CN202833273U

CN202833273U - Mining heavy slurry pump with water seal at suction inlet

Info

Publication number: CN202833273U
Application number: CN 201220387343
Authority: CN
Inventors: 胡金生; 郑昊; 胡自强
Original assignee: JIANGXI NAIPU MINING MACHINERY AND NEW MATERIALS CO Ltd
Current assignee: Jiangxi Naipu Mining Machinery Co ltd
Priority date: 2012-08-03
Filing date: 2012-08-03
Publication date: 2013-03-27
Anticipated expiration: 2022-08-03

Abstract

The utility model discloses a mining heavy slurry pump with a water seal at a suction inlet. The mining heavy slurry pump comprises a water supply pipe, a suction inlet sheath, an inner ring front protective plate, a lip sealing ring, an outer ring front protective plate, a pump cover, a front sheath, an impeller, a back sheath, a pump body, a back protective plate, a bearing body, a bracket, a shaft, an O-shaped ring and so on. The mining heavy slurry pump with the water seal at the suction inlet is a horizontal centrifugal double-shell slurry pump; a water sealing structure is arranged in the suction inlet of the pump; and through supplying water sealing water with certain pressure, the slurry circulation at the suction inlet can be damaged, so that a problem of short service life of the front protective plate of the mining heavy slurry pump is fundamentally solved, the efficiency of the slurry pump is increased, and a clearance between the impeller and the front protective plate cannot be adjusted.

Description

The mining heavy type slurry pump of suction port band water seal

Affiliated technical field

The utility model relates to fluid machinery, relates in particular to the mining heavy type slurry pump of a kind of suction port band water seal.

Background technique

Mining heavy type slurry pump is a kind of horizontal centrifugal double-shell pump, and frame is metal ceramic, and inner housing is removable flow passage part, and the inner housing flow passage part generally is comprised of front and back backplate and sheath.Heavy type slurry pump is mainly used in grinding machine discharging pulp conveying, cyclone separator in the ore-dressing technique to workshop sections such as ore deposits in the mine, fed sheet of a media is the slurry that contains solid particle, ore pulp has large, the concentration high of particle, cause the flow passage part of slag stock pump short working life, particularly will be starkly lower than sheath and rear backplate the working life of apron plate.

At present, there is certain gap near the structure that adopts the suction port of mining heavy type slurry pump as shown in Figure 3 between impeller and the apron plate, and this high pressure ore pulp that will cause impeller outlet is back to the impeller inlet at low pressure place by the gap, forms circulation.Circulation is brought solid particle in the gap into, form grinding with the impeller of High Rotation Speed, so that the working life of apron plate is short, the rate of wear of apron plate is fast, need often to regulate the gap between apron plate and the impeller, avoid excesssive gap to cause the efficient of pump excessively low; Because the existence of circulation makes the flow of an impeller part not be transported to delivery side of pump fully, and this part flow obtains energy consumption in whole circulation process from impeller, namely become low pressure liquid from highly pressurised liquid, this will reduce the efficient of pump simultaneously.Therefore, solve the circulation problem at slag stock pump suction port place, improve the working life of apron plate and reduce that to shut down the efficient of changing number of times, improving pump significant.

Summary of the invention

For the working life that solves apron plate low, improve the efficient of mining heavy type slurry pump, the novel mining heavy type slurry pump that the water seal of a kind of suction port band is provided of this use, this slag stock pump can destroy the slurry circulation that the suction port place exists, low working life from solving in essence mining heavy type slurry pump apron plate, improve simultaneously the efficient of slag stock pump.

The technological scheme that its technical problem that solves the utility model adopts is:

The mining heavy type slurry pump of suction port band water seal, formed by supply pipe, suction port sheath, inner ring apron plate, lip seal circle, outer ring apron plate, pump cover, front sheath, impeller, rear sheath, the pump housing, rear backplate, bearing support, carriage, axle, O type circle etc., it is characterized in that the mining heavy type slurry pump of described suction port band water seal, the pump intake place is with sealing structure for water.

Described mining heavy type slurry pump, apron plate are divided into outer ring apron plate, inner ring apron plate and suction port sheath, adopt the lip seal circle between outer ring apron plate and the inner ring apron plate.

Described sealing structure for water, formed by countersunk head ring, minute water ring, mistake water space, socket head screw M12, spiral choma, spring ring, L-type seal ring, socket head screw M10 etc., it is characterized in that the certain pressure water seal water enters inner chamber by intake pipe, making the L-type seal ring be pressed in spiral choma surface by hydraulic pressure and spring ring forms sealing, avoids press water to enter the suction port low pressure area.

Described sealing structure for water, minute water ring and L-type seal ring are fixed on the pump housing by socket head screw M10, and socket head screw M10 is provided with the countersunk head ring, can protect screw.

Described sealing structure for water by seam sealing, is fixed on the impeller with socket head screw M12 between spiral choma and the impeller, during operation and the synchronized rotation of impeller.

Described spiral choma is having triangular-section single line or multi-thread spiral chute with L-type seal ring surface of contact, and the spiral chute rotation direction is opposite with the rotation direction of impeller, further improves the sealing effect with the L-type seal ring.

Described suction port sheath is provided with O type circle between pump cover, prevent that slurry from passing through the suction port sheath and the pump cover gap is revealed.

Compared with prior art, the beneficial effects of the utility model are the working life of improving apron plate, reduce and shut down the number of times of changing; Improve the efficient of slag stock pump, energy-conservation; Can not carry out the gap adjustment between impeller and the apron plate.

Description of drawings

Fig. 1 is the structural representation of the mining heavy type slurry pump of suction port band water seal among the embodiment;

Fig. 2 is the sealing structure for water partial enlarged drawing among Fig. 1;

Fig. 3 is that prior art is not with the schematic representation of sealing structure for water;

Among the figure: 1. supply pipe, 2. suction port sheath, 3. inner ring apron plate, 4. lip seal circle, 5. outer ring apron plate, 6. pump cover, 7. front sheath, 8. impeller, 9. rear sheath, the 10. pump housing, 11. rear backplates, 12. bearing suppories, 13. carriage, 14. axles, 15.O type circle, 16. countersunk head rings, 17. minute water ring, 18. cross water space, 19. socket head screw M12,20. spiral chomas, 21. spring ring, 22.L RunddichtringO, 23. socket head screw M10,24. apron plates.

Embodiment

For technological means, character of innovation that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.

As shown in Figure 1, the mining heavy type slurry pump of suction port band water seal, apron plate (24) is divided into outer ring apron plate (5), inner ring apron plate (3), suction port sheath (2), by lip seal circle (4) sealing, the water seal water of certain pressure enters inner chamber by supply pipe (1) between outer ring apron plate (5) and the inner ring apron plate (3).

As shown in Figure 2, after certain pressure water enters inner chamber, by minute uniform water yield of water ring (17), L-type seal ring (22) compresses by effect and spiral choma (20) surface of hydraulic pressure and spring ring (21), form sealing, prevent that press water from entering suction port, the gap that press water can only enter between impeller (8) and the backplate by the excessively water space (18) that impeller (8), spiral choma (20) and inner ring apron plate (3) form forms water seal.

As shown in Figure 2, for improving the seal action of L-type seal ring (22), have the triangular-section spiral chute opposite with impeller (8) sense of rotation on spiral choma (20) surface; The seam sealing is adopted in sealing between spiral choma (20) and the impeller (8), connects by socket head screw M10 (23); L-type seal ring (22) used socket head screw M12 (19) to be fixed on the pump cover (6) with a minute water ring (17) equally; Suction port sheath (2) and be provided with O type circle (15) between pump cover (6) prevents that slurry from passing through the suction port sheath and the pump cover gap is revealed.

Claims

1. the mining heavy type slurry pump of suction port band water seal, by supply pipe (1), suction port sheath (2), inner ring apron plate (3), lip seal circle (4), outer ring apron plate (5), pump cover (6), front sheath (7), impeller (8), rear sheath (9), the pump housing (10), rear backplate (11), bearing support (12), carriage (13), axle (14), the compositions such as O type circle (15), it is characterized in that: the mining heavy type slurry pump of suction port band water seal, at the pump intake place with sealing structure for water.

2. according to the mining heavy type slurry pump of suction port band claimed in claim 1 water seal, its sealing structure for water is comprised of countersunk head ring (16), minute water ring (17), mistake water space (18), socket head screw M12 (19), spiral choma (20), spring ring (21), L-type seal ring (22), socket head screw M10 (23) etc., it is characterized in that: make L-type seal ring (22) distortion by hydraulic pressure and spring ring (21), be pressed in spiral choma (20) surface and form sealing.

3. according to the mining heavy type slurry pump of suction port band claimed in claim 2 water seal; its sealing structure for water is characterised in that: minute water ring (17) is fixed on the pump housing (10) by socket head screw M10 (23) with L-type seal ring (22); socket head screw M10 (23) is provided with countersunk head ring (16), can protect screw.

4. according to the mining heavy type slurry pump of suction port band claimed in claim 2 water seal, its spiral choma is characterised in that: have rotation direction opposite triangular-section single line or multi-thread spiral chute with impeller (8) at spiral choma (20).

5. according to the mining heavy type slurry pump of suction port band claimed in claim 2 water seal, its sealing structure for water is characterised in that: by the seam sealing, be fixed on the impeller (8) with socket head screw M12 (19) between spiral choma (20) and the impeller (8).

6. according to the mining heavy type slurry pump of suction port band claimed in claim 2 water seal, its sealing structure for water is characterised in that: suction port sheath (2) is provided with the sealing of O type circle between pump cover (6).