Explosion-proof vibration transmitter

Abstract

The utility model relates to the technical field of vibration transmitters, in particular to an explosion-proof vibration transmitter, which comprises a lower shell, an upper shell, a detector and a PCB (printed circuit board) mainboard, the lower shell is fixedly connected to the bottom of the upper shell, the detector and the PCB mainboard are respectively positioned inside the lower shell and the upper shell, an interface is arranged at the top of the upper shell, and the detector is connected with the PCB mainboard. A connecting groove is formed in the upper end face of the upper shell, a connecting column matched with the connecting groove is fixedly connected to the bottom end of the connector, a pouring sealing material is arranged between the connecting cable and the inner wall of the groove, the pouring sealing material is epoxy resin and plays a good sealing role, the connecting cable is an anti-noise shielding cable, electromagnetic interference of an industrial site is effectively reduced, and the service life of the connecting cable is prolonged. The connecting cable is directly connected into the transmitter, compared with a traditional connecting cable, the head of the connecting cable has no anti-electromagnetic interference protection, the anti-interference effect is better, water flow can be effectively resisted through sealing of the encapsulating material, the waterproof effect is good, the interior of the transmitter cannot be affected, and the environmental adaptability is good.

Description

Technical Field

[0001] The utility model relates to the technical field of vibration transmitters, in particular to an explosion-proof vibration transmitter. Background Art

[0002] A vibration transmitter is a device used to measure the vibration of mechanical equipment. It is mainly installed on the bearing cover of various rotating mechanical devices. Vibration transmitters are divided into split and integrated types. They are mainly used to detect the absolute vibration of rotating machinery, such as casing vibration, bearing vibration, mechanical vibration, etc. It can integrate traditional vibration sensors and precision measurement circuits to achieve a high-precision vibration measurement system. This device can be directly connected to PLC, DCS and other systems, and outputs standard signals, such as 4mA to 20mA standard current signals, which are proportional to the magnitude of the vibration value. Integrated vibration transmitters usually adopt a design that integrates the sensor and the instrument body. It is suitable for monitoring and protection of equipment such as centrifugal pumps, reciprocating compressors, centrifuges, cooling towers, industrial fans, electric motors and gas turbines;

[0003] Conventional vibration transmitters usually use connectors at their signal output ends, which may cause electromagnetic interference to the signal in harsh industrial environments and have poor environmental adaptability. Utility Model Content

[0004] The purpose of the utility model is to provide an explosion-proof vibration transmitter, which has the characteristics of effectively reducing electromagnetic interference in industrial sites, good sealing performance and good environmental adaptability.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an explosion-proof vibration transmitter, comprising a lower shell, an upper shell, a detector and a PCB main board, the lower shell being fixedly connected to the bottom of the upper shell, the detector and the PCB main board being located inside the lower shell and the upper shell, respectively, an interface being provided at the top of the upper shell, a connecting groove being provided on the upper end surface of the upper shell, a connecting column matching the connecting groove being fixedly connected to the bottom end of the interface, a groove being provided on the upper end surface of the interface, a connecting cable being provided inside the groove, the connecting cable passing through the groove and extending to the interior of the upper shell to be connected to the PCB main board, a casting material being provided between the connecting cable and the inner wall of the groove.

[0006] In order to improve the sealing performance, as a preferred explosion-proof vibration transmitter of the present invention, a sealing rubber plug is provided between the bottom of the connecting column and the bottom of the connecting groove.

[0007] For the convenience of connection, as a preferred explosion-proof vibration transmitter of the present invention, the connecting column and the connecting groove are threadedly connected.

[0008] In order to facilitate the rotation of the interface, as a preferred explosion-proof vibration transmitter of the present invention, the outer wall of the interface is fixedly connected with a nut.

[0009] In order to improve the sealing between the interface and the upper shell, as a preferred explosion-proof vibration transmitter of the present invention, a sealing ring is provided between the nut and the top end of the upper shell.

[0010] In order to improve the sealing and waterproof properties, as a preferred explosion-proof vibration transmitter of the present invention, the casting material is epoxy resin.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0012] When installing the interface, rotate the connecting column at the bottom to the connecting groove on the top of the upper shell. The connecting column and the connecting groove are threaded, which is easy to install and has high connection strength. The connecting cable passes through the connecting groove and extends through the interface to the outside of the transmitter. The signal cable is directly connected to the inside of the transmitter. A sealing material is provided between the connecting cable and the inner wall of the groove. The sealing material is epoxy resin, which has a good sealing effect. The connecting cable is an anti-noise shielded cable, which effectively reduces electromagnetic interference in the industrial site. The connecting cable is directly connected to the inside of the transmitter. Compared with the traditional patch cable head without anti-electromagnetic interference protection, the anti-interference effect is better. At the same time, the sealing of the sealing material can effectively resist water flow, has a good waterproof effect, will not affect the inside of the transmitter, and has good environmental adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a cross-sectional view of the overall internal structure of the utility model;

[0014] Figure 2 This is the overall external structure diagram of the utility model.

[0015] In the figure: 1. Lower shell; 2. Upper shell; 3. Detector; 4. PCB main board; 5. Interface; 6. Connection slot; 7. Connection column; 8. Groove; 9. Connection cable; 10. Casting material; 11. Sealing plug; 12. Nut; 13. Sealing ring. DETAILED DESCRIPTION

[0016] See also Figures 1 to 2A explosion-proof vibration transmitter includes a lower shell 1, an upper shell 2, a detector 3 and a PCB mainboard 4. The lower shell 1 is fixedly connected to the bottom of the upper shell 2. The detector 3 and the PCB mainboard 4 are respectively located inside the lower shell 1 and the upper shell 2. An interface 5 is provided on the top of the upper shell 2. A connecting groove 6 is provided on the upper end surface of the upper shell 2. A connecting column 7 matching the connecting groove 6 is fixedly connected to the bottom end of the interface 5. A groove 8 is provided on the upper end surface of the interface 5. A connecting cable 9 is provided inside the groove 8. The connecting cable 9 passes through the groove 8 and extends to the interior of the upper shell 2 to be connected to the PCB mainboard 4. A casting material 10 is provided between the connecting cable 9 and the inner wall of the groove 8.

[0017] In this embodiment: when installing the interface 5, the connecting column 7 at the bottom is rotated to the inside of the connecting groove 6 at the top of the upper shell 2. The connecting column 7 and the connecting groove 6 are threadedly connected, which is easy to install and has high connection strength. The connecting cable 9 passes through the connecting groove 6 and extends through the interface 5 to the outside of the transmitter, and the signal cable is directly connected to the inside of the transmitter. A sealing material 10 is provided between the connecting cable 9 and the inner wall of the groove 8. The sealing material 10 is epoxy resin, which plays a good sealing role. The connecting cable 9 is an anti-noise shielded cable, which effectively reduces electromagnetic interference in the industrial site. The connecting cable 9 is directly connected to the inside of the transmitter. Compared with the traditional patch cable head without anti-electromagnetic interference protection, the anti-interference effect is better. At the same time, the sealing of the sealing material 10 can effectively resist water flow, has a good waterproof effect, will not affect the inside of the transmitter, and has good environmental adaptability.

[0018] As a technical optimization solution of the present invention, a sealing rubber plug 11 is provided between the bottom of the connecting column 7 and the bottom of the connecting groove 6 .

[0019] In this embodiment, a sealing plug 11 is provided between the bottom of the connecting column 7 and the bottom of the connecting groove 6. After the interface 5 is installed, the connecting column 7 presses the sealing plug 11 downward, and the sealing plug 11 deforms and seals, with a good sealing effect.

[0020] As a technical optimization solution of the present invention, the connecting column 7 and the connecting groove 6 are threadedly connected.

[0021] In this embodiment, the connecting column 7 and the connecting groove 6 are threadedly connected, which is convenient for installation and has high connection strength.

[0022] As a technical optimization solution of the present invention, a nut 12 is fixedly connected to the outer wall of the interface 5 .

[0023] In this embodiment, a nut 12 is fixedly connected to the outer wall of the interface 5, so that the interface 5 can be rotated by an external wrench when the interface 5 is installed.

[0024] As a technical optimization solution of the present invention, a sealing ring 13 is provided between the nut 12 and the top end of the upper shell 2 .

[0025] In this embodiment, a sealing ring 13 is provided between the nut 12 and the top end of the upper shell 2 to improve the sealing between the interface 5 and the upper shell 2 .

[0026] As a technical optimization solution of the present invention, the casting material 10 is epoxy resin.

[0027] In this embodiment, the casting material 10 is epoxy resin, which has a good sealing effect.

[0028] Working principle: When installing the interface 5, rotate the connecting column 7 at the bottom to the inside of the connecting groove 6 at the top of the upper shell 2. The connecting column 7 and the connecting groove 6 are threadedly connected, which is easy to install and has high connection strength. The connecting cable 9 passes through the connecting groove 6 and extends through the interface 5 to the outside of the transmitter, and the signal cable is directly connected to the inside of the transmitter. A sealing material 10 is provided between the connecting cable 9 and the inner wall of the groove 8. The sealing material 10 is epoxy resin, which plays a good sealing role. The connecting cable 9 is an anti-noise shielded cable, which effectively reduces electromagnetic interference in the industrial site. The connecting cable 9 is directly connected to the inside of the transmitter. Compared with the traditional patch cable head without anti-electromagnetic interference protection, the anti-interference effect is better. At the same time, the sealing of the sealing material 10 can effectively resist water flow, has a good waterproof effect, will not affect the inside of the transmitter, and has good environmental adaptability.

[0029] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An explosion-proof vibration transmitter, comprising a lower shell (1), an upper shell (2), a detector (3) and a PCB mainboard (4), wherein the lower shell (1) is fixedly connected to the bottom of the upper shell (2), and the detector (3) and the PCB mainboard (4) are respectively located inside the lower shell (1) and the upper shell (2), characterized in that: The top of the upper shell (2) is provided with an interface (5), the upper end surface of the upper shell (2) is provided with a connection groove (6), the bottom end of the interface (5) is fixedly connected with a connection column (7) matching the connection groove (6), the upper end surface of the interface (5) is provided with a groove (8), the interior of the groove (8) is provided with a connection cable (9), the connection cable (9) passes through the groove (8) and extends to the interior of the upper shell (2) to be connected to the PCB mainboard (4), and a casting material (10) is provided between the connection cable (9) and the inner wall of the groove (8).

2. The explosion-proof vibration transmitter according to claim 1, characterized in that: A sealing rubber plug (11) is provided between the bottom of the connecting column (7) and the bottom of the connecting groove (6).

3. The explosion-proof vibration transmitter according to claim 1, characterized in that: The connecting column (7) and the connecting groove (6) are threadedly connected.

4. The explosion-proof vibration transmitter according to claim 1, characterized in that: The outer wall of the interface (5) is fixedly connected with a nut (12).

5. The explosion-proof vibration transmitter according to claim 4, characterized in that: A sealing ring (13) is provided between the nut (12) and the top end of the upper shell (2).

6. The explosion-proof vibration transmitter according to claim 1, characterized in that: The casting material (10) is epoxy resin.

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