CN109485224B - Vacuum screw shaft bag filter - Google Patents
Vacuum screw shaft bag filter Download PDFInfo
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- CN109485224B CN109485224B CN201811611721.0A CN201811611721A CN109485224B CN 109485224 B CN109485224 B CN 109485224B CN 201811611721 A CN201811611721 A CN 201811611721A CN 109485224 B CN109485224 B CN 109485224B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
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- Hydrology & Water Resources (AREA)
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- Organic Chemistry (AREA)
- Filtration Of Liquid (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention belongs to the technical field of filtering equipment, and particularly relates to a vacuum spiral shaft bag type filter. The filter comprises a primary filtering system, a secondary filtering system and a vacuum pump, the primary filtering system is communicated with the secondary filtering system, and the vacuum pump is arranged on the secondary filtering system; the filter comprises a primary filtering system and a secondary filtering system, wherein the primary filtering system and the secondary filtering system respectively comprise a speed reducer, a feeding device, a filter sleeve, a screw shaft, filter cloth, a water outlet and the like, the feeding device is communicated with the filter sleeve, the screw shaft is arranged in the filter sleeve, the filter cloth is arranged between the filter sleeve and the screw shaft, the water outlet is connected with the bottom end of the filter sleeve, and the speed reducer is used for driving the screw shaft. The vacuum spiral shaft bag type filter adopts a two-stage filtering system and is provided with the spiral shaft and the vacuum pump, so that the filtering efficiency is improved, the formation of filter cakes is reduced, the replacement period of filter cloth is shortened, and the service life of the filter cloth is prolonged.
Description
Technical Field
The invention belongs to the technical field of filtering equipment, and particularly relates to a vacuum spiral shaft bag type filter.
Background
The bag filter is a pressure type filter device, mainly comprising a filter cylinder body, a filter cylinder cover, a quick opening mechanism, a stainless steel filter bag reinforcing net and other main components, wherein filtrate flows into the filter bag through a side liquid inlet pipe of the filter shell, the filter bag is arranged in a reinforcing net basket, the qualified filtrate can be obtained after the liquid penetrates through the filter bag with the required fineness grade, impurity particles are intercepted by the filter bag, and the filter bag can be continuously used after being replaced.
The bag filter is a multipurpose filtering device which has the advantages of novel structure, small volume, simple and flexible operation, energy conservation, high efficiency, closed work and strong applicability. Particularly, the filter bag has small side leakage probability, can accurately ensure the filtering precision, and can quickly change the filter bag, so that the operation cost is reduced. The inner and outer surfaces of the filter are polished by mechanical sand blasting, and the filter is average and easy to clean. The filtering method adopted by the bag filter is a side-in side-out method, and can also be a side-in bottom-out method, a filtering liquid medium is pressed or pumped into a barrel body of the bag filter by the pressure in a pipeline, the liquid medium to be filtered supports the filtering of a filter bag supported by a filter basket through electropolishing and punching, and the changed solid and liquid respectively reach the result that the liquid medium is filtered.
However, after the filter cloth in the bag filter is used for a long time, filter cakes are bonded in the filter bag, the existence of the filter cakes can cause the flow resistance of the filter bag, and if the filter cakes are not removed in time, the filtering speed is greatly reduced, and the energy consumption is increased. In addition, the filter cloth is troublesome to clean, and the filter cloth is easy to harden after cleaning, and the filtering capacity is reduced. Therefore, it is necessary to develop a new bag filter.
Disclosure of Invention
In view of the problems in the prior art, the present invention aims to provide a vacuum spiral shaft bag filter. The filter adopts a two-stage filtering system and is provided with the spiral shaft and the vacuum pump, so that the filtering efficiency is improved, the formation of a filter cake is slowed down, the replacement period of the filter cloth is shortened, and the service life of the filter cloth is prolonged.
One of the purposes of the invention is to provide a vacuum spiral shaft bag filter.
The invention also aims to provide a using method of the vacuum spiral shaft bag filter.
The invention also aims to provide application of the vacuum spiral shaft bag filter.
In order to realize the purpose, the invention discloses the following technical scheme:
first, the present invention discloses a vacuum screw shaft bag filter, comprising: the device comprises a primary speed reducer, a primary feeding device, a primary filter sleeve, a primary screw shaft, primary filter cloth, a primary water outlet, an electric control blanking valve, a secondary speed reducer, a secondary feeding device, a secondary screw shaft, a secondary filter sleeve, a secondary water outlet, a discharging device, a vacuum pump and secondary filter cloth.
The vertical setting of primary filter sleeve, one-level pan feeding device and primary filter sleeve intercommunication, the one-level filters the sleeve and provides the place for the one-level filtration, the one-level speed reducer sets up on one-level pan feeding device.
The primary screw shaft is internally provided with a primary filter sleeve along the axial direction of the primary filter sleeve, the other end of the primary screw shaft is connected with a primary speed reducer, and the primary screw shaft is provided with blades. Under the drive of one-level speed reducer, the one-level screw axis is at the internal rotation of one-level filter sleeve, and when liquid material got into the one-level filter sleeve from one-level pan feeding device, the screw axis was through rotating, and the disturbance material reduced the solid matter flocculation and is piled up to provide certain centrifugal force through rotating, reinforcing filtration efficiency drives the blade simultaneously and scrapes down the solid matter on the filter cloth, slows down the filter cake and forms.
The one-level filter cloth is arranged between the one-level filter sleeve and the one-level screw shaft around the one-level screw shaft so as to carry out first-level filtering on liquid materials, the one-level filtering is preliminary filtering, if material particles are large, the effect can be realized by the one-level filtering, if the one-level filtering effect is poor, the two-level filtering is carried out, and the filtering efficiency is improved by the two-level filtering.
The primary water outlet is arranged on the side surface of the primary filter sleeve and arranged at the lower part of the primary filter sleeve, and is mainly used for discharging filtrate filtered from the primary filter cloth.
The one end and the telescopic bottom intercommunication of primary filter of automatically controlled unloading valve, the other end and the second grade pan feeding device intercommunication of automatically controlled unloading valve, and second grade pan feeding device level set up, the telescopic one end and the second grade pan feeding device intercommunication of secondary filter, the telescopic other end and the discharging device intercommunication of secondary filter, the telescopic internal pressure of primary filter is responded to in the automatically controlled unloading valve effect, provides the filter time for the primary filter.
The secondary screw shaft is arranged in the secondary feeding device and the secondary filter sleeve, the secondary filter sleeve provides a place for secondary filtering, the secondary screw shaft is driven by a secondary speed reducer, and the secondary screw shaft is provided with blades.
The secondary filter cloth is arranged between the secondary filter sleeve and the secondary screw shaft around the secondary screw shaft so as to be convenient for secondary filtration of liquid materials, the secondary screw shaft disturbs the materials by rotating to reduce flocculation and accumulation of solids, drives the solid materials to be conveyed forwards and discharged from a discharge port, and simultaneously drives the blades to scrape the solid materials on the filter cloth so as to slow down formation of a filter cake; the vacuum pump is communicated with the secondary filter sleeve; the secondary water outlet is communicated with the secondary filter sleeve, and the vacuum pump provides pumping force, so that the material flowing speed is increased, and the filtering efficiency is improved.
Further, the one-level pan feeding device comprises a one-level pan feeding port and a one-level pipe body, and the one-level pan feeding port of the one-level pan feeding device is communicated with the one-level filter sleeve through a flange.
Further, the primary speed reducer is connected with the primary spiral shaft through a coupler.
Furthermore, the primary filter sleeve is made of stainless steel and is communicated with the electric control blanking valve through a flange.
Furthermore, the electric control blanking valve is communicated with the secondary feeding device through a flange.
Further, the second grade pan feeding device comprises second grade pan feeding mouth and second grade body, and the second grade pan feeding mouth that the second grade pan feeding device leads to passes through flange and second grade filter sleeve intercommunication.
Further, the second-stage speed reducer is communicated with a second-stage feeding device through a flange.
Further, the secondary speed reducer is connected with the secondary screw shaft through a coupler.
Further, the second-stage filter sleeve is made of stainless steel.
The invention further discloses a using method of the vacuum spiral shaft bag filter, which comprises the following steps:
(1) firstly, feeding materials into a primary pipe body through a primary feeding port on a primary feeding device, then feeding the materials into a primary filter sleeve, driving the materials to rotate on a primary screw shaft by a primary speed reducer, filtering the materials under the action of the primary screw shaft, discharging filtrate through primary filter cloth, and discharging the filtrate out of the primary filter sleeve through a primary water outlet;
(2) the residual materials enter a secondary feeding device through an electric control blanking valve, a secondary speed reducer drives a secondary screw shaft to rotate, a vacuum pump performs vacuum pumping, the materials are filtered again under the action of the secondary screw shaft, and filtrate is discharged through secondary filter cloth and then discharged out of a secondary filter sleeve through a secondary water outlet; and discharging the residual materials through a discharging device.
Finally, the invention discloses the application of the vacuum spiral shaft bag filter in the field of environmental protection.
Compared with the prior art, the invention has the following beneficial effects: the invention adopts a two-stage filtration system and utilizes the spiral shaft and the vacuum pump, thereby improving the filtration efficiency, slowing down the formation of filter cakes, reducing the replacement period of the filter cloth, prolonging the service life of the filter cloth and being suitable for the separation of various solid-liquid mixtures.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
Fig. 1 is a schematic structural diagram of a vacuum screw shaft bag filter according to the present invention.
The reference numerals in the drawings denote: 1-first-stage speed reducer, 2-first-stage feeding device, 3-first-stage filter sleeve, 4-first-stage screw shaft, 5-first-stage filter cloth, 6-first-stage water outlet, 7-electric control blanking valve, 8-second-stage speed reducer, 9-second-stage feeding device, 10-second-stage screw shaft, 11-second-stage filter sleeve, 12-second-stage water outlet, 13-discharging device, 14-vacuum pump and 15-second-stage filter cloth.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
As described in the background art, after the filter cloth in the existing bag filter is used for a long time, filter cakes are bonded in the filter bag, the existence of the filter cakes can cause the flow resistance of the fabric filter bag, and if the filter cakes are not removed in time, the filtering speed is greatly reduced, and the energy consumption is increased. In addition, the filter cloth is troublesome to clean, and the filter cloth is easy to harden after cleaning, and the filtering capacity is reduced. Accordingly, the present invention provides a vacuum screw shaft bag filter; the invention will now be further described with reference to the accompanying drawings and detailed description.
Example 1
As shown in fig. 1, a vacuum screw axis bag filter comprises: the device comprises a primary speed reducer 1, a primary feeding device 2, a primary filter sleeve 3, a primary screw shaft 4, primary filter cloth 5, a primary water outlet 6, an electric control blanking valve 7, a secondary speed reducer 8, a secondary feeding device 9, a secondary screw shaft 10, a secondary filter sleeve 11, a secondary water outlet 12, a discharging device 13, a vacuum pump 14 and secondary filter cloth 15.
The vertical setting of primary filter sleeve 3, one-level pan feeding device 2 and primary filter sleeve 3 intercommunication, one-level speed reducer 1 sets up on one-level pan feeding device 2.
The primary screw shaft 4 is internally provided with the primary filter sleeve 3 along the axial direction of the primary filter sleeve 3, the other end of the primary screw shaft 4 is connected with the primary speed reducer 1, the primary screw shaft 4 rotates in the primary filter sleeve 3 under the driving of the primary speed reducer 1, and when liquid materials enter the primary filter sleeve 3 from the primary feeding device 2, the primary screw shaft 4 can play a good role in speed reduction; the first-stage screw shaft 4 is provided with a screw shaft with blades.
The primary filter cloth 5 is arranged between the primary filter sleeve 3 and the primary screw shaft 4 around the primary screw shaft 4 so as to carry out primary filtration on liquid materials.
The primary water outlet 6 is arranged on the side surface of the primary filter sleeve 3 and is arranged at the lower part of the primary filter sleeve 3, and the primary water outlet is mainly used for discharging filtrate filtered from the primary filter cloth 5.
One end of the electric control blanking valve 7 is communicated with the bottom end of the primary filter sleeve 3, the other end of the electric control blanking valve 7 is communicated with the secondary feeding device 9, the secondary feeding device 9 is horizontally arranged, one end of the secondary filter sleeve 11 is communicated with the secondary feeding device 9, and the other end of the secondary filter sleeve 11 is communicated with the discharging device 13.
The secondary screw shaft 10 is arranged in the secondary feeding device 9 and the secondary filter sleeve 11, and the secondary screw shaft 10 is driven by the secondary speed reducer 8. The second-stage screw shaft 10 is provided with a screw shaft with blades.
The secondary filter cloth 15 is arranged between the secondary filter sleeve 11 and the secondary screw shaft 10 around the secondary screw shaft 10; the vacuum pump 14 is communicated with the secondary filter sleeve 11; the secondary water outlet 12 is communicated with the secondary filter sleeve 11.
The one-level pan feeding device 2 comprises one-level pan feeding mouth and one-level body, and the one-level pan feeding mouth of one-level pan feeding device 2 passes through flange and one-level filter sleeve 3 intercommunication.
The primary speed reducer 1 is connected with the primary screw shaft 4 through a coupler. The primary filter sleeve 3 is made of stainless steel, and the primary filter sleeve 3 is communicated with the electric control blanking valve 7 through a flange. And the electric control blanking valve 7 is communicated with a secondary feeding device 9 through a flange.
Second grade pan feeding device 9 comprises second grade pan feeding mouth and second grade body, and the second grade pan feeding mouth that second grade pan feeding device 9 leads to passes through flange and second grade filter sleeve 11 intercommunication. And the secondary speed reducer 8 is communicated with a secondary feeding device 9 through a flange. The secondary speed reducer 8 is connected with a secondary screw shaft 10 through a coupler. The secondary filter sleeve 11 is made of stainless steel.
Example 2
The livestock and poultry manure yield of a certain farm is 100 tons/day, the solid content is 15 percent, the water content in external transportation is too large, and the transportation cost is higher. The livestock and poultry manure sewage of the farm is treated by adopting the vacuum spiral shaft bag filter described in the embodiment 1:
(1) firstly, livestock and poultry manure is thrown into a primary pipe body through a primary feeding port on a primary feeding device 2, then the livestock and poultry manure enters a primary filter sleeve 3, a primary speed reducer 1 is driven to rotate on a primary screw shaft 4, the livestock and poultry manure is filtered under the action of the primary screw shaft 4, filtrate is discharged through a primary filter cloth 5 and then discharged out of the primary filter sleeve 3 through a primary water outlet 6, and the solid content of the livestock and poultry manure is measured to be 8%;
(2) when a certain pressure is reached, the electric control blanking valve is opened, the residual livestock and poultry manure enters the secondary feeding device 9 through the electric control blanking valve 7, the secondary speed reducer 8 drives the secondary screw shaft 10 to rotate, the vacuum pump 14 performs vacuum pumping, the livestock and poultry manure is filtered again under the action of the secondary screw shaft 10, the filtrate is discharged through the secondary filter cloth 15, and is discharged out of the secondary filter sleeve 11 through the secondary water outlet 12, and the solid content of the discharged water is 1%; the solid manure is discharged through a discharge device 13, and the solid content of the solid manure is measured to be 60%.
Through the test, this embodiment can handle 15 tons of beasts and birds excrement per hour, and after 1 month of continuous operation, filtration efficiency begins to descend, just needs to wash and change the filter cloth.
Example 3
In a certain sewage treatment enterprise, the sludge yield is 50 tons/day, the water content is as high as 98 percent, and the sludge volume is large, so that the subsequent treatment is not facilitated. The livestock and poultry manure sewage of the farm is treated by adopting the vacuum spiral shaft bag filter described in the embodiment 1:
(1) firstly, throwing sludge into a primary pipe body through a primary feeding port on a primary feeding device 2, then feeding the sludge into a primary filter sleeve 3, driving a primary speed reducer 1 to rotate on a primary screw shaft 4, filtering the sludge under the action of the primary screw shaft 4, discharging filtrate through primary filter cloth 5, and discharging the filtrate out of the primary filter sleeve 3 through a primary water outlet 6, and determining that the solid content is 5%;
(2) when certain pressure is reached, the electric control blanking valve is opened, residual sludge enters the secondary feeding device 9 through the electric control blanking valve 7, the secondary speed reducer 8 drives the secondary screw shaft 10 to rotate, the vacuum pump 14 performs vacuum pumping, the sludge is filtered again under the action of the secondary screw shaft 10, filtrate is discharged through the secondary filter cloth 15 and then discharged out of the secondary filter sleeve 11 through the secondary water outlet 12, and the solid content of discharged water is 1%; the excess sludge is discharged through a discharging device 13, and the water content of the excess sludge is reduced to 70%.
Through the test, this embodiment can handle 15 tons of mud per hour, and after 2 months of continuous operation, filtration efficiency begins to descend, just needs to wash the change filter cloth.
And certain vertical bag filter, the structure only has filter cloth and sleeve, and the material can only be once filtered, and the filter effect is poor, and the filter cake piles up seriously, just must wash and change the filter cloth when continuous operation week, however, such change frequency is too frequent, filter cloth life greatly reduced. The invention adopts two-stage filtration and is provided with the spiral shaft to stir and scrape off solids, thereby slowing down the formation of filter cakes, greatly improving the filtration efficiency, prolonging the operation period and having obvious effect.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (9)
1. A vacuum screw shaft bag filter, said filter comprising: the device comprises a primary speed reducer, a primary feeding device, a primary filter sleeve, a primary screw shaft, primary filter cloth, a primary water outlet, an electric control blanking valve, a secondary speed reducer, a secondary feeding device, a secondary screw shaft, a secondary filter sleeve, a secondary water outlet, a discharging device, a vacuum pump and secondary filter cloth;
the primary filter sleeve is vertically arranged, the primary feeding device is communicated with the primary filter sleeve, and the primary speed reducer is arranged on the primary feeding device;
the primary screw shaft is arranged inside the primary filter sleeve along the axial direction of the primary filter sleeve, and the other end of the primary screw shaft is connected with the primary speed reducer;
the primary filter cloth is arranged between the primary filter sleeve and the primary screw shaft around the primary screw shaft;
the primary water outlet is arranged on the side surface of the primary filter sleeve and is arranged at the lower part of the primary filter sleeve;
one end of the electric control blanking valve is communicated with the bottom end of the primary filter sleeve, the other end of the electric control blanking valve is communicated with the secondary feeding device, the secondary feeding device is horizontally arranged, one end of the secondary filter sleeve is communicated with the secondary feeding device, and the other end of the secondary filter sleeve is communicated with the discharging device;
the secondary screw shaft is arranged in the secondary feeding device and the secondary filter sleeve and is driven by a secondary speed reducer; the first-stage screw shaft and the second-stage screw shaft are both provided with blades;
the secondary filter cloth is arranged between the secondary filter sleeve and the secondary spiral shaft around the secondary spiral shaft so as to facilitate secondary filtration of the liquid material; the vacuum pump is communicated with the secondary filter sleeve; and the secondary water outlet is communicated with the secondary filter sleeve.
2. A vacuum screw shaft bag filter as claimed in claim 1, wherein said primary inlet means comprises a primary inlet port and a primary tube, and wherein the primary inlet port of the primary inlet means is in communication with the primary filter sleeve via a flange.
3. A vacuum screw shaft bag filter as claimed in claim 1, wherein said primary reduction gear and said secondary reduction gear are connected to said primary screw shaft and said secondary screw shaft, respectively, by couplings.
4. A vacuum screw shaft bag filter as claimed in claim 1, wherein said secondary inlet means comprises a secondary inlet port and a secondary tube, and wherein the secondary inlet port of the secondary inlet means communicates with the secondary filter sleeve via a flange.
5. A vacuum screw shaft bag filter as set forth in claim 1, wherein said primary filter sleeve is stainless steel and said primary filter sleeve is in communication with said electrically controlled feed valve through a flange.
6. A vacuum screw shaft bag filter as set forth in claim 1 wherein said electrically controlled discharge valve is in communication with a secondary inlet means via a flange.
7. A vacuum screw shaft bag filter as set forth in claim 1, wherein said secondary speed reducer is in communication with the secondary feed means through a flange.
8. A vacuum screw shaft bag filter as set forth in claim 1 wherein said secondary filter sleeve is stainless steel.
9. Use of a vacuum screw shaft bag filter according to any of claims 1 to 8, comprising the steps of:
(1) firstly, feeding materials into a primary pipe body through a primary feeding port on a primary feeding device, then feeding the materials into a primary filter sleeve, driving the materials to rotate on a primary screw shaft by a primary speed reducer, filtering the materials under the action of the primary screw shaft, discharging filtrate through primary filter cloth, and discharging the filtrate out of the primary filter sleeve through a primary water outlet;
(2) the residual materials enter a secondary feeding device through an electric control blanking valve, a secondary speed reducer drives a secondary screw shaft to rotate, a vacuum pump performs vacuum pumping, the materials are filtered again under the action of the secondary screw shaft, and filtrate is discharged through secondary filter cloth and then discharged out of a secondary filter sleeve through a secondary water outlet; and discharging the residual materials through a discharging device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811611721.0A CN109485224B (en) | 2018-12-27 | 2018-12-27 | Vacuum screw shaft bag filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811611721.0A CN109485224B (en) | 2018-12-27 | 2018-12-27 | Vacuum screw shaft bag filter |
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| Publication Number | Publication Date |
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| CN109485224A CN109485224A (en) | 2019-03-19 |
| CN109485224B true CN109485224B (en) | 2020-04-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811611721.0A Active CN109485224B (en) | 2018-12-27 | 2018-12-27 | Vacuum screw shaft bag filter |
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Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4244287A (en) * | 1979-07-09 | 1981-01-13 | Uop Inc. | Two-stage mechanical dewatering of sewage sludge |
| CN201046362Y (en) * | 2006-09-25 | 2008-04-16 | 王勇 | Full-automatic effluent purification machine |
| CN201284282Y (en) * | 2008-06-10 | 2009-08-05 | 丹东北方环保工程有限公司 | Spiral type two-stage sludge dewatering machine |
| KR101457922B1 (en) * | 2011-08-08 | 2014-11-05 | 엔비텍 주식회사 | Apparatus for separating wastewater and sludge |
| JP2014151321A (en) * | 2013-02-07 | 2014-08-25 | Green Technology Co Ltd | Dewatering equipment |
| CN204569702U (en) * | 2015-04-07 | 2015-08-19 | 东莞市金颢轩环境工程设备科技有限公司 | Double-deck level filtering type helical compression sludge dewatering equipment |
| CN106396331B (en) * | 2016-07-12 | 2017-07-11 | 厦门理工学院 | A kind of sludge concentration and dewatering desiccation integral processing unit and its processing method |
| CN207158903U (en) * | 2017-09-14 | 2018-03-30 | 安徽世绿环保科技有限公司 | A kind of glass toughening manure pit hardening dirt disposer of multistage filtering |
| CN107721118A (en) * | 2017-11-03 | 2018-02-23 | 邱杨舒 | A kind of multistage sludge high effective dehydration device |
| CN208279482U (en) * | 2017-12-15 | 2018-12-25 | 安泰环境工程技术有限公司 | A kind of continous way steel rolling greasy filth pyrolysis charring processing unit |
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2018
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Address after: 250002 Science Park 0203, National University of Shandong University, 54 Ma'anshan Road, Shizhong District, Jinan City, Shandong Province Patentee after: Shandong Xianghuan Environmental Technology Co.,Ltd. Patentee after: SHANDONG University Patentee after: JINAN XIANGFENG ENERGY TECHNOLOGY Co.,Ltd. Address before: 250002 Science Park 0203, National University of Shandong University, 54 Ma'anshan Road, Shizhong District, Jinan City, Shandong Province Patentee before: SHANDONG XIANGHENG ENVIRONMENTAL PROTECTION ENGINEERING Co.,Ltd. Patentee before: SHANDONG University Patentee before: JINAN XIANGFENG ENERGY TECHNOLOGY Co.,Ltd. |
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