CN203413123U - Mechanical sealing device for pump - Google Patents
Mechanical sealing device for pump Download PDFInfo
- Publication number
- CN203413123U CN203413123U CN201320444429.0U CN201320444429U CN203413123U CN 203413123 U CN203413123 U CN 203413123U CN 201320444429 U CN201320444429 U CN 201320444429U CN 203413123 U CN203413123 U CN 203413123U
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- CN
- China
- Prior art keywords
- transmission device
- rotating ring
- ring
- sealing device
- elastic
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- Expired - Lifetime
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- Mechanical Sealing (AREA)
Abstract
The utility model discloses a mechanical sealing device for a pump. The mechanical sealing device for the pump comprises a static ring, a moving ring, an elastic device, a transmission device and an elastic sealing device; the transmission device is sleeved on a shaft; the elastic sealing device is arranged between the transmission device and the shaft; a fastening bolt and an elastic device are arranged in the direction vertical to the shaft along the circumference of the transmission device; the moving ring is sleeved on the outside cylindrical surface of the section, extending to the moving ring, of the transmission device and can move backward and forward along the cylindrical surface of the transmission device; the moving ring and the outside cylindrical surface are sealed by the elastic sealing device; the static ring is in frictional contact with the moving ring; an annular step is formed inside the static ring; the moving ring and the transmission device form an annular sealing groove inside the moving ring. The mechanical sealing device for the pump is simple in structure and convenient to install and maintain; the production and maintenance cost of pump products can be effectively reduced.
Description
Technical field
The utility model belongs to mechanical sealing technology field, is specifically related to a kind of mechanical sealing device used for pump.
Background technique
Mechanical seal device with its reveal less, the life-span is long, the advantage such as reliable turns round, the application being widely used in field, the especially conveying equipment for fluid substances such as centrifugal pump, centrifuge such as oil, chemical industry, metallurgy, coal, video, medical treatment, electric power, weaving, environmental protection is more general.
According to fluid pressure balance, mechanical seal can be divided into two kinds of balance type and unbalanced types.Wherein, the partly or entirely effect of balancing liquid pressure to end face of balanced mechanical seal, loading coefficient is between 0 to 1, and face pressure increases with fluid pressure and slowly increases, and is applicable to the occasion that fluid pressure is higher.For general liquid, can be used for 0.7 ~ 4.0MPa, even can reach 10MPa.But not balanced mechanical seal, due to can not the effect of balancing liquid pressure to end face, face pressure increases with fluid pressure, and loading coefficient is all greater than 1.Under high liquid pressure, because face pressure increases, affect its working life.
Thereby the principle of balance type machine envelope is to make bearing area be less than dynamic and static loop contacts area (being sealing ring surface) by reducing the bearing area of rotating ring.At present, thereby balance type machine envelope reduces rotating ring bearing area, by step is set in rotating ring inner side, reduces sealing ring surface internal diameter and realize, so also must step be set in relevant position in installation shaft, form the shaft shoulder.The problem existing mainly contains: the one, and cumbersome when installing and keeping in repair, need to guarantee there is certain interval between rotating ring step and the shaft shoulder; The 2nd, axle is topped bar and is made processing cost increase, and it is concentrated at shaft shoulder place, easily to form stress, reduces the intensity of axle.
Summary of the invention
The utility model provides a kind of mechanical sealing device used for pump, by the improvement to movable ring structure, can well address the above problem, and has advantages of simple in structure, easy disassembly, is easy to safeguard.Adopt the pump series products of this kind of structure, can reduce the procedure of pump shaft, improve the intensity of axle, and be easy to installation and maintenance.
, comprise stationary ring, rotating ring, elastic device, transmission device and elastic sealing device.Wherein,
Described transmission device is enclosed within on axle, and with described between centers, elastic sealing device is set;
Described transmission device and described axle are combined by being arranged on along described transmission device excircle Cock screw perpendicular to axial direction;
Described moving ring sleeve on the cylndrical surface, outside of described rotating ring extension, and has described elastic sealing device at described rotating ring inner side cover at described transmission device, and described rotating ring can move forward and backward along described transmission device, by elastic sealing device, seals;
Along several elastic device parallel with described axle and transmission screws are set on described transmission device circumferential surface, described rotating ring is connected with described transmission device;
Described stationary ring and described rotating ring rubbing contact, its contact end face is perpendicular to described axle;
Described stationary ring inner side is provided with annular recess, and flexible seal arrangement is overlapped in outside;
Described rotating ring and described transmission device have formed the annular recess of a sealing in described rotating ring inner side.
As preferably, described rotating ring can be comprised of two-part structure, wherein, partly adopts the better alloy of wear-resisting property to make, further to reduce costs with described stationary ring rubbing contact.
Compared with prior art, the utlity model has following useful technique effect: structure of the present utility model is simpler, convenient installation and maintenance.More crucial, first: transmission device of the present utility model has replaced and axle processed to the design of step in the past to rotating ring extension, therefore simplified course of working, avoided stress to concentrate the problem that affects on axle intensity of bringing; Second: after cancelling the shaft shoulder, machine envelope is easy for installation, does not need to consider the relativeness between rotating ring step and the shaft shoulder.
Accompanying drawing explanation
Fig. 1 is the axial section schematic diagram of the 1st kind of mode of execution of the utility model.
Fig. 2 is the axial section schematic diagram of the 2nd kind of mode of execution of the utility model.
Embodiment
Below in conjunction with embodiment and accompanying drawing, describe the utility model in detail, but the utility model is not limited in this.
As shown in Figure 1,, comprising: the elastic sealing device that stationary ring 2, rotating ring 3, rotating seat 4, the elastic device being comprised of 3 springs 6, O RunddichtringO form and the transmission device being formed by retainer 8, Cock screw 9 and transmission screw 10.Wherein,
Rotating ring 3 and rotating seat 4 form a movable ring structure, and rotating ring 3 is enclosed within rotating seat 4 inner sides, and the two adopts different materials to make;
Rotating seat 4 is enclosed within retainer 8 on the cylndrical surface, outside of rotating ring 3 extensions, and has O RunddichtringO 5 at rotating seat 4 inner side covers, and rotating seat 4 can move forward and backward along retainer 8, and the two is sealed by O RunddichtringO 5;
Along 3 springs 6 that are parallel to axle 11 are set on the circumferential surface of retainer 8,6, spring is mutually 120 degree to be arranged, and 3 transmission screws 10 are equally also set, and is mutually 120 degree and arranges, be 60 degree arrangements with adjacent spring 6, spring 6 is connected retainer 8 with transmission screw 10 with rotating seat 4;
Rotating ring 3 has formed an annular seal groove with rotating seat 4, retainer 8 in rotating seat 4 inner sides.
During work, stationary ring 2 is motionless, the elastic force of spring 6 makes rotating ring 3 and stationary ring 2 close contacts, axle 11 drives retainer 8 to rotate, retainer 8 drives again rotating seat 4 and rotating ring 3 rotations that are connected with retainer 8 by transmission screw 10, the rubbing surface of the rubbing surface of rotating ring 3 and stationary ring 2 forms seal rotary face, to prevent liquid leakage in pump.
As shown in Figure 2, a kind of mechanical sealing device used for pump, comprising: elastic device, the elastic sealing device that stationary ring 2, rotating ring 3, spring 6 form and the transmission device being comprised of pushing pad 23, throw-out collar 24, Cock screw 9, retainer 8.Wherein,
Along retainer 8 excircles, arrange 2 perpendicular to the Cock screw 9 of axle 11, be mutually 90 degree and arrange, to guarantee that retainer 8 and axle 11 combine closely;
Meanwhile, 6 springs 6 that are parallel to axle 11 are set on retainer 8 circumferential surfacies, are mutually 60 degree and arrange, 6 transmission screws 10 are equally also set, be mutually 60 degree and arrange, be 30 degree arrangements with adjacent spring, spring 6 is connected retainer 8 with transmission screw 10 with throw-out collar 24;
Retainer 26 to a sheathed annular pushing pad 23 on the cylndrical surface, outside of rotating ring 3 extensions and an O RunddichtringO 22 as elastic sealing device, the O RunddichtringO 22 sheathed rotating rings 3 in outside, pushing pad 23 and rotating ring 3 can move forward and backward along retainer 26;
Rotating ring 3 has formed an annular seal groove with retainer 8 extensions in rotating ring 3 inner sides.
During work, stationary ring 2 is motionless, and the elastic force of spring 6 makes rotating ring 3 and stationary ring 2 close contacts, and axle 11 drives retainer 8 to rotate, and retainer 8 drives again rotating ring 3 rotations, and the rubbing surface of the rubbing surface of rotating ring 3 and stationary ring 2 forms seal rotary face, to prevent liquid leakage in pump.
In addition to the implementation, the utility model can also have other mode of executions.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.
Claims (4)
1. a mechanical sealing device used for pump, comprises stationary ring, rotating ring, elastic device, transmission device and elastic sealing device, it is characterized in that,
Described transmission device is enclosed within on axle, and with described between centers, elastic sealing device is set;
Described transmission device and described axle are combined by being arranged on along described transmission device excircle Cock screw perpendicular to axial direction;
Described moving ring sleeve is at described transmission device on the cylndrical surface, outside of described rotating ring extension, and at the flexible seal arrangement of described rotating ring inner side cover, described rotating ring can move forward and backward along described transmission device, by described elastic packing, seals;
Along several elastic device parallel with described axle and transmission screws are set on described transmission device circumferential surface, described rotating ring is connected with described transmission device;
Described stationary ring and described rotating ring rubbing contact, its contact end face is perpendicular to described axle.
2. mechanical sealing device used for pump according to claim 1, is characterized in that, described rotating ring and described transmission device have formed the annular recess of a sealing in described rotating ring inner side.
3. mechanical sealing device used for pump according to claim 2, is characterized in that, described rotating ring is comprised of two-part structure, wherein adopts the better alloy of wear-resisting property with the part of described stationary ring rubbing contact.
4. mechanical sealing device used for pump according to claim 1, is characterized in that, described stationary ring inner side is provided with circular step, and flexible seal arrangement is overlapped in outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320444429.0U CN203413123U (en) | 2013-07-23 | 2013-07-23 | Mechanical sealing device for pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320444429.0U CN203413123U (en) | 2013-07-23 | 2013-07-23 | Mechanical sealing device for pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203413123U true CN203413123U (en) | 2014-01-29 |
Family
ID=49976012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320444429.0U Expired - Lifetime CN203413123U (en) | 2013-07-23 | 2013-07-23 | Mechanical sealing device for pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203413123U (en) |
-
2013
- 2013-07-23 CN CN201320444429.0U patent/CN203413123U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: No. 46 Hangzhou City, Zhejiang province 311107 Yuhang District Renhe Street Renhe Road Patentee after: NANFANG ZHONGJIN ENVIRONMENT CO.,LTD. Address before: Renhe Town of Yuhang District of Hangzhou City, Zhejiang province 311107 Patentee before: Nanfang Pump Industry Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140129 |