CN209041553U - A gas, liquid and electric mixed rotary sealing device - Google Patents

Abstract

The utility model relates to a kind of gas, liquid, the mixed rotary sealing appts of electricity, including shell, the rotary shaft being rotatably arranged in shell, the first fluid passage is equipped in rotary shaft, first gas passage and the first signal transmission passage, second liquid channel is correspondingly provided on shell, second gas channel and second signal transmission channel, first signal transmission passage is equipped with signal transfer means, second signal transmission channel is equipped with chromacoder, shell includes main casing and end cap, main casing is equipped with the first support base along axial one end, main casing is equipped with the second support base along the axial other end, first bearing is equipped between first support base and rotary shaft, second bearing is equipped between second support base and rotary shaft, end cap is close to equipped with accommodating groove, chromacoder is fixed in accommodating groove, signal transmitting apparatus is mounted on rotary shaft Second end on.The utility model balance is more preferable, is able to ascend revolving speed, service life and the medium transmission efficiency of device.

Description

A gas, liquid and electric mixed rotary sealing device

technical field

The utility model relates to a mixed rotary sealing device for gas, liquid and electricity.

Background technique

At present, the main application fields of mixed rotary joints on the market are: experimental or production monitoring equipment, wind energy generators, robots, automatic rotating equipment, revolving doors, construction machinery, environmental protection equipment, turntables, military equipment, etc. Most of the transported media are air, water, hydraulic oil and hot oil, etc. A small number of conductive slip rings are added on the basis of gas and liquid media to realize the transmission of electrical signals or data signals, and most of the conductive slip rings are used. The outer part of the rotary joint is locked on the rotary joint with bolts. The maximum operating temperature of the normal conductive slip ring cannot exceed 80 °C, and the corresponding rotation speed cannot exceed 150 rpm. Most of the rotary joints are in the form of shaft surface elastomer seals, and rubber sealing rings are used. When the rotary joints in this form are designed as multiple medium channels, a high friction temperature will be generated during normal use. If the medium If the internal pressure is too high or the rotation speed of the rotary joint is too fast, it will directly increase the surface temperature of the rotary joint, which will easily affect the use of the electric slip ring and shorten the service life of the rotary joint. In addition, if the rotary joint leaks , the leakage of the liquid medium will damage the electric slip ring, resulting in a short circuit of the circuit, which is easy to cause safety accidents.

In view of this, the present inventor has conducted in-depth research on the above-mentioned problems, resulting in this case.

Utility model content

The purpose of the utility model is to provide a gas, liquid and electric mixed rotary sealing device with good stability, long service life and high operation efficiency.

In order to achieve the above purpose, the utility model adopts such technical scheme:

A gas, liquid and electric mixed rotary sealing device, comprising a casing, a rotating shaft rotatably arranged in the casing, one end of the rotating shaft is a mounting end extending into the casing, the other end is a connecting end extending out of the casing, and the rotating shaft There is a first liquid channel, a first gas channel and a first signal transmission channel, the outer shell is correspondingly provided with a second liquid channel communicating with the first liquid channel, and the outer shell is correspondingly provided with a second liquid channel communicating with the first gas channel. The gas channel is provided with a second signal transmission channel corresponding to the first signal transmission channel on the outer casing, the first signal transmission channel is provided with a signal transmission device, the second signal transmission channel is provided with a signal conversion device corresponding to the signal transmission device, and the outer casing includes A main casing and an end cover connected to the main casing, one end of the main casing in the axial direction is provided with a first support seat, the other end of the main casing in the axial direction is provided with a second support seat, A first bearing is arranged between a support base and the rotating shaft, a second bearing is arranged between the second support base and the rotating shaft, and one end of the end cover close to the rotating shaft is provided with a second signal The transmission channel communicates with the receiving groove, the signal conversion device is fixed in the receiving groove, and the signal transmission device is correspondingly installed on the rotating shaft.

As a preferred mode of the present invention, the signal transmission device includes a first lead wire and a current converter, and the signal conversion device includes a current sensing device for receiving the signal of the current converter and a first wire connected to the current sensing device. With two leads, the current converter is mounted on the rotating shaft through a synchronizing block, and the current sensing device is fixed on the end cover by screws.

As a preferred mode of the present invention, a first sealing ring, a second sealing ring and a third sealing ring are arranged between the housing and the rotating shaft, and the first gas passage and the second gas passage are The docking position is set between the first sealing ring and the second sealing ring, the butting position of the first liquid channel and the second liquid channel is set between the second sealing ring and the third sealing ring, the first sealing ring, Both the second sealing ring and the third sealing ring are located between the first bearing and the second bearing.

After adopting the technical scheme of the utility model, the front and rear double supports are realized through the first bearing and the second bearing, the balance of the entire rotary sealing device is better, the rotation speed of the device can be increased, and the signal transmission device and the signal conversion device are arranged in the casing. , the signal transmission is realized by the rotation of the rotating shaft, and the service life of the rotating device and the medium transmission efficiency are improved.

Description of drawings

Fig. 1 is the structural representation of the utility model (the arrow in the figure represents the flow direction of the medium);

Fig. 2 is the enlarged view of A place in Fig. 1;

10-Housing 11-First Bearing

12-Second bearing 13-First support seat

14-Second support seat 15-Second gas channel

16-Second liquid channel 17-Second signal transmission channel

20-rotating shaft 21-first gas passage

22-Second gas channel 23-Second signal transmission channel

24-Synchro block 30-End cap

31-Storage slot 32-Screw

41-first lead 42-current converter

51-Second lead 52-Current sensing device

61-First sealing ring 62-Second sealing ring

63-Third sealing ring 70-Heat radiating groove

Detailed ways

In order to further explain the technical solutions of the present invention, the following detailed description is given in conjunction with the accompanying drawings.

1 and 2, a gas, liquid, electric mixed rotary sealing device, including a casing 10, a rotating shaft 20 rotatably arranged in the casing 10, in use, the rotating shaft 20 is connected with production equipment. One end of the rotating shaft 20 is the installation end extending into the casing 10, and the other end is the connecting end extending out of the casing. The rotating shaft 20 is provided with a first liquid channel 22, a first gas channel 21 and a first signal transmission channel 23. 10 is correspondingly provided with a second liquid channel 16 communicating with the first liquid channel 22, a second gas channel 15 communicating with the first gas channel 21 is correspondingly provided on the housing 10, and the housing 10 is correspondingly provided with a first signal transmission The channel 23 corresponds to the second signal transmission channel 17, the first signal transmission channel 23 is provided with a signal transmission device, and the second signal transmission channel 17 is provided with a signal conversion device corresponding to the signal transmission device.

In the present invention, the casing 10 includes a main casing and an end cover 30 connected to the main casing. The main casing is cylindrical, and the end cover 30 is locked on one end of the main casing along the axial direction by a hexagon socket bolt, so One end of the main casing in the axial direction is provided with a first support seat 13 , the other end of the main casing in the axial direction is provided with a second support seat 14 , and a second support seat 14 is disposed between the first support seat 13 and the rotating shaft 20 . There is a first bearing 11 , a second bearing 12 is arranged between the second support base 14 and the rotating shaft 20 , and the first bearing 11 and the second bearing 12 are respectively arranged at both ends of the main casing to maximize the supporting distance . One end of the end cover 30 close to the rotating shaft 20 is provided with a receiving groove 31 communicating with the second signal transmission channel 17 , the signal conversion device is fixed in the receiving groove 31 , and the signal transmission device is correspondingly installed in the on the rotating shaft 20. The sealing device of the utility model operates more reliably, and the maximum rotational speed can reach 350 rpm.

As a preferred mode of the present invention, the signal transmission device includes a first lead 41 and a current converter 42, and the signal conversion device includes a current sensing device 52 for receiving the signal of the current converter 42 and a current sensing device 52 connected to the current sensing device. For the second lead 51 on the device 52 , the current converter 42 is installed on the rotating shaft 20 through the synchronizing block 24 , and the current sensing device 52 is fixed on the end cover 30 through the screw 32 . The technology of realizing signal transmission by using the relative rotating current converter 42 and the current sensing device 52 is a conventional technology in the physical field. The magnetic field, the induction coil cuts the magnetic field line to generate electromotive force to realize the transmission of electrical signals. Of course, the current converter 42 and the current sensing device 52 can also be used to realize the transmission of data signals and other signals. In the present invention, the current converter 42 is designed with three parts: electrical signal conversion, data signal conversion and other monitoring signal conversion. The first lead 41 on the rotating shaft 20 is connected to the current converter 42, and the electrical signal, data After the signal or monitoring signal is transmitted to the corresponding conversion part of the current converter 42 , it will be induced by the corresponding inductive part of the current sensing device 52 , and then led out from the end cover 30 through the second lead 51 , and the current converter 42 and the current sensing device 52 are connected. The signals can be transformed and sensed with each other.

As a preferred mode of the present invention, a first sealing ring 61 , a second sealing ring 62 and a third sealing ring 63 are provided between the housing 10 and the rotating shaft 20 , and the first gas passage 21 is connected to the The docking position of the second gas channel 15 is set between the first sealing ring 61 and the second sealing ring 62 , and the docking position of the first liquid channel 22 and the second liquid channel 26 is set between the second sealing ring 62 and the second sealing ring 62 . Between the third sealing rings 63 , the first sealing ring 61 , the second sealing ring 62 and the third sealing ring 63 are all located between the first bearing 11 and the second bearing 12 . Among them, the first sealing ring 61 is one, the second sealing ring 62 and the third sealing ring 63 are two, and the first sealing ring 61, the second sealing ring 62 and the third sealing ring 63 are used as the main seal. With good sealing effect, further sealing can be performed between the rotating shaft 20 and the end cover 30 . The utility model also designs a leakage induction power-off protection device in the current sensing device 52, and the internal data protection lead can be independently drawn out and connected to the computer monitoring equipment, which can form real-time leakage detection and effectively prevent safety accidents caused by circuit short circuit caused by leakage. .

In the present invention, a plurality of heat dissipation grooves 70 are also arranged on the outer side wall of the casing 10, and the current converter 42 and the current sensing device 52 are made of high temperature resistant materials, which can effectively cool the circuit part and improve the circuit part under high temperature environment. Service life, the maximum operating temperature can reach 230 ℃. Use parameters: ①Fluid medium: water, hot water, air, hydraulic oil, high temperature oil, electrical signal and data signal, etc.; ②Used revolutions≤350 rpm; ③Used temperature≤230℃; ④Used pressure≤45Mpa .

The product form of the present invention is not limited to the illustrations and examples in this case, and anyone who makes appropriate changes or modifications of similar ideas should be regarded as not departing from the scope of the patent of the present invention.

Claims (3)

1. A gas, liquid and electric mixed rotary sealing device, comprising a casing, a rotating shaft rotatably arranged in the casing, one end of the rotating shaft is a mounting end extending into the casing, and the other end is a connecting end extending out of the casing, The rotating shaft is provided with a first liquid channel, a first gas channel and a first signal transmission channel, a second liquid channel communicated with the first liquid channel is correspondingly provided on the outer shell, and a second liquid channel communicated with the first gas channel is correspondingly provided on the outer shell. For the second gas channel, the casing is provided with a second signal transmission channel corresponding to the first signal transmission channel, the first signal transmission channel is provided with a signal transmission device, and the second signal transmission channel is provided with a signal conversion device corresponding to the signal transmission device, The outer casing includes a main casing and an end cover connected to the main casing, characterized in that: one end of the main casing along the axial direction is provided with a first support seat, and the other end of the main casing along the axial direction is provided with A second support seat, a first bearing is arranged between the first support seat and the rotating shaft, a second bearing is arranged between the second support seat and the rotating shaft, and the end cover is close to one end of the rotating shaft A receiving groove communicated with the second signal transmission channel is provided, the signal conversion device is fixed in the receiving groove, and the signal transmission device is correspondingly installed on the rotating shaft. 2. A gas-liquid-electric hybrid rotary sealing device according to claim 1, characterized in that: the signal transmission device comprises a first lead wire and a current converter, and the signal conversion device comprises a converter for receiving current A current sensing device for the signal of the sensor and a second lead connected to the current sensing device, the current converter is mounted on the rotating shaft through a synchronizing block, and the current sensing device is fixed on the end cover by screws. 3. The gas-liquid-electric hybrid rotary sealing device according to claim 1, wherein a first sealing ring, a second sealing ring and a third sealing ring are arranged between the casing and the rotating shaft The abutting position of the first gas channel and the second gas channel is set between the first sealing ring and the second sealing ring, and the abutting position of the first liquid channel and the second liquid channel is set at the second sealing ring. Between the sealing ring and the third sealing ring, the first sealing ring, the second sealing ring and the third sealing ring are all located between the first bearing and the second bearing.