CN103511321A

CN103511321A - Mining heavy type slurry pump with water seal arranged at suction inlet

Info

Publication number: CN103511321A
Application number: CN201210278958.8A
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 AND NEW MATERIALS CO Ltd
Priority date: 2012-08-03
Filing date: 2012-08-03
Publication date: 2014-01-15

Abstract

Disclosed is a mining heavy type slurry pump with a water seal arranged at a suction inlet. The mining heavy type slurry pump with the water seal arranged at the suction inlet is composed of a water feeding pipe, a suction inlet gasket, an inner ring front protecting board, a lip mouth sealing ring, an outer ring front protecting board, a pump cover, a front protecting sleeve, an impeller, a rear protecting sleeve, a pump body, a rear protecting board, a bearing, a bracket, a shaft, an O-type ring and the like. The mining heavy type slurry pump with the water seal arranged at the suction inlet is a horizontal centrifugal double-shell slurry pump, due to the fact that the water seal structure is arranged at the suction inlet of the pump, water seal water with certain pressure is supplied, the slurry circulation existing at the suction inlet can be damaged, the problem that the front protecting board of the mining heavy type slurry pump is short in service life is solved radically, the efficiency of the slurry pump is improved at the same time, and the adjustment of the gap between the impeller and the front protecting board does not need to be conducted.

Description

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

Affiliated technical field

The present invention relates to fluid machinery, relate 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 inner housing flow passage part is generally comprised of front and back backplate and sheath.Heavy type slurry pump is mainly used in grinding machine discharging pulp conveying, the cyclone separator Gei Kuangdeng workshop section in ore-dressing technique on mine, fed sheet of a media is the slurry that contains solid particle, ore pulp has that particle is large, concentration high, 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, as shown in Figure 3, there is certain gap near the structure adopting the suction port of mining heavy type slurry pump between impeller and apron plate, this will cause the high pressure ore pulp of impeller outlet by gap, to be back to the impeller inlet at low pressure place, forms circulation.Circulation is brought solid particle in gap into, form grinding with the impeller of High Rotation Speed, make the working life of apron plate short, the rate of wear of apron plate is fast, need often to regulate the gap between apron plate and impeller, avoid excesssive gap to cause the efficiency of pump too low; Due to the existence of circulation, make the flow of an impeller part not be transported to delivery side of pump completely, this part flow obtains energy consumption in whole circulation process from impeller, from highly pressurised liquid, becomes low pressure liquid simultaneously, and this will reduce the efficiency of pump.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 efficiency of changing number of times, improving pump significant.

Summary of the invention

Low for solving working life of apron plate, improve the efficiency 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 suction port place exists, low working life from solving in essence mining heavy type slurry pump apron plate, improve the efficiency of slag stock pump simultaneously.

The technical solution adopted for the present invention to solve the technical problems is:

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

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

Described sealing structure for water, 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., formed, it is characterized in that certain pressure water seal water enters inner chamber by intake pipe, by hydraulic pressure and spring ring, making L-type seal ring be pressed in spiral choma surface forms sealing, avoids press water to enter 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 countersunk head ring, can protect screw.

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

Described spiral choma, with L-type seal ring surface of contact, have triangular-section spiral chute, contrary with the rotation direction of impeller, further improve the sealing effect with L-type seal ring.

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

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

Accompanying drawing explanation

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

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

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

In 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. brackets, 14. axles, 15.O type circle, 16. countersunk head rings, 17. minutes water rings, 18. cross water space, 19. socket head screw M12,20. spiral chomas, 21. spring rings, 22.L RunddichtringO, 23. socket head screw M10,24. apron plates.

Embodiment

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

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), between outer ring apron plate (5) and inner ring apron plate (3), by lip seal circle (4) sealing, the water seal water of certain pressure enters inner chamber by supply pipe (1).

As shown in Figure 2, certain pressure water enters after 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 water space (18) of crossing that press water can only form by impeller (8), spiral choma (20) and inner ring apron plate (3) enters the gap formation water seal between impeller (8) and backplate.

As shown in Figure 2, for improving the seal action of L-type seal ring (22), on spiral choma (20) surface, have the triangular-section spiral chute contrary with impeller (8) sense of rotation; Sealing between spiral choma (20) and impeller (8) adopts seam sealing, by socket head screw M10 (23), connects; L-type seal ring (22) used socket head screw M12 (19) to be fixed on 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 gap between suction port sheath and pump cover and revealing.

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), bracket (13), axle (14), O type circle (15) etc., formed, it is characterized in that: the mining heavy type slurry pump of suction port band water seal, for horizontal centrifugal Double-casing slag stock pump, at pump intake place with sealing structure for water.

2. according to sealing structure for water claimed in claim 1, by 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., formed, it is characterized in that: by hydraulic pressure and spring ring (21), make L-type seal ring (22) distortion, be pressed in spiral choma (20) surface and form sealing.

3. according to sealing structure for water claimed in claim 2; it is characterized 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 spiral choma claimed in claim 2, it is characterized in that: on spiral choma (20), have rotation direction contrary triangular-section single line or multi-thread spiral chute with impeller (8).

5. according to sealing structure for water claimed in claim 2, it is characterized in that: between spiral choma (20) and impeller (8), by seam, seal, with socket head screw M12 (19), be fixed on impeller (8).

6. according to sealing structure for water claimed in claim 2, it is characterized in that: suction port sheath (2) is provided with the sealing of O type circle between pump cover (6).