Low-leakage deep-sea mining transfer machine

Abstract

The low-leakage deep-sea mining ore transfer machine comprises a shell and an impeller set, a blade assembly is arranged at the end, away from a rotating shaft, of an impeller body, the blade assembly comprises a blade body and an elastic piece, and the elastic piece is connected with the blade body and the impeller body; a pressure compensation system is arranged on the rotating shaft and acts on the blade bodies through flow channels in the impeller body. When the impeller body is located at the feed port or the discharge port, the pressure compensation system is not communicated with the flow channel on the impeller body; when the impeller body is located between the feeding port and the discharging port, the elastic pieces press the blade bodies on the inner wall of the shell for sealing, the pressure compensation system is communicated with a flow channel in the impeller body, and the pressure compensation system acts on the blade bodies to press the blade bodies on the inner wall of the shell for sealing. The double-sealing structure of water pressure active attaching sealing of the blade assembly and elastic force jacking sealing of the spring automatically compensates the gap between the blade and the shell, leakage is reduced, and efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of deep-sea mining equipment, and in particular to a low-leakage deep-sea mining ore transfer machine. Background Art

[0002] Polymetallic nodules are mainly found in the surface layer of seabed sediments at 3,000-6,000 meters. It is preliminarily estimated that there are about 70 billion tons of them with mining value. Ore collection and lifting are the most core technologies and components in the mining process. At present, the main methods for mining polymetallic nodules at home and abroad include continuous chain bucket method, mortar pump hydraulic pipeline lifting method and air lifting method.

[0003] At present, most of the polymetallic nuclei collected by deep-sea mining equipment are separated in a separation cabin and then transferred to a material trough through a ore transfer machine. The outlet of the separation cabin is a suction negative pressure, and the material trough is a spray positive pressure. The pressurized conveying pump uses water pressure to transport the ore that falls into the material trough along the conveying pipeline to the destination.

[0004] Deep-sea mining is mostly hydraulic mining. Under the condition of positive and negative high pressure difference between inlet and outlet, it is necessary to minimize pressure leakage to fully utilize the hydraulic power. Conventional impeller conveying devices have poor sealing performance and large pressure leakage, which needs to be improved. Summary of the invention

[0005] In view of the defects in the prior art, the object of the present invention is to provide a low-leakage deep-sea mining ore transfer machine.

[0006] A low-leakage deep-sea mining converter provided by the present invention comprises a casing and an impeller group, wherein the impeller group is arranged inside the casing, the casing comprises a feed port and a discharge port, and there is a pressure difference between the discharge port and the feed port; the impeller group comprises a rotating shaft and an impeller body, and the impeller body is provided with a plurality of groups at intervals along the circumference of the rotating shaft, and a blade assembly is provided at one end of the impeller body away from the rotating shaft, and the blade assembly comprises a blade body and an elastic member, and the elastic member connects the blade body and the impeller body; a pressure compensation system is provided on the rotating shaft, and the pressure compensation system acts on the blade body through a flow channel on the impeller body; when the impeller body is located at the feed port or the discharge port, the pressure compensation system is not connected with the flow channel on the impeller body; when the impeller body is located between the feed port and the discharge port, the elastic member presses the blade body against the inner wall of the casing to seal it, and the pressure compensation system is connected with the flow channel on the impeller body, and the pressure compensation system acts on the blade body to press the blade body against the inner wall of the casing to seal it.

[0007] Preferably, a groove structure is provided at one end of the impeller body away from the rotating shaft, the blade body is partially embedded and installed in the groove structure, the elastic member connects the blade body and the bottom wall of the groove, and the expansion and contraction direction of the elastic member is perpendicular to the axial direction of the rotating shaft; the flow channel on the impeller body extends to the bottom of the groove structure.

[0008] Preferably, the blade assembly further comprises a sealing ring, which is arranged at the opening of the groove structure and dynamically seals the groove structure with the blade body.

[0009] Preferably, the pressure compensation system comprises a distribution shaft, a distribution plate and a pressure compensation pump, and the distribution shaft, the distribution plate and the rotating shaft are coaxially arranged;

[0010] The distribution disc is provided with a distribution channel, and when the impeller body is located between the feed port and the discharge port, the distribution channel is connected with the channel on the impeller body; the pressure compensation pump supplies liquid to the distribution channel of the distribution disc through the distribution axis.

[0011] Preferably, the trajectory of the distribution flow channel on the distribution disk coincides with the movement trajectory of the impeller body, and two groups of the distribution flow channels are symmetrically arranged on the distribution disk.

[0012] Preferably, a floating ring seal is provided between the impeller assembly and the inner wall of the casing.

[0013] Preferably, an elastic baffle is provided at the feed inlet of the shell, and the elastic baffle is located at the impeller escape side of the feed inlet.

[0014] Preferably, the impeller groups are arranged in multiple groups along the axial direction of the rotating shaft.

[0015] Preferably, the blade bodies in the multiple groups of impeller assemblies are progressively arranged with a phase difference of 15 degrees along the axial direction of the rotating shaft.

[0016] Preferably, four groups of impeller assemblies are provided, and any group of the impeller assemblies includes six impeller bodies arranged at equal intervals.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention adopts a double sealing structure of active water pressure sealing and spring force sealing of the blade assembly, which automatically compensates for the gap between the blade and the shell, reduces leakage, solves the problem of transfer and transportation of minerals under high pressure difference between inlet and outlet, helps to solve the problem of insufficient hydraulic utilization, and thus helps to improve efficiency.

[0019] 2. The present invention adopts the structure of the distribution plate, which can make the blade assembly have compensation pressure when it turns to the sealing area, and no compensation pressure when it turns to the open non-sealed area, thereby solving the problem of regional compensation sealing.

[0020] 3. The present invention solves the problem of axial leakage between impellers through the floating ring seal structure, thereby improving the hydraulic efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0022] Figure 1 This is a schematic diagram of the overall structure of the ore transfer machine mainly embodied in the present invention;

[0023] Figure 2 This is an axial cross-sectional view of the overall structure of the ore transfer machine mainly embodied in the present invention;

[0024] Figure 3 This is a radial cross-sectional view of the overall structure of the ore transfer machine mainly embodied in the present invention;

[0025] Figure 4 This is a schematic diagram of a blade assembly mainly embodied in the present invention;

[0026] Figure 5 This is an assembly diagram of multiple impeller groups mainly embodied in the present invention;

[0027] Figure 6 This is a blade arrangement diagram of multiple impeller groups mainly embodied in the present invention;

[0028] Figure 7 It is a schematic diagram of step 1 in the transfer process of the present invention;

[0029] Figure 8 It is a schematic diagram of step 2 in the transfer process of the present invention;

[0030] Fig. 9 The present invention mainly embodies the schematic diagram of step three in the transfer process;

[0031] Fig.10 The present invention mainly embodies the schematic diagram of step 4 in the transfer process;

[0032] Fig.11 It is a schematic diagram of step five in the transfer process of the present invention.

[0033] As shown in the figure:

[0034] Shell 1 Floating ring seal 4

[0035] Impeller group 2 Distribution shaft 5

[0036] Blade assembly 3 Distribution plate 6

[0037] Blade body 3.1 Elastic baffle 7

[0038] Spring 3.2 Pressure compensation pump 8

[0039] Sealing ring 3.3 Motor package 9 DETAILED DESCRIPTION

[0040] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0041] like Figure 1 , Figure 2 , Figure 3 as well as Figure 4 As shown, a low leakage deep sea mining ore transfer machine provided by the present invention comprises a housing 1 and an impeller assembly 2, wherein the impeller assembly 2 is arranged inside the housing 1, and the housing 1 comprises a feed port and a discharge port, and there is a pressure difference between the discharge port and the feed port. The impeller assembly 2 comprises a rotating shaft and an impeller body, and a plurality of impeller bodies are arranged at intervals along the circumference of the rotating shaft.

[0042] A blade assembly 3 is arranged at one end of the impeller body away from the rotating shaft, and the blade assembly 3 includes a blade body 3.1 and an elastic member, and the elastic member connects the blade body 3.1 and the impeller body; a pressure compensation system is arranged on the rotating shaft, and the pressure compensation system acts on the blade body 3.1 through the flow channel on the impeller body; when the impeller body is located at the feed port or the discharge port, the pressure compensation system is not connected to the flow channel on the impeller body.

[0043] When the impeller body is located between the feed port and the discharge port, the elastic member presses the blade body 3.1 against the inner wall of the housing 1 to seal it, and the pressure compensation system is connected to the flow channel on the impeller body. The pressure compensation system acts on the blade body 3.1 to press the blade body 3.1 against the inner wall of the housing 1 to seal it. It should be noted that the blade body 3.1 and the inner wall of the housing 1 are dynamic seals. . .

[0044] In the present application, the blade body 3.1 adopts the dual sealing technology of active water pressure close sealing and spring 3.2 elastic force close sealing, which automatically compensates the gap between the blade and the housing 1, including the gap caused by wear, processing error, deformation and assembly, greatly reduces the gap leakage and improves the hydraulic efficiency. The present application adopts the distribution plate 6 technology, and the dynamic and static rings of the distribution plate 6 distribute the liquid to different channels at different angles, so that the blade has a compensating water pressure seal in the cylindrical sealing area and no compensating pressure seal at the opening, realizing selective regional compensation seal.

[0045] Specifically, the shell 1 is a cavity structure and has a certain structural strength. It can withstand positive and negative high pressure differences and has a certain wear resistance. The blade body 3.1 can slide smoothly and closely on its cylindrical wall. The shell 1 serves as the installation base of the impeller assembly 2, with the feed port located at the upper part of the shell 1 and the discharge port located at the lower part of the shell 1. When in use, the feed port of the shell 1 is connected to the discharge port of the separation cabin, which is a suction negative pressure. The discharge port of the shell 1 is connected to the trough, which is a spray positive pressure. The pressurized delivery pump uses water pressure to transport the ore that falls into the trough along the delivery pipeline to the destination.

[0046] More specifically, a groove structure is provided at one end of the impeller body away from the rotating shaft, the blade body 3.1 is partially embedded and installed in the groove structure, the elastic member connects the blade body 3.1 and the bottom wall of the groove, and the expansion and contraction direction of the elastic member is perpendicular to the axial direction of the rotating shaft. The elastic member of the present application can be a compression spring 3.2, which can provide a compression force for sealing the blade body 3.1 with the inner wall of the housing 1 on the one hand, and can provide a certain pre-tightening force for the blade body 3.1 when there is no compensation pressure on the other hand.

[0047] The pressure compensation system includes a distribution shaft 5, a distribution disk 6 and a pressure compensation pump 8. The distribution shaft 5, the distribution disk 6 and the rotating shaft are coaxially arranged. A distribution flow channel is arranged on the distribution disk 6. When the impeller body is located between the feed port and the discharge port, the distribution flow channel is connected with the flow channel on the impeller body. The pressure compensation pump 8 supplies liquid to the distribution flow channel of the distribution disk 6 through the distribution shaft 5. The trajectory of the distribution flow channel on the distribution disk 6 coincides with the movement trajectory of the impeller body, and two groups of distribution flow channels are symmetrically arranged on the distribution disk 6. Among them, the distribution shaft 5 and the housing 1 remain fixed and do not rotate, and the pressure compensation pump 8 and the distribution disk 6 are connected to form a compensation pressure chamber in the hollow part of the impeller group 2.

[0048] The flow channel on the impeller body extends to the bottom of the groove structure. The blade assembly 3 also includes a sealing ring 3.3, which is arranged at the opening of the groove structure and dynamically seals the groove structure with the blade body 3.1. The sealing ring 3.3 can prevent leakage of the liquid compensating the pressure.

[0049] A floating ring seal 4 is provided between the impeller assembly 2 and the inner wall of the housing 1. The floating ring seal 4 is arranged in a full circle on the impeller assembly 2, close to the cylindrical wall of the housing 1, and is a floating hydraulic seal for compensating pressure. The pressure compensation pump 8 provides compensation pressure for the blade assembly 3 compensation seal and the floating ring seal 4. The impeller assembly 2 also includes a motor package 9, which is used for underwater operation and provides power for the rotation of the impeller assembly 2, and has a built-in motor and reducer.

[0050] like Figure 5 and Figure 6As shown, in a preferred embodiment of the present application: multiple groups of impeller groups 2 are arranged along the axial direction of the rotating shaft. The blade bodies 3.1 in the multiple groups of impeller groups 2 are arranged progressively with a phase difference of 15 degrees along the axial direction of the rotating shaft, so that the tuberculosis transfer output is more uniform and continuous. A specific implementation method is: four groups of impeller groups 2 are arranged, and any group of impeller groups 2 includes six impeller bodies arranged at equal intervals. The present application adopts a V-type floating ring seal 4 to reduce the axial leakage of the liquid between the two impellers.

[0051] In a preferred embodiment, an elastic baffle 7 is provided at the feed inlet of the housing 1, and the elastic baffle 7 is located at the impeller exit side of the feed inlet. When the mineral accumulation height is higher than the blade tip height, the elastic baffle 7 can bounce and smooth the protruding ore.

[0052] like Figure 7 , Figure 8 , Fig. 9 , Fig.10 as well as Fig.11 As shown, during the transfer process:

[0053] Step 1: The impeller rotates clockwise, and the ore falls into the impeller OAB cavity from above. At this time, the OAB cavity is in the opening area and connected to the negative pressure area. At this time, the distribution plate 6 is disconnected from the impeller holes OA and OB, and there is no compensation pressure at the blades A and B, and they are only tightened by the preload force of the spring 3.2.

[0054] Step 2: The impeller continues to rotate, and blade B enters the sealing area, while blade A is still in the opening area, and the OAB cavity is connected to the negative pressure area. At this time, the channel OB is connected, and blade B has compensation pressure, while the channel OA is not connected and has no compensation pressure. Blade B is tightly sealed by the combined force of the preload force of spring 3.2 and the compensation pressure, while blade A is only tightly sealed by the preload force of spring 3.2.

[0055] Step 3: The impeller continues to rotate, and blades A and B are in the tight sealing area, and the OAB cavity is subjected to positive and negative pressure differences. At this time, the channels OA and OB are both connected, there is compensation pressure, and blades A and B are tightly sealed by the combined force of the spring 3.2 preload and the compensation pressure.

[0056] Step 4: The impeller continues to rotate. At this time, blade A is in the sealing area, blade B turns to the opening area, the ore begins to fall, and the OAB cavity is connected to the positive pressure area. At this time, the channel OA is connected and there is compensation pressure, and the channel OB is disconnected and there is no compensation pressure. Blade A is tightly sealed by the combined force of the preload force of spring 3.2 and the compensation pressure, and blade B is only tightly sealed by the preload force of spring 3.2.

[0057] Step 5: The impeller continues to rotate, and blades A and B are both turned into the opening area, the nodules fall into the trough, and the OAB cavity is connected to the positive pressure area. At this time, the channels OA and OB are disconnected, there is no compensation pressure, and blades A and B are only tightened by the spring 3.2 preload.

[0058] The subsequent ore is blown into the conveying pipeline by a pressurized conveying pump and transported along the pipeline to the destination.

[0059] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0060] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A low leakage deep sea mining ore transfer machine, characterized in that: It comprises a housing (1) and an impeller assembly (2), wherein the impeller assembly (2) is arranged inside the housing (1), and the housing (1) comprises a feed inlet and a discharge outlet, and there is a pressure difference between the discharge outlet and the feed inlet; The impeller assembly (2) comprises a rotating shaft and an impeller body, wherein a plurality of impeller bodies are arranged at intervals along the circumference of the rotating shaft, and a blade assembly (3) is arranged at one end of the impeller body away from the rotating shaft, wherein the blade assembly (3) comprises a blade body (3.1) and an elastic member, wherein the elastic member connects the blade body (3.1) and the impeller body; The rotating shaft is provided with a pressure compensation system, and the pressure compensation system acts on the blade body (3.1) through the flow channel on the impeller body; When the impeller body is located at the feed inlet or the discharge outlet, the pressure compensation system is not connected to the flow channel on the impeller body; When the impeller body is located between the feed inlet and the discharge outlet, the elastic member presses the blade body (3.1) against the inner wall of the casing (1) to seal it, and the pressure compensation system is connected to the flow channel on the impeller body. The pressure compensation system acts on the blade body (3.1) to press the blade body (3.1) against the inner wall of the casing (1) to seal it.

2. The low leakage deep sea mining ore transfer machine according to claim 1, characterized in that: A groove structure is provided at one end of the impeller body away from the rotating shaft, the blade body (3.1) is partially embedded and installed in the groove structure, the elastic member connects the blade body (3.1) and the bottom wall of the groove, and the elastic direction of the elastic member is perpendicular to the axial direction of the rotating shaft; The flow channel on the impeller body extends to the bottom of the groove structure.

3. The low leakage deep sea mining ore transfer machine as claimed in claim 2, characterized in that: The blade assembly (3) also comprises a sealing ring (3.3), which is arranged at the opening of the groove structure, and the sealing ring (3.3) dynamically seals the groove structure and the blade body (3.1).

4. The low leakage deep sea mining ore transfer machine according to claim 1, characterized in that: The pressure compensation system comprises a distribution shaft (5), a distribution plate (6) and a pressure compensation pump (8), wherein the distribution shaft (5), the distribution plate (6) and the rotating shaft are coaxially arranged; The distribution plate (6) is provided with a distribution channel, and when the impeller body is located between the feed inlet and the discharge outlet, the distribution channel is connected with the channel on the impeller body; The pressure compensating pump (8) supplies liquid to the distribution channel of the distribution disk (6) through the distribution shaft (5).

5. The low leakage deep sea mining ore transfer machine as claimed in claim 4, characterized in that: The trajectory of the distribution flow channel on the distribution plate (6) coincides with the movement trajectory of the impeller body, and two groups of the distribution flow channels are symmetrically arranged on the distribution plate (6).

6. The low leakage deep sea mining ore transfer machine according to claim 1, characterized in that: A floating ring seal (4) is provided between the impeller assembly (2) and the inner wall of the casing (1).

7. The low leakage deep sea mining ore transfer machine according to claim 1, characterized in that: An elastic baffle (7) is provided at the feed inlet of the housing (1), and the elastic baffle (7) is located on the impeller escape side of the feed inlet.

8. The low leakage deep sea mining ore transfer machine according to claim 1, characterized in that: The impeller groups (2) are arranged in multiple groups along the axial direction of the rotating shaft.

9. The low leakage deep sea mining ore transfer machine as claimed in claim 8, characterized in that: The blade bodies (3.1) in the plurality of groups of impeller assemblies (2) are arranged progressively with a phase difference of 15 degrees along the axial direction of the rotating shaft.

10. The low leakage deep sea mining ore transfer machine according to claim 1, characterized in that: The impeller groups (2) are arranged in four groups, and any group of the impeller groups (2) comprises six impeller bodies arranged at equal intervals.

Images