CN211573856U - Two-way self-loopa carborundum mechanical seal device - Google Patents
Two-way self-loopa carborundum mechanical seal device Download PDFInfo
- Publication number
- CN211573856U CN211573856U CN201922388162.8U CN201922388162U CN211573856U CN 211573856 U CN211573856 U CN 211573856U CN 201922388162 U CN201922388162 U CN 201922388162U CN 211573856 U CN211573856 U CN 211573856U
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- Prior art keywords
- ring
- gland
- wall
- stationary ring
- driving
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Links
- 229910010271 silicon carbide Inorganic materials 0.000 title claims abstract description 20
- 210000004907 gland Anatomy 0.000 claims abstract description 64
- 238000007789 sealing Methods 0.000 claims abstract description 61
- 238000001816 cooling Methods 0.000 claims abstract description 25
- 239000007788 liquid Substances 0.000 claims abstract description 24
- 238000011010 flushing procedure Methods 0.000 claims abstract description 20
- 230000003068 static effect Effects 0.000 claims description 20
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 12
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 230000002457 bidirectional effect Effects 0.000 description 6
- 238000009434 installation Methods 0.000 description 3
- 239000012809 cooling fluid Substances 0.000 description 2
- 239000000110 cooling liquid Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a two-way self-loopa carborundum mechanical seal device, include axle sleeve (2) of being connected with pump shaft (1), with pump body coupling's gland (3), be equipped with two sets of sealing mechanism on axle sleeve (2): the sealing device comprises a first sealing mechanism and a second sealing mechanism, wherein a liquid inlet (3.3) and a liquid outlet (3.4) are formed in a gland (3), the liquid inlet (3.3) and the liquid outlet (3.4) are communicated with a flushing cooling cavity, and the inner ends of a first spring (8), a second spring (12) and a driving ring (7) are positioned in the flushing cooling cavity; this mechanical seal is under equal design space, and the design of series connection combination formula sealing ring strengthens the perturbance nature to improve anti beat performance, consequently can reduce the cracked probability of sealing ring, increase pump efficiency ring structure on the drive ring, thereby can increase the cooling effect, and pump efficiency ring design counter shaft does not have the requirement of turning to can both.
Description
The technical field is as follows:
the utility model relates to a mechanical seal technical field specifically is a two-way self-loopa carborundum mechanical seal device.
Background art:
at present, a bidirectional self-circulation silicon carbide mechanical sealing device adopts a double-sealing surface structure, namely two groups of sealing surfaces are arranged and are respectively arranged at two ends of a gland, one group of sealing surfaces is positioned in a pump cavity, and the other group of sealing surfaces is positioned outside the pump body. Because the two groups of static ring seats are directly fixed in the holes of the gland, the axial installation space is saved, but in the actual operation process, the static ring or the static ring seat is directly cracked due to no swing clearance and buffering in the deflection process of the pump shaft due to the installation mode of the two groups of sealing structures. In addition, a cooling fluid inlet and outlet channel is generally added on the gland to cool the internal parts, but the cooling fluid only depends on the pressure of the inlet to flush, and the flushing and convection effects are exerted on the two ends with longer axial distance, so that the cooling effect is reduced.
The utility model has the following contents:
the to-be-solved technical problem of the utility model is to provide a under equal design space, series connection combination formula sealing ring design, thereby reinforcing disturbance nature, improvement anti beat performance, consequently can reduce the cracked probability of sealing ring, increase pump efficiency ring structure on the drive ring to can increase the cooling effect, and pump efficiency ring design counter shaft does not have the two-way self-loopa carborundum mechanical seal device that can both be required to revolve to.
In order to solve the technical problem, the utility model discloses a following technical scheme's two-way self-loopa carborundum mechanical seal device, include the axle sleeve of being connected with the pump shaft, with pump body connection's gland, the axle sleeve is fixed outside the pump shaft and is run through the hole at the gland, be equipped with two sets of sealing mechanism on the axle sleeve: the first sealing mechanism is positioned at the outer side of the gland, and the second sealing mechanism is positioned in the pump cavity at the inner side of the gland; the method is characterized in that: the first sealing mechanism comprises a first movable ring, a first static ring seat, a driving ring and a plurality of first springs; the driving ring is sleeved at the outer end of the shaft sleeve and is limited in the circumferential direction of the shaft sleeve, and the outer wall of the shaft sleeve is sealed with the inner wall of the driving ring; the first movable ring and the first static ring are sleeved outside the driving ring, the first movable ring and the driving ring are limited in the circumferential direction, and the outer side wall of the first movable ring is sealed with the outer side surface of the driving ring; the first stationary ring is fixed on a first stationary ring seat, the first stationary ring seat is limited on the gland in the circumferential direction, and the first stationary ring seat and the gland are connected in an axial sliding manner; the inner end of each first spring is embedded into a first positioning hole at the outer end of the gland, the other end of each first spring abuts against the first stationary ring seat, and one end face of each first stationary ring is tightly attached to one end face of the first movable ring through the first spring to form a first sealing surface; the second sealing mechanism comprises a second movable ring, a second static ring seat and a plurality of second springs; the second movable ring, the second static ring and the second static ring seat are all sleeved outside the shaft sleeve, the second static ring seat is limited on the gland in the circumferential direction and slides in the axial direction, and the second movable ring is fixed at the inner end of the shaft sleeve; one end of each second spring is embedded into a second positioning hole at the inner end of the gland, the other end of each second spring is abutted against one end of a second stationary ring seat, and one end face of each second stationary ring is tightly attached to one end face of the second movable ring through the second spring to form a second sealing surface; intervals are arranged between the inner wall of the second movable ring, the inner wall of the second stationary ring and the inner wall of the second stationary ring seat and the outer wall of the shaft sleeve, the inner wall of the gland, the first sealing surface, the second sealing surface and the shaft sleeve form a closed flushing and cooling cavity, a liquid inlet and a liquid outlet are arranged on the gland and are communicated with the flushing and cooling cavity, and the inner ends of the first spring, the second spring and the driving ring are positioned in the flushing and cooling cavity; the end face of one end, close to the gland, of the driving ring is provided with a plurality of notches which are uniformly distributed along the circumference, and blades are formed between every two adjacent notches.
Each blade is perpendicular to the end face of the drive ring.
The gap is in a shape of an inverted trapezoid with a small outer part and a large inner part.
An annular sleeve is arranged on the first step surface of the inner hole of the gland and is positioned in the flushing and cooling cavity, and the annular sleeve is sleeved on the outer side of the gap.
The annular sleeve is positioned between the inner end of the driving ring and the first stationary ring seat, the outer end of the annular sleeve is close to the bottom of the notch, and a liquid passage is arranged between the bottoms of all the notches and the end part of the free end of the annular sleeve; and a space is arranged between the inner wall of the annular sleeve and the outer wall of the driving ring, and a space is arranged between the outer wall of the annular sleeve and the inner wall of the first stationary ring seat.
The second stationary ring seat is circumferentially limited on the gland and axially slides, a plurality of driving devices distributed axially are arranged at one end of the second stationary ring seat, a second step surface is arranged in the through hole of the gland, bolt holes corresponding to the driving devices in number and position are arranged on the second step surface, and each driving device is axially movably embedded in each bolt hole.
The outer wall of the shaft sleeve is provided with axially distributed guide grooves along a circle of circumference, and all the guide grooves are positioned in the washing and cooling cavity.
The inner end of the second stationary ring seat is provided with a first annular step, the outer wall of the second stationary ring seat is provided with a second annular step, the first annular step is provided with a first sealing ring and is sealed with the outer wall of the second stationary ring, and the second annular step is provided with a second sealing ring and is sealed with the inner wall of the gland.
After the structure more than adopting, compared with the prior art, the utility model, have following advantage and beneficial effect:
1. after the first stationary ring is connected with the first stationary ring seat, the first stationary ring seat is connected with the gland, and after the second stationary ring is connected with the second stationary ring seat, the second stationary ring seat is connected with the gland, so that the axial length of the two groups of sealing structures after being installed is increased, and the probability of cracking the stationary ring seat can be reduced in the process of pump shaft deflection.
2. Because the end face of one end of the driving ring, which is close to the gland, is provided with a plurality of notches which are uniformly distributed along the circumference, and blades are formed between every two adjacent notches, so that liquid in the cooling cavity is stirred through the blades regardless of the positive rotation or the reverse rotation of the pump shaft, and the new cooling liquid can enter the cooling cavity regardless of the distance or the close position, and the cooling effect can be increased. And each blade is vertical to the end surface of the driving ring, so that the cooling liquid can be stirred when the pump shaft rotates forwards and backwards. That is, the structure of the pump efficiency ring is added on the driving ring, thereby increasing the cooling effect, and the design of the pump efficiency ring can realize bidirectional self circulation without the requirement of rotating direction of the shaft.
3. Through the quiet ring of second of quiet ring seat one end installation second, the other end passes through sealing washer and gland direct contact to avoid the quiet ring of second direct and gland hard link, and the quiet ring seat of second generally adopts metal material to make, and the quiet ring of second is by silicon carbide ceramic material, very easily is extrudeed and cracked, through this structure, the quiet ring of protection second that can be better.
4. Two sealing rings at the two ends of the second stationary ring seat, namely, the first sealing ring is arranged on the first annular step and sealed with the outer wall of the second stationary ring, the second sealing ring is arranged on the second annular step and sealed with the inner wall of the gland, and when the second stationary ring seat is sealed, the second stationary ring seat has the buffer effect in the front and back directions, so that the anti-deflection effect is better.
Drawings
Fig. 1 is a schematic view of a cross-sectional assembly of a bidirectional self-circulating silicon carbide mechanical sealing device according to the present invention.
Fig. 2 is a right side schematic view of the drive ring of the present invention.
Fig. 3 is a schematic cross-sectional view of the drive ring of the present invention.
Fig. 4 is a schematic view of the notch of the present invention.
Fig. 5 is a right-side schematic view of the second stationary ring seat of the present invention.
Fig. 6 is a schematic cross-sectional view of a second stationary ring seat according to the present invention.
Fig. 7 is a right schematic view of the gland of the present invention.
Fig. 8 is a schematic sectional view of the sleeve according to the present invention.
As shown in the figure:
1. a pump shaft is arranged on the pump body,
2. a shaft sleeve 2.1, a diversion trench,
3. a gland 3.1, a first positioning hole 3.2, a second positioning hole 3.3, a liquid inlet 3.4, a liquid outlet 3.5, an annular sleeve 3.6 and a bolt hole,
4. a first movable ring 5, a first stationary ring 6, a first stationary ring seat,
7. drive ring, 7.1, gap, 7.2, blade,
8. a first spring 9, a second movable ring 10, a second stationary ring,
11. a second stationary ring seat 11.1, a driving device 11.2, a first annular step 11.3, a second annular step,
12. second spring, 13, first sealing washer, 14, second sealing washer.
The specific implementation mode is as follows:
the present invention will be described in further detail with reference to specific examples, but the present invention is not limited to the following examples.
The inner end of the embodiment refers to the pump chamber facing the inside of the gland 3, and the outer end refers to the outside of the gland 3.
As shown in fig. 1-8, the utility model discloses a two-way self-loopa carborundum mechanical seal device, include the axle sleeve 2 of being connected with pump shaft 1, with pump body connection's gland 3, axle sleeve 2 fixes outside pump shaft 1 and runs through the hole at gland 3, be equipped with two sets of sealing mechanism on the axle sleeve 2: the first sealing mechanism is positioned on the outer side of the gland 3, and the second sealing mechanism is positioned in the pump cavity on the inner side of the gland 3;
the first sealing mechanism of the bidirectional self-circulation silicon carbide mechanical sealing device comprises a first movable ring 4, a first static ring 5, a first static ring seat 6, a driving ring 7 and a plurality of first springs 8; the driving ring 7 is sleeved at the outer end of the shaft sleeve 2 and is limited in the circumferential direction of the shaft sleeve 2, the shaft sleeve 2 rotates and drives the driving ring 7 to rotate together, the outer wall of the shaft sleeve 2 is sealed with the inner wall of the driving ring 7, and an O-shaped sealing ring is arranged between the outer wall of the shaft sleeve 2 and the inner wall of the driving ring 7.
The first movable ring 4 and the first stationary ring 5 are sleeved outside the driving ring 7, the first movable ring 4 and the driving ring 7 are circumferentially limited, the driving ring 7 rotates to drive the first movable ring 4 to rotate, the outer side wall of the first movable ring 4 is sealed with the outer side surface of the driving ring 7, and an O-shaped sealing ring is arranged between the first movable ring 4 and the outer side surface of the driving ring 7.
The first stationary ring 5 is fixed on the first stationary ring seat 6, the first stationary ring seat 6 is limited on the gland 3 in the circumferential direction, and the first stationary ring seat and the gland are connected in an axial sliding manner; the structure is as follows: one end of the second stationary ring seat 11 is provided with a plurality of driving devices 11.1 distributed along the axial direction, a second step surface is arranged in the through hole of the gland 3, the second step surface is provided with plug pin holes 3.6 corresponding to the driving devices 11.1 in number and position, and each driving device 11.1 is axially and movably embedded in the plug pin hole 3.6.
The inner end of each first spring 8 is embedded into a corresponding first positioning hole 3.1 at the outer end of the gland 3, the other end of each first spring abuts against the first stationary ring seat 6, and one end face of the first stationary ring 5 is tightly attached to one end face of the first movable ring 4 through the first spring 8 to form a first sealing surface;
the second sealing mechanism of the bidirectional self-circulation silicon carbide mechanical sealing device comprises a second movable ring 9, a second static ring 10, a second static ring seat 11 and a plurality of second springs 12; second rotating ring 9, second quiet ring 10, second quiet ring seat 11 all overlap outside axle sleeve 2, second quiet ring seat 11 circumference is spacing on gland 3 and both axial slip, and second quiet ring seat 11 does not rotate with gland 3 circumference, but second quiet ring seat 11 can the axial stretch out and draw back in the hole of gland 3.
The second movable ring 9 is fixed at the inner end of the shaft sleeve 2; the shaft sleeve 2 rotates to drive the second rotating ring 9 to rotate.
One end of each second spring 12 is embedded in a corresponding second positioning hole 3.2 at the inner end of the gland 3, the other end of each second spring abuts against one end of the second stationary ring seat 11, and one end face of the second stationary ring 10 is tightly attached to one end face of the second movable ring 9 through the second spring 12 to form a second sealing surface;
spaces are arranged between the inner wall of the second movable ring 9, the inner wall of the second stationary ring 10 and the inner wall of the second stationary ring seat 11 and the outer wall of the shaft sleeve 2, the inner wall of the gland 3, the first sealing surface, the second sealing surface and the shaft sleeve 2 form a closed flushing cooling cavity, a liquid inlet 3.3 and a liquid outlet 3.4 are arranged on the gland 3, the liquid inlet 3.3 and the liquid outlet 3.4 are communicated with the flushing cooling cavity, and the inner ends of the first spring 8, the second spring 12 and the driving ring 7 are positioned in the flushing cooling cavity; the end face of one end of the driving ring 7 close to the gland 3 is provided with a plurality of notches 7.1 which are uniformly distributed along the circumference, and a blade 7.2 is formed between two adjacent notches 7.1. The drive ring 7, when rotating, causes the blades 7.2 to agitate the flushing liquid, thereby causing the flushing liquid to circulate in the flushing cooling cavity.
As shown in fig. 2-4, each blade 7.2 is perpendicular to the end face of the drive ring 7. The notch 7.1 is in the shape of an inverted trapezoid with a small outer part and a large inner part. No matter the pump shaft 1 rotates forwards or backwards, the vertically arranged blades 7.2 can play a role in stirring flushing liquid, namely, the bidirectional rotation can achieve a stirring effect.
As shown in fig. 1, an annular sleeve 3.5 is arranged on a first step surface of an inner hole of the gland 3, the annular sleeve 3.5 is located in the flushing cooling cavity, the annular sleeve 3.5 is arranged outside a notch 7.1, the annular sleeve 3.5 is located between the inner end of the driving ring 7 and the first stationary ring seat 6, the outer end of the annular sleeve 3.5 is close to the bottom of the notch 7.1, and a liquid passage is arranged between the bottoms of all the notches 7.1 and the end of the free end of the annular sleeve 3.5; and a space is arranged between the inner wall of the annular sleeve 3.5 and the outer wall of the driving ring 7, and a space is arranged between the outer wall of the annular sleeve 3.5 and the inner wall of the first static ring seat 6. So that when the driving ring 7 rotates, a vortex is generated between the notch 7.1 and the annular sleeve 3.5, thereby increasing the effect of the flushing liquid circulation.
As shown in fig. 1 and 6, axially distributed guide grooves 2.1 are circumferentially arranged on the outer wall of the shaft sleeve 2, and all the guide grooves 2.1 are located in the flushing and cooling cavity. The inner of second stationary ring seat 11 is equipped with first annular step 11.2, the outer wall is equipped with second annular step 11.3, be equipped with first sealing washer 13 on first annular step 11.2 and sealed with the outer wall of second stationary ring 10, be equipped with second sealing washer 14 on second annular step 11.3 and sealed with the inner wall of gland 3, first sealing washer 13 and second sealing washer 14 are when sealed, still the stationary ring seat 11 of second possesses the cushioning effect of two directions in front and back, and anti beat effect is better.
Claims (8)
1. The utility model provides a two-way self-loopa carborundum mechanical seal device, includes axle sleeve (2) of being connected with pump shaft (1), gland (3) of being connected with the pump body, axle sleeve (2) are fixed outside pump shaft (1) and are run through the hole at gland (3), be equipped with two sets of sealing mechanism on axle sleeve (2): the first sealing mechanism is positioned on the outer side of the gland (3), and the second sealing mechanism is positioned in a pump cavity on the inner side of the gland (3); the method is characterized in that:
the first sealing mechanism comprises a first movable ring (4), a first static ring (5), a first static ring seat (6), a driving ring (7) and a plurality of first springs (8); the driving ring (7) is sleeved at the outer end of the shaft sleeve (2) and is limited in the circumferential direction, and the outer wall of the shaft sleeve (2) is sealed with the inner wall of the driving ring (7); the first movable ring (4) and the first stationary ring (5) are sleeved outside the driving ring (7), the first movable ring (4) and the driving ring (7) are limited in the circumferential direction, and the outer side wall of the first movable ring (4) is sealed with the outer side surface of the driving ring (7); the first stationary ring (5) is fixed on the first stationary ring seat (6), the first stationary ring seat (6) is limited on the gland (3) in the circumferential direction, and the first stationary ring seat and the gland are connected in an axial sliding manner; the inner end of each first spring (8) is embedded into a first positioning hole (3.1) at the outer end of the gland (3), the other end of each first spring abuts against a first static ring seat (6), and the end face of one end of the first static ring (5) is tightly attached to the end face of one end of the first movable ring (4) through the first spring (8) to form a first sealing surface;
the second sealing mechanism comprises a second movable ring (9), a second static ring (10), a second static ring seat (11) and a plurality of second springs (12); the second movable ring (9), the second stationary ring (10) and the second stationary ring seat (11) are all sleeved outside the shaft sleeve (2), the second stationary ring seat (11) is limited on the gland (3) in the circumferential direction and slides in the axial direction, and the second movable ring (9) is fixed at the inner end of the shaft sleeve (2); one end of each second spring (12) is embedded into a second positioning hole (3.2) at the inner end of the gland (3), the other end of each second spring abuts against one end of a second stationary ring seat (11), and one end face of each second stationary ring (10) is tightly attached to one end face of the second movable ring (9) through the second spring (12) to form a second sealing surface;
intervals are arranged between the inner wall of the second movable ring (9), the inner wall of the second stationary ring (10), the inner wall of the second stationary ring seat (11) and the outer wall of the shaft sleeve (2), the inner wall of the gland (3), the first sealing surface, the second sealing surface and the shaft sleeve (2) form a closed flushing cooling cavity, a liquid inlet (3.3) and a liquid outlet (3.4) are arranged on the gland (3), the liquid inlet (3.3) and the liquid outlet (3.4) are communicated with the flushing cooling cavity, and the inner ends of the first spring (8), the second spring (12) and the driving ring (7) are all positioned in the flushing cooling cavity; the end face of one end, close to the gland (3), of the driving ring (7) is provided with a plurality of notches (7.1) which are uniformly distributed along the circumference, and blades (7.2) are formed between every two adjacent notches (7.1).
2. A bi-directional self-circulating silicon carbide mechanical seal according to claim 1, wherein: each blade (7.2) is perpendicular to the end surface of the driving ring (7).
3. A bi-directional self-circulating silicon carbide mechanical seal according to claim 1 or 2, wherein: the notch (7.1) is in a shape of an inverted trapezoid with a small outer part and a large inner part.
4. A bi-directional self-circulating silicon carbide mechanical seal according to claim 1 or 2, wherein: be equipped with annular sleeve (3.5) on the first step face of the hole of gland (3), annular sleeve (3.5) are located the washing and cooling cavity, annular sleeve (3.5) are established in breach (7.1) outside.
5. The bi-directional self-circulating silicon carbide mechanical seal device of claim 4, wherein: the annular sleeve (3.5) is positioned between the inner end of the driving ring (7) and the first stationary ring seat (6), the outer end of the annular sleeve (3.5) is close to the bottom of the notch (7.1), and a liquid passage is arranged between the bottoms of all the notches (7.1) and the end part of the free end of the annular sleeve (3.5); and a space is arranged between the inner wall of the annular sleeve (3.5) and the outer wall of the driving ring (7), and a space is arranged between the outer wall of the annular sleeve (3.5) and the inner wall of the first stationary ring seat (6).
6. A bi-directional self-circulating silicon carbide mechanical seal according to claim 1, wherein: the second stationary ring seat (11) is circumferentially limited on the gland (3) and axially slides, a plurality of driving devices (11.1) distributed axially are arranged at one end of the second stationary ring seat (11), a second step surface is arranged in a through hole of the gland (3), bolt holes (3.6) corresponding to the driving devices (11.1) in number and position are formed in the second step surface, and each driving device (11.1) is axially movably embedded into the bolt hole (3.6).
7. A bi-directional self-circulating silicon carbide mechanical seal according to claim 1, wherein: the outer wall of the shaft sleeve (2) is provided with axially distributed guide grooves (2.1) along a circle of circumference, and all the guide grooves (2.1) are positioned in the washing and cooling cavity.
8. A bi-directional self-circulating silicon carbide mechanical seal according to claim 1, wherein: the inner end of the second stationary ring seat (11) is provided with a first annular step (11.2), the outer wall of the second stationary ring seat is provided with a second annular step (11.3), the first annular step (11.2) is provided with a first sealing ring (13) and is sealed with the outer wall of the second stationary ring (10), and the second annular step (11.3) is provided with a second sealing ring (14) and is sealed with the inner wall of the gland (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922388162.8U CN211573856U (en) | 2019-12-26 | 2019-12-26 | Two-way self-loopa carborundum mechanical seal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922388162.8U CN211573856U (en) | 2019-12-26 | 2019-12-26 | Two-way self-loopa carborundum mechanical seal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211573856U true CN211573856U (en) | 2020-09-25 |
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ID=72551410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922388162.8U Withdrawn - After Issue CN211573856U (en) | 2019-12-26 | 2019-12-26 | Two-way self-loopa carborundum mechanical seal device |
Country Status (1)
| Country | Link |
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| CN (1) | CN211573856U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111120391A (en) * | 2019-12-26 | 2020-05-08 | 宁波伏尔肯科技股份有限公司 | Two-way self-loopa carborundum mechanical seal device |
| CN115929909A (en) * | 2022-09-26 | 2023-04-07 | 宁波天工机械密封有限公司 | Mechanical seal for high-temperature oil pump |
-
2019
- 2019-12-26 CN CN201922388162.8U patent/CN211573856U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111120391A (en) * | 2019-12-26 | 2020-05-08 | 宁波伏尔肯科技股份有限公司 | Two-way self-loopa carborundum mechanical seal device |
| CN111120391B (en) * | 2019-12-26 | 2024-09-06 | 宁波伏尔肯科技股份有限公司 | A bidirectional self-circulating silicon carbide mechanical sealing device |
| CN115929909A (en) * | 2022-09-26 | 2023-04-07 | 宁波天工机械密封有限公司 | Mechanical seal for high-temperature oil pump |
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Granted publication date: 20200925 Effective date of abandoning: 20240906 |