CN2806839Y

CN2806839Y - High efficiency slurry chemical pump

Info

Publication number: CN2806839Y
Application number: CN 200420054601
Authority: CN
Inventors: 仲仁义
Original assignee: JINGJIANG KSB PUMPS CO Ltd
Current assignee: JINGJIANG KSB PUMPS CO Ltd
Priority date: 2004-12-27
Filing date: 2004-12-27
Publication date: 2006-08-16
Anticipated expiration: 2014-12-27

Abstract

The utility model discloses a chemical centrifugal pump used for conveying clean liquid media or liquid media with a small amount of solid particles, and the temperature of the liquid media ranges from-20 DEG C to 300 DEG C. The utility model comprises a pump body, a bearing, an impeller, a pump shaft and a pump cover. The utility model is characterized in that a wearing ring of the pump body is arranged on the pump body in the position close to the impeller; a wearing ring of the impeller is arranged in a corresponding position on the impeller. The service life of the utility model is extended, and the production cost of factories can be reduced greatly. A cooling water channel is arranged in a bearing housing. When the temperature of conveyed media reaches 180 DEG C to 300 DEG C, the temperature of the pump can be reduced by pouring cooling water to extend the service life of the pump. The pump can adjust the position of the pump shaft by a bearing gland, so that the pump can always maintain a good working state. The pump can be used for industries such as petroleum, chemical industry, automobile manufacture, non-ferrous metal, foodstuff, power stations, metallurgy, paper making, pharmacy, etc.

Description

Efficient slip chemical pump

Technical field: the utility model relates to a kind of centrifugal pump, particularly relate to a kind of that apply to carry cleaning or contain the small amount of solid particle, solid content≤30%, viscosity≤300CP, temperature are-20 ℃--a kind of chemical centrifugal pump of 300 ℃ of liquid mediums.

Background technique: the slip chemical pump is a kind of one step single sucking (axially suck, radially discharge) corrosion resisting centrifugal pump, be widely used in industries such as oil, chemical industry, automobile making, non-ferrous metal, food, power station, metallurgy, papermaking, pharmacy, be mainly used in the media that is corrosive such as carrying various acid, alkali, salt, also can carry cleaning or contain the small amount of solid particle, solid content≤30%, viscosity≤300CP, temperature are-20 ℃--300 ℃ of liquid mediums.According to the relevant Searches of Patent Literature, though can meet the demands in the at present general one step single sucking corrosion resisting centrifugal pump short time, the long-term overcurrent part of this pump in back of using is easy to wear, occurs leakage phenomenon easily, its working life is very short, and the cost of production of factory can increase substantially.

Summary of the invention: the purpose of this utility model just provides a kind of new design idea, designs a kind ofly can satisfy the one step single sucking corrosion resisting centrifugal pump that is not prone to leakage phenomenon after long-term the use.

The purpose of this utility model is achieved in that a kind of efficient slip chemical pump comprises the pump housing, bearing, impeller, pump shaft, pump cover, on the described pump housing, be provided with import and outlet, this pump housing and described pump cover link together, the described pump housing fixes by intermediate support and bearing housing, described pump shaft by bearing fixing in described bearing housing; End at described pump shaft is fixed with impeller, and described impeller just in time is in the cavity between the pump housing and the pump cover; Between pump cover and pump shaft, be provided with black box, it is characterized in that: be provided with pump housing wear ring at the described pump housing near on the position of impeller, on the relevant position of described impeller, be provided with the impeller abrasion-proof ring.

The utility model compared with prior art has following advantage:

1. because the flow passage of pump is arranged with pump housing wear ring, the impeller abrasion-proof ring is not easy to wear, and be greatly enhanced its working life, the cost of production of factory can reduce significantly.

2. this pump shaft bolster lower side band has cooling water passage, when medium temperature reaches 180 ℃--and bearing bracket stand water flowing cooling in the time of 300 ℃, the working life of having improved pump.

3. there is the outside impeller clearance of pump to adjust structure, can efficiently moves by the long term maintenance pump.

4. high efficiency back unshrouded impeller is carried and is reduced impeller when containing the crystal slip to the crystal fracture effect, is carrying low-flow high-lift, and impeller is difficult for stopping up during the higher medium of pulp density.

5. the rear portion of impeller is an open type, just can reduce the pressure of shaft seal cavity without back blade, prevents crystal, and particle enters an axle envelope position, the working life of having improved Sealing.

6. shaft seal structure has packing seal, mechanical seal, and is not easy to wear when carrying the slip that easily stops up, has abrasion, makes this pump Applicable scope wider, longer service life, and operating cost is lower.

Description of drawings: Fig. 1 is an efficient slip chemical pump structural representation described in the utility model

Fig. 2 is the partial enlarged drawing of bearing bracket stand shown in Fig. 1

1. the pump housing 2. pump covers 3. pump housing wear rings 4. impeller abrasion-proof rings 5. impellers

6. filler 7. Glands 8. bearings 9. bearing housings 10. bearings

11. pump shaft 12. bearing glands 13. axle sleeves 14. mechanical seal covers 15. intermediate supports

16. mechanical seal 17. impeller nuts 18. a permanent lubricating cup 19. cooling water passages

Embodiment: as can be seen from Figure 1, a kind of efficient slip chemical pump comprises the pump housing 1, bearing 8 and 10, impeller 5, pump shaft 11, pump cover 2, on the described pump housing 1, be provided with import and outlet, this pump housing 1 links together with described pump cover 2, the described pump housing 1 fixes by intermediate support 15 and bearing housing 9, and described pump shaft 11 is fixed in the described bearing housing 9 by bearing 8 and 10; End at described pump shaft 11 is fixed with impeller 5, and described impeller 5 just in time is in the cavity between the pump housing 1 and the pump cover 2; Between the axle sleeve 13 on pump cover 2 and the pump shaft 11, be provided with black box, it is characterized in that: be provided with pump housing wear ring 3 at the described pump housing 1 near on the position of impeller 5, on the relevant position of described impeller 5, be provided with impeller abrasion-proof ring 4.

In order to make pump reduce impeller to the crystal fracture effect when conveying contains the crystal slip, and carrying low-flow high-lift, impeller is difficult for stopping up during the higher medium of pulp density, and described impeller 5 adopts high efficiency back unshrouded impeller.

In order to improve the sealing effect of pump, described black box can adopt packing seal or adopt mechanical seal.

Overhaul in order to make pump need not open the pump housing when appearance is leaked after long-term the use, this pump can be adjusted the position of pump shaft 11 by bearing gland 12, makes pump remain good working order, improves the working life and the efficient of pump.

As can be seen from Figure 2, when the medium temperature of carrying reaches 180 ℃--in the time of 300 ℃,, in described bearing housing 9, be provided with cooling water passage 19, by injecting the temperature that cooling water reduces pump, to improve pump working life in order to reduce the temperature of pump shaft 11.

Claims

1. an efficient slip chemical pump comprises the pump housing (1), bearing (8) and (10), impeller (5), pump shaft (11), pump cover (2), on the described pump housing (1), be provided with import and outlet, this pump housing (1) links together with described pump cover (2), the described pump housing (1) fixes by intermediate support (15) and bearing housing (9), and described pump shaft (11) is fixed in the described bearing housing (9) by bearing (8) and (10); End at described pump shaft (11) is fixed with impeller (5), and described impeller (5) just in time is in the cavity between the pump housing (1) and the pump cover (2); Between the axle sleeve (13) on pump cover (2) and the pump shaft (11), be provided with black box, it is characterized in that: be provided with pump housing wear ring (3) at the described pump housing (1) near on the position of impeller (5), on the relevant position of described impeller (5), be provided with impeller abrasion-proof ring (4).

2. efficient slip chemical pump according to claim 1 is characterized in that: described impeller (5) is the back open type.

3. efficient slip chemical pump according to claim 1 is characterized in that: be provided with cooling water passage (19) in described bearing housing (9).

4. efficient slip chemical pump according to claim 1 is characterized in that: described black box is packing seal (6).

5. efficient slip chemical pump according to claim 1 is characterized in that: described black box is mechanical seal (16).