CN204267309U - For the coarse granule ore slurry pump of underwater operation - Google Patents

For the coarse granule ore slurry pump of underwater operation Download PDF

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Publication number
CN204267309U
CN204267309U CN201420586935.8U CN201420586935U CN204267309U CN 204267309 U CN204267309 U CN 204267309U CN 201420586935 U CN201420586935 U CN 201420586935U CN 204267309 U CN204267309 U CN 204267309U
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impeller
delivery pipe
pump
submersible motor
shaft
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阳宁
唐达生
金星
龚德文
王钊
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Changsha Research Institute of Mining and Metallurgy Co Ltd
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Changsha Research Institute of Mining and Metallurgy Co Ltd
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Abstract

A kind of coarse granule ore slurry pump for underwater operation, comprise two shaft submersible motor, at least one upper pump casing and a lower pump body, on, impeller and stator is equipped with in lower pump body, two shaft submersible motor upper, lower shaft connects respectively, impeller in lower pump body, the disposed outside of two shaft submersible motor has delivery pipe and connecting tube, and the central shaft of the two shaft submersible motor of delivery pipe and connecting tube edge is arranged symmetrically with, delivery pipe is identical with the size shape of connecting tube, the closed at both ends of connecting tube, the import of delivery pipe by upper pump casing and the outlet of lower pump body, and the internal diameter of delivery pipe is equal with the internal diameter of the suction flange connected below lower pump body, equal with the internal diameter of the outlet(discharge) flange connected above upper pump casing.The utility model structure is simple, cost is lower, easy and simple to handle, good stability, can meet deepsea mining system coarse granule ore vertical pipe Hydraulic transportation underwater operation requirement.

Description

For the coarse granule ore slurry pump of underwater operation
Technical field
The utility model belongs to deep-sea mining, hydraulic coal mining and continental rise marine mining equipment technical field, particularly relates to a kind of winning equipment based on vertical pipe hydraulic hoisting technology.
Background technique
Deep-sea metallic mineral resources (as oceanic multi-metal nodule, cobalt bearing crust and Polymetallic sulphide etc.) grain diameter belongs to the category of coarse granule ore.Deep sea diving electric pump rises on the mining dredger of sea by abyssal floor coarse granule ore by vertical pipe, be characterized in, pump must possess the ability of high-lift, low discharge, overcurrent and backflow coarse granule ore, require simultaneously submersible motor have sealing withstand voltage, insulate and prevent the features such as seawater corrosion, also want to adapt to operation under dynamic condition under water.Obviously, the development of this deep sea diving electric pump is that a difficulty is comparatively large, the R&D work of high technology content.
In deepsea mining system, Submerged Motor Pumps has important future in engineering applications in vertical pipe Hydraulic transportation technology, paid much attention to by home and abroad deep-sea mining industry and as the emphasis studied, a few countries such as Germany, Japan and Korea S developed to deep sea diving electric pump.Within 1978, German KSB company have developed two 6 grades of Submerged Motor Pumpss, belong to mixed-flow ore slurry pump type, its structure adopts tube-containing type overall structure, coarse granule ore enters pump impeller by the ring grille passage of outside motor, the center of gravity of pump is positioned at vertical pipe axle center, coarse granule ore, by pump reflux, obtain the success of marine pilot production, but the wearing and tearing of pump is more serious in the Pacific Ocean 5000m depth of water.Within 1988, Japanese ebara corporatlon has manufactured two 8 grades of Submerged Motor Pumpss, belong to centrifugal ore slurry pump type, pump structure is made up of top pump and bottom pump, submersible motor is placed in the middle of two pumps, the deviation of gravity center vertical pipe axle center of pump, coarse granule ore is difficult to be refluxed by pump impeller, but verifies without sea trial.Within 2009, Korea Inst Geoscience & Minera have developed 12 grades of Submerged Motor Pumps, pump structure and Germany similar, near harbour, the Korea S East Sea, depth of water 100m has carried out shallow sea test.
China's Tenth Five-Year Plan Period is 2 grades of Submerged Motor Pumpss with reference to German KSB company 6 grades of Submerged Motor Pumps information processings.And pump structure is improved, it is that (each channel size is 84mm × 65mm, and grid area is 0.03276m by German KSB company outside motor 6 ring grille passages that main structure improves 2) (each channel size is 120mm × 90mm, and grid area is 0.0324m to change 3 ring grille passages into 2).It can thus be appreciated that (diameter 200mm riser tubing basal area is 0.0314m for the basal area of two pump ring grille passages and the basal area of riser tubing 2) equal.As considered from pipeline area of passage, when riser tubing flow velocity one timing, the flow velocity of ring grille passage is equal with the flow velocity of riser tubing.In order to verify that 50mm coarse granule ore is at the overcurrent of pump and reflux capability, Changsha Research Institute of Mining and Metallurgy Co., Ltd. has carried out the usability test of pump ore pulp in the Yang Kuang laboratory of height 30m, riser diameter 200mm, pump performance reaches designing requirement substantially, but pump ring grille passage exists major defect, there is blocking phenomenon in the ring grille passage during backflow of 50mm coarse granule ore in pump.
As seen from the above, there is certain technical problem, if be applied to deep-sea mining engineering also there is certain technology barrier in the Submerged Motor Pumps developed at present both at home and abroad.
Model utility content
The technical problems to be solved in the utility model overcomes the deficiencies in the prior art, provides that a kind of structure is simple, cost is lower, easy and simple to handle, good stability, can meet the coarse granule ore slurry pump of deepsea mining system coarse granule ore vertical pipe Hydraulic transportation underwater operation.
For solving the problems of the technologies described above, the technological scheme that the utility model proposes is a kind of coarse granule ore slurry pump for underwater operation, comprise two shaft submersible motor, at least one upper pump casing and at least one lower pump body, impeller and stator is equipped with in described upper pump casing and lower pump body, described pair of shaft submersible motor upper, lower shaft connects the impeller in described upper pump casing and the impeller in lower pump body respectively, the disposed outside of described pair of shaft submersible motor has delivery pipe and connecting tube, and the central shaft of the two shaft submersible motor of delivery pipe and connecting tube edge is arranged symmetrically with (being centrosymmetric), described delivery pipe is identical with the size shape of connecting tube, the closed at both ends of described connecting tube, the import of described delivery pipe by upper pump casing and the outlet of lower pump body, and the caliber of delivery pipe is arranged to meet following requirement, that is:
Make the mineral slurry flux in delivery pipe equal with the mineral slurry flux in the vertical transport pipeline connecting upper pump casing during the work of coarse granule ore slurry pump.More specifically, the internal diameter of described delivery pipe is equal with the internal diameter of the suction flange connected below lower pump body, and the internal diameter of described delivery pipe is equal with the internal diameter of the outlet(discharge) flange connected above upper pump casing.Suction flange in the technical program and outlet(discharge) flange are parts for CONCENTRIC REDUCER flange arrangement, and large head flange is connected with upper pump casing with lower pump body, and little head flange (i.e. suction flange and outlet(discharge) flange) and vertical transport pipeline are connected.
Above-mentioned in the coarse granule ore slurry pump of underwater operation, preferably, described delivery pipe is connected with lower pump body with upper pump casing with orifice plate respectively by up-hole plate with the upper/lower terminal of connecting tube, up-hole plate and orifice plate all only offer a pod apertures (can be expressed as pod apertures and lower pod apertures), and the upper/lower terminal of delivery pipe communicates with the pod apertures of up-hole plate and orifice plate respectively.
Above-mentioned in the coarse granule ore slurry pump of underwater operation, preferably, lower pod apertures on described orifice plate is arranged in the side of its center hole, upper pod apertures on described up-hole plate is arranged in the opposite side of its center hole, and the projection in the horizontal plane of described upper pod apertures and lower pod apertures is arranged axisymmetricly along the central shaft of two shaft submersible motor.Such vibrational power flow can make ore pulp in delivery pipe course of conveying, produce the effect of spiral escalation, prevents delivery pipe from blocking in conveying coarse granule process.
Above-mentioned in the coarse granule ore slurry pump of underwater operation, preferably, described delivery pipe and connecting tube all helically formula are located at the outside of described pair of shaft submersible motor.Same, such vibrational power flow, ensureing that delivery pipe and connecting tube are centrosymmetric under the prerequisite of arranging, can be guaranteed pulp conveying fluid stable by spiral escalation effect, prevent delivery pipe from blocking in conveying coarse granule process.
Above-mentioned in the coarse granule ore slurry pump of underwater operation, preferably, the upper end shaft of described pair of shaft submersible motor is serially connected with multiple upper pump casing, and passes through Flange joint between each upper pump casing.The lower end shaft of described pair of shaft submersible motor is serially connected with multiple lower pump body, and passes through Flange joint between each lower pump body.
Above-mentioned in the coarse granule ore slurry pump of underwater operation, preferably, impeller in described upper pump casing is upper impeller, impeller in described lower pump body is lower impeller, described upper impeller and lower the impeller all mode of being centrosymmetric are arranged on the upper and lower axle of described pair of shaft submersible motor, and at least one of meet the following conditions:
(1) make to cancel out each other to the waterpower axial force that two shaft submersible motor produces when impeller and lower impeller operation;
(2) central axes of the central axis of impeller and lower impeller and two shaft submersible motor is made;
(3) impeller is made to overlap with the center line of the suction flange be connected below lower pump body with the central axis of lower impeller;
(4) impeller is made to overlap with the center line of the outlet(discharge) flange be connected above upper pump casing with the central axis of lower impeller.
Above-mentioned in the coarse granule ore slurry pump of underwater operation, preferably, the shell of described delivery pipe and connecting tube and described pair of shaft submersible motor is provided with certain interval.By making delivery pipe and the gap between connecting tube and motor housing, the working state of coarse granule ore slurry pump can not only be made more stable, and can prevent from disturbing by motor oscillating, solve the heat dissipation problem of motor.
Technique scheme of the present utility model is mainly based on following principle: by the research suspension of deep-sea coarse granule in pump runner and delivery pipe, slippage and settling character, and the overcurrent of research coarse granule ore pulp in pump runner and delivery pipe and reflux capability; We have done important improvement to the internal structure of coarse granule ore slurry pump and external shape, guarantee coarse granule pulp conveying stability of flow, avoid coarse granule ore pulp and block in pump runner and delivery pipe.
Compared with prior art, the utility model has the advantage of:
(1) along with the development of deep sea mineral resources evaluation and exploration technology, coarse granule ore slurry pump of the present utility model can be applied to the hydraulic hoisting of deepsea mining system coarse granule ore pulp vertical pipe completely;
(2) in the utility model, the upper and lower impeller of two shaft submersible motor and upper and lower stator all have employed asymmetrical arrangement, not only can guarantee the axial force balance of coarse granule ore slurry pump, and can guarantee overcurrent and the backflow of coarse granule ore;
(3) in the utility model, seawater is directly slipped in two shaft submersible motor outside, is conducive to the cooling of motor;
(4) center of gravity of coarse granule ore slurry pump of the present utility model is positioned at the axle center of vertical transport pipeline, can bear dynamic load and the moment of flexure of underwater installation and ocean environment, is suitable for carrying out operation under dynamic condition under water.
(5) coarse granule ore slurry pump of the present utility model is by structural optimal design and improvement, solves blockage problem during coarse granule pulp conveying.
On the whole, coarse granule ore slurry pump structure of the present utility model is simple, cost is lower, easy and simple to handle, the technical requirements of deepsea mining system coarse granule ore vertical pipe Hydraulic transportation can be met, coarse granule ore slurry pump of the present utility model can be applied to deep-sea mining vertical pipe Hydraulic Transportation System on the one hand, the fields such as the defeated coal of waterpower and continental rise marine mining can be applied on the other hand, also can promote the fast development of China's Deep-sea Mining Technology.
Accompanying drawing explanation
Fig. 1 is the structural representation of coarse granule ore slurry pump in the utility model embodiment 1.
Fig. 2 is the sectional drawing (section of delivery pipe and connecting tube is only shown, the section of two shaft submersible motor omits) at A-A place in Fig. 1.
Fig. 3 is the sectional drawing (sectional view of orifice plate is identical with up-hole plate) of B-B place up-hole plate in Fig. 1.
Fig. 4 is the structural representation of coarse granule ore slurry pump in the utility model embodiment 2.
Fig. 5 is the sectional drawing (section of delivery pipe and connecting tube is only shown, the section of two shaft submersible motor omits) at D-D place in Fig. 4.
Fig. 6 is the sectional drawing of C-C place orifice plate in Fig. 4.
Fig. 7 is the sectional drawing of E-E place up-hole plate in Fig. 4.
Marginal data
1, suction flange; 2, lower pump body; 3, lower impeller; 4, lower stator; 5, orifice plate; 6, connecting tube; 7, two shaft submersible motor; 8, up-hole plate; 9, upper pump casing; 10, upper impeller; 11, upper stator; 12, outlet(discharge) flange; 13, delivery pipe; 14, upper pod apertures; 15, lower pod apertures; 16, center hole.
Embodiment
For the ease of understanding the utility model, hereafter will do to describe more comprehensively, meticulously to the utility model in conjunction with Figure of description and preferred embodiment, but protection domain of the present utility model is not limited to following specific embodiment.
It should be noted that, when a certain element is described on " be fixed on or be connected to " another element, it can be directly fix or be connected on another element, also can be indirectly fixed by other intermediate connectors or be connected on another element.
Unless otherwise defined, hereinafter used all technical terms are identical with the implication that those skilled in the art understand usually.The object of technical term used herein just in order to describe specific embodiment is not be intended to limit protection domain of the present utility model.
In deepsea mining system, the deep-sea metallic mineral resources of the seabed collecting machine structure collection of the depth of water 2000 ~ 5000m is (as oceanic multi-metal nodule, cobalt bearing crust and Polymetallic sulphide etc.) through crusher in crushing under water, vertical transport pipeline is adopted to rise on water surface mining dredger by Submerged Motor Pumps again, coarse granule ore grain size after crusher in crushing is maximum reaches 50mm, transfer ore pulp volume concentration about 10% ~ 20%, therefore traditional slurry pump is under water adopted to be difficult to meet this technical requirements, the present embodiment adopts coarse granule ore slurry pump of the present utility model to promote can meet job requirements.
Embodiment 1:
A kind of coarse granule ore slurry pump for underwater operation of the present utility model as shown in FIG. 1 to 3, belong to mixed-flow ore slurry pump type, comprise a upper pump casing 9 of series connection mutually, two shaft submersible motor 7 and a lower pump body 2, impeller 10 and upper stator 11 is provided with in upper pump casing 9, lower impeller 3 and lower stator 4 is provided with in lower pump body 2, the upper and lower axle of two shaft submersible motor 7 connects the upper impeller 10 in upper pump casing 9 and the lower impeller 3 in lower pump body 2 respectively, and drives upper impeller 10 and lower impeller 3 to rotate respectively.According to the requirement of coarse granule ore slurry pump lift in practice, upper pump casing 9 and lower pump body 2 can be first-stage pump body, also can connect for multistage pump body.When adopting the multistage pump housing, between the pump housing at different levels, all pass through Flange joint.Only adopt first-stage pump body in the present embodiment, therefore connect a suction flange 1 in the below of lower pump body 2, above upper pump casing 9, connect an outlet(discharge) flange 12.The weight of the upper stator 11 in the present embodiment and the main bearing pump pressure of lower stator 4, pump and two shaft submersible motor.
The disposed outside of two shaft submersible motors 7 of the present embodiment has delivery pipe 13 and connecting tube 6, and delivery pipe 13 and connecting tube 6 to be centrosymmetric layout (see Fig. 1 and Fig. 2) along the central shaft of two shaft submersible motor 7, delivery pipe 13 is identical with the external shape of connecting tube 6, the closed at both ends of connecting tube 6, delivery pipe 13 is communicated with the outlet end of lower pump body 2 with the entrance point of upper pump casing 9, and the caliber of delivery pipe 13 is arranged to meet following requirement, that is: the caliber of delivery pipe and suction flange 1, the aperture of outlet(discharge) flange 12 is identical, make the mineral slurry flux in delivery pipe 13 equal with the mineral slurry flux in vertical transport pipeline during the work of coarse granule ore slurry pump.This is conducive to coarse granule ore pulp overcurrent and backflow, can solve the coarse granule ore blockage problem of existing pump ring grille passage, makes coarse granule ore pulp keep fluid stable at vertical transport pipeline.The effect of delivery pipe 13 and connecting tube 6 can also bear dynamic load and the moment of flexure of underwater installation and ocean environment, ensures that it is applicable to deepsea mining system operation under dynamic condition under water better.As shown in Figure 3, in the present embodiment, delivery pipe 13 is connected with lower pump body 2 with upper pump casing 9 with orifice plate 5 respectively by up-hole plate 8 with the upper/lower terminal of connecting tube 6, up-hole plate 8 offers pod apertures 14 on, orifice plate 5 offers pod apertures 15, and the upper/lower terminal of delivery pipe 13 is communicated to upper pod apertures 14 and lower pod apertures 15 place that up-hole plate 8 and orifice plate 5 are offered respectively.In addition, delivery pipe 13 and connecting tube 6 have certain interval with the shell of two shaft submersible motor 7.
In the present embodiment, the upper impeller 10 in upper pump casing 9 and the lower impeller 3 in the lower pump body 2 all mode of being centrosymmetric are arranged on the upper and lower axle of two shaft submersible motor 7, and meet the following conditions:
When impeller 10 and lower impeller 3 are operated, the waterpower axial force that two shaft submersible motor 7 produces is cancelled out each other;
Make the central axes of the central axis of impeller 10 and lower impeller 3 and two shaft submersible motor 7;
The central axis of impeller 10 and lower impeller 3 is overlapped with the center line of outlet(discharge) flange 12 and suction flange 1.
In the present embodiment, the working principle of coarse granule ore slurry pump is as follows: before startup, first coarse granule ore slurry pump being connected on vertical transport pipeline is suspended under water, clear water enters delivery pipe 13 by suction flange 1, lower impeller 3, lower stator 4, orifice plate 5, then enters vertical transport pipeline by up-hole plate 8, upper impeller 10, upper stator 11, outlet(discharge) flange 12; Then start two shaft submersible motor 7, two shaft submersible motor 7 drives the upper impeller 10 in upper pump casing 9 and the lower impeller 3 in lower pump body 2 to rotate; During pump running, the coarse granule ore pulp at suction flange 1 place is flow in delivery pipe 13 by lower impeller 3, lower stator 4, orifice plate 5, then enters vertical pipe by up-hole plate 8, upper impeller 10, upper stator 11, outlet(discharge) flange 12; By the present embodiment said structure, the mineral slurry flux in delivery pipe 13 is equal with concentration with the mineral slurry flux in vertical transport pipeline with pulp concentration, to guarantee the stable of course of conveying fluidised form; In addition, due to the asymmetrical arrangement of upper pump casing in the present embodiment 9 and lower pump body 2, the axial vibrations of coarse granule ore slurry pump is decreased; After pump stops, close two shaft submersible motor 7, ore pulp successively by outlet(discharge) flange 12 by upper stator 11, upper impeller 10, up-hole plate 8, delivery pipe 13, orifice plate 5, lower stator 4, lower impeller 3 free settling to suction flange 1, with guarantee coarse granule ore pulp backflow without blocking phenomenon.
Embodiment 2:
A kind of coarse granule ore slurry pump for underwater operation of the present utility model as shown in Figure 4 to 7, belong to mixed-flow ore slurry pump type, comprise a upper pump casing 9 of series connection mutually, two shaft submersible motor 7 and a lower pump body 2, impeller 10 and upper stator 11 is provided with in upper pump casing 9, lower impeller 3 and lower stator 4 is provided with in lower pump body 2, the upper and lower axle of two shaft submersible motor 7 connects the upper impeller 10 in upper pump casing 9 and the lower impeller 3 in lower pump body 2 respectively, and drives upper impeller 10 and lower impeller 3 to rotate respectively.According to the requirement of coarse granule ore slurry pump lift in practice, upper pump casing 9 and lower pump body 2 can be first-stage pump body, also can connect for multistage pump body.When adopting the series connection of the multistage pump housing, between the pump housing at different levels, all pass through Flange joint.Only adopt first-stage pump body in the present embodiment, therefore connect a suction flange 1 in the below of lower pump body 2, above upper pump casing 9, connect an outlet(discharge) flange 12.The weight of the upper stator 11 in the present embodiment and the main bearing pump pressure of lower stator 4, pump and two shaft submersible motor.
The disposed outside of two shaft submersible motors 7 of the present embodiment has delivery pipe 13 and connecting tube 6, and delivery pipe 13 and connecting tube 6 to be centrosymmetric layout (see Fig. 4 and Fig. 5) along the central shaft of two shaft submersible motor 7, delivery pipe 13 is identical with the external shape of connecting tube 6, the closed at both ends of connecting tube 6, delivery pipe 13 is communicated with the outlet end of lower pump body 2 with the entrance point of upper pump casing 9, and the caliber of delivery pipe 13 arranges satisfied following requirement, that is: the caliber of delivery pipe is identical with the aperture of outlet(discharge) flange 12 with suction flange 1, make the mineral slurry flux in delivery pipe equal with the mineral slurry flux in vertical transport pipeline during the work of coarse granule ore slurry pump.This is conducive to coarse granule ore pulp overcurrent and backflow, can solve the coarse granule ore blockage problem of existing pump ring grille passage, makes coarse granule ore pulp at vertical transport pipeline fluid stable.The effect of delivery pipe 13 and connecting tube 6 can also bear dynamic load and the moment of flexure of underwater installation and ocean environment, ensures that it is applicable to deepsea mining system operation under dynamic condition under water better.In the present embodiment, delivery pipe 13 is connected with lower pump body 2 with upper pump casing 9 with orifice plate 5 respectively by up-hole plate 8 with the upper/lower terminal of connecting tube 6, up-hole plate 8 offers pod apertures 14 on, orifice plate 5 offers pod apertures 15, and the upper/lower terminal of delivery pipe 13 is connected respectively to upper pod apertures 14 and lower pod apertures 15 place that up-hole plate 8 and orifice plate 5 are offered.In addition, delivery pipe 13 and connecting tube 6 have certain interval with the shell of two shaft submersible motor 7.
It needs to be noted, as shown in Figure 6 and Figure 7, in the present embodiment, lower pod apertures 15 on orifice plate 5 is opened in the side of its center hole 16, upper pod apertures on up-hole plate 8 14 is opened in the opposite side of its center hole 16, and the projection in the horizontal plane of upper pod apertures 14 and lower pod apertures 15 is arranged axisymmetricly along the central shaft of two shaft submersible motor 7.Delivery pipe 13 and connecting tube 6 all helically formula are coated on the outside of two shaft submersible motor 7.Such vibrational power flow can make ore pulp in delivery pipe 13 course of conveying, produce the effect of spiral escalation, prevents delivery pipe from blocking in conveying coarse granule process.
In the present embodiment, the upper impeller 10 in upper pump casing 9 and the lower impeller 3 in the lower pump body 2 all mode of being centrosymmetric are arranged on the upper and lower axle of two shaft submersible motor 7, and meet the following conditions:
When impeller 10 and lower impeller 3 are operated, the waterpower axial force that two shaft submersible motor 7 produces is cancelled out each other;
Make the central axes of the central axis of impeller 10 and lower impeller 3 and two shaft submersible motor 7;
The central axis of impeller 10 and lower impeller 3 is overlapped with the center line of outlet(discharge) flange 12 and suction flange 1.
In the present embodiment, the working principle of coarse granule ore slurry pump is as follows: before startup, first coarse granule ore slurry pump being connected on vertical transport pipeline is suspended under water, clear water enters delivery pipe 13 by suction flange 1, lower impeller 3, lower stator 4, orifice plate 5, then enters vertical transport pipeline by up-hole plate 8, upper impeller 10, upper stator 11, outlet(discharge) flange 12; Then start two shaft submersible motor 7, two shaft submersible motor 7 drives the upper impeller 10 in upper pump casing 9 and the lower impeller 3 in lower pump body 2 to rotate; During pump running, the coarse granule ore pulp at suction flange 1 place is flow in delivery pipe 13 by lower impeller 3, lower stator 4, orifice plate 5, then enters vertical pipe by up-hole plate 8, upper impeller 10, upper stator 11, outlet(discharge) flange 12; By the present embodiment said structure, the mineral slurry flux in delivery pipe 13 is equal with concentration with the mineral slurry flux in vertical transport pipeline with pulp concentration, to guarantee the stable of course of conveying fluidised form; In addition, due to the asymmetrical arrangement of upper pump casing in the present embodiment 9 and lower pump body 2, the axial vibrations of coarse granule ore slurry pump is decreased; After pump stops, close two shaft submersible motor 7, ore pulp successively by outlet(discharge) flange 12 by upper stator 11, upper impeller 10, up-hole plate 8, delivery pipe 13, orifice plate 5, lower stator 4, lower impeller 3 free settling to suction flange 1, with guarantee coarse granule ore pulp backflow without blocking phenomenon.

Claims (7)

1. the coarse granule ore slurry pump for underwater operation, comprise two shaft submersible motor (7), at least one upper pump casing (9) and at least one lower pump body (2), impeller and stator is equipped with in described upper pump casing (9) and lower pump body (2), described pair of shaft submersible motor (7) upper, lower shaft connects the impeller in described upper pump casing (9) and the impeller in lower pump body (2) respectively, it is characterized in that: the disposed outside of described pair of shaft submersible motor (7) has delivery pipe (13) and connecting tube (6), and the central shaft of the two shaft submersible motor (7) of delivery pipe (13) and connecting tube (6) edge is arranged symmetrically with, described delivery pipe (13) is identical with the size shape of connecting tube (6), the closed at both ends of described connecting tube (6), described delivery pipe (13) and the import of upper pump casing (9) and the outlet of lower pump body (2), the internal diameter of described delivery pipe (13) is equal with the internal diameter of the suction flange (1) that lower pump body (2) below connects, the internal diameter of described delivery pipe (13) is equal with the internal diameter of the outlet(discharge) flange (12) that upper pump casing (9) top connects.
2. the coarse granule ore slurry pump for underwater operation according to claim 1, it is characterized in that: described delivery pipe (13) is connected with lower pump body (2) with upper pump casing (9) with orifice plate (5) respectively by up-hole plate (8) with the upper/lower terminal of connecting tube (6), up-hole plate (8) and orifice plate (5) all only offer a pod apertures, and the upper/lower terminal of delivery pipe (13) communicates with the pod apertures of up-hole plate (8) and orifice plate (5) respectively.
3. the coarse granule ore slurry pump for underwater operation according to claim 2, it is characterized in that: the lower pod apertures (15) on described orifice plate (5) is arranged in the side of its center hole (16), upper pod apertures (14) on described up-hole plate (8) is arranged in the opposite side of its center hole (16), and the projection in the horizontal plane of described upper pod apertures (14) and lower pod apertures (15) is arranged axisymmetricly along the central shaft of two shaft submersible motor (7).
4. the coarse granule ore slurry pump for underwater operation according to claim 1,2 or 3, is characterized in that: described delivery pipe (13) and connecting tube (6) all helically formula are located at the outside of described pair of shaft submersible motor (7).
5. the coarse granule ore slurry pump for underwater operation according to claim 1,2 or 3, it is characterized in that: the upper end shaft of described pair of shaft submersible motor (7) is serially connected with multiple upper pump casing (9), and passes through Flange joint between each upper pump casing (9); The lower end shaft of described pair of shaft submersible motor (7) is serially connected with multiple lower pump body (2), and passes through Flange joint between each lower pump body (2).
6. the coarse granule ore slurry pump for underwater operation according to claim 1,2 or 3, it is characterized in that: the impeller in described upper pump casing (9) is upper impeller (10), impeller in described lower pump body (2) is lower impeller (3), described upper impeller (10) and lower impeller (3) all symmetry are arranged on the upper and lower axle of described pair of shaft submersible motor (7), and at least one of meet the following conditions:
1. make to cancel out each other to the waterpower axial force that two shaft submersible motor (7) produces when impeller (10) and lower impeller (3) running;
2. the central axes of the central axis of impeller (10) and lower impeller (3) and two shaft submersible motor (7) is made;
3. the central axis of impeller (10) and lower impeller (3) is made to overlap with the center line of described suction flange (1);
4. the central axis of impeller (10) and lower impeller (3) is made to overlap with the center line of described outlet(discharge) flange (12).
7. the coarse granule ore slurry pump for underwater operation according to claim 1,2 or 3, is characterized in that: described delivery pipe (13) and connecting tube (6) are provided with certain interval with the shell of described pair of shaft submersible motor (7).
CN201420586935.8U 2014-10-11 2014-10-11 For the coarse granule ore slurry pump of underwater operation Active CN204267309U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104314837A (en) * 2014-10-11 2015-01-28 长沙矿冶研究院有限责任公司 Coarse grained ore pulp pump for underwater operation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104314837A (en) * 2014-10-11 2015-01-28 长沙矿冶研究院有限责任公司 Coarse grained ore pulp pump for underwater operation

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