CN103062066A - Low-rotating-speed corrosion-resistant abrasion-resistant centrifugal pump - Google Patents
Low-rotating-speed corrosion-resistant abrasion-resistant centrifugal pump Download PDFInfo
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- CN103062066A CN103062066A CN2011103185063A CN201110318506A CN103062066A CN 103062066 A CN103062066 A CN 103062066A CN 2011103185063 A CN2011103185063 A CN 2011103185063A CN 201110318506 A CN201110318506 A CN 201110318506A CN 103062066 A CN103062066 A CN 103062066A
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- centrifugal pump
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Abstract
The invention discloses a low-rotating-speed corrosion-resistant abrasion-resistant centrifugal pump. A motor drives an impeller in a pump body to rotate. A rigidity seal combination is arranged on a rotating shaft. A static ring and a moving ring of the rigidity seal combination achieve sealing through abutting contact with a smooth contacting face. The motor is a quadrupole low-rotating-speed motor. A pump body outer shell comprises a clamp sleeve and a pump cover. The clamp sleeve wraps the outer portion of an inner cavity of the pump body. Small blades are arranged between main blades of the impeller. According to the low-rotating-speed corrosion-resistant abrasion-resistant centrifugal pump, the problem that a conventional centrifugal pump cannot be suitable for a certain chemical industry working condition is completely solved, the main technical performance parameter ranges of the pump are that flow is 10-50 m<3>/h, lift height is 20-60 m, rotating speed is 1450 circles/min, and service life is 2-3 times longer than a common pump. The centrifugal pump can completely be suitable for small-flow and high-lift-height working condition with granule media, performance is reliable, the materials of the inner cavity of the inner pump body are easy to replace through the clamp sleeve structure, and accordingly using requirements of various materials can be flexibly met.
Description
Technical field
The present invention relates to the fluid pump field, especially low-rotate speed anticorrosive wear-resistant centrifugal pump.
Background technique
A lot of small flows, high-lift occasion are used conventional middle-size and small-size chemical industry pump in the industries such as titanium dioxide, flue gas desulfurization, sewage treatment, the high speed pump of supporting bipolar machine mostly, what sealing was adopted is conventional machinery sealing or oil sealing dynamic seal, owing to impurity is arranged or a small amount of crystal is arranged in these operating modes, easily these sealing configurations are produced wearing and tearing.Therefore, in these applying working conditions, the using effect of conventional centrifugal pump is very undesirable, and ubiquity the problem that working life is short, sealing is undesirable.
Summary of the invention
The applicant can not use in specific Chemical Manufacture operating mode preferably for above-mentioned existing conventional centrifugal pump, there is the weak point in working life, seals the shortcomings such as undesirable, a kind of low-rotate speed anticorrosive wear-resistant centrifugal pump rational in infrastructure is provided, thereby can be suitable for specific operation, reduce wear, effectively prolonged working life.
The technical solution adopted in the present invention is as follows:
Vane rotary in a kind of low-rotate speed anticorrosive wear-resistant centrifugal pump, the motor driving pump housing is provided with hard seal combination at running shaft, and the stationary ring of hard seal combination contacts by pushing against of smooth contact surface with rotating ring and realizes sealing.
It is further characterized in that: described motor adopts four utmost point low-rotate speed motors.
Pump housing shell is comprised of chuck and pump cover, and it is outside that chuck is wrapped in pump housing inner chamber.
Described chuck is cast iron quality, and described pump housing inner chamber is non-metallic material.
Be provided with small leaf between the primary blades of described impeller.
Described stationary ring and rotating ring adopt silicon carbide material, and stationary ring utilizes spring to be pushed against on the surface of contact of rotating ring.
Beneficial effect of the present invention is as follows:
Composite design by above structure, the present invention has thoroughly solved the difficult problem that conventional centrifugal pump can not be applicable to specific chemical industry operating mode, the main technical parameters scope of this series pump is: flow 10～50m3/h, lift 20～60m, 1450 rev/mins of rotating speeds, improve 2～3 times than conventional pump working life, can adapt to the small flow that granule medium is arranged, high-lift operating mode fully, reliable performance, the jacket structured material that is easy to change the internal pump intracoelomic cavity is to satisfy flexibly the usage requirement of various materials.
Description of drawings
Fig. 1 is plan view of the present invention, broken section.
Fig. 2 is the right elevation of Fig. 1.
Fig. 3 is jacket structured sectional view of the present invention.
Fig. 4 is the plan view of impeller of the present invention.
Fig. 5 be Fig. 4 in cut open figure.
Fig. 6 is the sectional view of hard seal combination of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described.
As shown in Figure 1, the pump housing of low-rotate speed anticorrosive wear-resistant centrifugal pump of the present invention and motor 2 are installed on the base 1, the output shaft of motor 2 rotates by the impeller 10 that jaw coupling 3, suspension-type bearing support 4 drive in the centrifugal pump body, with the acceleration through impeller 10 of the liquid of fluid inlet 11 input, pump from fluid output 9.
Motor 2 of the present invention adopts four utmost point low-rotate speed motors, has greatly reduced at a high speed wearing and tearing, has improved the wear-out life of flow passage components.
Such as Fig. 2, shown in Figure 3, the pump housing of the present invention adopts novel jacket type structure, and the shell of the pump housing is the chuck 8 of cast iron quality, is wrapped in the outside of the nonmetal pump intracoelomic cavity 7 of plastics or pottery, and utilizes fastening piece to realize being connected with the pump cover 6 of the lining plastic bed of material.In this jacket type structure, pump housing inner chamber 7 can be according to the various materials of different operating mode flexible choices, the mode of structure of changed that the existing pump housing is overall plastic, pottery is moulded, served as a contrast to all steel, lining, after occuring, wearing and tearing only need to change separately pump housing inner chamber 7, and need not to change chuck 8, thereby effectively saved cost, also widened the application of pump.
Such as Fig. 4, shown in Figure 5, the present invention is according to the performance requirement of the small flow of this pump, high-lift, low-rotate speed, changed the design of impeller, increased on the one hand the diameter of impeller, between conventional primary blades 12, increased simultaneously additional small leaf 13, thereby be adapted to this kind small inlet, large diameter impeller, the increase of small leaf neither can be crowded blades arrangement, guarantee the diffusion ratio of runner, but also can suitably increase vane thickness, thereby improved the wear resistance of impeller.
In order to overcome the specific application environment problem that causes seal failure easy to wear, the present invention adopts collection dress sealed mode as shown in Figure 6 firmly hard mechanical seal to be made up at main shaft, the stationary ring 14 of hard seal combination 5 adopts the hard materials such as silicon carbide with rotating ring 16, both smooth contact surface 15 contacts after polishing, stationary ring 14 utilizes spring 18 to push against and realizes sealing simultaneously, sealing is a kind of balanced mechanical seal, when fluid pressure in the pump chamber changes, the specific pressure of its meeting automatic regulation moving stationary ring sealing surface, thereby alleviate the wearing and tearing of dynamic and static ring sealing face, life-saving.The present invention's dependence adds cooling water hard sealing is cooled off, by two turnover water nozzles 17 that become 90 ° of V-arrangements to arrange up, be full of water in the Seal cage and keep flowing of water as long as guarantee, and that cooling water pressure does not need is too high, and when main shaft rotated, cooling water was because centrifugal action, get rid of the sealing surface to dynamic and static ring, not only can implement cooling to dynamic and static ring, and the aggressive medium that can block in the pump chamber leaks, thereby realize reliable sealing.And common machine envelope of the prior art is by working medium coolant seal face, thereby can throw away acid mist, corrosion pump machine and befouling environment, common oil sealing cannot stand the damage of granule medium, and the seal combination of this pump has fundamentally solved these difficult problems, not only is fit to have the operating mode of granule medium, and is applicable equally for other operating modes, owing to have outstanding sealability, are more than three times of conventional seals life-span the sealing lives of hard seal combination 5 of the present invention.
More than describing is explanation of the invention, is not that limited range of the present invention is referring to claim to the restriction of invention, and in the situation of spirit of the present invention, the present invention can do any type of modification.
Claims (6)
1. low-rotate speed anticorrosive wear-resistant centrifugal pump, motor (2) drives impeller (10) rotation in the pump housing, it is characterized in that: be provided with hard seal combination (5) at running shaft, the stationary ring (14) of hard seal combination (5) contacts by pushing against of smooth contact surface (15) with rotating ring (16) and realizes sealing.
2. according to low-rotate speed anticorrosive wear-resistant centrifugal pump claimed in claim 1, it is characterized in that: described motor (2) adopts four utmost point low-rotate speed motors.
3. according to low-rotate speed anticorrosive wear-resistant centrifugal pump claimed in claim 1, it is characterized in that: pump housing shell is comprised of chuck (8) and pump cover (6), and chuck (8) is wrapped in pump housing inner chamber (7) outside.
4. according to low-rotate speed anticorrosive wear-resistant centrifugal pump claimed in claim 3, it is characterized in that: described chuck (8) is cast iron quality, and described pump housing inner chamber (7) is non-metallic material.
5. according to low-rotate speed anticorrosive wear-resistant centrifugal pump claimed in claim 1, it is characterized in that: be provided with small leaf (13) between the primary blades (12) of described impeller (10).
6. according to low-rotate speed anticorrosive wear-resistant centrifugal pump claimed in claim 1, it is characterized in that: described stationary ring (14) adopts silicon carbide material with rotating ring (16), and stationary ring (14) utilizes spring (18) to be pushed against on the surface of contact of rotating ring (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103185063A CN103062066A (en) | 2011-10-19 | 2011-10-19 | Low-rotating-speed corrosion-resistant abrasion-resistant centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103185063A CN103062066A (en) | 2011-10-19 | 2011-10-19 | Low-rotating-speed corrosion-resistant abrasion-resistant centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103062066A true CN103062066A (en) | 2013-04-24 |
Family
ID=48104872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103185063A Pending CN103062066A (en) | 2011-10-19 | 2011-10-19 | Low-rotating-speed corrosion-resistant abrasion-resistant centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103062066A (en) |
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2011
- 2011-10-19 CN CN2011103185063A patent/CN103062066A/en active Pending
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130424 |