Intelligent medium adding device for dense medium coal preparation plant

Abstract

The invention discloses a dense medium coal preparation plant intelligent medium adding device which comprises a medium transfer mechanism, a heavy liquid preparation mechanism and a heavy liquid output mechanism, the medium transfer mechanism comprises a horizontal transfer mechanism, a lifting hook, a weighing part and an electromagnetic chuck assembly, the lifting hook can move up and down, the weighing part is connected to the lifting hook, and the electromagnetic chuck assembly is connected to the weighing part. The electromagnetic chuck assembly is connected below the weighing part and can suck medium powder, the heavy liquid preparation mechanism comprises a concentrated medium barrel, a water supplementing pipeline and an air blowing pipeline, the top of the concentrated medium barrel is open and suitable for receiving the medium powder sucked by the electromagnetic chuck assembly, the water supplementing pipeline is communicated with the top of the concentrated medium barrel, and the air blowing pipeline is connected to the side portion of the concentrated medium barrel; and the heavy liquid output mechanism is communicated with the bottom of the concentrated medium barrel and is suitable for outputting heavy liquid to the production system. According to the device, medium powder can be automatically added, labor is saved, the working efficiency is improved, meanwhile, the adding amount of the medium powder is accurately controlled, the density of heavy liquid is accurately controlled, and the product quality is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heavy medium coal preparation, and particularly relates to an intelligent medium adding device for a heavy medium coal preparation plant. BACKGROUND

[0002] Coal washing and processing is the first link of clean and efficient utilization of coal. In a heavy medium coal preparation plant, gangue and sundries in coal are removed, and different particle sizes, ash contents and calorific values of commercial coal are produced according to the properties and use direction of the coal.

[0003] In the separation process of the heavy medium coal preparation plant, a core index is the separation density, which is adjusted by adding medium powder. The medium powder is magnetite powder (ferric oxide) which has magnetism and is easy to recycle and reuse.

[0004] Currently, the medium powder is manually added to water for stirring to form heavy liquid of a target density, and then the heavy liquid is added to a production system. This method has low control precision of the heavy liquid density and low medium adding efficiency. SUMMARY

[0005] In view of the defects in the prior art, the present application provides an intelligent medium adding device for a heavy medium coal preparation plant. The device can automatically add medium powder, save labor, improve work efficiency, accurately control the amount of the medium powder added, accurately control the density of the heavy liquid, and improve product quality.

[0006] An intelligent medium adding device for a heavy medium coal preparation plant, comprising a medium transfer mechanism, a heavy liquid preparation mechanism and a heavy liquid output mechanism,

[0007] The medium transfer mechanism comprises a horizontal transfer mechanism, a lifting hook, a weighing member and an electromagnetic chuck assembly. The horizontal transfer mechanism can drive the lifting hook to move forward, backward, leftward and rightward. The lifting hook can move up and down. The weighing member is connected to the lifting hook. The electromagnetic chuck assembly is connected below the weighing member and can suck the medium powder.

[0008] The heavy liquid preparation mechanism comprises a thick medium barrel, a water supplement pipeline and an air blowing pipeline. The thick medium barrel is open at the top and is adapted to receive the medium powder sucked by the electromagnetic chuck assembly. The water supplement pipeline is connected to the top of the thick medium barrel. The air blowing pipeline is connected to the side of the thick medium barrel.

[0009] The heavy liquid output mechanism is connected to the bottom of the thick medium barrel and is adapted to output the heavy liquid to a production system.

[0010] Preferably, the electromagnetic chuck assembly comprises a fixed plate, a containing cylinder and an electromagnetic chuck. The fixed plate is connected to the weighing member by a connecting rope. The containing cylinder is fixed to the bottom wall of the fixed plate. The electromagnetic chuck is fixed in the containing cylinder.

[0011] The first electric cylinder is installed on the left wall of the fixed plate, a second electric cylinder is connected to the output shaft of the first electric cylinder, and a sealing plate is connected to the output shaft of the second electric cylinder, the sealing plate seals the bottom end of the containing cylinder, the first electric cylinder can drive the second electric cylinder to move up and down, and the second electric cylinder can drive the sealing plate to move to the left side of the containing cylinder,

[0012] A discharge hole is formed in the sealing plate, a silica gel cylinder is fixed in the discharge hole, the fixed plate has a containing cavity, a third electric cylinder is arranged in the containing cavity, a through hole is formed in the electromagnetic chuck, a lifting shaft is connected to the output shaft of the third electric cylinder, the lifting shaft passes through the through hole and the silica gel cylinder and is in interference fit with the silica gel cylinder,

[0013] An annular groove is formed in the side wall of the lifting shaft, and the depth of the annular groove gradually decreases from top to bottom.

[0014] Preferably, the bottom end of the lifting shaft is arc-shaped.

[0015] Preferably, the top wall of the sealing plate is inclined downward as a whole from the direction of the discharge hole to the discharge hole.

[0016] Preferably, the weighing member is an electronic suspension scale.

[0017] Preferably, a water replenishing valve is arranged on the water replenishing pipeline.

[0018] Preferably, an air blowing valve is arranged on the air blowing pipeline.

[0019] Preferably, the heavy liquid output mechanism comprises a conveying pipeline and a centrifugal pump, the centrifugal pump is connected in the conveying pipeline, and the conveying pipeline is connected with the concentrated medium barrel.

[0020] Preferably, a liquid level meter is further arranged on the concentrated medium barrel, and the liquid level meter can detect the water level in the concentrated medium barrel.

[0021] Preferably, a D laser radar is further arranged, and the D laser radar is suitable for identifying the medium pile and suitable for controlling the action of the medium transfer mechanism according to the medium pile coordinates.

[0022] The beneficial effects of the present application are embodied in that the technical solution comprises a medium transfer mechanism, a heavy liquid preparation mechanism and a heavy liquid output mechanism. When working, water is added to the concentrated medium barrel through the water replenishing pipeline to reach the target water level, and the air blowing pipeline is opened to blow high-pressure air into the concentrated medium barrel. Then the medium transfer mechanism moves, so that the electromagnetic chuck assembly moves to the medium pile to suck the medium powder and moves to above the concentrated medium barrel, the medium powder falls into the concentrated medium barrel, and the medium powder is added to the concentrated medium barrel for many times, the medium powder is mixed with the water in the concentrated medium barrel under the action of high-pressure air to form heavy liquid, and finally the heavy liquid is transported to the production system through the heavy liquid output mechanism.

[0023] The technical scheme adopts mechanical medium adding, compared with manual medium adding, labor is saved, and operation efficiency is improved; meanwhile, the medium powder adding amount is controlled by the weighing member, and the precision is also high. In addition, the medium powder is sucked by the electromagnetic suction disc assembly by using the magnetism of the medium powder, compared with the grab bucket grabbing, the problems such as unstable grabbing amount caused by the tilt of the grab bucket and the stirring of the crane rope can be avoided. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme in the specific embodiments or prior art of the present application, the drawings needed in the specific embodiment or prior art description will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual proportion.

[0025] Fig. 1 It is a schematic diagram of the overall structure of the present application.

[0026] Fig. 2 It is a rear view of the electromagnetic suction disc assembly in the present application.

[0027] In the drawings, 1 is a medium transfer mechanism, 2 is a heavy liquid preparation mechanism, 3 is a heavy liquid output mechanism, 4 is a liquid level meter, 5 is a 3D laser radar,

[0028] 11 is a support frame, 12 is a cross beam, 13 is a lifting hook, 14 is a weighing member, 15 is an electromagnetic suction disc assembly,

[0029] 21 is a concentrated medium barrel, 22 is a water replenishing pipeline, 23 is a water replenishing valve, 24 is an air blowing pipeline, 25 is an air blowing valve,

[0030] 31 is a conveying pipeline, 32 is a centrifugal pump,

[0031] 151 is a fixed plate, 152 is a containing cylinder, 153 is a first electric cylinder, 154 is a second electric cylinder, 155 is a sealing plate, 156 is an electromagnetic suction disc, 157 is a containing cavity, 158 is a third electric cylinder, 159 is a lifting shaft, 160 is a silica gel cylinder, and 161 is an annular groove. DETAILED DESCRIPTION

[0032] The embodiments of the technical scheme of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical scheme of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0033] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the present application should be understood as the usual meanings understood by the skilled person in the field to which the present application belongs.

[0034] EMBODIMENT

[0035] As Figs. 1-2 shown in the embodiment, an intelligent medium adding device for a dense medium coal preparation plant is provided, which comprises a medium transfer mechanism 1, a heavy liquid preparation mechanism 2 and a heavy liquid output mechanism 3,

[0036] The medium transfer mechanism 1 comprises a horizontal transfer mechanism, a lifting hook 13, a weighing member 14 and an electromagnetic suction disc assembly 15. The horizontal transfer mechanism can drive the lifting hook 13 to move forward and backward and left and right. The lifting hook 13 can move up and down. The weighing member 14 is connected to the lifting hook 13. The electromagnetic suction disc assembly 15 is connected below the weighing member 14 and can suck medium powder.

[0037] The heavy liquid preparation mechanism 2 comprises a thick medium barrel 21, a water supplement pipeline 22 and an air blowing pipeline 24. The thick medium barrel 21 is open at the top and is adapted to receive the medium powder sucked by the electromagnetic suction disc assembly 15. The water supplement pipeline 22 is communicated with the top of the thick medium barrel 21. The air blowing pipeline 24 is connected to the side of the thick medium barrel 21.

[0038] The heavy liquid output mechanism 3 is communicated with the bottom of the thick medium barrel 21 and is adapted to output heavy liquid to a production system.

[0039] Specifically, the horizontal transfer mechanism comprises a support frame 11 and a cross beam 12. The cross beam 12 is installed on the support frame 11 and can move forward and backward. A first driving mechanism is arranged on the support frame 11 to drive the cross beam 12 to move forward and backward. The first driving mechanism can be a linear motion mechanism, which is not described in detail here. The lifting hook 13 is installed on the cross beam 12 and can move left and right. A second driving mechanism is arranged on the cross beam 12 to drive the lifting hook 13 to move left and right. The second driving mechanism can be a linear motion mechanism, which is not described in detail here. In combination with the up and down movement of the lifting hook 13, the weighing member 14 and the electromagnetic suction disc assembly 15 can realize three-dimensional movement, so that the electromagnetic suction disc assembly 15 can reach the target position.

[0040] Specifically, the weighing member 14 is an electronic sling scale. The electronic sling scale is used to weigh the medium powder sucked by the electromagnetic suction disc assembly 15.

[0041] The heavy liquid preparation mechanism 2 comprises the thick medium barrel 21, the water supplement pipeline 22 and the air blowing pipeline 24. The water supplement pipeline 22 is provided with a water supplement valve 23. The air blowing pipeline 24 is provided with an air blowing valve 25.

[0042] The water supplement pipeline 22 adds water into the thick medium barrel 21. The water supplement valve 23 is opened when the water level reaches the detection of the liquid level meter 4 and is closed. The air blowing pipeline 24 is used to blow high-pressure air into the thick medium barrel 21. The air blowing valve 25 is opened when water is added and is closed before the heavy liquid output mechanism 3 is started.

[0043] Specifically, the heavy liquid output mechanism 3 comprises a conveying pipeline 31 and a centrifugal pump 32, the centrifugal pump 32 is connected in the conveying pipeline 31, one end of the conveying pipeline 31 is connected with the thick medium barrel 21, and the other end is communicated with the production system, and the centrifugal pump 32 generates power to convey heavy liquid.

[0044] Specific working process is as follows:

[0045] When working, water is added to the thick medium barrel through the water supplement pipeline 22 to the target water level, at the same time, the air blowing pipeline 23 is opened to blow high-pressure air into the thick medium barrel 21, then the medium transfer mechanism 1 moves, so that the electromagnetic suction cup assembly 15 moves to the medium pile to suck the medium powder, and moves to above the thick medium barrel 21, the medium powder falls into the thick medium barrel 21, so that the medium powder is added to the thick medium barrel 21 for many times, the medium powder is mixed with the water in the thick medium barrel under the action of high-pressure air to form heavy liquid, and finally the heavy liquid is conveyed to the production system through the heavy liquid output mechanism 3.

[0046] The electromagnetic suction cup assembly 15 in the embodiment comprises a fixed plate 151, a containing cylinder 152 and an electromagnetic suction cup 156, the fixed plate 151 is connected with the weighing member 14 through a connecting rope, the containing cylinder 152 is fixed to the bottom wall of the fixed plate 151, and the electromagnetic suction cup 156 is fixed in the containing cylinder 152,

[0047] The first electric cylinder 153 is installed on the left wall of the fixed plate 151, the second electric cylinder 154 is connected on the output shaft of the first electric cylinder 153, the sealing plate 155 is connected on the output shaft of the second electric cylinder 154, the sealing plate 155 seals the bottom end of the containing cylinder 152, the first electric cylinder 153 can drive the second electric cylinder 154 to move up and down, and the second electric cylinder 154 can drive the sealing plate 155 to move to the left side of the containing cylinder 152,

[0048] The sealing plate 155 is provided with a discharging hole, a silica gel cylinder 160 is fixed in the discharging hole, the fixed plate 151 is provided with a containing cavity 157, the containing cavity 157 is provided with a third electric cylinder 158, a through hole is formed in the electromagnetic suction cup 156, a lifting shaft 159 is connected on the output shaft of the third electric cylinder 158, the lifting shaft 159 penetrates through the through hole and the silica gel cylinder 160 and is in interference fit with the silica gel cylinder 160,

[0049] The side wall of the lifting shaft 159 is provided with an annular groove 161, and the depth of the annular groove 161 gradually decreases from top to bottom.

[0050] Only the electromagnetic suction cup 156 is used to suck the medium powder, the quality of the medium powder sucked by the electromagnetic suction cup 156 each time is within a certain range, but the amount of the medium powder sucked each time cannot be accurately controlled, so that the density of the heavy liquid cannot be accurately controlled.

[0051] The electromagnetic chuck assembly 15 provided in the embodiment is used to realize accurate control of the suction amount of medium powder, so as to realize accurate control of the heavy liquid density. The specific working principle is as follows:

[0052] In the initial state, the sealing plate 155 closes the bottom end of the containing cylinder 152, and the lifting shaft 159 is in interference fit with the silica gel cylinder 160 to close the silica gel cylinder 160. When the medium powder is sucked, the output shaft of the first electric cylinder 153 moves downward, driving the second electric cylinder 154 and the sealing plate 155 to move downward, and then the sealing plate 155 is separated from the lifting shaft 159. Then the output shaft of the second electric cylinder 154 moves to the left, driving the sealing plate 155 to move to the left side of the containing cylinder 152, and the output shaft of the first electric cylinder 153 retracts to the top. At this time, the sealing plate 155 is attached to the bottom wall of the fixed plate 151, the lifting hook 13 is lowered, driving the fixed plate 151 and the containing cylinder 152 to descend, and the containing cylinder 152 is inserted into the medium pile. The electromagnetic chuck 156 is powered to suck the medium powder,

[0053] After the suction is completed, the lifting hook 13 is reset, the output shaft of the first electric cylinder 153 descends to the bottom, the output shaft of the second electric cylinder 154 is reset, so that the sealing plate 155 is located directly below the containing cylinder 152, the output shaft of the first electric cylinder 153 rises, driving the sealing plate 155 to rise and close the bottom end of the containing cylinder 152. At this time, the lifting shaft 159 penetrates the silica gel cylinder 160, the electromagnetic chuck 156 is powered off, the medium powder falls onto the sealing plate 155, the weighing device 14 weighs, and the output shaft of the third electric cylinder 158 moves upward, driving the lifting shaft 159 to move upward until the top end of the annular groove 161 is located above the silica gel cylinder 160. At this time, the bottom end of the annular groove 161 is located below the silica gel cylinder 160, and the medium powder is gradually discharged from the silica gel cylinder 160 through the annular groove 161. A set weight value is set on the control system. When the weighing device 14 detects that the weight decreases to the set value, the output shaft of the third electric cylinder 158 rises, so that the bottom end of the annular groove 161 moves into the silica gel cylinder 160 to close the silica gel cylinder 160. At this time, the medium powder in the containing cylinder 152 is the set weight. Then the medium transfer mechanism 1 drives the electromagnetic chuck assembly 15 to move above the thick medium barrel 21, the first electric cylinder 153 descends to discharge the medium powder into the thick medium barrel 21. Thus, the device can realize quantitative suction of medium powder each time, accurate control of the suction amount of medium powder, and accurate control of the heavy liquid density.

[0054] In the embodiment, the bottom end of the lifting shaft 159 is arc-shaped. In the embodiment, the bottom end of the lifting shaft 159 is arc-shaped, which facilitates insertion into the silica gel cylinder 160.

[0055] In the embodiment, the top wall of the sealing plate 155 is inclined downward from the direction of the discharge hole. In the embodiment, the top wall of the sealing plate 155 is inclined, which facilitates discharge of the medium powder.

[0056] The embodiment also comprises a liquid level meter 4 arranged on the thick medium barrel 21, which can detect the water level in the thick medium barrel 21. The liquid level meter 4 in the embodiment is a liquid level transmitter, which can realize the automatic operation of the water supply pipeline 22, further saving manpower and improving operation efficiency.

[0057] The embodiment also comprises a 3D laser radar 5, which is suitable for identifying the medium stack and controlling the action of the medium transfer mechanism 1 according to the medium stack coordinates. The 3D laser radar 5 in the embodiment is suitable for identifying the medium stack and controlling the action of the medium transfer mechanism 1 according to the medium stack coordinates. The 3D laser radar 5 is installed on the support frame 11 and above the cross beam 12, so as to realize panoramic scanning of the medium stack.

[0058] It should be noted that the 3D laser radar 5 performs panoramic scanning on the medium stack to obtain the shape and the highest point coordinates of the medium stack. According to the size of the electromagnetic suction disc assembly 15, the virtual warehouse position segmentation processing is performed on the whole scanned medium library cloud point diagram. The center point coordinates of each virtual warehouse position are sorted according to the elevation. When the coordinates are needed in the control system of the medium transfer mechanism 1, the request command is issued. At this time, the radar system pushes the coordinates in sequence to control the movement of the medium transfer mechanism 1 to suck the medium powder through the electromagnetic suction disc assembly 15. The 3D laser radar 5 can realize the automatic operation of the medium transfer mechanism 1, further saving manpower and improving operation efficiency.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the above embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the specification of the present application.

Claims

1. A smart medium addition device for a heavy media coal preparation plant, characterized in that, It includes a medium transfer mechanism (1), a heavy liquid preparation mechanism (2), and a heavy liquid output mechanism (3). The media transfer mechanism (1) includes a horizontal transfer mechanism, a lifting hook (13), a weighing component (14), and an electromagnetic chuck assembly (15). The horizontal transfer mechanism can drive the lifting hook (13) to move forward, backward, left, and right. The lifting hook (13) can move up and down. The weighing component (14) is connected to the lifting hook (13). The electromagnetic chuck assembly (15) is connected below the weighing component (14) and can pick up media powder. The heavy liquid preparation mechanism (2) includes a concentrate tank (21), a water supply pipe (22), and a blower pipe (24). The top of the concentrate tank (21) is open and suitable for receiving the medium powder sucked up by the electromagnetic chuck assembly (15). The water supply pipe (22) is connected to the top of the concentrate tank (21), and the blower pipe (24) is connected to the side of the concentrate tank (21). The heavy liquid output mechanism (3) is connected to the bottom of the concentrate tank (21) and is adapted to output heavy liquid to the production system.

2. The intelligent medium addition device for a heavy medium coal preparation plant according to claim 1, characterized in that, The electromagnetic chuck assembly (15) includes a fixing plate (151), a receiving cylinder (152), and an electromagnetic chuck (156). The fixing plate (151) is connected to the weighing component (14) via a connecting rope. The receiving cylinder (152) is fixed to the bottom wall of the fixing plate (151), and the electromagnetic chuck (156) is fixed inside the receiving cylinder (152). A first electric cylinder (153) is installed on the left wall of the fixed plate (151). A second electric cylinder (154) is connected to the output shaft of the first electric cylinder (153). A sealing plate (155) is connected to the output shaft of the second electric cylinder (154). The sealing plate (155) seals the bottom end of the receiving cylinder (152). The first electric cylinder (153) can drive the second electric cylinder (154) to move up and down. The second electric cylinder (154) can drive the sealing plate (155) to move to the left side of the receiving cylinder (152). The sealing plate (155) has a discharge hole, and a silicone tube (160) is fixed inside the discharge hole. The fixing plate (151) has a receiving cavity (157), and a third electric cylinder (158) is located inside the receiving cavity (157). A through hole is opened on the electromagnetic chuck (156). A lifting shaft (159) is connected to the output shaft of the third electric cylinder (158). The lifting shaft (159) passes through the through hole and the silicone tube (160) and is interference-fitted with the silicone tube (160). The side wall of the lifting shaft (159) has an annular groove (161), the depth of which gradually decreases from top to bottom.

3. The intelligent medium addition device for a heavy medium coal preparation plant according to claim 2, characterized in that, The bottom end of the lifting shaft (159) is curved.

4. The intelligent medium addition device for a heavy medium coal preparation plant according to claim 2, characterized in that, The top wall of the sealing plate (155) is inclined downward in the direction from the discharge hole to the discharge hole.

5. The intelligent medium addition device for a heavy medium coal preparation plant according to claim 1, characterized in that, The weighing device (14) is an electronic crane scale.

6. The intelligent medium addition device for a heavy medium coal preparation plant according to claim 1, characterized in that, A water supply valve (23) is installed on the water supply pipe (22).

7. The intelligent medium addition device for a heavy medium coal preparation plant according to claim 1, characterized in that, A blower valve (25) is installed on the blower duct (24).

8. The intelligent medium addition device for a heavy medium coal preparation plant according to claim 1, characterized in that, The heavy liquid output mechanism (3) includes a conveying pipe (31) and a centrifugal pump (32), the centrifugal pump (32) being connected in the conveying pipe (31), and the conveying pipe (31) being connected to the concentrate tank (21).

9. The intelligent medium addition device for a heavy medium coal preparation plant according to claim 6, characterized in that, It also includes a level gauge (4), which is installed on the concentrate tank (21) and can detect the water level in the concentrate tank (21).

10. The intelligent medium addition device for a heavy medium coal preparation plant according to claim 1, characterized in that, It also includes a 3D lidar (5), which is adapted to identify media piles and to control the operation of the media transfer mechanism (1) according to the coordinates of the media piles.

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