CN201547031U - Matched damping and unloading combined valve special for high-speed centrifugal fan - Google Patents
Matched damping and unloading combined valve special for high-speed centrifugal fan Download PDFInfo
- Publication number
- CN201547031U CN201547031U CN2009201783696U CN200920178369U CN201547031U CN 201547031 U CN201547031 U CN 201547031U CN 2009201783696 U CN2009201783696 U CN 2009201783696U CN 200920178369 U CN200920178369 U CN 200920178369U CN 201547031 U CN201547031 U CN 201547031U
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- plate
- perforated plate
- noise elimination
- valve
- valve body
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Abstract
The utility model relates to a matched damping and unloading combined valve special for high-speed centrifugal fan, which has a structure that a damping base and a perforated plate are fixed on the flange on one end of a valve body through fasteners, a valve rod is fixedly connected with a butterfly plate, a low-noise plate, a bearing core retainer plate and the perforated plate are welded sequentially into a whole, and a U-shaped cavity is formed between the low-noise plate, the bearing core retainer plate and the perforated plate; an outer sleeve is fixed on the damping base, sound-absorbing material is filled in the enclosed cavity formed between the outer sleeve and the perforated plate, a sealed lining is arranged in the valve body, and the butterfly plate and the sealed lining form a sealing pair. The utility model has simple, compact and reasonable structure, occupies small space, has low manufacturing cost, has high temperature and corrosion resistant and long-service-life sealed lining of the valve body, and has the simple and convenient changing sound-absorbing material.
Description
Technical field
The present invention relates to a kind of supporting special noise elimination air release assembled valve of high-speed centrifugal fan; specifically it is the mechanical device that is used for making blower fan outlet connection atmosphere on the sewage treatment project before the high-speed centrifugal fan startup or before shutting down and has noise elimination function; to guarantee the safety reliability of main frame, belong to the mechanical mechanism technical field.
Background technique
In prior art, the high-speed centrifugal fan on the sewage treatment project all needs supporting atmospheric valve, and effect is the safety reliability that guarantees fan starting or shutdown.Atmospheric valve is installed on the blower fan outlet port, and blower fan outlet and atmosphere are connected, and in order to reduce the aerodynamic noise that enters atmosphere, need fix a silencer in the atmospheric valve outlet port.The typical cartridge type dissipative muffler of many at present employings, this type of silencing apparatus takes up space greatly, and structure is complicated.Because the air temperature that blower fan is discharged is higher, the occasion high humidity has corrosion function to the sealing material of valve and the sound-absorbing material in the silencing apparatus, reduces working life, causes the sound-absorbing material of frequent replacing valve sealing ring and silencing apparatus, and maintenance work is extremely required great effort.
Summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, thereby a kind of supporting special noise elimination air release assembled valve of high-speed centrifugal fan is provided, it is low cost of manufacture not only, and maintenance is very convenient.
According to technological scheme provided by the invention, supporting special noise elimination air release assembled valve of high-speed centrifugal fan comprises valve body, butterfly plate, valve rod, perforated plate, noise elimination base, described noise elimination base is fixed on the flange of valve body one end by fastening piece together with perforated plate, valve rod is fixedlyed connected with butterfly plate, feature is: the low noise soundboard is integrally welded successively with supporting core retainer plate and perforated plate, forms a U-shaped cavity between described low noise plate and supporting core retainer plate and the perforated plate; Overcoat is fastened on the noise elimination base, and filling sound-absorbing material in the enclosed cavity that forms between overcoat and the perforated plate is provided with sealed liner in the valve body, and butterfly plate and sealed liner form sealing pair.
Described noise elimination base, overcoat, perforated plate are being provided with the through hole that several connect atmosphere near noise elimination base flange place, described through hole is connected with the U-shaped cavity simultaneously; Be provided with sealed liner in the valve body, butterfly plate and sealed liner form sealing pair, and described sealed liner is with high temperature resistant, and corrosion resistant fluorine rubber is made.
Compared with the prior art the present invention has the following advantages:
The present invention is simple, compact and reasonable for structure; Used space is little, low cost of manufacture; The sealed liner of valve body is high temperature resistant and corrosion-resistant, long service life; The replacing of sound-absorbing material is very simple and convenient.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
Embodiment during following the present invention incites somebody to action in conjunction with the accompanying drawings is further described:
As shown in Figure 1: the present invention includes valve body 1, sealed liner 2, butterfly plate 3, valve rod 4, supporting core retainer plate 5, low noise soundboard 6, perforated plate 7, noise elimination base 8, sound-absorbing material 9, overcoat 10 etc.
The present invention adopts low noise soundboard 6 integrally welded successively with supporting core retainer plate 5 and perforated plate 7, U-shaped cavity 11 of middle formation; Overcoat 10 is fastened on the noise elimination base 8, and forms enclosed cavity, filling sound-absorbing material 9 in the enclosed cavity with perforated plate 7; Flange place near noise elimination base 8 on described noise elimination base 8, overcoat 10 and the perforated plate 7 is provided with several holes 12, and U-shaped cavity 11 and atmosphere are connected; Be provided with sealed liner 2 (with high temperature resistant, corrosion resistant fluorine rubber is made) in the valve body 1, sealed liner 2 forms sealing pair with butterfly plate 3, and valve rod 4 is fixedlyed connected with butterfly plate 3; Described noise elimination base 8 together is fastened on an end (outlet end) flange of valve body together with perforated plate 7.
Working principle of the present invention and process are as follows:
As shown in Figure 1: when blower fan normally moves; the present invention is in closed condition (being shown position); each uses the gas point pipe fitting inputs such as the transition conduit of the pressure air that blower fan produces by the blower fan outlet port, safety check; the present invention is mounted on the transition conduit between blower fan outlet and the safety check; the present invention opens (being emptying) before blower fan is shut down or before starting, and effect is a safety reliability of guaranteeing blower fan (main frame).Keying of the present invention realizes by Electric actuator actuate valve stem 4, when valve rod 4 drives butterfly plate 3 by diagram arrow A direction half-twist, valve be opened (unlatching), this moment, the pressure air in blower fan outlet port entered in the valve cavity along the arrow B direction, and enter in the U-shaped cavity 11 along the arrow C direction by low noise soundboard 6, low noise soundboard 6 is provided with many special holes, the effect that can play decompression and eliminate the noise, this is " once eliminating the noise ", after the pressure air that process " is once eliminated the noise " enters U-shaped cavity 11, " the secondary noise elimination " formed by perforated plate 7 and sound-absorbing material 9 installed again, finally enter atmosphere, thereby realized the function of noise elimination emptying along arrow D direction.
The present invention on sewage treatment project with the supporting use of high-speed centrifugal fan high temperature resistant, corrosion-resistant because sealed liner used fluorine rubber, do not need frequent replacing, working life is very long; The secondary noise elimination structure that muffling part has adopted low noise soundboard and perforated plate, sound-absorbing material to form, the noise of discharging can reach environmental protection standard fully, and simple in structure, and it is very convenient to change sound-absorbing material.
Claims (3)
1. supporting special noise elimination air release assembled valve of high-speed centrifugal fan, comprise valve body (1), butterfly plate (3), valve rod (4), perforated plate (7), noise elimination base (8), described noise elimination base (8) even is fixed on the flange of valve body (1) one end with perforated plate (7) by fastening piece, valve rod (4) is fixedlyed connected with butterfly plate (3), it is characterized in that: adopt low noise soundboard (6) integrally welded successively, form a U-shaped cavity (11) between described low noise plate (6) and supporting core retainer plate (5) and the perforated plate (7) with supporting core retainer plate (5) and perforated plate (7); Overcoat (10) is fastened on the noise elimination base (8), and filling sound-absorbing material (9) in the enclosed cavity that forms between described overcoat (10) and the perforated plate (7) is provided with sealed liner (2) in the valve body (1), and butterfly plate (3) forms sealing pair with sealed liner (2).
2. supporting special noise elimination air release assembled valve of high-speed centrifugal fan according to claim 1, it is characterized in that being respectively equipped with on described noise elimination base (8), overcoat (10) and the perforated plate (7) through hole (12) that several connect atmosphere, described through hole (12) is connected with U-shaped cavity (11).
3. supporting special noise elimination air release assembled valve of high-speed centrifugal fan according to claim 1 is characterized in that described sealed liner (2) with high temperature resistant, and corrosion resistant fluorine rubber is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201783696U CN201547031U (en) | 2009-11-20 | 2009-11-20 | Matched damping and unloading combined valve special for high-speed centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201783696U CN201547031U (en) | 2009-11-20 | 2009-11-20 | Matched damping and unloading combined valve special for high-speed centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201547031U true CN201547031U (en) | 2010-08-11 |
Family
ID=42602203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201783696U Expired - Lifetime CN201547031U (en) | 2009-11-20 | 2009-11-20 | Matched damping and unloading combined valve special for high-speed centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201547031U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101725575B (en) * | 2009-11-20 | 2011-06-01 | 无锡杰尔压缩机有限公司 | Special mulffling-emptying assembled valve of high-speed centrifugal fan |
-
2009
- 2009-11-20 CN CN2009201783696U patent/CN201547031U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101725575B (en) * | 2009-11-20 | 2011-06-01 | 无锡杰尔压缩机有限公司 | Special mulffling-emptying assembled valve of high-speed centrifugal fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100811 Effective date of abandoning: 20091120 |