CN201266147Y - Noise reducer for gas sampling pump and gas sampling instrument equipped with the same - Google Patents
Noise reducer for gas sampling pump and gas sampling instrument equipped with the same Download PDFInfo
- Publication number
- CN201266147Y CN201266147Y CNU2008201728942U CN200820172894U CN201266147Y CN 201266147 Y CN201266147 Y CN 201266147Y CN U2008201728942 U CNU2008201728942 U CN U2008201728942U CN 200820172894 U CN200820172894 U CN 200820172894U CN 201266147 Y CN201266147 Y CN 201266147Y
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- expansion chambers
- sound suppressor
- gas
- gas sampling
- utility
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Abstract
The utility model provides a muffler of a gas sampling pump and a gas sampling instrument provided with the muffler, and can solve the problems existing in the prior art that the pressure loss and flow capacity loss are larger, the electric power consumption is great, and the like. The utility model adopts the technical scheme that the muffler comprises a plurality of expansion chambers consisting of primary expansion chambers and last-stage expansion chambers, wherein a gas inlet pipe is arranged on each primary expansion chamber, a gas outlet pipe is arranged on each last-stage expansion chamber; a partition wall is arranged between two adjacent expansion chambers, and the two adjacent expansion chambers are communicated through an insert tube. The utility model utilizes at least double-stage gas-capacity expansion and contraction to cause sound reflection and interference so as to achieve the purposes of great noise elimination quantity, little pressure loss and capability of current and voltage regulation.
Description
Technical field
The utility model relates to the gas sampling field, relates in particular to a kind of gas sample pump air-capacitor expansion chambers sound suppressor.
Background technology
Departments such as environmental protection tests adopt the gas sampling instrument that atmosphere or flue dust are detected usually.In the gas sampling instrument, usually all be provided with sampling pump, and sampling pump generally all is provided with sound suppressor, sound suppressor in the existing gas sampling instrument adopts micropore jet sound suppressor or throttling step-down orifice plate sound suppressor, these two kinds of sound suppressors exist following deficiency: 1, owing to eliminate the noise by aperture, thereby the pressure loss and flow loss are all bigger.2, because the pressure loss and flow loss are bigger, and the sampling pump power of configuration is corresponding bigger, causes power consumption big, power consumption is big.3, complex structure, volume is big, manufacturing process trouble, cost height.
The utility model content
Problems such as the utility model provides a kind of sound suppressor of gas sample pump and the gas sampling instrument of this sound suppressor is installed, and the pressure loss and flow loss that it can solve the prior art existence are bigger, and power consumption is big.
In order to solve the problems of the technologies described above, the technical solution of the utility model is, a kind of sound suppressor of gas sample pump, it is characterized in that described sound suppressor comprises a plurality of expansion chambers of being made up of elementary and final stage at least, elementary expansion chambers is provided with draft tube, the final stage expansion chambers is provided with escape pipe, has the next door between the adjacent expansion chambers, is communicated with by tubular stinger between the adjacent expansion chambers.
In the technical solution of the utility model, also have following additional technical feature:
Described expansion chambers is cup-shaped, and the inside diameter D scope of described expansion chambers inner chamber is 30～120mm, and described expansion chambers inner chamber length L scope is 15～100mm, described draft tube inner diameter d
1Scope is 2.5～14mm.
Described tubular stinger internal diameter Φ scope is 2～15mm, described escape pipe inner diameter d
2Scope is 2.5～14mm.
Described tubular stinger is arranged near the expansion chambers bottom.
When described expansion chambers was two, described draft tube, described escape pipe, described next door and described tubular stinger were integral type, and formed faying face, and the cup-shaped housing parts of described expansion chambers forms by bonding agent is bonding by its end face and described faying face.
The utility model compared with prior art has the following advantages and good effect:
1, the utility model through the expansion of twin-stage air-capacitor at least, shrink and cause that acoustic reflection and interference have reached that sound deadening capacity is big, the pressure loss is little, and can current stabilization, the purpose of voltage stabilizing.
2, simple in structure, cost is low, be easy to make.
3, because the pressure loss and flow loss reduce, power consumption descends thereupon, has saved operating cost.
Description of drawings
Below in conjunction with drawings and Examples the utility model is described in detail.
Fig. 1 is the structural representation of an embodiment of a kind of gas sample pump of the utility model air-capacitor expansion chambers sound suppressor;
1, expansion chambers; 1-1, cup-shaped shell; 1-2, end face; 2, draft tube; 3, escape pipe; 4, expansion chambers; 4-1, cup-shaped shell; 4-2, end face; 5, tubular stinger; 6, faying face; 7, next door; d
1, the draft tube internal diameter; d
2, the escape pipe internal diameter; Φ, tubular stinger internal diameter; The internal diameter of D, expansion chambers inner chamber; Cavity length in L, the expansion chambers.
Embodiment
Embodiment
Referring to Fig. 1, present embodiment is a double-outspreading cell structure form.Described draft tube 2, described escape pipe 3, described next door 7 and described tubular stinger 5 are integral type, and form faying face 6, and above-mentioned parts are that plastic material is made by injection moulding.
Cup-shaped shell 1-1, the 4-1 part of described expansion chambers 1,4 forms by bonding agent is bonding by its end face 1-2,4-2 and described faying face 6, forms sound suppressor.Cup-shaped shell 1-1, the 4-1 of described expansion chambers 1,4 partly are similarly plastics and make.
Described draft tube 2 inner diameter d
1Be 4.5mm, described escape pipe 3 inner diameter d
2Be similarly 4.5mm.The inside diameter D of described expansion chambers 1,4 inner chambers is 44mm, and described expansion chambers 1,4 inner chamber length L are 60mm.The internal diameter Φ of described tubular stinger 5 is 9mm.
When the sample gas of sampling pump enters draft tube 2 and air-capacitor expansion chambers 1, because the relation of draft tube 2 internal diameters and expansion chambers 1 volume, expand by certain divergence ratio, sample gas is communicated with tubular stinger 5 through air-capacitor expansion chambers 1 again shrinks, described tubular stinger 5 is communicated with air-capacitor expansion chambers 4, expands by certain divergence ratio; Described air-capacitor expansion chambers 4 is communicated with escape pipe 3 shrinks, and causes that through the expansion of binodal air-capacitor, contraction acoustic reflection and interference have reached the effect of abating noises.
Expansion chambers can be designed as more than the secondary as required, as 4 grades.
Sound suppressor of the present utility model is applied in the gas sampling instrument, to reduce the gas noise of gas sample pump.
Above disclosed only is a kind of preferred embodiment of the utility model, can not limit the interest field of the utility model certainly with this, and therefore the equivalent variations of being done according to the utility model claim still belongs to the scope that the utility model is contained.
Claims (6)
1, a kind of sound suppressor of gas sample pump, it is characterized in that described sound suppressor comprises a plurality of expansion chambers of being made up of elementary and final stage at least, elementary expansion chambers is provided with draft tube, the final stage expansion chambers is provided with escape pipe, have the next door between the adjacent expansion chambers, be communicated with by tubular stinger between the adjacent expansion chambers.
2, the sound suppressor of a kind of gas sample pump according to claim 1 is characterized in that described expansion chambers is cup-shaped, and the inside diameter D scope of described expansion chambers inner chamber is 30～120mm, and described expansion chambers inner chamber length L scope is 15～100mm, described draft tube inner diameter d
1Scope is 2.5～14mm.
3, the sound suppressor of a kind of gas sample pump according to claim 2 is characterized in that described tubular stinger internal diameter Φ scope is 2～15mm, described escape pipe inner diameter d
2Scope is 2.5～14mm.
4, the sound suppressor of a kind of gas sample pump according to claim 3 is characterized in that described tubular stinger is arranged near the expansion chambers bottom.
5, according to the sound suppressor of any described a kind of gas sample pump of claim in the claim 1 to 4, when it is characterized in that described expansion chambers is two, described draft tube, described escape pipe, described next door and described tubular stinger are integral type, and the formation faying face, the cup-shaped housing parts of described expansion chambers forms by bonding agent is bonding by its end face and described faying face.
6, a kind of gas sampling instrument is characterized in that being equipped with the sound suppressor of the described a kind of gas sample pump of above-mentioned any top claim.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201728942U CN201266147Y (en) | 2008-10-10 | 2008-10-10 | Noise reducer for gas sampling pump and gas sampling instrument equipped with the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201728942U CN201266147Y (en) | 2008-10-10 | 2008-10-10 | Noise reducer for gas sampling pump and gas sampling instrument equipped with the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201266147Y true CN201266147Y (en) | 2009-07-01 |
Family
ID=40832521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201728942U Expired - Lifetime CN201266147Y (en) | 2008-10-10 | 2008-10-10 | Noise reducer for gas sampling pump and gas sampling instrument equipped with the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201266147Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562600A (en) * | 2010-12-22 | 2012-07-11 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor silencing device and compressor with same |
| CN106150987A (en) * | 2015-04-07 | 2016-11-23 | 厦门科际精密器材有限公司 | Micro air pump |
| CN107100820A (en) * | 2017-03-23 | 2017-08-29 | 青岛万宝压缩机有限公司 | Compressor for refrigeration air suction silencer |
| CN109708931A (en) * | 2019-01-30 | 2019-05-03 | 杭州富集生物科技有限公司 | A kind of portable aerosol Acquisition Instrument that can reduce noise |
-
2008
- 2008-10-10 CN CNU2008201728942U patent/CN201266147Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562600A (en) * | 2010-12-22 | 2012-07-11 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor silencing device and compressor with same |
| CN102562600B (en) * | 2010-12-22 | 2015-03-11 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor silencing device and compressor with same |
| CN106150987A (en) * | 2015-04-07 | 2016-11-23 | 厦门科际精密器材有限公司 | Micro air pump |
| CN107100820A (en) * | 2017-03-23 | 2017-08-29 | 青岛万宝压缩机有限公司 | Compressor for refrigeration air suction silencer |
| CN109708931A (en) * | 2019-01-30 | 2019-05-03 | 杭州富集生物科技有限公司 | A kind of portable aerosol Acquisition Instrument that can reduce noise |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090701 |
|
| CX01 | Expiry of patent term |