CN204476840U - Metal horizontal centrifugal pump - Google Patents
Metal horizontal centrifugal pump Download PDFInfo
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- CN204476840U CN204476840U CN201520089571.7U CN201520089571U CN204476840U CN 204476840 U CN204476840 U CN 204476840U CN 201520089571 U CN201520089571 U CN 201520089571U CN 204476840 U CN204476840 U CN 204476840U
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Abstract
A kind of metal horizontal centrifugal pump, comprise the pump housing, impeller, cylindric pump cover, be arranged at the mechanical sealing mechanism in the central cavity of pump cover, be connected to the machine sealed cover of pump cover rear end, the outer press cover being connected to the open rearward end place of the pump housing and the pump shaft be connected with impeller, mechanical sealing mechanism comprises sleeve, spring, pressure ring, machine envelope stationary ring, machine envelope rotating ring and rotating seat, sleeve is fixedly connected in the central cavity of pump cover, spring, pressure ring, machine envelope stationary ring is set in turn in the central cavity of sleeve from back to front, spring housing is located on pump shaft, machine sealed cover is supported in the rear end of spring, pressure ring, machine envelope stationary ring is all sheathed on the axle sleeve of pump shaft, rotating seat is arranged at the front end of pump shaft, machine envelope rotating ring is arranged in the aft-opening cavity of this rotating seat, machine envelope moving ring sleeve is located on the axle sleeve of pump shaft, machine envelope rotating ring and machine seal stationary ring and are mutually sealed and matched.The utility model sealability is better, and good corrosion resistance, can be applicable to corrosive fluid operating mode, longer service life.
Description
Technical field
The utility model relates to centrifugal pump technical field, is specifically related to a kind of metal horizontal centrifugal pump.
Background technique
Centrifugal pump designs according to centrifugal principle, and it generally includes impeller, the pump housing, pump shaft, bearing, seal ring and stuffing box.Before startup pump, in the pump housing and suction line, be full of media fluid.During work, centrifugal pump is driven by motor, and the impeller blade band moving medium of High Rotation Speed rotates, and utilizes centrifugal force that medium is thrown toward impeller outer edge from impeller central, is discharged, thus reach the object of conveying by the exhaust port of the pump housing.Centrifugal pump has multiple, by the setting direction of pump shaft, can be divided into horizontal centrifugal pump and vertical off-line pump.
But, the mechanical seal structure of the centrifugal pump of prior art is reasonable not, especially in the occasion of the corrosive fluids such as oil, chemical industry, iron and steel, papermaking, environmental protection, the cemented carbide sealing surface of metal centrifugal pump cannot meet working condition requirement, needs that a kind of sealability is better badly, good corrosion resistance, can be applicable to the metal horizontal centrifugal pump of corrosive fluid operating mode, longer service life in prior art.
Summary of the invention
The purpose of this utility model is the deficiency existed to overcome prior art, provides that a kind of sealability is better, good corrosion resistance, can be applicable to the metal horizontal centrifugal pump of corrosive fluid operating mode, longer service life.
The utility model is achieved through the following technical solutions: a kind of metal horizontal centrifugal pump, comprise the pump housing, be arranged at the impeller in the front half part of pump housing central cavity, be arranged at the pump cover of the cylindrical shape in the latter half part of the central cavity of the pump housing, be arranged at the mechanical sealing mechanism in the central cavity of pump cover, be bolted the machine sealed cover in pump cover rear end, the pump shaft being bolted the outer press cover in the open rearward end place of the described pump housing and being connected with described impeller forward with pump cover through machine sealed cover, described mechanical sealing mechanism comprises sleeve, spring, pressure ring, machine envelope stationary ring, machine envelope rotating ring and rotating seat, described sleeve is fixedly connected in the central cavity of described pump cover, described spring, described pressure ring, described machine envelope stationary ring is set in turn in the central cavity of described sleeve from back to front, described spring housing is located on described pump shaft, described machine sealed cover is supported in the rear end of described spring, described pressure ring is supported in the front end of described spring, described pressure ring, described machine envelope stationary ring is all sheathed on the axle sleeve of pump shaft, described rotating seat is arranged at the front end of described pump shaft, described machine envelope rotating ring is arranged in the aft-opening cavity of this rotating seat, machine envelope moving ring sleeve is located on the axle sleeve of pump shaft, the front-end face that the ear end face of described machine envelope rotating ring and described machine seal stationary ring contacts with each other and is sealed and matched.
Described machine envelope stationary ring is pressureless sintering silicon carbide machine envelope stationary ring, and described machine envelope rotating ring is pressureless sintering silicon carbide machine envelope rotating ring.
The rear end periphery of the central cavity at this pump cover between described pump cover and described machine sealed cover forms annular groove, and the rearward end of described sleeve is provided with annular edge, and this annular is along in the annular groove be pressed between described pump cover and described machine sealed cover.
The excircle of described pump cover is provided with convex annular edge, the periphery of the open rearward end of the described pump housing is provided with the circular groove extended internally from the ear end face of this pump housing, the front end of described outer press cover is provided with ring compression edge, and the convex annular of described pump cover is along being pressed between described circular groove and described ring compression edge.
Also comprise bearing bracket stand, described outer press cover is shaped in the front end of this bearing bracket stand.
Described bearing bracket stand is provided with the bearing chamber extended internally from front-end face, bearing housing is also provided with the bearing chamber extended internally from ear end face, clutch shaft bearing and the second bearing is provided with respectively in two bearing chambers, the front-end face of bearing housing and ear end face are covered with bearing protecgulum and bearing bonnet respectively, the stage casing of described pump shaft is arranged in this bearing housing, is respectively arranged with the first oil sealing and the second oil sealing between two bearing caps and described pump shaft.
The beneficial effects of the utility model are: mechanical seal structure of the present utility model is more reasonable, its simple installation, sealability are better, have good decay resistance, can be applicable to corrosive fluid operating mode, the defect of common metal centrifugal pump can be overcome again simultaneously, ensure working life.
Accompanying drawing explanation
Fig. 1 is cross-sectional view of the present utility model;
Fig. 2 is the structure for amplifying schematic diagram in the A portion of Fig. 1.
In the drawings: the 1-pump housing; 2-impeller nut; 3-impeller; 4-pump cover; 5-mechanical sealing mechanism; 6-machine sealed cover; 7-water retaining ring; 8-bearing protecgulum; 9-first oil sealing; 10-clutch shaft bearing; 11-bearing bracket stand; 12-pump shaft; 13-second oil sealing; 14-second bearing; 15-bearing bonnet; 16-spring; 17-sleeve; 18-pressure ring; 19-axle sleeve; 20-machine envelope stationary ring; 21-machine envelope rotating ring; 22-rotating seat.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
As Fig. 1, shown in Fig. 2, a kind of metal horizontal centrifugal pump, comprises the pump housing 1, be arranged at the impeller 3 in the front half part of the pump housing 1 central cavity, be arranged at the pump cover 4 of the cylindrical shape in the latter half part of the central cavity of the pump housing 1, be arranged at the mechanical sealing mechanism 5 in the central cavity of pump cover 4, be bolted the machine sealed cover 6 in pump cover 4 rear end, the pump shaft 12 being bolted the outer press cover in the open rearward end place of the pump housing 1 and being connected with impeller 3 forward with pump cover 4 through machine sealed cover 6, mechanical sealing mechanism 5 comprises sleeve 17, spring 16, pressure ring 18, machine envelope stationary ring 20, machine envelope rotating ring 21 and rotating seat 22, sleeve 17 is fixedly connected in the central cavity of pump cover 4, spring 16, pressure ring 18, machine envelope stationary ring 20 is set in turn in the central cavity of sleeve 17 from back to front, and spring 16 is sheathed on pump shaft 12, and machine sealed cover 6 is supported in the rear end of spring 16, and pressure ring 18 is supported in the front end of spring 16, pressure ring 18, machine envelope stationary ring 20 is all sheathed on the axle sleeve 19 of pump shaft 12, rotating seat 22 is arranged at the front end of pump shaft 12, machine envelope rotating ring 21 is arranged in the aft-opening cavity of this rotating seat 22, machine envelope rotating ring 21 is sheathed on the axle sleeve 19 of pump shaft 12, and the front-end face that the ear end face of machine envelope rotating ring 21 and machine seal stationary ring 20 contacts with each other and is sealed and matched.
Machine envelope stationary ring 20 is pressureless sintering silicon carbide machine envelope stationary ring 20, and machine envelope rotating ring 21 is pressureless sintering silicon carbide machine envelope rotating ring 21, and pressureless sintering silicon carbide is more wear-resisting, corrosion-resistant more superior, can be the usage requirement that the utility model meets all kinds of bad working environments.
Rear end periphery at the central cavity of this pump cover 4 between pump cover 4 and machine sealed cover 6 forms annular groove, and the rearward end of sleeve 17 is provided with annular edge, and this annular is along in the annular groove be pressed between pump cover 4 and machine sealed cover 6.
The excircle of pump cover 4 is provided with convex annular edge, the periphery of the open rearward end of the pump housing 1 is provided with the circular groove extended internally from the ear end face of this pump housing 1, the front end of outer press cover is provided with ring compression edge, the convex annular of pump cover 4 is along being pressed between circular groove and ring compression edge, by this fit system, pump cover 4 is fixed, make easier for installation.
The utility model also comprises bearing bracket stand 11, and outer press cover is shaped in the front end of this bearing bracket stand 11.This structure is more firm, effectively can ensure connection reliability and the sealability of equipment.
Bearing bracket stand 11 is provided with the bearing chamber extended internally from front-end face, bearing housing is also provided with the bearing chamber extended internally from ear end face, clutch shaft bearing 10 and the second bearing 14 is provided with respectively in two bearing chambers, the front-end face of bearing housing and ear end face are covered with bearing protecgulum 8 and bearing bonnet 15 respectively, the stage casing of pump shaft 12 is arranged in this bearing housing, is respectively arranged with the first oil sealing 9 and the second oil sealing 13 between two bearing caps and pump shaft 12.Pump shaft 12 is arranged with water retaining ring 7 between bearing protecgulum 8 and machine sealed cover 6.
During installation, first pump cover 4, machine sealed cover 6, mechanical sealing mechanism 5 are installed, by impeller nut 2, impeller 3 is installed to the front end of pump shaft 12 again, while tightening impeller nut 2, compress mechanical sealing mechanism 5, make machine sealing position in working state, play seal action, finally the impeller 3 installed, pump cover 4, machine sealed cover 6, mechanical sealing mechanism 5 are put into the central cavity of the pump housing 1, and connect outer press cover.The utility model has easy-to-install advantage.During work, spring 16 better can seal compression situation by controller, thus improves machine sealing property.
Finally should be noted that; above content is only in order to illustrate the technical solution of the utility model; but not the restriction to the utility model protection domain; the simple modification that those of ordinary skill in the art carries out the technical solution of the utility model or equivalently to replace, does not all depart from essence and the scope of technical solutions of the utility model.
Claims (6)
1. a metal horizontal centrifugal pump, it is characterized in that: described metal horizontal centrifugal pump comprises the pump housing, be arranged at the impeller in the front half part of pump housing central cavity, be arranged at the pump cover of the cylindrical shape in the latter half part of the central cavity of the pump housing, be arranged at the mechanical sealing mechanism in the central cavity of pump cover, be bolted the machine sealed cover in pump cover rear end, the pump shaft being bolted the outer press cover in the open rearward end place of the described pump housing and being connected with described impeller forward with pump cover through machine sealed cover, described mechanical sealing mechanism comprises sleeve, spring, pressure ring, machine envelope stationary ring, machine envelope rotating ring and rotating seat, described sleeve is fixedly connected in the central cavity of described pump cover, described spring, described pressure ring, described machine envelope stationary ring is set in turn in the central cavity of described sleeve from back to front, described spring housing is located on described pump shaft, described machine sealed cover is supported in the rear end of described spring, described pressure ring is supported in the front end of described spring, described pressure ring, described machine envelope stationary ring is all sheathed on the axle sleeve of pump shaft, described rotating seat is arranged at the front end of described pump shaft, described machine envelope rotating ring is arranged in the aft-opening cavity of this rotating seat, machine envelope moving ring sleeve is located on the axle sleeve of pump shaft, the front-end face that the ear end face of described machine envelope rotating ring and described machine seal stationary ring contacts with each other and is sealed and matched.
2. metal horizontal centrifugal pump according to claim 1, is characterized in that: described machine envelope stationary ring is pressureless sintering silicon carbide machine envelope stationary ring, and described machine envelope rotating ring is pressureless sintering silicon carbide machine envelope rotating ring.
3. metal horizontal centrifugal pump according to claim 1 and 2, it is characterized in that: the rear end periphery of the central cavity at this pump cover between described pump cover and described machine sealed cover forms annular groove, the rearward end of described sleeve is provided with annular edge, and this annular is along in the annular groove be pressed between described pump cover and described machine sealed cover.
4. metal horizontal centrifugal pump according to claim 1 and 2, it is characterized in that: the excircle of described pump cover is provided with convex annular edge, the periphery of the open rearward end of the described pump housing is provided with the circular groove extended internally from the ear end face of this pump housing, the front end of described outer press cover is provided with ring compression edge, and the convex annular of described pump cover is along being pressed between described circular groove and described ring compression edge.
5. metal horizontal centrifugal pump according to claim 4, is characterized in that: also comprise bearing bracket stand, and described outer press cover is shaped in the front end of this bearing bracket stand.
6. metal horizontal centrifugal pump according to claim 5, it is characterized in that: described bearing bracket stand is provided with the bearing chamber extended internally from front-end face, bearing housing is also provided with the bearing chamber extended internally from ear end face, clutch shaft bearing and the second bearing is provided with respectively in two bearing chambers, the front-end face of bearing housing and ear end face are covered with bearing protecgulum and bearing bonnet respectively, the stage casing of described pump shaft is arranged in this bearing housing, is respectively arranged with the first oil sealing and the second oil sealing between two bearing caps and described pump shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520089571.7U CN204476840U (en) | 2015-02-07 | 2015-02-07 | Metal horizontal centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520089571.7U CN204476840U (en) | 2015-02-07 | 2015-02-07 | Metal horizontal centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204476840U true CN204476840U (en) | 2015-07-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520089571.7U Active CN204476840U (en) | 2015-02-07 | 2015-02-07 | Metal horizontal centrifugal pump |
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| Country | Link |
|---|---|
| CN (1) | CN204476840U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106246922A (en) * | 2016-08-25 | 2016-12-21 | 浙江南元泵业有限公司 | horizontal mechanical seal for pump |
| CN110410358A (en) * | 2019-08-08 | 2019-11-05 | 安徽卧龙泵阀股份有限公司 | A kind of centrifugation pump machine seal structure |
| CN111648997A (en) * | 2020-06-09 | 2020-09-11 | 长沙佳能通用泵业有限公司 | High-pressure end sealing mechanism of ore pulp multistage centrifugal pump |
-
2015
- 2015-02-07 CN CN201520089571.7U patent/CN204476840U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106246922A (en) * | 2016-08-25 | 2016-12-21 | 浙江南元泵业有限公司 | horizontal mechanical seal for pump |
| CN110410358A (en) * | 2019-08-08 | 2019-11-05 | 安徽卧龙泵阀股份有限公司 | A kind of centrifugation pump machine seal structure |
| CN111648997A (en) * | 2020-06-09 | 2020-09-11 | 长沙佳能通用泵业有限公司 | High-pressure end sealing mechanism of ore pulp multistage centrifugal pump |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |