CN213492573U

CN213492573U - Closed-circuit type dust cleaning and removing device

Info

Publication number: CN213492573U
Application number: CN202022111001.7U
Authority: CN
Inventors: 谭鼎昌; 谭维
Original assignee: SICHUAN TIANHUAN TECHNOLOGY EN
Current assignee: SICHUAN TIANHUAN TECHNOLOGY EN
Priority date: 2020-09-23
Filing date: 2020-09-23
Publication date: 2021-06-22
Anticipated expiration: 2030-09-23

Abstract

The utility model discloses a closed circuit formula deashing dust remover relates to the purification field, including dust removal gas air intake, purification gas air outlet, clean room, ash bucket and deashing system, be provided with a plurality of dust removal units in the clean room, the last a plurality of jetting pipes that are provided with of deashing system, each jetting pipe corresponds a dust removal unit, forms the clearance between each jetting pipe and its the dust removal unit that corresponds, the dust remover still includes dust remover non return system, this dust remover non return system including be used for with the clearance seal's non return ware unit. The utility model discloses can effectively clear away the foul of filtration pore wall.

Description

Closed-circuit type dust cleaning and removing device

Technical Field

The utility model relates to a closed circuit formula deashing dust remover.

Background

At present, a bag type dust collector (filter bag is a bag) containing a plurality of filter bag dust collection units is mostly adopted for industrially treating dust-containing gas, the dust collection adopts a pulse mode, during dust collection, a pulse valve is opened, compressed air in a gas bag is sprayed out through a small hole on a spray pipe through the pulse valve and then is blown into a filter bag (each filter bag corresponds to one spray pipe) through a venturi connected with the end of the spray pipe, and therefore the dust collection of the filter bag is realized, and the filter bag keeps the filtering performance.

Because the filter bag of the bag-type dust collector is a cloth bag, the working temperature of the bag-type dust collector is lower than 240 ℃, the bag-type dust collector is not suitable for treating industrial dusty gas with the temperature higher than 240 ℃, particularly dusty gas with the temperature of 600 ℃ - & gt 700 ℃, therefore, when people treat the dusty gas with the high temperature, the material of the cloth bag is replaced by a material (such as metal such as stainless steel) which can resist the high temperature, so as to adapt to the working environment with the high temperature, however, the dust collector adopting the stainless steel or the metal material which can resist the high temperature can obtain better dust removing effect, but the dust removing effect is poor, particularly for the dusty gas with the slightly sticky high temperature, the dust removing effect is basically not achieved during dust removing, and the filter holes on the filter bag are blocked, so that the.

SUMMERY OF THE UTILITY MODEL

In view of the above, the utility model provides a closed circuit formula deashing dust remover, this closed circuit formula deashing dust remover will amass the dust of attaching on the filter bag filtration pore wall and drop and leave the filter bag, realize effective deashing.

The technical scheme is as follows: the utility model provides a closed circuit formula deashing dust remover, includes dust removal gas air intake, purified gas air outlet, clean room, ash bucket and deashing system, is provided with a plurality of dust removal units in the clean room, is provided with a plurality of jetting pipes in the deashing system, and each jetting pipe corresponds a dust removal unit, forms the clearance between each jetting pipe and the dust removal unit that corresponds thereof, the dust remover still includes dust remover non return system, this dust remover non return system including be used for with the clearance seal's non return ware unit.

Optionally, the check unit comprises a check body having a first through hole opened therein.

Optionally, the check body is substantially inverted segment or inverted crown shaped.

Optionally, a sleeve is disposed on the first through hole.

Optionally, the sleeve is composed of a large pipe, a reducer pipe and a small pipe, and the reducer pipe is connected with the large pipe and the small pipe respectively.

Optionally, the backstop unit further comprises a mounting plate, the mounting plate is located between the sleeve and the backstop body, the sleeve is mounted on the mounting plate, and a via hole is formed in the mounting plate.

Optionally, the dust remover check system further comprises a plurality of transmission branch units, a transmission total rod and a plurality of reciprocating power connecting rods, each check unit is connected with at least one transmission branch unit, each transmission branch unit is connected to the transmission total rod, at least one reciprocating power connecting rod is arranged, and each reciprocating power connecting rod is connected with the transmission total rod.

Optionally, the dust remover check system further comprises a plurality of adjusting units, each check unit corresponds to one adjusting unit, each adjusting unit comprises an upper adjusting plate and a lower adjusting plate, each lower adjusting plate is connected with the transmission support rod unit connected to the check unit corresponding to the lower adjusting plate, the upper adjusting plate is located above the transmission main rod, and the lower adjusting plate is located below the transmission main rod.

Optionally, the drive rod assembly is a square tube.

Optionally, the dust collector non-return system further comprises a guide component, a guide groove is formed in one surface, opposite to the transmission main rod, of the guide component, and a guide convex block is connected to one surface, opposite to the guide groove, of the transmission main rod.

The utility model discloses inventive principle:

the utility model discloses the inventor finds in production practice through research that the filter bag deashing principle of cloth material is: after the air current got into the filter bag, the pressure difference between the pressure in the filter bag and the pressure outside the filter bag produced the change (when the air current just got into, the pressure in the filter bag was greater than the pressure outside the filter bag, then along with gaseous outflow, the pressure in the filter bag equaled the pressure outside the filter bag), because the filter bag is the cloth, thereby cause the earlier shrink of expansion of filter bag, thereby produce the vibration, in addition get into the air current with dust removal air current opposite direction, there is certain reverse purging effect, thereby make the dust of long-pending attainment on the filter bag filtration pore wall drop and leave the filter bag, consequently, effective deashing can be carried out.

However, when the material of the filter bag is a material capable of resisting high temperature (such as metal like stainless steel), because the material does not expand and contract with the difference between the pressure inside the filter bag and the pressure outside the filter bag, therefore, the dust accumulated on the filter hole walls of the filter bag can not be fallen off and separated from the filter bag through vibration, and because the diameter of the filter bag is far larger than that of the injection tube (generally, when the diameter of the filter bag is 160mm, the diameter of the injection tube is about 42 mm), therefore, the sectional area of the filter bag is far larger than that of the injection tube, and therefore, after the airflow from the injection tube enters the filter bag and contacts with the inner wall of the filter bag, because the gap between the injection tube and the mouth of the filter bag is far larger than the area of the filter hole of the filter bag, therefore, most of the air flow returns from the gap between the injection pipe and the mouth of the filter bag quickly, and high-pressure turbulent flow cannot be formed in the filter bag to blow the hole wall of the filter hole outwards, so that the dust removing effect is basically not achieved during dust removing.

Compared with the prior art, the utility model discloses principle beneficial effect lies in:

the utility model discloses a space seal between with jetting pipe and the filter bag to make when the deashing, after the air current that comes from jetting pipe gets into the filter bag with the inner wall contact of filter bag, because of there is not the space between jetting pipe and the filter bag mouth, the air current can only be followed the filtration pore and blown off, consequently the air current forms indiscriminate stream and forms the high pressure in the filter bag, the air current blows off from the filtration pore under highly compressed effect, thereby will amasss the dust of attaching on the filtration pore wall of filter bag and drop and leave the filter bag, realize effective deashing.

Drawings

FIG. 1 is a schematic structural diagram of embodiment 1 of the present invention;

FIG. 2 is a schematic cross-sectional illustration of FIG. 1;

FIG. 3 is a schematic structural view of a non-return system of a dust collector according to embodiment 1 of the present invention;

fig. 4 is a dust remover based on fig. 3;

FIG. 5 is a schematic view in section of the interior of the tank of FIG. 4;

fig. 6 is a schematic structural diagram of embodiment 2 of the present invention;

FIG. 7 is a cross-sectional illustration of FIG. 6;

FIG. 8 is a schematic structural view of a non-return system of a dust collector according to embodiment 2 of the present invention;

fig. 9 is a dust remover based on fig. 8;

FIG. 10 is a schematic view in section of the interior of the tank of FIG. 9;

fig. 11 is a schematic structural view of embodiment 3 of the present invention;

FIG. 12 is a cross-sectional illustration of FIG. 11;

fig. 13 is a schematic structural view of a non-return system of a dust collector according to embodiment 3 of the present invention;

fig. 14 is a dust remover based on fig. 13;

FIG. 15 is a schematic view in section of the interior of the tank of FIG. 14;

fig. 16 is a schematic structural view of embodiment 4 of the present invention;

FIG. 17 is a cross-sectional diagrammatic view of FIG. 16;

fig. 18 is a schematic structural view of a non-return system of a dust collector according to embodiment 4 of the present invention;

fig. 19 is a dust remover based on fig. 18;

FIG. 20 is a schematic view in section of the interior of the tank of FIG. 19;

fig. 21 is a schematic structural view of embodiment 5 of the present invention;

FIG. 22 is a cross-sectional diagrammatic view of FIG. 21;

fig. 23 is a schematic structural view of a non-return system of a dust collector according to embodiment 5 of the present invention;

fig. 24 is a dust remover based on fig. 23;

FIG. 25 is a schematic view in section of the interior of the case of FIG. 24;

fig. 26 is a schematic structural view of embodiment 6 of the present invention;

FIG. 27 is a cross-sectional diagrammatic view of FIG. 26;

fig. 28 is a schematic structural view of a check system of a dust collector according to example 6;

fig. 29 is a dust remover based on fig. 28;

FIG. 30 is a schematic view in section of the interior of the case of FIG. 29;

fig. 31 is a schematic structural view of embodiment 7 of the present invention;

FIG. 32 is a cross-sectional diagrammatic view of FIG. 31;

fig. 33 is a schematic structural view of a check system of a dust collector according to example 7 of the present invention;

fig. 34 is a dust remover based on fig. 33;

FIG. 35 is a schematic view in section of FIG. 34 inside the tank;

fig. 36 is a schematic structural view of embodiment 8 of the present invention;

FIG. 37 is a cross-sectional diagrammatic view of FIG. 36;

fig. 38 is a schematic structural view of a check system of a dust collector according to embodiment 8 of the present invention;

fig. 39 is a dust remover based on fig. 38;

FIG. 40 is a schematic view in section of the interior of the tank of FIG. 39.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "side", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship that the product of the present invention is usually placed when in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be further noted that, unless otherwise explicitly specified or limited, the terms "disposed," "opened," "mounted," "connected," and "connected" are to be construed broadly, e.g., as either a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

Referring to fig. 1-2, fig. 1 is a schematic view of a non-return unit for ash removal of a dust collector in the present embodiment, fig. 2 is a schematic view of a cross-sectional view of fig. 1,

a non-return unit 1 for dust removal of a dust remover comprises a non-return body 11, wherein the non-return body 11 is basically in the shape of an inverted segment of a sphere, a first through hole 12 is formed in the non-return body 11, an injection pipe penetrates through the first through hole 12, and the size of the first through hole is matched with that of the injection pipe.

Based on embodiment 1's non return ware unit 1 is used in the dust remover deashing, the utility model also provides a dust remover non return system.

Referring to fig. 3, fig. 3 is a schematic view of a check system of a dust collector according to embodiment 1.

A dust remover check system 2 comprises a check device unit 1, a transmission support rod unit 21, a transmission main rod 22 and a reciprocating power connecting rod 23, wherein the check device unit 1 and the transmission support rod unit 21 are respectively provided with a plurality of units, each check device unit 1 is at least connected with one transmission support rod unit 21, each transmission support rod unit 21 is connected onto the transmission main rod 22, at least one reciprocating power connecting rod 23 is arranged, and each reciprocating power connecting rod 23 is respectively connected with the transmission main rod 22. During dust removal, the reciprocating power connecting rod 23 is pushed by power transmitted by the reciprocating power device to move, and meanwhile, the transmission main rod 22, the transmission support rod units 21 and the backstop unit 1 are driven to move, so that gaps between the injection pipe and the filter bag opening are sealed, dust removal airflow is prevented from flowing out of the gaps, and dust removal is achieved. During dust removal, the reciprocating power connecting rod 23 is pulled by power transmitted by the reciprocating power device to move, and meanwhile, the transmission main rod 22, the transmission support rod units 21 and the backstop unit 1 are driven to move, gaps between the injection pipe and the filter bag opening are unsealed, dust removal gas flows out from the gaps, and dust removal is achieved.

Further, the dust catcher check system 2 further includes a plurality of adjusting units 24, each check unit 1 corresponds to one adjusting unit 24, each adjusting unit 24 includes an upper adjusting plate 241 and a lower adjusting plate 241, each lower adjusting plate 241 is connected to the transmission rod unit 21 connected to the check unit 1 corresponding to the lower adjusting plate 241, the upper adjusting plate 241 is located above the transmission main rod 22, the lower adjusting plate 241 is located below the transmission main rod 22, the upper adjusting plate 241 and the lower adjusting plate 241 of each adjusting unit 24 are connected by a detachable connecting member, which may be a screw bolt, and is not particularly limited herein. Through the arrangement of the adjusting unit 24, the position of any backstop unit 1 and the transmission support rod unit 21 connected to the backstop unit 1 on the transmission general rod 22 can be adjusted, and the phenomenon that the backstop unit 1 deviates to cause poor sealing is avoided.

Further, the drive rod assembly 22 is a square tube for easy and secure installation.

Further, the dust collector check system 2 further comprises a guide part 25, a guide groove 251 is arranged on one surface of the guide part 25, which is opposite to the transmission main rod 22, and a guide convex block 252 is connected to one surface of the transmission main rod 22, which is opposite to the guide groove 251. The guide member 25 prevents the backstop unit 1 from being displaced by the drive rod assembly 22 and thereby causing a poor seal.

A dust remover non return system based on fig. 3, the utility model discloses still provide a dust remover.

Referring to fig. 4-5, fig. 4 is a schematic view of a duster shown in outline, and fig. 5 is a schematic view of a section inside the duster box of fig. 4.

A dust remover comprises a dust removal gas inlet 3, a purified gas outlet 4, a dust removal chamber 5, an ash bucket 6 and an ash removal system 7, wherein a plurality of dust removal units 8 are arranged in the dust removal chamber 5, a plurality of injection pipes 71 are arranged on the ash removal system 7, each injection pipe 71 corresponds to one dust removal unit 8, a gap 9 is formed between each injection pipe 71 and the corresponding dust removal unit 8, the dust remover further comprises the dust remover non-return system 2, the maximum sectional area of each non-return unit 1 is larger than the sectional area of each dust removal unit 8, during ash removal, the gap 9 is sealed by the lower part of each non-return unit 1, and each injection pipe 71 is positioned in a first through hole 12 of each non-return unit 1.

During the ash cleaning operation, the reciprocating motor 26 drives the reciprocating power connecting rod 23 to move, and simultaneously drives the transmission main rod 22, the transmission support rod units 21 and the backstop unit 1 to move, so that the gap 9 is sealed, the ash cleaning airflow is prevented from flowing out of the gap, and the ash cleaning is realized. During dust removal, the reciprocating power connecting rod 23 is pulled by the reciprocating motor 26 to move, and meanwhile, the transmission main rod 22, the transmission support rod units 21 and the backstop unit 1 are driven to move and move out of the gap 9, dust removal gas flows out of the gap, and dust removal is achieved.

In the present invention, the cylinder or any other power device capable of providing power to seal and unseal the clearance 9 of the check unit 1 may be used, and no special limitation is made here.

Further, in order to make the non-return system 2 of the dust remover consistent, when the reciprocating power connecting rods 23 are more than two, a balance transmission rod 27 is also arranged, each double power connecting rod 23 is connected on the balance transmission rod 27, and a power mechanism such as a double motor 26 and the like providing reciprocating power transmits power through the balance transmission rod 27.

Example 2

Referring to fig. 6-7, fig. 6 is a schematic view of a non-return unit for ash removal of a dust collector in the present embodiment, fig. 7 is a schematic view of a cross-sectional view of fig. 6,

a non-return unit 1 for dust removal of a dust remover comprises a non-return body 11, wherein the non-return body 11 is basically in an inverted spherical crown shape, a first through hole 12 is formed in the non-return body 11, and the first through hole 12 is used for an injection pipe to pass through and is matched with the injection pipe in size.

Based on embodiment 2's non return ware unit 1 is used in the dust remover deashing, the utility model also provides a dust remover non return system.

Referring to fig. 8, fig. 8 is a schematic structural view of a check system of a dust collector according to embodiment 2.

A dust remover non return system based on fig. 8, the utility model discloses still provide a dust remover.

Referring to fig. 9-10, fig. 9 is a schematic view of an external form of the precipitator, and fig. 10 is a schematic view of a cross section of the inside of the precipitator tank of fig. 9.

Example 3

Referring to fig. 11-12, fig. 11 is a schematic view of a non-return unit for ash removal of a dust collector in the present embodiment, fig. 12 is a schematic view of a cross-sectional view of fig. 11,

a non-return unit 1 for dust removal of a dust remover comprises a non-return body 11, wherein the non-return body 11 is basically in the shape of an inverted segment of a sphere, and a first through hole 12 is formed in the non-return body 11.

Further, a sleeve 13 is arranged on the first through hole 12, the first through hole 12 and the sleeve 13 are used for a blowing pipe to pass through, and the sleeve 13 and the first through hole 12 are matched with the blowing pipe in size.

Based on the dust remover for the deashing non return ware unit 1 of embodiment 3, the utility model also provides a dust remover non return system.

Referring to fig. 13, fig. 13 is a schematic view of a check system of a dust collector according to embodiment 3.

A dust remover non return system based on fig. 13, the utility model discloses still provide a dust remover.

Referring to fig. 14-15, fig. 14 is a schematic view of an external form of the duster, and fig. 15 is a schematic view of a cross-section of the inside of the case of the duster of fig. 14.

A dust remover comprises a dust removal gas inlet 3, a purified gas outlet 4, a dust removal chamber 5, an ash bucket 6 and an ash removal system 7, wherein a plurality of dust removal units 8 are arranged in the dust removal chamber 5, a plurality of injection pipes 71 are arranged on the ash removal system 7, each injection pipe 71 corresponds to one dust removal unit 8, a gap 9 is formed between each injection pipe 71 and the corresponding dust removal unit 8, the dust remover further comprises the dust remover check system 2, the maximum sectional area of each check unit 1 is larger than the sectional area of each dust removal unit 8, during ash removal, the gap 9 is sealed by the lower part of each check unit 1, each injection pipe 71 is respectively positioned in a sleeve 13 and a first through hole 12 of each check unit 1, the sleeve 13 is matched with the injection pipes 71, and the gap 9 is favorably sealed.

Example 4

Referring to fig. 16-17, fig. 16 is a schematic view of a non-return unit for ash removal of a dust remover according to the present embodiment, fig. 17 is a schematic view of a cross-sectional view of fig. 16,

a non-return unit 1 for dust removal of a dust remover comprises a non-return body 11, wherein the non-return body 11 is basically in an inverted spherical crown shape, and a first through hole 12 is formed in the non-return body 11.

Based on the dust remover for the deashing backstop unit 1 of embodiment 4, the utility model also provides a dust remover non return system.

Referring to fig. 18, fig. 18 is a schematic structural view of a check system of a dust remover according to embodiment 4.

A dust remover non return system based on fig. 18, the utility model discloses still provide a dust remover.

Referring to fig. 19-20, fig. 19 is a schematic view of an external form of the precipitator, and fig. 20 is a schematic view of a cross section of the inside of the precipitator tank of fig. 19.

Example 5

Referring to fig. 21-22, fig. 21 is a schematic view of a dust catcher ash removal check device of the present embodiment, and fig. 22 is a schematic view of a cross-sectional view of fig. 21.

Further, in order to facilitate the insertion of the injection tube into the protruding sleeve 13 and to better seal the sleeve 13 with the injection tube, the diameter of the end of the sleeve 13 remote from the non-return body 11 is smaller than the diameter of the end adjacent to the non-return body 11, and the size of the end of the sleeve 13 remote from the non-return body 11 matches the size of the injection tube.

More specifically, the sleeve 13 is composed of a large pipe 131, a reducing pipe 132 and a small pipe 133, the reducing pipe 132 is connected with the large pipe 131 and the small pipe 133 respectively, and the small pipe 133 is matched with the blowing pipe in size.

Based on non return ware unit 1 for the dust remover deashing of embodiment 5, the utility model also provides a dust remover non return system.

Referring to fig. 23, fig. 23 is a schematic view of a check system of a dust collector in accordance with embodiment 5.

A dust remover non return system based on fig. 23, the utility model also provides a dust remover.

Referring to fig. 24-25, fig. 24 is a schematic view of an external form of the duster, and fig. 25 is a schematic view of a cross-section of the inside of the case of the duster of fig. 24.

Example 6

Referring to fig. 26-27, fig. 26 is a schematic view of a ash removal check device for a dust remover according to the present embodiment, fig. 27 is a schematic view of a cross-sectional view of fig. 26,

Based on the dust remover for the deashing non return ware unit 1 of embodiment 6, the utility model also provides a dust remover non return system.

Referring to fig. 28, fig. 28 is a schematic structural view of a check system of a dust remover according to embodiment 6.

A dust remover non return system based on fig. 28, the utility model discloses still provide a dust remover.

Referring to fig. 29-30, fig. 29 is a schematic view of an external form of the precipitator and fig. 30 is a schematic view of a cross section of the inside of the precipitator tank of fig. 29.

Example 7

Referring to fig. 31-32, fig. 31 is a schematic view of a ash-cleaning check device of a dust remover according to the present embodiment, fig. 32 is a schematic view of a cross-sectional view of fig. 31,

Further, the backstop unit 1 further comprises a mounting plate 14, the mounting plate 14 is located between the sleeve 13 and the backstop body 11, the sleeve 13 is mounted on the mounting plate 14, and a through hole 15 for allowing the blowing pipe to pass through is formed in the mounting plate 14. The mounting plate 14 is provided to facilitate mounting.

Based on non return ware unit 1 for the dust remover deashing of embodiment 7, the utility model also provides a dust remover non return system.

Referring to fig. 33, fig. 33 is a schematic view of a check system of a dust remover according to embodiment 7.

A dust remover non return system based on fig. 33, the utility model discloses still provide a dust remover.

Referring to fig. 34-35, fig. 34 is a schematic view of an external form of the duster, and fig. 35 is a schematic view of a cross-section of the inside of the case of the duster of fig. 34.

Example 8

Referring to fig. 36-37, fig. 36 is a schematic view of a ash removal check device for a dust remover according to the present embodiment, fig. 37 is a schematic view of a cross-sectional view of fig. 36,

Further, the backstop unit 1 further comprises a mounting plate 14, the mounting plate 14 is located between the sleeve 13 and the backstop body 11, the sleeve 13 is mounted on the mounting plate 14, and a through hole 15 for allowing the blowing pipe to pass through is formed in the mounting plate 14.

Based on the dust remover for the deashing non return ware unit 1 of embodiment 8, the utility model also provides a dust remover non return system.

Referring to fig. 38, fig. 38 is a schematic view of a check system of a dust catcher in accordance with embodiment 8.

A dust remover non return system based on fig. 38, the utility model also provides a dust remover.

Referring to fig. 39-40, fig. 39 is a schematic view of an external form of the precipitator, and fig. 40 is a schematic view of a cross section of the inside of the precipitator casing of fig. 39.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a closed circuit formula deashing dust remover, includes dust removal gas air intake, purification gas air outlet, clean room, ash bucket and deashing system, is provided with a plurality of dust removal units in the clean room, is provided with a plurality of jetting pipes in the deashing system, and each jetting pipe corresponds a dust removal unit, forms clearance, its characterized in that between each jetting pipe and its the dust removal unit that corresponds: the precipitator further comprises a precipitator non-return system comprising a non-return unit for sealing the gap.

2. The closed-circuit ash removal dust remover according to claim 1, wherein: the check unit includes a check body having a first through hole formed therein.

3. The closed-circuit ash removal dust remover according to claim 2, wherein: the check body is basically shaped like an inverted spherical segment or an inverted spherical crown.

4. The closed-circuit ash removal dust remover according to claim 2, wherein: the first through hole is provided with a sleeve.

5. The closed circuit ash removal precipitator of claim 4, wherein: the sleeve consists of a large pipe, a reducer pipe and a small pipe, wherein the reducer pipe is respectively connected with the large pipe and the small pipe.

6. The closed circuit ash removal precipitator of claim 4, wherein: the non-return device unit further comprises a mounting plate, the mounting plate is located between the sleeve and the non-return body, the sleeve is mounted on the mounting plate, and a through hole is formed in the mounting plate.

7. The closed-circuit ash-cleaning dust remover as claimed in any one of claims 1 to 6, wherein: the dust remover check system further comprises a transmission supporting rod unit, a transmission main rod and a reciprocating power connecting rod, wherein the number of the check device units and the number of the transmission supporting rod units are respectively multiple, each check device unit is at least connected with one transmission supporting rod unit, each transmission supporting rod unit is connected to the transmission main rod, the number of the reciprocating power connecting rods is at least one, and each reciprocating power connecting rod is respectively connected with the transmission main rod.

8. The closed circuit ash removal precipitator of claim 7, wherein: the dust remover check system further comprises a plurality of adjusting units, each check unit corresponds to one adjusting unit, each adjusting unit comprises an upper adjusting plate and a lower adjusting plate, each lower adjusting plate is connected with the transmission support rod unit connected to the check unit corresponding to the lower adjusting plate, the upper adjusting plate is located above the transmission main rod, and the lower adjusting plate is located below the transmission main rod.

9. The closed circuit ash removal precipitator of claim 7, wherein: the transmission main rod is a square pipe.

10. The closed circuit ash removal precipitator of claim 7, wherein: the dust remover non-return system also comprises a guide component, wherein a guide groove is arranged on one surface of the guide component, which is opposite to the transmission main rod, and a guide convex block is connected with one surface of the transmission main rod, which is opposite to the guide groove.