CN218465033U

CN218465033U - Dust suppression cover device

Info

Publication number: CN218465033U
Application number: CN202222200254.0U
Authority: CN
Inventors: 杨卓; 吴桐; 张恺; 王爱爱; 龙东生; 周国驰
Original assignee: Ccteg Shenyang Engineering Co ltd
Current assignee: Ccteg Shenyang Engineering Co ltd
Priority date: 2022-08-22
Filing date: 2022-08-22
Publication date: 2023-02-10
Anticipated expiration: 2032-08-22

Abstract

A dust suppression cover device belongs to the technical field of strip mines. The dust suppression device comprises a dust suppression cover, a belt curtain and a lining, wherein the belt curtain and the lining are arranged above a vehicle inlet of the dust suppression cover and are used for blocking dust overflow; the first ducts arranged at the four corners outside the dust suppression cover and the second ducts arranged on the edges above the vehicle inlet are used for balancing pressure difference caused by external wind power; a negative pressure explosion-proof fan and a telescopic air pipe are arranged in the dust suppression cover and used for enhancing the trend of inducing the dust-containing gas to circularly move; the upper part in the cover body is connected with a dust suppression brush through a grate to realize the interception of dust in the upward moving dust-containing gas; and an inner sail is transversely hung between the two car feeding and discharging openings in the dust suppression cover and is used for reducing the wind passing through the hall in the environment. Compared with the traditional dust removal mode, the dust suppression cover can induce the dust-containing gas to circularly move in the cover body by means of material flow driving, so that the dust suppression effect of the device is not influenced by strong wind of the external environment, all dust is controlled in the cover body without escaping, the energy is saved, the consumption is reduced, and the high-efficiency dust control effect is ensured.

Description

Dust suppression cover device

Technical Field

The utility model belongs to the technical field of the opencut, in particular to press down dirt cover device.

Background

The dust dissipation caused by the falling of the materials into the receiving hopper is a main pollution source generated by the field operation of the open pit mine crushing station. At present, most of strip mine discharging pits are of open structures, dust escapes from all places due to turbulent air flow caused by falling and arousing of materials in the unloading process of a truck, and meanwhile, due to the fact that the conditions of the discharging pits of a dump truck are complex, part of dust-containing air flow of a crushing station escapes outwards through a chute or other parts with poor sealing performance, dust leakage and more dust spraying points exist in the dust removing process, and especially when the wind speed of the external environment is high, the dust pollution of the working area of the crushing station can be aggravated.

At present, various technical measures are provided in the aspect of dust removal of a discharge opening of a primary crushing station of a strip mine, including wet dust removal, such as a dry fog dust suppression method, a water spraying dust suppression method and the like, and dry dust removal, such as a dust remover method, a closed dust suppression method and the like.

Therefore, the dust removal technical problem which needs to be solved urgently at present is to find a dust removal method which is low in energy consumption, high in dust control efficiency and free of seasonal climate limitation so as to solve dust pollution at the opening of a discharge hopper of a primary crushing station of a strip mine.

Disclosure of Invention

To the not enough of prior art existence, the utility model aims at providing a press down dirt cover device.

The technical scheme adopted by the utility model is as follows: a dust suppression cover device is technically characterized by comprising a dust suppression cover consisting of a supporting structure and a light film which is arranged around the supporting structure in a sealing way, wherein a belt blocking curtain and an inner lining which are used for isolating the inside and the outside of the dust suppression cover are hung above a vehicle inlet of the dust suppression cover; three negative pressure explosion-proof fans used for inducing the cyclic motion trail of the dust-containing gas are respectively arranged above the discharging opening of the inlet wagon, three telescopic air pipes are led out from the negative pressure explosion-proof fan positioned at the most middle position above the discharging opening of the inlet wagon, one telescopic air pipe is positioned in the center of the discharging side, the air outlet of the telescopic air pipe faces the ground, and the air outlets of the other two air pipes face the two sides of the discharging opening of the inlet wagon; a grate is arranged above the inner wall of the dust suppression cover, and a dust suppression brush for intercepting dust carried by dust-containing airflow is hung on the grate; an inner sail is hung on the inner wall of the dust suppression cover and is positioned in the center of the inner part of the dust suppression cover and perpendicular to the direction of entering the vehicle, so that ambient wind is prevented from passing through the dust suppression cover to form cross wind.

In the scheme, the gap between the inner sail and the light film is blocked by a belt.

In the above scheme, press down the inside dust suppression brush of dirt cover above erect the girder steel corridor, the floor that supplies personnel to maintain and overhaul the usefulness has been laid in the girder steel corridor.

In the scheme, the infrared sensor used for monitoring the whole unloading process of the vehicle by a user is arranged at the inlet and outlet, the dust suppression cover is provided with the camera and the dust concentration monitor, and the infrared sensor, the camera and the dust concentration monitor are respectively connected with the electric control platform.

In the above scheme, the negative pressure explosion-proof fan is erected with the fossil fragments, and the outside parcel of fossil fragments has the dust removal to cross the filter bag.

In the scheme, the top of the keel is of a cone structure.

Among the above-mentioned scheme, what press down each installation of dirt cover top four corners is used for the first duct with the drainage of environment wind current, the air intake of first duct is parallel with the direction of advancing of pressing down the dirt cover, and the air outlet of first duct is towards ground.

In the scheme, a second duct for guiding the environmental wind flow is additionally arranged on the edge above the air inlet outside the dust suppression cover.

In the scheme, a belt retaining curtain is replaced by a retaining curtain lifting transmission device, the retaining curtain lifting transmission device comprises a cross beam, a corner sensor, a first speed reducing motor, a dustproof curtain, a roller, a second speed reducing motor, a belt pulley, a belt, a compression roller, a spring and a compression roller frame, the cross beam is fixedly connected to a door frame longitudinal beam at a material inlet and discharge port of a dust suppression cover, the compression roller is pressed above the dustproof curtain by the compression roller frame, one end of the compression roller frame is fixed to the cross beam through a support, and the other end of the compression roller frame is sleeved on the compression roller; the support is provided with a spring for returning the swing arm, and the free end of the spring is hooked on the swing arm; an output shaft of a first speed reducing motor fixed at one end of the cross beam is connected with the roller and drives the roller to rotate, and the dustproof curtain is wound on the roller and rolls up or falls down along with the rotation of the roller;

a transmission part for enabling the compression roller to rotate is connected between the compression roller and the cross beam and comprises connecting arms and a belt pulley arranged between the two connecting arms, one end of each connecting arm and one end of each belt pulley are sleeved on the other support of the cross beam, the other end of each connecting arm and the other end of each belt pulley are sleeved on the compression roller, a belt wound on the two belt pulleys rotates along with a second speed reducing motor connected to the belt pulley on one side, and meanwhile, the compression roller is driven to rotate in the direction opposite to that of the roller; the connecting arm is also provided with an angle sensor which is connected with the PLC controller and is used for detecting a relative included angle between the compression roller frame and the cross beam in real time, the PLC controller is simultaneously connected with the first speed reduction motor and the second speed reduction motor, and the forward rotation and the reverse rotation of the first speed reduction motor and the second speed reduction motor are controlled by utilizing a feedback signal of the angle sensor so as to realize the rolling or the falling of the dustproof curtain.

The beneficial effects of the utility model are that: the dust suppression cover device comprises a dust suppression cover, a belt blocking curtain and a lining, wherein the belt blocking curtain and the lining are arranged above a feeding hole of the dust suppression cover and are used for blocking dust overflow; the first ducts arranged at the four corners outside the dust suppression cover and the second ducts arranged on the edges above the vehicle inlet outside the dust suppression cover are used for balancing pressure difference caused by external wind power; a negative pressure explosion-proof fan is arranged in the dust suppression cover, and three telescopic air pipes are led out from the negative pressure explosion-proof fan and used for enhancing the effect of inducing the circulating motion trend of the dust-containing gas; the top of the dust suppression cover is connected with a dust suppression brush through a grate to realize the interception of dust in the dust-containing gas moving upwards; and an inner sail is hung between two car feeding and discharging openings in the dust suppression cover and used for reducing the wind passing through the hall in the environment. Compared with the traditional dust removal mode, the dust suppression cover can induce the dust-containing gas to circularly move in the cover body by means of material flow driving, so that the dust suppression effect of the device is not influenced by strong wind of the external environment, all dust is controlled in the cover body without escaping, the device can realize energy conservation and consumption reduction, simultaneously ensure the high-efficiency dust control effect, and can be better applied to production operation sites with severe weather conditions.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and 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 creative efforts.

FIG. 1 is a schematic structural view of a dust suppressing cover device in an embodiment of the present invention;

FIG. 2 is a schematic view of the structure of the corridor for wind pipes and steel beams according to the embodiment of the present invention;

fig. 3 is a schematic view of the fan keel structure in the embodiment of the present invention;

fig. 4 is a structural block diagram of a control platform according to an embodiment of the present invention;

FIG. 5 is a schematic structural view of a curtain lifting transmission device according to an embodiment of the present invention;

in the figure, a steel structure is 1, a light film is 2, a vehicle inlet and outlet is 3, a dust suppression brush is 4, a first duct is 5, a negative pressure explosion-proof fan is 6, a camera is 7, a second duct is 8, a belt check curtain is 9, a canvas lining is 10, an inner sail is 11, a dust concentration meter is 12, an air pipe is 13, an infrared sensor is 14, a steel beam corridor is 15, a keel is 16, a dust removal filter bag is 17, a check curtain lifting transmission device is 18, and an electric control platform is 19.

Detailed Description

The above objects, features and advantages of the present invention will be more clearly understood and appreciated, and the present invention will be described in more detail with reference to the accompanying drawings 1 to 4 and the following detailed description.

Example 1:

the dust suppression cover device adopted by the embodiment comprises a dust suppression cover consisting of a support structure and a light film 2, wherein the dust suppression cover adopts a steel structure 1 as the support structure, and the periphery of the steel structure 1 is formed by sealing the light film 2. It has two relative car discharge openings 3 to press down the dirt cover, every 3 tops of car discharge openings of advancing have all been articulated multilayer belt shelves curtain 9 and canvas inside lining 10, belt shelves curtain 9 and inside lining next-door neighbour set up, and outside-in belt shelves curtain and inside lining length lengthen gradually, form the multichannel at 3 departments of car discharge openings of advancing and seal, belt keeps off curtain 9 and canvas inside lining 10's effect and is the reinforcing and presses down the inside and outside isolated performance of dirt cover, it is excessive to prevent to cover internal dust when the truck is unloaded to influence by the environmental wind. The belt check curtain 9 of the embodiment can also adopt an automatic lifting structure, the check curtain 9 is fixed on a steel structure roller, and the roller is rotated according to the field situation to adjust the height of the check curtain 9.

This embodiment respectively installs a first duct 5 in pressing down dirt cover outer wall top four corners, and the air intake of first duct 5 is parallel with the direction of advancing the car, and the air outlet is towards ground, respectively installs a second duct 8 on pressing down the outer car mouth of advancing edge of dirt cover, and second duct 8 plays the effect to the environmental wind current drainage, and the outside positive and negative pressure difference of dust cover that leads to the fact when balanced external incoming air weakens the positive and negative pressure difference and to pressing down the inside dusty gas of dirt cover and to the induced influence that the outside spilled over.

This embodiment all is provided with three negative pressure explosion-proof fan 6 above every 3 discharge openings that advance the car, and negative pressure explosion-proof fan 6 is fixed on the dust suppression cover inner wall. A keel 16 is erected around the negative pressure explosion-proof fan 6, the top of the keel 16 is of a cone structure to prevent dust accumulation, one or more layers of dust removal filter bags 17 are wrapped outside the keel 16, and the dust removal filter bags 17 are used for preventing dust-containing airflow from entraining dust to overflow the cover body through the fan. The negative pressure explosion-proof fan 6 can rotate forward and backward when the truck unloads, and the effect is to maintain the internal negative pressure state of the dust suppression cover during forward transmission, enhance the induction of the circulating motion track of the dust-containing gas, suppress the motion trend of dust to the outside of the dust suppression cover, and the back-blowing filter bag plays a role in preventing dust accumulation in the dust removal filter bag 17 during reverse rotation. Three scalable tuber pipes 13 are drawn forth to the explosion-proof fan of negative pressure of this embodiment most middle position above advancing car discharge opening 3, and three tuber pipes 13 are located interior sail 11 respectively and correspond the center of discharge side and press down the inside discharge opening both sides of dirt cover, and the height is adjusted according to field application needs, and the effect of tuber pipe 13 is the induced adsorption of reinforcing to excessive dirty gas. Double-deck dust suppression brush 4 is hung through the installation grate in the inside top of dust suppression cover, and dust suppression brush 4 plays the dust of intercepting most dusty air current and smuggleing secretly, weakens dusty air current and receives the induced trend that makes progress of fan and finally follow the outside motion of fan wind direction dust suppression cover.

Press down the inside top that is located and presses down dirt brush 4 of dirt cover and erect girder steel corridor 15, the floor is laid to the girder steel, and the effect makes things convenient for personnel to cover internal structure and part and maintain.

An inner sail 11 is arranged in the middle of the interior of the dust suppression cover, a gap between the inner sail 11 and the light film 2 is plugged through a belt, and the effect is that ambient wind penetrates through the cover body to form the effect of suppressing the induction effect when the opposite side is unloaded simultaneously.

An infrared sensor 14 is arranged at a feeding and discharging opening 3 and used for monitoring the whole vehicle discharging process, a camera 7 and a dust concentration monitor 12 are arranged in a dust suppression cover, the functions of full system monitoring and real-time monitoring and early warning of discharging of the dust suppression cover are achieved, the infrared sensor 14, the camera 7 and the dust concentration monitor 12 in the embodiment are respectively communicated with an electric control platform 19, and the electric control platform 18 is used for carrying out combined control on a fan, a camera, operation and monitoring equipment such as a dust concentration meter and the like of the dust suppression system, an infrared sensor of the discharging system, and an illuminating and dump truck.

The principle of the dust suppression cover device in the embodiment is as follows:

1) And (3) induction circulation: in-process is unloaded to the truck, the car hopper is raised and is done the action of unloading, can disturb air around and roll and take partial air to get into and receive the coal pit when the material falls, the material accomplishes the spatial position transform in the very short time and leads to the regional negative pressure that forms of card rear of a vehicle portion in the discharge pit, when the material falls to discharge pit blanking point entrance, there is certain pile up space, according to the energy conservation principle, reverse kinetic energy can be turned into to partial potential energy, granule and dust that the quality is littleer, the reverse velocity of production is big more, take a large amount of air of book once more to spread around, form the malleation. The dust-containing gas generated along with the movement of the materials generates a closed-loop upward vortex movement trend under the action of pressure difference.

2) And (3) induction circulation strengthening: the use of the negative pressure explosion-proof fan and the air pipe can ensure that the internal space of the cover body is kept in a relative negative pressure state in the process of the entering and exiting of the truck, the trend of upward vortex motion of dust-containing gas is enhanced, and more dust-containing gas is induced to upwards contact a dust suppression area (dust suppression brush layer). When the dusty gas regularly passes through the dust suppression area (dust suppression brush layer), the potential energy of a vortex field can be reduced, most of dust can be intercepted and automatically settled, a small amount of dusty gas entrained with the dust can pass through the dust suppression area and escape to the outside of the cover along the wind direction of the negative-pressure explosion-proof fan, a filter cloth bag is wrapped above the fan to intercept the small amount of dust, and finally the purpose of intercepting all the dust in the cover body is achieved.

Example 2:

the difference between the embodiment and the embodiment 1 is that the belt curtain 9 of the embodiment is replaced by a curtain lifting transmission device 18, and the specific structure is as follows: the device comprises a cross beam 181, a rotation angle sensor 182, a first reducing motor 183, a dustproof curtain 184, a roller 185, a second reducing motor 186, a belt pulley 187, a belt 188, a press roller 189, a spring 1810 and a press roller frame 1811, wherein two ends of the cross beam 181 are fixed on a door frame longitudinal beam of a dust suppression cover inlet and outlet 3 of a vehicle, the roller 185 is connected to the cross beam 181 through a bearing inner ring and is connected with a shaft positioned in the middle of the roller 185 through the bearing inner ring, the shaft of the roller 185 is connected with an output shaft of the first reducing motor 183, one end of the dustproof curtain 184 is fixed on the roller 185, and the first reducing motor 183 drives the roller 185 to rotate to realize rolling and unrolling of the dustproof curtain 184. The compression roller 189 is pressed above the roller 185 by a compression roller frame 1811, one end of the compression roller frame 1811 is fixed on the cross beam 181 through a support, the other end is sleeved on the compression roller 189, a spring 1810 is arranged on the support, the free end of the spring 1810 is hooked on the swing arm, the compression roller 189 is guaranteed to be pressed on the dustproof curtain 184 all the time, and the dustproof curtain 184 is tightly wound on the roller 185. The rotation directions of the pressure roller 189 and the roller 185 are always opposite, which facilitates smooth and reliable rolling and unrolling process of the dust curtain 184. In the embodiment, three supports are adopted to respectively fix three compression roller frames positioned at the head part, the middle part and the tail part of the cross beam.

In this embodiment, a transmission component for rotating the pressure roller 189 is further connected between the pressure roller 189 and the cross beam 181, the transmission component includes a connecting arm and a belt pulley arranged between the two connecting arms, one end of the connecting arm and one end of the belt pulley are sleeved on a support located in the middle of the cross beam 1811, the other end of the connecting arm and the other end of the belt pulley are sleeved on the pressure roller 189, a belt wound on the two belt pulleys rotates along with a second speed reducing motor 186 connected to the belt pulley on one side, and the pressure roller 189 is driven to rotate in the direction opposite to that of the roller 185. An angle sensor 182 connected with the PLC controller is further disposed on the connecting arm, the angle sensor 182 is used for detecting a relative angle between the roller frame 1811 and the cross beam 181 in real time, and the PLC controller adjusts the rotation speed of the second reduction motor 186 by acquiring data of the real-time angle, so as to ensure that the linear velocity of the pressing roller 189 at the entry point of the dust curtain 184 is always the same as the linear velocity of the roller 185. When the dust curtain 184 is completely wound on the roller 185, the rotation angle sensor 182 feeds back a signal to the PLC controller, the PLC controller sends a stop command and automatically switches to a reverse rotation state, and the falling motion of the dust curtain 184 is automatically started when the PLC controller is powered on next time. When the dust curtain 184 completely falls, the rotation angle sensor 182 feeds back a signal to the PLC controller, the PLC controller sends a stop command and automatically switches to a reverse rotation state, and the winding of the dust curtain 184 is automatically started when the power is turned on next time.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A dust suppression cover device is characterized by comprising a dust suppression cover consisting of a support structure and a light film which is arranged around the support structure in a sealing way, wherein a belt blocking curtain and an inner lining which are used for isolating the inside and the outside of the dust suppression cover are hung above a vehicle inlet of the dust suppression cover; three negative pressure explosion-proof fans used for inducing the cyclic motion trail of the dust-containing gas are respectively arranged above the discharging opening of the inlet wagon, three telescopic air pipes are led out from the negative pressure explosion-proof fan positioned at the most middle position above the discharging opening of the inlet wagon, one telescopic air pipe is positioned in the center of the discharging side, the air outlet of the telescopic air pipe faces the ground, and the air outlets of the other two air pipes face the two sides of the discharging opening of the inlet wagon; a grate is arranged above the inner wall of the dust suppression cover, and a dust suppression brush for intercepting dust carried by dust-containing airflow is hung on the grate; hang interior sail on the dirt guard inner wall, interior sail is located the inside center of dirt guard, and the perpendicular to advances the car direction, avoids environment wind to form cross the wind at the time of passing dirt guard in-process.

2. A dust suppressing cover apparatus as claimed in claim 1, wherein the gap between said inner sail and light film is closed by a strap.

3. A dust suppressing cover device as defined in claim 1, wherein a steel beam corridor is erected above the dust suppressing brush inside the dust suppressing cover, and a floor for maintenance and inspection by personnel is laid in the steel beam corridor.

4. The dust suppressing cover device as claimed in claim 1, wherein an infrared sensor for monitoring the whole unloading process of the vehicle is arranged at the unloading port of the vehicle, a camera and a dust concentration monitor are arranged on the dust suppressing cover, and the infrared sensor, the camera and the dust concentration monitor are respectively connected with the electric control platform.

5. A dust suppressing cover device as recited in claim 1, wherein a keel is erected on said negative pressure explosion-proof fan, and a dust removing filter bag is wrapped outside said keel.

6. A dust suppressing cover apparatus as claimed in claim 5, wherein the top of said keel is of a pyramidal configuration.

7. The dust suppressing cover device as claimed in claim 1, wherein four corners of the upper part of the dust suppressing cover are respectively provided with a first duct for guiding the ambient wind flow, an air inlet of the first duct is parallel to the vehicle entering direction of the dust suppressing cover, and an air outlet of the first duct faces the ground.

8. A dust suppressing cover device as defined in claim 1 or 7, wherein a second duct for guiding the flow of ambient wind is additionally installed at the upper edge of the dust suppressing cover outer inlet.

9. The dust suppressing cover device as claimed in claim 1, wherein the belt curtain is replaced by a curtain lifting transmission device, the curtain lifting transmission device comprises a cross beam, a rotation angle sensor, a first speed reducing motor, a dust-proof curtain, a roller, a second speed reducing motor, a belt pulley, a belt, a press roller, a spring and a press roller frame, the cross beam is fixedly connected to a door frame longitudinal beam of the dust suppressing cover feeding and discharging opening, the press roller is pressed above the dust-proof curtain by the press roller frame, one end of the press roller frame is fixed on the cross beam through a support, and the other end of the press roller frame is sleeved on the press roller; the support is provided with a spring for returning the swing arm, and the free end of the spring is hooked on the swing arm; an output shaft of a first speed reducing motor fixed at one end of the cross beam is connected with the roller and drives the roller to rotate, and the dustproof curtain is wound on the roller and is rolled up or falls down along with the rotation of the roller;