Moisture detection device

Abstract

A moisture detection device comprises a shell, an electromagnetic moisture measuring instrument, a turbine flowmeter assembly and a water absorption detection device, an installation support is arranged in the shell, a material storage platform is arranged on the installation support, a baffle is arranged in the middle of the material storage platform, and the electromagnetic moisture measuring instrument and the turbine flowmeter assembly are arranged at the two ends of the shell respectively. The water absorption detection device is arranged in the shell; when no water exists on the surface of the object, the electromagnetic water measuring instrument can measure the water content of the object, when flowing water exists on the surface of the object, the turbine flowmeter assembly can measure the water seepage amount of the object, and when non-flowing water exists on the surface of the object, the molecular sieve and the electronic scale can measure the water seepage amount of the object. Due to the fact that the vacuum drying box is arranged, the molecular sieve after water absorption can be dried, the molecular sieve can be dried while measurement is conducted, the convenience of the device is improved, and due to the three different working modes, the moisture detection device can work in different environments conveniently.

Description

Technical Field

[0001] This utility model relates to the field of moisture detection technology, specifically a moisture detection device. Background Technology

[0002] In tunnel engineering, the surrounding rock mass whose stress state changes due to excavation is called the surrounding rock. Mud and water inrushes are major hazards in tunnel engineering. During tunnel excavation, groundwater and surface water can seep into the tunnel environment through secondary fissures or joints in the surrounding rock, seriously affecting safe construction and the expected results. For severe water leakage, curtain grouting is generally used for sealing. For moderate seepage, concrete with good impermeability or a waterproof layer is typically used. For water leakage, construction usually employs direct or indirect measurement methods. Direct measurement involves placing a container below the seepage point when significant dripping or continuous seepage occurs in the upper part of the surrounding rock, and measuring the water volume after 24 hours to determine the severity of the leakage. Indirect measurement mainly utilizes structural and array ultrasonic imaging techniques. These non-destructive testing techniques provide a more accurate and faster method for detecting and locating tunnel seepage points, but they cannot measure the amount of water seeping into the seepage point. When severe water seepage occurs in the surrounding rock of a tunnel, curtain grouting is often used in engineering. The water inflow rate of the surrounding rock after curtain grouting is an important basis for accepting the grouting effect. Therefore, it is necessary to expedite the measurement of the water inflow rate of the surrounding rock after grouting. Currently, surface moisture detection devices are mainly used in the chemical and meteorological fields, while in the civil engineering field they are only used to identify seepage points on building surfaces. They are not well applied to the detection of water seepage in the surrounding rock after tunnel blasting.

[0003] CN217505584U discloses a waterproof testing device for building materials, including a test box, a placement plate, and a water tank. When using this waterproof testing device, a sponge is used to absorb water droplets on the building materials, and a weighing device is used to detect the weight of the building materials and the weight of the water, thus preventing water from entering the interior of the building materials without being detected. The movement of the movable plate is used to limit the movement of building materials of different specifications.

[0004] Because moisture detection requires multiple measurements to ensure accuracy, the existing technology described above, which uses a sponge to absorb water, lacks a drying device for the absorbent material. Multiple measurements necessitate the use of multiple sponges, requiring the preparation of several sponges in advance or the carrying of a drying device, making the operation cumbersome. Furthermore, the existing technology can only measure moisture on the surface of the object being tested when there is no dripping water, thus making it unsuitable for various testing environments. Utility Model Content

[0005] The purpose of this invention is to provide a moisture detection device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A moisture detection device includes a housing, an electromagnetic moisture meter, a turbine flow meter assembly, and a water absorption detection device. The housing contains a mounting bracket, and the mounting bracket has a storage platform. A baffle is located in the middle of the storage platform.

[0008] The electromagnetic moisture meter and turbine flow meter assembly are respectively located at both ends of the housing, and the water absorption detection device is located inside the housing.

[0009] The water absorption detection device includes a lifting component, a fixing component, a molecular sieve, an electronic scale, a driving component, a pushing component, a vacuum drying oven, a roller assembly, and a collection box. The lifting component is set on a storage platform. The lifting end of the lifting component is equipped with a molecular sieve through the fixing component, and an electronic scale is set between the fixing component and the molecular sieve. The driving component has a fixing component at its execution end. Two driving components are respectively set at both ends of the mounting bracket. One driving component is equipped with a vacuum drying oven below it, and a pushing component is set inside the vacuum drying oven. The other driving component is equipped with a collection box and a pushing component between it and the lifting component. The pushing component is located between the collection box and the lifting component and is higher than the vacuum drying oven. One end of the roller assembly is set at the bottom side of the vacuum drying oven, and the other end is located below the driving component away from the vacuum drying oven. A pushing component is also set inside the collection box.

[0010] Preferably, the fixing component includes a base, an electric cylinder III, and a pressing block. The base is provided with electric cylinder III at both ends, and the electric cylinder III is provided with a pressing block at its actuating end.

[0011] Preferably, the lifting assembly includes a motor and a screw. The motor is mounted on the storage platform and is powered by the screw. The base of the fixing assembly assembled with the lifting assembly is threadedly connected to the screw to form a threaded transmission, and an electronic scale is mounted on the base.

[0012] Preferably, the drive assembly includes a linear drive module and an electric cylinder I. The linear drive module is mounted on a mounting bracket, and the moving end of the linear drive module is provided with an electric cylinder I. The telescopic end of the electric cylinder I is fixedly connected to the base of the fixed assembly.

[0013] Preferably, the pushing assembly includes an electric cylinder II and a pushing block. The electric cylinder II has a pushing block at its telescopic end and a mounting part at the other end. The mounting part of the pushing assembly located inside the vacuum drying oven is located at the lower end of the vacuum drying oven. The mounting part of the pushing assembly located on the side of the lifting assembly is located on the baffle plate. The mounting part of the pushing assembly located inside the collection box is located at the lower end of the collection box.

[0014] Preferably, the bottom and sides of the vacuum drying oven are hinged with door panels by torsion springs. The opening of the side door panel is the same size as the molecular sieve, and the opening of the side door panel faces the pushing end of the pushing component inside the vacuum drying oven.

[0015] Preferably, the turbine flow meter assembly includes a funnel, a water pipe, and a turbine flow meter. The funnel is located at the end of the housing, the water pipe is connected to the narrow end of the funnel, and the turbine flow meter is disposed inside the water pipe.

[0016] Preferably, the bottom of the inner side of the collection box has a through hole of the same size as the molecular sieve.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This utility model discloses a moisture detection device. When there is no moisture on the surface of the object being tested, an electromagnetic moisture meter can be used to measure the internal water content of the object. When there is flowing water on the surface of the object, a turbine flow meter assembly can be used to measure the amount of water seepage. When there is no flowing water on the surface of the object, a molecular sieve and an electronic scale can be used to measure the amount of water seepage. Furthermore, because a vacuum drying chamber is provided to dry the molecular sieve after it absorbs water, the molecular sieve can be dried simultaneously with the measurement. This eliminates the need to prepare multiple molecular sieves in advance or carry a drying device to dry the molecular sieve, increasing the convenience of the device. The three different working modes make it convenient for the moisture detection device to work in different environments. Attached Figure Description

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

[0020] Figure 2 This is a top view of the present invention;

[0021] Figure 3 This is a three-dimensional schematic diagram of the water absorption detection device in this utility model;

[0022] Figure 4 This is a top view of the water absorption detection device in this utility model;

[0023] Figure 5 This is a front view of the water absorption detection device in this utility model;

[0024] Figure 6 This is a cross-sectional view of the water absorption detection device in this utility model;

[0025] In the diagram: 1. Outer shell; 2. Electromagnetic moisture meter; 3. Turbine flow meter assembly; 4. Water absorption detection device; 11. Mounting bracket; 12. Storage platform; 13. Baffle; 31. Funnel; 32. Water pipe; 33. Turbine flow meter; 41. Lifting assembly; 42. Fixing assembly; 43. Molecular sieve; 44. Electronic scale; 45. Drive assembly; 46. Pushing assembly; 47. Vacuum drying oven; 48. Roller assembly; 49. Collection box; 411. Motor; 412. Screw; 421. Base; 422. Electric cylinder III; 423. Extrusion block; 451. Linear drive module; 452. Electric cylinder I; 461. Electric cylinder II; 462. Pushing block; 471. Torsion spring. Detailed Implementation

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] Example:

[0028] Please see Figures 1 to 6 This utility model provides a technical solution:

[0029] A moisture detection device includes a housing 1, an electromagnetic moisture meter 2, a turbine flow meter assembly 3, and a water absorption detection device 4. The housing 1 has an internal mounting bracket 11, on which a storage platform 12 is mounted. A baffle 13 is located in the middle of the storage platform 12.

[0030] The electromagnetic moisture meter 2 and the turbine flow meter assembly 3 are respectively installed at both ends of the outer casing 1, and the water absorption detection device 4 is installed inside the outer casing 1. When there is no moisture on the surface of the object being tested, the electromagnetic moisture meter 2 can measure the water content inside the object being tested. When there is flowing water on the surface of the object being tested, the turbine flow meter assembly 3 can measure the amount of water seepage from the object being tested.

[0031] The water absorption detection device 4 includes a lifting assembly 41, a fixing assembly 42, a molecular sieve 43, an electronic scale 44, a driving assembly 45, a pushing assembly 46, a vacuum drying oven 47, a roller assembly 48, and a collection box 49. The lifting assembly 41 is mounted on the storage platform 12. The lifting end of the lifting assembly 41 is connected to the molecular sieve 43 via the fixing assembly 42, and an electronic scale 44 is positioned between the fixing assembly 42 and the molecular sieve 43. The electronic scale 44 is used to monitor the mass change of the molecular sieve 43 before and after water absorption, and then the water absorption amount is determined by the mass change of the molecular sieve 43 before and after water absorption, thereby reflecting the water content per unit area of ​​the tested object. The driving assembly 45 has a fixing assembly 42 at its execution end for gripping the molecular sieve 43. The two driving assemblies 45 are respectively mounted on the mounting support. At both ends of the frame 11, a vacuum drying chamber 47 is located below one of the drive components 45, and a pusher component 46 is installed inside the vacuum drying chamber 47. The drive component 45 located above the vacuum drying chamber 47 is used to transport the molecular sieve 43 on the lifting component 41 into the vacuum drying chamber 47. The purpose of the vacuum drying chamber 47 is to dry the wet molecular sieve 43 after measurement. Between the other drive component 45 and the lifting component 41, there is a collection box 49 and a pusher component 46. The collection box 49 is used to store the dried molecular sieve 43, and the pusher component 46 is located between the collection box 49 and the lifting component 41 and is higher than the vacuum drying chamber 47. The pusher component 46 located next to the lifting component 41 and the drive component 45 located above the vacuum drying chamber 47 cooperate to push the molecular sieve 43 on the lifting component 41 onto the fixing component 42. One end of the roller assembly 48 is located at the bottom side of the vacuum drying chamber 47, and the other end is located below the drive assembly 45 away from the vacuum drying chamber 47. The collection box 49 is also equipped with a pusher assembly 46. The pusher assembly 46 inside the vacuum drying chamber 47 pushes the molecular sieve 43 onto the roller assembly 48, and then the roller assembly 48 transports the dried molecular sieve 43 to the drive assembly 45 away from the vacuum drying chamber 47. The drive assembly 45 away from the vacuum drying chamber 47 then clamps the dried molecular sieve 43 with the fixing assembly 42 below it, and then the drive assembly 45 transports the dried molecular sieve 43 into the collection box 49.

[0032] In a preferred embodiment, the electromagnetic moisture meter 2 uses a Tramex CMEX5 digital moisture meter. It is used to measure the water content inside the object being measured.

[0033] In a preferred embodiment, the molecular sieve 43 is a 3A molecular sieve used to adsorb non-flowing water present in the test object.

[0034] In a preferred embodiment, the vacuum drying oven 47 uses a drying assembly of model Memmert VO. The molecular sieve 43, moistened after measurement, is used for drying.

[0035] In a preferred embodiment, the fixing component 42 includes a base 421, an electric cylinder III 422, and an extrusion block 423. The base 421 is provided with electric cylinder III 422 at both ends, and the extrusion block 423 is provided at the end of the electric cylinder III 422. The extension and retraction of the electric cylinder III 422 drives the extrusion block 423 to extend and retract, thereby achieving the purpose of clamping and releasing the molecular sieve 43.

[0036] In a preferred embodiment, the lifting assembly 41 includes a motor 411 and a screw 412. The motor 411 is mounted on the storage platform 12 and is powered by the screw 412. The base 421 of the fixing assembly 42, which is assembled with the lifting assembly 41, is threadedly connected to the screw 412 to form a threaded transmission, and an electronic scale 44 is mounted on the base 421. One end of the screw 412 is powered by the motor 411, and the other end is rotatably mounted on the mounting bracket 11.

[0037] In a preferred embodiment, the drive assembly 45 includes a linear drive module 451 and an electric cylinder I 452. The linear drive module 451 is mounted on the mounting bracket 11 and the moving end of the linear drive module 451 is provided with an electric cylinder I 452. The telescopic end of the electric cylinder I 452 is fixedly connected to the base 421 of the fixing assembly 42 for gripping the molecular sieve 43.

[0038] In a preferred embodiment, the linear drive module 451 includes a guide rail and a linear motor. The guide rail is mounted on the mounting bracket 11, and the linear motor cooperates with the guide rail. The linear drive module 451 is not limited to the linear motor drive mode, but can also be a linear drive component such as a lead screw drive or a cylinder.

[0039] In a preferred embodiment, the pushing assembly 46 includes an electric cylinder II 461 and a pushing block 462. The electric cylinder II 461 has the pushing block 462 at its telescopic end and the other end as a mounting part. The mounting part of the pushing assembly 46 located inside the vacuum drying oven 47 is located at the lower end of the vacuum drying oven 47 and is used to push the dried molecular sieve 43 onto the roller assembly 48. The mounting part of the pushing assembly 46 located on the side of the lifting assembly 41 is located on the baffle 13. This pushing assembly 46 is used to push the molecular sieve 43 out of the lifting assembly 41. The mounting part of the pushing assembly 46 located inside the collection box 49 is located at the lower end of the collection box 49 and is used to push the dried molecular sieve 43 onto the fixing assembly 42 on the lifting assembly 41 away from the vacuum drying oven 47.

[0040] In a preferred embodiment, the bottom and sides of the vacuum drying oven 47 are hinged with door panels by torsion springs 471. The opening of the side door panel is the same size as the molecular sieve 43, and the opening of the side door panel faces the pushing end of the pushing component 46 inside the vacuum drying oven 47. The door panel is designed to facilitate the transport of the wet molecular sieve 43 into the vacuum drying oven 47 and the transport of the dried molecular sieve 43 out of the vacuum drying oven 47. At the same time, the door panel can automatically close after the action of the torsion spring 471 is completed, providing a sealed space for drying the molecular sieve 43.

[0041] In a preferred embodiment, the turbine flow meter assembly 3 includes a funnel 31, a water pipe 32, and a turbine flow meter 33. The funnel 31 is located at the end of the housing 1, and the water pipe 32 is connected to the narrow end of the funnel 31. The turbine flow meter 33 is disposed inside the water pipe 32. The funnel 31 is used to introduce the flowing water from the surface of the object to be measured into the water pipe 32, and then the turbine flow meter 33 disposed in the water pipe 32 measures the flow rate of the flowing water on the surface of the object. The flow rate of the flowing water on the surface of the object reflects the amount of water seepage from the object.

[0042] As a preferred embodiment, the turbine flow meter 33 used is an Emerson Rosemount 8800 flow measurement component.

[0043] In a preferred embodiment, the bottom of the inner side of the collection box 49 has a through hole of the same size as the molecular sieve 43. The collection box 49 is located on the side of the baffle 13 and on the storage platform 12. The collection box 49 has a partition inside to separate the pushing component 46 and the storage space of the molecular sieve 43. The through hole is located on the opposite side of the pushing component 46 and the partition inside the collection box 49. The design of the through hole facilitates the transport of the dried molecular sieve 43 to the fixing component 42 on the lifting component 41.

[0044] The working principle of this invention is as follows: When there is no moisture on the surface of the object being tested, the electromagnetic moisture meter 2 can measure the water content inside the object. The electromagnetic moisture meter 2 contains an electromagnetic transmitter and a receiver. The electromagnetic transmitter generates an alternating electromagnetic field on or inside the material. When water molecules inside the material are acted upon by the electromagnetic field, the dielectric constant of the material changes. When the electromagnetic field passes through the material being tested, the capacitance of the receiving coil changes due to the change in the dielectric constant. The higher the moisture content, the greater the induced capacitance change. The receiving coil converts the detected capacitance change signal into an electrical signal, which is then processed by internal electronic circuitry, ultimately converting these signals into a numerical value proportional to the moisture content and displayed.

[0045] When there is flowing water on the surface of the object being tested, the flowing water is first introduced into the water pipe 32 through the funnel 31, and then the flow rate of the flowing water on the surface of the object is measured by the turbine flow meter 33 installed in the water pipe 32. The flow rate of the flowing water on the surface of the object reflects the amount of water seepage of the object.

[0046] When there is no flowing water on the surface of the object being tested, the molecular sieve 43 at the bottom of the collection box 49 is first pushed by the pushing component 46 inside the collection box 49 to the lifting end of the lifting component 41 and the base 421 of the fixing component 42. Then, the electric cylinder III 422 drives the extrusion block 423 to fix the molecular sieve 43. Then, the motor 411 drives the screw 412 to lift the molecular sieve 43 to the outside of the device shell, and then the testing device is picked up manually. The molecular sieve 43 absorbs non-flowing water from the surface of the object being tested. The water absorption is then measured by reading the electronic scale 44, converting the absorbed water into the water content per unit area of ​​the object, thus achieving moisture detection. After the test, the motor 411 drives the screw 412, lowering the molecular sieve 43 to the same height as the pushing assembly 46 adjacent to the lifting assembly 41. The pushing assembly 46 then pushes the molecular sieve 43 onto the fixed assembly 42 on the drive assembly 45 above the vacuum drying oven 47. Simultaneously, the pushing assembly 46 pushes the molecular sieve 43, and the drive assembly 45 above the vacuum drying oven 47, driven by a linear motor, moves the molecular sieve 43 towards the fixed assembly 42. 3. When the fixed component 42 on the drive assembly 45 above the vacuum drying oven 47 fixes the molecular sieve 43, the electric cylinder I 452 transports the molecular sieve 43 into the vacuum drying oven 47. After the wet molecular sieve 43 is dried inside the vacuum drying oven 47, the pusher assembly 46 inside the vacuum drying oven 47 pushes the molecular sieve 43 onto the roller assembly 48. The roller assembly 48 then transports the dried molecular sieve 43 to the drive assembly 45, which is away from the vacuum drying oven 47. The drive assembly 45, which is away from the vacuum drying oven 47, clamps the dried molecular sieve 43 with the fixed component 42 below it. Then, the linear drive module 451 and the electric cylinder I 452 transport the dried molecular sieve 43 into the collection box 49.

[0047] 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 moisture detection device, comprising a housing (1), an electromagnetic moisture meter (2), a turbine flow meter assembly (3), and a water absorption detection device (4), wherein the housing (1) is provided with a mounting bracket (11), the mounting bracket (11) is provided with a storage platform (12), and the storage platform (12) is provided with a baffle (13) in the middle, characterized in that: The electromagnetic moisture meter (2) and the turbine flow meter assembly (3) are respectively installed at both ends of the outer casing (1), and the water absorption detection device (4) is installed inside the outer casing (1); The water absorption detection device (4) includes a lifting component (41), a fixing component (42), a molecular sieve (43), an electronic scale (44), a driving component (45), a pushing component (46), a vacuum drying oven (47), a roller assembly (48), and a collection box (49). The lifting component (41) is set on the storage platform (12). The lifting end of the lifting component (41) is equipped with the molecular sieve (43) through the fixing component (42), and the electronic scale (44) is set between the fixing component (42) and the molecular sieve (43). The driving component (45) has a fixing component (42) at its execution end. The two driving components (45) are respectively set on the mounting bracket. (11) At both ends, a vacuum drying chamber (47) is provided below one of the drive components (45) and a pusher component (46) is provided inside the vacuum drying chamber (47). A collection box (49) and a pusher component (46) are provided between the other drive component (45) and the lifting component (41). The pusher component (46) is located between the collection box (49) and the lifting component (41) and is higher than the vacuum drying chamber (47). One end of the roller assembly (48) is located at the bottom of the side of the vacuum drying chamber (47) and the other end is located below the drive component (45) away from the vacuum drying chamber (47). The pusher component (46) is also provided inside the collection box (49).

2. The moisture detection device according to claim 1, characterized in that: The fixing component (42) includes a base (421), an electric cylinder III (422) and a pressing block (423). The base (421) is provided with electric cylinder III (422) at both ends, and the pressing block (423) is provided at the end of the electric cylinder III (422).

3. A moisture detection device according to claim 2, characterized in that: The lifting assembly (41) includes a motor (411) and a screw (412). The motor (411) is mounted on the storage platform (12) and is poweredly connected to the screw (412). The base (421) of the fixing assembly (42) assembled with the lifting assembly (41) is threadedly connected to the screw (412) to form a threaded transmission, and an electronic scale (44) is provided on the base (421).

4. A moisture detection device according to claim 3, characterized in that: The drive assembly (45) includes a linear drive module (451) and an electric cylinder I (452). The linear drive module (451) is mounted on the mounting bracket (11), and the moving end of the linear drive module (451) is provided with an electric cylinder I (452). The telescopic end of the electric cylinder I (452) is fixedly connected to the base (421) of the fixing assembly (42).

5. A moisture detection device according to claim 4, characterized in that: The pushing assembly (46) includes an electric cylinder II (461) and a pusher block (462). The electric cylinder II (461) has a pusher block (462) at its telescopic end and a mounting part at the other end. The mounting part of the pushing assembly (46) located inside the vacuum drying oven (47) is located at the lower end of the vacuum drying oven (47). The mounting part of the pushing assembly (46) located on the side of the lifting assembly (41) is located on the baffle (13). The mounting part of the pushing assembly (46) located inside the collection box (49) is located at the lower end of the collection box (49).

6. A moisture detection device according to claim 5, characterized in that: The vacuum drying oven (47) has door panels hinged to its bottom and sides by torsion springs (471). The opening of the side door panel is the same size as the molecular sieve (43), and the opening of the side door panel faces the pushing end of the pushing assembly (46) inside the vacuum drying oven (47).

7. A moisture detection device according to claim 5, characterized in that: The turbine flow meter assembly (3) includes a funnel (31), a water pipe (32) and a turbine flow meter (33). The funnel (31) is located at the end of the housing (1). The water pipe (32) is connected to the narrow end of the funnel (31). The turbine flow meter (33) is disposed inside the water pipe (32).

8. A moisture detection device according to claim 1, characterized in that: The bottom of the inner side of the collection box (49) has a through hole of the same size as the molecular sieve (43).

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