CN212953225U - Storehouse and transfer vehicle blowing connecting device are stored to tailings - Google Patents

Abstract

The utility model provides a discharging connecting device of a tailings storage bin and a transfer vehicle, which comprises the tailings storage bin, a carriage of the transfer vehicle and a telescopic connecting joint; a discharge hole is formed in the bottom of the tailing storage bin; the top end of the carriage is provided with a carriage cover, and a sealed carriage is formed; the top of the compartment cover is provided with a feeding hole; the telescopic connecting joint is connected between the discharge hole of the tailing storage bin and the feed inlet of the compartment cover in an assembling and disassembling mode. The utility model has the advantages of simple structure, low investment, reliable operation, economy and practicality; when putting into the carriage of transporting the vehicle with the tailings in storing the storehouse, can realize through telescopic attach fitting that the tailings is stored the full sealing connection between the discharge gate in storehouse and the feed inlet of railway carriage or compartment lid, can guarantee that no dust and raise dust spill over in blowing operation process, fundamentally has solved the problem of dust pollution environment.

Description

Storehouse and transfer vehicle blowing connecting device are stored to tailings

Technical Field

The utility model belongs to the technical field of the environmental protection, concretely relates to storehouse and transport vehicle blowing connecting device are stored to tailings.

Background

In the treatment process of the drilling oil-based detritus, tailings are generated after incineration, the tailings are cooled by a slag cooler and then conveyed into a tailings storage bin by a multi-bucket conveyor for temporary storage, and then the tailings are conveyed away by a vehicle; when the tailings in the tailings storage bin are placed into a carriage of a transfer vehicle, the tailings are in a dry state and have a certain temperature, so that a large amount of dust can be generated during the tailings loading, and the environmental pollution is caused.

In the existing loading process of tailings and similar articles, the adopted method comprises the following steps:

(1) the method comprises the following steps: building a three-side wall body under a tailings storage bin to seal a house, arranging dust blocking curtains at vehicle inlets and outlets, putting down the dust blocking curtains after a transfer vehicle enters the house to prevent dust generated during slag discharging from leaking, wherein the dust still overflows from the gaps of the dust blocking curtains because the gaps exist among the dust blocking curtains, and meanwhile, the dust can scatter on the body of the transfer vehicle because the transfer vehicle is in a space where the dust is generated, so that the dust pollutes the environment after the vehicle is driven out, and the method has the problems of large occupied area and high investment cost and fails to solve the aim of comprehensive dust prevention;

(2) the second method comprises the following steps: the spraying water mist device is arranged around the discharge port of the tailings storage bin, and when tailings are placed, the generated dust is sprayed and pressed by water mist, so that dust flying is prevented, and the generated water mist is influenced by the action of natural wind force when the dust is pressed by the spraying water mist, so that fine dust floats to the air in the water mist to pollute the environment; meanwhile, the pressed dust floats on the vehicle body after being wetted, so that the vehicle is polluted, and the method cannot fundamentally solve the effect of dust raising;

(3) the third method comprises the following steps: set up the dust cage on the storehouse is stored to the tailings, install the sack and receive devices such as dirt, draught fan, pipeline, when putting the transportation vehicle with the tailings, the dust of production, under the effort of draught fan, will be inhaled in the sack through the pipeline and collect, this method equipment is more, causes the problem that investment cost is high, area is big, the working costs is higher to the dust of collecting in the sack cleaner faces the problem of ash again.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a storehouse is stored to tailings and transport vehicle blowing connecting device, solves the problem that produces dust pollution environment when putting into the transportation vehicle with the tailings.

The utility model discloses a following technical scheme realizes:

a discharging and connecting device for a tailings storage bin and a transfer vehicle comprises the tailings storage bin, a carriage of the transfer vehicle and a telescopic connecting joint; a discharge hole is formed in the bottom of the tailing storage bin; the top end of the carriage is provided with a carriage cover, and a sealed carriage is formed; the top of the compartment cover is provided with a feeding hole; the telescopic connecting joint is connected between the discharge hole of the tailing storage bin and the feed inlet of the compartment cover in an assembling and disassembling mode.

Further limiting, the telescopic connection joint comprises an upper connection steel pipe and a lower connection steel pipe; the top end of the upper connecting steel pipe is fixedly connected with a discharge hole of the tailings storage bin, and specifically, the upper connecting steel pipe can be connected through a flange plate bolt, welded and fixed or integrally formed; the upper connecting steel pipe is provided with an electric valve, and the electric valve is used for controlling discharging; the bottom end of the upper connecting steel pipe and the top end of the lower connecting steel pipe are respectively provided with an upper flange plate and a lower flange plate, a plurality of handle type bolt connecting mechanisms are arranged between the upper flange plate and the lower flange plate, and the handle type bolt connecting mechanisms are uniformly distributed along the circumferential direction of the upper flange plate, so that the upper flange plate and the lower flange plate can be ensured to be locked; the bottom end of the lower connecting steel pipe extends into the feed inlet of the carriage cover and can move along the axial direction; when the telescopic connecting joint is installed, the lower flange plate is pressed against the upper flange plate by controlling the lower flange plate to ascend, and the handle type bolt connecting mechanism is controlled to lock and connect the upper flange plate and the lower flange plate.

Further limiting, a feed port of the compartment cover is formed by welding a steel pipe on the compartment cover, a lever bracket is arranged on the outer wall of the feed port, and the lower flange plate can be jacked up through the lever bracket; the lower connecting steel pipe can guide the lower flange plate to move along the axial direction, and the lower flange plate is prevented from deviating.

Further limiting, the lever bracket comprises a cross bar, a U-shaped roll-over stand and a connecting rod; the middle part of the cross rod is welded and fixed with the outer wall of the feeding hole, the cross rod is perpendicular to the axis of the feeding hole, the middle parts of the parallel edges at two sides of the U-shaped turnover frame are respectively and correspondingly rotatably connected with two ends of the cross rod, one end of the connecting rod is fixedly connected with the middle part of the U-shaped turnover frame, and the U-shaped turnover frame can turn around the cross rod by treading the other end of the connecting rod; the end parts of the parallel edges at the two sides of the U-shaped turnover frame are respectively provided with a vertical upward ejector rod, and the ejector rods are used for ejecting the lower flange plate; when the U-shaped turnover frame turns around the cross rod, the ejector rod rises and pushes the lower flange plate to rise upwards along the axial direction, so that the lower flange plate is abutted against the upper flange plate, and the U-shaped turnover frame is convenient to fasten and connect; after the handle type bolt connecting mechanism is opened, the lower flange plate and the lower connecting steel pipe automatically descend under the action of self-gravity to realize separation, a certain gap is formed, and the transfer vehicle can freely enter and exit.

Further limiting, a PTEF cloth bag barrel is arranged between the feed port and the lower flange plate and is used for preventing dust from leaking from a gap between the lower connecting steel pipe and the feed port; specifically, the bottom end of the PTEF cloth bag barrel is sleeved on the outer side wall of the feeding hole and is hooped tightly through a rope or a steel wire, and the top end of the PTEF cloth bag barrel is fixedly connected with the bottom end face of the lower flange plate; based on the softness and the folding performance of the PTEF cloth bag barrel, the PTEF cloth bag barrel can be always sealed to connect the gap between the steel pipe and the feeding hole.

Further limiting, the handle type bolt connecting mechanism comprises a U-shaped support, a rotating shaft, a screw rod, a handle and a U-shaped groove plate; the handle is arranged on the upper part of the screw rod in a threaded connection mode, and specifically, a threaded sleeve is arranged on the handle; the screw is sleeved with a gasket, and the U-shaped groove plate is fixedly arranged on the outer side wall of the upper flange plate; when the telescopic connecting joint is connected, the lower flange plate is jacked up through the lever support to enable the lower flange plate to abut against the upper flange plate, the handle is held by hands and the screw rod is turned over, the screw rod is clamped into the U-shaped trough plate, the bottom end of the gasket abuts against the top end face of the upper flange plate, the handle is rotated to enable the handle to be screwed downwards along the screw rod, and the bottom end of the handle abuts against the gasket until the upper flange plate and the lower flange plate are locked.

Further limit, be equipped with the asbestos rope between upper flange dish and the lower flange dish, the asbestos rope is used for filling the gap between upper flange dish and the lower flange dish, prevents that the dust from leaking from this gap.

Further inject, the back door of carriage is equipped with high temperature resistant joint strip all around in the installation, can improve the leakproofness of carriage back door, prevents that the dust from the back door of carriage from leaking.

Further limiting, the compartment cover is welded into a trapezoidal shape by steel plates, so that tailings can be conveniently diffused into the compartment.

Further limiting, a plurality of air dispersing cylinders are arranged on the compartment cover, each air dispersing cylinder is communicated with the inside of the compartment, a PTEF cloth bag sleeve is fixedly arranged at the top of each air dispersing cylinder, the air dispersing cylinders are used for discharging air in the compartment, and the PTEF cloth bag sleeves are used for filtering dust; specifically, one end of the PTEF cloth bag sleeve is opened, and the open end is communicated with the air dispersing cylinder.

According to the above technical scheme, the utility model provides a pair of storehouse and transfer vehicle blowing connecting device are stored to tailings, beneficial effect lies in: when putting into the carriage of haulage vehicle with the tailings in the tailings storage bin, realize through telescopic attach fitting that the tailings is stored the full sealing connection between the discharge gate in storehouse and the feed inlet of railway carriage or compartment lid, can guarantee that no dust and raise dust spill over in blowing operation process, fundamentally has solved the problem of dust pollution environment to simple structure, investment are very little, and the operation is reliable, and is economical and practical.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a front view of the present invention.

Fig. 2 is a schematic view of a local structure of the telescopic joint of the present invention.

Fig. 3 is a partial structural diagram of fig. 2 at I.

Fig. 4 is a partial sectional view taken in the direction of a-a in fig. 2.

In the drawings: 1-tailings storage bin, 2-carriage, 3-telescopic connector, 31-upper connecting steel pipe, 32-lower connecting steel pipe, 33-electric valve, 34-upper flange, 35-lower flange, 36-PTEF cloth bag barrel, 37-asbestos rope, 4-carriage cover, 5-feed inlet, 6-handle bolt connecting mechanism, 61-U-shaped support, 62-rotating shaft, 63-screw rod, 64-handle, 65-U-shaped trough plate, 66-gasket, 7-lever bracket, 71-cross rod, 72-U-shaped turnover frame, 73-connecting rod, 74-ejector rod, 8-air dispersing barrel and 9-PTEF cloth bag sleeve.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

In the description of the present application, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

As shown in fig. 1 to 4, the discharging and connecting device for the tailings storage bin and the transfer vehicle comprises thetailings storage bin 1, acarriage 2 of the transfer vehicle and a telescopic connectingjoint 3;

a discharge hole is formed in the bottom of thetailings storage bin 1; the top end of thecarriage 2 is provided with acarriage cover 4, and a sealedcarriage 2 is formed; thecompartment cover 4 is welded into a trapezoidal shape by steel plates, so that tailings can be conveniently diffused into thecompartment 2; the top of thecompartment cover 4 is provided with afeeding hole 5; thefeed port 5 of thecompartment cover 4 is formed by welding a steel pipe on thecompartment cover 4; the telescopic connectingjoint 3 is connected between the discharge hole of thetailings storage bin 1 and thefeed inlet 5 of thecompartment cover 4 in a detachable mode;

the telescopic connectingjoint 3 comprises an upper connectingsteel pipe 31 and a lower connectingsteel pipe 32; the top end of the upper connectingsteel pipe 31 is fixedly connected with the discharge hole of thetailings storage bin 1, and specifically, the upper connectingsteel pipe 31 and the discharge hole of thetailings storage bin 1 are integrally formed; anelectric valve 33 is arranged on the upper connectingsteel pipe 31, and theelectric valve 33 is used for controlling discharging; the bottom end of the upper connectingsteel pipe 31 and the top end of the lower connectingsteel pipe 32 are respectively provided with anupper flange 34 and alower flange 35, a plurality of handle typebolt connecting mechanisms 6 are arranged between theupper flange 34 and thelower flange 35, and the handle typebolt connecting mechanisms 6 are uniformly distributed along the circumferential direction of theupper flange 34, so that theupper flange 34 and thelower flange 35 can be ensured to be locked; the bottom end of the lower connectingsteel pipe 32 extends into thefeed port 5 of thecompartment cover 4 and can move along the axial direction; when the telescopic connectingjoint 3 is installed, thelower flange 35 is pressed against theupper flange 34 by controlling thelower flange 35 to rise, and the handle typebolt connecting mechanism 6 is controlled to lock and connect theupper flange 34 and thelower flange 35;

the outer wall of thefeeding hole 5 of thecarriage 2 is provided with alever bracket 7, and thelower flange plate 35 can be jacked up through thelever bracket 7; the lower connectingsteel pipe 32 can guide thelower flange 35 to move along the axial direction, so that thelower flange 35 is prevented from deviating;

thelever bracket 7 comprises across bar 71, a U-shaped roll-overstand 72 and a connectingrod 73; the middle part of thecross rod 71 is welded and fixed with the outer wall of thefeeding hole 5, thecross rod 71 is perpendicular to the axis of thefeeding hole 5, the middle parts of the parallel edges on the two sides of the U-shapedturning frame 72 are respectively and correspondingly rotatably connected with the two ends of thecross rod 71, one end of the connectingrod 73 is fixedly connected with the middle part of the U-shapedturning frame 72, and the U-shapedturning frame 72 can turn around thecross rod 71 by stepping on the other end of the connectingrod 73; the end parts of the parallel edges at two sides of the U-shapedturnover frame 72 are respectively provided with a verticalupward mandril 74, and themandril 74 is used for jacking thelower flange plate 35; when the U-shaped roll-overstand 72 turns over around thecross rod 71, theejector rod 74 rises and pushes thelower flange plate 35 to rise upwards along the axial direction, so that thelower flange plate 35 is abutted against theupper flange plate 34, and the U-shaped roll-over stand is convenient to fasten and connect; after the handle typebolt connecting mechanism 6 is opened, thelower flange 35 and the lower connectingsteel pipe 32 automatically descend under the action of self gravity to realize separation, a certain gap is formed, and the free entering and exiting of a transfer vehicle are ensured;

the handle typebolt connecting mechanism 6 comprises aU-shaped support 61, arotating shaft 62, ascrew 63, ahandle 64 and aU-shaped groove plate 65; theU-shaped support 61 is fixedly mounted on the outer side wall of thelower flange 35, two ends of the rotatingshaft 62 are rotatably connected with theU-shaped support 61, the bottom end of thescrew 63 is fixedly connected with the middle part of the rotatingshaft 62, specifically, the screw can be welded and fixed, thehandle 64 is mounted on the upper part of thescrew 63 in a threaded connection mode, and specifically, a threaded sleeve is arranged on thehandle 64; agasket 66 is sleeved on thescrew 63, and theU-shaped groove plate 65 is fixedly arranged on the outer side wall of theupper flange plate 34; when the telescopic connectingjoint 3 is connected, thelower flange 35 is jacked up through thelever bracket 7, thelower flange 35 is abutted against theupper flange 34, thehandle 64 is held by hand and thescrew 63 is turned over, thescrew 63 is clamped into theU-shaped groove plate 65, the bottom end of thegasket 66 is abutted against the top end face of theupper flange 34, thehandle 64 is rotated, thehandle 64 is screwed downwards along thescrew 63, and the bottom end of thehandle 64 is abutted against thegasket 66 until theupper flange 34 and thelower flange 35 are locked.

In this embodiment, a PTEFcloth bag tube 36 is disposed between thefeed port 5 and thelower flange 35, and the PTEFcloth bag tube 36 is used to prevent dust from leaking from a gap between the lower connectingsteel pipe 32 and thefeed port 5; specifically, the bottom end of thePTEF bag barrel 36 is sleeved on the outer side wall of thefeed port 5 and is hooped tightly by a rope or a steel wire, and the top end of thePTEF bag barrel 36 is fixedly connected with the bottom end face of thelower flange 35; based on the flexibility and the folding property of the PTEFcloth bag tube 36, the PTEFcloth bag tube 36 can be always sealed to connect the gap between thesteel tube 32 and thefeed port 5.

In this embodiment, anasbestos cord 37 is disposed between theupper flange 34 and thelower flange 35, and theasbestos cord 37 is used to fill a gap between theupper flange 34 and thelower flange 35, so as to prevent dust from leaking from the gap.

In this embodiment, the back door ofcarriage 2 is equipped with high temperature resistant joint strip (not seen in the figure) all around the installation, can improve the leakproofness ofcarriage 2 back door, prevents that the dust from the back door ofcarriage 2 from leaking.

In the embodiment, thecompartment cover 4 is provided with a plurality ofair dispersing cylinders 8, eachair dispersing cylinder 8 is communicated with the inside of thecompartment 2, the top of eachair dispersing cylinder 8 is fixedly provided with a PTEFcloth bag sleeve 9, eachair dispersing cylinder 8 is used for discharging air in thecompartment 2, and each PTEFcloth bag sleeve 9 is used for filtering dust; specifically, one end of the PTEFcloth bag sleeve 9 is open, and the open end is communicated with theair dispersing cylinder 8.

The working principle of the embodiment is as follows: when the transfer vehicle is driven to the lower part of thetailings storage bin 1, alower flange 35 arranged on thecarriage 2 is aligned with anupper flange 34 arranged below a tailings discharge port; an operator steps on one end of the connectingrod 73 by using thelever bracket 7 to turn the U-shapedturning frame 72 around thecross rod 71, and amandril 74 arranged on the U-shapedturning frame 72 rises to push thelower flange 35 to rise axially, so that thelower flange 35 is abutted against theupper flange 34; thehandle 64 is held by hand, thescrew 63 is turned over, thescrew 63 is clamped into the U-shapedgroove plate 65, the bottom end of thegasket 66 is abutted against the top end face of theupper flange plate 34, thehandle 64 is rotated, thehandle 64 is screwed downwards along thescrew 63, and the bottom end of thehandle 64 is abutted against thegasket 66 until theupper flange plate 34 and thelower flange plate 35 are locked; the gap between theupper flange plate 34 and thelower flange plate 35 is filled with a temperature-resistant andflexible asbestos rope 37, so that full sealing is achieved, and dust is prevented from leaking from the gap; after the connection is finished, theelectric valve 33 is opened, so that the tailings in thetailings storage bin 1 are placed into thecarriage 2, and the PTEFcloth bag barrel 36 can prevent dust from leaking from a gap between the lower connectingsteel pipe 32 and thefeed inlet 5; when the tailings in thecarriage 2 are full, theelectric valve 33 is closed, the handle typebolt connecting mechanism 6 is opened, thelower flange plate 35 is separated from theupper flange plate 34 under the action of self gravity, thelower flange plate 35 and the lower connectingsteel pipe 32 move downwards, a certain gap is formed between thelower flange plate 35 and theupper flange plate 34, the transfer vehicle can freely pass in and out, and therefore the purpose that no dust is raised to pollute the environment when the tailings are placed into thecarriage 2 from thetailings storage bin 1 is achieved. When the tailings in thetailings storage bin 1 are placed into acarriage 2 of a transfer vehicle, the telescopic connectingjoint 3 is used for realizing the full-sealing connection between a discharge port of thetailings storage bin 1 and afeed port 5 of acarriage cover 4, so that no dust and raised dust overflow in the emptying operation process can be ensured, the problem of dust pollution to the environment is fundamentally solved, and the device is simple in structure, small in investment, reliable in operation, economical and practical.

Claims (10)

1. The utility model provides a storehouse is stored to tailings and transportation vehicle blowing connecting device, stores carriage (2) and telescopic attach fitting (3) of storehouse (1), transportation vehicle including the tailings, its characterized in that: a discharge hole is formed in the bottom of the tailings storage bin (1); the top end of the carriage (2) is provided with a carriage cover (4) and forms a sealed carriage (2); a feed inlet (5) is formed in the top of the compartment cover (4); the telescopic connecting joint (3) is connected between a discharge hole of the tailings storage bin (1) and a feed inlet (5) of the compartment cover (4) in an assembling and disassembling mode.

2. The discharging and connecting device for the tailings storage bin and the transfer vehicle as claimed in claim 1, wherein: the telescopic connecting joint (3) comprises an upper connecting steel pipe (31) and a lower connecting steel pipe (32); the top end of the upper connecting steel pipe (31) is fixedly connected with a discharge hole of the tailings storage bin (1); an electric valve (33) is arranged on the upper connecting steel pipe (31); an upper flange plate (34) and a lower flange plate (35) are respectively arranged at the bottom end of the upper connecting steel pipe (31) and the top end of the lower connecting steel pipe (32), a plurality of handle type bolt connecting mechanisms (6) are arranged between the upper flange plate (34) and the lower flange plate (35), and the handle type bolt connecting mechanisms (6) are uniformly distributed along the circumferential direction of the upper flange plate (34); the bottom end of the lower connecting steel pipe (32) extends into the feed inlet (5) of the compartment cover (4).

3. The discharging and connecting device for the tailings storage bin and the transfer vehicle as claimed in claim 2, wherein: the feeding hole (5) of the box cover (4) is formed by welding steel pipes on the box cover (4), and a lever support (7) is arranged on the outer wall of the feeding hole (5).

4. The discharging and connecting device for the tailings storage bin and the transfer vehicle as claimed in claim 3, wherein: the lever bracket (7) comprises a cross bar (71), a U-shaped roll-over stand (72) and a connecting rod (73); the middle part of the cross rod (71) is welded and fixed with the outer wall of the feed port (5), and the cross rod (71) is vertical to the axis of the feed port (5); the middle parts of the parallel edges at two sides of the U-shaped roll-over stand (72) are respectively and correspondingly connected with two ends of the cross rod (71) in a rotating way; one end of the connecting rod (73) is fixedly connected with the middle part of the U-shaped turnover frame (72); the end parts of the parallel edges at two sides of the U-shaped turnover frame (72) are respectively provided with a vertical upward ejector rod (74), and the ejector rods (74) are used for ejecting the lower flange plate (35).

5. The discharge connecting device for the tailings storage bin and the transfer vehicle as claimed in any one of claims 2 to 4, wherein: be equipped with a PTEF cloth bag section of thick bamboo (36) between feed inlet (5) and lower flange dish (35), a PTEF cloth bag section of thick bamboo (36) are used for preventing the dust from connecting the clearance between steel pipe (32) and feed inlet (5) from leaking down.

6. The discharge connecting device for the tailings storage bin and the transfer vehicle as claimed in any one of claims 2 to 4, wherein: the handle type bolt connecting mechanism (6) comprises a U-shaped support (61), a rotating shaft (62), a screw (63), a handle (64) and a U-shaped groove plate (65); u type support (61) fixed mounting is in the lateral wall of lower flange dish (35), and the both ends of axis of rotation (62) rotate with U type support (61) and are connected, and the bottom of screw rod (63) and the middle part fixed connection of axis of rotation (62), handle (64) are installed in the upper portion of screw rod (63) through threaded connection's mode, and the cover is equipped with gasket (66) on screw rod (63), and U type frid (65) fixed mounting is in the lateral wall of last ring flange (34).

7. The discharging and connecting device for the tailings storage bin and the transfer vehicle as claimed in claim 2, wherein: an asbestos rope (37) is arranged between the upper flange plate (34) and the lower flange plate (35), and the asbestos rope (37) is used for filling a gap between the upper flange plate (34) and the lower flange plate (35).

8. The discharging and connecting device for the tailings storage bin and the transfer vehicle as claimed in claim 1, wherein: and high-temperature-resistant sealing rubber strips are arranged around the rear door of the carriage (2).

9. The discharging and connecting device for the tailings storage bin and the transfer vehicle as claimed in claim 1, wherein: the compartment cover (4) is welded into a trapezoidal shape by steel plates.

10. The discharging and connecting device for the tailings storage bin and the transfer vehicle as claimed in claim 1, wherein: be equipped with a plurality of scattered inflator (8) on railway carriage or compartment lid (4), communicate in every scattered inflator (8) all with railway carriage or compartment (2), and the top of every scattered inflator (8) all fixed PTEF sack cover (9) that is equipped with, scattered inflator (8) are used for discharging the air in railway carriage or compartment (2), and PTEF sack cover (9) are used for filtering the dust.

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