CN203797131U - Silencer for hand-operated direction valve - Google Patents
Silencer for hand-operated direction valve Download PDFInfo
- Publication number
- CN203797131U CN203797131U CN201420092690.3U CN201420092690U CN203797131U CN 203797131 U CN203797131 U CN 203797131U CN 201420092690 U CN201420092690 U CN 201420092690U CN 203797131 U CN203797131 U CN 203797131U
- Authority
- CN
- China
- Prior art keywords
- left end
- end wall
- direction valve
- hand
- length
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Exhaust Silencers (AREA)
- Details Of Valves (AREA)
Abstract
The utility model discloses a silencer for a hand-operated direction valve. The silencer comprises a closed casing, wherein the closed casing is defined by the left end wall, the right end wall and cylindrical lateral walls, an inner pipe with the length smaller than that of each cylindrical lateral wall is arranged in the closed casing in a sleeving mode, the left end of the inner pipe is fixedly connected with the inner surface of the left end wall, an annular groove defined by the cylindrical lateral walls, the left end wall and the inner pipe are filled with a sound absorption material, the length of the sound absorption material is about half of the length of the inner pipe, and an inner pipe supporting rod is arranged in the middle of the annular groove positioned in the right side of the sound absorption material. An air inlet formed in the center of the left end wall extends outwards to form an air inlet pipe, and an air outlet hole is formed in the center of the right end wall. The silencer for the hand-operated direction valve has the advantages of being simple in structure, convenient to use and capable of eliminating high-frequency, middle-frequency and low-frequency noises, being used under high-temperature, high-humidity and high-airflow environments and effectively reducing noises generated by airflows during pulling of the direction valve, therefore, work environments are improved greatly, and noise pollution is reduced.
Description
Technical field
The utility model relates to baffler field, especially relates to a kind of hand-operated direction valve baffler.
Background technique
Baffler is a kind of device that acoustic energy is outwards propagated that can effectively stop or weaken again when allowing air-flow to pass through, and it is mainly used in the noise control of inlet and outlet pipeline or the ventilation duct of machinery.A silencing apparatus that performance is good, can make pneumatic noise reduce 20-40dB(A).
The kind of silencing apparatus has a lot, mainly contains following three kinds: dissipative muffler, reactive muffler, complex muffler by its principle of noise reduction.Resistive silencing apparatus is to absorb acoustic energy by sound-absorbing material to reduce noise, and general micropunch plate muffler just belongs to this type, multiplexly eliminates high, mid-frequency noise.But due to reasons in structure, inapplicable the in the situation that of high temperature, high humidity, high speed.Dissipative muffler is that sound-absorbing material is fixed on to air-flow path inwall or in pipeline, lines up in a certain way, forms resistance noise reduction.Reactive muffler is that the size by controlling acoustic reactance is eliminated the noise, different from dissipative muffler, it does not use sound-absorbing material but the pipeline section or the side that connect sectional area sudden change on pipeline connects resonant cavity, utilize the change of acoustic impedance, the phenomenons such as launch at the interface that the sound wave of some frequency is suddenlyd change in acoustic impedance, interference, thus reach noise elimination object.
At present colliery is at the scene when operation, and when workman controls bumper and goat's horn lock by hand-operated direction valve, the air-flow that selector valve is discharged can send larger noise, forms noise pollution.Because the working environment under coal mine has high temperature, high humidity and high gas flow, so existing baffler is not adapted at using on hand-operated direction valve.
Summary of the invention
The utility model object is to provide the hand-operated direction valve baffler of a kind of simple in structure, applicable down-hole particular surroundings.
For achieving the above object, the utility model can be taked following technical proposals:
Hand-operated direction valve baffler described in the utility model, comprise baffler body, described baffler body comprises the enclosing housing being surrounded by left and right end wall and cylinder side wall, in described enclosing housing inner chamber, cover is placed with the inner tube that length is less than described cylinder side wall, the left end of described inner tube is connected in described left end wall inner surface, in the circular groove being surrounded by cylinder side wall, left end wall and inner tube, be filled with sound-absorbing material, the length of described sound-absorbing material is about 1/2 of interior length of tube, is provided with inner tube strut at the circular groove middle part on sound-absorbing material right side; The suction port place offering in described left end wall central position stretches out and is provided with suction tude, offers air outlet hole in described right-hand member wall central position.
The internal diameter of described suction tude is less than the aperture of described air outlet hole.
The utility model advantage is reasonable in design, simple in structure, and processing is quick, easy to use; Combine the advantage of dissipative muffler and reactive muffler, both can eliminate the noise of high, medium and low frequency, can also under the environment of high temperature, high humidity, high gas flow, use, can effectively reduce selector valve and pull the noise that in process, air-flow produces, greatly improve working environment, reduced noise pollution.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
As shown in Figure 1, hand-operated direction valve baffler described in the utility model, comprise by left end wall 1, the enclosing housing that right-hand member wall 2 and cylinder side wall 3 surround, in enclosing housing inner chamber, cover is placed with the inner tube 4 that length is less than cylinder side wall, the left end of inner tube 4 is connected on left end wall 1 internal surface, by cylinder side wall 3, in the circular groove that left end wall 1 and inner tube 4 surround, be filled with sound-absorbing material 5, the length of sound-absorbing material 5 is about 1/2 of inner tube 4 length, circular groove middle part on sound-absorbing material 5 right sides is provided with inner tube strut 6, now in the enclosing housing of baffler, form successively from left to right sound absorption chamber, resonant cavity and expansion cavity, the suction port place offering in left end wall 1 central position stretches out and is provided with suction tude 7, offers air outlet hole 8 in right-hand member wall 2 central positions, and the internal diameter of suction tude 7 is less than the aperture of air outlet hole 8.
When actual manufacture, the diameter of enclosing housing is 100mm, and length is 350mm; The internal diameter of suction tude 7 is 5mm, and length is 30mm, and the aperture of air outlet hole 8 is 12mm.
When use, the utility model is fixed on to hand-operated direction valve below, the exhaust tube of selector valve is connected with suction tude 7 by gas rope.
When work, operator pulls selector valve handgrip, and the air-flow of discharge enters in enclosing housing from suction tude 7, through sound absorption chamber, resonant cavity, expansion cavity, then discharges from air outlet hole 8, and noise is eliminated substantially, has greatly improved working environment.
Claims (2)
1. a hand-operated direction valve baffler, comprise baffler body, it is characterized in that: described baffler body comprises by a left side, right-hand member wall (1, 2) and the enclosing housing that surrounds of cylinder side wall (3), in described enclosing housing inner chamber, cover is placed with the inner tube (4) that length is less than described cylinder side wall, the left end of described inner tube (4) is connected on described left end wall (1) internal surface, by cylinder side wall (3), in the circular groove that left end wall (1) and inner tube (4) surround, be filled with sound-absorbing material (5), the length of described sound-absorbing material (5) is about 1/2 of inner tube (4) length, circular groove middle part on sound-absorbing material (5) right side is provided with inner tube strut (6), the suction port place offering in described left end wall (1) central position stretches out and is provided with suction tude (7), offers air outlet hole (8) in described right-hand member wall (2) central position.
2. hand-operated direction valve baffler according to claim 1, is characterized in that: the internal diameter of described suction tude (7) is less than the aperture of described air outlet hole (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420092690.3U CN203797131U (en) | 2014-03-03 | 2014-03-03 | Silencer for hand-operated direction valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420092690.3U CN203797131U (en) | 2014-03-03 | 2014-03-03 | Silencer for hand-operated direction valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203797131U true CN203797131U (en) | 2014-08-27 |
Family
ID=51379341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420092690.3U Expired - Fee Related CN203797131U (en) | 2014-03-03 | 2014-03-03 | Silencer for hand-operated direction valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203797131U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107166822A (en) * | 2017-07-06 | 2017-09-15 | 中国计量大学 | The adjusting method of air conditioner electronic expansion valve noise |
| CN108131491A (en) * | 2018-02-02 | 2018-06-08 | 上海开能环保设备股份有限公司 | Waste water proportional valve component |
| CN110578849A (en) * | 2019-08-15 | 2019-12-17 | 上海汇海真空机械设备有限公司 | Silencer for integrated nitrogen making machine |
-
2014
- 2014-03-03 CN CN201420092690.3U patent/CN203797131U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107166822A (en) * | 2017-07-06 | 2017-09-15 | 中国计量大学 | The adjusting method of air conditioner electronic expansion valve noise |
| CN108131491A (en) * | 2018-02-02 | 2018-06-08 | 上海开能环保设备股份有限公司 | Waste water proportional valve component |
| CN110578849A (en) * | 2019-08-15 | 2019-12-17 | 上海汇海真空机械设备有限公司 | Silencer for integrated nitrogen making machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140827 Termination date: 20150303 |
|
| EXPY | Termination of patent right or utility model |