CN206738156U - A kind of new No leakage roots blower sealing device - Google Patents

A kind of new No leakage roots blower sealing device Download PDF

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Publication number
CN206738156U
CN206738156U CN201621451497.XU CN201621451497U CN206738156U CN 206738156 U CN206738156 U CN 206738156U CN 201621451497 U CN201621451497 U CN 201621451497U CN 206738156 U CN206738156 U CN 206738156U
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China
Prior art keywords
ring
roots blower
stationary ring
sealing
rotating ring
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CN201621451497.XU
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Chinese (zh)
Inventor
毛文雨
毛旭伟
宗鑫涛
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Jiangsu Best Machinery Co Ltd
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Jiangsu Best Machinery Co Ltd
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Abstract

The utility model provides a kind of new No leakage roots blower sealing device, including support, 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 axisymmetric two pipe thread holes of No leakage roots blower on the outside of the support, 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 forms liquid film structure and realize sealing;The support and the gland are provided with helicla flute with the No leakage roots blower axle contact position, the section of the helicla flute is rectangle, unsuccessful direction, on the contrary, when axle rotates by pumping effect, reaches the effect of sealing with the rotation direction of No leakage roots blower axle.For the utility model 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

A kind of new No leakage roots blower sealing device
Technical field
The utility model belongs to roots blower field, specifically a kind of when roots blower is conveying hazardous gas, To avoid the sealing device of the No leakage roots blower of these hazardous gas spillages.
Background technology
General roots blower contributes to convey air, and the requirement to sealing is very low, and gas mainly passes through on end cap Skeleton structure is sealed or labyrinth structure is sealed, general on end cap to have even open to atmosphere hole, it is allowed to partial air from Released in hole.And the sealing of skeleton structure requires very high to the size of mounting hole, and the rubber of outside framework oil seal uses for a long time Easy aging, also need to consider the reaction of gas and rubber when conveying other gases.Therefore when conveying other special gas, Seal member typically uses mechanical seal, and mechanical seal in the market in end cap and bearing mainly by directly adding machinery Seal to completely cut off lubricating oil and gas, yet with the sealing surface of the direct impulse machine sealing of gas, long-play can cause The failure of sealing surface, and then cause hazardous gas spillage, cause further to lose.Therefore, 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 outside flush cycle system, Prevent lubricating oil and conveyed contacting with each other for gas, ensure that roots blower oil, the safety and reliability of hermetic seal.But It is that the needing of the program is compared big change to the structure of original double seals so that structure complexity increase, simultaneously The pressure of outside flushing liquor is higher than the pressure of conveying gas, adds the cost of auxiliary device, and due to flushing liquor directly with Gas contacts, and the selection to flushing liquor also has certain requirement so that whole device uses complex.
Utility model content
For the deficiencies in the prior art, the utility model provides a kind of new No leakage roots blower with close Seal apparatus, the device are transformed on the basis of double mechanical seal, disclosure satisfy that the conveying of No leakage roots blower is dangerous The requirement strictly sealed is needed during gas, it is easy to process, using simple, and the more common double mechanical seal of service life It is long.
In order to achieve the above object, the utility model uses following technical scheme.
A kind of new No leakage roots blower sealing device, the new No leakage roots blower sealing device For double seals, including support, 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 are mounted 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 is installed between left rotating ring and the left throw-out collar, right rotating ring is installed between the right rotating ring and the right throw-out collar Sealing ring;The left stationary ring directly contacts on the left of the left rotating ring and with the left rotating ring, and the right stationary ring is positioned at described Directly contacted on the right side of right rotating ring and with the right rotating ring;Left stationary ring sealing ring is installed in the support, installed in the gland There is the right stationary ring sealing ring;The left stationary ring is arranged in the left stationary ring sealing ring, and the right stationary ring is arranged on the right side In stationary ring sealing ring;The support, 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 with the outside of the support on No leakage roots blower axisymmetric two Individual 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 Screwed hole, into the cavity, on the one hand the left rotating ring and the right rotating ring can be cooled down and lubricated, 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 support with it is described No leakage roots blower axle 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 axle reaches the effect of sealing on the contrary, when axle rotates by pumping effect.
Preferably, the material of the support 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 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 material of the right throw-out collar are 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 Cross 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 axle contact position It is opposite with the rotation direction of the roots blower axle;Affiliated gland is fixed by bolt and the support, and is entered by sealing ring Row sealing.
Preferably, the material of the gland is 304 stainless steels.
The beneficial effects of the utility model:
A kind of new No leakage roots blower sealing device described in the utility model, by opening spiral on support Groove, 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 dangerous gas The leakage of body, reduce impact of the hazardous gas to mechanical seal sealing surface, the life-span of prolonged mechanical sealing;Helicla flute on gland The micro hazardous gas that the sealing that pump-absorb action is formed to leak out further is reduced, and almost reaches No leakage;This practicality New that simple modifications are carried out on the basis of original double seals, difficulty of processing is small, does not increase auxiliary device, can greatly Improve the sealing property and service life of original mechanical seal.
Brief description of the drawings
Fig. 1 is the utility model overall structure scheme of installation.
Description of reference numerals is as follows:
1- supports, 2- support 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.
Embodiment
Below in conjunction with the accompanying drawings and specific embodiment is further described to the utility model, but guarantor of the present utility model Shield scope is not limited to this.
As shown in figure 1, a kind of new No leakage roots blower sealing device, including support 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 support 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.Left stationary ring sealing ring 5 is housed, the left stationary ring 6 is matched somebody with somebody with the left stationary ring sealing ring 5 for interference on the support 1 Close;The support 1 is provided with support helicla flute 2, the section shape of the support helicla flute 2 with the contact position of No leakage roots blower axle 19 Shape is rectangle, and the hand of spiral is opposite with the rotation direction of the No leakage roots blower axle 19;The outside of the support 1 be provided with Symmetrical two pipe thread holes of No leakage roots blower axle 19, 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 outside cooling water;The pressure Right stationary ring sealing ring 16 is housed, the right stationary ring 15 is interference fit with the right stationary ring sealing ring 16 on lid 17;The gland 17 are provided with gland helicla flute 18 with the No leakage roots blower axle 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 axle 19;The gland 17 passes through spiral shell with the support 1 Bolt is fastenedly connected.The left rotating ring 7 is positioned at the left right side of stationary ring 6 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 Directly contact positioned at the right left side of stationary ring 15 and in it, the left side of the right rotating ring 14 is the right throw-out collar 12, described right dynamic 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 thrust by set screw 21 is radially being fixed.
The course of work:
The new No leakage roots blower is arranged on the axle 19 of No leakage roots blower with sealing device, by fixed Position screw 21 is fixed.When roots blower normal operation, the hazardous gas leaked out first passes through support helicla flute 2, warp The liquid film structure crossed the pumping effect of support helicla flute 2 and formed by upper pipe thread hole 3 into the cooling water in sealing cavity 20 Realize and seal for the first time;The a small amount of hazardous gas leaked out after first time seals is by left rotating ring 7 and the shape of left stationary ring 6 Into second of sealing, the third time that is formed of right rotating ring 14 and right stationary ring 15 sealed after almost do not remain;Finally Gas leaked out after foregoing sealing three times and its micro forms pumping effect by gland helicla flute 18 and carried out finally Sealing, finally realizes No leakage.
The embodiment is preferred embodiment of the present utility model, but the utility model is not limited to above-mentioned embodiment party Formula, in the case of without departing substantially from substantive content of the present utility model, those skilled in the art can make any apparent Improvement, replacement or modification belong to the scope of protection of the utility model.

Claims (7)

1. a kind of new No leakage roots blower sealing device, it is characterised in that including support (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 support (1) up and down and left side is respectively provided with pipe thread hole (3), lower pipe thread hole (4) and support helicla flute (2) and in the support (1) Left stationary ring sealing ring (5) is installed;Right stationary ring sealing ring (16) is installed in the gland (17);The gland (17) is provided with pressure Lid helicla flute (18) is attached with the support (1) by bolt;The left stationary ring (6) is arranged on the left stationary ring sealing ring (5) in;The right stationary ring (15) is arranged in the right stationary ring sealing ring (16);The spring (10) is arranged on spring base (11) On;The left rotating ring (7) and the right rotating ring (14) are located at the spring (10) both sides respectively, by the left throw-out collar (9) and The right throw-out collar (12) is connected with the spring (10) and by the spring (10) in axial compression, and passes through set screw (21) Radially fixed;Directly contact on the left of the left rotating ring (7) with the left stationary ring (6), right side by left seal ring of moving ring (8) and Left throw-out collar (9) connection;Directly contacted on the right side of the right rotating ring (14) with the right stationary ring (15), it is close to pass on left right rotating ring Seal (13) is connected with the right throw-out collar (12).
A kind of 2. new No leakage roots blower sealing device according to claim 1, it is characterised 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. new No leakage roots blower sealing device according to claim 1, it is characterised in that the machine The material of seat (1) is 304 stainless steels, its inner side and No leakage roots blower axle (19) junction processing organic block helicla flute (2), There are upper pipe thread hole (3) and lower pipe thread hole (4) in outside.
A kind of 4. new No leakage roots blower sealing device according to claim 1 or 2 or 3, it is characterised in that The upper pipe thread hole (3) and described lower pipe thread hole (4) are arranged symmetrically on No leakage roots blower axle (19), and with it is close Envelope cavity (20) is connected.
A kind of 5. new No leakage roots blower sealing device according to claim 1 or 3, it is characterised in that institute The rectangular cross-section of support helicla flute (2) is stated, the hand of spiral is opposite with the rotation direction of No leakage roots blower axle (19).
A kind of 6. new No leakage roots blower sealing device according to claim 1, it is characterised in that the pressure The material of lid is 304 stainless steels, and its inner side is machined with gland helicla flute (18) with No leakage roots blower axle (19) junction.
A kind of 7. new No leakage roots blower sealing device according to claim 5, it is characterised in that the pressure The rectangular cross-section of lid helicla flute (18), the hand of spiral are opposite with the rotation direction of No leakage roots blower axle (19).
CN201621451497.XU 2016-12-26 2016-12-26 A kind of new No leakage roots blower sealing device Active CN206738156U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621451497.XU CN206738156U (en) 2016-12-26 2016-12-26 A kind of new No leakage roots blower sealing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201621451497.XU CN206738156U (en) 2016-12-26 2016-12-26 A kind of new No leakage roots blower sealing device

Publications (1)

Publication Number Publication Date
CN206738156U true CN206738156U (en) 2017-12-12

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108240334A (en) * 2016-12-26 2018-07-03 江苏优纳特机械有限公司 A kind of novel No leakage roots blower sealing device
CN108730224A (en) * 2018-06-02 2018-11-02 芜湖市中天密封件有限公司 A kind of non-contact chemical industry pump seal
CN108730225A (en) * 2018-06-02 2018-11-02 芜湖市中天密封件有限公司 A kind of non-contact chemical industry pump seal of modified
CN108757483A (en) * 2018-06-02 2018-11-06 芜湖市中天密封件有限公司 A kind of efficiently non-contact chemical industry pump seal

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108240334A (en) * 2016-12-26 2018-07-03 江苏优纳特机械有限公司 A kind of novel No leakage roots blower sealing device
CN108730224A (en) * 2018-06-02 2018-11-02 芜湖市中天密封件有限公司 A kind of non-contact chemical industry pump seal
CN108730225A (en) * 2018-06-02 2018-11-02 芜湖市中天密封件有限公司 A kind of non-contact chemical industry pump seal of modified
CN108757483A (en) * 2018-06-02 2018-11-06 芜湖市中天密封件有限公司 A kind of efficiently non-contact chemical industry pump seal

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