JP3245387U - Emergency sorting device for coal supply system - Google Patents

Abstract

An object of the present invention is to provide an emergency sorting device for a coal supply system that has a simple structure and a wide range of applications.
An emergency sorting device includes a three-way coal drop pipe 1 and a sorting member 2, and the sorting member includes a fixed base, a rotating shaft, a vertical screen bar, and a horizontal screen bar. including, one end of the vertical screen bar is connected to the rotation axis, and there are a plurality of vertical screen bars, each of which is equally distributed at a preset interval, and the adjacent vertical screen bar is connected to the horizontal screen bar. connected by a bar, the rotating shaft is rotatably connected to the fixed base, the three-way coal drop pipe includes a first shell 11 and a second shell 12, the first shell being removably connected to the second shell; A fixed base is removably fixed between the first shell and the second shell.
[Selection diagram] Figure 1

Description

TECHNICAL FIELD The present invention relates to the field of coal transportation equipment for thermal power plants, and more particularly to emergency sorting equipment for coal supply systems.

Thermal power plants burn coal to generate thermal energy to generate electricity, and the coal used to generate electricity is transported to the thermal power plant by ship or land. Thermal power plants are equipped with dedicated coal lifting equipment and coal transportation equipment. A dedicated coal storage facility has also been installed, which can store approximately 20 days' worth of coal during normal power generation, ensuring stable power generation and coal supply. The coal supply process for thermal power generation companies is as follows. Coal is transported to a thermal power plant by water or land, unloaded by coal unloading equipment to a coal transportation system installed within the power plant, and transported to a coal storage yard by a coal conveyor for storage. Coal is loaded at a designated location using dedicated loading equipment, and then the coal is taken out from the coal storage yard according to the demand for coal for power generation, transported by conveyor to the raw coal storage of the power generation boiler, and pulverized by a coal feeder and mill. Coal is turned into charcoal and sent to the boiler for combustion, but the particle size of the coal entering the coal feeder and mill is usually limited to 30 mm or less, so coal larger than 30 mm may reduce the efficiency of the mill. , coal exceeding 100 mm may cause clogging of the coal feeder and stop the operation, and as a result, the feeder may stop supplying coal to the boiler, but in order to resume operation, The coal feeder must be unclogged by artificial cleaning, which takes time, and during this period the coal feeder stops and cannot supply coal, so the amount of coal supplied decreases and the thermal energy of combustion is reduced. decreases, and the power generation also decreases.For this reason, it can be seen that a coal feeder shutdown due to a large coal blockage is very harmful, but if multiple coal feeders shut down due to blockage within the same period, At the very least, the amount of power generation will decrease, and in the worst case, the thermal power generation unit will stop abnormally, causing a huge economic loss to the thermal power plant. Coal transported to power plants by ship, train, car, etc. is a mixture of coal blocks with different particle sizes, with the maximum particle size reaching 300 mm. Unable to meet mill feed particle size requirements. In order to avoid clogging due to large lumps, the coal transportation system is equipped with coal sorting and crushing equipment. Coal first enters the sorting equipment, and coal with a particle size larger than a specified value is sorted and transported to the crushing equipment. After being crushed and crushed, it is transported to a lower conveyor, and finally to a coal feeder, where it is fed into a boiler and burned.

Although sorting equipment and crushing equipment are arranged in the coal transportation system, in some special situations, large pieces of coal may still be transported into the coal feeder without being crushed, mainly due to the following There are cases where

1. If the coal crushing equipment installed in the coal transportation system malfunctions and cannot operate normally, the coal transportation system has two routes for supplying coal to raw coal warehouses, and these two coal transportation routes are mutually exclusive. One set of coal sorting equipment and one set of coal crushing equipment are arranged for each coal transportation route, but in the event of an abnormality, one equipment for each route may be out of order at the same time, which means that the sorting function is not available, so this situation is not likely to occur, but it may occur. If this happens, the only option is to supply coal to the raw coal storage by bypassing the sorting and crushing equipment, which may result in unstable coal supply to the coal feeder and the risk of unstable unit operation. arise.

2. In thermal power plant expansion projects and new/old unit replacement projects, coal storage land will be shared with the existing coal unloading system, but a new coal unloading system will be constructed; Since it is not possible to arrange sorting and crushing equipment, the only option is to place the sorting and crushing equipment in the coal unloading system, which means that the coal storage yard cannot be emptied and the required amount of coal storage must be maintained. The particle size of the unpulverized coal does not meet the coal usage requirements for the new unit, but this is a difficult problem to solve because it also needs to be used.

As a result of the above, if a failure occurs in the coal sorting module and coal crushing module of the existing coal feeding system, the only option is to transport the coal via the backup bypass facility, which will lead to instability in coal supply and further disrupt unit operation. Affects stability and affects power generation of power plants.

With this invention, if a failure occurs in the coal sorting module and coal crushing module of the existing coal supply equipment, the coal must be transported via the backup bypass equipment, which leads to instability in the coal supply and further prevents unit operation. The purpose is to provide an emergency screening device for coal supply systems against the deficiencies present in the prior art, which affect the stability of coal supply systems and affect the power generation of power plants.

The object of the present invention can be achieved by the following technical solutions.

An emergency sorting device for a coal supply system, comprising:
comprising a three-way coal drop pipe and a sorting member, the sorting member including a fixed base, a rotating shaft, a vertical screen bar, and a horizontal screen bar;
One end of the vertical screen bar is connected to a rotating shaft, the vertical screen bar is plural, and each vertical screen bar is distributed at equal intervals at preset intervals, and adjacent vertical screen bars are horizontally connected by a screen bar, the rotating shaft being rotatably connected to a fixed base, the three-way coal drop pipe including a first shell and a second shell, the first shell being removably connected to the second shell. and the fixed base is removably fixed between the first shell and the second shell.

Preferably, the three-way coal drop pipe includes a first discharge conduit and a second discharge conduit, and a three-way stopper is provided between the supply ports of the first discharge conduit and the second discharge conduit, One end of the three-way stopper is connected to an adjustment shaft, and the adjustment shaft is rotatably connected to the three-way coal drop pipe.

Preferably, a push arm is provided at one end of the adjustment shaft, the push arm is fixed perpendicularly to one end of the adjustment shaft, and an electric push rod is connected to one end of the push arm.

Preferably, a support frame is provided at the upper end of the second shell, the support frame is vertically fixed to one side of the second shell, and the fixation base is removably connected to the support frame, and A groove matching the contour of the upper surface of the fixed base is provided at a position corresponding to the lower end.

Preferably, the fixed base is connected to the support frame via bolts.

Preferably, the fixed base is a bearing holder, and the rotating shaft is rotatably connected to the bearing holder.

Preferably, the vertical screen bar has an arcuate shape, and a lower end of the vertical screen bar has an upwardly inclined arcuate structure.

Preferably, there is a plurality of horizontal screen bars, and the interval between adjacent horizontal screen bars is larger than the interval between two adjacent vertical screen bars.

Preferably, the rotating shaft is provided with a plurality of notches at preset intervals, the shape of the notches corresponds to the shape of the upper end of the vertical screen bar, and the vertical screen bar is Located within the notch.

Preferably, the apparatus further includes an unloader, the unloader including a plowshare and a support frame, the plowshare being rotatably connected to the support frame, the support frame being disposed above the conveyor belt, and the unloader including a plowshare and a support frame, the support frame being disposed above the conveyor belt, The shear is perpendicular to the conveyor belt and abuts the top surface of the conveyor belt.

Compared with the prior art, the present invention has the following advantages.
1. In this solution, when a failure occurs in both the coal sorting module and the coal crushing module, the first shell and the second shell of the three-way coal drop pipe are removed, and the fixed base of the sorting member is installed at the corresponding position. , a sorting structure composed of a vertical screen bar and a horizontal screen bar is located above the discharge pipe of one of the three-way coal drop pipes, thereby separating the coal entering from the inlet of the three-way coal drop pipe. Of these, those that can pass through the sorting structure, i.e. meet the size, fall onto the conveyor belt through one discharge line, and those that cannot pass through the sorting structure fall through another discharge line of the three-way coal drop pipe. and falls onto another conveyor belt, thus separating coal of various sizes. Even if a serious failure occurs in an existing coal sorter or coal crusher, normal operation can be maintained by efficiently adding sorting members, thereby avoiding power generation equipment shutdowns. In addition, the sorting member has a simple structure, has high sorting efficiency, is easy to attach and detach, and can be used when normal coal transportation is stopped, without adversely affecting coal transportation.

2. In this solution, the rotating shaft is rotatably connected to the bearing holder, and the distance between the lower end of the sorting member and the side of the discharge pipe for conveying coal that does not meet the size requirements can be adjusted. In addition, the push arm is driven by an electric push rod, and the adjustment shaft drives a three-way stopper to rotate, so that the inlet of the discharge pipe for coal that meets the size is higher than the conveyance pipe for coal that does not meet the size. Adjust the inlet of the discharge pipe covered by the sorting member to make it larger, meet the size, but reduce the amount of sorted coal with large coals, and increase the coal sorting efficiency.

1 is a schematic structural diagram of an emergency device according to the present invention; FIG. FIG. 3 is a schematic structural diagram of a sorting member according to the present invention. FIG. 3 is a schematic diagram of the mounting structure of the emergency device according to the present invention. FIG. 2 is a schematic diagram of the structure of unloading coal using the unloader according to the present invention. FIG. 2 is a schematic diagram of the structure of conveying coal in the opposite direction and unloading it using the conveyor belt according to the present invention.

In order to make the objectives, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be explained clearly and with reference to the drawings in the embodiments of the present invention. Although fully described, it will be appreciated that the described embodiments are some, but not all, embodiments. The components of embodiments of the invention are generally described and illustrated in the drawings herein and may be arranged and designed in a variety of different configurations.

Example 1
As shown in FIGS. 1 to 3, this embodiment provides an emergency sorting device for a coal supply system, including a three-way coal drop pipe 1 and a sorting member 2, the sorting member 2 has a fixed base 21 and a rotating shaft. 22, a vertical screen bar 23, and a horizontal screen bar 24,
One end of the vertical screen bar 23 is connected to the rotating shaft 22, and there are a plurality of vertical screen bars 23, each of which is distributed at equal intervals at preset intervals, and adjacent vertical screen bars 23 are horizontally distributed. Connected by a directional screen bar 24, the rotating shaft 22 is rotatably connected to the fixed base 21, the three-way coal drop pipe 1 includes a first shell 11 and a second shell 12, the first shell 11 is connected to the second shell 12 , and the fixed base 21 is removably fixed between the first shell 11 and the second shell 12 .

The working principle is as follows. If a failure occurs in both the coal sorting module and the coal crushing module, remove the first shell 11 and second shell 12 of the three-way coal drop pipe 1, install the fixed base 21 of the sorting member 2 in the corresponding position, and A sorting structure composed of a directional screen bar 23 and a lateral screen bar 24 is located above the discharge pipe of one of the 3-way coal drop pipes 1, so that the screening structure composed of a directional screen bar 23 and a lateral screen bar 24 is located above the discharge pipe of one of the 3-way coal drop pipes 1, so that the inlet of the 3-way coal drop pipe 1 enters from the inlet of the 3-way coal drop pipe 1. Of the coals, those that can pass through the sorting structure, i.e. meet the size, fall into the conveyor belt through one discharge pipe, those that cannot pass through the sorting structure fall on another discharge pipe of the three-way coal drop pipe 1 It falls through a conveyor belt onto another conveyor belt and thus the coal of various sizes is sorted out.

In this solution, when a failure occurs in both the coal sorting module and the coal crushing module, the first shell 11 and the second shell 12 of the three-way coal drop pipe 1 are removed, and the fixed base 21 of the sorting member 2 is fixed. The three-way coal drop pipe 1 is attached to the three-way coal drop pipe 1 by attaching the sorting structure composed of the longitudinal screen bar 23 and the horizontal screen bar 24 above the discharge conduit of one of the three-way coal drop pipes 1. Among the coals entering from the inlet of , those that can pass through the sorting structure, i.e., meet the size, fall into the conveyor belt via one discharge pipe, and those that cannot pass through the sorting structure fall into the three-way coal drop pipe 1 falls on another conveyor belt through different discharge pipes, and in this way, coal of various sizes is sorted out. Even if a serious failure occurs in the coal conveying device, the sorting member 2 can be used to maintain normal operation, thereby avoiding a stoppage of the power generation equipment. It is simple, has high sorting efficiency, and is easy to attach and detach.

In one preferred embodiment, the three-way coal drop pipe 1 includes a first discharge conduit 13 and a second discharge conduit 14, between the feed ports of the first discharge conduit 13 and the second discharge conduit 14. A three-way stopper 15 is provided, one end of the three-way stopper 15 is connected to an adjustment shaft 141, and the adjustment shaft 141 is rotatably connected to the three-way coal drop pipe 1.

Specifically, a push arm 142 is provided at one end of the adjustment shaft 141, the push arm 142 is fixed perpendicularly to one end of the adjustment shaft 141, and an electric push rod 143 is connected to one end of the push arm 142.

A support frame 4 is provided at the upper end of the second shell 12, the support frame 4 is vertically fixed on one side of the second shell 12, and the fixed base 21 is removably connected to the support frame 4, and the support frame 4 is fixed vertically on one side of the second shell 12. A groove matching the contour of the upper surface of the fixed base is provided at a position corresponding to the lower end. Fixed base 21 is connected to support frame 4 via bolts. The fixed base 21 is a bearing holder, and the rotating shaft 22 is rotatably connected to the bearing holder.

The rotating shaft 22 is rotatably connected to the bearing holder 21, and the distance between the lower end of the sorting member 2 and the side of the discharge pipe for conveying coal that does not meet the size requirements can be adjusted, and The push arm 142 is driven by the electric push rod 143, and the adjustment shaft 141 drives the three-way stopper 15 to rotate, so that the entrance of the coal discharge pipe that meets the size is larger than that of the coal transport pipe that does not meet the size. The inlet of the discharge pipe covered by the sorting member 2 is adjusted so that the size is met, but the amount of coal sorted with large coals is reduced, and the coal sorting efficiency is increased.

Specifically, the vertical screen bar 23 has an arcuate shape, and the lower end of the vertical screen bar 23 has an upwardly inclined arcuate structure. There are a plurality of horizontal screen bars 24, and the interval between adjacent horizontal screen bars 24 is larger than the interval between two adjacent vertical screen bars 23.

The size of the gap in the sorting member 2 may be larger than the size of the coal that meets the conditions, so that the coal that meets the conditions can be sorted by the sorting member 2.

The rotary shaft 22 is provided with a plurality of notches at preset intervals, and the shape of the notches corresponds to the shape of the upper end of the vertical screen bar 23. Located in

In one preferred embodiment, the device further includes an unloader 3, the unloader 3 including a plowshare 31 and a support frame, the plowshare 31 being rotatably connected to the support frame, the support frame being above the conveyor belt. A plowshare 31 is provided perpendicular to the conveyor belt and abuts the upper surface of the conveyor belt.

A support frame for an unloader 3 is provided above the conveyor belt for coal that does not meet the size conditions, and the coal on the conveyor belt is unloaded from the conveyor belt by a plowshare 31, and the unloaded coal is subjected to subsequent processing.

Referring to the above preferred embodiment, this example specifically provides the optimal embodiment as follows.

Typical coal transportation systems in thermal power plants include coal ships, transfer stations, belt conveyors, 3-way coal drop pipes, B-branch 3-way joints, A-branch 3-way joints, coal silos, active feeders, and coal sorting and crushing equipment. It often includes the following elements: house, A branch coal sorter, B branch coal sorter, A branch coal crusher, B branch coal crusher, raw coal storage, plow unloader, and coal bin.

The flow of coal transportation is as follows.

Coal is transported to the power plant by a coal ship, and after being unloaded from the ship, it is transported to a coal silo via multiple end-to-end connected conveyor belts for storage and supplying coal to the unit boiler. If so, it is transported from the coal silo to the belt conveyor at the bottom by an active feeder, then transported to the coal bin by multiple conveyors connected via belts, and then transported by a plow unloader according to the demand for coal. , the coal in the belt conveyor is unloaded into the corresponding raw coal storage, then enters the coal feeder located at the bottom of the raw coal storage, and is sent to the boiler system by the coal feeder to be burned.

In the coal transport system, coal is discharged from the coal silo and transported to the raw coal storage, and two coal transport routes, namely A branch and B branch, are arranged according to the design specifications, and the coal transport route in A branch coal transport route is All belt conveyors and equipment are named with an "A" to distinguish them from the B branch, and the same is true for the B branch coal transport route. Each coal transport path is an end-to-end connection of multiple belt conveyors, and the connecting device is a coal drop pipe. For switching between the two branches conveying coal, the coal drop pipe has a three-way function, ie, it is a three-way coal drop pipe. To switch from one transport route to the other, a three-way coal drop pipe must be provided in each transport route between the coal silo and the raw coal storage, thereby increasing the reliability of coal transport. can be increased. In this part of the coal transportation route, A branch coal sorter, B branch coal sorter, A branch coal crusher, B branch coal crusher are arranged, and after the coal is sorted, large coals are sent to the coal crusher equipment. The coal is sent to be crushed and processed by these facilities to ensure that the coal particle size is below the limit value and meets the requirements for feeding by coal feeders.

Two belt conveyors connected to each other along the coal transport direction in the coal transport route are divided into an upper belt conveyor and a lower belt conveyor, for example, the upper belt conveyor transports the coal to the lower belt conveyor and the lower belt conveyor. The belt conveyor is equipped with a head cover to prevent coal dust and coal from leaking outside, and a transfer station is installed at the transition point between the two belt conveyors for coal transport, and a coal sorter and coal The crusher is located in the sorting and crushing equipment house, the three-way coal drop pipe and the three-way coal drop pipe are located at the first transfer station for unloading coal from the coal silo, and the three-way coal drop pipe is located at the first transfer station for unloading coal from the coal silo. Coal transported by one belt conveyor is guided to a lower belt conveyor in coal transport route A or coal transport route B.

The three-way coal drop pipe is mainly composed of an upper coal inlet, that is, an upper head cover, a lower head cover, and the lower part has two coal drops: a 3-way A branch coal drop pipe and a 3-way B branch coal drop pipe. The two coal drop pipes are respectively aligned with different belt conveyors installed in parallel, and a three-way stopper is provided in the center, and the push arm of the three-way stopper is connected to an electric push rod. The three-way stopper rotates around the rotation axis, the inlets of the two lower coal drop pipes are opened and closed, and the coal at the inlet enters the opened lower coal drop pipe inlet; Thereby, the coal is guided to the lower belt conveyor on a different coal transport route, thereby switching or changing the coal transport route.

As shown in FIGS. 1 to 3, in this solution, a temporary sorting member is added to the coal transportation route, and the sorting member consists of a vertical screen bar 23, a horizontal screen bar 24, a rotating shaft 22, and a bearing holder 21. The coal is sorted by the opening of the vertical screen bar 23 and the horizontal screen bar 24, and since the vertical screen bar 23 has an arc-shaped feature, it is possible to improve the coal sorting efficiency. The spacing between the screen bars 23 is set to the maximum coal particle size that does not cause clogging of the coal feeder.

This embodiment provides the following arrangement of the sorting member 2. The upper coal transport route from the coal silo to the raw coal storage is divided into the first three-way coal drop pipe along the coal transport direction, that is, the B branch three-way coal drop pipe and the A branch three-way coal drop pipe. members are arranged, and a sorting member is arranged on one of the two coal transport routes. The upper part of the head cover of the A-branch upper belt conveyor is removed, the upper part of the 3-way coal drop pipe is opened, and support bases for supporting and fixing the rotating shaft of the sorting member are fixed on each side of the upper opening of the lower part of the head cover. will be established. The sorting member is then placed and fixedly connected to the support base by bolts with the bearing holder of the sorting member, in this way the sorting member is rotatable through a predetermined angle with respect to the center of the bearing holder. , and the motorized pushrod is driven to push the three-way stopper to a particular position, such position being offset by a predetermined distance from the centerline of the top openings of the two coal drop pipes, and approximately three-way from the top openings of the two coal drop pipes. /5 position, thereby increasing sorting efficiency and reducing sorted coal with small particle size but large difference coal.

The other end of the longitudinal screen bar 23 of the sorting member 2 is wrapped on the top of the three-way stopper, so that one passage of the two unloaded coal drop pipes of the three-way coal drop pipe is provided with a sorting function. , With such a sorting member, when the particle size of the passing coal meets the requirements and the sorting member is installed in the desired position, the head cover upper part can be reinstalled, and the head cover has a rotation axis of the sorting member to be installed. A groove corresponding to the groove is provided.

The large coal sorted by the sorting member 2 passes through the 3-way A branch coal drop pipe and falls onto the B branch lower belt conveyor. When the shear 31 falls onto the surface of the conveyor belt of the belt conveyor and operates, the plow shear 32 separates the large coal on the belt conveyor from the coal transport path, and then this large coal is subjected to a specific crushing treatment with a vehicle. It is sent to a field, processed, and then reused. When sorting is no longer necessary, the sorting member is removed from the coal transport route. The screening member is easy to remove and does not affect the coal supply required for combustion in the boiler.

This example also explains the operating principle of the sorting member.

In the coal transportation system of a thermal power plant, there are generally two coal transportation routes from the coal silo to the raw coal storage, and each coal transportation route is equipped with a three-way coal drop pipe. Either of the two routes can transport coal using part of the other party's coal transport equipment, thereby improving the reliability of coal transport. The coal supply capacity of either of these two coal transport routes can meet the coal supply required for the normal power generation of the boiler, therefore, these two coal transport routes are backups for each other and these characteristics Therefore, the coal supply to the boiler can be satisfied by a single coal transport route while ensuring the operational reliability of the single route conveyor. At the location of the three-way coal drop pipe, the upper belt conveyor of one path can transport coal to the lower belt conveyor of two paths, thereby transporting coal in one path. The coal is divided into two lower belt conveyors by a three-way coal drop pipe, and due to this feature, a sorting member is placed in the three-way coal drop pipe, and coal with an appropriate particle size is divided into two lower belt conveyors by a three-way coal drop pipe. Coal lumps with a particle size larger than the aperture size of the sorting member fall on the other lower belt conveyor, and the coal transported on the upper belt conveyor is sorted by the sorting member placed on the three-way coal drop pipe. , coal with an appropriate particle size is transported to the raw coal storage via the coal transport route and fed to the boiler system, and large coal transported by the belt conveyor on the other coal transport route is processed by the following two methods: However, as shown in Figure 4, one method is to install a plow unloader on the belt conveyor to unload large pieces of coal from the coal transport route, and as shown in Figure 5, another method is to unload the large coal from the coal transport route. The transport direction can be changed by spanning a short (wheelbase less than 1 meter) belt conveyor, i.e. the conveyor runs in half direction, and also by changing the rear part of the guide chute and moving the large coal to the tail of the belt conveyor. It is to wholesale from.

The above two methods require few changes to the belt conveyor, are easy to install and remove, are easy to modify and restore the coal transport system, take less time to install and remove, and take advantage of normal coal transport downtime. This can be done without any negative impact on coal transportation, and large pieces of coal are transported by vehicle to specific locations where they are crushed and then reused. The temporary sorting member may only be added to one three-way coal drop pipe, or it may be added to two paths, depending on the actual needs, but once the sorting member is added, the original coal transport Since it changes coal supply from two routes in the system to one route, such a method is a temporary emergency plan, and once the sorting and crushing equipment inherent in the coal transportation system becomes normal. The temporary sorting member is removed from the coal transportation system and the original coal transportation method is restored. This method ensures normal and stable power generation and continuous supply of coal at thermal power plants, and in the case of renovation or expansion of thermal power plants, new units are built, but sorting and crushing equipment is not in operation. If not, or newly installed sorting and crushing equipment is placed in the coal transport route at the input section of the coal silo, and there is a certain amount of coal in the coal silo that has not been sorted or crushed, this portion of coal is sent to the coal feeder. This is an emergency support plan provided in case direct delivery is not possible.

All coal transportation systems at thermal power plants in China have the same configuration, so even if a similar problem occurs with a coal transportation system at a thermal power plant, this method can be used to resolve the problem. It can maximize the stable supply of coal to thermal power generation units, and has a wide range of applications.

Above, better specific embodiments of the present invention have been described in detail. It should be understood that those skilled in the art can make many amendments and changes based on the concept of the invention without creative effort. Therefore, if it is a technical solution that can be obtained by a person skilled in the art based on the concept of the present invention, based on the prior art, through logical analysis, inference, or limited experimentation, it is defined in the scope of utility model registration claims. shall be included within the scope of protection provided.

13 Directional coal drop pipe 11 First shell 12 Second shell 13 First discharge pipe 14 Second discharge pipe 15 Three-way stopper 141 Adjustment shaft 142 Push arm 143 Electric push rod 2 Sorting member 21 Fixed base 22 Rotating shaft 23 Vertical Directional screen bar 24 Lateral screen bar 3 Unloader 31 Plowshare

Claims (9)

An emergency sorting device for a coal supply system, comprising:
comprising a three-way coal drop pipe and a sorting member, the sorting member including a fixed base, a rotating shaft, a vertical screen bar, and a horizontal screen bar;
One end of the vertical screen bar is connected to a rotating shaft, the vertical screen bar is plural, and each vertical screen bar is distributed at equal intervals at preset intervals, and adjacent vertical screen bars are horizontally connected by a screen bar, the rotating shaft being rotatably connected to a fixed base, the three-way coal drop pipe including a first shell and a second shell, the first shell being removably connected to the second shell. An emergency sorting device for a coal supply system, wherein the fixed base is removably fixed between a first shell and a second shell. The three-way coal drop pipe includes a first discharge pipe and a second discharge pipe, and a three-way stopper is provided between the supply ports of the first discharge pipe and the second discharge pipe, and the three-way coal drop pipe includes a first discharge pipe and a second discharge pipe. The emergency sorting device for a coal supply system according to claim 1, characterized in that one end of the stopper is connected to an adjustment shaft, and the adjustment shaft is rotatably connected to a three-way coal drop pipe. 2. A push arm is provided at one end of the adjustment shaft, the push arm is fixed perpendicularly to one end of the adjustment shaft, and an electric push rod is connected to one end of the push arm. An emergency sorting device for a coal supply system as described in . A support frame is provided at the upper end of the second shell, the support frame is vertically fixed to one side of the second shell, and the fixed base is removably connected to the support frame and corresponds to the lower end of the first shell. 2. The emergency sorting device for a coal supply system according to claim 1, further comprising a concave groove that conforms to the contour of the upper surface of the fixed base. The emergency screening device for a coal supply system according to claim 4, characterized in that the fixed base is connected to a support frame via bolts. The coal supply system according to claim 1, wherein the fixed base is a bearing holder, the rotating shaft is rotatably connected to the bearing holder, and the vertical screen bar has an arcuate shape. emergency sorting device. The coal supply system according to claim 1, wherein the horizontal screen bars are plural, and the interval between adjacent horizontal screen bars is larger than the interval between two adjacent vertical screen bars. Emergency sorting device. The rotating shaft is provided with a plurality of notches at preset intervals, the shape of the notches corresponds to the shape of the upper end of the vertical screen bar, and the vertical screen bar is disposed within the notches. The emergency sorting device for a coal supply system according to claim 1, characterized in that it is located at. further comprising an unloader, the unloader including a plowshare and a support frame, the plowshare rotatably connected to the support frame, the support frame disposed above the conveyor belt, and the plowshare perpendicular to the conveyor belt. 9. The emergency sorting device for a coal supply system according to claim 8, wherein the device is in contact with the upper surface of the conveyor belt.

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