CN203374508U - Chemical centrifugal pump with throat bushing floating function - Google Patents
Chemical centrifugal pump with throat bushing floating function Download PDFInfo
- Publication number
- CN203374508U CN203374508U CN201320354462.4U CN201320354462U CN203374508U CN 203374508 U CN203374508 U CN 203374508U CN 201320354462 U CN201320354462 U CN 201320354462U CN 203374508 U CN203374508 U CN 203374508U
- Authority
- CN
- China
- Prior art keywords
- pump
- lining
- mounting groove
- floating type
- throat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000007667 floating Methods 0.000 title claims abstract description 40
- 239000000126 substance Substances 0.000 title claims abstract description 19
- 125000006850 spacer group Chemical group 0.000 claims abstract description 20
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a chemical centrifugal pump with a throat bushing floating function. The chemical centrifugal pump comprises a front pump body, a rear pump cover, impellers and a pump shaft, wherein the pump shaft penetrates an axial hole in the rear pump cover and is inserted in a sealing structure; the pump shaft is provided with an impeller spacer bush which is arranged in the axial hole of the rear pump cover in a sleeved manner and is arranged to have a gap with the inner wall of the axial hole; a mounting groove formed by a stepped hole of a bushing seat and the shoulder of the axial hole of the rear pump shaft is formed in the inner wall of the axial hole; the mounting groove is internally provided with an annular floating type throat bushing in an embedded manner; the outer wall of the floating type throat bushing and the bottom surface of the mounting groove are in clearance arrangement; the inner wall of the floating type throat bushing and the outer wall of the impeller spacer bush are in clearance arrangement; a containing hole located in the direction of the axial line of the pump shaft is formed in the sidewall of the mounting groove; a spring is arranged in the containing hole; one end of the spring supports against the bottom of the containing hole while the other end of the spring supports against the floating type throat bushing. The chemical centrifugal pump with the throat bushing floating function has the advantages of a good capability of obstructing medium exchange between a pump cavity and a sealing cavity, and a compact and simple structure.
Description
Technical field
The utility model relates to the chemical centrifugal pump field, is specifically related to a kind of chemical centrifugal pump with throat's lining float function.
Background technique
Chemical centrifugal pump is in order to adapt to the various chemical physical properties of chemical medium, such as: High Temperature High Pressure, low-temp low-pressure, corrosion abrasion, particle crystallization etc., mechanical seal to chemical centrifugal pump has the requirement far above general normal temperature water pump, it is between the pump chamber of the sealed chamber that mechanical seal is installed and front, generally all require throat's lining is installed, for the Medium Exchange between isolating seal chamber and pump chamber.
As depicted in figs. 1 and 2, the chemical centrifugal pump of prior art band tradition throat lining comprises the front pump housing 1, rear pump cover 2, impeller 3 and pump shaft 4, impeller 3 is sheathed on pump shaft 4 and is positioned at the interconnective front pump housing 1, between rear pump cover 2, the outside of rear pump cover 2 is provided with sealing configuration 5, pump shaft 4 passes the axis hole 21 on rear pump cover 2 and is inserted in sealing configuration 5, pump shaft 4 is provided with impeller spacer 41, impeller spacer 41 is located in axis hole 21 and with the inwall gap of axis hole 21 and is arranged, be provided with fixing throat's lining 60 in the inside of axis hole 21, therefore must keep enough running clearances 61 between impeller spacer 41 and throat's lining 60, it is less that running clearance 61 is controlled, be located at the Seal cage of impeller spacer 41 both sides and the Medium Exchange amount between pump chamber is less.Exist and relatively rotate between pump shaft 4 due to static throat's lining 60 and rotation, therefore the running clearance 61 between throat's lining 60 and pump shaft 4 is out of contior too little, the effect due to the medium radial force when operation of the pump shaft 4 of the pump of cantilever structure can produce certain degree of disturbing in addition, due to the machining accuracy of various parts and misaligning of fit up gap generation, more cause running clearance 16 can not control to minimum simultaneously.Just because running clearance 61 can not be accomplished very little, the phenomenon that therefore interlock occurs between throat's lining 60 and pump shaft 4 in actual applications is of common occurrence, even cause the situation of pump shaft 4 fractures all to happen occasionally, simultaneously very little due to what running clearance 61 can not be controlled, therefore the Medium Exchange amount between Seal cage and pump chamber can not reach minimum, and such result is disadvantageous to the normal operation of mechanical seal.
The model utility content
The technical problems to be solved in the utility model is to provide and a kind ofly intercepts pump chamber and Seal cage Medium Exchange ability is good, compact structure, the chemical centrifugal pump with throat's lining float function simple in structure.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of chemical centrifugal pump with throat's lining float function, comprise the front pump housing, rear pump cover, impeller and pump shaft, described impeller set is located on pump shaft and is positioned at the interconnective front pump housing, between rear pump cover, the outside of described rear pump cover is provided with sealing configuration, described pump shaft passes the axis hole on rear pump cover and is inserted in sealing configuration, described pump shaft is provided with the impeller spacer, described impeller spacer is located in axis hole and with the inwall gap of axis hole and is arranged, the inwall of described axis hole is provided with mounting groove, be embedded with the floating type throat lining of annular in described mounting groove, the outer wall of described floating type throat lining and the gap, bottom surface of mounting groove are arranged, the inwall of described floating type throat lining and the outer wall gap of impeller spacer are arranged, the sidewall of described mounting groove is provided with the receiving hole of arranging along the axial direction of pump shaft, be provided with spring in described receiving hole, one end of described spring is conflicted on the bottom of receiving hole, one end of described spring is conflicted on floating type throat lining.
As further improvement in the technical proposal:
Described rear pump cover is provided with liner clamp, described liner clamp is provided with stepped part, and the inboard of described rear pump cover is provided with to pump shaft one side stretches out the convex shoulder of layout, and described mounting groove is formed between the stepped part of convex shoulder and liner clamp, between described liner clamp and rear pump cover, is provided with seal ring.
Described rear pump cover is provided with fitting seat, described liner clamp is installed in fitting seat, the outside that is positioned at fitting seat on rear pump cover is provided with circlip groove, is provided with the liner clamp back-up ring in described circlip groove, and described liner clamp back-up ring is located at the outside of fitting seat and liner clamp is stopped and is fixed in fitting seat.
The first gap between the outer wall of described floating type throat lining and the bottom surface of mounting groove is greater than 0.75 millimeter; The second gap between the inwall of described floating type throat lining and the outer wall of impeller spacer is less than 0.1 millimeter.
The utlity model has following advantage: the inwall of the utility model axis hole is provided with mounting groove, be embedded with the floating type throat lining of annular in mounting groove, the outer wall of floating type throat lining and the gap, bottom surface of mounting groove are arranged, the inwall of floating type throat lining and the outer wall gap of impeller spacer are arranged, the sidewall of mounting groove is provided with the receiving hole of arranging along the axial direction of pump shaft, be provided with spring in receiving hole, one end of spring is conflicted on the bottom of receiving hole, one end of spring is conflicted on floating type throat lining, floating of certain limit radially occurs in what make that floating type throat lining can be along pump shaft, thereby can effectively intercept the Medium Exchange between the Seal cage of the pump chamber at impeller place and sealing configuration, the occasion of temperature limiting is arranged at Seal cage especially, existence due to floating type throat lining, degree of disturbing while making the pump shaft running, processing is installed misaligning of causing etc. and can be recompensed by the flying height of floating type throat lining, played practical guarantee to the normal operation of pump, there is the pump chamber of obstruct and Seal cage Medium Exchange ability good, compact structure, advantage simple in structure.
The accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, below will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The broken section structural representation that Fig. 1 is prior art.
The local structure for amplifying schematic diagram that Fig. 2 is A position in Fig. 1.
The broken section structural representation that Fig. 3 is the utility model embodiment.
The local structure for amplifying schematic diagram that Fig. 4 is B position in Fig. 3.
Marginal data: 1, the front pump housing; 2, rear pump cover; 21, axis hole; 22, mounting groove; 23, receiving hole; 24, spring; 25, liner clamp; 251, stepped part; 252, seal ring; 26, convex shoulder; 27, fitting seat; 271, circlip groove; 272, liner clamp back-up ring; 3, impeller; 4, pump shaft; 41, impeller spacer; 5, sealing configuration; 60, throat's lining; 6, floating type throat lining; 61, running clearance; 62, the first gap; 63, the second gap.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail, thereby so that advantage of the present utility model and feature can be easier to be it will be appreciated by those skilled in the art that, protection domain of the present utility model is made to more explicit defining.
As shown in Figure 3 and Figure 4, the chemical centrifugal pump that the present embodiment has throat's lining float function comprises the front pump housing 1, rear pump cover 2, impeller 3 and pump shaft 4, impeller 3 is sheathed on pump shaft 4 and is positioned at the interconnective front pump housing 1, between rear pump cover 2, the outside of rear pump cover 2 is provided with sealing configuration 5, pump shaft 4 passes the axis hole 21 on rear pump cover 2 and is inserted in sealing configuration 5, pump shaft 4 is provided with impeller spacer 41, impeller spacer 41 is located in axis hole 21 and with the inwall gap of axis hole 21 and is arranged, the inwall of axis hole 21 is provided with mounting groove 22, be embedded with the floating type throat lining 6 of annular in mounting groove 22, the outer wall of floating type throat lining 6 and the gap, bottom surface of mounting groove 22 are arranged, the inwall of floating type throat lining 6 and the outer wall gap of impeller spacer 41 are arranged, the sidewall of mounting groove 22 is provided with the receiving hole 23 of arranging along the axial direction of pump shaft 4, be provided with spring 24 in receiving hole 23, one end of spring 24 is conflicted on the bottom of receiving hole 23, one end of spring 24 is conflicted on floating type throat lining 6, floating of certain limit radially occurs in what make that floating type throat lining 6 can be along pump shaft 4, thereby make the present embodiment can effectively intercept the Medium Exchange between the Seal cage of the pump chamber at impeller 3 places and sealing configuration 5, the occasion of temperature limiting is arranged at Seal cage especially, existence due to floating type throat lining 6, degree of disturbing while making pump shaft 4 running, processing is installed misaligning of causing etc. and can be recompensed by the flying height of floating type throat lining 6, played practical guarantee to the normal operation of pump, there is the pump chamber of obstruct and Seal cage Medium Exchange ability good, compact structure, advantage simple in structure.
In the present embodiment, rear pump cover 2 is provided with liner clamp 25, liner clamp 25 is provided with stepped part 251, and the inboard of rear pump cover 2 is provided with the convex shoulder 26 that stretches out layout to pump shaft 4 one sides, mounting groove 22 is formed between the stepped part 251 of convex shoulder 26 and liner clamp 25, be provided with seal ring 252 between liner clamp 25 and rear pump cover 2, therefore by liner clamp 25, can realize the installation and removal of floating type throat lining 6, install simple and convenient.
In the present embodiment, rear pump cover 2 is provided with fitting seat 27, liner clamp 25 is installed in fitting seat 27, the outside that is positioned at fitting seat 27 on rear pump cover 2 is provided with circlip groove 271, be provided with liner clamp back-up ring 272 in circlip groove 271, liner clamp back-up ring 272 is located at the outside of fitting seat 27 and liner clamp 25 is stopped and is fixed in fitting seat 27, the simple baffle plate of the installing/dismounting of liner clamp 25, and also sound construction is reliable.
In the present embodiment, the first gap 62 between the outer wall of floating type throat lining 6 and the bottom surface of mounting groove 22 is greater than 0.75 millimeter; The second gap 63 between the inwall of floating type throat lining 6 and the outer wall of impeller spacer 41 is less than 0.1 millimeter, thereby both can guarantee the domain of walker of floating type throat lining 6, thereby the problem misaligned caused is installed in degree of disturbing, processing while adapting to pump shaft 4 running, and can effectively intercept the Medium Exchange between the Seal cage of the pump chamber at impeller 3 places and sealing configuration 5.
The foregoing is only preferred implementation of the present utility model, protection domain of the present utility model is not limited in above-mentioned mode of execution, and every technological scheme that belongs to the utility model principle all belongs to protection domain of the present utility model.For a person skilled in the art, some improvements and modifications of carrying out under the prerequisite that does not break away from principle of the present utility model, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (4)
1. the chemical centrifugal pump with throat's lining float function, comprise the front pump housing (1), rear pump cover (2), impeller (3) and pump shaft (4), described impeller (3) is sheathed on pump shaft (4) above and is positioned at the interconnective front pump housing (1), between rear pump cover (2), the outside of described rear pump cover (2) is provided with sealing configuration (5), described pump shaft (4) passes the axis hole (21) on rear pump cover (2) and is inserted in sealing configuration (5), described pump shaft (4) is provided with impeller spacer (41), described impeller spacer (41) is located in axis hole (21) and with the inwall gap of axis hole (21) and is arranged, it is characterized in that: the inwall of described axis hole (21) is provided with mounting groove (22), be embedded with the floating type throat lining (6) of annular in described mounting groove (22), the gap, bottom surface of the outer wall of described floating type throat lining (6) and mounting groove (22) is arranged, the outer wall gap of the inwall of described floating type throat lining (6) and impeller spacer (41) is arranged, the sidewall of described mounting groove (22) is provided with the receiving hole (23) of arranging along the axial direction of pump shaft (4), be provided with spring (24) in described receiving hole (23), one end of described spring (24) is conflicted on the bottom of receiving hole (23), one end of described spring (24) is conflicted on floating type throat lining (6).
2. the chemical centrifugal pump with throat's lining float function according to claim 1, it is characterized in that: described rear pump cover (2) is provided with liner clamp (25), described liner clamp (25) is provided with stepped part (251), and the inboard of described rear pump cover (2) is provided with the convex shoulder (26) that stretches out layout to pump shaft (4) one sides, described mounting groove (22) is formed between the stepped part (251) of convex shoulder (26) and liner clamp (25), between described liner clamp (25) and rear pump cover (2), is provided with seal ring (252).
3. the chemical centrifugal pump with throat's lining float function according to claim 2, it is characterized in that: described rear pump cover (2) is provided with fitting seat (27), described liner clamp (25) is installed in fitting seat (27), the outside that is positioned at fitting seat (27) on rear pump cover (2) is provided with circlip groove (271), be provided with liner clamp back-up ring (272) in described circlip groove (271), described liner clamp back-up ring (272) is located at the outside of fitting seat (27) and liner clamp (25) is stopped and is fixed in fitting seat (27).
4. the chemical centrifugal pump with throat's lining float function according to claim 2, it is characterized in that: the first gap (62) between the bottom surface of the outer wall of described floating type throat lining (6) and mounting groove (22) is greater than 0.75 millimeter; The second gap (63) between the outer wall of the inwall of described floating type throat lining (6) and impeller spacer (41) is less than 0.1 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320354462.4U CN203374508U (en) | 2013-06-20 | 2013-06-20 | Chemical centrifugal pump with throat bushing floating function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320354462.4U CN203374508U (en) | 2013-06-20 | 2013-06-20 | Chemical centrifugal pump with throat bushing floating function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203374508U true CN203374508U (en) | 2014-01-01 |
Family
ID=49837038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320354462.4U Expired - Fee Related CN203374508U (en) | 2013-06-20 | 2013-06-20 | Chemical centrifugal pump with throat bushing floating function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203374508U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757549A (en) * | 2018-08-02 | 2018-11-06 | 山东寿光鲁清石化有限公司 | High-temperature pump and sealing mechanism |
| CN110454413A (en) * | 2019-08-29 | 2019-11-15 | 重庆美的通用制冷设备有限公司 | Compressor and air-conditioning system |
-
2013
- 2013-06-20 CN CN201320354462.4U patent/CN203374508U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757549A (en) * | 2018-08-02 | 2018-11-06 | 山东寿光鲁清石化有限公司 | High-temperature pump and sealing mechanism |
| CN110454413A (en) * | 2019-08-29 | 2019-11-15 | 重庆美的通用制冷设备有限公司 | Compressor and air-conditioning system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111058932B (en) | Two-way oil return mechanism of automatically controlled silicone oil fan clutch | |
| CN106762694A (en) | A kind of miniature hydraulic suspension mechanical pump | |
| CN203374508U (en) | Chemical centrifugal pump with throat bushing floating function | |
| CN203823072U (en) | Cartridge mechanical seal device | |
| CN201944013U (en) | Spent fuel water pool cooling pump for nuclear power station | |
| CN206259838U (en) | A kind of wheel hub electric motor of electric vehicle for being provided with waterproof vent valve | |
| CN202301154U (en) | Mechanical seal | |
| CN201934389U (en) | Boracic acid conveying pump for nuclear power plant | |
| CN112392773B (en) | Low-noise shielding pump with axial force balance tube structure | |
| CN103047171B (en) | The global function throttling arrangement that floats | |
| CN206386270U (en) | A kind of vacuum pump full floating sealing structure | |
| CN104791291A (en) | Carbon ring sealed centrifugal fan | |
| CN104914412A (en) | Sealed end face self-compensating radar water slide ring | |
| CN201802678U (en) | Medicine pump | |
| CN203214399U (en) | Sealing device for centrifugal type blower fan | |
| CN102116321B (en) | Boric acid delivery pump for nuclear power station | |
| CN205533276U (en) | There is not sealed pipeline pump | |
| CN209761793U (en) | Bidirectional air exhaust fan | |
| CN105443397A (en) | Electronic pump | |
| CN205977786U (en) | Vanes of centrifugal pressure fan and centrifugal pressure fan with same vanes | |
| CN204226265U (en) | Novel double end face mechanical seal | |
| CN106996394A (en) | A kind of shell structure of engine cooling water pump | |
| CN221299599U (en) | Horizontal single-stage cantilever centrifugal pump with heat-insulating jacket | |
| CN220081738U (en) | Impeller and pump housing sealing assembly and pump unit with same | |
| CN210623200U (en) | Novel BB2 pump throat bush structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201110 Leann Road, Shanghai, Minhang District, No. 1590 Patentee after: An Morui pump (Shanghai) Co.,Ltd. Address before: 201110 Leann Road, Shanghai, Minhang District, No. 1590 Patentee before: MORETPUMPS (SHANGHAI) Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180102 Address after: 116600 double D7 street, double D port, Dalian economic and Technological Development Zone, Liaoning Province, No. 6 Patentee after: Dalian Suhl Shou pump and Compressor Co.,Ltd. Address before: 201110 Leann Road, Shanghai, Minhang District, No. 1590 Patentee before: An Morui pump (Shanghai) Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140101 Termination date: 20200620 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |