CN220416227U - High-pressure water rotary sealing device with two-stage sealing - Google Patents
High-pressure water rotary sealing device with two-stage sealing Download PDFInfo
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- CN220416227U CN220416227U CN202321821312.XU CN202321821312U CN220416227U CN 220416227 U CN220416227 U CN 220416227U CN 202321821312 U CN202321821312 U CN 202321821312U CN 220416227 U CN220416227 U CN 220416227U
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- hollow shaft
- shell
- pressure water
- seal
- sealing
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- 238000007789 sealing Methods 0.000 title claims abstract description 89
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 82
- 230000005540 biological transmission Effects 0.000 claims abstract description 18
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 3
- 238000005507 spraying Methods 0.000 abstract 1
- 239000007921 spray Substances 0.000 description 5
- 239000000428 dust Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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- Sealing Devices (AREA)
Abstract
The utility model relates to the field of spraying dust-settling sealing devices of roller cutting test tables, in particular to a secondary sealing high-pressure water rotary sealing device which comprises a high-pressure water inlet pipe, a primary hollow shaft, a secondary hollow shaft and a high-pressure water outlet pipe which are coaxially arranged in sequence, wherein the water outlet end of the primary hollow shaft is in threaded connection with the water inlet end of the secondary hollow shaft, a primary sealing shell and a secondary sealing shell are respectively sleeved outside the primary hollow shaft and the secondary hollow shaft, a first bearing is arranged between the primary sealing shell and the primary hollow shaft, a second bearing is arranged between the secondary sealing shell and the secondary hollow shaft, and the primary sealing shell and the secondary sealing shell are fixedly connected through a first screw. The utility model adopts the secondary sealing structure, has better sealing performance, and meanwhile, the secondary sealing shell is provided with the water pressure sensor, so that whether water leakage exists in a cavity between two stages of sealing can be monitored, and the use safety is improved; the outlet of the rotary sealing device is connected with a high-pressure water pipe which is arranged in the hollow transmission shaft to prevent the transmission shaft of the working machine from rusting.
Description
Technical Field
The utility model relates to the field of spray dust-fall sealing devices of roller cutting test tables, in particular to a high-pressure water rotary sealing device with secondary sealing.
Background
At present, no matter a drum shearer or a rotary cutting test needs spray dust fall, the rotary inner spray dust fall mode can realize the functions of following the movement of a cutting pick and timely dust fall, so that the rotary inner spray dust fall mode is popular, the rotary sealing device is not separated, the rotary sealing device is often low in sealing pressure, easy to wear and difficult to monitor due to water leakage accidents, and meanwhile, the inner spray water channel is easy to be influenced by water quality to corrode and rust.
Disclosure of Invention
The utility model aims to solve the problems and provides a two-stage sealed high-pressure water rotary sealing device, which adopts the following technical scheme:
the utility model provides a high-pressure water rotary seal device of second grade seal, includes the coaxial high-pressure water inlet pipe, one-level hollow shaft, second grade hollow shaft and the high-pressure outlet pipe that sets gradually, the water outlet of one-level hollow shaft holds threaded connection with the water inlet of second grade hollow shaft, and one-level hollow shaft and second grade hollow shaft cover respectively establish one-level seal shell and second grade seal shell outward, set up first bearing between one-level seal shell and the one-level hollow shaft, set up the second bearing between two-level seal shell and the second grade hollow shaft, pass through first screw fixed connection between one-level seal shell and the second grade seal shell.
Preferably, the high-pressure water inlet pipe and the high-pressure water outlet pipe are respectively arranged in the shell end cover and the transmission shaft of the working machine, a shell and a connecting flange are arranged between the shell end cover and the transmission shaft of the working machine, the shell end cover is perpendicular to the high-pressure water inlet pipe and is connected with the shell through bolts, the shell is fixedly connected with the connecting flange through second bolts, the connecting flange is fixedly connected with the end cover of the working machine through fourth bolts, and the connecting flange is fixedly connected with the secondary sealing shell through third bolts.
Preferably, a cavity is formed by enclosing the primary sealing shell, the secondary sealing shell and the primary hollow shaft, and a water pressure alarm is arranged on the secondary sealing shell and is used for detecting the water pressure in the cavity.
Preferably, the water outlet end of the high-pressure water inlet pipe is in threaded connection with the primary sealing shell, and the inner circular surface and the outer circular surface of the water outlet end of the secondary hollow shaft are in threaded connection with the water inlet end of the high-pressure water outlet pipe and the transmission shaft of the working machine respectively.
Preferably, a first axial sealing ring is arranged between the high-pressure water inlet pipe and the primary sealing shell, a static sealing ring is arranged between the primary hollow shaft and the secondary hollow shaft, a second axial sealing ring is arranged between the secondary hollow shaft and the high-pressure water outlet pipe, and a first sealing ring is arranged at the contact surface of the primary sealing shell and the secondary sealing shell.
Preferably, the secondary hollow shaft is in clearance fit with the secondary sealing shell, and 2 radially installed rotary sealing rings are arranged between the secondary hollow shaft and the secondary sealing shell.
Preferably, a lip-shaped sealing ring is arranged between the primary hollow shaft and the primary sealing shell.
Preferably, the number of the first bearings and the second bearings is 2, and the first bearings and the second bearings are respectively arranged in parallel.
Preferably, the screw threads at the joints of the primary hollow shaft and the secondary hollow shaft and the transmission shaft of the working machine are the same in screwing direction.
Preferably, the shell is made of acrylic material.
The beneficial effects of the utility model are as follows: the secondary sealing structure is adopted, so that the sealing performance is better, and meanwhile, the water pressure sensor is arranged on the secondary sealing shell, so that whether water leakage exists in a cavity between two stages of sealing can be monitored, and the use safety is improved; the outlet of the rotary sealing device is connected with a high-pressure water pipe which is arranged in the hollow transmission shaft to prevent the transmission shaft of the working machine from rusting; the rotary sealing structure is simple and reliable, the abrasion of the movable sealing ring is reduced, the service life is prolonged,
drawings
Fig. 1: the utility model is a schematic structural diagram.
Detailed Description
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:
in the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present utility model, it should be understood that the terms "center," "length," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
As shown in fig. 1, a secondary sealed high-pressure water rotary sealing device comprises a high-pressure water inlet pipe 41, a primary hollow shaft 12, a secondary hollow shaft 22 and a high-pressure water outlet pipe 63 which are coaxially arranged in sequence, wherein the water outlet end of the primary hollow shaft 12 is in threaded connection with the water inlet end of the secondary hollow shaft 22, a primary sealing shell 11 and a secondary sealing shell 21 are respectively sleeved outside the primary hollow shaft 12 and the secondary hollow shaft 22, a first bearing 14 is arranged between the primary sealing shell 11 and the primary hollow shaft 12, a second bearing 25 is arranged between the secondary sealing shell 21 and the secondary hollow shaft 22, and the number of the first bearings 14 and the second bearings 25 is 2 respectively and respectively arranged in parallel to ensure the coaxiality of transmission parts and improve the service life. The high-pressure water inlet pipe 41 and the high-pressure water outlet pipe 63 are respectively arranged in the shell end cover 51 and the working machine transmission shaft 62, the shell 52 and the connecting flange 53 are arranged between the shell end cover 51 and the working machine transmission shaft 62, the shell end cover 51 is perpendicular to the high-pressure water inlet pipe 41 and is connected with the shell 52 through bolts, the shell 52 is fixedly connected with the connecting flange 53 through the second screw 54, the connecting flange 53 is fixedly connected with the working machine end cover 61 through the fourth screw 65, the connecting flange 53 is fixedly connected with the secondary sealing shell 21 through the third screw 55, the primary sealing shell 11 is fixedly connected with the secondary sealing shell 21 through the first screw 33, and the mounting structure is simplified through the fixed connection of the screws. A first axial sealing ring 42 is arranged between the high-pressure water inlet pipe 41 and the primary sealing shell 11, a static sealing ring 23 is arranged between the primary hollow shaft 12 and the secondary hollow shaft 22, a second axial sealing ring 64 is arranged between the secondary hollow shaft 22 and the high-pressure water outlet pipe 63, and a first sealing ring 32 is arranged at the contact surface of the primary sealing shell 11 and the secondary sealing shell 21. The secondary hollow shaft 22 is in clearance fit with the secondary sealing shell 21, 2 radial rotary sealing rings 24 are arranged between the secondary hollow shaft 22 and the secondary sealing shell 21, and a lip-shaped sealing ring 13 is arranged between the primary hollow shaft 12 and the primary sealing shell 11.
The primary sealing shell 11, the secondary sealing shell 21 and the primary hollow shaft 12 are enclosed to form a cavity, the secondary sealing shell 21 is provided with a water pressure alarm 31, and the water pressure alarm 31 is used for detecting water pressure in the cavity and monitoring whether water leakage occurs at the joint between the primary sealing structure and the secondary sealing structure. When the water pressure in the cavity reaches the preset pressure, such as 0.1MPa, the water leakage accident is proved to occur, the pressure alarm starts to alarm, and meanwhile, the electromagnetic valve at the water inlet is closed, the high-pressure water source is cut off, and the use safety is improved.
The water outlet end of the high-pressure water inlet pipe 41 is in threaded connection with the primary sealing shell 11, and the inner circular surface and the outer circular surface of the water outlet end of the secondary hollow shaft 22 are respectively in threaded connection with the water inlet end of the high-pressure water outlet pipe 63 and the working machine transmission shaft 62, so that the working machine transmission shaft 62 is prevented from rusting. Preferably, the screw threads at the connection parts of the primary hollow shaft 12 and the secondary hollow shaft 22 and the connection parts of the secondary hollow shaft 22 and the transmission shaft 62 of the working machine are in the same rotation direction, so that the screw threads are more and more tightly connected in the working process, and no water leakage accident caused by screw loosening can occur.
The outer shell 52 is made of acrylic material, and is used for protecting the internal structure, and meanwhile, the internal structure is convenient to observe.
The present utility model has been described above by way of example, but the present utility model is not limited to the above-described embodiments, and any modifications or variations based on the present utility model fall within the scope of the present utility model.
Claims (10)
1. The utility model provides a high-pressure water rotary seal device of second grade seal, a serial communication port, including coaxial high-pressure intake pipe (41) that set gradually, one-level hollow shaft (12), second grade hollow shaft (22) and high-pressure outlet pipe (63), the play water end of one-level hollow shaft (12) and the water inlet end threaded connection of second grade hollow shaft (22), one-level seal shell (11) and second grade seal shell (21) are established to the cover respectively outside one-level hollow shaft (12) and second grade hollow shaft (22), set up first bearing (14) between one-level seal shell (11) and one-level hollow shaft (12), set up second bearing (25) between second grade seal shell (21) and second grade hollow shaft (22), through first screw (33) fixed connection between one-level seal shell (11) and second grade seal shell (21).
2. The high-pressure water rotary sealing device for secondary sealing according to claim 1, wherein the high-pressure water inlet pipe (41) and the high-pressure water outlet pipe (63) are respectively arranged in the shell end cover (51) and the working machine transmission shaft (62), the shell (52) and the connecting flange (53) are arranged between the shell end cover (51) and the working machine transmission shaft (62), the shell end cover (51) is perpendicular to the high-pressure water inlet pipe (41) and is connected with the shell (52) through bolts, the shell (52) is fixedly connected with the connecting flange (53) through second bolts (54), the connecting flange (53) is fixedly connected with the working machine end cover (61) through fourth bolts (65), and the connecting flange (53) is fixedly connected with the secondary sealing shell (21) through third bolts (55).
3. The high-pressure water rotary sealing device for the secondary seal according to claim 1, wherein a cavity is formed by enclosing the primary seal shell (11), the secondary seal shell (21) and the primary hollow shaft (12), a water pressure alarm (31) is arranged on the secondary seal shell (21), and the water pressure alarm (31) is used for detecting the water pressure in the cavity.
4. The high-pressure water rotary sealing device for the secondary seal according to claim 1, wherein the water outlet end of the high-pressure water inlet pipe (41) is in threaded connection with the primary seal shell (11), and the inner circular surface and the outer circular surface of the water outlet end of the secondary hollow shaft (22) are in threaded connection with the water inlet end of the high-pressure water outlet pipe (63) and the transmission shaft (62) of the working machine respectively.
5. The high-pressure water rotary sealing device for the secondary seal according to claim 1, wherein a first axial sealing ring (42) is arranged between a high-pressure water inlet pipe (41) and a primary sealing shell (11), a static sealing ring (23) is arranged between a primary hollow shaft (12) and a secondary hollow shaft (22), a second axial sealing ring (64) is arranged between the secondary hollow shaft (22) and a high-pressure water outlet pipe (63), and a first sealing ring (32) is arranged at the contact surface of the primary sealing shell (11) and the secondary sealing shell (21).
6. A secondary sealed high pressure water rotary seal device according to claim 1, characterized in that the secondary hollow shaft (22) is in clearance fit with the secondary seal housing (21), and 2 radially mounted rotary seal rings (24) are arranged between the secondary hollow shaft (22) and the secondary seal housing (21).
7. A two-stage sealed high pressure water rotary seal arrangement according to claim 1, characterized in that a lip seal (13) is provided between the primary hollow shaft (12) and the primary seal housing (11).
8. A two-stage sealed high pressure water rotary seal device according to claim 1, wherein the number of the first bearings (14) and the second bearings (25) is 2, respectively, and are arranged in parallel.
9. The high-pressure water rotary sealing device for the secondary seal according to claim 4, wherein the threads at the connection parts of the primary hollow shaft (12) and the secondary hollow shaft (22) and the connection parts of the secondary hollow shaft (22) and the transmission shaft (62) of the working machine are in the same rotation direction.
10. The two-stage sealed high pressure water rotary seal device according to claim 2, wherein the housing (52) is acrylic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321821312.XU CN220416227U (en) | 2023-07-12 | 2023-07-12 | High-pressure water rotary sealing device with two-stage sealing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321821312.XU CN220416227U (en) | 2023-07-12 | 2023-07-12 | High-pressure water rotary sealing device with two-stage sealing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220416227U true CN220416227U (en) | 2024-01-30 |
Family
ID=89658134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321821312.XU Active CN220416227U (en) | 2023-07-12 | 2023-07-12 | High-pressure water rotary sealing device with two-stage sealing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220416227U (en) |
-
2023
- 2023-07-12 CN CN202321821312.XU patent/CN220416227U/en active Active
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