CN103334950A - Inner moving ring balanced load type mechanical sealing mechanism - Google Patents
Inner moving ring balanced load type mechanical sealing mechanism Download PDFInfo
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- CN103334950A CN103334950A CN2013102929060A CN201310292906A CN103334950A CN 103334950 A CN103334950 A CN 103334950A CN 2013102929060 A CN2013102929060 A CN 2013102929060A CN 201310292906 A CN201310292906 A CN 201310292906A CN 103334950 A CN103334950 A CN 103334950A
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- rotating ring
- sealing mechanism
- balanced load
- mechanical sealing
- pump case
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Abstract
The invention discloses an inner moving ring balanced load type mechanical sealing mechanism which comprises a main shaft (12) penetrating through a pump shell (10). The inner moving ring balanced load type mechanical sealing mechanism is characterized in that a sealing transmission pressing cover (14), a first elastic element (16), an inner moving ring (18) and a static ring (20) are sequentially sleeved on the main shaft (12) inside the pump shell (10) from one end, with an impeller installed, of the main shaft (12). Under large pressure, the inner moving ring balanced load type mechanical sealing mechanism has the advantages of being good in sealing performance, meanwhile long in service life and convenient to maintain.
Description
Technical field
The present invention relates to a kind of mechanical sealing mechanism, relate in particular to a kind of interior rotating ring balanced load formula mechanical sealing mechanism.
Background technique
At present, because having few and life-span of leakage rate, mechanical seal advantage such as grows, so be topmost shaft sealing mode in the equipment such as centrifugal pump, centrifuge, reactor and compressor, end face seal is named in mechanical seal again, it mainly is to rely on the end face of the ring of a pair of relative movement small axial clearance that forms of fitting mutually to seal, for example: centrifugal pump is in running, and rotating ring and stationary ring form a pair of sealing pair, guarantees that medium can not revealed under certain pressure.
Usually mechanical seal can be divided into built-in and external by the difference of mounting type; the mechanical seal of existing centrifugal pump is external; as shown in Figure 1; the mechanical seal device of existing centrifugal pump; comprise pump case 6; the transmission shaft 7 that runs through pump case 6; be set with rotating ring 5 at transmission shaft 7, an end face of this rotating ring 5 contacts with pump case 6, and a side of other end is provided with spring 2; this structural design; though can play certain seal action, but spring 2 can be compressed when the axial pressure that produces in the pump case 6 is big, to such an extent as between rotating ring 5 and pump case 6 both ends of the surface bigger gap can appear; thereby can cause the generation of leakage situation; therefore, the Seal Design of this structure is when pressure is big; there are the relatively poor defective of sealing effect and problem; simultaneously, the Seal Design of this structure is when changing sealing; must remove pump case 6 and just can change step, therefore also have more loaded down with trivial details defective and the problem safeguarded.
Summary of the invention
Technical problem to be solved by this invention provides the interior rotating ring balanced load formula mechanical sealing mechanism that a kind of sealing effect is better, grow working life, maintenance is more convenient.
For solving the problems of the technologies described above, the invention provides a kind of interior rotating ring balanced load formula mechanical sealing mechanism, comprise the main shaft that runs through pump case, be positioned on the described main shaft of described pump case inside and be set with sealing transmission gland, first elastic element, rotating ring and stationary ring successively from the end that impeller is installed.
Also comprise the outer rotating ring that is set on the described main shaft, an end face of described outer rotating ring contacts with the end face of described stationary ring, and another end face of described outer rotating ring contacts with second elastic element.
Described first elastic element is the ripple spring.
Described second elastic element is the ripple spring.
Dismountable gland that is equipped with on the described pump case.
Described gland is installed on the described pump case by a plurality of bolts.
Compared with prior art, beneficial effect of the present invention is:
1. because interior rotating ring balanced load formula mechanical sealing mechanism of the present invention, on the main shaft of pump case inside, be set with sealing transmission gland successively from the end that impeller is installed, first elastic element, interior rotating ring and stationary ring, like this because close impeller one side of interior rotating ring, so when the pump internal pressure is excessive, bear pressure by interior rotating ring, reach balanced loaded effect, gap in so just can not making between rotating ring end face and the stationary ring end face becomes big, be in optimum contacting state between rotating ring end face and the stationary ring end face in can making on the contrary, thereby keep the better seal effect, therefore the present invention still has the better seal effect under big pressure.
2. because interior rotating ring balanced load formula mechanical sealing mechanism of the present invention, dismountable gland that is equipped with on pump case, in the time need keeping in repair the workpiece of pump case inside or change, only need open gland pulls down impeller and takes out workpiece and can keep in repair or change, need not to remove again pump case, therefore safeguard more convenient.
3. because interior rotating ring balanced load formula mechanical sealing mechanism of the present invention, rotating ring outside the opposite side of stationary ring also is equipped with, so just formed secondary seal, further improved sealing effect, and because interior rotating ring bears the pressure balance load, thereby can reduce the wearing and tearing between outer rotating ring and the stationary ring, prolonged the working life of outer rotating ring and stationary ring, so working life of the present invention be longer.
Description of drawings
Fig. 1 is the structural representation of existing machinery sealing mechanism;
Fig. 2 is structural representation of the present invention;
Among the figure: pump case 10, impeller 11, main shaft 12, sealing transmission gland 14, the first elastic elements 16, interior rotating ring 18, stationary ring 20, outer rotating ring 22, second elastic element 24, gland 26.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail
Referring to shown in Figure 2, a kind of interior rotating ring balanced load formula mechanical sealing mechanism of the present invention includes the main shaft 12 that runs through pump case 10, and an end of this main shaft 12 connects the motor transmission shaft the other end impeller 11 is installed; Be positioned on the main shaft 12 of pump case 10 inside and be set with sealing transmission gland 14 successively from the end that impeller 11 is installed, interior rotating ring 18 and stationary ring 20, between sealing transmission gland 14 and interior rotating ring 18, first elastic element 16 is installed, preferred first elastic element 16 is wavy spring, the end face of interior rotating ring 18 and stationary ring 20 contacts and forms a pair of sealing pair, and interior rotating ring 18 and stationary ring 20 all are built in the pump case 10, this kind structural design, because interior rotating ring 18 is installed on the side near impeller 11, when producing bigger axial pressure in the pump case 10, interior rotating ring 18 stress balance loads, rotating ring 18 only can produce displacement to a side of stationary ring 20 namely, gap in so just can not making between rotating ring 18 and the stationary ring 20 becomes big, therefore, this mechanism design can make sealing mechanism under big pressure, still has the better seal effect, in addition, for further strengthening sealing effect, rotating ring 22 outside on main shaft 12, also being set with, the end face that is somebody's turn to do outer rotating ring 22 contacts with the end face of stationary ring 20, another end face of outer rotating ring 22 contacts with second elastic element 24, preferred second elastic element 24 is wavy spring, be somebody's turn to do and form second pair of sealing pair between outer rotating ring 22 and the stationary ring 20, play the effect of secondary seal, so can effectively promote the sealing effect of whole sealing mechanism, make the present invention can be good at being applicable to food, pharmacy, the operating mode that fine chemistry industry etc. are higher to the centrifugal pump mechanical seal requirement, in addition, because interior rotating ring 18 works to bear the pressure balance load, so can reduce the wearing and tearing between outer rotating ring 22 and the stationary ring 20, thereby can prolong the working life of outer rotating ring 22 and stationary ring 20.
For making the present invention easy to maintenance, dismountable gland 26 that is equipped with on pump case 10, preferred gland 26 is installed on the pump case 10 by a plurality of bolts, in the time need keeping in repair or change the workpiece of pump case 10 inside, when particularly needing internal rotating ring 18 to keep in repair or change, only need open gland 26 pull down impeller take out in rotating ring 18 can keep in repair or change, need not to remove again pump case 10, therefore safeguard more convenient.
For improving the system sealing performance of mechanical sealing mechanism, between the extended surface of the extended surface that seals transmission gland 14 and interior rotating ring 18, be provided with the O RunddichtringO; Circumference at stationary ring 20 is set with at least two O RunddichtringOs; Be provided with 0 RunddichtringO between the extended surface of rotating ring 22 and main shaft 12 surfaces outside, also the O RunddichtringO can be installed between other workpiece according to those skilled in the art's common practise, but all include in the protection domain of putting down in writing in claims.
In sum, the present invention still has the better seal performance under big pressure, simultaneously, also has long, the more convenient advantage of maintenance in working life.
The above only is preferred embodiments of the present invention; protection scope of the present invention is not limited with above-mentioned mode of execution; as long as the equivalence that those of ordinary skills do according to disclosed content is modified or changed, all should include in the protection domain of putting down in writing in claims.
Claims (6)
1. rotating ring balanced load formula mechanical sealing mechanism in a kind, comprise the main shaft (12) that runs through pump case (10), it is characterized in that: be positioned at the inner described main shaft (12) of described pump case (10) and upward be set with sealing transmission gland (14), first elastic element (16), rotating ring (18) and stationary ring (20) successively from the end that impeller is installed.
2. rotating ring balanced load formula mechanical sealing mechanism in according to claim 1, it is characterized in that: also comprise the outer rotating ring (22) that is set on the described main shaft (12), an end face of described outer rotating ring (22) contacts with the end face of described stationary ring (20), and another end face of described outer rotating ring (22) contacts with second elastic element (24).
3. rotating ring balanced load formula mechanical sealing mechanism in according to claim 1, it is characterized in that: described first elastic element (16) is the ripple spring.
4. rotating ring balanced load formula mechanical sealing mechanism in according to claim 2, it is characterized in that: described second elastic element (24) is the ripple spring.
5. according to each described interior rotating ring balanced load formula mechanical sealing mechanism in the claim 1 to 4, it is characterized in that: described pump case (10) is gone up dismountable gland (26) that is equipped with.
6. rotating ring balanced load formula mechanical sealing mechanism in according to claim 5, it is characterized in that: described gland (26) is installed on the described pump case (10) by a plurality of bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102929060A CN103334950A (en) | 2013-07-12 | 2013-07-12 | Inner moving ring balanced load type mechanical sealing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102929060A CN103334950A (en) | 2013-07-12 | 2013-07-12 | Inner moving ring balanced load type mechanical sealing mechanism |
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| Publication Number | Publication Date |
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| CN103334950A true CN103334950A (en) | 2013-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013102929060A Pending CN103334950A (en) | 2013-07-12 | 2013-07-12 | Inner moving ring balanced load type mechanical sealing mechanism |
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| CN (1) | CN103334950A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105736394A (en) * | 2016-04-07 | 2016-07-06 | 镇江江大泵业科技有限公司 | Directly-connected horizontal type centrifugal pump |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0320060A2 (en) * | 1987-12-11 | 1989-06-14 | Philips Patentverwaltung GmbH | Pump device for low-viscosity liquids |
| JP4480836B2 (en) * | 2000-02-07 | 2010-06-16 | 株式会社鶴見製作所 | Shaft seal unit for electric pump |
| CN201650840U (en) * | 2010-04-22 | 2010-11-24 | 江苏双达工程技术研究中心有限公司 | Axially moving double-end face mechanical seal for pumps |
| CN202326378U (en) * | 2011-11-22 | 2012-07-11 | 瓮福（集团）有限责任公司 | Mechanical sealing device of phosphoric ore pulp pump shaft |
| CN202326375U (en) * | 2011-10-17 | 2012-07-11 | 江苏振翔车辆装备股份有限公司 | Double-face mechanical sealing structure |
| CN202468466U (en) * | 2012-02-15 | 2012-10-03 | 陈潜 | Titanium alloy slurry pump |
| CN203430841U (en) * | 2013-07-12 | 2014-02-12 | 昆山新莱洁净应用材料股份有限公司 | Inner movable ring balancing load type mechanical sealing mechanism |
-
2013
- 2013-07-12 CN CN2013102929060A patent/CN103334950A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0320060A2 (en) * | 1987-12-11 | 1989-06-14 | Philips Patentverwaltung GmbH | Pump device for low-viscosity liquids |
| JP4480836B2 (en) * | 2000-02-07 | 2010-06-16 | 株式会社鶴見製作所 | Shaft seal unit for electric pump |
| CN201650840U (en) * | 2010-04-22 | 2010-11-24 | 江苏双达工程技术研究中心有限公司 | Axially moving double-end face mechanical seal for pumps |
| CN202326375U (en) * | 2011-10-17 | 2012-07-11 | 江苏振翔车辆装备股份有限公司 | Double-face mechanical sealing structure |
| CN202326378U (en) * | 2011-11-22 | 2012-07-11 | 瓮福（集团）有限责任公司 | Mechanical sealing device of phosphoric ore pulp pump shaft |
| CN202468466U (en) * | 2012-02-15 | 2012-10-03 | 陈潜 | Titanium alloy slurry pump |
| CN203430841U (en) * | 2013-07-12 | 2014-02-12 | 昆山新莱洁净应用材料股份有限公司 | Inner movable ring balancing load type mechanical sealing mechanism |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105736394A (en) * | 2016-04-07 | 2016-07-06 | 镇江江大泵业科技有限公司 | Directly-connected horizontal type centrifugal pump |
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Application publication date: 20131002 |