CN104420942A - Muffler for mine pneumatic submersible pump - Google Patents
Muffler for mine pneumatic submersible pump Download PDFInfo
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- CN104420942A CN104420942A CN201310385632.XA CN201310385632A CN104420942A CN 104420942 A CN104420942 A CN 104420942A CN 201310385632 A CN201310385632 A CN 201310385632A CN 104420942 A CN104420942 A CN 104420942A
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- housing
- muffler
- silencing apparatus
- welded
- submersible pump
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Abstract
The invention provides a muffler for a mine pneumatic submersible pump. The muffler comprises a primary muffler and a secondary muffler which are welded. The primary muffler changes the direction of air flows flowing through an air inlet of the primary muffler for at least four times to attenuate energy, and the secondary muffler changes the direction of the air flows flowing out of the primary muffler for at least one time to attenuate energy. According to the muffler, the moving direction of air exhausted by a motor is changed for four times in the primary muffler, medium-and-low-frequency sound energy is attenuated, the air flows flow into the secondary muffler, the moving direction is changed for one time, and the air flows pass through a nylon net, accordingly, energy, in particular to high-frequency sound energy, is attenuated. By the two-stage energy attenuation, noise is reduced greatly, and a good attenuation effect is obtained; tests show that noise is between 60dB and 65dB (A) (sound power level), and effects on parameters such as the water pump lift, flow and the like are very small.
Description
Technical field
The present invention relates to mechanical field, particularly relate to a kind of mine pneumatic submersible pump silencing apparatus.
Background technique
Gear type mine pneumatic submersible pump is one of important tool of coal mine underground water drainage operation.It adopts hydraulic gear motor design, utilizes gear pressure reduction to produce power impeller and realizes drawing water, have structure simple, the advantages such as failure rate is low.But compared with blade type, turbo type submersible pump, its noise produced in running is larger.Accompanying drawing 1 is acoustic wave filter structure schematic diagram in prior art middle gear formula mine pneumatic submersible pump, as shown in Figure 1, this silencing apparatus comprises steel pipe (11), the interior welds of described steel pipe (11) is connected with the leachy connecting tube of band (12), the inside of steel pipe (11) is provided with foam body (11), one end of steel pipe (11) is connected with the ventilating cover (14) with air outlet hole, its the other end is welded to connect the suction port of connecting tube (12), airflow direction as can be seen from figure shown in arrow, after air-flow flows into from the suction port of connecting tube (12), steel pipe (11) is flowed out to inner by the pore on connecting tube (12), finally flow out from ventilating cover (14), air-flow is changed 2 times by its direction and its energy of effect of foam body (11) obtains decay, but its degradation of energy is inadequate, therefore its soundproof effect is poor, measurement result is in 110-120dB (A) (sound power level), beyond the standard of coal mine operation, thus, how to design and there is the excellent silencing apparatus of soundproof effect just seem particularly important, and the silencing apparatus contour structure size shown in Fig. 1 is larger, heavier-weight.
Summary of the invention
The object of the invention is to the defect solving the existence of above-mentioned prior art, provide a kind of structure simple, lightweight, the silencing apparatus that soundproof effect is good.
A kind of mine pneumatic submersible pump silencing apparatus, comprises the one-level silencing apparatus and secondary muffler that are threaded; Flowed energy decays at least 4 times by being changed by the airflow direction passing into its suction port by described one-level silencing apparatus, and flowed energy decays at least 1 time by being changed in the direction of the air-flow flowed out from one-level silencing apparatus by secondary muffler; Wherein,
The first body that described one-level silencing apparatus comprises the first housing and is partly arranged in the first housing; The second body that described secondary muffler comprises the second housing and is partly arranged in the second housing; One end that described first body protrudes the first housing is connected with the threaded one end that the second body protrudes the second housing; The other end of the first body is welded on by joint on the inwall of the first shell air inlet, and the air outlet of the first housing is welded to connect on the outer tube wall of the first body the other end; The other end part of the second body is welded on the inner wall of the second housing, makes to form some air holes between the inner wall of the second body and the second housing;
The inner chamber of the first housing is divided into an annular housing by the first body, and the first body is on its tube wall of part in described annular housing and is provided with some pores, and is welded with baffle plate on its longitudinal cross-section; The shell wall of the second housing is provided with some long strip pores.
Further, the internal diameter of described first shell air inlet is greater than the internal diameter of its air outlet.
Further, the reticulated for air-flow of decaying is filled with in described second housing.
Further, described first body is arranged on the center of the first housing, and the second body is arranged on the center of the second housing.
Further, on the second body, cover has nut, and cap compresses on the second housing by nut.
Further, described reticulated is nylon mesh.
Mine pneumatic submersible pump silencing apparatus provided by the invention, in one-level silencing apparatus, the air-flow that motor is discharged changes four moving direction, centering low frequency acoustic energy is decayed, enter secondary muffler again, air-flow changes again once transports merit direction, and by nylon mesh, make energy particularly high-frequency sound energy obtain decay.By two-stage degradation of energy, noise greatly reduces, and thus achieves good soundproof effect.After tested, its noise is 60-65dB (A) (sound power level), and very little to parameter influences such as water lift of pump, flows.
Accompanying drawing explanation
Fig. 1 is acoustic wave filter structure schematic diagram in prior art middle gear formula mine pneumatic submersible pump;
Fig. 2 is acoustic wave filter structure schematic diagram in gear type mine pneumatic submersible pump of the present invention.
Fig. 3 is that the A-A of Fig. 2 is to sectional view.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with the accompanying drawing in the present invention, the technological scheme in the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Fig. 2 is acoustic wave filter structure schematic diagram in gear type mine pneumatic submersible pump of the present invention, Fig. 3 is that the A-A of Fig. 2 is to sectional view, as shown in Figures 2 and 3, mine pneumatic submersible pump silencing apparatus provided by the invention, comprises the one-level silencing apparatus 11 and secondary muffler 12 that are welded to connect; , a kind of mine pneumatic submersible pump silencing apparatus, it is characterized in that, comprise the one-level silencing apparatus 11 and secondary muffler 12 that are threaded; Acoustic energy is decayed at least 4 times by being changed by the airflow direction passing into its suction port 21 by described one-level silencing apparatus 11, and acoustic energy is decayed at least 1 time by being changed in the direction of the air-flow flowed out from one-level silencing apparatus 11 by secondary muffler 12; Wherein, described one-level silencing apparatus 11 comprises the first housing 2 and part is arranged on the first body 4 in the first housing; The second body 5 that described secondary muffler 12 comprises the second housing 8 and is partly arranged in the second housing 8; One end that described first body 4 protrudes the first housing 2 is connected with the threaded one end that the second body 5 protrudes the second housing 8; The other end of the first body 4 is welded on by joint 1 on the inwall of the first housing 2 suction port 21, and the air outlet of the first housing 2 is welded to connect on the outer tube wall of first body 4 the other end; The other end part of the second body 5 is welded on the inner wall 81 of the second housing 8, makes to form some air holes 82 between the second body 5 and the inner wall 81 of the second housing 8;
The inner chamber of the first housing 2 is divided into an annular housing by the first body 4, and the first body 4 is on its tube wall of part in described annular housing and is provided with some pores 41, and is welded with baffle plate 3 on its longitudinal cross-section; The shell wall of the second housing 8 is provided with some long strip pores 83.
Particularly, one-level silencing apparatus 11 comprises the first housing 2, first body 4, baffle plate 3, joint 1, suction port 21 internal diameter of the first housing 2 is greater than its air outlet internal diameter, first body 4 part is placed in the first housing 2, particularly, the suction port end of the first body 4 is welded on by joint 1 on the inwall of suction port 21, the air outlet of the first housing 2 is welded on the outer tube wall of the first body 4 near its air outlet, first housing 2 is divided internally into an annular housing by the first body 4, its tube wall of the part of the first body 4 in this annular housing is provided with some pores 41, the centre of the first body 4 is welded with baffle plate 3 on its longitudinal cross-section, described secondary muffler 12 comprises the second housing 8, second body 5, reticulated 84, cap 7, nut 6, wherein, with reference to figure 3, one end that second body 5 welds with the inner wall 81 of the second housing 8 is provided with some bumps, this bump and inner wall 81 are welded to connect, so, make to form some air holes 82 between the second body 5 and the inner wall 81 of the second housing 8, the one side of the second housing 8 is the face of opening, after to populated reticulated 84 in the second housing 8, again cap 7 is covered and open on face at the second housing 8, then by nut 6, cap 7 is pressed on the second housing 8.Just be threaded with the second body 5 by the first body 4 between one-level silencing apparatus 11 with secondary muffler 12 and connect as one.
Mine pneumatic submersible pump silencing apparatus provided by the invention, with reference to the direction of arrow in Fig. 1, air-flow direction in one-level silencing apparatus 11 changes 4 times, change in secondary muffler 12 once, so, medium and low frequency acoustic energy has been carried out abundant decay by silencing apparatus, thus greatly reduces noise, makes soundproof effect of the present invention splendid.
Mine pneumatic submersible pump silencing apparatus provided by the invention, in one-level silencing apparatus, the air-flow that motor is discharged changes four moving direction, centering low frequency acoustic energy is decayed, enter secondary muffler again, air-flow changes again once transports merit direction, and by nylon mesh, make energy particularly high-frequency sound energy obtain decay.By two-stage degradation of energy, noise greatly reduces, and thus achieves good soundproof effect.After tested, its noise is 60-65dB (A) (sound power level), and very little to parameter influences such as water lift of pump, flows, and structure is simple, and lightweight, be worth promoting use.
Last it is noted that above embodiment is only in order to illustrate technological scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technological scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technological scheme.
Claims (6)
1. a mine pneumatic submersible pump silencing apparatus, is characterized in that, comprises the one-level silencing apparatus (11) and secondary muffler (12) that are threaded; Acoustic energy is decayed at least 4 times by being changed by the airflow direction passing into its suction port (21) by described one-level silencing apparatus (11), and acoustic energy is decayed at least 1 time by being changed in the direction of the air-flow flowed out from one-level silencing apparatus (11) by secondary muffler (12); Wherein,
The first body (4) that described one-level silencing apparatus (11) comprises the first housing (2) and is partly arranged in the first housing; The second body (5) that described secondary muffler (12) comprises the second housing (8) and is partly arranged in the second housing (8); One end that described first body (4) protrudes the first housing (2) is connected with the threaded one end that the second body (5) protrudes the second housing (8); The other end of the first body (4) is welded on the inwall of the first housing (2) suction port (21) by joint (1), and the air outlet of the first housing (2) is welded to connect on the outer tube wall of the first body (4) the other end; The other end part of the second body (5) is welded on the inner wall (81) of the second housing (8), makes to form some air holes (82) between the inner wall (81) of the second body (5) and the second housing (8);
The inner chamber of the first housing (2) is divided into an annular housing by the first body (4), first body (4) is on its tube wall of part in described annular housing and is provided with some pores (41), and on its longitudinal cross-section, be welded with baffle plate (3); The shell wall of the second housing (8) is provided with some long strip pores (83).
2. mine pneumatic submersible pump silencing apparatus according to claim 1, is characterized in that, the internal diameter of described first housing (2) suction port (21) is greater than the internal diameter of its air outlet.
3. mine pneumatic submersible pump silencing apparatus according to claim 1 and 2, is characterized in that, is filled with the reticulated (84) for air-flow of decaying in described second housing (8).
4. according to claim 3, it is characterized in that, described first body (4) is arranged on the center of the first housing (2), and the second body (5) is arranged on the center of the second housing (8).
5. according to claim 3, it is characterized in that, the upper cover of the second body (5) has nut (6), and cap (7) is pressed on the second housing (8) by nut (6).
6. according to claim 3, it is characterized in that, described reticulated (84) is nylon mesh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310385632.XA CN104420942A (en) | 2013-08-30 | 2013-08-30 | Muffler for mine pneumatic submersible pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310385632.XA CN104420942A (en) | 2013-08-30 | 2013-08-30 | Muffler for mine pneumatic submersible pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104420942A true CN104420942A (en) | 2015-03-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310385632.XA Pending CN104420942A (en) | 2013-08-30 | 2013-08-30 | Muffler for mine pneumatic submersible pump |
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| CN (1) | CN104420942A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2318406Y (en) * | 1997-10-10 | 1999-05-12 | 董秀斌 | Purification silencer |
| JP2000248921A (en) * | 1999-02-26 | 2000-09-12 | Shintaro Yamada | Purifying silencer |
| CN200961499Y (en) * | 2006-10-30 | 2007-10-17 | 常州风特安泵业有限公司 | Silencer |
| KR20100002892A (en) * | 2008-06-30 | 2010-01-07 | (주)한창산업 | Cassette type silencer |
| CN101871473A (en) * | 2010-06-09 | 2010-10-27 | 中国矿业大学 | Impedance composite muffler |
| FR2951495A1 (en) * | 2009-10-20 | 2011-04-22 | Faurecia Sys Echappement | Exhaust volume i.e. exhaust silencer, for reducing acoustic emissions from exhaust line of internal combustion engine of motor vehicle, has wall with porous material whose air passage resistance has specific Newton-second per cubic meter |
| CN102364103A (en) * | 2011-08-12 | 2012-02-29 | 王辉 | Silencer for wind-driven water pump |
| CN102817672A (en) * | 2012-09-12 | 2012-12-12 | 大连新飞船机有限公司 | Pneumatic motor silencing and dirt collecting device |
| CN202833191U (en) * | 2012-05-25 | 2013-03-27 | 常州莱安泵业科技有限公司 | Gear type wind drive immersible pump for mine |
-
2013
- 2013-08-30 CN CN201310385632.XA patent/CN104420942A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2318406Y (en) * | 1997-10-10 | 1999-05-12 | 董秀斌 | Purification silencer |
| JP2000248921A (en) * | 1999-02-26 | 2000-09-12 | Shintaro Yamada | Purifying silencer |
| CN200961499Y (en) * | 2006-10-30 | 2007-10-17 | 常州风特安泵业有限公司 | Silencer |
| KR20100002892A (en) * | 2008-06-30 | 2010-01-07 | (주)한창산업 | Cassette type silencer |
| FR2951495A1 (en) * | 2009-10-20 | 2011-04-22 | Faurecia Sys Echappement | Exhaust volume i.e. exhaust silencer, for reducing acoustic emissions from exhaust line of internal combustion engine of motor vehicle, has wall with porous material whose air passage resistance has specific Newton-second per cubic meter |
| CN101871473A (en) * | 2010-06-09 | 2010-10-27 | 中国矿业大学 | Impedance composite muffler |
| CN102364103A (en) * | 2011-08-12 | 2012-02-29 | 王辉 | Silencer for wind-driven water pump |
| CN202833191U (en) * | 2012-05-25 | 2013-03-27 | 常州莱安泵业科技有限公司 | Gear type wind drive immersible pump for mine |
| CN102817672A (en) * | 2012-09-12 | 2012-12-12 | 大连新飞船机有限公司 | Pneumatic motor silencing and dirt collecting device |
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| PB01 | Publication | ||
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Application publication date: 20150318 |