CN211555317U - Coal floating and sinking experiment system - Google Patents

Abstract

The utility model relates to the technical field of coal floating and sinking experiments, and discloses a coal floating and sinking experiment system, which comprises a floating and sinking separator, a floating coal cleaning and dehydrating device, a floating and sinking coal slime processing device, a drying device, a coal tray and a conveying system for conveying the coal tray; a lifter and a manipulator are arranged on one side of the conveying system, the manipulator transfers the coal in the coal tray to the lifter, and the lifter conveys the coal to the sink-float separator; the floating and sinking coal slime treatment device is communicated with the floating and sinking separator and collects the floating and sinking coal slime; in the conveying direction of the conveying system, the float coal cleaning and dehydrating device is positioned at the downstream of the float-sink separator to clean the float coal and complete dehydration; the drying device dries the float and sink coal slime and float coal; and an online weighing device is also arranged on the conveying system to weigh the dried coal slime and float coal. The coal floating and sinking experiment system can completely replace manpower, realize automation and improve experiment efficiency; meanwhile, the method can collect summarized data and rapidly output an experimental report.

Description

Coal floating and sinking experiment system

Technical Field

The utility model relates to a coal floats and sinks experiment technical field, especially indicates a coal floats and sinks experimental system.

Background

The float-sink experiment is that the coal sample is divided into different density stages by heavy liquids with different densities to determine the yield and characteristics of products at each stage. The raw coal float-sink experiment is carried out to know the selectivity of coal, namely to determine the density composition and the quality characteristics of the coal so as to provide a basis for reasonably utilizing the coal and designing a coal preparation plant. The float-sink experiment of the raw coal and the products thereof can be used for evaluating the coal dressing process effect and guiding the production. At present, the floating and sinking experiment mostly depends on manual work, and the experiment efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model provides a coal floats heavy experimental system has solved the technical problem that experimental efficiency is low among the prior art.

The technical scheme of the utility model is realized like this: a coal floating and sinking experiment system comprises a floating and sinking separator, a floating coal cleaning and dehydrating device, a floating and sinking coal slime processing device, a drying device, a coal tray and a conveying system for conveying the coal tray;

a lifting machine and a mechanical arm are arranged on one side of the conveying system, the mechanical arm transfers coal in the coal tray to the lifting machine, and the lifting machine conveys the coal to the floating-sinking separator;

the floating and sinking coal slime treatment device is communicated with the floating and sinking separator and used for collecting floating and sinking coal slime;

in the conveying direction of the conveying system, the float coal cleaning and dehydrating device is positioned at the downstream of the float-sink separator, and is used for cleaning float coal and completing dehydration;

the drying device is used for drying the float and sink coal slime and float coal;

and an online weighing device is further arranged on the conveying system, and the dried coal slime and float coal are heavy.

Preferably, the sink-float separator comprises

The separation box is internally provided with a separation cavity, and a separation outlet is arranged on the side wall of the separation cavity;

the door body assembly can open or close the separation outlet;

the partition plate is positioned below the separation outlet, can slide into or exit from the separation cavity along the horizontal direction, and can divide the separation cavity into an upper separation cavity communicated with the separation outlet and a lower separation cavity separated from the separation outlet after extending into the separation cavity;

and a scraper that slides on the partition and that can be brought close to or away from the separation outlet;

the separation chamber is provided with a separation cavity, and the separation chamber is provided with a separation cavity; and the outer wall of the separation box is provided with a mesh plate driving assembly for driving the mesh plate to rotate or swing.

As a preferable technical scheme, the separation outlet is located at the upper end of the separation box, a partition plate accommodating groove is formed in the separation box, the partition plate accommodating groove and the separation outlet are respectively located on opposite side walls of the separation box, and the partition plate and the scraper are both located in the partition plate accommodating groove; the baffle holding tank with be fixed with the cylinder connecting plate on the relative lateral wall of separation export, be fixed with scraper blade cylinder and baffle cylinder on the cylinder connecting plate, the scraper blade cylinder with the scraper blade is connected, the baffle cylinder with the baffle is connected.

As a preferable technical scheme, the device further comprises a stirring and cleaning device which comprises

The connecting bracket is fixed on the separation box, and the upper end of the connecting bracket extends to the upper part of the opening of the separation cavity;

the stirring and cleaning nozzle is fixed at the upper end of the connecting bracket through a lifting device;

the stirring cleaning sprayer further comprises an air source control valve and a water source control valve, wherein the air source control valve and the water source control valve are communicated with the input pipe of the stirring cleaning sprayer.

As the preferred technical scheme, the float coal cleaning and dehydrating device comprises a frame, wherein the frame is provided with a cleaning device and a water collecting jacking mechanism, and also comprises a coal disc and a negative pressure dehydrating device;

the coal disk comprises

The upper end of the tray body is provided with an opening, and the bottom wall of the tray body is provided with a water filtering port;

the mesh plate covers the water filtering port;

the cleaning device comprises

The cover body is fixed on the frame, the upper end of the cover body is closed, and the lower end of the cover body is provided with a connecting port matched with the upper end opening of the coal plate;

the cleaning spray head is fixed on the cover body and sprays water into the cover body;

the water collecting jacking mechanism comprises

The upper end of the water collecting hopper is opened and is adaptive to the water filtering port;

the jacking mechanism is connected with the water collecting hopper and drives the water collecting hopper to lift;

the negative pressure dehydration device is communicated with the lower end of the water collecting hopper.

As a preferable technical scheme, the conveying system corresponding to the position of the frame comprises two conveying lines which are arranged in parallel and synchronously convey, a blocking cylinder is arranged between the two conveying lines, and the blocking cylinder is positioned at the downstream of the cover body in the conveying direction of the conveying lines; the conveying line is characterized by further comprising two guide plates, wherein the two guide plates are located on the outer sides of the two conveying lines respectively.

Preferably, the negative pressure dewatering device comprises

The middle part of the pressure tank is communicated with the water collecting hopper, and the lower part of the pressure tank is provided with a valve;

and the vacuum pump is communicated with the top of the pressure tank through a vacuum pipe.

As a preferred technical scheme, the floating and sinking coal slime treatment device comprises a mud-water collector, and the mud-water collector is communicated with the floating and sinking separator through a pipeline; the device also comprises a diaphragm pump and a suction filter, wherein the diaphragm pump pumps the muddy water in the muddy water collector into the suction filter.

As a preferable technical scheme, the coal tray lifting and storing device further comprises two coal tray lifting and storing devices, wherein the two coal tray lifting and storing devices are respectively positioned at the upstream end and the downstream end of the conveying system; the coal disk lifting and storing device comprises

A lifting device, the lifting device comprises

The bottom frame assembly is arranged on the bottom frame,

the conveying chain assembly comprises two synchronously conveyed chain groups, and a lifting channel for accommodating the coal trays is formed between the two chain groups; the chain set comprises

The upper driving shaft is rotatably arranged on the underframe assembly;

the lower driving shaft is rotatably arranged on the underframe assembly and is positioned right below the upper driving shaft;

the two conveying chains are provided with lugs;

two ends of the coal tray bracket are respectively fixed on the hangers of the two conveying chains;

lifting chain wheels are fixed on the upper driving shaft and the lower driving shaft, and the conveying chain is wound on the two lifting chain wheels of the upper driving shaft and the lower driving shaft;

the conveying device corresponds to the lifting channel in position;

and the synchronous lifting self-locking device drives the conveying chain to rotate in one direction.

As a preferred technical scheme, the synchronous lifting self-locking device comprises

A lifting device comprising

The box body is fixed on the underframe assembly;

the long shaft is rotatably arranged on the box body, a first transmission gear is fixed in the middle of the long shaft, and one end of the long shaft is in transmission connection with a driving device;

the short shaft is rotatably arranged on the box body, a second transmission gear is fixed in the middle of the short shaft, and the first transmission gear is meshed with the second transmission gear;

the long shaft and the short shaft are both fixed with a driving chain wheel, the upper driving shaft is fixed with a driving chain wheel, and the driving chain wheel are driven by a driving chain;

and a self-locking device, the self-locking device comprises

At least one ratchet fixed on the major axis or the minor axis;

and the ratchet pawl is arranged on the box body and is matched with the ratchet wheel.

The beneficial effects of the utility model reside in that: the coal floating and sinking experiment system can completely replace manpower, realize automation and improve experiment efficiency; meanwhile, the method can collect summarized data and rapidly output an experimental report.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a schematic structural diagram of a first view angle of a coal heaving experiment system;

FIG. 2 is a schematic structural diagram of a second view angle of the coal heaving experiment system;

FIG. 3 is a schematic diagram of a first perspective view of the sink-float separator;

FIG. 4 is a schematic diagram of a second perspective view of the sink-float separator;

FIG. 5 is a schematic view of a first perspective of the float coal cleaning and dewatering apparatus;

FIG. 6 is a schematic diagram of a second perspective view of the float coal cleaning and dewatering device;

FIG. 7 is a schematic structural view of a coal tray;

FIG. 8 is a schematic view of the structure of the water collecting bucket;

FIG. 9 is a schematic view of a first perspective of the coal panel lift storage unit;

FIG. 10 is a schematic view of a second perspective of the coal panel lift storage unit;

FIG. 11 is a schematic structural view of the synchronous lifting self-locking device;

FIG. 12 is a schematic view of the internal structure of the synchronous lifting self-locking device;

FIG. 13 is a cross-sectional view of the synchronous lift self-locking device;

FIG. 14 is a schematic structural view of a first embodiment of a coal tray support;

FIG. 15 is a schematic structural view of a second embodiment of a coal tray support;

FIG. 16 is a schematic structural view of a third embodiment of a coal tray support;

FIG. 17 is a schematic structural view of a fourth embodiment of a coal panel holder;

fig. 18 is a schematic structural view of a fifth embodiment of the coal panel holder.

In the figure, the position of the upper end of the main shaft,

1-a coal tray lifting and storing device;

2-a coal tray; 21-mesh plate, 22-coal tray bottom seal ring, 23-tray body, 24-coal tray top seal ring, 25-clamping plate;

3-sink-float separator, 31-scraper push rod, 32-scraper cylinder, 33-clapboard cylinder, 34-cylinder connecting plate, 35-clapboard, 36-separating box, 37-scraper, 38-frame, 39-heavy liquid supply pipe, 310-one-way valve, 311-online liquid level meter, 312-mesh plate driving component, 313-mesh plate cylinder, 314-heavy liquid recovery valve, 315-heavy liquid recovery pipe, 316-coal slurry water valve, 317-bent pipe, 318-funnel container, 320-online density meter, 321-coal liquid guide plate, 322-seated bearing, 323-revolving door, 324-revolving shaft, 325-stirring cleaning spray head, 326-auxiliary plate, 327-connecting bracket, 328-guide rod cylinder and 330-revolving shaft, 331-heavy liquid collecting pipe, 332-gate valve, 333-input pipe, 334-mesh plate, 335-gear box, 336-revolving door cylinder;

4-coal disk lifting storage device, 41-underframe assembly, 42-lower driving shaft, 43-lifting chain wheel, 44-transmission chain, 45-coal disk bracket, 47-upper driving shaft, 48-synchronous lifting self-locking device, 410-transmission chain wheel and 411-transmission chain; 451-fixed part, 452-supporting part, 81-lower box body shell, 82-shaft retainer ring, 83-upper box body shell, 84-motor, 85-speed reducer, 86-ratchet wheel, 87-spring, 88-ratchet pawl, 89-ratchet wheel cover, 810-second transmission gear, 811-short shaft, 812-bearing, 813-bolt, 814-driving chain wheel, 815-end cover screw, 816-end cover, 817-long shaft and 818-first transmission gear;

5-an online weighing platform, 6-a diaphragm pump, 7-a heavy liquid chamber, 8-a drying device,

9-float coal cleaning and dewatering device, 92-blocking cylinder, 93-cover body, 94-frame, 95-connecting block, 96-connecting plate, 97-cleaning spray head, 98-water inlet pipe, 910-guide plate, 911-hose, 912-vacuum pipe, 913-vacuum pump, 914-pressure tank, 915-valve, 916-jacking connecting plate, 917-jacking cylinder, 918-flange cylinder, 919-control system, 920-water collecting hopper, 9201-water collecting hopper body, 9202-water collecting hopper sealing ring, 9203-flange plate, 921-hard pipe, 922-valve pipe and 923-water discharging pipe;

10-a jacking device, 11-a high-density heavy liquid barrel, 12-a heavy liquid system, 13-a control center, 14-a heavy liquid collector, 15-a mud and water collector, 16-a conveying system, 17-a lifter, 18-a weighing table and 19-a suction filter.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and the descriptions of these embodiments are used to help understanding the present invention, but do not constitute a limitation of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

A coal floating and sinking experiment system is shown in figures 1 and 2 and comprises a coal tray 2, a conveying system 16 for conveying the coal tray, a floating and sinking separator 3, a floating coal cleaning and dewatering device 9, a floating and sinking coal slime processing device and a drying device 8. As shown in fig. 1 and 2, the conveying system 16 is rectangular, the heavy liquid system 12 is located inside the conveying system 16, the heavy liquid chamber 7 and the high-density heavy liquid bucket are located inside the conveying system 16, and the heavy liquid collector 14 is communicated with the sink-float separator 3 for recovering heavy liquid. The conveying system 16 is also provided with a jacking device 10 at the joint of each device for connecting each station. The experimental system is also provided with a control centre 13.

And one side of the conveying system 16 is provided with a lifting machine 17 and a manipulator 8, and the lifting machine 17 and the manipulator 8 are both positioned at the upstream of the conveying system 16. The manipulator 8 transfers the coal in the coal tray 2 to the elevator 17, and the elevator 17 conveys the coal to the sink-float separator 3.

As shown in fig. 3 and 4, the sink-float separator 3 includes a separation tank 36, a door assembly, a partition 35, and a scraper 37.

The separation box 36 is fixed to the frame 38. the separation box 36 is shown as a square container, but is not limited to a square shape, and may be cylindrical, rectangular, trapezoidal, etc. A separation cavity is arranged in the separation box 36, and a separation outlet is arranged on the side wall of the separation cavity; preferably, the separation outlet is located at the uppermost end of the separation tank 36.

The door assembly can open or close the separation outlet, and as shown in fig. 3, the door assembly includes a rotating shaft 324 rotatably mounted on the separation box 36, and both ends of the rotating shaft 324 are fixedly connected with the separation box 36 through a bearing 322 with a seat. A rotating door 323 is fixed on the rotating shaft 324, the rotating door 323 is fixed with the rotating shaft 324 in a welding mode, and one end of the rotating shaft 324 is in transmission connection with a rotating door driving assembly. As shown in fig. 4, the revolving door driving assembly may employ a gear box 335, one end of the rotating shaft 324 extends into the gear box 335, the rotating shaft 324 is connected to a gear inside the gear box 335, and a rack engaged with the gear is connected to the external revolving door cylinder 336, i.e. the expansion and contraction of the revolving door cylinder 336 controls the opening and closing of the revolving door 323.

A square cone hopper is arranged right below the separation box 36, the square cone hopper is provided with a gate valve 332, preferably a pneumatic gate valve, and automatic control can be achieved. The gate valve 332 is connected with an elbow 317, and a coal slime water valve 316 is arranged on the elbow 317. The gate valve 332 is opened, and the slime water and the gangue which are subjected to the sink-float experiment can be discharged.

A heavy liquid recovery pipe 315 is connected to the lower side of the square cone hopper, a heavy liquid recovery valve 314 is arranged on the heavy liquid recovery pipe 315, and the heavy liquid can be recovered by opening the heavy liquid recovery valve 314. The separator tank 36 is provided at the upper portion thereof with a heavy liquid supply pipe 39, and the heavy liquid supply pipe 39 is provided with a check valve 310. The separation tank 36 is provided with an online liquid level meter 311 and an online density meter 320, and the density of the heavy liquid and the liquid level height of the heavy liquid can be detected in real time.

The partition plate 35 is located at the lower side of the separation outlet, the partition plate 35 can slide into or withdraw from the separation cavity along the horizontal direction, and the partition plate 35 extends into the separation cavity and divides the separation cavity into an upper separation cavity communicated with the separation outlet and a lower separation cavity separated from the separation outlet. The scraper 37 slides on the partition 35 and the scraper 37 can be moved closer to or further away from the separation outlet.

When the partition 35 is located in the middle of the separation tank 36, the partition 35 forms a sliding seal with the separation tank 36, for example, by a packing. Preferably, the separation outlet is located in the upper portion of the separation tank 36 and the partition 35 is also located in the upper portion of the separation tank 36. Be equipped with the baffle holding tank on separator box 36, baffle holding tank and separation export are located two relative lateral walls of separator box 36 respectively, and baffle 35 is located this baffle holding tank, and is the best, and baffle 35 is located the tank bottom of baffle holding tank. The partition plate 35 does not need to form a sealing structure with the separation box 36, and the structure is simple and reasonable.

Further, a cylinder connecting plate 34 is arranged on the side wall of the separation plate accommodating groove 36 opposite to the separation outlet, a scraper cylinder 32 and a separation plate cylinder 33 are fixed on the cylinder connecting plate 34, the scraper cylinder 32 is connected with a scraper 37 through a scraper push rod 31, and the separation plate cylinder 33 is connected with a separation plate 35.

The partition plates 35 and the scraping plates 37 are located in the partition plate accommodating grooves 36, the partition plates 35 are connected with the partition plate air cylinders 33 through bolts, and the scraping plates 37 are connected with the scraping plate air cylinders 32 through the scraping plate push rods 31 and the bolts. The partition cylinder 33 and the scraper cylinder 32 are fixed on the cylinder connecting plate 34 through bolts, and the cylinder connecting plate 34 is fixed on the outer side wall of the upper end of the partition accommodating groove 36 through bolts.

The sink-float separator 3 is further provided with a stirring and cleaning device, which includes a connecting bracket 327 and a stirring and cleaning nozzle 325. The connecting bracket 327 is fixed on the separation box 36 and the upper end of the connecting bracket 327 extends above the opening of the separation chamber; the stirring and cleaning nozzle 325 is fixed at the upper end of the connecting bracket 327 through a lifting device; the lifting device adopts a guide rod cylinder 328, and the stirring cleaning spray head 325 is driven to lift by the guide rod cylinder 328.

And the device also comprises an air source control valve and a water source control valve, wherein the air source control valve and the water source control valve are both communicated with the input pipe 333 of the stirring cleaning spray head 325. That is, the inlet end of the stirring and cleaning nozzle 325 is divided into two paths, one path is connected to the air source through the air source control valve, and the other path is connected to the water source through the water source control valve.

A mesh plate 334 is arranged in the separation cavity, and the middle part of the mesh plate 334 is rotatably arranged on the inner wall of the separation cavity; the outer wall of the separation box 36 is provided with a mesh plate driving assembly 312, the mesh plate driving assembly 312 can be a gear box, one end of a rotating shaft 330 is connected with a gear inside the gear box 312, and a rack meshed with the gear is connected with an external mesh plate cylinder 313. That is, the expansion and contraction of the mesh plate cylinder 313 controls the rotation or oscillation of the mesh plate 334.

Specifically, the mesh plate 334 is fixedly connected with at least one rotating shaft 330, wherein the rotating shaft 330 may be located in the middle of the mesh plate 334 or at the end of the mesh plate 334. Of course, the mesh plate 334 may be installed on the separation box 36 through two rotation shafts 334, and the mesh plate 334 may swing or rotate under the driving of the mesh plate driving assembly 312.

The frame 38 is arranged above the conveying system 16, i.e. below the separation outlet, the conveying system 16 can adopt a conveyer belt, a conveyer chain and the like, and the coal tray 2 is arranged on the conveying system 16 for conveying. On the underside of the separation outlet, a funnel container 318 is provided for receiving the heavy liquid overflowing from the separation tank 36 and filtered off via the coal tray 2. The funnel container 318 is connected to a heavy liquid recovery device via a heavy liquid collection pipe 331, and recovers the filtered heavy liquid.

A coal liquid guide plate 321 is fixed on the outer wall of the separation box 36, and the coal liquid guide plate 321 is positioned at the lower side of the separation outlet and is used for guiding coal and heavy liquid into the coal tray 2 when the coal and the heavy liquid overflow. An auxiliary plate 326 is provided on an upper opening of the separation tank 36, and the auxiliary plate 326 is mounted on a side wall of the separation tank 36 by bolts, and functions to facilitate the pouring of coal.

The floating and sinking coal slime treatment device is communicated with the floating and sinking separator 3, and is used for collecting the coal slime water in the floating and sinking separator 3 and filtering the coal slime water to finish the collection of the coal slime; the floating and sinking coal slime treatment device comprises a mud-water collector 15, and the mud-water collector 15 is communicated with the floating and sinking separator through a pipeline; the device also comprises a diaphragm pump 6 and a suction filter 19, wherein the diaphragm pump 6 pumps the muddy water in the muddy water collector 15 into the suction filter 19. The coal slime is retained on the filter paper, and the filter paper and the coal slime are conveyed into a drying device 8 together for drying to obtain the floating coal slime.

The float coal cleaning and dewatering device 9 is located downstream of the float-sink separator 3 in the conveying direction of the conveying system 16, and cleans and dewaters the float coal.

As shown in fig. 5 and 6, the float coal cleaning and dewatering device 9 comprises a frame 94, the frame 94 is made of aluminum profiles through connecting blocks 95, and the frame 94 is provided with a cleaning device and a water collecting jacking mechanism which are carriers of the water collecting jacking mechanism and the cleaning device. Also comprises a coal disk 2 and a negative pressure dehydration device.

As shown in fig. 7, the coal tray 2 comprises a tray body 23 and a mesh plate 21, the upper end of the tray body 23 is open, and the bottom wall of the tray body 23 is provided with a water filtering opening; the mesh plate 21 covers the water filtering opening. Preferably, the drainage port is formed in the middle of the tray body 23. The mesh plate 21 is fixed on the tray body 23 by means of screws or welding, and preferably, the mesh plate 21 is located inside the tray body 23.

Preferably, a coal tray top sealing ring 24 is arranged on the upper end opening of the tray body 23, and a coal tray bottom sealing ring 22 is arranged on the outer side of the water filtering opening. After the coal disk 2 is butted with the cover body 93 and the water collecting hopper 920, the coal disk top sealing ring 24 and the coal disk bottom sealing ring 22 are beneficial to the butt joint sealing. A sealing groove is formed in the edge above the disc body 23, and a coal disc top sealing ring 24 is adhered in the sealing groove through gluing; also, the coal pan bottom seal 22 is glued into a seal groove at the bottom of the pan body 23 by gluing.

Further, still be equipped with cardboard 25 on the lateral wall of disk body 23, the coal scute 2 of being convenient for is snatched by the equipment of snatching.

The conveyor system 16, which corresponds to the position of the frame 94, comprises two conveyor lines, which are arranged side by side and are conveyed synchronously, and which are roller conveyors or belt conveyors. A blocking cylinder 92 is arranged between the two conveying lines, the blocking cylinder 92 is connected to the frame 94 through bolts, and the blocking cylinder 92 is arranged close to the cover body 93. The blocking cylinder 92 is located downstream of the shroud 93 to precisely position the coal panel 2 as it is conveyed.

Further, the coal disc 2 flow guide device further comprises two guide plates 910, and the two guide plates 910 are fixed on the outer sides of the two conveying lines through bolts to guide the flow of the coal disc 2.

The cleaning device includes a cover 93 and a cleaning nozzle 97. The upper end of the housing 93 is fixed to a connecting plate 96 of the frame 94 by a flange structure. The upper end of the cover body 93 is closed, and the lower end is provided with a connecting port which is matched with the upper end opening of the coal disk; preferably, the cover 93 has a structure with a small top and a large bottom. The cleaning nozzle 97 is fixed on the cover body 93 and sprays water into the cover body 93; the inlet of the upper end of the cleaning nozzle 97 is connected with a water inlet pipe 98, preferably, the cleaning nozzle 97 is a rotary nozzle, and when water passes through the water inlet pipe 98, the cleaning nozzle 97 can be rotated to uniformly spray water.

The water collecting jacking mechanism comprises a water collecting hopper 920 and a jacking mechanism, and under the jacking action of the jacking mechanism, the water collecting hopper 920, the coal tray 2 and the cover body 93 form a sealed cavity for cleaning float coal.

As shown in fig. 8, the water collecting hopper 920 comprises a water collecting hopper body 9201, and an opening at the upper end of the water collecting hopper body 9201 is adapted to a water filtering port; a water collecting bucket sealing ring 9202 is arranged on the upper end surface of the water collecting bucket body 9201, and a flange 9203 is arranged at the lower end.

The jacking mechanism is connected with the water collecting hopper 920 and drives the water collecting hopper 920 to lift; the jacking mechanism comprises a jacking cylinder 917, the bottom of a cylinder body of the jacking cylinder 917 is fixed in the middle of the jacking connecting plate 916 through a bolt, and the jacking connecting plate 916 is connected to the bottom aluminum profile of the frame 94 through a bolt. The piston rod of the jacking cylinder 914 is fixedly connected with the water collecting hopper 920 through the flange cylinder 918. A hole is formed in the middle of the flange cylinder 918, and the hose 911 may pass through the hole. The upper end of the flange cylinder 918 is connected with a flange 9203 of the water collecting hopper 920 through bolts. Therefore, when the jacking cylinder 917 moves, the water collection bucket 920 moves together.

The negative pressure dehydration device is communicated with the lower end of the water collecting hopper 920 to dehydrate the float coal. The negative pressure dehydration device comprises a pressure tank 914 and a vacuum pump 913, the middle part of the pressure tank 914 is communicated with a water collecting hopper 920, specifically, the middle part of the pressure tank 914 is provided with a joint, the outside of the joint is connected with a hose 911 below the water collecting hopper 920, a hard pipe 921 is arranged inside the joint, and the outlet of the hose is downward. The bottom of the pressure tank 914 is a conical head, and the bottom of the conical head is connected with a valve 915 through a valve pipe 922. Vacuum pump 913 communicates with the top of pressure tank 914 through vacuum tube 922. Preferably, a vacuum pump 913 is fixed to the top of the pressure tank 914.

The frame 94 is also provided with a control module 919 and the like, so as to realize the automatic control of the equipment.

In the cleaning and dewatering state, the jacking cylinder 917 extrudes the water collecting hopper 920, the coal tray 2 and the cover 93 into a closed cavity, and at the moment, the cleaning nozzle 97 on the cover 93 sprays water to clean the float coal. Because the mesh plate 23 is arranged at the bottom of the coal tray 2, water can leak into the water collecting hopper 920. The valve 915 is opened, and the water in the water collecting hopper 920 flows into the pressure tank 914 through the hose 911 and is directly discharged, so that the float coal is cleaned.

After the float coal is cleaned, the water collecting jacking mechanism is still in a jacking state, the valve 914 is closed, the vacuum pump 913 is started, the water soaked float coal can quickly drain water to the pressure tank 914 under the action of gravity and vacuum, and after a period of time, the vacuum pump 913 stops working; the valve 915 is opened to discharge the dehydrated water, and the dehydration is completed.

After the coal tray 2 is cleaned and dehydrated, the jacking cylinder 917 and the blocking cylinder 92 fall back, the coal tray 2 falls on the conveying system 16, and the conveying system 16 conveys the coal tray 2 into the drying device 8.

The drying device 8 can adopt a dryer to dry float coal and float and sink coal slime. And an online weighing device 5 is further arranged on the conveying system 16 and is used for weighing the dried float and sink coal slime and float coal.

Preferably, the coal plate lifting and storing device 1 and the coal plate lifting and storing device 4 are further included, and the coal plate lifting and storing devices 1 and 4 are respectively positioned at the head end and the tail end of the conveying system 16.

As shown in fig. 9 and 10, each of the coal panel lifting and storing devices 1 and 4 includes a lifting device and a synchronous lifting self-locking device 8.

The lifting device comprises an underframe assembly 41 and a conveyor chain assembly, wherein the conveyor chain assembly comprises two synchronously conveyed chain sets, and a lifting channel for accommodating the coal tray 2 is formed between the two chain sets.

The chain set includes an upper drive shaft 47, a lower drive shaft 42, two conveyor chains 44, and a plurality of coal tray supports 45.

The upper drive shaft 47 and the lower drive shaft 42 are rotatably mounted on the undercarriage assembly 41 by means of a journaled bearing, and the lower drive shaft 42 is located directly below the upper drive shaft 47. Two lifting sprockets 43 are fixed on the upper driving shaft 47 and the lower driving shaft 42, the transmission chain 44 is wound on the two lifting sprockets 43 on the upper driving shaft 47 and the lower driving shaft 42, the transmission chain 44 is vertically arranged, and optimally, two transmission chains 44 are respectively adjacent to two ends of the coal disk 2. The synchronous lifting of the two conveying chains 44 in the chain group on the same side can be realized by rotating the upper driving shaft 47 or the lower driving shaft 42. Further, the four lifting chain wheels 43 are completely identical, so that transmission involving and control are facilitated.

The conveying chains 44 are provided with lugs, and two ends of the coal tray support 45 are respectively fixed on the lugs of the two conveying chains 44 through connecting pieces such as bolts and the like. As shown in fig. 14, 15, 16, 17, and 18, the coal panel holder 45 includes a fixing portion 451, and a supporting portion 452 for supporting the coal panel 45 is provided on a side surface of the fixing portion 451 facing the ascending/descending path. Preferably, the support portion 452 engages the attachment portion 451 to form an L-shape, V-shape, or U-shape. An outer boss is arranged on the outer side surface of the coal tray 2, and when the coal tray supports 45 move along with the conveying chain 44, the coal tray supports 45 on the two opposite sides of the coal tray 2 are supported on the lower side of the outer boss of the coal tray 2 to support the coal tray 2.

The synchronous lifting self-locking device 48 drives the transmission chain 44 to rotate in one direction. As shown in fig. 11, 12 and 13, the synchronous lifting self-locking device includes a lifting device and a self-locking device.

The lift includes a box, a major axis 817 and a minor axis 811.

The box is fixed on chassis assembly 41, and the box includes box epitheca 83 and box inferior valve 81, and box epitheca 83 and box inferior valve 81 pass through bolt 813 connection, and box epitheca 83 and box inferior valve 81 enclose into from the lock chamber. The long shaft 817 and the short shaft 811 are rotatably mounted on the box body, the short shaft 811 and the long shaft 817 are both connected with the bearing 812 in a matching manner, and the bearing 812 is pressed together by the box body lower shell 81 and the box body upper shell 83.

The long shaft 817 and the short shaft 811 are in meshing transmission through gears, a first transmission gear 818 is fixed in the middle of the long shaft 817, a second transmission gear 810 is fixed in the middle of the short shaft 811, and the first transmission gear 818 is meshed with the second transmission gear 810.

Preferably, the first gear 818 and the second gear 810 are identical. The first transmission gear 818 and the second transmission gear 810 are respectively connected with a long shaft 817 and a short shaft 811 in a key mode, one end face of each gear is located by a shaft shoulder, and the other end face of each gear is limited by a shaft retainer ring 82.

The self-locking device includes at least one ratchet 86 and a ratchet pawl 88. Ratchet 86 is fixed to either major axis 817 or minor axis 811, and pawl 88 is mounted to the housing, with pawl 88 mating with ratchet 86. Specifically, a mounting hole is formed in the upper case 83 of the box body, the ratchet pawl 88 extends into the self-locking cavity from the mounting hole, a spring 87 is sleeved at the outer end of the ratchet pawl 88, and a ratchet cover 89 is sleeved outside the spring 87 and the ratchet pawl 88.

Preferably, the ratchet wheel 86 is fixed on both the long shaft 817 and the short shaft 811, two ratchet pawls 88 are provided on the case, and the two ratchet pawls 88 correspond to the two ratchet wheels 86 one by one, respectively.

Two ends of the long shaft 817 extend out of the self-locking cavity, and one end of the long shaft 817 is in transmission connection with a driving device; the driving device comprises a motor 84, and the motor 84 is in transmission connection with the long shaft 817 through a speed reducer 85.

The long shaft 817 and the short shaft 811 are in transmission connection with the two chain sets respectively. One end of the short shaft 811 extends out of the self-locking cavity, the driving chain wheel 814 is fixed at the end part of the long shaft 817 and the short shaft 811 extending out of the self-locking cavity, one end face of the driving chain wheel 814 is positioned by a shaft shoulder, the other end face is pressed and limited by the end cover 816, and the end cover 816 is pressed and fixed by the end cover screw 815. The upper driving shaft 47 is fixed with a driving sprocket 410, and the driving sprocket 814 and the driving sprocket 410 are driven by a driving chain 411.

When the motor 84 rotates, the power is transmitted to the speed reducer 85 and the long shaft 817, and the other end of the long shaft 817 directly transmits the power to the driving sprocket 814; at the same time, the long shaft 817 transmits power to the short shaft 811 through the gear set 810, and the short shaft 811 transmits power to the driving sprockets 814 at the ends thereof, so that synchronous reverse motion of the two driving sprockets 814 can be realized. Driven by the transmission chain 411, the transmission chain wheels 410 on the two upper driving shafts 47 rotate synchronously and reversely, and the synchronous and reverse rotation of the transmission chain wheels 410 can realize the synchronous lifting of the conveying chain 44.

For the coal plate lifting and storing device 4, when the coal plate 2 is transported to the lifting channel from the conveying system 16, the four conveying chains 44 are synchronously lifted after the motor 810 is started, and the coal plate 2 with the convex edge can be lifted by being buckled on the coal plate bracket 45. The reciprocating can realize that the coal disks 2 with different density levels are lifted one by one. Because the float-sink experiment of the coal body is to fish for the float coal from the low density level, therefore arrange the float coal of the minimum density level at the top of the device, density level increases sequentially from bottom to top, have realized the automatic queuing function of synchronous promotion of the coal panel 2 and the self-locking function, saved the floor area of the laboratory at the same time.

For the coal tray lifting storage device 1, a proper amount of coal samples are weighed on the weighing platform 18 and placed in the coal trays 2, then a plurality of coal trays 2 are stored on the coal tray bracket 45, and when an experiment is started, the coal trays 2 on the coal tray lifting storage device 1 are sequentially lowered onto the conveying system 16.

Because the ratchet wheel 86 is arranged on the long shaft 817 and the short shaft 811, the function of unidirectional movement and reverse locking can be realized, and the coal disk 2 cannot fall under the action of gravity even if the motor 810 is suddenly powered off or fails.

The specific working process of the floating and sinking experiment system is as follows:

the prepared coal sample is loaded on a weighing platform by a special coal tray 2 for weighing, and then is sequentially placed on a coal tray lifting storage device 1 after being weighed, and the floating and sinking experiments are sequentially waited for. The description will be given taking as an example the lowermost one of the in-line falling devices:

1. the coal trays 2 of the coal tray lifting and storing device 1 slowly fall at a constant speed, the coal tray 2 at the lowest part falls onto the conveying system 16, and the manipulator 8 positioned on the conveying system 16 can grab and turn over the conveyed coal tray 2; the manipulator 8 pours the coal sample in the coal tray 2 into a hopper at the lower end of the elevator 17;

2. after the elevator 17 starts to operate, the coal sample in the hopper is uniformly and continuously lifted under the belt transmission of the elevator 17, the lifted coal finally falls into the sink-float separator 3, and the coal sample entering the separation box 36 falls onto the mesh plate 334;

3. starting the guide rod cylinder 328, moving the stirring and cleaning spray head 325 downwards into the separating box 36, starting a water source control valve with the stirring and cleaning spray head 325 connected with a water source, spraying the water source from the stirring and cleaning spray head 325 and making rotary motion under the action of water backflushing; when the on-line liquid level meter 311 detects an appropriate liquid level, the water injection into the separation tank 36 is stopped, and the air supply control valve connected with the air supply is opened. Similarly, the stirring cleaning nozzle 325 rotates under the reverse blowing action of the air flow, plays a role in stirring the heavy liquid and the float coal, and stops blowing and stirring after stirring for a period of time; opening a pneumatic control gate valve 332 below the separation box 36, discharging the slime water out of the separation box 36, and then closing the gate valve 332;

4. the coal slime water discharged from the separation box 36 falls into the coal slime collector 15, the diaphragm pump 6 connected through a pipeline is arranged below the coal slime collector 15, the diaphragm pump 6 is started, the coal slime water is pumped into the suction filter 19, the suction filter 19 can be started to quickly and cleanly pump and filter the water in the coal slime water, the coal slime left on the filter paper of the suction filter 19 and the filter paper are conveyed to the drying device 8 through the conveying system 16, the coal slime and the filter paper are dried and then conveyed to the online weighing device 5 under the transmission of the conveying system 16, and after the online weighing device 5 collects weight information, the conveying line transmits the coal slime and the filter paper to the coal tray lifting storage device 4 to be lifted side by side;

5. after the cleaning is finished, lifting the stirring cleaning spray head 325, starting a heavy liquid supply pump, injecting heavy liquid into the separation tank 36 through the check valve 310 and the heavy liquid supply pipe 39, and stopping injecting the heavy liquid after the online liquid level meter 311 detects a proper liquid level; the stirring and cleaning nozzle 325 falls into the heavy liquid again, and the stirring and cleaning nozzle 325 rises back to a proper position after the heavy liquid and the float coal are blown and stirred for a period of time;

6. starting the partition plate cylinder 33, pushing the partition plate 35, enabling the partition plate 35 to enter the separation cavity, and dividing the heavy liquid and the float coal into an upper part and a lower part; the revolving door cylinder 336 is opened, the revolving door 323 is opened, and heavy liquid and coal fall into the coal tray 2 through the coal liquid guide plate 321; a hole is formed in the bottom of the coal tray 2, and heavy liquid is leached from the coal tray 2; the scraper cylinder 32 is started to push the scraper 37 in the separation box 36, and the scraper 37 can scrape residual coal left on the partition plate 35 out of the rotating door 323;

7. starting a heavy liquid replenishing pump to replenish heavy liquid to a proper position in the separation tank 36, and repeating the steps 5 and 6 to complete the separation of the density-level float coal;

8. opening the heavy liquid recovery valve 314, recovering the heavy liquid of the density level, repeating the steps 5, 6 and 7, and completing the separation of the float coal of the next density level; after the separation of the last density-level float coal, the mesh plate cylinder 313 is opened, the mesh plate 334 in the separation box 36 is rotated, and the gangue falls into the square cone hopper of the separation box 36. Opening the gate valve 332, and discharging the rest gangue out of the square container 36; a water source control valve of the stirring and cleaning spray head 325 is opened, water is sprayed into the separation box 36, the stirring and cleaning spray head 325 reciprocates up and down under the action of the guide rod air cylinder 328, the sprayed water cleans the inner wall of the separation box 36, cleaning is completed, and all parts return;

9. the float coal falling in the coal tray 2 is conveyed to the float coal cleaning and dehydrating device 9 under the transmission of the conveying system 16, the water collecting hopper 920 on the jacking mechanism of the float coal cleaning and dehydrating device 9 jacks the coal tray 2 to the lower part of the cover body 93, and the coal tray, the cover body 93 and the water collecting hopper 920 form a closed container. At the moment, the cleaning nozzle 97 on the cover body 93 firstly sprays a certain amount of water, then the air is ventilated and stirred, after a period of time, the valve 915 is opened, the water in the water collecting hopper 920 flows into the pressure tank 914 through the hose 911 and is directly discharged, and the cleaning of the float coal is completed; after the float coal is cleaned, the water collecting jacking mechanism is still in a jacking state, the valve 914 is closed, the vacuum pump 913 is started, the water soaked float coal can quickly drain water to the pressure tank 914 under the action of gravity and vacuum, and after a period of time, the vacuum pump 913 stops working; opening a valve 915 to discharge the dehydrated water, and finishing the dehydration work at the moment; returning all the parts in the float coal cleaning and dehydrating device 9, and dropping the coal tray 2 onto the conveying system 16 again;

10. the coal tray 2 is conveyed to a drying device 8 under the conveying of a conveying system 16, and the drying device 8 quickly dries wet coal;

11. the dried coal disk 2 and the coal enter the online weighing device 5 for weighing under the transmission of the conveying system 16, and after the weighing platform collects weight information, the conveying system 16 conveys the coal disk to the coal disk lifting storage device 4 again and lifts the coal disk in a queue.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a coal floats and sinks experimental system which characterized in that: the device comprises a float-sink separator, a float coal cleaning and dewatering device, a float-sink coal slime treatment device, a drying device, a coal tray and a conveying system for conveying the coal tray;

a lifting machine and a mechanical arm are arranged on one side of the conveying system, the mechanical arm transfers coal in the coal tray to the lifting machine, and the lifting machine conveys the coal to the floating-sinking separator;

the floating and sinking coal slime treatment device is communicated with the floating and sinking separator and used for collecting floating and sinking coal slime;

in the conveying direction of the conveying system, the float coal cleaning and dehydrating device is positioned at the downstream of the float-sink separator, and is used for cleaning float coal and completing dehydration;

the drying device is used for drying the float and sink coal slime and float coal;

and an online weighing device is further arranged on the conveying system, and the dried coal slime and float coal are heavy.

2. The coal floating and sinking experiment system of claim 1, wherein: the sink-float separator comprises

The separation box is internally provided with a separation cavity, and a separation outlet is arranged on the side wall of the separation cavity;

the door body assembly can open or close the separation outlet;

the partition plate is positioned below the separation outlet, can slide into or exit from the separation cavity along the horizontal direction, and can divide the separation cavity into an upper separation cavity communicated with the separation outlet and a lower separation cavity separated from the separation outlet after extending into the separation cavity;

and a scraper that slides on the partition and that can be brought close to or away from the separation outlet;

the separation chamber is provided with a separation cavity, and the separation chamber is provided with a separation cavity; and the outer wall of the separation box is provided with a mesh plate driving assembly for driving the mesh plate to rotate or swing.

3. The coal floating and sinking experiment system of claim 2, wherein: the separation outlet is positioned at the upper end of the separation box, a partition plate accommodating groove is formed in the separation box, the partition plate accommodating groove and the separation outlet are respectively positioned on opposite side walls of the separation box, and the partition plate and the scraper are both positioned in the partition plate accommodating groove; the baffle holding tank with be fixed with the cylinder connecting plate on the relative lateral wall of separation export, be fixed with scraper blade cylinder and baffle cylinder on the cylinder connecting plate, the scraper blade cylinder with the scraper blade is connected, the baffle cylinder with the baffle is connected.

4. The coal floating and sinking experiment system of claim 2, wherein: still include stirring belt cleaning device, stirring belt cleaning device includes

The connecting bracket is fixed on the separation box, and the upper end of the connecting bracket extends to the upper part of the opening of the separation cavity;

the stirring and cleaning nozzle is fixed at the upper end of the connecting bracket through a lifting device;

the stirring cleaning sprayer further comprises an air source control valve and a water source control valve, wherein the air source control valve and the water source control valve are communicated with the input pipe of the stirring cleaning sprayer.

5. The coal floating and sinking experiment system of claim 1, wherein: the float coal cleaning and dehydrating device comprises a frame, a cleaning device and a water collecting jacking mechanism are arranged on the frame, and the float coal cleaning and dehydrating device also comprises a coal tray and a negative pressure dehydrating device;

the coal disk comprises

The upper end of the tray body is provided with an opening, and the bottom wall of the tray body is provided with a water filtering port;

the mesh plate covers the water filtering port;

the cleaning device comprises

The cover body is fixed on the frame, the upper end of the cover body is closed, and the lower end of the cover body is provided with a connecting port matched with the upper end opening of the coal plate;

the cleaning spray head is fixed on the cover body and sprays water into the cover body;

the water collecting jacking mechanism comprises

The upper end of the water collecting hopper is opened and is adaptive to the water filtering port;

the jacking mechanism is connected with the water collecting hopper and drives the water collecting hopper to lift;

the negative pressure dehydration device is communicated with the lower end of the water collecting hopper.

6. The coal floating and sinking experiment system of claim 5, wherein: the conveying system corresponding to the frame comprises two conveying lines which are arranged in parallel and synchronously convey, a blocking cylinder is arranged between the two conveying lines, and the blocking cylinder is positioned at the downstream of the cover body in the conveying direction of the conveying lines; the conveying line is characterized by further comprising two guide plates, wherein the two guide plates are located on the outer sides of the two conveying lines respectively.

7. The coal floating and sinking experiment system of claim 5, wherein: the negative pressure dehydration device comprises

The middle part of the pressure tank is communicated with the water collecting hopper, and the lower part of the pressure tank is provided with a valve;

and the vacuum pump is communicated with the top of the pressure tank through a vacuum pipe.

8. The coal floating and sinking experiment system of claim 1, wherein: the floating and sinking coal slime treatment device comprises a mud-water collector, and the mud-water collector is communicated with the floating and sinking separator through a pipeline; the device also comprises a diaphragm pump and a suction filter, wherein the diaphragm pump pumps the muddy water in the muddy water collector into the suction filter.

9. The coal floating and sinking experiment system of claim 1, wherein: the coal disk lifting and storing device comprises a conveying system and two coal disk lifting and storing devices, wherein the two coal disk lifting and storing devices are respectively positioned at the upstream end and the downstream end of the conveying system; the coal disk lifting and storing device comprises

A lifting device, the lifting device comprises

The bottom frame assembly is arranged on the bottom frame,

the conveying chain assembly comprises two synchronously conveyed chain groups, and a lifting channel for accommodating the coal trays is formed between the two chain groups; the chain set comprises

The upper driving shaft is rotatably arranged on the underframe assembly;

the lower driving shaft is rotatably arranged on the underframe assembly and is positioned right below the upper driving shaft;

the two conveying chains are provided with lugs;

two ends of the coal tray bracket are respectively fixed on the hangers of the two conveying chains;

lifting chain wheels are fixed on the upper driving shaft and the lower driving shaft, and the conveying chain is wound on the two lifting chain wheels of the upper driving shaft and the lower driving shaft;

the conveying device corresponds to the lifting channel in position;

and the synchronous lifting self-locking device drives the conveying chain to rotate in one direction.

10. The coal floating and sinking experiment system of claim 9, wherein: the synchronous lifting self-locking device comprises

A lifting device comprising

The box body is fixed on the underframe assembly;

the long shaft is rotatably arranged on the box body, a first transmission gear is fixed in the middle of the long shaft, and one end of the long shaft is in transmission connection with a driving device;

the short shaft is rotatably arranged on the box body, a second transmission gear is fixed in the middle of the short shaft, and the first transmission gear is meshed with the second transmission gear;

the long shaft and the short shaft are both fixed with a driving chain wheel, the upper driving shaft is fixed with a driving chain wheel, and the driving chain wheel are driven by a driving chain;

and a self-locking device, the self-locking device comprises

At least one ratchet fixed on the major axis or the minor axis;

and the ratchet pawl is arranged on the box body and is matched with the ratchet wheel.

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