in that: The measuring cylinder (1) has a placement groove on its surface, and a scale plate (9) is installed inside the placement groove.

4. The concrete permeability testing device according to claim 1, characterized in that: A sealing head (10) is fixedly connected to the bottom of the measuring cylinder (1), and a sealing mechanism (11) is installed at the bottom of the sealing head (10).

5. The concrete permeability testing device according to claim 4, characterized in that: The sealing mechanism (11) includes an annular sealing ring (1101) installed at the bottom of the sealing head (10), and an annular spring (1102) is installed inside the annular sealing ring (1101).

6. The concrete permeability testing device according to claim 1, characterized in that: The upper surface of the measuring cylinder (1) is fixedly connected to both sides of the handle (12), and the surface of the handle (12) is provided with an anti-slip sleeve.

7. The concrete permeability testing device according to claim 1, characterized in that: The display screen (405) is installed in the middle of the surface of the measuring cylinder (1), and the surface of the fixing rod (6) is provided with a number of positioning holes that are adapted to the limiting hemisphere (703).

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