CN213017712U - Double-end-face mechanical seal - Google Patents
Double-end-face mechanical seal Download PDFInfo
- Publication number
- CN213017712U CN213017712U CN202021775369.7U CN202021775369U CN213017712U CN 213017712 U CN213017712 U CN 213017712U CN 202021775369 U CN202021775369 U CN 202021775369U CN 213017712 U CN213017712 U CN 213017712U
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- Prior art keywords
- subassembly
- quiet
- ring
- transmission
- ring seat
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- 230000005540 biological transmission Effects 0.000 claims abstract description 67
- 230000003068 static effect Effects 0.000 claims abstract description 17
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 230000000149 penetrating effect Effects 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
The utility model provides a double mechanical seal belongs to mechanical seal technical field, include: the transmission device comprises a transmission disc, a first movable component, a first static component, a second movable component, a second static component, a transmission spring and a conical spring, wherein a connecting key used for being connected with a transmission shaft is arranged on the transmission disc, one end of the transmission spring penetrates through the transmission disc, the other end of the transmission spring is in linkage connection with the first movable component, the first static component is in abutting connection with the first movable component, the second static component is connected with the first static component, the second movable component is in abutting connection with the second static component, one end of the conical spring is in linkage connection with the second movable component, and the other end of the conical spring is arranged on the transmission shaft in a penetrating mode; the utility model has the advantages that: the mechanical sealing structure with the double end faces is ingenious and reasonable, and all the parts are very convenient to assemble with the transmission shaft and are tightly connected.
Description
Technical Field
The utility model belongs to the technical field of mechanical seal, a double mechanical seal is related to.
Background
The mechanical seal is a device for preventing fluid leakage, which is formed by at least one pair of end faces perpendicular to the rotation axis, and the end faces are kept in fit and relatively slide under the action of fluid pressure and the elastic force (or magnetic force) of a compensation mechanism and the cooperation of an auxiliary seal.
However, in the existing mechanical seal, there is a double-end-face mechanical seal structure, that is, two mechanical seals are arranged on the shaft body, but the double-end-face mechanical seal structure has certain defects in structure, and each component is relatively troublesome to assemble with the transmission shaft, and the connection is not tight enough, so that there is a certain improvement space.
Disclosure of Invention
The utility model aims at the above-mentioned problem that prior art exists, double mechanical seal has been proposed.
The purpose of the utility model can be realized by the following technical proposal: a double mechanical seal comprising: the transmission dish, firstly move subassembly, first quiet subassembly, second and move subassembly, the quiet subassembly of second, transmission spring and conical spring, be provided with the connecting key that is used for being connected with the transmission shaft on the transmission dish, transmission spring's one end is worn to establish on the transmission dish and the other end with the first subassembly linkage that moves is connected, first quiet subassembly with the first subassembly of moving is contradicted and is connected, the quiet subassembly of second with first quiet subassembly is connected, the second move the subassembly with the quiet subassembly of second is contradicted and is connected, conical spring one end with the second moves the subassembly linkage and is connected and the other end is used for wearing to establish on the transmission shaft.
Preferably, the first stationary component comprises a first stationary ring and an inner stationary ring seat, the second stationary component comprises a second stationary ring and an outer stationary ring seat, the first stationary ring is embedded on the end face of the inner stationary ring seat, the second stationary ring is arranged in the outer stationary ring seat, and the inner stationary ring seat is connected in the outer stationary ring seat.
Preferably, the first moving assembly includes a first moving ring seat and a first moving ring, the first moving ring is connected to the first moving ring seat, and the transmission spring is linked to the first moving ring seat.
Preferably, the second movable assembly comprises a second movable ring seat and a second movable ring, the second movable ring is connected with the second movable ring seat, and the conical spring is in linkage connection with the second movable ring seat.
Preferably, a sealing ring is arranged between the inner static ring seat and the outer static ring seat.
Preferably, the outer stationary ring seat is provided with a stop pin, and the stop pin passes through the outer stationary ring seat and the inner stationary ring seat.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the mechanical sealing structure with the double end faces is ingenious and reasonable, and all the parts are very convenient to assemble with the transmission shaft and are tightly connected.
2. Two big springs are adopted for transmission, namely, the transmission spring and the conical spring respectively transmit the first movable assembly and the second movable assembly, so that the left-right transmission of the transmission shaft can be adapted, namely, no matter the transmission shaft rotates left or right, the mechanical seal cannot be influenced.
3. The sealing washer can guarantee the sealed between interior quiet ring seat and the outer quiet ring seat, prevents in the liquid seepage mechanical seal.
Drawings
Fig. 1 is a schematic structural view of the double mechanical seal of the present invention.
Fig. 2 is a schematic view of the connection relationship between the first stationary component and the second stationary component of the present invention.
In the figure, 100, the transmission disc; 110. a connecting bond; 200. a first movable assembly; 210. a first movable ring seat; 220. a first rotating ring; 300. a first stationary component; 310. a first stationary ring; 320. an inner stationary ring seat; 400. a second movable assembly; 410. a second movable ring seat; 420. a second rotating ring; 500. a second stationary component; 510. a second stationary ring; 520. an outer stationary ring seat; 600. a transmission spring; 700. a conical spring; 800. a seal ring; 900. a retaining pin.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
As shown in fig. 1 and 2, a double mechanical seal includes: drive plate 100, first movable component 200, first stationary component 300, second movable component 400, second stationary component 500, drive spring 600, and conical spring 700.
Preferably, the transmission plate 100, the transmission spring 600, the first movable component 200, the first stationary component 300, the second stationary component 500, the second movable component 400 and the conical spring 700 are sequentially sleeved from left to right in the axial direction of the transmission shaft.
The transmission disc 100 is provided with a connecting key 110 for connecting with a transmission shaft, in brief, the transmission disc 100 is of a ring-shaped structure, the connecting key 110 is arranged in an inner hole of the transmission disc, and the connecting key 110 is arranged on the transmission shaft, so that the transmission shaft and the transmission disc 100 are linked together.
One end of the transmission spring 600 penetrates through the transmission disc 100 and the other end is in linkage connection with the first movable component 200, and the first stationary component 300 is in abutting connection with the first movable component 200.
Drive spring 600 sets up between drive plate 100 and first movable subassembly 200, and drive plate 100 is connected through drive spring 600 and the linkage of first movable subassembly 200, when the transmission shaft rotates, can drive plate 100 and rotate, drive plate 100 drives first movable subassembly 200 through drive spring 600 and rotates, make first movable subassembly 200 be connected with the transmission shaft linkage, in addition, drive spring 600 can also push first movable subassembly 200 to first quiet subassembly 300, make first movable subassembly 200 obtain axial elastic compensation power, ensure that first movable subassembly 200 and first quiet subassembly 300 are closely laminated together.
The second static assembly 500 is connected with the first static assembly 300, and preferably, the first static assembly 300 and the second static assembly 500 are connected and sealed, so that liquid cannot enter the first static assembly 300 and the second static assembly 500.
The second moving component 400 is connected with the second static component 500 in an abutting mode, one end of the conical spring 700 is connected with the second moving component 400 in a linkage mode, and the other end of the conical spring is arranged on the transmission shaft in a penetrating mode.
Preferably, conical spring 700 one end diameter is great and the other end diameter is less, the great one end of its diameter is connected with the linkage of second subassembly, and less one end can inlay and establish on the transmission shaft or wear to establish on the transmission shaft, conical spring 700 can drive the second and move subassembly 400 and rotate when the transmission shaft rotates, thereby make the second move subassembly 400 and transmission shaft synchronous rotation, and conical spring 700 can also move the second and move subassembly 400 and push to the quiet subassembly 500 of second, make the second move subassembly 400 can be pushed up on the quiet subassembly 500 of second by elasticity.
The mechanical sealing structure with the double end faces is ingenious and reasonable, and all the parts are very convenient to assemble with the transmission shaft and are tightly connected.
In addition to the above advantages, in the present embodiment, since two large springs are used for transmission, that is, the transmission spring 600 and the conical spring 700 respectively transmit the first moving assembly 200 and the second moving assembly 400, the present embodiment can adapt to left-right transmission of the transmission shaft, that is, the mechanical seal is not affected no matter the transmission shaft rotates left or right.
As shown in fig. 1 and fig. 2, based on the above embodiment, the first stationary assembly 300 includes a first stationary ring 310 and an inner stationary ring seat 320, and the inner stationary ring seat 320 is actually an annular stainless steel ring, which is sleeved on the transmission shaft.
The second stationary assembly 500 includes a second stationary ring 510 and an outer stationary ring seat 520, the outer stationary ring seat 520 has a through hole, and the through hole is greater than or equal to the outer diameter of the inner stationary ring seat 320.
The first stationary ring 310 is embedded on the end surface of the inner stationary ring seat 320, the second stationary ring 510 is arranged in the outer stationary ring seat 520, and the inner stationary ring seat 320 is connected in the outer stationary ring seat 520.
Preferably, in a practical structure, the inner stationary ring seat 320 may be disposed in the outer stationary ring seat 520, so that the two are connected together and form a sealing structure, since the end surface of the first stationary ring seat 310 is provided with the first stationary ring 310, the opening of the second stationary ring seat 510 is provided with the second stationary ring 510, so that both ends of the structure formed by the two are respectively kept sealed by the first stationary ring 310 and the second stationary ring 510, and the seal is kept between the first stationary ring seat 310 and the second stationary ring seat 510.
As shown in fig. 1, in addition to the above embodiments, the first moving assembly 200 includes a first moving ring seat 210 and a first moving ring 220, the first moving ring 220 is connected to the first moving ring seat 210, and the transmission spring 600 is linked to the first moving ring seat 210.
Preferably, the first rotating ring base 210 is provided with an annular opening, the first rotating ring 220 is actually mounted on the first rotating ring base 210, the first rotating ring 220 can be driven to rotate when the first rotating ring base 210 rotates, and the transmission spring 600 plays a role in transmission, so that the transmission spring 600 can drive the whole first rotating assembly 200 to rotate.
As shown in fig. 1, in addition to the above embodiment, the second moving assembly 400 includes a second moving ring seat 410 and a second moving ring 420, the second moving ring 420 is connected to the second moving ring seat 410, and the conical spring 700 is linked to the second moving ring seat 410.
Preferably, the second rotating ring seat 410 is provided with an annular opening, the second rotating ring 420 is actually mounted on the second rotating ring seat 410, the second rotating ring 420 can be driven to rotate when the second rotating ring seat 410 rotates, and the conical spring 700 plays a role in transmission, so that the conical spring 700 can drive the whole second rotating assembly 400 to rotate.
As shown in fig. 1, in addition to the above embodiment, a seal ring 800 is provided between the inner stationary ring seat 320 and the outer stationary ring seat 520.
Preferably, the sealing ring 800 can ensure the sealing between the inner stationary seat 320 and the outer stationary seat 520, and prevent the liquid from leaking into the mechanical seal.
As shown in fig. 1, on the basis of the above embodiment, a stop pin 900 is disposed on the outer stationary ring seat 520, and the stop pin 900 passes through the outer stationary ring seat 520 and the inner stationary ring seat 320.
Preferably, the inner stationary ring seat 320 and the outer stationary ring seat 520 are connected, specifically, both need to be fixed in the axial direction, and also need to keep the inner stationary ring seat 320 and the outer stationary ring seat 520 stationary with respect to the transmission shaft, so the stop pin 900 is especially inserted into the inner stationary ring seat 320 and the outer stationary ring seat 520, so that both can be connected together, and can be prevented from rotating.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (6)
1. A double mechanical seal, comprising: the transmission dish, firstly move subassembly, first quiet subassembly, second and move subassembly, the quiet subassembly of second, transmission spring and conical spring, be provided with the connecting key that is used for being connected with the transmission shaft on the transmission dish, transmission spring's one end is worn to establish on the transmission dish and the other end with the first subassembly linkage that moves is connected, first quiet subassembly with the first subassembly of moving is contradicted and is connected, the quiet subassembly of second with first quiet subassembly is connected, the second move the subassembly with the quiet subassembly of second is contradicted and is connected, conical spring one end with the second moves the subassembly linkage and is connected and the other end is used for wearing to establish on the transmission shaft.
2. The double mechanical seal of claim 1, wherein: first quiet subassembly includes first quiet ring sum interior quiet ring holder, the quiet subassembly of second includes the quiet ring sum outer quiet ring holder of second, first quiet ring inlays to be established on the terminal surface of interior quiet ring holder, the quiet ring setting of second is in the outer quiet ring holder, interior quiet ring holder is connected in the outer quiet ring holder.
3. The double mechanical seal of claim 1, wherein: the first movable assembly comprises a first movable ring seat and a first movable ring, the first movable ring is connected with the first movable ring seat, and the transmission spring is in linkage connection with the first movable ring seat.
4. The double mechanical seal of claim 3, wherein: the second movable assembly comprises a second movable ring seat and a second movable ring, the second movable ring is connected with the second movable ring seat, and the conical spring is in linkage connection with the second movable ring seat.
5. The double mechanical seal of claim 2, wherein: and a sealing ring is arranged between the inner static ring seat and the outer static ring seat.
6. The double mechanical seal of claim 2, wherein: and the outer stationary ring seat is provided with a stop pin, and the stop pin penetrates through the outer stationary ring seat and the inner stationary ring seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021775369.7U CN213017712U (en) | 2020-08-21 | 2020-08-21 | Double-end-face mechanical seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021775369.7U CN213017712U (en) | 2020-08-21 | 2020-08-21 | Double-end-face mechanical seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213017712U true CN213017712U (en) | 2021-04-20 |
Family
ID=75468171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021775369.7U Active CN213017712U (en) | 2020-08-21 | 2020-08-21 | Double-end-face mechanical seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213017712U (en) |
-
2020
- 2020-08-21 CN CN202021775369.7U patent/CN213017712U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Ningbo Chuangwei Machinery Co.,Ltd. Assignor: NINGBO DONGLIAN MECHANICAL SEAL Co.,Ltd. Contract record no.: X2023980053451 Denomination of utility model: Double end mechanical seal Granted publication date: 20210420 License type: Common License Record date: 20231221 |