CN211921656U - Sintering machine and pneumatic sealing device - Google Patents
Sintering machine and pneumatic sealing device Download PDFInfo
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- CN211921656U CN211921656U CN202020532036.5U CN202020532036U CN211921656U CN 211921656 U CN211921656 U CN 211921656U CN 202020532036 U CN202020532036 U CN 202020532036U CN 211921656 U CN211921656 U CN 211921656U
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Abstract
The utility model discloses a sintering machine and pneumatic sealing device. The pneumatic sealing device comprises a negative pressure bin, a communicating pipe, a bypass pipe, a dust remover and an air quantity compensating pipe. The negative pressure chamber is communicated with a gap below a trolley beam of the sintering machine, the communicating pipe is communicated with the negative pressure chamber, the communicating pipe is communicated with the sintering ash discharge system, the bypass pipe is communicated with the communicating pipe, a negative pressure measuring hole and a temperature measuring hole are arranged on the bypass pipe, the dust remover is provided with an ash discharge port, an air inlet and an air outlet, the air inlet is communicated with the bypass pipe, the air quantity compensating pipe is communicated with the air outlet, and an igniter combustion fan is arranged at the air quantity compensating pipe. According to the utility model discloses a pneumatic sealing device sets up the negative pressure storehouse through the bottom clearance department at the platform truck roof beam to derive the air current in the clearance through parts such as closed tube, bypass pipe, and then can realize the sealing to clearance department, prevent that the sintering machine from forming the air leakage in clearance department.
Description
Technical Field
The utility model belongs to the technical field of steel smelting technique and specifically relates to a sintering machine and pneumatic sealing device are related to.
Background
In the steel smelting industry, compared with iron making, steel making and steel rolling, the sintering specialty has the professional characteristics of short development history, complex production procedures, large power configuration of a main machine, large power loss and capability of implementing full-automatic control operation. Wherein, the large loss of the wind supply power of the main machine is the subject of the sintering profession for hundreds of years. The problem is that the sintering process and the main air pumping and supplying process have two leaks and one leak, wherein the two leaks are the leaks at two sides of the sintering machine and the leaks of No. 1 air boxes at two ends of the sintering machine and air boxes at the tail end of the sintering machine, and the one leak is the wind resistance formed by the blockage of a gap of a grate bar of a sintering trolley. In the 'air leakage' treatment research of sintering speciality. The air leakage of the sintering machine is divided into two types, namely a controllable factor (namely a management factor) and a technical factor (namely an uncontrollable factor). Controllable factors are factors that can be resolved by enterprise management means.
Under the control of strict technological conditions, the sintering material is fed into a trolley chain formed by trolleys through a feeding and ignition system, and the whole sintering process is completed under the action of air suction and air supply of a main exhaust fan along with the continuous operation of the sintering machine. In the air exhausting and supplying process of the main exhaust fan, air leakage at two ends of the sintering machine occurs at an air box and a tail end air box. In order to inhibit air leakage at the position, sealing devices are arranged at two ends of the air box.
The traditional sealing device consists of a sealing plate box body, a spring and a sealing plate, but is limited by the design technology of the traditional sealing device and the special environment of the position. The aim of complete sealing can not be achieved in actual production, so that the sealing method becomes one of the difficult problems of large air leakage in the sintering industry, and serious limitation of sintering production is formed. And the sealing dead angle is easy to form due to the limitation of the design structure conditions of the two ends of the sintering machine.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a pneumatic sealing device, pneumatic sealing device has simple structure, the good advantage of leakproofness.
The utility model discloses still provide a sintering machine, the sintering machine has as above pneumatic sealing device.
According to the utility model discloses pneumatic sealing device, include: the negative pressure cabin is internally provided with a negative pressure cavity, and the negative pressure cavity is communicated with a gap below a trolley beam of the sintering machine; the communicating pipe is communicated with the negative pressure cavity and communicated with a sintering ash discharge system; the bypass pipe is communicated with the communicating pipe, and a negative pressure measuring hole and a temperature measuring hole are formed in the bypass pipe; the dust remover is provided with an ash discharge port, an air inlet and an air outlet, and the air inlet is communicated with the bypass pipe; the air quantity compensation pipe is communicated with the air outlet, and an igniter combustion fan is arranged at the air quantity compensation pipe.
According to the utility model discloses pneumatic sealing device sets up the negative pressure storehouse through the bottom clearance department at the platform truck roof beam to derive the air current in the clearance through parts such as closed tube, bypass pipe, and then can realize the sealing to clearance department, prevent that the sintering machine from forming the hourglass wind in clearance department.
In some embodiments, the negative pressure chamber is in the shape of an inverted trapezoid or a funnel.
In some embodiments, the negative pressure chamber has a polygonal or circular or semicircular cross section.
In some embodiments, the cross-sectional area of the negative pressure chamber is 0.003-0.03m2。
According to the utility model discloses sintering machine, include: a trolley beam; the air box is arranged at the bottom of the trolley beam; the baffle plate is sleeved outside the air box, and a gap is formed between the upper end surface of the baffle plate and the bottom of the trolley beam; a first sealing device spaced apart from the separator; and the second sealing device is a pneumatic sealing device and is positioned between the first sealing device and the partition plate, and the second sealing device and the first sealing device jointly seal the gap.
According to the utility model discloses sintering machine sets up pneumatic sealing device through the bottom clearance department at the platform truck roof beam, like this, can be through the air current shutoff in negative pressure or malleation with the clearance to can avoid the air current to pass through the clearance and leak.
In some embodiments, the second sealing device comprises: the negative pressure cabin is internally provided with a negative pressure cavity, and the negative pressure cavity is communicated with the gap; the communicating pipe is communicated with the negative pressure cavity and communicated with a sintering ash discharge system; a bypass pipe in communication with the communication pipe; the dust remover is provided with an ash discharge port, an air inlet and an air outlet, and the air inlet is communicated with the bypass pipe.
In some embodiments, the second sealing device further comprises: and the air quantity compensating pipe is communicated with the air outlet.
In some embodiments, an igniter combustion fan is arranged at the air volume compensation pipe.
In some embodiments, the bypass pipe is a plurality of bypass pipes, and each bypass pipe is communicated with the communicating pipe.
In some embodiments, the head end and the tail end of the sintering machine are provided with second sealing devices.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural view of a sintering machine according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a second sealing device according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a second sealing device according to an embodiment of the present invention;
FIG. 4 is a schematic view of the gap of FIG. 3 and the airflow within the suction chamber;
FIG. 5 is a schematic view of a portion of the second sealing device of FIG. 3;
FIG. 6 is a schematic view of a portion of the second sealing device of FIG. 3;
figure 7 is a cross-sectional view of a capsule of a second sealing device according to an embodiment of the invention;
figure 8 is a cross-sectional view of a capsule of a second sealing device according to an embodiment of the present invention;
fig. 9 is a cross-sectional view of a capsule of a second sealing device according to an embodiment of the invention.
Reference numerals:
the sintering machine 100 is driven by a power source,
the length of the trolley beam 110, the frame 111,
the air box 120 is provided with a blower 120,
the length of the partition 130, the gap 131,
the first sealing means 140 is provided on the outer surface of the container,
a second sealing means 150, a negative pressure chamber 151, a negative pressure chamber 152, a control valve 153,
the communication pipe 160 is connected to the outside of the casing,
a bypass pipe 170, a negative pressure measuring hole 171, a temperature measuring hole 172,
a dust remover 180, an ash discharge port 181, an air inlet 182, an air outlet 183,
an air volume compensating pipe 190, an igniter combustion fan 191 and a sintering ash discharging system 192.
Detailed Description
Embodiments of the present invention are described in detail below, and the embodiments described with reference to the drawings are exemplary.
A sintering machine 100 and a pneumatic sealing device according to an embodiment of the present invention will be described below with reference to fig. 1 to 9. It should be noted that the pneumatic sealing means may be adapted toIt is suitable for different sizes of iron ore powder belt sintering machine and step sintering machine (or simply called sintering machine 100). Wherein, the sintering machine 100 can be 18m2To 700m2And different specifications of equal large span. Sintering machines 100 of different specifications and models require different designs of pneumatic sealing devices. Therefore, the first procedure for implementing the use of the pneumatic sealing device is to make the pneumatic sealing device and the corresponding configuration design according to the sintering machines 100 of different specifications and models and the supporting facilities of different sintering lines.
As shown in fig. 1-9, a pneumatic sealing device according to an embodiment of the present invention includes: the negative pressure bin 151, the communicating pipe 160, the bypass pipe 170, the dust remover 180 and the air volume compensating pipe 190. It should be noted that the relevant parts of the pneumatic sealing device can be made of common hot-rolled A3 steel, the required steel can be cut and blanked by a plate shearing machine, and the bolt holes can be drilled. To facilitate the reduction of field installation time and work, the various components of the pneumatic sealing device may be fabricated at a machining plant and then assembled and connected at the field of use.
In addition, when each part of the pneumatic sealing device is installed, the two parts with the connection relation can be installed together by adopting a welding method, when in welding, a welding seam of the pneumatic sealing device can be formed by welding T-42 welding rods, the height of welding meat is 5-6mm, the welding seam is a continuous welding seam, slag inclusion and air leakage cannot exist in the welding seam, and the welding seam can bear 1.2 times of the negative pressure set by the pneumatic sealing device for pressure test. When flange connections are used, rubber asbestos sheet gaskets of 3-5mm thickness can be used for each flange connection.
Specifically, the negative pressure silo 151 has a negative pressure chamber 152 therein, and the negative pressure chamber 152 communicates with the gap 131 below the pallet beam 110 of the sintering machine 100. The communicating pipe 160 is communicated with the negative pressure chamber 152, and the communicating pipe 160 is communicated with the sintering ash discharging system 192. Furthermore, the communicating pipe 160 may communicate with the bypass pipe 170, and the air flow in the gap 131 may enter the bypass pipe 170 through the negative pressure chamber 152 and the communicating pipe 160. In order to control the pressure and temperature of the air flow in the bypass pipe 170, a negative pressure measuring hole 171 and a temperature measuring hole 172 are provided in the bypass pipe 170, so that a negative pressure measuring device may be provided in the negative pressure measuring hole 171 and a temperature measuring device may be provided in the temperature measuring hole 172.
To facilitate the dust removal process of the airflow within the bypass duct 170, as shown in fig. 2, a dust remover 180 may be in communication with the bypass duct 170. Specifically, the dust collector 180 has an ash discharge port 181, an air inlet 182, and an air outlet 183, and the air inlet 182 communicates with the bypass pipe 170, whereby the dust-cleaned air flow can be discharged through the air outlet, and the dust left after the filtering can be discharged to the outside of the dust collector 180 through the ash discharge port 181. The air quantity compensating pipe 190 is communicated with the air outlet 183, and an igniter combustion fan 191 is arranged at the air quantity compensating pipe 190. The air volume compensating duct 190 may communicate with a blower.
According to the utility model discloses pneumatic sealing device sets up negative pressure storehouse 151 through bottom clearance 131 department at platform truck roof beam 110 to derive the air current in clearance 131 through parts such as closed tube 160, bypass pipe 170, and then can realize the sealed to clearance 131 department, prevent that sintering machine 100 from forming the air leakage in clearance 131 department.
In order to promote a sealing relationship between gap 131 and negative pressure reservoir 151, negative pressure cavity 152 may be of an inverted trapezoidal or funnel type, according to some embodiments of the present invention. The opening of the end of the inverted trapezoid or funnel-shaped negative pressure chamber 152 communicating with the gap 131 is large, so that the air flow in the gap 131 is easily guided to the negative pressure chamber 152 of the negative pressure bin 151, and the sealing between the negative pressure bin 151 and the bottom of the trolley beam 110 can be improved, thereby preventing the air flow from escaping through the gap 131 between the bottom of the trolley beam 110 and the negative pressure bin 151.
Further, the shape of the cross-section of the negative pressure chamber 152 is not limited thereto, for example, in some embodiments, as shown in fig. 7-8, the cross-section of the negative pressure chamber 152 is polygonal; as yet another example, in other embodiments, as shown in FIG. 9, the negative pressure cavity 152 has a circular or semi-circular cross-section. Here, the "shape of the cross section of the negative pressure chamber 152" refers to a shape that is formed by an intersection line of an inner wall of the negative pressure chamber 151 and the cross section when the negative pressure chamber 151 is cut by a plane parallel to the flow direction of the air flow flowing into the negative pressure chamber 152, and a pattern of the intersection line on the cross section is the "shape of the cross section of the negative pressure chamber 152".
In some embodiments, the cross-sectional area of the sub-ambient pressure cavity 152 may be 0.003-0.03m2. Thus, when the cross-sectional area of the negative pressure chamber 152 satisfies the above conditions, the pneumatic sealing device can be adapted to more models of sintering machines 100.
As shown in fig. 1 to 9, a sintering machine 100 according to an embodiment of the present invention includes: trolley beam 110, bellows 120, diaphragm 130, first seal 140 and second seal 150. The trolley beam 110 may be provided on a frame 111.
Specifically, as shown in fig. 1, the air box 120 is disposed at the bottom of the bogie beam 110, the partition 130 is externally fitted over the air box 120, a gap 131 is provided between the upper end surface of the partition 130 and the bottom of the bogie beam 110, and the first sealing means 140 is spaced apart from the partition 130. The second sealing device 150 is a pneumatic sealing device, the second sealing device 150 is located between the first sealing device 140 and the partition 130, and the second sealing device 150 and the first sealing device 140 jointly seal the gap 131. It should be noted that the pneumatic sealing device can block the air flow in the gap 131 by negative pressure or positive pressure, so as to prevent the air flow from leaking through the gap 131. In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features.
According to the utility model discloses sintering machine 100 through the bottom clearance 131 department at platform truck roof beam 110 set up pneumatic sealing device, like this, can be through the air current shutoff in negative pressure or malleation with clearance 131 to can avoid the air current to leak through clearance 131.
In some embodiments, the sintering machine 100 is provided with one second sealing device 150 at both the head and tail ends, as shown in fig. 1, wherein one second sealing device 150 is located at the left side of the windbox 120, and the second sealing device 150 located at the left side is communicated with the gap 131 at the head end of the sintering machine 100; another second sealing means 150 is located at the right side of the windbox 120, and the second sealing means 150 located at the right side communicates with the tail end gap 131 of the sintering machine 100.
Fig. 4 is an explanatory view of the principle of air leakage of the pneumatic sealing device, in which the negative pressure chamber 152 on the left side is the negative pressure chamber 152 of the second sealing device 150 on the left side, and the negative pressure chamber 152 on the right side is the negative pressure chamber 152 of the second sealing device 150 on the right side. As can be seen from fig. 4: when the air draft negative pressure H1 and H2 exist at the points C3 and C4, and when H1 is equal to H2, the negative pressure air Q1 stops entering from the point C and achieves the purpose of entering only from the point C1. And the air flow Q3 formed at the point C2 under the action of the negative pressure of H2 enters through the point C4 and becomes an air source of useful work. The air leakage at the head and tail of the sintering machine 100 is the useless air Q3 entering from the point C, the negative pressure air Q3 passing through the point C is stopped entering from the point C and all enters from the point C1, and the air leakage is stopped when the negative pressure H1 is more than or equal to H2.
According to some embodiments of the present invention, the second sealing device 150 may include a negative pressure bin 151, a communicating pipe 160, a bypass pipe 170, and a dust collector 180. The negative pressure bin 151 is provided with a negative pressure cavity 152 therein, the negative pressure cavity 152 is communicated with the gap 131, the communicating pipe 160 is communicated with the negative pressure cavity 152, the bypass pipe 170 is communicated with the communicating pipe 160, the airflow in the gap 131 can enter the bypass pipe 170 through the negative pressure cavity 152 and the communicating pipe 160, and further, the communicating pipe 160 can be communicated with the sintering ash discharge system 192. In some examples, the bypass pipe 170 may be multiple, each bypass pipe 170 being in communication with the communication pipe 160. In the description of the present invention, "a plurality" means two or more.
To facilitate the dust removal process of the airflow within the bypass duct 170, as shown in fig. 2, a dust remover 180 may be in communication with the bypass duct 170. The dust collector 180 has an ash discharge port 181, an air inlet 182, and an air outlet 183, the air inlet 182 communicating with the bypass pipe 170. Specifically, the dust collector 180 has an ash discharge port 181, an air inlet 182, and an air outlet 183, and the air inlet 182 communicates with the bypass pipe 170, whereby the dust-cleaned air flow can be discharged through the air outlet, and the dust left after the filtering can be discharged to the outside of the dust collector 180 through the ash discharge port 181. Further, the second sealing device 150 may further include an air volume compensating pipe 190, and the air volume compensating pipe 190 is communicated with the air outlet 183. Furthermore, an igniter combustion fan 191 is arranged at the air volume compensating pipe 190. The air volume compensating duct 190 may communicate with a blower.
In addition, in the embodiment of the present invention, the sintering machine 100 preferably includes a plurality of control valves 153, for example, as shown in fig. 1 and fig. 2, the air volume compensating pipe 190, the ash discharge port 181 of the dust remover 180, and the igniter combustion fan 191 may be provided with the control valves 153, and the control valves 153 may be used to control the flow rate of the fluid at the corresponding positions.
In the description of the present invention, it should be understood that the terms "bottom", "inner", "outer", "circumferential" and the like refer to the orientation or positional relationship shown in the drawings, which are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A pneumatic sealing device, comprising:
the negative pressure cabin is internally provided with a negative pressure cavity, and the negative pressure cavity is communicated with a gap below a trolley beam of the sintering machine;
the communicating pipe is communicated with the negative pressure cavity and communicated with a sintering ash discharge system;
the bypass pipe is communicated with the communicating pipe, and a negative pressure measuring hole and a temperature measuring hole are formed in the bypass pipe;
the dust remover is provided with an ash discharge port, an air inlet and an air outlet, and the air inlet is communicated with the bypass pipe;
the air quantity compensation pipe is communicated with the air outlet, and an igniter combustion fan is arranged at the air quantity compensation pipe.
2. A pneumatic sealing device according to claim 1, wherein the negative pressure chamber is of inverted trapezoidal or funnel shape.
3. The pneumatic sealing device according to claim 1, wherein the cross-section of the negative pressure chamber is polygonal or circular or semicircular.
4. The pneumatic sealing device of claim 1, wherein the cross-sectional area of the sub-pressure chamber is 0.003-0.03m2。
5. A sintering machine, comprising:
a trolley beam;
the air box is arranged at the bottom of the trolley beam;
the baffle plate is sleeved outside the air box, and a gap is formed between the upper end surface of the baffle plate and the bottom of the trolley beam;
a first sealing device spaced apart from the separator;
and the second sealing device is a pneumatic sealing device and is positioned between the first sealing device and the partition plate, and the second sealing device and the first sealing device jointly seal the gap.
6. The sintering machine according to claim 5, characterized in that the second sealing device comprises:
the negative pressure cabin is internally provided with a negative pressure cavity, and the negative pressure cavity is communicated with the gap;
the communicating pipe is communicated with the negative pressure cavity and communicated with a sintering ash discharge system;
a bypass pipe in communication with the communication pipe;
the dust remover is provided with an ash discharge port, an air inlet and an air outlet, and the air inlet is communicated with the bypass pipe.
7. The sintering machine according to claim 6, wherein the second sealing device further comprises:
and the air quantity compensating pipe is communicated with the air outlet.
8. The sintering machine according to claim 7, characterized in that an igniter combustion fan is arranged at the air volume compensating pipe.
9. The sintering machine according to claim 6, wherein the number of bypass pipes is plural, and each of the bypass pipes is communicated with the communicating pipe.
10. The sintering machine according to claim 5, characterized in that the head end and the tail end of the sintering machine are provided with second sealing means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020532036.5U CN211921656U (en) | 2020-04-10 | 2020-04-10 | Sintering machine and pneumatic sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020532036.5U CN211921656U (en) | 2020-04-10 | 2020-04-10 | Sintering machine and pneumatic sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211921656U true CN211921656U (en) | 2020-11-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020532036.5U Expired - Fee Related CN211921656U (en) | 2020-04-10 | 2020-04-10 | Sintering machine and pneumatic sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211921656U (en) |
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2020
- 2020-04-10 CN CN202020532036.5U patent/CN211921656U/en not_active Expired - Fee Related
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Granted publication date: 20201113 |
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