CN215726228U - Input type liquid level transmitter - Google Patents
Input type liquid level transmitter Download PDFInfo
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- CN215726228U CN215726228U CN202120977669.1U CN202120977669U CN215726228U CN 215726228 U CN215726228 U CN 215726228U CN 202120977669 U CN202120977669 U CN 202120977669U CN 215726228 U CN215726228 U CN 215726228U
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Abstract
The utility model discloses a throw-in type liquid level transmitter, comprising: the contact device is a contact base; the transmission module comprises a circuit board, an air guide cable and a pressure-sensitive sensing device, wherein the air guide cable is provided with a connecting end and an output end, one end of the circuit board is connected with the pressure-sensitive sensing device, and the other end of the circuit board is connected with the connecting end of the air guide cable; the protection device comprises a shell and a sealing device, wherein the shell is provided with a placing groove and a mounting hole, the output end of the air guide cable penetrates through the mounting hole and is arranged outside the shell, the sealing device is used for sealing the joint of the air guide cable and the mounting hole, the pressure-sensitive sensing device is fixedly mounted at the opening of the placing groove, and the contact base is mounted on the shell.
Description
Technical Field
The utility model relates to the field of transmitters, in particular to a drop-in type liquid level transmitter.
Background
The input type liquid level transmitter is a pressure sensor for measuring liquid level, and is widely applied to water level measurement in a high-precision, low-cost and convenient installation mode.
The production method of the liquid level transmitter commonly used in the market at present comprises the steps of 1, placing a diffused silicon core inside a core clamp, 2, pressing the diffused silicon core by using a core pressing cap, 3, then connecting an upper circuit board, 4, connecting the core clamp with a transmitter shell, and 5, finally, leading out an air guide cable from the tail of the shell and sealing the air guide cable by using a tail sealing ring and a tail pressing cap. The step is an existing transmitter installation process, the steps are multiple, only one sealing ring is arranged between a sensor core and a core clamp, and between the core clamp and a transmitter shell in a sealing groove for sealing, so that the transmitter is prone to failure in the installation process, and the transmitter is prone to water inlet failure in use.
The utility model provides a drop-in level transmitter for this purpose.
SUMMERY OF THE UTILITY MODEL
The utility model provides a drop-in liquid level transmitter for solving the problems of the prior art, which comprises:
the contact device is a contact base;
the transmission module comprises a circuit board, an air guide cable and a pressure-sensitive sensing device, wherein the air guide cable is provided with a connecting end and an output end, one end of the circuit board is connected with the pressure-sensitive sensing device, and the other end of the circuit board is connected with the connecting end of the air guide cable;
the protection device comprises a shell and a sealing device, wherein the shell is provided with a placing groove and a mounting hole, the output end of the air guide cable penetrates through the mounting hole and is arranged outside the shell, the sealing device is used for sealing the joint of the air guide cable and the mounting hole, the pressure-sensitive sensing device is fixedly mounted at the opening of the placing groove, and the contact base is mounted on the shell.
On the basis of the above scheme and as a preferable scheme of the scheme: the sealing device comprises a sealing ring and a sealing pressing cap, a connecting portion of the mounting hole and the shell is provided with a sealing groove, the sealing ring is arranged in the sealing groove, the sealing pressing cap is sleeved on the outer surface of the air guide cable, and the sealing pressing cap is in threaded connection with the shell forming the sealing groove, so that the sealing ring can be in a compression state, and the sealing performance of the air guide cable and the shell is guaranteed.
On the basis of the above scheme and as a preferable scheme of the scheme: the contact base is provided with a water guide hole and a water sump, one end of the water guide hole is connected with the outside, and the other end of the water guide hole is connected with the water sump.
On the basis of the above scheme and as a preferable scheme of the scheme: the pressure sensitive sensing device has a diffused silicon core therein.
On the basis of the above scheme and as a preferable scheme of the scheme: and a waterproof sealing ring is arranged between the diffusion silicon core body and the pressure-sensitive sensing device.
Compared with the prior art, the utility model has the outstanding and beneficial technical effects that:
1. the diffusion silicon core body is fixed in the transmitter shell, is connected with the circuit board, and converts the pressure value into 4-20mA direct current according to the height of different liquids. The direct current is transmitted to the subsequent treatment equipment through the air guide cable.
2. The transmitter forms double sealing with a sealing device arranged between the air guide cable and the shell through a waterproof sealing ring of the diffused silicon core body, and normal work of the transmitter in water is guaranteed.
The utility model provides a drop-in type liquid level transmitter, wherein a pressure-sensitive sensing device and a shell are designed into a whole, so that the connection relation between a core clamp and a core is reduced, the sealing performance of the transmitter is favorably kept, the water inlet failure caused by the damage of a waterproof sealing ring due to the screwing of threads in the installation process of the traditional transmitter is avoided, and the service life of a product is prolonged.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic sectional view of the present invention.
In the figure: 11. a contact base; 111. a water guide hole; 112. a water sump; 21. a circuit board; 22. an air guide cable; 221. A connecting end; 222. an output end; 23. a pressure sensitive sensing device; 231. a waterproof sealing ring; 31. a housing; 311. A placement groove; 312. mounting holes; 313. a sealing groove; 321. a seal ring; 322. sealing the pressing cap;
Detailed Description
In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. All other embodiments obtained by a person skilled in the art without making any inventive step, based on the given embodiments, fall within the scope of protection of the present application.
In the description of the present application, it is to be understood that the terms "upper", "lower", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
In the description of the present application, 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 or implying any number of technical features indicated.
The technical solution of the present invention is further described below with reference to the following embodiment and the accompanying fig. 1.
A contact device which is a contact base 11;
the transmission module comprises a circuit board 21, an air guide cable 22 and a pressure-sensitive sensing device 23, wherein the air guide cable 22 is provided with a connecting end 221 and an output end 222, one end of the circuit board 21 is connected with the pressure-sensitive sensing device 23, and the other end of the circuit board is connected with the connecting end 221 of the air guide cable 22;
the protection device comprises a shell 31 and a sealing device, wherein the shell 31 is provided with a placing groove 311 and a mounting hole 312, the output end 222 of the air guide cable 22 is arranged outside the shell 31 through the mounting hole 312, the sealing device is used for sealing the joint of the air guide cable 22 and the mounting hole 312, the pressure-sensitive sensing device 23 is fixedly arranged at the opening of the placing groove 311, and the contact base 11 is arranged on the shell 31.
Specifically, the sealing device includes a sealing ring 321 and a sealing press cap 322, a sealing groove 313 is formed in a connecting portion of the mounting hole 312 and the casing 31, the sealing ring 321 is disposed in the sealing groove 313, the sealing press cap 322 is sleeved on the outer surface of the air guide cable 22, and the sealing press cap 322 is in threaded connection with the casing forming the sealing groove 313, so that the sealing ring 321 can be in a compression state, and the sealing performance of the contact between the air guide cable 22 and the casing 31 is ensured.
Further, the contact base 11 has a water guiding hole 111 and a water sump 112, and one end of the water guiding hole 111 is connected to the outside and the other end is connected to the water sump 112.
In detail, the pressure sensitive sensing device 23 has a diffused silicon core therein. The diffusion silicon core body is fixed in the transmitter shell, is connected with the circuit board, and converts the pressure value into 4-20mA direct current according to the height of different liquids. The direct current is transmitted to the subsequent treatment equipment through the air guide cable.
Preferably, a waterproof gasket 231 is provided between the diffused silicon core and the pressure sensitive sensing device 23.
The utility model has the advantages that:
the pressure-sensitive sensing device and the transmitter shell are designed integrally, the transmitter is placed in liquid, and the diffusion silicon core body and the waterproof sealing ring 231 keep tightness in the using process under the action of the liquid pressure. The utility model omits the compaction step of the traditional core pressing cap, reduces the installation step and greatly improves the production efficiency. The transmitter forms double sealing with a sealing device arranged between the air guide cable and the shell through a waterproof sealing ring of the diffused silicon core body, and normal work of the transmitter in water is guaranteed.
The foregoing detailed description of the preferred embodiments of the utility model has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (5)
1. A drop-in level transmitter, comprising:
a contact device which is a contact base (11);
the transmission module comprises a circuit board (21), an air guide cable (22) and a pressure-sensitive sensing device (23), wherein the air guide cable (22) is provided with a connecting end (221) and an output end (222), one end of the circuit board (21) is connected with the pressure-sensitive sensing device (23), and the other end of the circuit board is connected with the connecting end (221) of the air guide cable (22);
the protection device comprises a shell (31) and a sealing device, wherein the shell (31) is provided with a placing groove (311) and a mounting hole (312), an output end (222) of the air guide cable (22) penetrates through the mounting hole (312) to be placed outside the shell (31), the sealing device is used for sealing the connection position of the air guide cable (22) and the mounting hole (312), the pressure-sensitive sensing device (23) is fixedly installed at the opening of the placing groove (311), and the contact base (11) is installed on the shell (31).
2. The drop-in liquid level transmitter of claim 1, wherein the sealing device comprises a sealing ring (321) and a sealing pressing cap (322), a sealing groove (313) is formed in a connecting portion of the mounting hole (312) and the housing (31), the sealing ring (321) is arranged in the sealing groove (313), the sealing pressing cap (322) is sleeved on the outer surface of the air guide cable (22), and the sealing pressing cap (322) is in threaded connection with the housing forming the sealing groove (313), so that the sealing ring (321) can be in a compressed state, and the sealing performance of the contact between the air guide cable (22) and the housing (31) is ensured.
3. A drop-in level transmitter as claimed in claim 1, wherein the contact base (11) has a water guiding hole (111) and a water sump (112), the water guiding hole (111) is connected to the outside at one end and connected to the water sump (112) at the other end.
4. A drop-in level transmitter according to claim 1, wherein the pressure sensitive sensing means (23) has a diffused silicon core therein.
5. A drop-in level transmitter according to claim 4, wherein a waterproof sealing ring (231) is provided between the diffusing silicon core and the pressure sensitive sensing means (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120977669.1U CN215726228U (en) | 2021-05-10 | 2021-05-10 | Input type liquid level transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120977669.1U CN215726228U (en) | 2021-05-10 | 2021-05-10 | Input type liquid level transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215726228U true CN215726228U (en) | 2022-02-01 |
Family
ID=80031060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120977669.1U Active CN215726228U (en) | 2021-05-10 | 2021-05-10 | Input type liquid level transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215726228U (en) |
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2021
- 2021-05-10 CN CN202120977669.1U patent/CN215726228U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: An input type liquid level transmitter Effective date of registration: 20230823 Granted publication date: 20220201 Pledgee: Zhejiang Tailong Commercial Bank Co.,Ltd. Jiaxing Branch Pledgor: Zhejiang taishengke Instrument Co.,Ltd. Registration number: Y2023980053405 |