CN105056592B - Pressure filter back-blowing pressure release silencing apparatus - Google Patents
Pressure filter back-blowing pressure release silencing apparatus Download PDFInfo
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- CN105056592B CN105056592B CN201510425845.XA CN201510425845A CN105056592B CN 105056592 B CN105056592 B CN 105056592B CN 201510425845 A CN201510425845 A CN 201510425845A CN 105056592 B CN105056592 B CN 105056592B
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Abstract
nullThe present invention relates to pressure filter back-blowing pressure release silencing apparatus，Effectively solve noise pollution，Pressure filter ore pulp runs and emits，Enter acoustic filter，Soundproof effect is poor，The problem that service life is short，The top of release case is that side is low，High stepped of opposite side，Pressure filter back-blowing pressure release pipe is placed in above the side that release upper box part is low，Acoustic filter is placed in above release upper box part height side，Equipped with magnetic flap level gauge on the lateral wall of release case，Release bottom, case lateral wall below magnetic flap level gauge equipped with magnetic flap level gauge at the discharge nozzle of homonymy，Electric check valve is had on discharge nozzle，Magnetic flap level gauge is respectively and electric check valve、Computer connects，Present configuration is simple，Gases at high pressure are eliminated the noise through five dilatations，Soundproof effect is notable，And avoid back-blowing pressure release the emitted ore pulp of pipe and enter acoustic filter，The working environment and the pressure filter ore pulp that improve operator run the problem emitted，It it is the innovation on pressure filter back-blowing pressure release silencing apparatus.
Description
Technical field
The present invention relates to benficiation machinery field, particularly a kind of pressure filter back-blowing pressure release silencing apparatus.
Background technology
Diaphragm filter press has rational in infrastructure, simple to operate, easy to maintenance, squeeze pressure high, is effective equipment of subparticle dehydration, it is possible to realize the fast dewatering of superfine material.After filter cake is formed, being passed through high pressure back-blowing in pressure filter, to realize the further dehydration of material, after having squeezed, high-pressure blast puts into air from pressure filter back-blowing pressure release pipe.In actual production process, often there is following two subject matter in the release of pressure filter back-blowing pressure, one is that high flow rate gas is about the pressure filter back-blowing pressure release pipe ejection of 60mm from diameter, produce huge noise, it is main noise pollution source, filter pressing workshop, has a strong impact on the physical and mental health of operator；Two is breakage often occur due to filter press filter board, and when causing feeding, ore pulp is emerged from back-blowing pressure release pipe through filter plate, and the overflow time is long, and cleaning is wasted time and energy.For solving noise problem, installing acoustic filter at the pressure filter back-blowing pressure release mouth of pipe, but overflow phenomenon often occur during back-blowing pressure release pipe material on a filter press, the ore pulp emerged is frequently occluded acoustic filter, causes acoustic filter soundproof effect poor, and service life is short.Therefore, the high flow rate gas how to spray pressure filter blowback pressure release pipe is eliminated the noise, and avoids again the ore pulp emerged to enter acoustic filter simultaneously, is the key solving pressure filter back-blowing pressure release And Spread of Solute.
Summary of the invention
For above-mentioned situation, for overcoming prior art defect, the purpose of the present invention is just to provide a kind of pressure filter back-blowing pressure release silencing apparatus, can effectively solve noise pollution, pressure filter ore pulp runs and emits, and enters acoustic filter, cause acoustic filter soundproof effect poor, the problem that service life is short.
The technical scheme that the present invention solves is, including pressure filter back-blowing pressure release pipe, release case, magnetic flap level gauge, computer and electric check valve, the top of release case is that side is low, high stepped of opposite side, pressure filter back-blowing pressure release pipe is placed in above the side that release upper box part is low, acoustic filter is placed in above release upper box part height side, equipped with magnetic flap level gauge on the lateral wall of release case, release bottom, case lateral wall below magnetic flap level gauge equipped with magnetic flap level gauge at the discharge nozzle of homonymy, electric check valve is had on discharge nozzle, magnetic flap level gauge is respectively and electric check valve, computer connects.
Present configuration is simple, gases at high pressure are eliminated the noise through five dilatations, soundproof effect is notable, and avoid back-blowing pressure release the emitted ore pulp of pipe and enter acoustic filter, the working environment and the pressure filter ore pulp that improve operator run the problem emitted, and are the innovations on pressure filter back-blowing pressure release silencing apparatus.
Accompanying drawing explanation
Fig. 1 is the structural front view of the present invention.
Fig. 2 is the structure top view of the present invention.
Fig. 3 is the structural front view of acoustic filter of the present invention.
Fig. 4 is that the A-A of Fig. 3 of the present invention is to profile.
Fig. 5 is that the B-B of Fig. 3 of the present invention is to profile.
Detailed description of the invention
Below in conjunction with accompanying drawing, the detailed description of the invention of the present invention is elaborated.
Be given by Fig. 1-Fig. 5, the present invention includes pressure filter back-blowing pressure release pipe, release case, magnetic flap level gauge, computer and electric check valve, the top of release case 2 is that side is low, high stepped of opposite side, pressure filter back-blowing pressure release pipe 1 is placed in above the side that release case 2 top is low, acoustic filter 6 is placed in above release height side, case 2 top, equipped with magnetic flap level gauge 3 on the lateral wall of release case 2, release bottom, case 2 lateral wall below magnetic flap level gauge equipped with magnetic flap level gauge at the discharge nozzle of homonymy, electric check valve 5 is had on discharge nozzle, magnetic flap level gauge 3 respectively with electric check valve 5, computer 4 connects.
Described magnetic flap level gauge 3 is HC-UHZ type band teletransmission magnetic flap level gauge (Changzhou Nuan Qisheng finite instrument company produce).
Described pressure filter back-blowing pressure release pipe 1 has 1-6, is distributed on above the side that release case 2 top is low.
The internal diameter of described pressure filter back-blowing pressure release pipe 1 is 50-80mm, and lower end puts in 100-200mm in release case, and the pressure filter back-blowing pressure release pipe lower end sidewall in release case has the pore of diameter 20-30mm.
Described pore has 6-10.
Described release case 2 is the cube of bottom angled, and bottom is 10-20 ° with the angle of horizontal plane, and discharge nozzle is placed in the lower sidewall of release relatively low one end, bottom portion.
The long 2000mm, wide 2000mm, a height of 2000mm in side, a height of 2600-3000mm of opposite side of described release case.
The upper limit level of described magnetic flap level gauge 3 is 2000-2200mm, bottom limit level is 200mm, and magnetic flap level gauge 3 is connected with electric check valve 5, constitutes release case 2 automatic Control Systems of Liquids Height, magnetic flap level gauge is connected with computer 4, constitutes long distance control system.
Described acoustic filter 6 has 1-6.
nullDescribed acoustic filter 6 includes housing、Blast pipe、Expanding chamber、Restricting orifice、Sound-absorbing material、Throttle pipe and rainhat，In housing under have the first expanding chamber 12 the most successively、Second expanding chamber 13、3rd expanding chamber 14 and the 4th expanding chamber 15，Sound-absorbing material 1 it is filled with in each expanding chamber，Constitute the first sound absorbing layer，Rainhat 19 is arranged at the top of housing，Blast pipe 7 is arranged at bottom，The lower end of blast pipe 7 is connected with release case 2，The upper end of blast pipe 7 is connected with the first expanding chamber 12，First expanding chamber 12 is connected with the 4th expanding chamber 15 through first segment flow tube 8，Second expanding chamber 13 is connected with the 4th expanding chamber 15 through second section flow tube 9，Second expanding chamber 13 is connected with the 3rd expanding chamber 14 through the 3rd throttle pipe 10，3rd expanding chamber 14 air outside the 4th throttle pipe 11 is with housing communicates，The second sound absorbing layer of sound-absorbing material 2 18 tiling being placed in respective expanding chamber is had with each expanding chamber outside the mouth of pipe that each throttle pipe is connected，First throttle orifice plate (16) is had bottom the first sound absorbing layer between first sound absorbing layer and the second sound absorbing layer and in the first expanding chamber (12).
The second described sound absorbing layer is by the second sound absorbing layer A, second sound absorbing layer B, second sound absorbing layer C, second sound absorbing layer D and the second sound absorbing layer E is constituted, the the second sound absorbing layer A being placed in the first expanding chamber internal upper part is had outside the lower nozzle of first segment flow tube 8, have outside the upper orifice of first segment flow tube 8 and the upper orifice of second section flow tube 9 and be placed in the second sound absorbing layer B of bottom in the 4th expanding chamber 15, have, outside the lower nozzle of second section flow tube 9 and the lower nozzle of the 3rd throttle pipe 10, the second sound absorbing layer C being placed in the second expanding chamber 13 internal upper part, have outside the upper orifice of the 3rd throttle pipe 10 and be placed in the second sound absorbing layer D of bottom in the 3rd expanding chamber 14, the the second sound absorbing layer E being placed in the 3rd expanding chamber 14 internal upper part is had outside the lower nozzle of the 4th throttle pipe 11.
Described housing is the steel plate that 5mm is thick.
First described expanding chamber the 12, second expanding chamber the 13, the 3rd expanding chamber 14 is identical with the size of the 4th expanding chamber 15, and internal diameter is 400mm, is highly 300mm.
Described restricting orifice 16 is the steel plate that 3mm is thick, and percent opening is 20%-30%, and aperture is 10-15mm.
Described sound-absorbing material 1 is haydite or stone, and particle diameter is 10-30mm.
Described sound-absorbing material 2 18 is Cotton Gossypii, sponge or acoustical cotton.
The internal diameter of described blast pipe 7 is 200mm, a length of 150mm；The internal diameter of first segment flow tube 8, second section flow tube the 9, the 3rd throttle pipe 10 and the 4th throttle pipe 11 is 32mm, a length of 650mm of first segment flow tube 8, a length of 350mm of second section flow tube 9, the 3rd a length of 80mm of throttle pipe 10, the 4th a length of 400mm of throttle pipe 11.
The operation principle of the present invention is:
Ore pulp discharges: when pressure filter feeding, if filter plate has breakage, pressure filter back-blowing pressure release pipe 1 then can emit ore pulp, during now ore pulp flows into release case 2, when in release case 2, liquid level reaches upper limit 2000mm, magnetic flap level gauge 3 sends the signal of telecommunication, control electric check valve 5 to open, liquid level in release case 2 declines, when liquid level drops to lower limit 200mm, magnetic flap level gauge 3 controls electric check valve 5 and closes, member-retaining portion ore pulp in release case 2, can reduce high flow rate gas to the impact wear bottom it；Meanwhile, Monitoring Data transmission to computer 4, is implemented remotely monitoring by magnetic flap level gauge 3.
Gases at high pressure are eliminated the noise: when pressure filter release back-blowing pressure, gases at high pressure spray into release case 2 from multiple pores of pressure filter back-blowing pressure release pipe 1, eliminate the noise for first time dilatation；Gas is entered the first expanding chamber 12 by discharging case 2 by the blast pipe 7 of acoustic filter, the gas of the first expanding chamber 12 enters the 4th expanding chamber 15 through first segment flow tube 8, eliminate the noise for second time dilatation, the gas of the 4th expanding chamber 15 enters the second expanding chamber 13 through second section flow tube 9, eliminate the noise for third time dilatation, the gas of the second expanding chamber 13 enters the 3rd expanding chamber 14 through the 3rd throttle pipe 10, it is that the 4th dilatation is eliminated the noise, the gas of the 3rd expanding chamber 14 enters air through the 4th throttle pipe 11, is that the 5th dilatation is eliminated the noise；Restricting orifice 16 in each of the above expanding chamber not only acts as compartmentation, also has throttling noise elimination effect simultaneously, and haydite 17 and the acoustical cotton 18 filled in expanding chamber have sound absorption sound deadening；The gases at high pressure of pressure filter back-blowing enter air after five dilatations are eliminated the noise.
During cleaning: when pressure filter maintenance down, opening electric check valve 5, use water under high pressure, opposite direction sprays into from the mouth of pipe of the 4th throttle pipe 11 of acoustic filter 6 and is rinsed, and closes electric check valve 5 after rinsing, and cleaning is convenient.
Certainly; described above is not limitation of the present invention; the present invention is also not limited to above-mentioned detailed description of the invention, equivalence or equivalent variations that those skilled in the art are made in the essential scope of the present invention, retrofits, adds or replaces, and falls within protection scope of the present invention.
Advantages of the present invention:
(1) ore pulp separates discharge with high flow rate gas
Directly it is connected with acoustic filter compared to pressure filter back-blowing pressure release pipe, ore pulp is separated discharge with high flow rate gas by release case by the present invention, the ore pulp that pressure filter back-blowing pressure release bank of tubes is put is discharged from release bottom portion, high flow rate gas is discharged from the acoustic filter of release upper box part, easy to use, effective；
(2) soundproof effect is notable, and acoustic filter is long for service life；
As long as the microperforated panel acoustic filter of existing employing enters ore pulp, will cause blockage of the micro orifice, soundproof effect is remarkably decreased, and uses and 1-2 week the most no longer has noise elimination effect；Present invention, avoiding ore pulp and enter acoustic filter, and there is not blockage problem in the restricting orifice of the present invention and throttle pipe, soundproof effect meets National Industrial enterprise noise sanitary standard, acoustic filter service life is the 4-6 month, when being directly connected with acoustic filter than pressure filter back-blowing pressure release pipe, the service life of acoustic filter at least improves 3 months, and cleaning can be recycled after changing sound-absorbing material, reduces cost and reaches more than 15%；
(3) rationally the race of discharge pressure filter emits ore pulp
The present invention is by discharging the automatic Control Systems of Liquids Height of case, and automatic-discharging pressure filter runs the ore pulp that emits, solves pressure filter release pipe and goes from place to place and emit the problem of ore pulp, alleviates the workload of operator, reduce labor intensity, improve the working environment in filter pressing workshop.
Gases at high pressure from the discharge nozzle discharge in release bottom portion, are discharged from the acoustic filter of release upper box part, are the innovations on pressure filter back-blowing pressure relief device by the present invention by pressure filter back-blowing pressure release the emitted ore pulp of pipe；Present configuration is simple, gases at high pressure carries out five dilatations and eliminates the noise, and soundproof effect is notable, back-blowing pressure release the emitted ore pulp of pipe can be avoided to enter acoustic filter, improve circumstance, solve the race of pressure filter ore pulp and emit problem, substantially increase production efficiency, have huge economic and social benefit.
Claims (10)
1. a pressure filter back-blowing pressure release silencing apparatus, including pressure filter back-blowing pressure release pipe, release case, magnetic flap level gauge, computer and electric check valve, it is characterized in that, the top of release case (2) is that side is low, high stepped of opposite side, pressure filter back-blowing pressure release pipe (1) is placed in above the side that release case (2) top is low, acoustic filter (6) is placed in above release height side, case (2) top, equipped with magnetic flap level gauge (3) on the lateral wall of release case (2), release case (2) bottom, lateral wall below magnetic flap level gauge equipped with magnetic flap level gauge at the discharge nozzle of homonymy, electric check valve (5) is had on discharge nozzle, magnetic flap level gauge (3) respectively with electric check valve (5), computer (4) connects.
Pressure filter back-blowing pressure the most according to claim 1 release silencing apparatus, it is characterized in that, described pressure filter back-blowing pressure release pipe (1) has 1-6, it is distributed on above the side that release case (2) top is low, the internal diameter of described pressure filter back-blowing pressure release pipe (1) is 50-80mm, lower end puts in 100-200mm in release case, and the pressure filter back-blowing pressure release pipe lower end sidewall in release case has the pore of diameter 20-30mm, and described pore has 6-10.
Pressure filter back-blowing pressure the most according to claim 1 release silencing apparatus, it is characterized in that, described release case (2) is the cube of bottom angled, bottom is 10-20 ° with the angle of horizontal plane, discharge nozzle is placed in the lower sidewall of release relatively low one end, bottom portion, the long 2000mm, wide 2000mm of described release case, the a height of 2000mm in side, a height of 2600-3000mm of opposite side.
Pressure filter back-blowing pressure the most according to claim 1 release silencing apparatus, it is characterized in that, the upper limit level of described magnetic flap level gauge (3) is 2000-2200mm, bottom limit level is 200mm, magnetic flap level gauge (3) is connected with electric check valve (5), constituting release case (2) automatic Control Systems of Liquids Height, magnetic flap level gauge is connected with computer (4), constitutes long distance control system.
Pressure filter back-blowing pressure the most according to claim 1 release silencing apparatus, it is characterised in that described acoustic filter (6) has 1-6.
nullPressure filter back-blowing pressure the most according to claim 1 release silencing apparatus，It is characterized in that，Described acoustic filter (6) includes housing、Blast pipe、Expanding chamber、Restricting orifice、Sound-absorbing material、Throttle pipe and rainhat，In housing under have the first expanding chamber (12) the most successively、Second expanding chamber (13)、3rd expanding chamber (14) and the 4th expanding chamber (15)，Sound-absorbing material one (17) it is filled with in each expanding chamber，Constitute the first sound absorbing layer，Rainhat (19) is arranged at the top of housing，Blast pipe (7) is arranged at bottom，The lower end of blast pipe (7) is connected with release case (2)，The upper end of blast pipe (7) is connected with the first expanding chamber (12)，First expanding chamber (12) is connected with the 4th expanding chamber (15) through first segment flow tube (8)，Second expanding chamber (13) is connected with the 4th expanding chamber (15) through second section flow tube (9)，Second expanding chamber (13) is connected with the 3rd expanding chamber (14) through the 3rd throttle pipe (10)，3rd expanding chamber (14) air outside the 4th throttle pipe (11) is with housing communicates，The second sound absorbing layer that the sound-absorbing material two (18) being placed in respective expanding chamber tiles is had with each expanding chamber outside the mouth of pipe that each throttle pipe is connected，First throttle orifice plate (16) is arranged at the bottom of the first sound absorbing layer between the first sound absorbing layer and the second sound absorbing layer and in the first expanding chamber (12).
nullPressure filter back-blowing pressure the most according to claim 6 release silencing apparatus，It is characterized in that，The second described sound absorbing layer is by the second sound absorbing layer A、Second sound absorbing layer B、Second sound absorbing layer C、Second sound absorbing layer D and the second sound absorbing layer E is constituted，The the second sound absorbing layer A being placed in the first expanding chamber internal upper part is had outside the lower nozzle of first segment flow tube (8)，Have, outside the upper orifice of first segment flow tube (8) and the upper orifice of second section flow tube (9), the second sound absorbing layer B being placed in the 4th expanding chamber (15) interior bottom，Have, outside the lower nozzle of second section flow tube (9) and the lower nozzle of the 3rd throttle pipe (10), the second sound absorbing layer C being placed in the second expanding chamber (13) internal upper part，Have, outside the upper orifice of the 3rd throttle pipe (10), the second sound absorbing layer D being placed in the 3rd expanding chamber (14) interior bottom，Have, outside the lower nozzle of the 4th throttle pipe (11), the second sound absorbing layer E being placed in the 3rd expanding chamber (14) internal upper part.
Pressure filter back-blowing pressure the most according to claim 6 release silencing apparatus, it is characterized in that, described housing is the steel plate that 5mm is thick, described the first expanding chamber (12), the second expanding chamber (13), the 3rd expanding chamber (14) are identical with the size of the 4th expanding chamber (15), internal diameter is 400mm, is highly 300mm.
Pressure filter back-blowing pressure the most according to claim 6 release silencing apparatus, it is characterised in that described restricting orifice (16) is the steel plate that 3mm is thick, and percent opening is 20%-30%, and aperture is 10-15mm.
Pressure filter back-blowing pressure the most according to claim 6 release silencing apparatus; it is characterized in that; described sound-absorbing material one (17) is haydite or stone; particle diameter is 10-30mm; described sound-absorbing material two (18) is Cotton Gossypii, sponge or acoustical cotton; the internal diameter of described blast pipe (7) is 200mm, a length of 150mm；The internal diameter of first segment flow tube (8), second section flow tube (9), the 3rd throttle pipe (10) and the 4th throttle pipe (11) is 32mm, first segment flow tube (8) a length of 650mm, second section flow tube (9) a length of 350mm, 3rd throttle pipe (10) a length of 80mm, the 4th throttle pipe (11) a length of 400mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510425845.XA CN105056592B (en) | 2015-07-20 | 2015-07-20 | Pressure filter back-blowing pressure release silencing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510425845.XA CN105056592B (en) | 2015-07-20 | 2015-07-20 | Pressure filter back-blowing pressure release silencing apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN105056592A CN105056592A (en) | 2015-11-18 |
| CN105056592B true CN105056592B (en) | 2016-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510425845.XA Expired - Fee Related CN105056592B (en) | 2015-07-20 | 2015-07-20 | Pressure filter back-blowing pressure release silencing apparatus |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112212117B (en) * | 2020-10-29 | 2024-08-06 | 中冶京诚工程技术有限公司 | An exhaust muffler |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6132176A (en) * | 1999-01-08 | 2000-10-17 | United States Filter Corporation | Flow control sensor and method for filling of a filter press |
| WO2000071222A2 (en) * | 1999-05-20 | 2000-11-30 | Se Jun Park | Drainage sludge dehydration and dry system |
| CN204159094U (en) * | 2014-10-17 | 2015-02-18 | 金川集团股份有限公司 | A kind of filtrate water conservancy diversion silencing means |
| CN204469509U (en) * | 2015-02-03 | 2015-07-15 | 拜城县众泰煤焦化有限公司 | A kind of filter press squeezing, percolation gas drying and preheating device |
| CN204841079U (en) * | 2015-07-20 | 2015-12-09 | 河南东大矿业股份有限公司 | Pressure filter anti -blow pressure release noise eliminator |
-
2015
- 2015-07-20 CN CN201510425845.XA patent/CN105056592B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6132176A (en) * | 1999-01-08 | 2000-10-17 | United States Filter Corporation | Flow control sensor and method for filling of a filter press |
| WO2000071222A2 (en) * | 1999-05-20 | 2000-11-30 | Se Jun Park | Drainage sludge dehydration and dry system |
| CN204159094U (en) * | 2014-10-17 | 2015-02-18 | 金川集团股份有限公司 | A kind of filtrate water conservancy diversion silencing means |
| CN204469509U (en) * | 2015-02-03 | 2015-07-15 | 拜城县众泰煤焦化有限公司 | A kind of filter press squeezing, percolation gas drying and preheating device |
| CN204841079U (en) * | 2015-07-20 | 2015-12-09 | 河南东大矿业股份有限公司 | Pressure filter anti -blow pressure release noise eliminator |
Non-Patent Citations (1)
| Title |
|---|
| KZG压滤机在谢桥选煤厂的应用;蒋天亮;《洁净煤技术》;20101231(第06期);全文 * |
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Address after: Dengfeng City, Henan province 452470 city of Zhengzhou Tang Zhuang Xiang Tang Dong Cun Bei River Patentee after: HENAN DONGDA TECHNOLOGY CO.,LTD. Address before: Dengfeng City, Henan province 452470 city of Zhengzhou Tang Zhuang Xiang Tang Dong Cun Bei River Patentee before: HENAN DONGDA MINING Co.,Ltd. |
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Granted publication date: 20161130 |