CN217713645U - Gas-liquid membrane combined type double-end-face mechanical sealing structure - Google Patents
Gas-liquid membrane combined type double-end-face mechanical sealing structure Download PDFInfo
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- CN217713645U CN217713645U CN202221878539.3U CN202221878539U CN217713645U CN 217713645 U CN217713645 U CN 217713645U CN 202221878539 U CN202221878539 U CN 202221878539U CN 217713645 U CN217713645 U CN 217713645U
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Abstract
The utility model belongs to the technical field of mechanical seal, specifically disclose a modular double mechanical seal structure of gas-liquid membrane, including the gland, the axle sleeve, air film sealing mechanism and liquid film sealing mechanism, axle sleeve fixed mounting is in the pivot, be fixed with the transmission position circle on the axle sleeve, transmission position circle side is equipped with the compression volume locating piece, the compression volume locating piece passes through bolt and transmission position circle fixed connection, compression volume locating piece side is equipped with air film seal stationary ring seat, air film seal stationary ring seat and compression volume locating piece fixed connection, gland fixed connection is on air film seal stationary ring seat, the gland middle part is equipped with the cavity, be equipped with air film sealing mechanism in the cavity, liquid film sealing mechanism fixed connection is on the axle sleeve, through using air film seal and liquid film seal combination, be applicable to the environment that sealing liquid and medium all belong to easily vaporized material, this structure adopts the double end face structure that contact non-contact made up mutually, the long period operation of equipment has been guaranteed, environmental protection and safe requirement, the cost is also reduced.
Description
Technical Field
The utility model belongs to the technical field of mechanical seal, concretely relates to modular double mechanical seal structure of gas-liquid membrane.
Background
The mechanical seal for the pump has complex use condition, often fails and is damaged, particularly, a medium easy to vaporize is used, in order to overcome the defect that the medium is volatile to cause dry friction on the end face of the mechanical seal and cause seal leakage, the main body seal adopts dry gas seal so as not to be influenced by vaporization of the medium, and meanwhile, the end face of the dry gas seal is in contact with clean gas through filtration control of main seal gas. However, the dry gas seal is expensive in manufacturing cost, difficult to process, high in installation requirement and multiple in auxiliary facilities, so that the auxiliary seal adopts a contact type liquid film seal structure which is cheap in manufacturing cost, simple in structure and easy to install, and especially comprises the following steps: the sealing failure conditions of machine pumps and the like of high-pressure low-temperature easy-vaporization media such as methanol, ethylene, propylene, natural gas and the like are particularly outstanding, the original design of the media is mostly a contact liquid film sealing structure with a single end face or double end faces, but due to the easy-vaporization characteristic of the media, the dry friction phenomenon often occurs in the sealing of the structure, the temperature of a friction pair rises instantly, the end face of the friction pair is damaged, an auxiliary sealing ring causes the carbonization phenomenon due to high temperature to cause the premature failure of mechanical sealing, leakage occurs, the maintenance is frequent, and the potential safety hazard is huge once leakage is caused due to the characteristic of the media.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a modular two terminal surface mechanical seal structure of gas-liquid membrane to solve the traditional seal structure who proposes among the above-mentioned background art and be not suitable for the easy gasified problem of medium.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a modular double mechanical seal structure of gas-liquid membrane, includes gland, axle sleeve, air film sealing mechanism and liquid film sealing mechanism, axle sleeve fixed mounting is in the pivot, is fixed with the transmission position circle on the axle sleeve, transmission position circle side is equipped with the compression volume locating piece, the compression volume locating piece passes through bolt and transmission position circle fixed connection, compression volume locating piece side is equipped with air film seal stationary ring seat, air film seal stationary ring seat and compression volume locating piece fixed connection, gland fixed connection is on air film seal stationary ring seat, the gland middle part is equipped with the cavity, be equipped with air film sealing mechanism in the cavity, liquid film sealing mechanism fixed connection is on the axle sleeve.
The air film sealing mechanism comprises an air film sealing static ring, an air film sealing moving ring and an air film sealing moving ring seat, the air film sealing moving ring seat is fixedly connected to the shaft sleeve, the air film sealing static ring is fixed in the air film sealing static ring seat, the air film sealing moving ring is fixed in the air film sealing moving ring seat, the end faces of the air film sealing static ring and the air film sealing moving ring are attached to each other, and a sealing ring compensation original paper A is arranged in the air film sealing moving ring seat.
The liquid film sealing mechanism comprises a liquid film sealing static ring, a liquid film sealing movable ring and a liquid film sealing movable ring seat, the liquid film sealing movable ring seat is fixedly connected to the shaft sleeve, the liquid film sealing movable ring is fixed in the liquid film sealing movable ring seat, the liquid film sealing static ring is fixed at the position, close to the shaft sleeve, of the gland, and a sealing ring compensation element B is arranged in the liquid film sealing movable ring seat.
And an air film sealing auxiliary sealing ring is arranged between the air film sealing movable ring and the air film sealing movable ring seat, so that the sealing performance is enhanced.
And a liquid film sealing auxiliary sealing ring is arranged between the liquid film sealing movable ring and the liquid film sealing movable ring seat, so that the sealing performance is enhanced.
A clamp spring is arranged between the liquid film sealing static ring and the gland, so that the liquid film sealing static ring is prevented from displacing due to back pressure and evacuation.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses an use the combination of gas film seal and liquid film seal, be applicable to sealed liquid and medium and all belong to the environment of the easy vaporized material, this structure adopts the double-ended face structure that contact and non-contact combined together, and has guaranteed the requirement of long period operation, environmental protection and the safety of equipment, the cost is also reduced.
Drawings
Fig. 1 is the utility model discloses a combined type double-ended mechanical seal structure's of gas-liquid membrane section structure sketch map.
In the figure: 1. a gland; 2. sealing the static ring seat by an air film; 3. a compression amount positioning block; 4. a transmission positioning ring; 5. a shaft sleeve; 6. a gland sealing ring; 7. sealing the static ring by an air film; 8. a gas film sealing movable ring; 9. an auxiliary sealing ring is sealed by an air film; 10. the air film seals the movable ring seat; 11. a seal ring compensation element A; 12. sealing the static ring by a liquid film; 13. the liquid film seals the movable ring; 14. a clamp spring; 15. a shaft sleeve sealing ring; 16. the liquid film seals the movable ring seat; 17. the liquid film seals the auxiliary seal ring; 18. the seal ring compensates for original B.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model provides a following technical implementation scheme:
referring to fig. 1, a gas-liquid membrane combined type double-end-face mechanical sealing structure comprises a gland 1, a shaft sleeve 5, a gas membrane sealing mechanism and a liquid membrane sealing mechanism, wherein the shaft sleeve 5 is fixedly installed on a rotating shaft and rotates along with the rotating shaft, a transmission positioning ring 4 is fixed on the shaft sleeve 5, a compression quantity positioning block 3 is arranged on the side surface of the transmission positioning ring 4, the compression quantity positioning block 3 is fixedly connected with the transmission positioning ring 4 through bolts, a gas membrane sealing stationary ring seat 2 is arranged on the side surface of the compression quantity positioning block 3, the gas membrane sealing stationary ring seat 2 is fixedly connected with the compression quantity positioning block 3, the gland 1 is fixedly connected to the gas membrane sealing stationary ring seat 2, a cavity is arranged in the middle of the gland 1, and the gas membrane sealing mechanism is arranged in the cavity; the air film sealing mechanism comprises an air film sealing static ring 7, an air film sealing movable ring 8 and an air film sealing movable ring seat 10, the air film sealing movable ring seat 10 is fixedly connected to the shaft sleeve 5, an air film sealing auxiliary sealing ring 9 is arranged between the air film sealing movable ring 8 and the air film sealing movable ring seat 10, the air film sealing static ring 7 is fixed in the air film sealing static ring seat 2, the air film sealing movable ring 8 is fixed in the air film sealing movable ring seat 10, the air film sealing static ring 7 is attached to the end face of the air film sealing movable ring 8, a sealing ring compensation element A11 is arranged in the air film sealing movable ring seat 10, and when the sealing ring is worn, the end faces of the air film sealing static ring 7 and the air film sealing movable ring 8 are still attached; a liquid film sealing mechanism is arranged at the rear side of the gland 1, the liquid film sealing mechanism comprises a liquid film sealing static ring 12, a liquid film sealing movable ring 13 and a liquid film sealing movable ring seat 16, the liquid film sealing movable ring seat 16 is fixedly connected on the shaft sleeve 5, and a liquid film sealing auxiliary sealing ring 17 is arranged between the liquid film sealing movable ring 13 and the liquid film sealing movable ring seat 16; the liquid film seals the rotating ring 13 and fixes in the liquid film seals the rotating ring seat 16, the liquid film seals the stationary ring 12 and fixes in gland 1 and is close to 5 departments of axle sleeve, and is equipped with jump ring 14 between liquid film seals stationary ring 12 and the gland 1, prevents to cause the displacement of liquid film seals stationary ring 12 because of the backpressure and manage to find time, is equipped with sealing ring compensation original paper B18 in the liquid film seals the rotating ring seat 16, makes the liquid film seal stationary ring 12 and the laminating of the terminal surface of liquid film seals the rotating ring 13 still when the sealing ring appears wearing and tearing.
The utility model provides a gas film seal belongs to the contact and seals, and contact seal structure is simple, let out leakage quantity little, and the liquid film seal belongs to non-contact sealed, and friction state is that fluid friction, elastic fluid power are lubricated, and calorific capacity, consumption are less, and normal during operation does not have wearing and tearing, seals the liquid medium and is process gas itself or nitrogen gas, does not have any influence to the technology.
It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solutions of the present invention should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.
Claims (6)
1. The utility model provides a modular double mechanical seal structure of gas-liquid membrane, includes gland (1), axle sleeve (5), gas film sealing mechanism and liquid film sealing mechanism, its characterized in that: the improved pneumatic sealing device is characterized in that the shaft sleeve (5) is fixedly mounted on the rotating shaft, the transmission positioning ring (4) is fixed on the shaft sleeve (5), the compression amount positioning block (3) is arranged on the side face of the transmission positioning ring (4), the compression amount positioning block (3) is fixedly connected with the transmission positioning ring (4) through a bolt, the air film sealing static ring seat (2) is arranged on the side face of the compression amount positioning block (3), the air film sealing static ring seat (2) is fixedly connected with the compression amount positioning block (3), the gland (1) is fixedly connected onto the air film sealing static ring seat (2), a cavity is arranged in the middle of the gland (1), an air film sealing mechanism is arranged in the cavity, and the liquid film sealing mechanism is fixedly connected onto the shaft sleeve (5).
2. The gas-liquid membrane combined double-end-face mechanical seal structure according to claim 1, characterized in that: air film sealing mechanism includes air film seal quiet ring (7), air film seal rotating ring (8) and air film seal rotating ring seat (10), air film seal rotating ring seat (10) fixed connection is on axle sleeve (5), air film seal quiet ring (7) are fixed in air film seal quiet ring seat (2), air film seal rotating ring (8) are fixed in air film seal rotating ring seat (10), the terminal surface of air film seal quiet ring (7) and air film seal rotating ring (8) is laminated mutually, be equipped with sealing ring compensation original paper A (11) in air film seal rotating ring seat (10).
3. The gas-liquid membrane combined double-end-face mechanical seal structure according to claim 2, characterized in that: the liquid film sealing mechanism comprises a liquid film sealing static ring (12), a liquid film sealing movable ring (13) and a liquid film sealing movable ring seat (16), the liquid film sealing movable ring seat (16) is fixedly connected onto the shaft sleeve (5), the liquid film sealing movable ring (13) is fixed in the liquid film sealing movable ring seat (16), the liquid film sealing static ring (12) is fixed at the position, close to the shaft sleeve (5), of the gland (1), and a sealing ring compensation original piece B (18) is arranged in the liquid film sealing movable ring seat (16).
4. The gas-liquid membrane combined double-end-face mechanical seal structure according to claim 2, characterized in that: and an air film sealing auxiliary sealing ring (9) is arranged between the air film sealing movable ring (8) and the air film sealing movable ring seat (10).
5. A combined double mechanical seal structure for a gas-liquid membrane according to claim 3, wherein: and a liquid film sealing auxiliary sealing ring (17) is arranged between the liquid film sealing movable ring (13) and the liquid film sealing movable ring seat (16).
6. A gas-liquid membrane combined double mechanical seal structure according to claim 3, characterized in that: a clamp spring (14) is arranged between the liquid film sealing static ring (12) and the gland (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221878539.3U CN217713645U (en) | 2022-07-20 | 2022-07-20 | Gas-liquid membrane combined type double-end-face mechanical sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221878539.3U CN217713645U (en) | 2022-07-20 | 2022-07-20 | Gas-liquid membrane combined type double-end-face mechanical sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217713645U true CN217713645U (en) | 2022-11-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221878539.3U Active CN217713645U (en) | 2022-07-20 | 2022-07-20 | Gas-liquid membrane combined type double-end-face mechanical sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217713645U (en) |
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2022
- 2022-07-20 CN CN202221878539.3U patent/CN217713645U/en active Active
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