CN211599079U - Mechanical sealing device - Google Patents
Mechanical sealing device Download PDFInfo
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- CN211599079U CN211599079U CN201922144952.1U CN201922144952U CN211599079U CN 211599079 U CN211599079 U CN 211599079U CN 201922144952 U CN201922144952 U CN 201922144952U CN 211599079 U CN211599079 U CN 211599079U
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Abstract
The utility model belongs to the field of mechanical sealing and discloses a mechanical sealing device, which comprises a dynamic sealing ring, a half-moon snap ring, a static sealing ring, a wave-shaped sealing seat and a wave-shaped sealing seat gland, wherein the dynamic sealing ring and the half-moon snap ring are sleeved on a pump shaft; the middle part of the wave-shaped sealing seat is wave-shaped, and the static sealing ring and the wave-shaped sealing seat are inserted with the bulge through the clamping groove; one end of the wave-shaped sealing seat gland extends into the space between the wave-shaped sealing seat and the shaft sleeve and is inserted into the bulge through the clamping groove, and the other end of the wave-shaped sealing seat gland is provided with an annular groove; the wave-shaped sealing seat gland is fixedly connected with the pump cover through bolts, and the wave-shaped sealing seat is tightly pressed between the static sealing ring, the wave-shaped sealing seat gland and the pump cover; the step of the wave-shaped sealing seat is tightly pressed on the end surface of the pump cover, and a certain gap is left between the pump cover and the wave-shaped sealing seat gland; the end faces of the movable sealing ring and the static sealing ring are tightly attached, and the half-moon clamping ring and the shaft sleeve clamp the movable sealing ring so that the movable sealing ring can rotate along with the pump shaft; prevent leakage and medium splash, and has adjustable sealing compression amount and long service life.
Description
Technical Field
The utility model belongs to the technical field of mechanical seal and specifically relates to a mechanical seal device.
Background
The pump is a machine for converting mechanical energy into energy of liquid, is used for pressurizing and conveying the liquid, and is a universal machine widely applied in national economy. The continuous and stable operation of the pump is vital, and in the prior art, under the condition of micro leakage between mechanical sealing surfaces of pump equipment, because the accumulation of media can generate crystallization on the mechanical sealing surfaces, rotating parts are stuck and the mechanical sealing surfaces are condensed, so that the pump equipment is greatly leaked and damaged; in addition, the large leakage of the pump easily causes the splashing of the medium in the pump, and is very easy to cause the injury of personnel; after the pump equipment is installed, the compression amount of the pump equipment can not be adjusted, once leakage occurs, the mechanical seal needs to be replaced, the replacement period is short, and the working efficiency is low.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a simple structure, long service life, medium splash when preventing to leak, sealed compression capacity adjustable mechanical seal device.
The utility model adopts the technical proposal that:
a mechanical sealing device is arranged between a pump shaft and a pump cover, a shaft sleeve is fixedly sleeved on the pump shaft, the mechanical sealing device comprises a movable sealing ring and a half-moon snap ring which are fixedly sleeved on the pump shaft, and a static sealing ring, a waveform sealing seat and a waveform sealing seat gland which are sleeved on the shaft sleeve; the middle part of the wave-shaped sealing seat is wave-shaped, the inner wall of one end of the wave-shaped sealing seat is provided with a bulge, and the outer wall of the other end of the wave-shaped sealing seat is step-shaped; a first clamping groove arranged at one end of the static sealing ring is inserted with the bulge on the wave-shaped sealing seat; the wave-shaped sealing seat gland is of a T-shaped flange structure, one end of the wave-shaped sealing seat gland extends into the space between the wave-shaped sealing seat and the shaft sleeve and is inserted into the bulge on the wave-shaped sealing seat through a second clamping groove arranged at the end part of the wave-shaped sealing seat gland, and the other end of the wave-shaped sealing seat gland is provided with an annular groove matched with the wave-shaped sealing seat; the wave-shaped sealing seat gland is fixedly connected with the pump cover through bolts, and the wave-shaped sealing seat is tightly pressed between the static sealing ring, the wave-shaped sealing seat gland and the pump cover; the step of the wave-shaped sealing seat is tightly pressed on the end surface of the pump cover, and a certain gap is reserved between the pump cover and the wave-shaped sealing seat gland; the end faces of the dynamic sealing ring and the static sealing ring are tightly attached, and the dynamic sealing ring is tightly clamped by the semilunar snap ring and the shaft sleeve, so that the dynamic sealing ring can rotate along with the pump shaft.
The utility model provides a mechanical seal device, the wave form seal receptacle middle part is the wave form, has formed great stock solution space, when the sealed face between movable sealing ring and the quiet sealing ring takes place the trace leakage, the medium that leaks gets into the stock solution space in wave form seal receptacle middle part along the gap between quiet sealing ring and the axle sleeve, rather than gathering in the sealed face between movable sealing ring and quiet sealing ring or the gap between axle sleeve and the sealing device, avoided leading to medium crystallization or equipment corrosion on sealed face because of the gathering of medium, thereby lead to mechanical seal's damage and a large amount of leakage; when a large amount of leakage occurs in the pump, the medium preferentially enters the liquid storage space in the middle of the wave-shaped sealing seat, and the liquid storage space has a certain buffering effect on the leakage of the medium, so that the leaked medium is prevented from being directly sprayed out to cause personnel injury;
after the mechanical sealing device is installed, the wave-shaped sealing seat is in a compressed state, and the static sealing ring is pressed on the dynamic sealing ring to realize mechanical sealing; one end of the step of the wave-shaped sealing seat is tightly pressed on the end surface of the pump cover, and the other end of the step of the wave-shaped sealing seat is tightly propped in the annular groove of the gland of the wave-shaped sealing seat, so that the sealing of the step is realized; a certain gap is reserved between the pump cover and the wave-shaped sealing seat gland, along with abrasion between the movable sealing ring and the static sealing ring, the wave-shaped sealing seat is gradually restored to a normal state from a compression state, so that the sealing effect is lost, the gap between the pump cover and the wave-shaped sealing seat gland can be reduced by screwing the bolt at the moment, the compression amount of the wave-shaped sealing seat is adjusted, the wave-shaped sealing seat is compressed again to enable the wave-shaped sealing seat to be in the compression state again, the replacement period of the mechanical seal is prolonged, and the service life of the mechanical seal is prolonged.
Preferably, an O-shaped ring is arranged at the joint of the dynamic sealing ring, the shaft sleeve and the pump shaft, and the dynamic sealing ring and the shaft sleeve are fixed on the pump shaft.
Preferably, the static sealing ring is made of antimony-impregnated graphite, the dynamic sealing ring is made of silicon carbide, the wave-shaped sealing seat is made of fluororubber, and the shaft sleeve is made of graphite. The mechanical sealing device adopts materials such as antimony-impregnated graphite, fluororubber, silicon carbide and the like to effectively prevent the corrosion of the medium to the device, and the maintenance cost of the equipment is reduced.
The utility model provides a mechanical seal device, the design of wave form seal receptacle makes it have great liquid storage space, has avoided because of the accumulation of medium leads to the medium crystallization on the sealed face or to equipment corruption to lead to mechanical seal's damage and a large amount of leakage, and the splash of medium when leaking; the compression amount of the wave-shaped sealing seat is adjustable, so that the replacement period of the mechanical seal is prolonged, and the service life of the mechanical seal is prolonged; the mechanical sealing device adopts materials such as antimony-impregnated graphite, fluororubber, silicon carbide and the like to effectively prevent the corrosion of the medium to the device, thereby reducing the maintenance cost of the equipment; and the utility model discloses an do not need the spring among the mechanical seal device, prevent to damage because the medium leads to the mechanical seal to the corruption of spring.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the wave-shaped sealing seat of the present invention;
fig. 3 is a left side view of the wave-shaped sealing seat of the present invention;
fig. 4 is a schematic structural view of the static seal ring of the present invention;
fig. 5 is a schematic structural view of the gland of the wave-shaped sealing seat of the present invention.
Reference numerals: 1. a pump shaft; 2. a pump cover; 3. a shaft sleeve; 4. a movable sealing ring; 5. a half-moon snap ring; 6. a static seal ring; 7. a wave-shaped sealing seat; 8. a wave-shaped sealing seat gland; 9. a protrusion; 10 a first card slot; 11. a second card slot; 12. an annular groove; 13. a bolt; 14. and an O-shaped ring.
Detailed Description
In order to enable those skilled in the art to better understand the present invention, the following detailed description of the invention is provided in conjunction with the accompanying drawings.
A mechanical sealing device is arranged between a pump shaft 1 and a pump cover 2, a shaft sleeve 3 is fixedly sleeved on the pump shaft 1, the mechanical sealing device comprises a movable sealing ring 4 and a half-moon snap ring 5 which are fixedly sleeved on the pump shaft 1, and a static sealing ring 6, a waveform sealing seat 7 and a waveform sealing seat gland 8 which are sleeved on the shaft sleeve 3; the wave-shaped sealing seat 7 is an elastic piece, the middle part of the wave-shaped sealing seat is wave-shaped, the inner wall of one end of the wave-shaped sealing seat is provided with a plurality of bulges 9, and the outer wall of the other end of the wave-shaped sealing seat is step-shaped; a plurality of first clamping grooves 10 arranged at one end of the static sealing ring 6 are inserted with the protrusions 9 on the wave-shaped sealing seat 7; the wave-shaped sealing seat gland 8 is of a T-shaped flange structure, one end of the wave-shaped sealing seat gland 8 extends into a position between the wave-shaped sealing seat 7 and the shaft sleeve 3, and is inserted into the bulge 9 on the wave-shaped sealing seat 7 through a plurality of second clamping grooves 11 arranged at the end part of the wave-shaped sealing seat gland, and the other end of the wave-shaped sealing seat gland 8 is provided with an annular groove 12 matched with the wave-shaped sealing seat 7; the wave-shaped sealing seat gland 8 is fixedly connected with the pump cover 2 through a bolt 13, and the wave-shaped sealing seat 7 is tightly pressed between the static sealing ring 6, the wave-shaped sealing seat gland 8 and the pump cover 2; the static seal body 6, the wave-shaped seal seat 7 and the wave-shaped seal seat gland 8 are tightly matched in an inserting way to form a static seal part of the mechanical seal; the step part of the wave-shaped sealing seat 7 is tightly pressed on the end surface of the pump cover 2, and a certain gap is reserved between the pump cover 2 and the wave-shaped sealing seat gland 8; the end faces of the dynamic sealing ring 4 and the static sealing ring 6 are tightly attached, and the half-moon clamping ring 5 and the shaft sleeve 3 clamp the dynamic sealing ring 4, so that the dynamic sealing ring 4 can rotate along with the pump shaft 1 to form a dynamic sealing part of mechanical sealing.
An O-shaped ring 14 is arranged at the joint of the dynamic sealing ring 4, the shaft sleeve 3 and the pump shaft 1, and the dynamic sealing ring 4 and the shaft sleeve 3 are fixed on the pump shaft 1; the static sealing ring 6 is made of antimony-impregnated graphite, the dynamic sealing ring 4 is made of silicon carbide, the wave-shaped sealing seat 7 is made of fluororubber, and the shaft sleeve 3 is made of graphite.
After the mechanical sealing device provided by the utility model is installed, the static sealing ring 6 and the wave-shaped sealing seat 7 are fixed on the pump cover 2 through the wave-shaped sealing seat gland 8, the wave-shaped sealing seat 7 is in a compression state, and the static sealing ring 6 is pressed on the movable sealing ring 4; in a working state, the movable sealing ring 4 rotates at a high speed along with the pump shaft, the static sealing ring 6 is tightly attached to the end face of the movable sealing ring 4, and the wave-shaped sealing seat 7 is gradually restored to a normal state from a compression state along with abrasion between the static sealing ring and the movable sealing ring; when the wave form seal receptacle 7 recovers to the normal condition, then has lost the effect of compressing tightly static sealing ring 6 on moving seal ring 4 to the effect of mechanical seal has been lost, can reduce the clearance between pump cover 2 and the wave form seal receptacle gland 8 through screwing up bolt 13 this moment, the compression capacity of adjustment wave form seal receptacle 7 compresses tightly wave form seal receptacle 7 once more and makes it be in compression state once more, thereby has prolonged mechanical seal's change cycle, has increased mechanical seal's life.
The mechanical sealing device provided by the present invention is described in detail above. The principles and embodiments of the present invention have been explained herein using specific examples, which are presented only to assist in understanding the methods and concepts of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be subject to several improvements and modifications, which also fall within the scope of the claims of the present invention.
Claims (3)
1. A mechanical sealing device is arranged between a pump shaft and a pump cover, and the pump shaft is fixedly sleeved with a shaft sleeve; the middle part of the wave-shaped sealing seat is wave-shaped, the inner wall of one end of the wave-shaped sealing seat is provided with a bulge, and the outer wall of the other end of the wave-shaped sealing seat is step-shaped; a first clamping groove arranged at one end of the static sealing ring is inserted with the bulge on the wave-shaped sealing seat; the wave-shaped sealing seat gland is of a T-shaped flange structure, one end of the wave-shaped sealing seat gland extends into the space between the wave-shaped sealing seat and the shaft sleeve and is inserted into the bulge on the wave-shaped sealing seat through a second clamping groove arranged at the end part of the wave-shaped sealing seat gland, and the other end of the wave-shaped sealing seat gland is provided with an annular groove matched with the wave-shaped sealing seat; the wave-shaped sealing seat gland is fixedly connected with the pump cover through bolts, and the wave-shaped sealing seat is tightly pressed between the static sealing ring, the wave-shaped sealing seat gland and the pump cover; the step of the wave-shaped sealing seat is tightly pressed on the end surface of the pump cover, and a certain gap is reserved between the pump cover and the wave-shaped sealing seat gland; the end faces of the dynamic sealing ring and the static sealing ring are tightly attached, and the dynamic sealing ring is tightly clamped by the semilunar snap ring and the shaft sleeve, so that the dynamic sealing ring can rotate along with the pump shaft.
2. The mechanical sealing device according to claim 1, wherein an O-ring is disposed at a joint of the dynamic sealing ring, the shaft sleeve and the pump shaft to fix the dynamic sealing body and the shaft sleeve to the pump shaft.
3. The mechanical seal device according to claim 1, wherein the static seal ring is made of antimony-impregnated graphite, the dynamic seal ring is made of silicon carbide, the wave seal seat is made of fluororubber, and the shaft sleeve is made of graphite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922144952.1U CN211599079U (en) | 2019-12-04 | 2019-12-04 | Mechanical sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922144952.1U CN211599079U (en) | 2019-12-04 | 2019-12-04 | Mechanical sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211599079U true CN211599079U (en) | 2020-09-29 |
Family
ID=72590474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922144952.1U Active CN211599079U (en) | 2019-12-04 | 2019-12-04 | Mechanical sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211599079U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112197007A (en) * | 2020-10-13 | 2021-01-08 | 江门市新会区天府密封科技有限公司 | Mechanical seal for automobile water pump |
-
2019
- 2019-12-04 CN CN201922144952.1U patent/CN211599079U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112197007A (en) * | 2020-10-13 | 2021-01-08 | 江门市新会区天府密封科技有限公司 | Mechanical seal for automobile water pump |
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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 |
Assignee: Lihuayi Lijin Refining and Chemical Products Sales Co.,Ltd. Assignor: LIHUA YILIJIN REFINERY Co.,Ltd. Contract record no.: X2022980026026 Denomination of utility model: A mechanical sealing device Granted publication date: 20200929 License type: Common License Record date: 20221228 |
|
| EE01 | Entry into force of recordation of patent licensing contract |