CN203532310U - Seal cartridge assembly at driving end of centrifugal pump and centrifugal pump - Google Patents
Seal cartridge assembly at driving end of centrifugal pump and centrifugal pump Download PDFInfo
- Publication number
- CN203532310U CN203532310U CN201320524067.6U CN201320524067U CN203532310U CN 203532310 U CN203532310 U CN 203532310U CN 201320524067 U CN201320524067 U CN 201320524067U CN 203532310 U CN203532310 U CN 203532310U
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- Prior art keywords
- centrifugal pump
- sleeve
- axle sleeve
- groove
- cartridge assembly
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Abstract
The utility model discloses a seal cartridge assembly at the driving end of a centrifugal pump and the centrifugal pump. The seal cartridge assembly comprises a shaft sleeve and a throttling sleeve. The shaft sleeve is connected to the end of a pump shaft of the centrifugal pump in a sleeved mode, the throttling sleeve is connected to the outer wall of the shaft sleeve in a sleeved mode, and a fit clearance is formed between the throttling sleeve and the outer wall face of the shaft sleeve. The outer wall face of the shaft sleeve is provided with a plurality of grooves or the inner wall face of the throttling sleeve is provided with a plurality of grooves. According to the seal cartridge assembly at the driving end of the centrifugal pump and the centrifugal pump, the grooves are formed in the outer wall of the shaft sleeve so that suspended particles in liquid mediums can sink into the bottoms of the grooves when entering the gaps between the shaft sleeve and the throttling sleeve, therefore, interference between the shaft sleeve and the throttling sleeve is avoided, abrasion is reduced, locking is preventing from occurring between the shaft sleeve and the throttling sleeve and the sealing effect is improved.
Description
Technical field
The utility model relates to centrifugal pump structure technology, relates in particular to a kind of seal cartridge assembly and centrifugal pump of centrifugal pump drive end.
Background technique
Centrifugal pump is one of equipment conventional in coal mining and Chemical Manufacture, comprises the assemblies such as pump shaft and impeller blade, thereby pump shaft High Rotation Speed impeller blade rotary drives water to rotate, and water is thrown away, and reaches the object of carrying water.
Drive end at centrifugal pump is provided with stuffing box gland conventionally, as shown in Figure 1, sealing cover comprise axle sleeve 1 ' and orifice sleeve 2 '.Axle sleeve 1 ' be socketed on pump shaft, and there is matching gap between pump shaft.When driven by motor pump shaft runs up, axle sleeve 1 ' rotate with pump shaft.Due to axle sleeve 1 ' be socketed in the end of pump shaft, can play certain seal action to the medium of centrifugal pump inside, Fig. 1 Intermediate shaft sleeve 1 ' right side be the inner (not shown) of centrifugal pump.
Orifice sleeve 2 ' be fixedly mounted on the pump case of centrifugal pump maintains static together with pump case.Orifice sleeve 2 ' be enclosed within axle sleeve 1 ' outer wall, and with axle sleeve 1 ' be Spielpassung, orifice sleeve 2 ' also can play certain seal action to the medium of centrifugal pump inside.
Centrifugal pump of the prior art, its main medium is the buck with solid slag thing, after long-time use, suspended particulate can be mixed in axle sleeve 1 ' and orifice sleeve 2 ' between gap in, cause axle sleeve 1 ' and orifice sleeve 2 ' locking, affect the normal work of centrifugal pump.Meanwhile, owing to there is suspended particulate in buck, can cause wearing and tearing to centrifugal pump inner member, thereby impact seals, and causes internal leakage or the external leakage of centrifugal pump.(so-called internal leakage refers to that after the wearing and tearing of inner sealing ring, pump efficiency reduces.External leakage refers to that shaft seal pressurized is excessive, and mechanical seal is ineffective)
Model utility content
The utility model provides a kind of seal cartridge assembly and centrifugal pump of centrifugal pump drive end, to solve defect of the prior art, improves the sealing effect of centrifugal pump.
The utility model provides a kind of seal cartridge assembly of centrifugal pump drive end, comprise axle sleeve and orifice sleeve, described axle sleeve is socketed in the pump shaft end of centrifugal pump, described orifice sleeve is socketed on the outer wall of described axle sleeve, between described orifice sleeve and the outer wall of described axle sleeve, there is matching gap, wherein: the outer wall of described axle sleeve has a plurality of grooves; Or the internal face of described orifice sleeve is provided with a plurality of grooves.
The seal cartridge assembly of centrifugal pump drive end as above, wherein, preferably: described groove is backpitch shape groove, is arranged in the outer wall of described axle sleeve, and described groove is formed by multiple thread or single screw thread.
The seal cartridge assembly of centrifugal pump drive end as above, wherein, preferably: described groove is T-shaped groove, trigonometric form groove or dovetail groove are arranged in the outer wall of described axle sleeve.
The seal cartridge assembly of centrifugal pump drive end as above, wherein, preferably: described groove is dovetail groove, and the axial cross section of described groove forms a plurality of tooth-like parts, the tooth depth of described tooth-like part is 1.2mm, tooth root is wide is 1.4mm.
The seal cartridge assembly of centrifugal pump drive end as above, wherein, preferably: the matching gap between described orifice sleeve and described axle sleeve is 0.2-0.5mm.
The seal cartridge assembly of centrifugal pump drive end as above, wherein, preferably: the matching gap between described orifice sleeve and described axle sleeve is 0.3mm.
The seal cartridge assembly of centrifugal pump drive end as above, wherein, preferably: described groove is chromium plating groove.
The utility model also provides a kind of centrifugal pump, comprise drive end, described drive end comprises pump shaft, it is characterized in that, described centrifugal pump comprises the seal cartridge assembly that is arranged on the centrifugal pump drive end that the utility model of described drive end provides, and described axle sleeve is socketed on described pump shaft.
Seal cartridge assembly and the centrifugal pump of the centrifugal pump drive end that the utility model provides arrange groove by the outer wall at axle sleeve, make suspended particulate in liquid medium when the gap entering between axle sleeve and orifice sleeve, can sink to bottom portion of groove, thereby avoided the interference between axle sleeve and orifice sleeve, wearing and tearing have been reduced, prevented from, between axle sleeve and orifice sleeve, locking occurs, improved sealing effect.
Accompanying drawing explanation
Fig. 1 is the seal cartridge assembly structural representation of centrifugal pump drive end in prior art;
The seal cartridge assembly structural representation of the centrifugal pump drive end that Fig. 2 provides for the utility model embodiment.
Embodiment
Below in conjunction with embodiment, the utility model is elaborated.
The seal cartridge assembly structural representation of the centrifugal pump drive end that Fig. 2 provides for the utility model embodiment, as shown in Figure 2, the utility model embodiment provides a kind of seal cartridge assembly of centrifugal pump drive end, comprises axle sleeve 1 and orifice sleeve 2.
Orifice sleeve 2 is flange plate-like, and material is stainless steel, is socketed on the outer wall of this axle sleeve 1, and has matching gap between this orifice sleeve 2 and the outer wall of axle sleeve 1, and the internal face of the outer wall of axle sleeve 1 or orifice sleeve 2 has a plurality of grooves 3.
Shown in Fig. 2 is that this groove 3 is set in the outer wall of axle sleeve 1.Axle sleeve 1 is during with pump shaft High Rotation Speed, and the suspended particulate in buck enters between axle sleeve 1 and orifice sleeve 2, and suspended particulate can sink to the bottom land of groove 3, therefore can not make to produce interference between axle sleeve 1 and orifice sleeve 2, has avoided wearing and tearing and locking between the two.
Preferably, groove 3 is backpitch shape groove, is arranged in the outer wall of axle sleeve 1.So-called backpitch refers to the direction of rotation (if the turning to as clockwise of pump shaft, the direction of helical groove is counterclockwise) of its sense of rotation of helical curve that groove forms and pump shaft, and this groove 3 is formed by multiple thread or single screw thread.
Because axle sleeve 1 rotates with pump shaft; the groove 3 that backpitch shape is set in the outer wall of axle sleeve 1 can make liquid in pump produce one hugely to the strength of internal suction; thereby play the step-down of drawing water to centrifugal pump inside, protect the effect of mechanical seal, improved the sealing effect of stuffing box gland.
Above-mentioned groove 3 can be also T-shaped groove, and trigonometric form groove or dovetail groove are arranged on the outer wall of axle sleeve 1, and the sectional shape that groove 3 is axially cut open along pump shaft is T shape, triangle or trapezoidal.Preferably, this groove 3 is dovetail groove, the cross section of axially cutting open along pump shaft, and this groove is formed with a plurality of tooth-like parts, and tooth-like part can be processed by lathe, and the tooth depth of the tooth-like part processing is preferably 1.2mm, and tooth root is wide is 1.4mm.
On the basis of above-described embodiment, the matching gap that can arrange between orifice sleeve 2 and axle sleeve 1 is 0.2-0.5mm, is preferably 0.3mm.Matching gap herein, refers to the Topland of tooth-like part and the gap between orifice sleeve 2 internal faces.
Matching gap is bigger than normal may cause internal leakage to become large, the efficiency step-down of centrifugal pump.The matching gap installation precision that makes less than normal uprises, and pump shaft and rotor part required precision are too high, and it is large that cost becomes, and difficulty is installed.Reasonably matching gap can make centrifugal pump normal in service more steady, and efficiency is best.
In order to improve the working life of orifice sleeve 2 and axle sleeve 1, can carry out chromium plating processing or heat treatment to the outer surface of axle sleeve 1, to improve the surface hardness of axle sleeve 1.
The utility model embodiment also provides a kind of centrifugal pump, comprise drive end, so-called drive end, refers to that centrifugal pump is near one end of prime mover, it is a part for centrifugal pump, comprise a plurality of parts, comprising pump shaft, centrifugal pump also comprises and is arranged on the seal cartridge assembly that the utility model any embodiment of drive end provides, the axle sleeve of assembly is socketed on pump shaft, with pump shaft, together rotate, orifice sleeve is socketed on the outer wall of axle sleeve, and the outer wall of axle sleeve is provided with a plurality of grooves.
Seal cartridge assembly and the centrifugal pump of the centrifugal pump drive end that the utility model embodiment provides arrange groove by the outer wall at axle sleeve, make suspended particulate in liquid medium when the gap entering between axle sleeve and orifice sleeve, can sink to bottom portion of groove, thereby avoided the interference between axle sleeve and orifice sleeve, wearing and tearing have been reduced, prevented from, between axle sleeve and orifice sleeve, locking occurs, improved sealing effect.
Finally it should be noted that: above embodiment only, in order to the technical solution of the utility model to be described, is not intended to limit; Although the utility model is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: its technological scheme that still can record aforementioned each embodiment is modified, or part technical characteristics is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the scope of each embodiment's technological scheme of the utility model.
Claims (8)
1. the seal cartridge assembly of a centrifugal pump drive end, comprise axle sleeve and orifice sleeve, described axle sleeve is socketed in the pump shaft end of centrifugal pump, described orifice sleeve is socketed on the outer wall of described axle sleeve, between described orifice sleeve and the outer wall of described axle sleeve, there is matching gap, it is characterized in that: the outer wall of described axle sleeve is provided with a plurality of grooves; Or the internal face of described orifice sleeve is provided with a plurality of grooves.
2. the seal cartridge assembly of centrifugal pump drive end according to claim 1, is characterized in that: described groove is backpitch shape groove, and be arranged in the outer wall of described axle sleeve, described groove is formed by multiple thread or single screw thread.
3. the seal cartridge assembly of centrifugal pump drive end according to claim 1, is characterized in that: described groove is T-shaped groove, and trigonometric form groove or dovetail groove are arranged in the outer wall of described axle sleeve.
4. the seal cartridge assembly of centrifugal pump drive end according to claim 3, is characterized in that: described groove is dovetail groove, and the axial cross section of described groove forms a plurality of tooth-like parts, and the tooth depth of described tooth-like part is 1.2mm, and tooth root is wide is 1.4mm.
5. according to the seal cartridge assembly of the arbitrary described centrifugal pump drive end of claim 1 to 4, it is characterized in that: the matching gap between described orifice sleeve and described axle sleeve is 0.2-0.5mm.
6. the seal cartridge assembly of centrifugal pump drive end according to claim 5, is characterized in that: the matching gap between described orifice sleeve and described axle sleeve is 0.3mm.
7. the seal cartridge assembly of centrifugal pump drive end according to claim 6, is characterized in that: described groove is chromium plating groove.
8. a centrifugal pump, comprises drive end, and described drive end comprises pump shaft, it is characterized in that, described centrifugal pump comprises the seal cartridge assembly that is arranged on centrifugal pump drive end as described in described drive end as arbitrary in claim 1-7, and described axle sleeve is socketed on described pump shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320524067.6U CN203532310U (en) | 2013-08-26 | 2013-08-26 | Seal cartridge assembly at driving end of centrifugal pump and centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320524067.6U CN203532310U (en) | 2013-08-26 | 2013-08-26 | Seal cartridge assembly at driving end of centrifugal pump and centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203532310U true CN203532310U (en) | 2014-04-09 |
Family
ID=50418523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320524067.6U Expired - Lifetime CN203532310U (en) | 2013-08-26 | 2013-08-26 | Seal cartridge assembly at driving end of centrifugal pump and centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203532310U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486074A (en) * | 2013-08-26 | 2014-01-01 | 神华集团有限责任公司 | Seal cartridge assembly for driving end of centrifugal pump and centrifugal pump |
-
2013
- 2013-08-26 CN CN201320524067.6U patent/CN203532310U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486074A (en) * | 2013-08-26 | 2014-01-01 | 神华集团有限责任公司 | Seal cartridge assembly for driving end of centrifugal pump and centrifugal pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140409 |