CN211874826U - Mining is for local fan gas elimination guiding device - Google Patents
Mining is for local fan gas elimination guiding device Download PDFInfo
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- CN211874826U CN211874826U CN202020386802.1U CN202020386802U CN211874826U CN 211874826 U CN211874826 U CN 211874826U CN 202020386802 U CN202020386802 U CN 202020386802U CN 211874826 U CN211874826 U CN 211874826U
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Abstract
The utility model discloses a gas silencing and guiding device for a mining local ventilator, which comprises a multistage flow guiding and noise damping cone, a positioning bracket component, a protective cover and a connecting flange, wherein the multistage flow guiding and noise damping cone is laminated up and down and distributed in a clearance type; the opening of the diversion cone of each stage of diversion silencing cone is gradually increased, and the diameter of the diversion cylinder is matched with the aperture of the opening of the diversion cone and is also gradually increased; the inner surfaces and the outer surfaces of the guide cone and the guide cylinder are respectively paved with sound insulation felts; the positioning support assembly comprises a plurality of support rods and a connecting ring, the support rods are arranged between the support tables of each stage of flow guide silencing cone, and the connecting ring is connected with the upper end face of the connecting flange; the protective cover is of a cylindrical structure with an opening at the lower end, a plurality of vent holes are uniformly formed in the protective cover, and the protective cover is covered on the multistage flow guide silencing cone; the lower end of the connecting flange is used for being connected with an air inlet of the ventilator; this device can make in gaseous axial and the annular air intake entering device, reduces the air current noise from the source of air inlet, furthest reduces the air current noise when guaranteeing ventilation efficiency.
Description
Technical Field
The utility model relates to a colliery is ventilated and is fallen technical field of making an uproar, especially relates to a mining is gas noise elimination guiding device for auxiliary ventilating fan.
Background
At present, most ventilators applied to local ventilation of coal mines are disrotatory explosion-proof axial fans, noise generated by the fans in work is very high, the average noise sound pressure level at one meter away from the fans is up to 95-115 decibels generally under the condition that existing silencers are installed on the fans according to actual measurement under a plurality of mines, the noise value is higher than 10-30 decibels required by national industrial and enterprise noise health standard, and the noise exceeding amount is very high. At present, some fan manufacturers install silencers at the inlet and outlet of a fan, but the noise reduction of the silencers is below 10 decibels, but the noise reduction effect is poor.
Meanwhile, the fan inlet adopts a conical barrel current collector, the flow loss of the fan is large, the flow state of the air introduced into the impeller is poor, the air flow axially enters the flow channel along the flow guide cap or the silencer, and the noise control of the fan on the air inlet is not fully considered; resulting in a high flow noise of the air. The traditional diversion cap or silencer has the defects of large weight, inconvenient processing and installation and the like in the structure combination mode and the installation mode.
In addition, due to the fact that the working space in a mine is narrow, noise is not easy to attenuate, the noise generated by the ventilator can cause serious noise pollution to the working environment, and the noise harms the physiological health and the psychological health of workers; moreover, due to the masking effect of the noise of the fan, personnel working in a noise environment cannot perform language communication and cannot timely judge and deal with changes in the surrounding working environment, and due to the interference of the noise, the people in the noise environment are dispersed, the working efficiency is reduced, so unsafe accidents are extremely easy to generate in the noise environment, and personal casualty accidents caused by the influence of the noise of the local ventilator are rare; therefore, an efficient noise elimination device capable of reducing the noise of the local ventilator to meet the national noise sanitation standard of industrial enterprises is urgently needed from the aspects of labor protection and safety production.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a mining for auxiliary ventilating fan gas elimination guiding device can make in gas along radial and annular air intake admission gear, reduces the air current noise from the source of air inlet, furthest reduces the air current noise when guaranteeing ventilation efficiency.
The utility model adopts the technical proposal that:
a mining is for local ventilator gas noise elimination guiding device, including multistage water conservancy diversion noise elimination awl, locating support subassembly, safety cover and flange, the said multistage water conservancy diversion noise elimination awl is laminated from top to bottom, interval type distribution, every stage includes a water conservancy diversion awl of the cone structure of inversion, the upper edge of the water conservancy diversion awl is extended outwards in parallel to form the annular brace table, the tip of the water conservancy diversion awl has openings, the opening connects a draft tube; the opening of the diversion cone of each stage of diversion silencing cone is gradually enlarged (expanded), and the diameter of the diversion cylinder is matched with the aperture of the opening of the diversion cone and is also gradually enlarged; the inner surfaces and the outer surfaces of the guide cone and the guide cylinder are respectively paved with sound insulation felts; the positioning support assembly comprises a plurality of support rods and a connecting ring, the support rods are arranged between the support tables of each stage of flow guide silencing cone, the lower ends of the support rods below the support table of the final stage of flow guide silencing cone are fixed with the upper end surface of the connecting ring, and the connecting ring is connected with the upper end surface of the connecting flange; the protective cover is of a cylindrical structure with an opening at the lower end, a plurality of vent holes are uniformly formed in the protective cover, the protective cover covers the multistage flow guide noise elimination cone, and the lower end of the protective cover is fixed with the upper end face of the connecting ring; the lower end of the connecting flange is used for being connected with an air inlet of the ventilator.
The multistage flow-guiding silencing cone adopts three stages and comprises a superior flow-guiding silencing cone, a middle flow-guiding silencing cone and a final flow-guiding silencing cone, a guide cylinder suspension of the superior flow-guiding silencing cone is positioned in the guide cone of the middle flow-guiding silencing cone, a guide cylinder suspension of the middle flow-guiding silencing cone is positioned in the guide cone of the final flow-guiding silencing cone, and the lower end of the guide cylinder of the final flow-guiding silencing cone is positioned above the connecting ring.
The upper-stage flow guide silencing cone, the middle-stage flow guide silencing cone and the final-stage flow guide silencing cone are all made of metal plates or are made of rubber or plastic through shaping.
The protective cover comprises a main cover cylinder, a transition ring and a connecting cylinder and is made of a porous plate; the top of the main cover cylinder is in butt welding with a supporting table of a higher-level flow guide noise elimination cone, and the inner side wall of the main cover cylinder is respectively welded and fixed with the outer edge of the supporting table of the third-level flow guide noise elimination cone; the lower edge of the main cover cylinder is welded with the outer circular ring of the transition ring, the inner circular ring of the transition ring is welded with the upper edge of the connection cylinder, and the lower edge of the connection cylinder is fixed with the upper end face of the connection ring.
The utility model discloses utilize tertiary water conservancy diversion noise elimination awl, tertiary water conservancy diversion noise elimination awl is from top to bottom and folds pressure, clearance formula distribution, and the water conservancy diversion awl opening crescent of each level water conservancy diversion noise elimination awl, the diameter of draft tube and water conservancy diversion awl opening aperture phase-match also crescent. The opening of the guide cone is gradually increased, and the diameter of the guide cylinder is gradually increased to ensure that the wind current discharged by the guide cylinder of the upper level can be smoothly guided into the air inlet of the ventilator, and ensure that the wind current of the current level can smoothly pass through the guide cylinder of the current level. The three-stage flow guide silencing cone is coaxially installed and fixed from top to bottom, an airflow channel of a gradually expanding type guide cylinder communicated with the air inlet port is formed in the flow guide cone, an annular air inlet is formed in the air inlet port, air can enter the multi-stage flow guide silencing cone along the radial direction and the annular air inlet, air flow can enter the multi-stage flow guide silencing cone from the circumferential direction, air flow noise is reduced from an air inlet source, and the air flow noise is reduced to the maximum extent while the ventilation efficiency is ensured.
Meanwhile, the inner surfaces and the outer surfaces of the guide cone and the guide cylinder are respectively paved with sound insulation felt, when wind current enters the protective cover, the wind current collides with the inner surfaces and the outer surfaces of the guide cone and the guide cylinder, noise carried by the wind current and noise generated by collision are subjected to sound absorption treatment by the sound insulation felt, and therefore noise is reduced.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a perspective schematic view of the present invention;
fig. 3 is a perspective schematic view of the sound-proof felt of the present invention.
Detailed Description
As shown in fig. 1-3, the utility model comprises a multi-stage flow guide noise elimination cone, a positioning bracket component, a protective cover 1 and a connecting flange 2, wherein the multi-stage flow guide noise elimination cone is in up-down laminated and clearance distribution, each stage of flow guide cone 3 comprises an inverted cone structure, the upper edge of the flow guide cone 3 extends outwards in parallel to form an annular supporting platform 4, the tip of the flow guide cone 3 is provided with an opening, and the opening is connected with a flow guide cylinder 5; the opening of the diversion cone 3 of each stage of diversion silencing cone is gradually reduced, and the diameter of the diversion cylinder 5 is gradually increased; and sound-proof felts 6 are paved on the inner surfaces and the outer surfaces of the guide cone 3 and the guide cylinder 5.
As shown in fig. 2, the positioning bracket assembly includes a plurality of support rods 7 and a connecting ring 8, the support rods 7 are disposed between the support platforms 4 of each stage of flow guide noise elimination cone, the lower ends of the support rods 7 below the support platform 4 of the final stage of flow guide noise elimination cone C are fixed to the upper end face of the connecting ring 8, and the connecting ring 8 is connected to the upper end face of the connecting flange 2. The supporting rod 7 is used for supporting the flow guide silencing cone of each stage, so that a certain space is formed between the upper stage and the lower stage of the flow guide silencing cone, and wind flow can enter conveniently. Not only play the effect of support, simultaneously, play certain limited positioning action, with the interval control between the upper and lower level water conservancy diversion noise elimination awl at certain distance, guarantee the high ventilation volume promptly, guarantee again that the noise reduction rate effect is good. Repeated experiments show that the best effect is achieved when the lower end part of the guide shell 5 at the upper stage is arranged 1-3cm above the guide shell 5 at the lower stage.
The protective cover 1 is of a cylindrical structure with an opening at the lower end, a plurality of vent holes 9 are uniformly formed in the protective cover 1, the protective cover 1 covers the multistage flow guide noise elimination cone, and the lower end of the protective cover 1 is fixed with the upper end face of the connecting ring 8; the lower end of the connecting flange 2 is used for being connected with an air inlet of a ventilator.
The multistage flow guide noise elimination cone adopts three stages and comprises a superior flow guide noise elimination cone A, a middle flow guide noise elimination cone B and a final flow guide noise elimination cone C, a guide cylinder 5 suspension of the superior flow guide noise elimination cone A is positioned in a guide cone 3 of the middle flow guide noise elimination cone B, a guide cylinder 5 suspension of the middle flow guide noise elimination cone B is positioned in a guide cone 3 of the final flow guide noise elimination cone C, and the lower end of a guide cylinder 5 of the final flow guide noise elimination cone C is positioned above a connecting ring 8. The utility model discloses not only be limited to the tertiary, set for according to the service environment condition, adopt one-level, second grade, level four, five levels, multistage etc. all can.
The upper-stage flow guide noise elimination cone A, the middle-stage flow guide noise elimination cone B and the final-stage flow guide noise elimination cone C are all made of metal plates or rubber or plastic by molding.
As shown in fig. 1-3, the protecting cover 1 comprises a main cover cylinder 10, a transition ring 11 and a connecting cylinder 12, which are made of porous plates; the top of the main cover cylinder 10 is in butt welding with the support table 4 of the upper-level flow guide noise elimination cone A, and the inner side wall of the main cover cylinder 10 is respectively welded and fixed with the outer edge of the support table 4 of the third-level flow guide noise elimination cone; the lower edge of the main cover cylinder 10 is welded with the outer circular ring of the transition ring 11, the inner circular ring of the transition ring 11 is welded with the upper edge of the connecting cylinder 12, and the lower edge of the connecting cylinder 12 is fixed with the upper end face of the connecting ring 8.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model discloses a water conservancy diversion noise elimination awl adopts the tertiary, including higher level water conservancy diversion noise elimination awl A, intermediate level water conservancy diversion noise elimination awl B and final stage water conservancy diversion noise elimination awl C, every level includes the water conservancy diversion awl 3 of an inverted cone structure, the outside parallel extension of the top edge of water conservancy diversion awl 3 forms cyclic annular brace table 4, the pointed end of water conservancy diversion awl 3 is equipped with the opening, the opening part is connected a draft tube 5, the interior surface and the surface of draft tube 3 and draft tube 5 are all paved and are pasted deadening felt 6; the three-stage flow guide silencing cone is made of metal plates or rubber or plastic by shaping. The three-stage flow guide silencing cones are in up-down laminated and intermittent distribution, a guide cylinder 5 suspension of a superior flow guide silencing cone A is positioned in a guide cone 3 of a middle flow guide silencing cone B, a guide cylinder 5 suspension of the middle flow guide silencing cone B is positioned in a guide cone 3 of a final flow guide silencing cone C, and the lower end of a guide cylinder 5 of the final flow guide silencing cone C is positioned above the connecting ring 8; the opening of the diversion cone 3 of each stage of diversion silencing cone is gradually enlarged, and the diameter of the diversion cylinder 5 is gradually enlarged. The opening of the diversion cone 3 is gradually increased (namely, the inclination angle of the diversion cone 3 is gradually increased), the diameter of the diversion cylinder 5 is gradually increased, on one hand, the wind current discharged by the upper diversion cylinder 5 is ensured to be smoothly guided into the air inlet of the ventilator, and on the other hand, the wind current of the current stage is ensured to be smoothly guided through the diversion cylinder 5 of the current stage.
The utility model discloses a theory of operation: firstly, the air inlet of the device and the ventilator is connected through the connecting flange 2, the device adopts the connecting flange 2, can be detachably connected on required equipment, and is convenient to detach and install. After the installation is finished, the ventilator works, wind flow is poured into the protective cover 1 from the periphery through the vent holes 9 on the protective cover 1, wind entering the upper end of the protective cover 1 enters through the large opening of the diversion cone 3 with the cone structure of the upper diversion noise elimination cone A, the wind flow forms annular wind flow after passing through the diversion cone 3, and then enters into the diversion cone 3 of the middle diversion noise elimination cone B through the diversion cylinder 5 of the upper diversion noise elimination cone A; the wind flow entering from the middle part of the protective cover 1 directly enters the guide cone 3 of the cone structure of the middle-stage guide silencing cone B, forms an annular wind flow after passing through the guide cone 3, and then enters the guide cone 3 of the final-stage guide silencing cone C from the guide cylinder 5 of the middle-stage guide silencing cone; similarly, the wind flow entering from the lower part of the protective cover 1 directly enters the diversion cone 3 of the cone structure of the final diversion noise elimination cone C, and forms an annular wind flow after passing through the diversion cone 3, and then enters the air inlet of the ventilator from the diversion cylinder 5 of the final diversion noise elimination cone.
Meanwhile, as the inner surfaces and the outer surfaces of the guide cone 3 and the guide cylinder 5 are respectively paved with the sound insulation felt 6, after the wind current enters the protective cover 1, the wind current collides with the inner surfaces and the outer surfaces of the guide cone 3 and the guide cylinder 5, and the noise carried by the wind current and the noise sent by the collision are absorbed by the sound insulation felt 6, so that the noise is reduced.
Because the utility model discloses a multistage water conservancy diversion noise elimination awl is fixed from top to bottom coaxial arrangement, form the air current passageway of the gradually expanding draft tube 5 of intercommunication inlet port in the water conservancy diversion awl 3, form annular air intake at the inlet port, can make gaseous along axial and annular air intake get into multistage water conservancy diversion noise elimination awl in, and enable the air current from the circumferencial direction get into multistage water conservancy diversion noise elimination awl in, reduce the air current noise from the source of air inlet, furthest reduces the air current noise when guaranteeing ventilation efficiency.
The utility model discloses a material all adopts light, high-efficient compound novel material goods, has reduced and has possessed the space, has made things convenient for the installation and the maintenance of facility, has realized giving sound insulation again when having realized the ventilation.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.
Claims (4)
1. The utility model provides a mining is gas elimination guiding device for auxiliary ventilating fan which characterized in that: the multi-stage flow guide silencing cone is in up-down laminated and interval distribution, each stage comprises a flow guide cone with an inverted cone structure, the upper edge of the flow guide cone extends outwards in parallel to form an annular support table, the tip of the flow guide cone is provided with an opening, and the opening is connected with a flow guide cylinder; the opening of the diversion cone of each stage of diversion silencing cone is gradually increased, and the diameter of the diversion cylinder is matched with the aperture of the opening of the diversion cone and is also gradually increased; the inner surfaces and the outer surfaces of the guide cone and the guide cylinder are respectively paved with sound insulation felts; the positioning support assembly comprises a plurality of support rods and a connecting ring, the support rods are arranged between the support tables of each stage of flow guide silencing cone, the lower ends of the support rods below the support table of the final stage of flow guide silencing cone are fixed with the upper end surface of the connecting ring, and the connecting ring is connected with the upper end surface of the connecting flange; the protective cover is of a cylindrical structure with an opening at the lower end, a plurality of vent holes are uniformly formed in the protective cover, the protective cover covers the multistage flow guide noise elimination cone, and the lower end of the protective cover is fixed with the upper end face of the connecting ring; the lower end of the connecting flange is used for being connected with an air inlet of the ventilator.
2. The gas muffling and guiding device for a mining local ventilator of claim 1, wherein: the multistage flow-guiding silencing cone adopts three stages and comprises a superior flow-guiding silencing cone, a middle flow-guiding silencing cone and a final flow-guiding silencing cone, a guide cylinder suspension of the superior flow-guiding silencing cone is positioned in the guide cone of the middle flow-guiding silencing cone, a guide cylinder suspension of the middle flow-guiding silencing cone is positioned in the guide cone of the final flow-guiding silencing cone, and the lower end of the guide cylinder of the final flow-guiding silencing cone is positioned above the connecting ring.
3. The gas muffling and guiding device for a mining local ventilator of claim 2, wherein: the upper-stage flow guide silencing cone, the middle-stage flow guide silencing cone and the final-stage flow guide silencing cone are all made of metal plates or are made of rubber or plastic through shaping.
4. The gas muffling and guiding device for a mining local ventilator of claim 3, wherein: the protective cover comprises a main cover cylinder, a transition ring and a connecting cylinder and is made of a porous plate; the top of the main cover cylinder is in butt welding with a supporting table of a higher-level flow guide noise elimination cone, and the inner side wall of the main cover cylinder is respectively welded and fixed with the outer edge of the supporting table of the third-level flow guide noise elimination cone; the lower edge of the main cover cylinder is welded with the outer circular ring of the transition ring, the inner circular ring of the transition ring is welded with the upper edge of the connection cylinder, and the lower edge of the connection cylinder is fixed with the upper end face of the connection ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020386802.1U CN211874826U (en) | 2020-03-24 | 2020-03-24 | Mining is for local fan gas elimination guiding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020386802.1U CN211874826U (en) | 2020-03-24 | 2020-03-24 | Mining is for local fan gas elimination guiding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211874826U true CN211874826U (en) | 2020-11-06 |
Family
ID=73257074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020386802.1U Active CN211874826U (en) | 2020-03-24 | 2020-03-24 | Mining is for local fan gas elimination guiding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211874826U (en) |
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2020
- 2020-03-24 CN CN202020386802.1U patent/CN211874826U/en active Active
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