CN213176168U - Pump sealing device for conveying easily crystallized liquid - Google Patents
Pump sealing device for conveying easily crystallized liquid Download PDFInfo
- Publication number
- CN213176168U CN213176168U CN202021972622.8U CN202021972622U CN213176168U CN 213176168 U CN213176168 U CN 213176168U CN 202021972622 U CN202021972622 U CN 202021972622U CN 213176168 U CN213176168 U CN 213176168U
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- CN
- China
- Prior art keywords
- packing
- seal ring
- water seal
- shaft sleeve
- water
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- 238000007789 sealing Methods 0.000 title claims abstract description 30
- 239000007788 liquid Substances 0.000 title claims abstract description 16
- 238000012856 packing Methods 0.000 claims abstract description 45
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000000498 cooling water Substances 0.000 claims abstract description 17
- 210000004907 gland Anatomy 0.000 claims abstract description 5
- 239000004760 aramid Substances 0.000 claims description 3
- 229920003235 aromatic polyamide Polymers 0.000 claims description 3
- 238000002425 crystallisation Methods 0.000 abstract description 11
- 230000008025 crystallization Effects 0.000 abstract description 10
- 230000008595 infiltration Effects 0.000 abstract description 2
- 238000001764 infiltration Methods 0.000 abstract description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model provides a pump sealing device for conveying easy-crystallization liquid.A first packing, a first water seal ring, a second packing, a second water seal ring and a lip-shaped oil seal are sequentially arranged between a shaft sleeve and a stuffing box and are compressed by a top ring and a gland; the lip-shaped oil seal is in sealing contact with the shaft sleeve; gaps are reserved among the first packing, the second packing and the shaft sleeve; a water flow channel is arranged between the first water seal ring and the shaft sleeve, and the second water seal ring and the shaft sleeve are provided with annular cavities; the cooling water inlet is communicated with the annular cavity of the first water seal ring, and the cooling water outlet is communicated with the annular cavity of the second water seal ring. The utility model provides a pair of a sealing device for pump for carrying easy crystallization liquid, whole sealing position has the cooling water infiltration all the time, has effectively prevented sealing position's crystallization scale deposit, and the protection is sealed not damaged, has guaranteed sealed life.
Description
Technical Field
The utility model relates to a sealing of pump, especially a sealing device for pump for carrying easy crystallization liquid for carry seal structure when the medium of easy crystallization, scale deposit is applicable to in the environment of medium crystallization, scale deposit.
Technical Field
The pump seal is an important part for ensuring that liquid in a pump cavity does not leak to the outside when the pump runs, the centrifugal pump comprises a main shaft, a bearing box, a bearing end cover, a seal, a pump shell impeller and the like, the seal mainly plays a role in preventing the leakage of the conveyed liquid, the centrifugal pump is mainly in a seal form of mechanical seal, oil seal dynamic seal and packing seal, when the mechanical seal conveys the liquid which is easy to crystallize and scale, objects which are crystallized and scale can block and seal a static ring, an O-shaped ring and other parts which need to float at any time along with the running state of the pump, and the seal is failed. When the oil seal power seal is used for conveying liquid which is easy to crystallize and scale, objects which are crystallized and scale are wrapped on the shaft sleeve and the oil seal lip, and the oil seal lip is directly damaged to cause sealing failure. When the situation is met, a user does not have other seals to choose from, and only can frequently dismantle, repair and replace the seals.
SUMMERY OF THE UTILITY MODEL
To the deficiency of the prior art, the utility model aims to provide a sealing device for pump for carrying easy crystallization liquid makes sealed operation that can be reliable for a long time in the medium environment of easy crystallization scale deposit.
The specific technical scheme is as follows:
a pump sealing device for conveying easily crystallized liquid is characterized in that a first packing, a first water seal ring, a second packing, a second water seal ring and a lip-shaped oil seal are sequentially arranged between a shaft sleeve and a stuffing box and are compressed by a top ring and a gland;
the lip-shaped oil seal is in sealing contact with the shaft sleeve;
gaps are reserved among the first packing, the second packing and the shaft sleeve;
a water flow channel is arranged between the first water seal ring and the shaft sleeve, and the second water seal ring and the shaft sleeve are provided with annular cavities;
the cooling water inlet is communicated with the annular cavity of the first water seal ring, and the cooling water outlet is communicated with the annular cavity of the second water seal ring.
Furthermore, a first packing which is in contact with a conveying medium is arranged in the stuffing box, and the aramid packing which is good in wear resistance, corrosion resistance and sealing effect and self-lubricating is mainly selected and used as a first packing material, so that the service life of sealing is ensured.
The utility model provides a pair of a sealing device for pump for carrying easy crystallization liquid, whole sealing position has the cooling water infiltration all the time, has effectively prevented sealing position's crystallization scale deposit, and the protection is sealed not damaged, has guaranteed sealed life.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic sectional structure of the present invention;
fig. 2 is a schematic view of the cross-sectional structure of the larger model of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
As shown in figure 1, a pump sealing device for conveying easily crystallized liquid is characterized in that a first packing 4, a first water seal ring 5, a second packing 7, a second water seal ring 8 and a lip-shaped oil seal 9 are sequentially arranged between a shaft sleeve 2 and a stuffing box 12 and are pressed tightly through a top ring and a gland 10;
the lip-shaped oil seal 9 is in sealing contact with the shaft sleeve 2;
gaps are reserved between the first packing 4, the second packing 7 and the shaft sleeve 2;
a water flow channel is arranged between the first water seal ring 5 and the shaft sleeve 2, and the second water seal ring 8 and the shaft sleeve 8 are respectively provided with an annular cavity;
the cooling water inlet 11 is communicated with the annular cavity of the first water seal ring 5, and the cooling water outlet 6 is communicated with the annular cavity of the second water seal ring 8.
The packing box 12 is internally provided with a first packing 4 which is in contact with a conveying medium, the first packing 4 is mainly made of aramid packing with good wear resistance, corrosion resistance and sealing effect and good self-lubrication, the service life of sealing is ensured, the first water seal ring 5 is installed behind the first packing 4, the rear side of the first water seal ring 5 is provided with a second packing 7, the second packing 7 is made of tetrafluoro packing, the rear side of the second water seal ring 8 is provided with a second water seal ring 8, the rear side of the second water seal ring 8 is provided with a lip-shaped oil seal 9, the first packing 4, the first water seal ring 5, the second packing 7 and the second water seal ring 8 are tightly pressed through a top ring and a gland 10, the first packing 4, the first water seal ring 5 and the second packing 7 form an almost closed space, cooling water with the pressure of 1-3 kg/cm is injected through a cooling water inlet 11, and a pump main shaft 14 drives the shaft sleeve 2 to lubricate and cool the first packing 4 when the shaft sleeve 2 runs at high speed, The second packing 7, along with the operation of pump main shaft 14 the cooling water between first packing 4, the second packing 7 can leak to two directions of first packing 4, second packing 7 trace, and the direction toward first packing 4 is exactly get into the pump chamber, and the cooling water toward the direction of second packing 7 is blocked by the lip oil blanket 9 at back, and a small amount of cooling water passes through cooling water outlet 6 and discharges. After the measures are adopted, the whole sealing part is always soaked by cooling water, the crystallization and scaling of the sealing part are effectively prevented, the sealing is protected from being damaged, and the service life of the sealing is ensured.
Fig. 2 is a small stuffing box 13 separated from the mounting position of the first packing 4 for convenient assembly in order to adapt to a model with a larger specification, and the structural working principle of the small stuffing box is the same as that of fig. 1.
It is to be understood that the above-described embodiments are merely illustrative of some, but not restrictive, of the broad invention, and that the appended drawings illustrate preferred embodiments of the invention and do not limit the scope of the invention. This application is capable of embodiments in many different forms and is provided for the purpose of enabling a thorough understanding of the disclosure of the application. Although the present application has been described in detail with reference to the foregoing embodiments, it will be apparent to one skilled in the art that the present application may be practiced without modification or with equivalents of some of the features described in the foregoing embodiments. All equivalent structures made by using the contents of the specification and the drawings of the present application are directly or indirectly applied to other related technical fields and are within the protection scope of the present application.
Claims (3)
1. A pump sealing device for conveying easily crystallized liquid is characterized in that a first packing (4), a first water seal ring (5), a second packing (7), a second water seal ring (8) and a lip-shaped oil seal (9) are sequentially arranged between a shaft sleeve (2) and a stuffing box (12) and are compressed by a top ring and a gland (10);
the lip-shaped oil seal (9) is in sealing contact with the shaft sleeve (2);
gaps are reserved between the first packing (4), the second packing (7) and the shaft sleeve (2);
a water flow channel is arranged between the first water seal ring (5), the second water seal ring (8) and the shaft sleeve (2), and the first water seal ring (5) and the second water seal ring (8) are both provided with annular cavities;
the cooling water inlet (11) is communicated with the annular cavity of the first water seal ring (5), and the cooling water outlet (6) is communicated with the annular cavity of the second water seal ring (8).
2. The sealing device for the pump used for conveying the liquid easy to crystallize in the claim 1 is characterized in that the first packing (4) is aramid packing.
3. The sealing device for the pump for conveying the liquid easy to crystallize according to claim 1 or 2, characterized in that the second packing (7) is a tetrafluoro packing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021972622.8U CN213176168U (en) | 2020-09-10 | 2020-09-10 | Pump sealing device for conveying easily crystallized liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021972622.8U CN213176168U (en) | 2020-09-10 | 2020-09-10 | Pump sealing device for conveying easily crystallized liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213176168U true CN213176168U (en) | 2021-05-11 |
Family
ID=75773927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021972622.8U Active CN213176168U (en) | 2020-09-10 | 2020-09-10 | Pump sealing device for conveying easily crystallized liquid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213176168U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115750434A (en) * | 2022-11-30 | 2023-03-07 | 山东省章丘鼓风机股份有限公司 | Abrasion protection device falls in backplate behind sediment stuff pump |
-
2020
- 2020-09-10 CN CN202021972622.8U patent/CN213176168U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115750434A (en) * | 2022-11-30 | 2023-03-07 | 山东省章丘鼓风机股份有限公司 | Abrasion protection device falls in backplate behind sediment stuff pump |
| CN115750434B (en) * | 2022-11-30 | 2025-10-31 | 山东省章丘鼓风机股份有限公司 | Wear protection device is fallen to sediment stuff pump backplate |
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