CN220671344U

CN220671344U - Sensor

Info

Publication number: CN220671344U
Application number: CN202321593641.3U
Authority: CN
Inventors: 覃东; 周锦威; 黄志耀
Original assignee: Audiowell Electronics Guangdong Co ltd
Current assignee: Audiowell Electronics Guangdong Co ltd
Priority date: 2023-06-21
Filing date: 2023-06-21
Publication date: 2024-03-26
Anticipated expiration: 2033-06-21

Abstract

The utility model relates to the technical field of liquid concentration measurement and discloses a sensor, which comprises a reflecting cylinder and a cover body, wherein a containing cavity used for communicating with the outside is arranged in the reflecting cylinder, an installation seat is covered at an opening of the upper end of the containing cavity, a sealing piece is arranged above the installation seat in a fitting mode, the cover body is sealed by the sealing piece and the installation seat in an extrusion mode and is fixed with the reflecting cylinder, an installation cavity is arranged in the installation seat, a transduction piece assembly is arranged in the installation cavity, and the transduction piece assembly is fixed with the installation cavity through a sealing layer in a sealing mode. The utility model has the beneficial effects that: the tightness is good, and the service life of the sensor is prolonged.

Description

Sensor

Technical Field

The utility model relates to the technical field of liquid concentration measurement, in particular to a sensor.

Background

At present, ultrasonic waves are generally generated by the transduction piece assembly to measure the concentration of liquid, and in the actual measurement process, water vapor or detection solution is found to enter the sensor easily through the cover body and infiltrates into the transduction piece assembly, so that the internal circuit of the sensor is invalid, and the service life of the sensor is short.

Disclosure of Invention

The purpose of the utility model is that: the sensor aims to solve the technical problems of poor sealing performance and low service life of the sensor in the prior art.

In order to achieve the above purpose, the utility model provides a sensor, which comprises a reflecting cylinder and a cover body, wherein a containing cavity for communicating with the outside is arranged in the reflecting cylinder, an installation seat is covered at an opening of the upper end of the containing cavity, a sealing piece is arranged above the installation seat in a fitting way, the cover body is sealed by extrusion through the sealing piece and the installation seat, the cover body is fixed with the reflecting cylinder, an installation cavity is arranged in the installation seat, a transduction piece assembly is arranged in the installation cavity, and the transduction piece assembly is fixed with the installation cavity through a sealing layer which is encapsulated.

Still further, the bottom surface of installation cavity is equipped with the adhesive layer, the transduction piece subassembly include with the transduction piece that the laminating of adhesive layer top surface set up, transduction piece top electricity is connected with the circuit board, the one end electricity of circuit board and signal line is connected, the other end of signal line runs through the lid extends to outside the lid.

Furthermore, the side wall part of the cover body extends outwards to form a line passing part, a line passing opening communicated with the inside of the cover body is axially formed in the line passing part, a hose is sleeved on the part, located outside the cover body, of the signal line, and a lock nut is coaxially arranged outside the hose.

Still further, lock nut includes threaded connection end and joint end, threaded connection end cover is located outside the line portion, and with the outer wall threaded connection of line portion, the joint end cover is established outside the hose, and with the outer wall joint of hose is fixed.

Furthermore, a plurality of clamping bosses are arranged on the inner wall of the clamping end along the axial direction at intervals.

Still further, the sealing layer includes from bottom to top stack the first damping layer that sets up and second damping layer, first damping layer is used for with the transduction piece with the installation cavity is fixed, the second damping layer is used for with circuit board, signal line with the installation cavity is fixed.

Still further, be equipped with in the installation cavity and be used for the step face of circuit board installation location, the step face will the installation cavity is divided into first cavity and second cavity, first damping layer is located in the first cavity, the second damping layer is located in the second cavity.

Furthermore, a limit groove for installing and positioning the sealing element is formed in the lower end of the cover body.

Further, the sealing member is provided with a wire passing hole for the signal wire to pass through.

Furthermore, the outer wall of the mounting seat is provided with a positioning step used for limiting the mounting of the reflecting cylinder and the cover body.

Compared with the prior art, the sensor provided by the embodiment of the utility model has the beneficial effects that: the cover body and the mounting seat are sealed by adopting the sealing piece, so that external moisture is prevented from entering the sensor through the mounting gap between the cover body and the mounting seat, meanwhile, the transduction piece assembly is sealed by adopting the encapsulated sealing layer, the moisture can be prevented from entering the transduction piece assembly, the multiple sealing between the sensor and the outside and between the sensor and the inside is realized, and the sealing effect is good; in addition, the hose is sleeved outside the signal wire, and the locking nut and the cover body are adopted for fixing, so that the outlet is sealed, the sealing performance of the sensor is further improved, the structure is stable and reliable, and the service life of the sensor can be prolonged.

Drawings

FIG. 1 is a schematic diagram of a sensor according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a sensor mounting base according to an embodiment of the present utility model

FIG. 3 is a schematic view of the mounting of a transduction tab assembly of a sensor according to an embodiment of the present utility model

Fig. 4 is a schematic structural view of a cover of the sensor according to the embodiment of the present utility model.

In the figure, 1, a reflecting cylinder; 11. a receiving chamber; 2. a cover body; 21. a wire passing portion; 211. a wire passing port; 22. a limit groove; 3. a mounting base; 31. a mounting cavity; 310. a step surface; 311. a first cavity;

312. a second cavity; 4. a seal; 5. a transduction piece assembly; 51. a transduction piece; 52. a wiring board 53, a signal line; 54. a hose; 6. a sealing layer; 61. a first damping layer; 62. a second damping layer; 7. an adhesive layer; 8. a lock nut; 81. a threaded connection end; 82. the clamping end 821 and the clamping boss.

Detailed Description

The following describes in further detail the embodiments of the present utility model with reference to the drawings and examples. The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.

In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "inner", "outer", etc. in the present utility model are based on the positional relationship shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices and elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should be understood that the terms "first", "second", etc. are used in the description of various information, but the information should not be limited to these terms, which are only used to distinguish the same type of information from each other. For example, a "first" message may also be referred to as a "second" message, and similarly, a "second" message may also be referred to as a "first" message, without departing from the scope of the utility model.

As shown in fig. 1, a sensor of a preferred embodiment of the utility model comprises a reflection cylinder 1 and a cover body 2, wherein a containing cavity 11 used for being communicated with the outside is arranged in the reflection cylinder 1, an opening is arranged on the containing cavity 11 so that water vapor generated by urea solution enters the containing cavity 11, an installation seat 3 is covered at the opening of the upper end of the containing cavity 11, a sealing piece 4 is attached above the installation seat 3 to realize the sealing of the cover body 2 and the installation seat 3, the cover body 2 is pressed and sealed through the sealing piece 4 and the installation seat 3 and is fixed with the reflection cylinder 1, an installation cavity 31 is arranged in the installation seat 3, a transduction piece assembly 5 is arranged in the installation cavity 31, and the influence of the water vapor on the internal circuit of the transduction piece assembly 5 is avoided, and the transduction piece assembly 5 and the installation cavity 31 are fixed through a sealing layer 6 for encapsulation.

When the concentration of the liquid is detected by the sensor, the water vapor generated by the liquid to be detected passes through the sensor through the opening on the accommodating cavity 11, the ultrasonic wave can be generated by the transducer assembly 5, the ultrasonic wave can be reflected by the mounting seat 3 and the reflection cylinder 1, and the transducer assembly 5 receives the ultrasonic wave reflected signal again. The transducer assembly 5 is typically connected to an external controller, by which the ultrasonic signal and the ultrasonic reflected signal can be processed (e.g., by calculating the time interval between the ultrasonic signal and the ultrasonic reflected signal) to determine the concentration of the liquid.

Further, in order to facilitate the installation of the transducer assembly 5, meanwhile, the influence of vibration on the measuring precision of the transducer is reduced, an adhesive layer 7 is arranged on the bottom surface of the installation cavity 31, the transducer assembly 5 comprises a transducer 51 attached to the top surface of the adhesive layer 7, a circuit board 52 is electrically connected above the transducer 51, one end of the circuit board 52 is electrically connected with one end of a signal wire 53, and the other end of the signal wire 53 penetrates through the cover body 2 to extend out of the cover body 2 and is electrically connected with an external controller.

Referring to fig. 1 and 4, since the signal line 53 penetrates through the cover 2, the sealing member 4 is provided with a line passing hole through which the signal line 53 passes, in order to seal between the signal line 53 and the cover 2, a side wall of the cover 2 extends partially outwards to form a line passing portion 21, a line passing opening 211 communicated with the inside of the cover 2 is axially formed in the line passing portion 21, a hose 54 is sleeved on a portion of the signal line 53 passing through the line passing opening 211 and located outside the cover 2, and a locking nut 8 is coaxially arranged outside the hose 54. Further, the lock nut 8 includes a threaded connection end 81 and a clamping end 82, the threaded connection end 81 is sleeved outside the wire passing portion 21 and is in threaded connection with the outer wall of the wire passing portion 21, the clamping end 82 is sleeved outside the hose 54 and is clamped and fixed with the outer wall of the hose 54, and the signal wire 53 can be extruded and sealed.

In this embodiment, a plurality of engaging bosses 821 for engaging with the outer wall of the hose 54 are provided on the inner wall of the engaging end 82 at intervals in the axial direction.

Specifically, referring to fig. 3, the sealing layer 6 fixes the entire transduction tab assembly 5, and the sealing layer 6 includes a first damping layer 61 and a second damping layer 62 stacked from bottom to top, the first damping layer 61 being used to fix the transduction tab 51 and the mounting cavity 31, and the second damping layer 62 being used to fix the circuit board 52, the signal line 53 and the mounting cavity 31. Further, in order to mount and position the circuit board 52, a step surface 310 is disposed in the mounting cavity 31, the step surface 310 divides the mounting cavity 31 into a first cavity 311 and a second cavity 312, the first damping layer 61 is disposed in the first cavity 311, and the second damping layer 62 is disposed in the second cavity 312.

Further, in order to facilitate the installation and positioning of the sealing element 4, the lower end of the cover body 2 is provided with a limiting groove 22 for installing the sealing element 4, and the sealing element 4 is usually made of a rubber material, and can be elastically deformed under the condition of extrusion stress.

Furthermore, in order to facilitate the limit of the mounting seat 3 when being mounted with the reflecting cylinder 1 and the cover body 2, as shown in fig. 1 and 2, a positioning step for limiting the mounting of the reflecting cylinder 1 and the cover body 2 is arranged on the outer wall of the mounting seat 3.

In summary, the embodiment of the utility model provides a sensor, wherein a sealing piece is adopted to seal a cover body and an installation seat, so that external moisture is prevented from entering the sensor through an installation gap between the cover body and the installation seat, meanwhile, a transduction piece assembly is sealed by adopting a sealing layer for filling and sealing, the moisture is prevented from entering the transduction piece assembly, multiple sealing between the sensor and the outside and between the sensor and the inside is realized, and the sealing effect is good; in addition, the hose is sleeved outside the signal wire, and the locking nut and the cover body are adopted for fixing, so that the outlet is sealed, the sealing performance of the sensor is further improved, the structure is stable and reliable, and the service life of the sensor can be prolonged.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present utility model, and these modifications and substitutions should also be considered as being within the scope of the present utility model.

Claims

1. A sensor, characterized in that: the reflection type solar energy reflection device comprises a reflection cylinder (1) and a cover body (2), wherein an accommodating cavity (11) used for being communicated with the outside is formed in the reflection cylinder (1), an installation seat (3) is arranged at an opening of the upper end of the accommodating cavity (11) in a covering mode, a sealing piece (4) is arranged above the installation seat (3) in a fit mode, the cover body (2) is in extrusion sealing through the sealing piece (4) and the installation seat (3) and is fixed with the reflection cylinder (1), an installation cavity (31) is formed in the installation seat (3), a transduction piece assembly (5) is arranged in the installation cavity (31), and the transduction piece assembly (5) is fixed with the installation cavity (31) through a sealing layer (6) which is encapsulated;

the bottom surface of installation cavity (31) is equipped with adhesive layer (7), transduction piece subassembly (5) include with transduction piece (51) of adhesive layer (7) top surface laminating setting, transduction piece (51) top electricity is connected with circuit board (52), circuit board (52) are connected with the one end electricity of signal line (53), the other end of signal line (53) runs through lid (2) extends to outside lid (2).

2. The sensor of claim 1, wherein: the side wall part of the cover body (2) extends outwards to form a wire passing part (21), a wire passing opening (211) communicated with the inside of the cover body (2) is axially formed in the wire passing part (21), a signal wire (53) penetrates through the wire passing opening (211) and is positioned outside the cover body (2) in a part sleeved with a hose (54), and a locking nut (8) is coaxially arranged outside the hose (54).

3. The sensor of claim 2, wherein: the locking nut (8) comprises a threaded connection end (81) and a clamping end (82), wherein the threaded connection end (81) is sleeved outside the wire passing portion (21) and is in threaded connection with the outer wall of the wire passing portion (21), and the clamping end (82) is sleeved outside the hose (54) and is fixedly clamped with the outer wall of the hose (54).

4. A sensor according to claim 3, wherein: the inner wall of the clamping end (82) is provided with a plurality of clamping bosses along the axial direction at intervals.

5. The sensor of claim 1, wherein: the sealing layer (6) comprises a first damping layer (61) and a second damping layer (62) which are stacked from bottom to top, the first damping layer (61) is used for fixing the transduction piece (51) and the mounting cavity (31), and the second damping layer (62) is used for fixing the circuit board (52), the signal wire (53) and the mounting cavity (31).

6. The sensor of claim 5, wherein: the mounting cavity (31) is internally provided with a step surface (310) for mounting and positioning the circuit board (52), the step surface (310) divides the mounting cavity (31) into a first cavity (311) and a second cavity (312), the first damping layer (61) is positioned in the first cavity (311), and the second damping layer (62) is positioned in the second cavity (312).

7. The sensor of claim 1, wherein: the lower end of the cover body (2) is provided with a limit groove (22) for installing and positioning the sealing element (4).

8. The sensor of claim 1, wherein: and a wire passing hole for the signal wire (53) to pass through is formed in the sealing piece (4).

9. The sensor of claim 1, wherein: the outer wall of the mounting seat (3) is provided with a positioning step used for limiting the installation of the reflecting cylinder (1) and the cover body (2).