CN217504920U

CN217504920U - Box cover

Info

Publication number: CN217504920U
Application number: CN202220778472.XU
Authority: CN
Inventors: 傅玉燕; 叶柏村; 李启圣
Original assignee: Dongguan Zhengyang Electronic Mechanical Co ltd
Current assignee: Guangdong Zhengyang Sensor Technology Co ltd
Priority date: 2022-04-06
Filing date: 2022-04-06
Publication date: 2022-09-27
Anticipated expiration: 2032-04-06

Abstract

The utility model relates to the technical field of liquid level detection, in particular to a box body cover, which comprises a cover body and a detection assembly, wherein, an installation cavity is arranged in the cover body, the cover body is provided with a detection hole communicated with the installation cavity, and the cover body can cover a filling port of a box body; the detection assembly is arranged in the installation cavity and detects the height of liquid in the box body through the detection hole. The detection assembly is arranged on the cover body, and the thickness of the filling port is large, so that the detection assembly has enough anti-vibration strength, vibration of the detection assembly along with vibration of the box body is avoided, and output of the detection assembly is more stable. In addition, after the detection assembly and the cover body are integrated, only one set of die is needed, the cost is saved, and only one position needs to be sealed when the detection assembly and the cover body are sealed with the box body, so that the sealing cost is reduced, and the overall sealing performance of the box body is improved.

Description

Box cover

Technical Field

The utility model relates to a liquid level detection technical field especially relates to a box lid.

Background

In modern industrial production, it is often necessary to measure the level of a liquid in a vessel. Ultrasonic detectors are widely used because of their advantages of high accuracy, small size, reliable signal processing, etc.

In the prior art, the ultrasonic sensor is generally arranged at the top of the box body, and the structure of the top of the box body is thin, so that the ultrasonic sensor can vibrate along with the structure in the practical application process due to vibration, and errors are generated. In addition, the ultrasonic liquid level sensor and the upper cover of the box body are independent parts, and two parts need to be developed; and two holes are required to be formed in the box body to respectively mount the ultrasonic liquid level sensor and the upper cover of the box body, and the ultrasonic liquid level sensor and the upper cover of the box body are sealed independently, so that the complexity of box body design and mold design is increased, and the manufacturing cost is increased.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a box lid to solve ultrasonic sensor and lid components of a whole that can function independently design cost height, and the easy problem of producing the error.

In order to achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides a box cover, this box cover includes:

the detection device comprises a cover body, a detection device and a detection device, wherein an installation cavity is arranged in the cover body, the cover body is provided with a detection hole penetrating through the installation cavity, and the cover body can cover a filling port of a box body;

and the detection assembly is arranged in the installation cavity and is used for detecting the height of the liquid in the box body through the detection hole.

Preferably, the cap body includes:

a first cover body; the first cover body is provided with the detection hole and a first liquid hole; the first cover body is arranged on the filling port of the box body in a covering manner;

the second cover body is provided with a second liquid hole, and the second cover body is provided with a communicating pipe communicated with the second liquid hole; the second cover body is covered on the first cover body, and the communicating pipe penetrates through the first liquid hole; the first cover body and the second cover body are enclosed into the installation cavity;

and a sealing member for sealing the communication pipe.

Preferably, the box cover further comprises a signal optimization tube, and the signal optimization tube is fixed on the first cover body and is communicated with the detection hole.

Preferably, the detection assembly comprises a circuit board and an ultrasonic sensor, the ultrasonic sensor is arranged on the circuit board, the circuit board is fixed in the installation cavity, and the ultrasonic sensor can detect the height of the liquid level in the box body through the detection hole.

Preferably, the circuit board is provided with a first through hole, and the communication pipe penetrates through the first through hole.

Preferably, the circuit board is provided with a second through hole, and the probe of the ultrasonic sensor passes through the second through hole.

Preferably, the first cover body is clamped with the second cover body.

Preferably, the first cover body is provided with a first positioning part, and the second cover body is provided with a second positioning part; when the second cover body is covered on the first cover body, the first positioning part is matched with the second positioning part.

Preferably, the box cover further comprises a first sealing ring, and the first sealing ring is arranged between the first cover body and the second cover body.

Preferably, the sealing element comprises a sealing cover and a stud arranged on the sealing cover, a thread is arranged in the communicating pipe, the stud is in threaded connection with the communicating pipe, and the sealing cover is used for plugging the communicating pipe.

The utility model has the advantages that:

the utility model provides a box body cover, which comprises a cover body and a detection assembly, wherein, an installation cavity is arranged in the cover body, the cover body is provided with a detection hole communicated with the installation cavity, and the cover body can cover a filling port of a box body; the detection assembly is arranged in the installation cavity and detects the height of liquid in the box body through the detection hole. The detection assembly is arranged on the cover body, and the thickness of the filling port is large, so that the detection assembly has enough anti-vibration strength, vibration of the detection assembly along with vibration of the box body is avoided, and output of the detection assembly is more stable. In addition, after the detection assembly and the cover body are integrated, only one set of die is needed, the cost is saved, and only one position needs to be sealed when the detection assembly and the cover body are sealed with the box body, so that the sealing cost is reduced, and the overall sealing performance of the box body is improved.

Drawings

Fig. 1 is an exploded schematic view of a box cover in an embodiment of the present invention;

FIG. 2 is a schematic structural view of a case cover in an embodiment of the present invention;

FIG. 3 is a schematic view of the internal structure of the case cover in the embodiment of the present invention;

fig. 4 is a schematic structural view illustrating the signal optimizing tube and the first cover body integrally formed in the embodiment of the present invention;

fig. 5 is a schematic structural view illustrating the signal optimizing tube and the first cover body separately according to an embodiment of the present invention.

In the figure:

1. a first cover body; 11. a first liquid hole; 12. detecting holes; 13. a first positioning portion; 14. a cable hole;

2. a second cover body; 21. a second liquid hole; 22. a second positioning portion; 23. a communicating pipe;

3. a detection component; 31. a circuit board; 311. a first through hole; 312. a second through hole; 32. an ultrasonic sensor; 321. a probe;

4. a seal member; 5. a signal optimizing tube; 51. flanging; 52. fastening screws; 6. a first seal ring.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element 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 invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Where the terms "first position" and "second position" are two different positions, and where a first feature is "over", "above" and "on" a second feature, it is intended that the first feature is directly over and obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

As shown in fig. 1-3, the present embodiment provides a box cover, which includes a cover body and a detection assembly 3, wherein a mounting cavity is disposed in the cover body, the cover body is provided with a detection hole 12 penetrating to the mounting cavity, and the cover body can cover a filling port of the box; the detection component 3 is arranged in the installation cavity and detects the liquid height in the box body through the detection hole 12. In this embodiment, the tank body may be a urea tank or an oil tank. Of course, in other embodiments, the box body may also be a container for containing other substances, and is not limited to this. In this embodiment, to survey subassembly 3 and locate on the lid body, because the thickness of filling port department is great, possess sufficient anti vibration intensity, avoided surveying the subassembly and along with the vibration of box takes place the vibration, and then make the output of surveying the subassembly more stable. In addition, after the detection assembly and the cover body are integrated, only one set of die is needed, the cost is saved, and only one position needs to be sealed when the detection assembly and the cover body are sealed with the box body, so that the sealing cost is reduced, and the overall sealing performance of the box body is improved.

Optionally, the cover body comprises a first cover 1, a second cover 2 and a seal 4. Wherein, the first cover body 1 is provided with a detection hole 12 and a first liquid hole 11; the first cover body 1 is arranged on a filling opening of the box body in a covering mode. The second cover body 2 is provided with a second liquid hole 21, and the second cover body 2 is provided with a communicating pipe 23 communicated with the second liquid hole 21; the second cover body 2 is covered on the first cover body 1, and the communicating pipe 23 passes through the first liquid hole 11; the first cover body 1 and the second cover body 2 enclose to form an installation cavity. The packing 4 is used to seal the communication pipe 23. Optionally, the first cover 1 is provided with a cable hole 14 penetrating to the installation cavity, and a cable connected to the detection assembly 3 is penetrated through the cable hole 14. In this embodiment, the first cover 1 has a slot, the second cover 2 has a buckle, and the first cover 1 is connected to the second cover 2. Of course, in other embodiments, the first cover 1 and the second cover 2 may be screwed or bonded. Of course, in other embodiments of this embodiment, the first cover body 1 and the second cover body 2 may also be integrally formed, and in view of flexibility of the overall processing and assembling process, a technical solution of the bracket-clamping of the first cover body 1 and the second cover body 2 is preferred in this embodiment, and the following description is also provided for this technical solution.

Preferably, the first cover 1 is provided with a first positioning portion 13, and the second cover 2 is provided with a second positioning portion 22; when the second cover 2 is covered on the first cover 1, the first positioning portion 13 and the second positioning portion 22 are engaged with each other. The arrangement of the above structure can improve the connection accuracy of the first cover body 1 and the second cover body 2.

Regarding the structure of the detection assembly 3, in this embodiment, optionally, the detection assembly 3 includes a circuit board 31 and an ultrasonic sensor 32, the ultrasonic sensor 32 is disposed on the circuit board 31, the circuit board 31 is fixed in the installation cavity, and the ultrasonic sensor 32 can detect the liquid level in the tank through the detection hole 12. The circuit board 31 is provided with a circuit and a controller, and the controller is in communication connection with the ultrasonic sensor 32 to analyze and process the liquid level height information transmitted by the ultrasonic sensor 32. Specifically, the ultrasonic sensor 32 can transmit and receive ultrasonic waves, air is used as a medium, the time difference of echoes is compared, the liquid level can be obtained through calculation of the controller, and the liquid level height can be calculated according to the depth of the tank body.

In order to improve the transmission effect of the ultrasonic waves, in this embodiment, the box cover further includes a signal optimization tube 5, and the signal optimization tube 5 is fixed to the first cover body 1 and is communicated with the detection hole 12. The signal optimizing tube 5 is beneficial to increasing concentrated conduction, plays a role in optimizing signals and improves the detection effect of ultrasonic waves. In this embodiment, the signal optimizing pipe 5 may be made of metal or liquid corrosion resistant plastic. Preferably, the signal optimizing tube 5 is made of stainless steel. In one embodiment, as shown in fig. 4, the signal optimizing pipe 5 is integrally formed with the first cover 1. In another embodiment, as shown in fig. 5, the signal optimizing pipe 5 is screwed to the first cover 1 by screws. Specifically, the end of the signal optimizing pipe 5 is provided with a flange 51, the flange 51 is provided with a fixing hole, and a fastening screw 52 passes through the fixing hole and is screwed with a fixing screw hole on the first cover 1.

In this embodiment, optionally, the circuit board 31 is provided with a mounting hole, and a fixing screw passes through the mounting hole to be screwed to the second cover 2 or the first cover 1, and preferably, the circuit board 31 is screwed to the first cover 1 by the fixing screw. The screw connection makes the circuit board 31 firmly mounted. Of course, in other embodiments, the circuit board 31 may also be snapped or adhered to the second cover 2 or the first cover 1.

Preferably, the circuit board 31 is provided with a first through hole 311, and the communication pipe 23 passes through the first through hole 311. The arrangement of the first through hole 311 enables the circuit board 31 to be in an annular structure, the space of the installation cavity is fully utilized, the area of the circuit board 31 is enlarged, and the stability of the circuit board 31 is improved through the matching of the communicating pipe 23 and the first through hole 311. Optionally, the circuit board 31 is provided with a positioning groove, the first cover body 1 is provided with a positioning pin, and the positioning groove can be clamped with the positioning pin.

In this embodiment, optionally, the circuit board 31 is provided with a second through hole 312, the ultrasonic sensor 32 is located on the upper side of the circuit board 31, and the probe 321 of the ultrasonic sensor 32 passes through the second through hole 312. This arrangement makes the mounting of the ultrasonic sensor 32 more secure and facilitates the communication connection with the circuit board 31. Alternatively, the probe 321 and the body of the ultrasonic sensor 32 are connected by a wire.

The probe 321 includes a piezoelectric patch module, which includes a piezoelectric patch, a wave-absorbing layer, a transmission layer, and a piezoelectric patch signal conductor. Preferably, the probe 321 partially extends into the signal optimization tube 5, and a sealing sleeve is arranged between the probe 321 and the signal optimization tube 5, so that liquid in the tank body is prevented from entering the installation cavity through a gap between the probe 321 and the signal optimization tube 5.

In order to avoid the installation cavity to be affected with damp, in this embodiment, the box cover further includes a first sealing ring 6, and the first sealing ring 6 is disposed between the first cover body 1 and the second cover body 2. In addition, the box cover further comprises a second sealing ring, and the second sealing ring is arranged between the communicating pipe 23 and the first liquid hole 11. The liquid in the box body can be prevented from entering the installation cavity through the gap between the communicating pipe 23 and the first liquid hole 11 by the arrangement.

Regarding the structure of the sealing member 4, in this embodiment, specifically, the sealing member 4 includes a sealing cover and a stud provided on the sealing cover, a thread is provided in the communication pipe 23, the stud is screwed with the communication pipe 23, and the sealing cover is used for plugging the communication pipe 23. In this embodiment, after the stud is screwed to the communication pipe 23, the sealing cap abuts against the second lid 2 and closes the second liquid hole 21. Optionally, the sealing element 4 further includes a third sealing ring, and the third sealing ring is sleeved on the stud and can seal a gap between the communication pipe 23 and the sealing cover.

Specifically, the second positioning portion 22 is a slot, and the first positioning portion 13 is a protrusion, which can be inserted into the slot. On one hand, the arrangement can improve the accurate connection efficiency of the first cover body 1 and the second cover body 2; in the second aspect, the relative rotation process of the stud and the communication pipe 23 can be prevented from driving the second cover body 2 and the first cover body 1 to rotate relatively, and then the sealing performance of the installation cavity is affected.

When filling the urea tank with urea, the seal 4 needs to be opened first; then, the liquid is injected into the inlet of the communicating tube 23; the liquid enters the urea tank through the outlet of the communicating pipe 23.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A box cover, comprising:

the detection device comprises a cover body, wherein an installation cavity is arranged in the cover body, the cover body is provided with a detection hole (12) penetrating through the installation cavity, and the cover body can cover a filling port of a box body;

and the detection assembly (3) is arranged in the mounting cavity and is used for detecting the height of the liquid in the box body through the detection hole (12).

2. The box cover according to claim 1, wherein the cover body comprises:

a first cover body (1); the first cover body (1) is provided with the detection hole (12) and a first liquid hole (11); the first cover body (1) is arranged on the filling port of the box body in a covering manner;

the second cover body (2), the second cover body (2) is provided with a second liquid hole (21), and the second cover body (2) is provided with a communicating pipe (23) communicated with the second liquid hole (21); the second cover body (2) is arranged on the first cover body (1) in a covering mode, and the communicating pipe (23) penetrates through the first liquid hole (11); the first cover body (1) and the second cover body (2) are enclosed into the installation cavity;

a packing member (4) for packing the communication pipe (23).

3. The box cover according to claim 2, characterized in that it further comprises a signal optimization tube (5), said signal optimization tube (5) being fixed to said first cover body (1) and communicating with said detection hole (12).

4. The box cover according to claim 2, characterized in that the detection assembly (3) comprises a circuit board (31) and an ultrasonic sensor (32), the ultrasonic sensor (32) is arranged on the circuit board (31), the circuit board (31) is fixed in the mounting cavity, and the ultrasonic sensor (32) can detect the liquid level in the box body through the detection hole (12).

5. The case cover according to claim 4, wherein the circuit board (31) is provided with a first through hole (311), and the communication pipe (23) passes through the first through hole (311).

6. The case cover according to claim 4, characterized in that the circuit board (31) is provided with a second through hole (312), and a probe (321) of the ultrasonic sensor (32) passes through the second through hole (312).

7. A box cover according to claim 2, wherein the first cover (1) is snap-fitted to the second cover (2).

8. The box cover according to claim 7, characterized in that the first cover body (1) is provided with a first positioning portion (13), and the second cover body (2) is provided with a second positioning portion (22); when the second cover body (2) is covered on the first cover body (1), the first positioning part (13) is matched with the second positioning part (22).

9. A box cover according to any one of claims 2-8, characterised in that it further comprises a first sealing ring (6), said first sealing ring (6) being provided between the first cover body (1) and the second cover body (2).

10. A tank cover according to any one of claims 2-8, characterized in that the sealing member (4) comprises a sealing cover and a stud arranged on the sealing cover, a thread is arranged in the communicating pipe (23), the stud is in threaded connection with the communicating pipe (23), and the sealing cover is used for sealing the communicating pipe (23).