CN108240334A - A kind of novel No leakage roots blower sealing device - Google Patents
A kind of novel No leakage roots blower sealing device Download PDFInfo
- Publication number
- CN108240334A CN108240334A CN201611231520.9A CN201611231520A CN108240334A CN 108240334 A CN108240334 A CN 108240334A CN 201611231520 A CN201611231520 A CN 201611231520A CN 108240334 A CN108240334 A CN 108240334A
- Authority
- CN
- China
- Prior art keywords
- ring
- roots blower
- stationary ring
- sealing
- leakage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
- F04C27/008—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids for other than working fluid, i.e. the sealing arrangements are not between working chambers of the machine
- F04C27/009—Shaft sealings specially adapted for pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/0007—Injection of a fluid in the working chamber for sealing, cooling and lubricating
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Mechanical Sealing (AREA)
Abstract
The present invention provides a kind of novel No leakage roots blower sealing device, including engine base, left stationary ring, left rotating ring, left throw-out collar, spring, right throw-out collar, right rotating ring, right stationary ring, gland；It is provided with about axisymmetric two pipe thread holes of No leakage roots blower on the outside of the engine base, after cooling water is by the pipe thread hole, on the one hand the left rotating ring and the right rotating ring can be cooled down, on the other hand can also form liquid film structure and realize sealing；The engine base and the gland are provided with helicla flute with the No leakage roots blower axis contact position, the section of the helicla flute is rectangle, unsuccessful direction, on the contrary, when shaft rotation is moved by pumping effect, achievees the effect that sealing with the rotation direction of No leakage roots blower axis.For the present invention by being improved on the basis of original double seals, difficulty of processing is small, does not increase auxiliary device, can greatly improve the performance and used life of original mechanical seal.
Description
Technical field
The invention belongs to roots blower field, specifically one kind in roots blower when conveying hazardous gas, to keep away
Exempt from the sealing device of the No leakage roots blower of these hazardous gas spillages.
Background technology
General roots blower contributes to conveying air, and the requirement to sealing is very low, and gas mainly passes through on end cap
Skeleton structure seals or labyrinth structure is sealed, general on end cap to have even open to atmosphere hole, allow partial air from
It is released in hole.And the sealing of skeleton structure is very high to the size requirement of mounting hole, and the rubber of outside framework oil seal uses for a long time
Easy aging also needs to consider reacting for gas and rubber when conveying other gases.Therefore when conveying other special gas,
Seal member is generally using mechanical seal, and mechanical seal currently on the market in end cap and bearing mainly by directly adding machinery
It seals to completely cut off lubricating oil and gas, however, as the sealing surface of the direct impulse machine sealing of gas, long-play can cause
The failure of sealing surface, so that hazardous gas spillage, causes further to lose.For this purpose, the limited public affairs of the excellent nanotesla machinery in Yixing
Department proposes a solution, roots blower double end-face mechanical sealing device【Application number：CN201110402963.0, open/
Notification number：CN103147989A】, the program is lubricated and cooled down to two seal faces using external flush cycle system,
Prevented lubricating oil and conveyed gas to contact with each other, ensure that roots blower oil, hermetic seal safety and reliability.But
It is that the needing of the program is compared the structure of original double seals big change so that structure complexity increases, simultaneously
The pressure of external flushing liquor is higher than the pressure of conveying gas, increases the cost of auxiliary device, and due to flushing liquor directly with
Gas contacts, and also has certain requirement to the selection of flushing liquor so that whole device uses complex.
Invention content
For the deficiencies in the prior art, the present invention provides a kind of novel No leakage roots blower sealings to fill
It puts, which is transformed on the basis of double mechanical seal, disclosure satisfy that No leakage roots blower conveys hazardous gas
When need the requirement strictly sealed, easy to process, using simple, and the more common double mechanical seal of service life is long.
In order to achieve the above object, the present invention uses following technical scheme.
A kind of novel No leakage roots blower sealing device, the novel No leakage roots blower sealing device
For double seals, including engine base, left stationary ring, left rotating ring, left throw-out collar, spring, right throw-out collar, right rotating ring, right stationary ring, pressure
Lid, the spring mount elastically, and left rotating ring and right rotating ring are compressed respectively by the left throw-out collar and right throw-out collar of both sides；It is described
Left seal ring of moving ring between left rotating ring and the left throw-out collar is installed, right rotating ring is installed between the right rotating ring and the right throw-out collar
Sealing ring；The left stationary ring is located on the left of the left rotating ring and is in direct contact with the left rotating ring, and the right stationary ring is located at described
It is in direct contact on the right side of right rotating ring and with the right rotating ring；Left stationary ring sealing ring in the engine base is installed, is installed in the gland
There is the right stationary ring sealing ring；The left stationary ring is mounted in the left stationary ring sealing ring, and the right stationary ring is mounted on the right side
In stationary ring sealing ring；The engine base, left stationary ring sealing ring, left stationary ring, left rotating ring, set screw, right rotating ring, right stationary ring, the right side are quiet
Ring sealing ring, gland constitute a sealing cavity.It is provided on the outside of the engine base about No leakage roots blower axisymmetric two
A pipe thread hole, respectively upper pipe thread hole and lower pipe thread hole, and be connected with the cavity, cooling water passes through the upper tube
Threaded hole into the cavity, on the one hand can be cooled down and lubricated to the left rotating ring and the right rotating ring, on the other hand
Also liquid film structure can be formed and realize sealing, cooling water discharges sealing device by the lower pipe thread hole；Affiliated engine base with it is described
No leakage roots blower axis contact position is provided with helicla flute, the rectangular cross-section of the helicla flute, rotation direction and No leakage roots blower
The rotation direction of axis achievees the effect that sealing on the contrary, when shaft rotation is moved by pumping effect.
Preferably, the material of the engine base is 304 stainless steels.
The left throw-out collar, the left seal ring of moving ring, the left rotating ring, the spring right side are followed successively by the left of the spring
It is followed successively by the right throw-out collar, the right throw-out collar sealing ring, the right rotating ring；The thrust of the spring passes through the left throw-out collar and institute
Right throw-out collar is stated to compress the left rotating ring and the right rotating ring in axial direction；The spring mounts elastically；The left rotating ring
It is compressed, carried out radially fixed by set screw with the right rotating ring.
Preferably, the material of the left rotating ring and the right rotating ring is SiC.
Preferably, the spring, the spring base and the left throw-out collar, the right throw-out collar material be 304 stainless steels.
Preferably, the material of the left seal ring of moving ring and the right seal ring of moving ring is the AFLAS of resistance to steam.
The left stationary ring is located at the right side of affiliated left rotating ring, and left stationary ring is pressed into the left stationary ring by appropriate power seals
In circle, the left stationary ring is interference fit with the left stationary ring sealing ring；The right stationary ring is located at the right side of the right rotating ring, leads to
It crosses appropriate power the right stationary ring is pressed into the right stationary ring sealing ring, the right stationary ring was with the right stationary ring sealing ring
It is full of cooperation.
Preferably, the material of the left stationary ring and the right stationary ring is SiC.
The gland is provided with helicla flute, the rectangular cross-section of helicla flute, the hand of spiral with the roots blower axis contact position
It is opposite with the rotation direction of the roots blower axis；Affiliated gland is fixed by bolt and the engine base, and pass through sealing ring into
Row sealing.
Preferably, the material of the gland is 304 stainless steels.
Beneficial effects of the present invention：
A kind of novel No leakage roots blower sealing device of the present invention, by opening helicla flute on engine base,
The liquid film structure formed using the pump-absorb action and cooling water of helicla flute realized and sealed for the first time, significantly less hazardous gas
Leakage reduces impact of the hazardous gas to mechanical seal sealing surface, the service life of prolonged mechanical sealing；The pumping of helicla flute on gland
The sealing that effect is formed causes the micro hazardous gas leaked out to be further reduced, and almost reaches No leakage；The present invention is in original
Have and carry out simple modifications on the basis of double seals, difficulty of processing is small, does not increase auxiliary device, can greatly improve original
The sealing performance and service life of mechanical seal.
Description of the drawings
Fig. 1 is overall structure scheme of installation of the present invention.
The reference numerals are as follows：
1- engine bases, 2- engine base helicla flutes, the upper pipe thread holes of 3-, pipe thread hole under 4-, the left stationary ring sealing rings of 5-, a 6- left sides are quiet
Ring, the left rotating rings of 7-, the left seal ring of moving ring of 8-, the left throw-out collars of 9-, 10- springs, 11- spring bases, the right throw-out collars of 12-, the right ring seals of 13-
Circle, the right rotating rings of 14-, the right stationary rings of 15-, the right stationary ring sealing rings of 16-, 17- glands, 18- gland helicla flutes, 19- No leakage Roots's wind
Arbor, 20- sealing cavities, 21- set screws.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment the present invention is further illustrated, but protection scope of the present invention is simultaneously
It is without being limited thereto.
As shown in Figure 1, a kind of novel No leakage roots blower sealing device, including engine base 1, left stationary ring 6, left rotating ring
7th, left throw-out collar 9, spring 10, right throw-out collar 12, right rotating ring 14, right stationary ring 15, gland 17；The engine base 1, left stationary ring sealing ring 5, a left side
Stationary ring 6, left rotating ring 7, set screw 21, right rotating ring 14, right stationary ring 15, right stationary ring sealing ring 16, gland 17 constitute one it is close
Seal cavity 20.Match on the engine base 1 equipped with left stationary ring sealing ring 5, the left stationary ring 6 with the left stationary ring sealing ring 5 for interference
It closes；The engine base 1 is provided with engine base helicla flute 2, the section shape of the engine base helicla flute 2 with 19 contact position of No leakage roots blower axis
Shape is rectangle, and the hand of spiral is opposite with the rotation direction of the No leakage roots blower axis 19；1 outside of the engine base be provided with about
19 symmetrical two pipe thread holes of No leakage roots blower axis, respectively upper pipe thread hole 3 and lower pipe thread hole 4；It is described
Upper pipe thread hole 3 and the lower pipe thread hole 5 are connected with the sealing cavity 20, pass through to external cooling water；The pressure
Equipped with right stationary ring sealing ring 16 on lid 17, the right stationary ring 15 is with the right stationary ring sealing ring 16 to be interference fitted；The gland
17 are provided with gland helicla flute 18 with the No leakage roots blower axis contact position, and the cross sectional shape of the gland helicla flute 18 is square
Shape, the hand of spiral are opposite with the rotation direction of the No leakage roots blower axis 19；The gland 17 passes through spiral shell with the engine base 1
Bolt is fastenedly connected.The left rotating ring 7 is located at 6 right side of left stationary ring and is in direct contact with it, the right side of the left rotating ring 7
For the left throw-out collar 9, the left rotating ring 7 is sealed with the left throw-out collar 9 by left seal ring of moving ring 8；The right rotating ring 14
It is in direct contact positioned at right 15 left side of stationary ring and in it, the left side of the right rotating ring 14 is the right throw-out collar 12, described right dynamic
It is sealed between ring 14 and the right throw-out collar 12 by right seal ring of moving ring 13.Among the left throw-out collar 9 and the right throw-out collar 12
For the spring 10, the left throw-out collar 9 is compressed by the thrust of the spring 10 and the right throw-out collar 12, the spring 10 are installed
On spring base 11.The left rotating ring 7 and the right rotating ring 14 are by the spring 10 through the left throw-out collar 9 and the right throw-out collar
12 thrusts transmitted are fixed axially, and the pressing force by set screw 21 is radially being fixed.
The course of work：
The novel No leakage roots blower is mounted on sealing device on the axis 19 of No leakage roots blower, by fixed
Position screw 21 is fixed.When roots blower normal operation, the hazardous gas leaked out first passes through engine base helicla flute 2, warp
The liquid film structure crossed the pumping effect of engine base helicla flute 2 and formed by the cooling water that upper pipe thread hole 3 enters in sealing cavity 20
It realizes and seals for the first time；The a small amount of hazardous gas leaked out after first time seals is by 6 shape of left rotating ring 7 and left stationary ring
Into second of sealing, the third time sealing that is formed of right rotating ring 14 and right stationary ring 15 be sealed after almost without residual；Finally
Gas leaked out after aforementioned sealing three times and its micro forms pumping effect by gland helicla flute 18 and carries out finally
Sealing, finally realizes No leakage.
The embodiment is the preferred embodiments of the present invention, but present invention is not limited to the embodiments described above, not
Away from the present invention substantive content in the case of, those skilled in the art can make it is any it is conspicuously improved, replace
Or modification all belongs to the scope of protection of the present invention.
Claims (7)
1. a kind of novel No leakage roots blower sealing device, which is characterized in that including engine base (1), left stationary ring (6), a left side
Rotating ring (7), left throw-out collar (9), spring (10), right throw-out collar (12), right rotating ring (14), right stationary ring (15), gland (17)；The engine base
(1) left stationary ring sealing ring (5) is installed in；Right stationary ring sealing ring (16) is installed in the gland (17)；The gland (17)
It is attached with the engine base (1) by bolt；The left stationary ring (6) is in the left stationary ring sealing ring (5)；The right side
Stationary ring (15) is in the right stationary ring sealing ring (16)；The spring (10) is on spring base (11)；It is described left dynamic
Ring (7) is located at the spring (10) both sides respectively with the right rotating ring (14), passes through the left throw-out collar (9) and the right throw-out collar
(12) it is connected and by the spring (10) in axial compression with the spring (10), and it is solid in radial direction to pass through set screw (21)
It is fixed；With directly being contacted with the left stationary ring (6) on the left of the left rotating ring (7), right side passes through left seal ring of moving ring (8) and the left side
Throw-out collar (9) connects；With directly being contacted with the right stationary ring (15) on the right side of the right rotating ring (14) of institute, right seal ring of moving ring is passed on left
(13) it is connect with the right throw-out collar (12).
A kind of 2. novel No leakage roots blower sealing device according to claim 1, which is characterized in that the machine
Seat (1), left stationary ring sealing ring (5), left stationary ring (6), left rotating ring (7), set screw (21), right rotating ring (14), right stationary ring (15),
Right stationary ring sealing ring (16), gland (17) constitute a sealing cavity (20).
A kind of 3. novel No leakage roots blower sealing device according to claim 1, which is characterized in that the machine
The material of seat (1) is 304 stainless steels, and inside processes organic block helicla flute (2) with No leakage roots blower axis (19) junction,
There are upper pipe thread hole (3) and lower pipe thread hole (4) in outside.
4. a kind of novel No leakage roots blower sealing device according to claims 1 or 2 or 3, which is characterized in that
The upper pipe thread hole (3) and the lower pipe thread hole (4) are arranged symmetrically about No leakage roots blower axis (19), and with it is close
Envelope cavity (20) is connected.
A kind of 5. novel No leakage roots blower sealing device according to claim 1 or 3, which is characterized in that institute
The rectangular cross-section of engine base helicla flute (2) is stated, the hand of spiral is opposite with the rotation direction of No leakage roots blower axis (19).
A kind of 6. novel No leakage roots blower sealing device according to claim 1, which is characterized in that the pressure
The material of lid is 304 stainless steels, and inside is machined with gland helicla flute (18) with No leakage roots blower axis (19) junction.
A kind of 7. novel No leakage roots blower sealing device according to claim 1 or 5, which is characterized in that institute
The rectangular cross-section of gland helicla flute (18) is stated, the hand of spiral is opposite with the rotation direction of No leakage roots blower axis (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611231520.9A CN108240334A (en) | 2016-12-26 | 2016-12-26 | A kind of novel No leakage roots blower sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611231520.9A CN108240334A (en) | 2016-12-26 | 2016-12-26 | A kind of novel No leakage roots blower sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108240334A true CN108240334A (en) | 2018-07-03 |
Family
ID=62701885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611231520.9A Pending CN108240334A (en) | 2016-12-26 | 2016-12-26 | A kind of novel No leakage roots blower sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108240334A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114704463A (en) * | 2022-05-10 | 2022-07-05 | 山东省章丘鼓风机股份有限公司 | Spiral impeller high-speed explosion-proof Roots blower |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2048523U (en) * | 1989-03-09 | 1989-11-29 | 梨树县齿轮泵厂 | Outside mounted permanent magnetic machine double seal device for gear pump |
| DE10197228T5 (en) * | 2001-10-23 | 2004-04-22 | Taiko Kikai Industries Co., Ltd. | Encapsulated mechanical booster |
| CN201133350Y (en) * | 2007-11-27 | 2008-10-15 | 无锡压缩机股份有限公司 | Dry screw compressor main unit rotor spindle sealing structure |
| CN205207183U (en) * | 2015-11-05 | 2016-05-04 | 山东三牛机械有限公司 | Roots blower collection dress formula mechanical seal |
| CN206738156U (en) * | 2016-12-26 | 2017-12-12 | 江苏优纳特机械有限公司 | A kind of new No leakage roots blower sealing device |
-
2016
- 2016-12-26 CN CN201611231520.9A patent/CN108240334A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2048523U (en) * | 1989-03-09 | 1989-11-29 | 梨树县齿轮泵厂 | Outside mounted permanent magnetic machine double seal device for gear pump |
| DE10197228T5 (en) * | 2001-10-23 | 2004-04-22 | Taiko Kikai Industries Co., Ltd. | Encapsulated mechanical booster |
| CN201133350Y (en) * | 2007-11-27 | 2008-10-15 | 无锡压缩机股份有限公司 | Dry screw compressor main unit rotor spindle sealing structure |
| CN205207183U (en) * | 2015-11-05 | 2016-05-04 | 山东三牛机械有限公司 | Roots blower collection dress formula mechanical seal |
| CN206738156U (en) * | 2016-12-26 | 2017-12-12 | 江苏优纳特机械有限公司 | A kind of new No leakage roots blower sealing device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114704463A (en) * | 2022-05-10 | 2022-07-05 | 山东省章丘鼓风机股份有限公司 | Spiral impeller high-speed explosion-proof Roots blower |
| CN114704463B (en) * | 2022-05-10 | 2024-10-25 | 山东省章丘鼓风机股份有限公司 | High-rotation-speed explosion-proof Roots blower with spiral impeller |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180703 |