CN111921839B

CN111921839B - Experimental device for continuously separating mixture of coal containing gas and water

Info

Publication number: CN111921839B
Application number: CN202010635753.5A
Authority: CN
Inventors: 徐宏杰; 桑树勋; 杨景芬; 刘会虎; 曹丽文; 黄华州; 王海文; 刘世奇; 刘长江; 周效志; 贾金龙; 王冉; 王博文; 方泽中
Original assignee: China University of Mining and Technology CUMT; Anhui University of Science and Technology
Current assignee: China University of Mining and Technology CUMT; Anhui University of Science and Technology
Priority date: 2020-07-03
Filing date: 2020-07-03
Publication date: 2022-03-22
Anticipated expiration: 2040-07-03
Also published as: CN111921839A

Abstract

An experimental device for continuously separating a mixture of coal containing gas and water comprises a feeding crusher; the separation equipment comprises a bin body, a sealing bin door and a feeding pipe are mounted on the top surface of the bin body, a first-stage sieve plate is mounted on the top inside the bin body, and the diameters of meshes of the first-stage sieve plate, the second-stage sieve plate and the third-stage sieve plate are sequentially reduced; the bottom installation heat preservation cover of second grade sieve, the heat preservation cover includes riser, stripper and breakwater, the internally mounted of heat preservation cover has the heat preservation pump, the surface embedding of stripper has the second heating panel, the surface embedding of breakwater has first heating panel. The method can accurately simulate the actual separation process, the separation process and each action parameter have extremely important guiding significance on actual production, the danger of field construction experiments is avoided, and the coal bed gas exploitation is simpler and more efficient.

Description

Experimental device for continuously separating mixture of coal containing gas and water

Technical Field

The invention belongs to the technical field of coal bed methane mining, and particularly relates to an experimental device for continuous separation of a mixture of coal containing gas and water.

Background

The traditional energy resources can not meet the current excessive consumption of the energy resources, and the development and utilization of the coal bed gas can relieve the current situation of energy shortage in the world. The coal bed gas is developed and utilized, so that the gas accident rate of a coal mine can be greatly reduced, the gas in a mine exhaust greenhouse can be reduced, the coal bed gas can be used as a clean energy source to generate great economic benefit, and the coal bed gas has very important significance for guaranteeing the energy safety and reducing the external dependence of natural gas.

Extensive development of tectonic coal and abundant resources of coal bed gas of tectonic coal are remarkable characteristics of Chinese coal and coal bed gas resources. By adopting the cave pressure relief mining system of the coal in-situ coal bed gas horizontal well, the efficient and continuous development of the coal bed gas can be realized. However, a large amount of mixture containing gas coal, water and gas is generated in the development process, and how to realize efficient, continuous and rapid separation of gas, water and coal is an important theoretical and technical problem for constructing cave pressure relief mining of in-situ coal bed gas horizontal wells. However, the structural coal development area is a forbidden area for in-situ coal bed gas development, no deep report is found in the in-situ coal bed gas development technology and method, no research report is found on efficient, continuous and rapid separation of gas, water and coal, and the common two-phase or three-phase mixture separation method has the problem that the efficient, continuous and rapid separation of gas, water and coal generated by cave pressure relief mining of the structural in-situ coal bed gas horizontal well is difficult to realize due to the fact that specific objects are not symmetrical.

The efficient, continuous and rapid separation of a large amount of viscous mixed fluid containing gas coal, gas and water generated by in-situ coal bed gas horizontal well cave pressure relief mining in a constructed coal development area is the key point for realizing efficient coal mining, gas production and water resource recycling, however, a gas and water mixed fluid shunting scheme is determined by field operation, so that a plurality of obstacles exist, the cost is high, the risk coefficient is large, and a specific separation scheme cannot be determined rapidly; in view of this, effective separation and collection of a large amount of mixed fluid containing gas coal, gas and water with viscosity generated by simulating pressure relief mining of the cave of the in-situ coal bed gas horizontal well of the structural coal development area in a laboratory are important for researching and realizing in-situ coal bed gas successful mining of the structural coal development area, and important theoretical guidance can be provided for pressure relief mining of the cave of the in-situ coal bed gas horizontal well of the structural coal development area, and important theoretical significance and practical production guidance significance are provided for developing coal bed gas of the structural coal development area.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides an experimental device for continuously separating a mixture of coal containing gas and water, which has the following specific technical scheme:

an experimental device for continuously separating a mixture of coal containing gas and water comprises a feeding crusher; the multi-component separation device is connected in parallel at an outlet of the feeding crusher and comprises a bin body, a sealing bin gate and a feeding pipe are mounted on the top surface of the bin body, a first-stage sieve plate is mounted at the top inside the bin body, the feeding pipe extends downwards to the inlet end of the first-stage sieve plate, a second-stage sieve plate is arranged at the bottom of the first-stage sieve plate at intervals, a third-stage sieve plate is mounted at the bottom of the second-stage sieve plate at intervals, and the diameters of meshes of the first-stage sieve plate, the second-stage sieve plate and the third-stage sieve plate are sequentially reduced; the three-stage sieve plate is rotationally connected with the inner wall of the bin body, the bottom of the three-stage sieve plate is connected with a rotation supporting mechanism, and the rotation supporting mechanism is used for driving the three-stage sieve plate to rotate;

the bottom of the second-stage sieve plate is provided with a heat-insulating cover, the heat-insulating cover comprises a vertical plate, a discharge plate and a water baffle plate, the vertical plate is vertically fixed on the inner bottom surface of the bin body, the top end of the vertical plate is connected with the discharge plate which inclines upwards, the discharge plate is positioned at the bottom of an outlet of the second-stage sieve plate, the top end of the discharge plate is connected with the water baffle plate which inclines downwards, the water baffle plate extends downwards to one side of the third-stage sieve plate, the bottom end of the third-stage sieve plate is attached to the surface of the third-stage sieve plate, an enclosed area between the third-stage sieve plate and the water baffle plate is a material collecting cavity, the bottom of the material collecting cavity is communicated with a first discharge hopper, a discharge three-way valve is installed at the outlet of the first discharge hopper, and the outlet of the discharge three-way valve is connected in parallel to a fine coal discharge pipe and a slime water discharge pipe; the area between the vertical plate and the inner wall of the bin body is communicated to the second discharge hopper;

the heat-preservation cover is characterized in that a heat-preservation pump is arranged inside the heat-preservation cover, a second heating panel is embedded into the surface of the discharging plate, a first heating panel is embedded into the surface of the water baffle, the first heating panel and the second heating panel are communicated to the heat-preservation pump, and the first heating panel and the second heating panel are used for increasing the temperature and relieving the coal bed gas sucked out of the coal particles.

Furthermore, the top of stripper is equipped with thermal-insulated cotton board relatively in parallel, be the high temperature region between thermal-insulated cotton board, the stripper, the ejection of compact orbit of one-level sieve, second grade sieve all is located the high temperature region.

Furthermore, the upper surface of the heat insulation cotton plate is provided with a plurality of groups of hot air generating mechanisms, and the hot air generating mechanisms are used for discharging hot air to the high-temperature area.

Furthermore, the hot air generating mechanism comprises an insulating hot air blower, an air outlet cover, an inner air inlet pipe and an outer air inlet pipe; the insulating air heater is arranged on the top surface of the heat insulation cotton plate, the outlet of the insulating air heater is communicated with the air outlet cover, the air outlet cover is arranged on the bottom surface of the heat insulation cotton plate and is in a trapezoidal horn shape, the air inlet of the air outlet cover is connected with an inner air inlet pipe and an outer air inlet pipe in parallel, the inner air inlet pipe is arranged in the bin body, and the outer air inlet pipe extends out of the bin body.

Further, the top installation one-level sieve washes the mechanism, the both sides wall sliding connection of one-level sieve has the second grade sieve to wash the mechanism, the second grade sieve washes the top that the mechanism was arranged in the second grade sieve, the bottom of second grade sieve is installed tertiary sieve and is washed the mechanism, tertiary sieve washes the mechanism and rotates and install in the inner wall in the storehouse body.

Further, the width of one-level sieve, second grade sieve and tertiary sieve increases in proper order, the width of tertiary sieve is the same with the width that keeps warm the cover, the width that keeps warm the cover is less than the width of thermal-insulated cotton board.

Further, the rotation supporting mechanism comprises an electric hydraulic rod, a guide rail and a telescopic supporting rod, one end of the electric hydraulic rod is connected with the inner wall of the bin body, the other end of the electric hydraulic rod is connected with the three-stage sieve plate in a rotating mode, the two side walls of the three-stage sieve plate are provided with the guide rail, the bottom end of the telescopic supporting rod is connected to the bottom side wall of the water baffle in a rotating mode, the top end of the telescopic supporting rod is connected with a sliding block in a rotating mode, and the sliding block is embedded into the guide rail.

Furthermore, a first temperature sensor is embedded in the surface of the discharging plate, a second temperature sensor is installed on the side wall of the air outlet cover, and a methane concentration monitor, a gas temperature monitor, a gas humidity monitor and a gas pressure monitor are installed at the top of the side wall of the bin body; the first temperature sensor, the second temperature sensor, the methane concentration monitor, the gas temperature monitor, the gas humidity monitor and the gas pressure monitor are all electrically connected to the monitoring host box.

Furthermore, one end of the first-stage sieve plate is rotatably connected to the inner wall of the bin body, the other end of the first-stage sieve plate is mounted on the first-stage sieve plate buffer mechanism, one end of the second-stage sieve plate is rotatably connected to the inner wall of the bin body, the other end of the second-stage sieve plate is mounted on the second-stage sieve plate buffer mechanism, and the first-stage sieve plate buffer mechanism is mounted on the outer side of the second-stage sieve plate buffer mechanism.

The invention has the beneficial effects that: a large amount of mixed fluid containing gas coal, gas and water with certain viscosity generated by cave pressure relief mining of the in-situ coal bed gas horizontal well can be put into the experimental device, the action parameters of all devices in the experimental device are changed and regulated so as to achieve the effect of fully separating coal particles, water and coal bed gas in coal blocks, the actual separation process can be accurately simulated, the separation process and all the action parameters have extremely important guiding significance on actual production, the danger of field construction experiments is avoided, and the coal bed gas mining is simpler, more convenient and more efficient.

Drawings

FIG. 1 shows a schematic structural diagram of an experimental apparatus for continuous separation of a mixture of coal containing gas and water according to the present invention;

fig. 2 shows a schematic structural diagram of a two-stage sieve plate flushing mechanism of the invention;

FIG. 3 shows a schematic diagram of the matching structure of the primary sieve plate, the secondary sieve plate and the tertiary sieve plate;

FIG. 4 is a schematic view showing the structure of the hot wind generating mechanism of the present invention;

FIG. 5 is a schematic view of the cartridge body distribution structure of the present invention;

shown in the figure: 1. a bin body; 101. sealing the bin gate; 102. a feed pipe; 2. a first-stage sieve plate flushing mechanism; 3. a first-stage sieve plate; 301. a slide rail; 4. a second-stage sieve plate flushing mechanism; 401. a slide bar; 402. a spray head; 403. a brush; 5. a second-stage sieve plate; 6. a third-stage sieve plate flushing mechanism; 7. a third-stage sieve plate; 8. a rotation support mechanism; 801. an electro-hydraulic lever; 802. a guide rail; 803. a telescopic strut; 9. a heat-preserving cover; 901. a water baffle; 9011. a first heating panel; 902. a stripper plate; 9021. a second heating panel; 903. a vertical plate; 10. a first discharge hopper; 11. a discharge three-way valve; 1101. a fine coal discharge pipe; 1102. a coal slime water discharging pipe; 12. monitoring the host box; 13. a heat preservation pump; 14. a heat insulating cotton sheet; 15. a hot air generating mechanism; 1501. an insulating air heater; 1502. an air outlet cover; 1503. an inner air inlet pipe; 1504. an outer air inlet pipe; 16. an exhaust pipe; 17. a coal bed gas treatment tank; 18. a first-stage sieve plate buffer mechanism; 1801. an upper fixing frame; 1802. mounting blocks; 1803. a spring; 1804. a lower fixing frame; 19. a secondary sieve plate buffer mechanism; 20. feeding the mixture into a pipe; 21. feeding a crusher; 22. a feed three-way valve; 23. and a second discharge hopper.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

An experimental device for continuously separating a mixture of coal containing gas and water comprises a feeding crusher 21; the outlet of the feeding crusher 21 is connected with a plurality of groups of separation devices in parallel, the separation devices are provided with a plurality of groups, when the material accumulation in one separation device is large, the other group of separation devices acts to ensure the continuous separation; the feeding crusher 21 is used for crushing the conveyed coal blocks;

the separation equipment comprises a bin body 1, wherein a sealed bin door 101 and a feeding pipe 102 are arranged on the top surface of the bin body 1; the feeding pipe is communicated with the crusher, and the hinged sealing bin door is used for facilitating people to open the bin body;

the top of the interior of the bin body 1 is provided with a first-stage sieve plate 3, and the feeding pipe 102 extends downwards to the inlet end of the first-stage sieve plate 3; the screen surface of the first-stage screen plate is provided with uniformly distributed mesh holes, and various screen surfaces such as a string screen surface, a stainless steel filament woven composite screen, a polyurethane screen surface or a slotted screen surface can be selected according to the requirement of the particles; the first-stage sieve plate can be detached and replaced; selecting screen surfaces with different meshes according to different particle sizes and concentrations of incoming material mixtures; the slope angle of the screen surface can be adjusted, is generally not more than 15 degrees, and can be negative degrees when necessary; the function of the first-stage sieve plate is as follows: coarsely screening the incoming material mixture, and separating coarse particles of coal from water; water and coal particles passing through fall into a lower device, and large particles not passing through flow out from the left side of the screen surface; the amplitude and the frequency are controlled by a connected vibration motor outside the bin body; the vibrating screen can vibrate synchronously with the second-stage sieve plate at the same frequency and amplitude, and also can vibrate at different frequencies and different amplitudes;

the bottom of the first-stage sieve plate 3 is provided with a second-stage sieve plate 5 at intervals; the screen surface of the second-stage screen plate can be selected from various screen surfaces such as a string screen surface, a stainless steel filament woven composite screen, a polyurethane screen surface or a slotted screen surface according to the requirement of grains; the device can be disassembled and replaced. Selecting screen surfaces with different meshes according to different particle sizes and concentrations of incoming material mixtures; the amplitude and the frequency are controlled by a connected vibration motor outside the bin body. The vibrating screen can vibrate synchronously with the first-stage sieve plate at the same frequency and amplitude, and can also vibrate at different frequencies and different amplitudes; the function of the second-stage sieve plate is as follows: further fine screening the incoming mixture to separate fine coal particles from water, the water and the coal particles passing through falling into the lower device, and the large particles not passing through flowing out from the left side;

and a third-stage sieve plate 7 is arranged at the bottom of the second-stage sieve plate 5 at intervals, and the third-stage sieve plate can be detached and replaced. Selecting screen surfaces with different meshes according to different particle sizes and concentrations of incoming material mixtures; the function of the third-stage sieve plate is as follows: the incoming material mixture is further finely screened, most coal particles are separated, and only water and ultrafine coal particles pass through; the trapped coal particles are stored at the top of the third-stage sieve plate;

the diameters of the meshes of the first-stage sieve plate 3, the second-stage sieve plate 5 and the third-stage sieve plate 7 are reduced in sequence; the diameters are sequentially reduced to realize multi-stage screening, so that the separation effect is improved; the mesh number of the screen can reach about 120 meshes at most (namely, the diameter of the mesh is about 0.125mm at least);

the three-stage sieve plate 7 is rotationally connected with the inner wall of the bin body 1, the bottom of the three-stage sieve plate 7 is connected with a rotation supporting mechanism 8, and the rotation supporting mechanism 8 is used for driving the three-stage sieve plate 7 to rotate; after the coal particles on the top of the third-stage sieve plate are accumulated to a certain amount and desorption is finished, the rotating support mechanism can drive the third-stage sieve plate to rotate downwards, so that the accumulated coal particles are discharged downwards, and after the discharge is finished, the rotating support mechanism can drive the third-stage sieve plate to rotate upwards to reset so as to continue processing; the rotating support mechanism can enable the third-stage sieve plate to stably rotate;

the bottom of the secondary sieve plate 5 is provided with a heat-insulating cover 9, and the heat-insulating cover 9 is used for forming a high-temperature continuous cavity, so that coal particles can be heated and desorbed all the time without interruption; desorption, i.e. the process of releasing the absorbed or adsorbed substance from the absorbent or adsorbent;

the heat preservation cover 9 comprises a vertical plate 903, a discharging plate 902 and a water baffle 901, wherein the vertical plate 903 is vertically fixed on the inner bottom surface of the bin body 1, the top end of the vertical plate 903 is connected with the discharging plate 902 which is inclined upwards, the discharging plate 902 is positioned at the bottom of an outlet of the secondary sieve plate 5, and an area between the vertical plate 903 and the inner wall of the bin body 1 is communicated to a second discharging hopper; coal particles discharged by the first-stage sieve plate and the second-stage sieve plate are collected to the discharging plate and then flow out to the second discharging hopper, discharging and guiding of large-particle coal particles are achieved, and in the discharging process, the discharging plate with high temperature can heat the coal particles flowing through, so that gas in the large-particle coal particles is desorbed;

the top end of the discharging plate 902 is connected with a water baffle 901 which inclines downwards, the water baffle 901 extends downwards to one side where the third-stage sieve plate 7 is located, the bottom end of the third-stage sieve plate 7 is attached to the surface of the third-stage sieve plate 7, the area enclosed between the third-stage sieve plate 7 and the water baffle 901 is a material collecting cavity, and the bottom of the material collecting cavity is communicated with a first discharging hopper 10; the water baffle can block water and prevent water from scattering, so that water and coal particles can be stably stored in the collecting cavity, the water baffle is a bearing plate body with certain strength, and the lower part of the water baffle is fixed with the bin body; the function of breakwater does: the mixture of the coal particles and the water dropped from the secondary sieve plate falls down along the panel; the coal particles are piled up at the position of the aggregate cavity, but the passing of the finer coal particles and water from the third-stage sieve plate is not influenced; the piled coal particles need a certain time to be piled up, and the high-temperature water baffle can heat the coal particles, so that the coalbed methane in the coal particles has enough time to be desorbed;

an outlet of the first discharging hopper 10 is provided with a discharging three-way valve 11, and an outlet of the discharging three-way valve 11 is connected to a fine coal discharging pipe 1101 and a slime water discharging pipe 1102 in parallel; the discharge three-way valve 11 can control the on-off of the fine coal discharge pipe 1101 and the coal slurry discharge pipe 1102, when only water and a small amount of fine coal particles are discharged, only the coal slurry discharge pipe 1102 is opened, and when accumulated coal particles need to be discharged, the three-stage sieve plate rotates downwards, and only the fine coal discharge pipe 1101 is opened;

a heat preservation pump 13 is installed inside the heat preservation cover 9, a second heating panel 9021 is embedded in the surface of the discharging plate 902, a first heating panel 9011 is embedded in the surface of the water baffle 901, the first heating panel 9011 and the second heating panel 9021 are both communicated to the heat preservation pump 13, and the first heating panel 9011 and the second heating panel 9021 are used for increasing the temperature and relieving the coal bed gas sucked out of the coal particles; the heat preservation pump can be continuous heating heat preservation medium for first heating panel, second heating panel keep high temperature constant temperature state, and first heating panel, second heating panel can heat the coal grain, make the coal bed gas desorption in the coal grain, realize the separation of three of gas, liquid and coal grain.

As an improvement of the above technical scheme, the top of the discharging plate 902 is relatively provided with a heat insulation cotton plate 14 in parallel, a high temperature region is arranged between the heat insulation cotton plate 14 and the discharging plate 902, and the discharging tracks of the first-stage sieve plate 3 and the second-stage sieve plate 5 are both positioned in the high temperature region; the heat that thermal-insulated cotton board can avoid the cotton board of second heating to produce upwards scatters for the heat gathering is between thermal-insulated cotton board, stripper, thereby increases the heating effect to the coal grain of flowing through, makes the coal bed tolerance of separating the suction more.

As an improvement of the above technical solution, a plurality of groups of hot air generating mechanisms 15 are installed on the upper surface of the heat insulation cotton plate 14, and the hot air generating mechanisms 15 are used for discharging hot air to a high temperature region; the hot air generating mechanism 15 is used for generating hot air, so that the heat of the high-temperature area is higher, and the desorption effect is better.

As an improvement of the above technical solution, the hot air generating mechanism 15 includes an insulating hot air blower 1501, an air outlet cover 1502, an inner air inlet pipe 1503, and an outer air inlet pipe 1504; the insulating hot air blower 1501 is installed on the top surface of the heat insulation cotton plate 14; the insulating air heater is adopted to generate hot air, so that the hot air is favorably dispersed, electric sparks can be prevented from being generated, and gas explosion is avoided;

an outlet of the insulating hot air blower 1501 is communicated with an air outlet cover 1502, the air outlet cover 1502 is arranged on the bottom surface of the heat insulation cotton plate 14, and the air outlet cover 1502 is in a trapezoidal horn shape; the air outlet cover adopting the shape is beneficial to the dispersion and downward blowing of hot air;

an inner air inlet pipe 1503 and an outer air inlet pipe 1504 are connected in parallel to an air inlet of the air outlet cover 1502, the inner air inlet pipe 1503 is arranged in the bin body 1, and the outer air inlet pipe 1504 extends out of the bin body 1; the desorbed coal bed gas in the bin body is gathered in the upper cavity in the bin body, the coal bed gas can provide required gas for the insulating air heater through the inner air inlet pipe, the insulating air heater does not need to be heated greatly due to the fact that the coal bed gas has certain temperature, energy consumption is reduced, and the desorbed gas can circulate in the bin body, so that gas circulation heating is formed; the inner air inlet pipe is provided with a valve body which is arranged outside the bin body; when the gas in the bin body is insufficient, external gas or methane gas can be supplied to the insulating air heater, and sufficient hot air circulation is ensured.

As an improvement of the technical scheme, a first-stage sieve plate flushing mechanism 2 is installed at the top of a first-stage sieve plate 3, two side walls of the first-stage sieve plate 3 are connected with a second-stage sieve plate flushing mechanism 4 in a sliding mode, the second-stage sieve plate flushing mechanism 4 is arranged at the top of a second-stage sieve plate 5, a third-stage sieve plate flushing mechanism 6 is installed at the bottom of the second-stage sieve plate 5, and the third-stage sieve plate flushing mechanism 6 is rotatably installed on the inner wall of a bin body 1;

one-level sieve washes mechanism includes hydraulic power and sprays ring, water conservancy nozzle, and on water conservancy nozzle a plurality of was fixed in water conservancy and sprays the ring according to the equidistance, the shower nozzle scatters down, and water conservancy nozzle's function does: providing power water mist, cleaning a first-stage sieve plate, suspending and fixing a hydraulic spraying ring below a sealing bin door, and arranging 3 groups according to the length of the bin body, wherein the number of the groups can be adjusted. The pattern can be rectangular according to the plane structure of the bin body, and can also be in other shapes, such as a round shape or a combination of a semicircular shape and a rectangular shape. A plurality of hydraulic nozzles are fixed on each ring at equal intervals, and the rings are connected with an external control device to provide water sources for each hydraulic nozzle; the hydrodynamic force is controlled by an external controller;

the two-stage sieve plate flushing mechanisms comprise 2 groups, each two-stage sieve plate flushing mechanism comprises a spray head 402, a sliding rod 401 and a brush 403, one group is a backward hydraulic spray head and a brush, the other group is a downward hydraulic spray head and a brush, the two groups of two-stage sieve plate flushing mechanisms are suspended at an outer groove of the one-stage sieve plate, the two-stage sieve plate flushing mechanisms axially penetrate through two sides of the one-stage sieve plate, the spray heads are axially arranged at a certain distance and in parallel at equal intervals, can rotate for a certain angle around an axis and can move back and forth along the outer groove of the side plate of the one-stage sieve plate, the movement is realized by matching of a sliding rail 301 and a sliding rod 401, and the movement speed is determined by an external controller; the function that second grade sieve washed the mechanism does: cleaning the secondary sieve plate, rotating a certain angle for continuous dynamic cleaning to prevent incomplete cleaning, wherein the size of the water injection amount and the injection speed are controlled by an external controller; the brush 403 is a rotary roller brush;

the three-stage sieve plate flushing mechanism comprises a rotating shaft (or a rigid water pipe, hollow water and water) and a hydraulic sprayer, wherein the rotating shaft is fixed on the inner wall of the bin body. The hydraulic nozzle is communicated with the rigid water pipe and is supplied with water by the external cloth device; the hydraulic nozzles are arranged at equal intervals and can rotate about 160 degrees. The size of the water jet, the jet speed and the rotating speed are all controlled by an external controller. The functions are as follows: rotating to the lower side to clean the third-stage sieve plate, and rotating to the upper side to clean the bottom of the second-stage sieve plate;

as an improvement of the technical scheme, the widths of the first-stage sieve plate 3, the second-stage sieve plate 5 and the third-stage sieve plate 7 are sequentially increased, the width of the third-stage sieve plate 7 is the same as that of the heat-preservation cover 9, and the width of the heat-preservation cover 9 is smaller than that of the heat-insulation cotton plate 14; the width of three sieve increases in proper order, can avoid the coal grain of sifting to scatter, guarantees that subordinate's sieve can accept the coal grain that drops completely, and the heat preservation cover is big than tertiary sieve area for discharged coal grain all can hold, and breakwater, stripper can fully block, the water conservancy diversion medium, and the thermal-insulated cotton board of maximum area can play fine thermal-insulated heat preservation effect.

As an improvement of the above technical solution, the rotation supporting mechanism 8 includes an electric hydraulic rod 801, a guide rail 802 and a telescopic strut 803, one end of the electric hydraulic rod 801 is connected to the inner wall of the cabin 1, and the other end thereof is rotatably connected to the third-stage sieve plate 7, the guide rail 802 is arranged on two side walls of the third-stage sieve plate 7, the bottom end of the telescopic strut 803 is rotatably connected to the side wall of the bottom end of the water baffle 901, the top end of the telescopic strut 803 is rotatably connected to a sliding block, and the sliding block is embedded in the guide rail 802; the electric hydraulic rod can drive the tertiary sieve plate to rotate up and down, when rotating, the tertiary sieve plate can drive the slider along the motion of guide rail, and the telescopic link follows concertina movement and rotates, and the telescopic link can follow the tertiary sieve of bottom sprag to guarantee the rotational stability of tertiary sieve, avoid tertiary sieve to be crushed by accumulational coal grain.

As an improvement of the above technical solution, a first temperature sensor is embedded in the surface of the discharging plate 902, a second temperature sensor is installed on the sidewall of the air outlet cover 1502, and a methane concentration monitor, a gas temperature monitor, a gas humidity monitor and a gas pressure monitor are installed on the top of the sidewall of the bin body 1; the first temperature sensor, the second temperature sensor, the methane concentration monitor, the gas temperature monitor, the gas humidity monitor and the gas pressure monitor are all electrically connected to the monitoring main machine box 12; the first temperature sensor can monitor the surface temperature of the stripper plate; the second temperature sensor can monitor the temperature of the blown hot air; the methane concentration monitor is used for monitoring the change condition of the methane concentration in the bin body and has an alarm function according to the set condition; the gas temperature monitor, the gas humidity monitor and the gas pressure monitor are used for monitoring gas pressure and gas temperature so as to be discharged in time and ensure the safety of the bin body.

As an improvement of the above technical solution, one end of the first-stage sieve plate 3 is rotatably connected to the inner wall of the silo body 1, and the other end is mounted on the first-stage sieve plate buffer mechanism 18, one end of the second-stage sieve plate 5 is rotatably connected to the inner wall of the silo body 1, and the other end is mounted on the second-stage sieve plate buffer mechanism 19, and the first-stage sieve plate buffer mechanism 18 is mounted on the outer side of the second-stage sieve plate buffer mechanism 19; the primary sieve plate buffer mechanism 18 comprises an upper fixing frame 1801, a spring 1803, a lower fixing frame 1804 and mounting blocks 1802, wherein the top end of the lower fixing frame is connected with the spring, the top end of the lower fixing frame is connected with the upper fixing frame, the inner wall of the upper fixing frame is provided with a plurality of mounting blocks, and the outer wall of the primary sieve plate is connected with the mounting blocks through screws; the structure of the second-stage sieve plate buffer mechanism is the same as that of the first-stage sieve plate buffer mechanism, and the size of the second-stage sieve plate buffer mechanism is smaller than that of the first-stage sieve plate buffer mechanism; utilize sieve buffer gear can make one-level sieve, second grade sieve rock more steadily, prolong its life to the inclination of sieve can be adjusted to the experimenter to the design of a plurality of installation pieces, in order to confirm the best separation angle of coal cinder.

In the practice of the present invention, the catalyst is,

after all pipelines are connected, closing each inlet and each outlet, and checking the sealing performance of the device and whether the monitoring device can work normally;

opening the mixture inlet pipe 20, feeding the mixture into a feeding crusher 21 for crushing, and then discharging the mixture into a bin body 1; and all the devices in the bin body start to work normally.

The mixture firstly falls on the first-stage sieve plate 3 through the feeding pipe 102, coarse coal particles are left due to high-frequency vibration (vertical and horizontal vibration can be achieved) of the sieve, fine coal particles and water enter the second-stage sieve plate 5, and the coarse coal particles enter the left lower discharging plate 902 along the first-stage sieve plate 3; the fine coal particles and water enter the secondary sieve plate 5, and most of the fine coal particles also enter the discharging plate 902 along the inclined plane of the sieve screen due to the high-frequency vibration of the secondary sieve plate 5; the material on the discharging plate 902 can slide downwards to enter the second discharging hopper 23 at the lower left; then fine coal particles and most of water fall into an aggregate cavity enclosed by the water baffle 901 and the third-stage sieve plate 7 through the second-stage sieve plate 5, the water passes through the third-stage sieve plate 7 and is finally discharged from the coal slime water discharge pipe, and the fine coal particles are continuously stored in the aggregate cavity;

in the screening process, the heat-preserving pump 13 and the insulating hot air blower 1501 work simultaneously, the heat-preserving pump 13 heats heat-conducting media (water and gas) to enable the first heating panel 9011 and the second heating panel 9021 to keep a high-temperature state, and the first heating panel 9011 heats fine coal materials which are continuously gathered in the material collecting cavity, so that coal bed gas in the fine coal materials is desorbed; the second heating panel 9021 heats the blanking area at the top of the second heating panel, the insulating hot air blower 1501 discharges hot air to heat the blanking area at the bottom of the second heating panel, the heat insulation cotton plate 14 can prevent heat from dissipating upwards, so that a high-temperature blanking area is formed between the heat insulation cotton plate 14 and the discharging plate 902, large-particle coal materials and small-particle coal materials flowing through the high-temperature blanking area can be rapidly heated, and a large amount of coal bed gas in the large-temperature blanking area can be rapidly desorbed and sucked out; the desorbed coal bed gas floats to the top of the bin body, is finally discharged to a coal bed gas treatment tank 17 through an exhaust pipe 16, and is discharged and collected after being dried;

when the fine coal particles in the aggregate cavity are accumulated to a certain height and cannot be accumulated continuously, the feeding three-way valve 22 opens a channel of the other bin body 1, so that the crushed coal is discharged into the other bin body for screening; the discharge three-way valve 11 opens the fine coal discharge pipe 1101 and closes the slime water discharge pipe 1102; then the electric hydraulic rod 801 drives the third-stage sieve plate 7 to rotate downwards, the telescopic support rods 803 rotate along with the contraction, the third-stage sieve plate 7 rotates away from the water baffle 901, and fine coal in the aggregate cavity falls and flows out to the fine coal discharge pipe 1101; after the coal material in the material collecting cavity is discharged, the fine coal discharging pipe 1101 is closed again, the coal slime discharging pipe 1102 is opened, the electric hydraulic rod 801 drives the three-stage sieve plate 7 to rotate upwards for resetting, and the material collecting cavity can be blocked again;

all hydraulic jetting devices can be independently adjusted by a controller outside the cabin body, the water quantity and the hydraulic power can be controlled, and partial jetting directions and angles can be adjusted to effectively clean so as to achieve the research purpose. During operation, if no clogging of the screen has occurred and separation can be effected, the hydro jet can be shut off by means of an external control.

If the first-stage sieve plate is blocked, a hydraulic nozzle (which is a fixing device) carried by a hydraulic injection ring at the upper part can be opened to spray and wash the whole sieve surface to ensure that the sieve is through; each hydraulic jet ring can be independently controlled to be opened and closed, so that experimental tests and effect comparison are facilitated.

If the second-stage sieve plate is blocked, the second-stage sieve plate flushing mechanism 4 can be opened (the power of the second-stage sieve plate flushing mechanism is controlled by an external motor). The cleaning may be performed during the separation process or when the separation is stopped. During cleaning, hydraulic jet can be realized by controlling each external independent controller, and during cleaning, the brush 403 is close to the second-stage sieve plate to rotate, similar to a sweeping function, so that the second-stage sieve plate is cleaned (the rotating speed is controlled by the external controller); can move back and forth along the direction of the screen panel;

if the third-stage sieve plate is blocked, the third-stage sieve plate flushing mechanism 6 can be opened, namely a rotatable flushing sprayer; rotating downwards to impact the third-stage sieve plate and rotating upwards to wash the second-stage sieve plate;

if the instrument breaks down and needs to be overhauled, or serious screen blockage occurs, or long separation time needs to be occupied by replacing each screen according to experimental results, the control valve 42 outside the control bin body closes the channel entering the first bin body and opens the channel entering the second bin body, so that the mixture separation is continuously carried out. Then the sealing bin door can be opened to overhaul or replace or clean the internal components of the bin body.

All used motor vibration frequency and amplitude control heat energy, electric energy and rotational speed and migration speed, hydraulic power ability and velocity of flow, monitoring devices's such as the humidity of gas, concentration, temperature components and parts all communicate to external control cabinet, integrated intelligent control.

The water discharge valve is installed in the water discharge concentration device, and because the gas entering the pipeline may have water vapor, the water vapor is condensed into liquid water and then discharged into the gas collection device, so that the water level is raised. When the water level rises to a threshold, the valve needs to be opened to drain off excess water.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a contain continuous separation experimental apparatus of gas coal and water mixture which characterized in that: comprises a feed crusher; the multi-component separation device is connected in parallel at an outlet of the feeding crusher and comprises a bin body, a sealing bin gate and a feeding pipe are mounted on the top surface of the bin body, a first-stage sieve plate is mounted at the top inside the bin body, the feeding pipe extends downwards to the inlet end of the first-stage sieve plate, a second-stage sieve plate is arranged at the bottom of the first-stage sieve plate at intervals, a third-stage sieve plate is mounted at the bottom of the second-stage sieve plate at intervals, and the diameters of meshes of the first-stage sieve plate, the second-stage sieve plate and the third-stage sieve plate are sequentially reduced; the three-stage sieve plate is rotationally connected with the inner wall of the bin body, the bottom of the three-stage sieve plate is connected with a rotation supporting mechanism, and the rotation supporting mechanism is used for driving the three-stage sieve plate to rotate;

the bottom of the second-stage sieve plate is provided with a heat-insulating cover, the heat-insulating cover comprises a vertical plate, a discharge plate and a water baffle plate, the vertical plate is vertically fixed on the inner bottom surface of the bin body, the top end of the vertical plate is connected with the discharge plate which inclines upwards, the discharge plate is positioned at the bottom of an outlet of the second-stage sieve plate, the top end of the discharge plate is connected with the water baffle plate which inclines downwards, the water baffle plate extends downwards to one side of the third-stage sieve plate, the bottom end of the third-stage sieve plate is attached to the surface of the water baffle plate, an enclosed area between the third-stage sieve plate and the water baffle plate is a material collecting cavity, the bottom of the material collecting cavity is communicated with a first discharge hopper, a discharge three-way valve is installed at the outlet of the first discharge hopper, and the outlet of the discharge three-way valve is connected in parallel to a fine coal discharge pipe and a slime water discharge pipe; the area between the vertical plate and the inner wall of the bin body is communicated to the second discharge hopper;

2. The experimental device for continuous separation of mixture of coal containing gas and water as claimed in claim 1, wherein: the top of stripper is equipped with thermal-insulated cotton board relatively in parallel, be the high-temperature region between thermal-insulated cotton board, the stripper, the ejection of compact orbit of one-level sieve, second grade sieve all is located the high-temperature region.

3. The experimental device for continuous separation of mixture of coal containing gas and water as claimed in claim 2, wherein: the upper surface of thermal-insulated cotton board installs multiunit hot-blast mechanism that takes place, hot-blast mechanism is used for to high temperature district department discharge hot-blast.

4. The experimental device for continuous separation of mixture of coal containing gas and water as claimed in claim 3, wherein: the hot air generating mechanism comprises an insulating hot air blower, an air outlet cover, an inner air inlet pipe and an outer air inlet pipe; the insulating air heater is arranged on the top surface of the heat insulation cotton plate, the outlet of the insulating air heater is communicated with the air outlet cover, the air outlet cover is arranged on the bottom surface of the heat insulation cotton plate and is in a trapezoidal horn shape, the air inlet of the air outlet cover is connected with an inner air inlet pipe and an outer air inlet pipe in parallel, the inner air inlet pipe is arranged in the bin body, and the outer air inlet pipe extends out of the bin body.

5. The experimental device for continuous separation of mixture of coal containing gas and water as claimed in claim 1, wherein: the top installation one-level sieve of one-level sieve washes the mechanism, the both sides wall sliding connection of one-level sieve has the second grade sieve to wash the mechanism, the second grade sieve washes the top that the mechanism was arranged in the second grade sieve, the bottom of second grade sieve is installed tertiary sieve and is washed the mechanism, tertiary sieve washes the mechanism and rotates and install in the inner wall in the storehouse body.

6. The experimental device for continuous separation of mixture of coal containing gas and water as claimed in claim 2, wherein: the width of one-level sieve, second grade sieve and tertiary sieve increases in proper order, the width of tertiary sieve is the same with the width that keeps warm the cover, the width that keeps warm the cover is less than the width of thermal-insulated cotton board.

7. The experimental device for continuous separation of mixture of coal containing gas and water as claimed in claim 1, wherein: the rotation supporting mechanism comprises an electric hydraulic rod, a guide rail and a telescopic supporting rod, one end of the electric hydraulic rod is connected with the inner wall of the bin body, the other end of the electric hydraulic rod is connected with the tertiary sieve plate in a rotating mode, the two side walls of the tertiary sieve plate are provided with the guide rail, the bottom end of the telescopic supporting rod is connected to the bottom side wall of the water baffle plate in a rotating mode, the top end of the telescopic supporting rod is connected with a sliding block in a rotating mode, and the sliding block is embedded into the guide rail.

8. The experimental device for continuous separation of mixture of coal containing gas and water as claimed in claim 4, wherein: a first temperature sensor is embedded in the surface of the stripper plate, a second temperature sensor is installed on the side wall of the air outlet cover, and a methane concentration monitor, a gas temperature monitor, a gas humidity monitor and a gas pressure monitor are installed at the top of the side wall of the bin body; the first temperature sensor, the second temperature sensor, the methane concentration monitor, the gas temperature monitor, the gas humidity monitor and the gas pressure monitor are all electrically connected to the monitoring host box.

9. The experimental device for continuous separation of mixture of coal containing gas and water as claimed in claim 1, wherein: one end of the first-stage sieve plate is rotatably connected to the inner wall of the bin body, the other end of the first-stage sieve plate is mounted on the first-stage sieve plate buffer mechanism, one end of the second-stage sieve plate is rotatably connected to the inner wall of the bin body, the other end of the second-stage sieve plate is mounted on the second-stage sieve plate buffer mechanism, and the first-stage sieve plate buffer mechanism is mounted on the outer side of the second-stage sieve plate buffer mechanism.