Glue-filled waterproof liquid level sensor

Abstract

The utility model discloses a glue-pouring waterproof liquid level sensor which comprises a shell, the end face of the inner wall of the shell is in threaded connection with an installation piece, the inner wall of the shell is filled with epoxy resin glue, a control module is arranged in the epoxy resin glue in a wrapping mode, and the epoxy resin glue is electrically connected with a core body through the control module. The core body is arranged inside the mounting part, the end face of the mounting part is in threaded connection with an anti-blocking head, two sealing grooves are formed in the positions, close to the bottom, of the outer wall of the mounting part, the inner walls of the two sealing grooves are sleeved with sealing rings, and the outer walls of the two sealing rings and the inner wall of the shell are arranged in an elastic pressing mode. According to the liquid level sensor, the epoxy resin glue is poured into the liquid level sensor, so that the liquid level sensor wraps the mainboard installed inside, the waterproof effect can be achieved when the liquid level sensor is used, liquid entering the liquid level sensor is prevented from damaging the mainboard inside the liquid level sensor when the liquid level sensor is damaged, and economic losses caused when the liquid level sensor is damaged are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of application of liquid level sensors, in particular to a glue-filled waterproof liquid level sensor. Background Art

[0002] The liquid level sensor generally includes a connecting rod for extending out of the container and a probe arranged at the lower end of the connecting rod, wherein the probe is provided with a sensitive element, which can be deformed when subjected to the pressure of the liquid, thereby generating an analog signal (such as electrical information), and then the analog signal generated by the liquid level sensor is converted into a digital signal by a microcontroller, thereby completing the liquid level measurement in the container.

[0003] Existing liquid level sensors generally have multiple precision parts that use internal sealing rings to seal and protect internal electronic components. The liquid level sensor needs to be placed in the liquid for a long time to detect the liquid level. During long-term use, its internal sealing ring will inevitably be damaged, so that liquid will enter the sensor from the connection, causing water damage to the internal electronic components. Traditional liquid level sensors cannot protect internal electronic components in the event of external damage, which increases the economic cost of replacing the liquid level sensor. Therefore, the utility model proposes a glue-filled waterproof liquid level sensor. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a glue-filled waterproof liquid level sensor. Epoxy resin glue is poured into the liquid level sensor to wrap the main board installed inside, so that it can play a waterproof effect during use, preventing the liquid entering the liquid level sensor when it is damaged from damaging the internal main board, thereby reducing the economic loss caused by the damage of the liquid level sensor.

[0005] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a glue-filled waterproof liquid level sensor, including a shell, a mounting piece is threadedly connected to the end face of the inner wall of the shell, the inner wall of the shell is filled with epoxy resin glue, a control module is wrapped inside the epoxy resin glue, and a core body is electrically connected to the core body through the control module, the core body is arranged inside the mounting piece, and an anti-blocking head is threadedly connected to the end face of the mounting piece.

[0006] The utility model is further configured as follows: two sealing grooves are provided on the outer wall of the mounting piece near the bottom, the inner walls of the two sealing grooves are sleeved with sealing rings, the outer walls of the two sealing rings are elastically pressed against the inner wall of the outer shell, and the end face of the mounting piece extending to the inside of the outer shell is pressed against the end face of the epoxy resin glue.

[0007] Through the above technical solution, two sealing rings can be used to seal the connection between the mounting piece and the shell to prevent the measured liquid from entering the interior of the shell, and the mounting piece can tightly fix the epoxy resin glue filled in the interior of the shell, which can improve the stability and sealing of the epoxy resin glue inside.

[0008] The utility model is further configured as follows: the control module wrapped inside the epoxy resin glue is electrically connected with a connecting wire, and the connecting wire runs through the bottom of the shell, and the contact position therewith is sealed.

[0009] The above technical solution makes it easy to connect to an external power supply device using a connecting wire, and the seal at the connection can prevent external liquid from entering the interior of the housing.

[0010] The utility model is further configured as follows: a threaded connection groove is provided at the top position of the inner wall of the mounting piece, and is threadedly connected to a threaded connection head extending from the bottom of the anti-blocking head through the threaded connection groove.

[0011] Through the above technical solution, the anti-blocking head can be quickly threadedly connected to the inside of the threaded connection groove, and it is convenient for quick disassembly and replacement at a later time.

[0012] The utility model is further configured as follows: a sealing gasket is tightly arranged inside the threaded connection groove, and the end surface of the threaded connection head presses the sealing gasket against the bottom of the threaded connection groove.

[0013] Through the above technical solution, the sealing between the anti-blocking head and the mounting piece is reinforced by the sealing gasket to prevent external liquid from entering the interior during use.

[0014] The utility model is further configured as follows: the top of the anti-blocking head is chamfered and a plurality of anti-blocking holes are arranged on the inclined surface formed by the chamfer.

[0015] Through the above technical solution, the end face of the anti-clogging head is chamfered so that multiple anti-clogging holes are set on the inclined surface, which can prevent the end face of the anti-clogging head from being blocked by mud and sand after contacting the bottom of the liquid area, thereby ensuring accurate detection of the liquid level without the influence of mud and sand.

[0016] The utility model is further configured as follows: a plurality of anti-blocking holes are equidistantly distributed on the inclined surface of the anti-blocking head.

[0017] Through the above technical solution, it is convenient for the liquid that needs to be detected outside to enter the inside through a plurality of equidistantly arranged anti-blocking holes.

[0018] The beneficial effects of the utility model are as follows:

[0019] The utility model proposes a glue-filled waterproof liquid level sensor, in which epoxy resin glue is poured into the liquid level sensor so that the liquid level sensor wraps the main board installed inside, thereby achieving a waterproof effect during use, preventing the liquid entering the liquid level sensor when it is damaged from damaging the main board inside, thereby reducing the economic loss caused by the damage of the liquid level sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural diagram of a glue-filled waterproof liquid level sensor of the utility model;

[0021] Figure 2 This is the first exploded view of a glue-filled waterproof liquid level sensor of the utility model;

[0022] Figure 3 This is the second explosion diagram of a glue-filled waterproof liquid level sensor of the utility model.

[0023] In the figure: 100, housing; 200, mounting part; 201, sealing groove; 202, sealing ring; 203, threaded connection groove; 204, sealing gasket; 300, epoxy resin glue; 301, core body; 302, connecting wire; 400, anti-blocking head; 401, threaded connection head; 402, anti-blocking hole. DETAILED DESCRIPTION

[0024] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0025] like Figure 1-Figure 3As shown, a glue-filled waterproof liquid level sensor includes a housing 100, an inner wall end surface of the housing 100 is threadedly connected with a mounting piece 200, the housing 100 and the mounting piece 200 are sealed by a sealing piece 202, two sealing grooves 201 are provided on the outer wall of the mounting piece 200 near the bottom, the inner walls of the two sealing grooves 201 are sleeved with sealing rings 202, the outer walls of the two sealing rings 202 are elastically pressed against the inner wall of the housing 100, the end surface of the mounting piece 200 extending to the inside of the housing 100 is tightly pressed against the end surface of the epoxy resin glue 300, so that the two sealing rings 202 can be used to seal the connection between the mounting piece 200 and the housing 100 to prevent the measured liquid from entering the interior of the housing 100, and the mounting piece 200 seals the housing 100. 00 is tightly fixed with the epoxy resin glue 300 filled inside, which can improve the stability and sealing of the epoxy resin glue 300 inside. A threaded connection groove 203 is provided at the top of the inner wall of the mounting piece 200, and the threaded connection groove 203 is threadedly connected with the threaded connection head 401 extending from the bottom of the anti-blocking head 400, so that the anti-blocking head 400 can be quickly threadedly connected to the inside of the threaded connection groove 203, and it is convenient for rapid disassembly and replacement later. A sealing gasket 204 is tightly fitted inside the threaded connection groove 203, and the end face of the threaded connection head 401 presses the sealing gasket 204 against the bottom of the threaded connection groove 203, so that the sealing between the anti-blocking head 400 and the mounting piece 200 is reinforced by the sealing gasket 204 to prevent external liquid from entering the inside during use.

[0026] The inner wall of the housing 100 is filled with epoxy resin glue 300, and a control module is wrapped inside the epoxy resin glue 300, and the core 301 is electrically connected to the control module. The control module wrapped inside the epoxy resin glue 300 is electrically connected to a connecting wire 302, and the connecting wire 302 passes through the bottom of the housing 100, and the contact position with the connecting wire is sealed, so that it is convenient to use the connecting wire 302 to connect with an external power supply device, and the seal at the connection can prevent external liquid from entering the interior of the housing 100, and the core 301 is arranged inside the mounting member 200;

[0027] The end face of the mounting member 200 is threadedly connected to an anti-blocking head 400, the top of the anti-blocking head 400 is chamfered and a plurality of anti-blocking holes 402 are arranged on the inclined surface formed by the chamfer. The end face of the anti-blocking head 400 is chamfered so that the plurality of anti-blocking holes 402 are arranged on the inclined surface, which can prevent the end face of the anti-blocking head 400 from being blocked by mud and sand after contacting the bottom of the liquid area, thereby ensuring accurate detection of the liquid level without the influence of mud and sand. The plurality of anti-blocking holes 402 are equidistantly distributed on the inclined surface of the anti-blocking head 400, so that the liquid that needs to be detected outside can enter the inside through the plurality of equidistantly arranged anti-blocking holes 402.

[0028] When the utility model is in use, firstly, the connecting wire 302 is inserted into the shell 100 and electrically connected to the control module. Meanwhile, the core 301 is electrically connected to the control module, and the control module is placed inside the shell 100. Then, the shell 100 is filled with epoxy resin glue 300 in a fluid state. After curing, the control module can be completely wrapped to achieve a waterproof effect. Then, the mounting piece 200 is threadedly connected to the end face of the shell 100, and the two sealing rings 202 are elastically squeezed against the inner wall of the shell 100. Finally, the anti-blocking head 400 is threadedly connected to the port of the mounting piece 200, and the liquid to be measured enters through the multiple anti-blocking holes 402 on the chamfered surface of the end face, thereby achieving the effect of preventing clogging by mud and sand.

[0029] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A glue-filled waterproof liquid level sensor, comprising a housing (100), characterized in that: The inner wall end surface of the housing (100) is threadedly connected to a mounting piece (200); the housing (100) and the mounting piece (200) are sealed at the side by a sealing ring (202); the interior of the housing (100) is filled with epoxy resin glue (300); a control module is wrapped inside the epoxy resin glue (300) and is electrically connected to a core (301) via the control module; the core (301) is arranged inside the mounting piece (200); and an anti-blocking head (400) is threadedly connected to the end surface of the mounting piece (200).

2. The glue-filled waterproof liquid level sensor according to claim 1, characterized in that: The outer wall of the mounting member (200) is provided with two sealing grooves (201) near the bottom, the inner walls of the two sealing grooves (201) are sleeved with sealing rings (202), the outer walls of the two sealing rings (202) are elastically pressed against the inner wall of the outer shell (100), and the end surface of the mounting member (200) extending to the inside of the outer shell (100) is pressed against the end surface of the epoxy resin glue (300).

3. The glue-filled waterproof liquid level sensor according to claim 1, characterized in that: The control module wrapped inside the epoxy resin glue (300) is electrically connected to a connecting wire (302), and the connecting wire (302) passes through the bottom of the housing (100) and is sealed at the contact position therewith.

4. The glue-filled waterproof liquid level sensor according to claim 1, characterized in that: A threaded connection groove (203) is provided at the top of the inner wall of the mounting piece (200), and is threadedly connected to a threaded connection head (401) extending from the bottom of the anti-blocking head (400) through the threaded connection groove (203).

5. The glue-filled waterproof liquid level sensor according to claim 4, characterized in that: A sealing gasket (204) is tightly fitted inside the threaded connection groove (203), and the end surface of the threaded connection head (401) presses the sealing gasket (204) against the bottom of the threaded connection groove (203).

6. The glue-filled waterproof liquid level sensor according to claim 1, characterized in that: The top of the anti-blocking head (400) is chamfered and a plurality of anti-blocking holes (402) are arranged on the inclined surface formed by the chamfer.

7. The glue-filled waterproof liquid level sensor according to claim 6, characterized in that: The plurality of anti-blocking holes (402) are equidistantly distributed on the inclined surface of the anti-blocking head (400) in a circular pattern.

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