CN217783556U - Air volume adjusting structure for underground ventilating duct and underground ventilating system - Google Patents
Air volume adjusting structure for underground ventilating duct and underground ventilating system Download PDFInfo
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- CN217783556U CN217783556U CN202220629799.0U CN202220629799U CN217783556U CN 217783556 U CN217783556 U CN 217783556U CN 202220629799 U CN202220629799 U CN 202220629799U CN 217783556 U CN217783556 U CN 217783556U
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Abstract
The utility model relates to an air regulation structure and ventilation system in pit for air pipe in pit, this air regulation structure includes air regulation piece and installing support, and air regulation piece is used for setting up between coaxial first air pipe and second air pipe, and air regulation piece movably installs in the installing support to can change the air intake area of air intake department of second air pipe, with the regulation from the air pipe's of first air pipe inflow second air pipe amount of wind. The air volume adjusting part changes the air inlet area of the second ventilation pipeline, so that the air volume entering the working surface through the second ventilation pipe can be adjusted, the air volume entering the working surface through the second ventilation pipe is allowed to be adjusted according to the air pumping volume of the dust remover to the working surface, the air volume entering the working surface through the second ventilation pipe is slightly larger than the air pumping volume of the dust remover, the ventilation machine and the dust remover can reach a better matching state, and the dust fall and the dust removal effect of the environment at the working surface are improved.
Description
Technical Field
The utility model relates to a ventilation design technical field in the pit, specifically relates to an air regulation structure and ventilation system in the pit for underground ventilation pipe.
Background
In underground excavation projects such as coal mines and the like, the dust raising condition of a working face is very serious, and a press-in local ventilator is often adopted to be matched with a long-press short-dehumidifying dust remover to remove dust and fall dust in the environment of the working face.
However, in the related art, because the ventilation air volume of the underground ventilation pipeline cannot be adjusted, the air volume entering the working surface may be much larger than the air draft volume of the dust remover to the working surface, so that the ventilator and the dust remover cannot be effectively matched, and the dust removing and settling effects are poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an air regulation structure and ventilation system in pit for air pipe in pit, this air regulation structure can adjust air pipe's in pit air pipe's amount of wind effectively, improves dust removal, dust fall effect in the pit.
In order to achieve the above object, according to one aspect of the present disclosure, there is provided an air volume adjusting structure for a down-hole ventilation duct, the air volume adjusting structure comprising an air volume adjusting member and a mounting bracket, the air volume adjusting member being configured to be disposed between a first ventilation duct and a second ventilation duct which are coaxial, the air volume adjusting member being movably mounted to the mounting bracket and being capable of changing an air intake area at an air intake of the second ventilation duct to adjust an air volume flowing from the first ventilation duct into the second ventilation duct.
Optionally, the mounting bracket includes a mounting rod, the mounting rod is followed the axial extension of first air pipe, the edge of air regulation piece is formed with connecting portion, connecting portion rotatable coupling in the mounting rod.
Optionally, the air regulation structure still includes the stop part, the stop part install in the installing support, the air regulation piece is located first air pipe with between the stop part, but connecting portion axial displacement and circumferential direction ground cover are located the installation pole, the stop part is used for the backstop to be in the air regulation piece deviates from one side of first air pipe, be formed with the rotation stopping round pin on the stop part, be formed with on the air regulation piece and be used for supplying rotation stopping round pin male through-hole.
Optionally, the number of the through holes is multiple, the rotation stopping pin can be inserted into any one of the through holes, the connecting line between the through holes is an arc line, and the circle center corresponding to the arc line is the center of the mounting rod.
Optionally, the stopper includes a mounting ring and a plurality of support ribs, the stopper is mounted to the mounting bracket through the mounting ring, the plurality of support ribs are radial, one ends of the plurality of support ribs are connected to each other, the other ends of the plurality of support ribs are connected to the mounting ring, and the rotation stopping pin is formed on the mounting ring.
Optionally, the air volume adjusting piece is provided with an operating part, and the operating part is used for being matched with an operating rod so that a user can control the movement of the air volume adjusting piece through the operating rod.
Optionally, the operating part is a through hole formed on the air volume adjusting piece, and the through hole can be inserted by the operating lever.
Optionally, the installing support includes two solid fixed rings and many connecting rods, two gu fixed ring is used for fixing respectively on first air pipe's outer wall and second air pipe's outer wall, many the connecting rod is all connected two gu between the fixed ring.
Optionally, the distance between the air volume adjusting piece and the air outlet of the first ventilation duct is 50mm-100mm.
According to another aspect of the present disclosure, there is also provided a downhole ventilation system including a first ventilation duct, a second ventilation duct, and the air volume adjusting structure of any one of the above technical aspects.
Through the technical scheme, this disclosure changes the air inlet area of second vent pipe through the air regulation spare that sets up, make the amount of wind that gets into the working face through the second vent pipe can be adjusted, thereby allow to adjust the intake through the second vent pipe entering working face according to the amount of wind of taking out of dust shaker to the working face, make the intake that gets into the working face through the second vent pipe slightly be greater than the amount of wind of dust shaker, that is to say, make the amount of wind that returns of working face department slightly be greater than the amount of wind of dust shaker, and then realize that ventilation blower and dust shaker can reach better cooperation state, promote the dust fall of working face department environment, the dust removal effect.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
fig. 1 is a schematic perspective view of an air volume adjusting structure according to an exemplary embodiment of the present disclosure, in which a first ventilation duct and a second ventilation duct are also shown;
fig. 2 is a schematic perspective view of a mounting bracket of an air volume adjusting structure according to an exemplary embodiment of the present disclosure, in which a stopper is also shown;
fig. 3 is a schematic perspective view of an air volume adjusting structure according to an exemplary embodiment of the present disclosure;
fig. 4 is a schematic perspective view of an air volume adjusting member of an air volume adjusting structure according to an exemplary embodiment of the present disclosure;
fig. 5 is a schematic perspective view of an air volume adjusting structure according to an exemplary embodiment of the present disclosure, in which a first ventilation duct, a second ventilation duct, and an operating lever are also shown.
Description of the reference numerals
1-a first ventilation duct; 2-a second vent conduit; 3, an air volume adjusting part; 31-a connecting portion; 32-a via hole; 33-a manipulation section; 34-a via hole; 4, mounting a bracket; 41-mounting a rod; 42-a fixed ring; 43-connecting rod; 5-a stop member; 51-a rotation stop pin; 52-a mounting ring; 53-support ribs; 6-operating the rod.
Detailed Description
The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
In the present disclosure, unless otherwise specified the use of directional terms such as "inner" and "outer" refer to the inner and outer of a particular structural profile, and the use of terms such as "first" and "second" is intended only to distinguish one element from another and is not sequential or significant. Additionally, the use of the directional terms above are merely intended to simplify the description of the present disclosure, and do not indicate or imply that the referenced device or element must have a particular orientation, configuration, and operation in a particular orientation, and should not be taken as limiting the present disclosure.
According to one aspect of the present disclosure, the present disclosure provides an air volume adjusting structure for a down-hole ventilation duct, the air volume adjusting structure includes an air volume adjusting part 3 and a mounting bracket 4, the air volume adjusting part 3 is used for being disposed between a first ventilation duct 1 and a second ventilation duct 2 which are coaxial, the air volume adjusting part 3 is movably mounted on the mounting bracket 4 and can change an air inlet area at an air inlet of the second ventilation duct 2 to adjust an air volume flowing into the second ventilation duct 2 from the first ventilation duct 1.
Through the technical scheme, this disclosure changes the air inlet area of second vent pipe 2 through air regulation piece 3 that sets up, make the amount of wind that gets into the working face through second vent pipe 2 can be adjusted, thereby allow to adjust the intake of getting into the working face through second vent pipe 2 according to the amount of wind of taking out of dust shaker to the working face, the intake that makes to get into the working face through second vent pipe 2 slightly is greater than the amount of wind of dust shaker, that is to say, make the amount of wind that returns of working face department slightly is greater than the amount of wind of dust shaker, and then realize that ventilation blower and dust shaker can reach better cooperation state, promote the dust fall of working face department environment, the dust removal effect.
It will be appreciated that there are a variety of embodiments of the movement of the stroke adjuster 3 on the mounting bracket 4 in the present disclosure. For example, in an exemplary embodiment, as shown in fig. 1, 3 and 5, the mounting bracket 4 may include a mounting rod 41, the mounting rod 41 extends in the axial direction of the first ventilation duct 1, a connecting portion 31 is formed at an edge of the air volume adjusting member 3, and the connecting portion 31 may be rotatably connected to the mounting rod 41. That is, the air quantity adjusting member 3 is rotatably mounted on the mounting bracket 4. The air volume adjusting part 3 uses the mounting rod 41 as a rotation center, and in the process of rotating around the mounting rod 41, the air volume adjusting part 3 can gradually change the air inlet area of the air inlet of the shielded second ventilation pipeline 2, so that the air volume of the first ventilation pipeline 1 entering the second ventilation pipeline 2 can be adjusted.
In another embodiment, the airflow rate regulator 3 is movably mounted on the mounting bracket 4. Particularly, can set up the slide rail on the installing support 4, the direction of slide rail is parallel with the cross section of the air intake of second vent pipe 2, and air regulation piece 3 installs in the slide rail, and air regulation piece 3 is in the motion process along the slide rail, also can change the air inlet area of the air intake of second vent pipe 2 that shelters from gradually.
For the stability of reinforcing air volume adjusting piece 3 under the effect of the wind current, the air volume adjusting structure can also include a stop piece 5, the stop piece 5 is installed in the installing support 4, the air volume adjusting piece 3 is located between the first ventilation pipeline 1 and the stop piece 5, the connecting portion 31 can axially move and can be circumferentially rotatably sleeved on the installing rod 41, the stop piece 5 is used for stopping one side of the air volume adjusting piece 3 departing from the first ventilation pipeline 1, a rotation stopping pin 51 is formed on the stop piece 5, and a through hole 32 for inserting the rotation stopping pin 51 is formed on the air volume adjusting piece 3.
On the one hand, the stop part 5 can play the effect of stopping the movement of the air volume adjusting part 3 along the axial direction of the first ventilation pipeline 1 under the action of the airflow, so that the impact resistance of the air volume adjusting part 3 is enhanced, the stability of the air volume adjusting part 3 under the action of the airflow is improved, and the effect of stopping the airflow by the air volume adjusting part 3 due to the influence of the blowing of the air volume adjusting part 3 can be avoided. On the other hand, the rotation stopping pin 51 formed on the stop member 5 is matched with the through hole 32 on the air volume adjusting member 3, so that the function of fixing the position of the air volume adjusting member 3 can be achieved, the shielding position of the air volume adjusting member 3 can be fixed, the effect of stably controlling the air volume entering the second ventilation pipeline 2 is achieved, and the air volume flowing into the second ventilation pipeline 2 can be guaranteed to be stable at a certain size.
As an exemplary embodiment of the present disclosure, as shown in fig. 1 and 3 to 5, the air volume adjusting member 3 of the present disclosure may have a plurality of through holes 32, the rotation stopping pin 51 may be inserted into any one of the through holes 32, a connection line between the plurality of through holes is an arc line, and a center of a circle corresponding to the arc line is a center of the mounting rod 41.
So, can conveniently carry out multilevel control to air regulation piece 3's fixed position to the realization carries out multilevel control to the amount of wind that gets into second vent pipe 2, makes air regulation piece 3 can adapt to the ventilation blower and the dust shaker of different power, can remove dust, the needs of dust fall according to the working face, adjusts the amount of wind of suitable size, with dust removal, the dust fall effect of promotion air regulation piece 3 to working face department.
To further enhance the structural strength of the stopper 5, as an exemplary embodiment of the present disclosure, as shown in fig. 1 to 3, the stopper 5 of the present disclosure may include a mounting ring 52 and a plurality of support ribs 53, the stopper 5 is mounted to the mounting bracket 4 through the mounting ring 52, the plurality of support ribs 53 are formed in a radial shape, one ends of the plurality of support ribs 53 are connected to each other, the other ends of the plurality of support ribs 53 are connected to the mounting ring 52, and the rotation stopping pin 51 is formed on the mounting ring 52. The radial support ribs 53 can enhance the structural strength of the mounting ring 52 and enhance the stopping effect of the mounting ring 52 on the air volume adjusting member 3 under the action of the wind flow.
In another embodiment, the stopper 5 of the present disclosure may include a mounting ring 52 and a plurality of reinforcing ribs, the stopper 5 is mounted on the mounting bracket 4 through the mounting ring 52, the plurality of reinforcing ribs are arranged in parallel in the mounting ring 52, and both ends of each reinforcing rib are fixedly connected with the mounting ring 52. In this way, the effect of increasing the structural strength of the stopper 5 can also be achieved.
In order to reduce the number of times of ascending operations of the user, the air volume adjusting member 3 is provided with an operating part 33, and the operating part 33 is used for cooperating with the operating lever 6 so that the user can control the movement of the air volume adjusting member 3 through the operating lever 6. Because first air pipe 1 and second air pipe 2 all set up at the top in excavation tunnel, have great difference in height with the ground in tunnel, the installation all needs the user to ascend a height the operation with the regulation, the in-process of ascending a height not only the safety risk is great, the operation of ascending a height still has the process such as set up the operation panel in advance moreover, can cause the long problem of operating time that ascends a height to a certain extent, thereby the efficiency of the process of installation and regulation is also lower. By arranging the operation part 33, the user can directly operate the air volume adjusting member 3 on the tunnel ground without ascending a height. So, operating time has been reduced to promote operating efficiency, and can also avoid the risk that the operation of ascending a height brought.
The manipulation part 33 of the present disclosure has various embodiments, and as an exemplary embodiment, as shown in fig. 5, the manipulation part 33 may be a through hole 34 formed on the air volume adjusting member 3, the through hole 34 being capable of inserting the manipulation lever 6. That is to say, the operating part 33 can be a through hole or a blind hole, one end of the operating lever 6 is inserted into the through hole or the blind hole, and the position of the air volume adjusting part 3 is controlled by the operating lever 6, so that the adjustment of the air volume entering the second ventilation pipeline 2 is realized, and the structure is simple and the operation is convenient. For example, when the operation part 33 is a through hole formed in the air volume adjusting member 3, the user inserts one end of the operation lever 6 into the through hole, takes out the air volume adjusting member 3 from the rotation stopping pin 51 by using the operation lever 6, and then matches the through hole 32 at the corresponding position on the air volume adjusting member 3 with the rotation stopping pin 51 as required to adjust the position of the air volume adjusting member 3, thereby adjusting the air intake area of the air intake into the second air duct 2 by the air volume adjusting member 3.
In another embodiment of the present disclosure, the operation part 33 may also be formed as a collar protruding from the air volume adjusting member 3, a hook is disposed on the top of the operation lever 6, the hook can penetrate into the collar, the air volume adjusting member 3 can be taken out from the rotation stopping pin 51 by means of the hook and the collar, and then the through hole 32 at the corresponding position on the air volume adjusting member 3 is matched with the rotation stopping pin 51 as required, so as to adjust the position of the air volume adjusting member 3.
The mounting bracket 4 of the present disclosure can have a variety of embodiments. For example, as shown in fig. 1 to 3 and 5, in an exemplary embodiment of the present disclosure, the mounting bracket 4 may include two fixing rings 42 and a plurality of connecting rods 43, the two fixing rings 42 are respectively used to be fixed on the outer walls of the first ventilation duct 1 and the second ventilation duct 2, and the plurality of connecting rods 43 are connected between the two fixing rings 42. Adopt the installing support 4 of solid fixed ring 42's form, on the one hand, solid fixed ring 42 is good with first air pipe 1 and second air pipe 2's connectivity, can directly get up solid fixed ring 42 and first air pipe 1 and second air pipe 2's outer wall welded fastening, convenient operation connects reliably. On the other hand, the fixing ring 42 does not affect the air flow path between the first ventilation duct 1 and the second ventilation duct 2, and does not interfere with the air flow movement between the first ventilation duct 1 and the second ventilation duct 2.
In another embodiment of the present disclosure, the fixing portion may be directly formed by a plurality of fixing rods, specifically, one end of each of the plurality of fixing rods is fixedly connected to the first ventilation duct 1, and the other end of each of the plurality of fixing rods is fixedly connected to the second ventilation duct 2, so as to also function as the mounting bracket 4.
In order to further enhance the dust removal and dust fall effects of the working surface, the distance between the air volume adjusting piece 3 and the air outlet of the first ventilation pipeline 1 is 50mm-100mm. Thus, when the airflow of the first ventilation duct 1 passes through the airflow rate adjusting member 3, a part of the airflow which is not blocked by the airflow rate adjusting member 3 enters the second ventilation duct 2, and at this time, the airflow rate adjusting member 3 plays a role in adjusting the airflow rate entering the second ventilation duct 2. The airflow that another part was blockked by air regulation 3 can be at air regulation 3 departments and roll over to the inside air wall that forms of tunnel, and this air wall can block that the working face foul wind gets into the return air and flow to with the dust shaker cooperation, promote dust removal, dust fall effect more effectively.
It can be understood that the distance between the air volume adjusting piece 3 and the air outlet of the first ventilation duct 1 cannot be too wide or too narrow. The spacing is too wide or too narrow, can not form effectual blast wall, can not form effective cooperation with the dust shaker.
According to another aspect of the present disclosure, the present disclosure also provides a downhole ventilation system, which includes the first ventilation duct 1, the second ventilation duct 2 and the air volume adjusting structure of any one of the above technical solutions.
It should be noted that, according to the relevant regulations of the ventilation duct work on the working surface, the distance between the air outlet of the ventilation duct and the working surface cannot be greater than 20 meters. The length of a single section of the existing ventilation pipeline is 10 meters, after the ventilation pipeline close to a working face is continuously excavated forwards on the working face, the distance between the outlet of the ventilation pipeline further extended and connected on the ventilation pipeline and the working face is about 10 meters, and the distance between the air suction inlet of the dust remover and the working face is not more than 5 meters. Therefore, in order to enable coal dust and dust generated in the tunneling process of the working face to be closer to the air suction opening of the dust remover, the air volume adjusting structure can be arranged between the first section of ventilating duct and the second section of ventilating duct which are close to the working face.
After the working face is continuously excavated forward for a certain distance, the position of the air volume adjusting structure can be adjusted as required, so that the air volume adjusting structure is arranged between a first section of air pipeline and a second section of air pipeline which are close to the working face, and the dust removing and dust settling effects on the working face are guaranteed.
The following are the test results of the present disclosure in the practical application process, and the test is performed by using a position 3 meters away from the air suction port of the dust remover as a test place in the direction away from the working surface.
During normal production, the concentration of total dust in the tunnel is 60.9mg/m under the shutdown state of the dust remover 3 The concentration of the respiratory dust is 28.0mg/m 3 。
During normal production, the concentration of the whole dust in the tunnel is 32.3mg/m under the starting state of the dust remover 3 The concentration of the respiratory dust is 15.0mg/m 3 。
The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
It should be noted that, in the above embodiments, the various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations will not be further described in the present disclosure.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.
Claims (10)
1. The air volume adjusting structure for the underground ventilation pipeline is characterized by comprising an air volume adjusting piece (3) and a mounting bracket (4), wherein the air volume adjusting piece (3) is arranged between a first ventilation pipeline (1) and a second ventilation pipeline (2) which are coaxial, the air volume adjusting piece (3) is movably mounted on the mounting bracket (4) and can change the air inlet area at the air inlet of the second ventilation pipeline (2) so as to adjust the air volume flowing into the second ventilation pipeline (2) from the first ventilation pipeline (1).
2. The air volume adjusting structure according to claim 1, characterized in that the mounting bracket (4) includes a mounting rod (41), the mounting rod (41) extends in the axial direction of the first ventilation duct (1), a connecting portion (31) is formed at an edge of the air volume adjusting member (3), and the connecting portion (31) is rotatably connected to the mounting rod (41).
3. The air volume adjusting structure according to claim 2, further comprising a stop member (5), wherein the stop member (5) is mounted on the mounting bracket (4), the air volume adjusting member (3) is located between the first ventilation duct (1) and the stop member (5), the connecting portion (31) is axially movable and circumferentially rotatably sleeved on the mounting rod (41), the stop member (5) is used for stopping one side of the air volume adjusting member (3) departing from the first ventilation duct (1), a rotation stopping pin (51) is formed on the stop member (5), and a through hole (32) for inserting the rotation stopping pin (51) is formed on the air volume adjusting member (3).
4. The air volume adjusting structure according to claim 3, wherein a plurality of through holes (32) are provided, the rotation stopping pin (51) can be inserted into any one of the through holes (32), a connecting line between the plurality of through holes is an arc line, and a circle center corresponding to the arc line is a center of the mounting rod (41).
5. The air volume adjusting structure according to claim 3, characterized in that the stopper (5) includes a mounting ring (52) and a plurality of support ribs (53), the stopper (5) is mounted to the mounting bracket (4) through the mounting ring (52), the plurality of support ribs (53) are in a radial shape, one ends of the plurality of support ribs (53) are connected to each other, the other ends of the plurality of support ribs (53) are connected to the mounting ring (52), and the rotation stop pin (51) is formed on the mounting ring (52).
6. Air volume adjusting structure according to any one of claims 1-5, characterized in that the air volume adjusting member (3) has an operating portion (33) thereon, the operating portion (33) being adapted to cooperate with an operating lever (6) to enable a user to control the movement of the air volume adjusting member (3) through the operating lever (6).
7. Air volume adjusting structure according to claim 6, wherein the operating portion (33) is a through hole (34) formed in the air volume adjusting member (3), the through hole (34) being into which the operating lever (6) can be inserted.
8. Air volume adjusting structure according to any one of claims 1-5, characterized in that the mounting bracket (4) comprises two fixing rings (42) and a plurality of connecting rods (43), the two fixing rings (42) are respectively used for fixing on the outer wall of the first ventilation duct (1) and the outer wall of the second ventilation duct (2), and the plurality of connecting rods (43) are connected between the two fixing rings (42).
9. Air volume adjusting structure according to any one of claims 1-5, characterized in that the distance between the air volume adjusting piece (3) and the air outlet of the first ventilation duct (1) is 50-100 mm.
10. A downhole ventilation system, comprising a first ventilation duct (1), a second ventilation duct (2) and an air volume adjusting structure according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220629799.0U CN217783556U (en) | 2022-03-21 | 2022-03-21 | Air volume adjusting structure for underground ventilating duct and underground ventilating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220629799.0U CN217783556U (en) | 2022-03-21 | 2022-03-21 | Air volume adjusting structure for underground ventilating duct and underground ventilating system |
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| Publication Number | Publication Date |
|---|---|
| CN217783556U true CN217783556U (en) | 2022-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220629799.0U Active CN217783556U (en) | 2022-03-21 | 2022-03-21 | Air volume adjusting structure for underground ventilating duct and underground ventilating system |
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| Country | Link |
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| CN (1) | CN217783556U (en) |
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