CN107990004B - Shaft end sealing adjusting device - Google Patents
Shaft end sealing adjusting device Download PDFInfo
- Publication number
- CN107990004B CN107990004B CN201711324756.1A CN201711324756A CN107990004B CN 107990004 B CN107990004 B CN 107990004B CN 201711324756 A CN201711324756 A CN 201711324756A CN 107990004 B CN107990004 B CN 107990004B
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- baffle
- worm
- baffle plate
- handed
- air passage
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/40—Sealings between relatively-moving surfaces by means of fluid
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear Transmission (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses a shaft end sealing adjusting device which comprises a bearing seat, wherein a first air passage is formed in the bearing seat, sliding grooves are formed in the inner walls of two ends of the first air passage, a bidirectional screw rod is vertically arranged in each sliding groove, the upper end and the lower end of each bidirectional screw rod are rotatably connected to the inner walls of the sliding grooves, a first baffle plate and a second baffle plate which are of porous structures are sequentially connected to the bidirectional screw rods in a threaded mode from top to bottom, holes of the first baffle plate and the second baffle plate are arranged in a staggered mode, the first baffle plate and the second baffle plate are limited in the sliding grooves through limiting rods, a worm wheel is sleeved at the lower end of each bidirectional screw rod, a worm is meshed with the worm, the worm is limited on the inner wall of the first air passage, a first motor is installed on the bearing seat, and the output shaft of the first motor is connected with the. The invention has the advantages of stable structure, convenient operation, scientific and reasonable design, low manufacturing cost, convenient adjustment and air passage closing, capability of saving a large amount of time and energy of workers and worthy popularization.
Description
Technical Field
The invention relates to the technical field of shaft end sealing structures, in particular to a shaft end sealing adjusting device.
Background
The existing shaft end sealing technologies, such as gas sealing, sealing ring sealing and the like, have various sealing modes. The gas seal structure is more outstanding in the structure adopting gas seal, namely the gas seal structure for short. However, the existing gas sealing technology is still imperfect, the required gas flow is more than 80L/min, the performance is low, the sealing performance has the defects of poor sealing and the like, so that the resource waste is caused, the sealing cost, the design cost and the like are increased, and the adjustment cannot be carried out due to the lack of an adjusting device.
Disclosure of Invention
The invention aims to solve the problem that shaft end seal is inconvenient to adjust in the prior art, and provides a shaft end seal adjusting device.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a shaft end seals adjusting device, includes the bearing frame, first air flue has been seted up on the bearing frame, the spout has all been seted up, every to the both ends inner wall of first air flue equal vertical two-way screw rod that is equipped with in the spout, the upper and lower both ends of two-way screw rod are all rotated and are connected on the inner wall of spout, from last to having adopted porous structure's first baffle and second baffle to threaded connection in proper order down on the two-way screw rod, and the crisscross setting of hole of first baffle and second baffle, and first baffle and second baffle are all spacing in the spout through the gag lever post, the lower pot head of two-way screw rod is equipped with the worm wheel, the worm wheel meshing has the worm, and the worm is spacing on the inner wall of first air flue, install first motor on the bearing frame, the output shaft of first motor passes through.
Preferably, the worm is limited on the inner wall of the first air channel through a micro deep groove ball bearing.
Preferably, the bidirectional screw is composed of a left-handed thread part and a right-handed thread part, and the left-handed thread part and the right-handed thread part are welded by a connecting block.
Preferably, the two ends of the first baffle are respectively provided with a left-handed nut, and the first baffle is in threaded connection with the left-handed thread part of the bidirectional screw through the left-handed nut.
Preferably, right-handed nuts are installed at two ends of the second baffle, and the second baffle is in threaded connection with the right-handed thread part of the bidirectional screw through the right-handed nuts.
According to the invention, gas enters through the first gas passage, the first motor is started, the first motor drives the worm to rotate through the synchronous belt transmission mechanism after rotating, the worm drives the worm wheel meshed with the worm to rotate after rotating, the worm wheel drives the bidirectional screw to rotate after rotating, and the threads at the two ends of the bidirectional screw are reversely arranged, so that the first baffle and the second baffle can be driven to move close to or away from each other. The invention has the advantages of stable structure, convenient operation, scientific and reasonable design, low manufacturing cost, convenient adjustment and air passage closing, capability of saving a large amount of time and energy of workers and worthy popularization.
Drawings
Fig. 1 is a schematic structural diagram of a shaft end seal adjusting device according to the present invention;
FIG. 2 is a schematic structural view of the high performance cavity type shaft end air seal structure of the present invention;
FIG. 3 is an enlarged view of portion A of FIG. 2 according to the present invention;
FIG. 4 is an enlarged view of the portion B in FIG. 2 according to the present invention.
In the figure: the device comprises a shaft body 1, a bearing seat 2, a second air passage 3, an annular air seal cavity 4, a bearing 5, an adjusting device 6, a first air passage 7, a worm 8, a miniature deep groove ball bearing 9, a synchronous belt transmission mechanism 10, a first motor 11, a bidirectional screw 12, a limiting rod 13, a first baffle 14, a second baffle 15, a worm wheel 16, a second motor 17, a fourth gear 18, a third gear 19, a first gear 20, a third motor 21, a threaded sleeve 22, a second gear 23, a driving shaft 24, a miniature needle bearing 25, a lead screw 26, a piston 27 and a pressurizing groove 28.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise specifically stated or limited, the terms "cover", "fitted", "attached", "fixed", "distributed", and the like are to be understood in a broad sense, and may be, for example, fixedly attached, detachably attached, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Example 1: referring to fig. 1, a shaft end seal adjusting device comprises a bearing seat 2, a first air passage 7 is arranged on the bearing seat 2, sliding grooves are arranged on the inner walls of two ends of the first air passage 7, a bidirectional screw 12 is vertically arranged in each sliding groove, the upper end and the lower end of the bidirectional screw 12 are rotatably connected to the inner walls of the sliding grooves, a first baffle 14 and a second baffle 15 which adopt porous structures are sequentially connected to the bidirectional screw 12 from top to bottom in a threaded manner, holes of the first baffle 14 and the second baffle 15 are arranged in a staggered manner, the first baffle 14 and the second baffle 15 are limited in the sliding grooves through a limiting rod 13, a worm wheel 16 is sleeved at the lower end of the bidirectional screw 12, the worm wheel 16 is meshed with a worm 8, the worm 8 is limited on the inner wall of the first air passage 7, a first motor 11 is arranged on the bearing seat 2, an output shaft of the first motor 11 is connected with the worm, this structure simple to operate, design benefit, worm 8 is spacing on the inner wall of first air duct 7 through miniature deep groove ball bearing 9, miniature deep groove ball bearing installation is simple, two-way screw 12 comprises left-handed screw part and right-handed screw part, and left-handed screw part and right-handed screw part form through the connecting block welding, left-handed nut is all installed at the both ends of first baffle 14, and first baffle 14 is through the left-handed screw part threaded connection of left-handed nut with two-way screw 12, right-handed nut is all installed at the both ends of second baffle 15, and second baffle 15 is through the right-handed screw part threaded connection of right-handed nut with two-way screw 12, two-way screw 12 can drive first baffle 14 and second baffle 15 and be close to each other or keep away from the motion.
Example 2: referring to fig. 2-4, the high-performance cavity type shaft end air seal structure applied to the invention comprises a shaft body 1 and a bearing 5, wherein the bearing 5 is respectively installed at two ends of the shaft body 1, the inner ring of the bearing 5 is in interference fit with a shaft core, a bearing seat 2 is installed at the outer end of the bearing 5, two first air passages 7 are symmetrically arranged on the bearing seat 2, the lower ends of the first air passages 7 are communicated with second air passages 3, an adjusting device 6 is installed on each first air passage 7, an annular dustproof cover is sealed and covered at the end parts of the bearing 5 and the bearing seat 2, an annular air seal cavity 4 is arranged between the outer wall of the shaft body 1 and the bearing seat 2, and a pressurizing device is installed on the second air passages.
The adjusting device 6 comprises a first baffle 14, a second baffle 15, a bidirectional screw 12 and a first motor 11, wherein the inner walls of two ends of the first air duct 7 are respectively provided with a sliding groove, the two-way screw 12 is vertically arranged in each sliding groove, the upper end and the lower end of the bidirectional screw 12 are respectively rotatably connected to the inner walls of the sliding grooves, the two-way screw 12 is sequentially in threaded connection with the first baffle 14 and the second baffle 15 which adopt porous structures from top to bottom, holes of the first baffle 14 and the second baffle 15 are arranged in a staggered manner, the first baffle 14 and the second baffle 15 are both limited in the sliding grooves through a limiting rod 13, the lower end of the bidirectional screw 12 is sleeved with a worm wheel 16, the worm wheel 16 is meshed with a worm 8, the worm 8 is limited on the inner wall of the first air duct 7, the first motor 11 is arranged on the bearing seat 2, an output shaft of the first motor 11 is connected with the worm 8 through a synchronous belt transmission mechanism, the design is ingenious, the worm 8 is limited on the inner wall of the first air passage 7 through the micro deep groove ball bearing 9, the micro deep groove ball bearing is simple to install, the two-way screw 12 is composed of a left-handed thread part and a right-handed thread part, the left-handed thread part and the right-handed thread part are welded through a connecting block, left-handed nuts are installed at two ends of the first baffle plate 14, the first baffle plate 14 is in threaded connection with the left-handed thread part of the two-way screw 12 through the left-handed nuts, right-handed nuts are installed at two ends of the second baffle plate 15, the second baffle plate 15 is in threaded connection with the right-handed thread part of the two-way screw 12 through the right-handed nuts, the two-way screw 12 can drive the first baffle plate 14 and the second baffle plate 15 to move close to or away from each other, the pressurizing device is composed of a piston 27, a screw rod 26 and a driving device, a pressurizing, the middle part of the piston 27 is rotatably connected with a screw rod 26, the pressurizing device is convenient for adjusting pressure, the driving device is composed of a second motor 17 and a third motor 21, driving shafts 24 are installed at the driving ends of the second motor 17 and the third motor 21, a first gear 20 is sleeved on the driving shaft 24 of the second motor 17, a second gear 23 is sleeved on the driving shaft of the third motor 21, a threaded sleeve 22 is connected onto the screw rod 26 in a threaded mode, the threaded sleeve 22 is fixed onto the bearing seat 2 through a micro needle bearing 25, a third gear 19 is sleeved on the threaded sleeve 22 at a position corresponding to the first gear 20, a fourth gear 18 is sleeved on the threaded sleeve 22 at a position corresponding to the second gear 23, the diameter of the second gear 23 is 1.4 times that of the first gear 20, and fine adjustment of pressure is facilitated due to the arrangement of the two motors.
The electrical components presented in the document are all electrically connected with an external master controller and 220V mains, and the master controller can be a conventional known device controlled by a computer or the like.
When the air conditioner is used, air enters through the first air duct 7, the first motor 11 is started, the first motor 11 drives the worm 8 to rotate through the synchronous belt transmission mechanism 10 after running, the worm 8 drives the worm wheel 16 meshed with the worm to rotate after rotating, the worm wheel 16 drives the bidirectional screw 12 to rotate after rotating, the threads at the two ends of the bidirectional screw 12 are reversely arranged, so that the first baffle 14 and the second baffle 15 can be driven to move close to or away from each other, the air flow can be reduced as the holes of the first baffle 14 and the second baffle 15 are distributed in a staggered mode and gradually close to each other, and the air can be completely blocked when the first baffle 14 and the second baffle 15 are closely attached to each other, so that the purpose of adjustment is.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (5)
1. A shaft end sealing adjusting device comprises a bearing seat (2), wherein a first air passage (7) is formed in the bearing seat (2), sliding grooves are formed in inner walls of two ends of the first air passage (7), each sliding groove is internally and vertically provided with a two-way screw (12), the upper end and the lower end of each two-way screw (12) are rotatably connected to the inner wall of the corresponding sliding groove, the two-way screw (12) is sequentially in threaded connection with a first baffle (14) and a second baffle (15) which adopt porous structures from top to bottom, holes of the first baffle (14) and the second baffle (15) are arranged in a staggered mode, the first baffle (14) and the second baffle (15) are limited in the sliding grooves through limiting rods (13), a worm wheel (16) is sleeved at the lower end of the two-way screw (12), the worm wheel (16) is meshed with a worm (8), and the worm (8) is limited on the inner wall of the first air passage (7), the bearing seat (2) is provided with a first motor (11), and an output shaft of the first motor (11) is connected with the worm (8) through a synchronous belt transmission mechanism (10).
2. The shaft end seal adjustment device according to claim 1, characterized in that the worm (8) is retained on the inner wall of the first air channel (7) by means of micro deep groove ball bearings (9).
3. The shaft end seal adjustment device according to claim 1, wherein the bidirectional screw (12) is composed of a left-handed thread portion and a right-handed thread portion, and the left-handed thread portion and the right-handed thread portion are welded by a joint block.
4. The shaft end seal adjusting device according to claim 1, wherein both ends of the first baffle plate (14) are provided with left-handed nuts, and the first baffle plate (14) is in threaded connection with the left-handed thread part of the bidirectional screw (12) through the left-handed nuts.
5. The shaft end seal adjusting device according to claim 1, wherein right-handed nuts are mounted at both ends of the second baffle plate (15), and the second baffle plate (15) is in threaded connection with the right-handed thread part of the bidirectional screw (12) through the right-handed nuts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711324756.1A CN107990004B (en) | 2017-12-13 | 2017-12-13 | Shaft end sealing adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711324756.1A CN107990004B (en) | 2017-12-13 | 2017-12-13 | Shaft end sealing adjusting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107990004A CN107990004A (en) | 2018-05-04 |
| CN107990004B true CN107990004B (en) | 2020-01-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711324756.1A Active CN107990004B (en) | 2017-12-13 | 2017-12-13 | Shaft end sealing adjusting device |
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| Country | Link |
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| CN (1) | CN107990004B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0297976A1 (en) * | 1987-07-02 | 1989-01-04 | Normetex | Sealed transmission device using metallic bellows, especially for single quarter turn valves |
| DD268750A1 (en) * | 1988-02-12 | 1989-06-07 | Magdeburger Armaturenwerke | METAL LABYRINTH SPINDLE SEAL FOR DAMPING DEVICES, ESPECIALLY FOR OWN-MEDIUM-CONTROLLED QUICK-RELEASE EQUIPMENT |
| JP2001146984A (en) * | 1999-11-22 | 2001-05-29 | Megatorr Corp | Broadband variable conductance valve |
| CN103939617A (en) * | 2014-04-30 | 2014-07-23 | 广州市昊志机电股份有限公司 | High-performance cavity type shaft end air sealing structure |
| CN107477202A (en) * | 2017-10-16 | 2017-12-15 | 吴忠仪表有限责任公司 | Axial-flow type rotating regulation valve |
-
2017
- 2017-12-13 CN CN201711324756.1A patent/CN107990004B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0297976A1 (en) * | 1987-07-02 | 1989-01-04 | Normetex | Sealed transmission device using metallic bellows, especially for single quarter turn valves |
| DD268750A1 (en) * | 1988-02-12 | 1989-06-07 | Magdeburger Armaturenwerke | METAL LABYRINTH SPINDLE SEAL FOR DAMPING DEVICES, ESPECIALLY FOR OWN-MEDIUM-CONTROLLED QUICK-RELEASE EQUIPMENT |
| JP2001146984A (en) * | 1999-11-22 | 2001-05-29 | Megatorr Corp | Broadband variable conductance valve |
| CN103939617A (en) * | 2014-04-30 | 2014-07-23 | 广州市昊志机电股份有限公司 | High-performance cavity type shaft end air sealing structure |
| CN107477202A (en) * | 2017-10-16 | 2017-12-15 | 吴忠仪表有限责任公司 | Axial-flow type rotating regulation valve |
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| Publication number | Publication date |
|---|---|
| CN107990004A (en) | 2018-05-04 |
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