CN100342940C - Bi-directional flow surface aggregate structure of oil water separator, and manufacturing method - Google Patents

Bi-directional flow surface aggregate structure of oil water separator, and manufacturing method Download PDF

Info

Publication number
CN100342940C
CN100342940C CNB2005100344999A CN200510034499A CN100342940C CN 100342940 C CN100342940 C CN 100342940C CN B2005100344999 A CNB2005100344999 A CN B2005100344999A CN 200510034499 A CN200510034499 A CN 200510034499A CN 100342940 C CN100342940 C CN 100342940C
Authority
CN
China
Prior art keywords
chamber
filter core
oil
water separator
filter
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
Application number
CNB2005100344999A
Other languages
Chinese (zh)
Other versions
CN1727030A (en
Inventor
洪川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen LAND ECO Environment Technology Co., Ltd.
Original Assignee
洪川
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 洪川 filed Critical 洪川
Priority to CNB2005100344999A priority Critical patent/CN100342940C/en
Publication of CN1727030A publication Critical patent/CN1727030A/en
Application granted granted Critical
Publication of CN100342940C publication Critical patent/CN100342940C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Abstract

The present invention relates to a bidirectional flow surface polymerization type oil and water separator structure and a manufacturing method thereof. The inside of a casing (1) comprises a first chamber (6) and a second chamber (7) which are parallel as well as a third chamber (8) positioned under the two chambers, and a filter core (5) is reversely hung on the top surface of the first chamber (6) and inserted on a filter plate under the second chamber (7). The upper parts of the first chamber (6) and the second chamber (7) are respectively provided with an oil collection device (4), a water inlet (2) is arranged at the lower part of the first chamber (6), a perforation filter tube (51) of the filter core (5) in the second chamber (7) is respectively communicated with the first chamber (6) and the third chamber (8), a water outlet (3) is arranged at a lower position of the third chamber (8), and the surface of the perforation filter tube (51) is coated with an oil and water separation medium (52) with surface modification and forced modified treatment. The present invention has the advantages of high oil and water treating precision, direct treatment for chemical emulsification oil with a surface active agent, little occupation area and long service life of the filter core.

Description

Bi-directional flow surface aggregate formula oil water separator and manufacture method
Technical field the present invention relates to sewage disposal technology, particularly relates to the device that separates profit and the manufacture method of this profit device.
Background technology oil water separator of the prior art, its separation principle mainly contain three kinds:
First kind is to carry out water-oil separating according to Stock ' s principle.Specifically be to utilize profit proportion difference, use some technological means that small greasy dirt is assembled and grow up to float and separate.This kind method can not be separated oil emulsion, and separating effect and efficient are all relatively poor.But it is used for the not high occasion of separation accuracy owing to simply, be the main means of present water-oil separating.
Second kind is to carry out water-oil separating according to the principle of absorption.Promptly, oil is deviate from from water thereby oil is adsorbed on material surface by certain sorbing material (as bigger serface materials such as fiber, activated carbon).This kind method is owing to material can the saturated adsorption function that loses of very fast absorption.As continue to use and must do desorption and handle, complexity and expense height, practical value is not high, generally is used in the very little water yield and handles.
The third is to use a kind of coarse material, and the angle of wetting that produces when making profit contact this material surface is different and differentiation is assembled, and breaks away from this material surface come-up thereby make small oil droplet assemble the back of growing up at this material surface.This process is called coarse.This method can be used to handle oil emulsion, but but does not see the user for the chemical emulsification oil that has added surfactant.Use this method generally as using sand filter, use the coarse material to make filtering layer, adopt the reverse flow mode to move.
More than three kinds of oil water separators be widely used in each water-oil separating field, but all have the not high problem of processing accuracy.At present best processing accuracy is generally water outlet oil-containing 5mg/l and (refers to handle the water yield at least in ton/h), very rarely be lower than 4mg/l's.This is satisfactory in most of occasions, goes into the situation of natural water as qualified discharge after the oily waste water treatment.But in the high-precision occasion of ask for something is undesirable, as contains the situation of the recycling of oil vapour condensed water in boiler feedwater, because of it requires to be lower than 0.7mg/l to oil-containing in the water.Because the defective of the coarse material of principle defective and use makes that oil water separator efficient in the market is lower, floor space is big, and is bulky in addition.
Yet there are no a kind of oil water separator in the market, can directly separate without chemistry-mechanical breakdown of emulsion the oil emulsion that contains surfactant.
The summary of the invention the technical problem to be solved in the present invention is to avoid above-mentioned the deficiencies in the prior art part and proposes a kind of bi-directional flow surface aggregate structure of oil water separator and manufacture method, uses oil water separator separating oil crystal degree height of the present invention, also can directly separate the chemical emulsification profit that contains surfactant.
The present invention solve the technical problem can be by realizing by the following technical solutions:
Design, use a kind of bi-directional flow surface aggregate structure of oil water separator, comprise housing, water inlet, delivery port and oil catcher, comprise first chamber arranged side by side and second chamber in the described housing, and be positioned at the 3rd chamber under described first chamber and second chamber, the end face of first chamber is hanging upside down filter core, is inserted with filter core on the below filter plate of second chamber; The center of described filter core is the perforation chimney filter, is coated with the medium that separates profit on this perforation chimney filter surface; The top of described first chamber and second chamber is respectively arranged with the oil catcher that is communicated with the cavity space of this first chamber and second chamber; Described water inlet is located at the bottom of first chamber, the perforation chimney filter of the first chamber inner filter core is communicated with the cavity space of second chamber by self root water pipe connecting, the perforation chimney filter of this second chamber inner filter core is communicated with the 3rd chamber by self root water pipe connecting again, and delivery port is located at the lower position of the 3rd chamber.
Make the method for above-mentioned bi-directional flow surface aggregate structure of oil water separator, comprise step:
1. the oil water separator housing is set;
2. described housing is divided into three chambers, first chamber and second chamber are positioned at the top of the 3rd chamber side by side, and the 3rd chamber lower position sets out the mouth of a river; Described first chamber and the second chamber top are communicated with oil catcher;
3. the acrylic short fiber after the surface modification is forced modifier treatment and made rope, be wrapped on the perforation chimney filter, make filter core with this rope;
4. described filter core is hung upside down respectively the end face of first chamber and be inserted in second chamber below on the filter plate, the perforation chimney filter of the first chamber inner filter core is communicated with the cavity space of second chamber by self root water pipe connecting, and the perforation chimney filter of this second chamber inner filter core is communicated with the 3rd chamber by self root water pipe connecting again.
The acrylic short fiber to surface modification after of step described in 3. forced modifier treatment, specifically may further comprise the steps successively:
A. the acrylic short fiber after 65mm~100mm is the long surface modification is made wool top, and this wool top was infiltrated in alkaline solution circulation immersion 60~90 seconds;
B. take off described wool top taking-up dried by dewaterer;
C. will take off the wool top shredding after doing, and put into and be preheating to 50 ℃~65 ℃ baking oven, and set oven temperature and be 90 ℃~96 ℃ this wool top forced modifier treatment 30 minutes~90 minutes;
D. it is standby to force four strands of wool tops after the modifier treatment to make rope.
Adopt bidirectional flow in the product design of the present invention, be that the first step is a concurrent, second one is reverse flow, and the separating medium of filter core adopts through surface modification and the acrylic short fiber after forcing modifier treatment simultaneously, compare with prior art, technique effect of the present invention is:
1. intaking oil-containing under the situation below the 500mg/l, the water outlet oil-containing is less than 0.7mg/l, and the profit processing accuracy of product of the present invention improves greatly.
2. the filter material that product employing modified fibre of the present invention is made can directly be handled the chemical emulsification oil that contains surfactant as separating medium (or claiming coarse material).
3. the hydraulic surface loading of product of the present invention can be up to 15m/h, make this product treatment unit volume and taking up an area of reduce greatly, and general oily-water seperating equipment hydraulic surface loading is 1~5m/h (hydraulic surface loading with the equipment of coarse material can reach 5m/h).Press the equipment equal height and calculate, the equal water yield occupation of land of product treatment of the present invention reduces 15~3 times.
4. because the separating medium of filter core only plays aggtegation to oil, and separation process does not need any power, do not have chemical reaction to take place, the life-span of filter core is not to be changed in 3 years yet, and water outlet does not simultaneously produce any harmful byproduct and derivative.
Description of drawings
Fig. 1 is the schematic perspective view of product bi-directional flow surface aggregate formula oil water separator of the present invention;
Fig. 2 is that schematic diagram is looked on the left side of Fig. 1;
Fig. 3 is the A-A cutaway view of Fig. 2;
Fig. 4 is the I portion enlarged diagram of Fig. 2.
The specific embodiment is described in further detail below in conjunction with the most preferred embodiment shown in the accompanying drawing.
The present embodiment bi-directional flow surface aggregate structure of oil water separator, as shown in Figure 1 to Figure 3, comprise housing 1, water inlet 2, delivery port 3 and oil catcher 4, comprise first chamber 6 arranged side by side and second chamber 7 in the described housing 1, and be positioned at the 3rd chamber 8 under described first chamber 6 and second chamber 7, the end face of first chamber 6 is hanging upside down the medium 52 of the profit of filter core 5, the second chambers 7.The top of described first chamber 6 and second chamber 7 be respectively arranged with this first chamber 6 below filter plates on be inserted with filter core 5; The center of described filter core 5 is perforation chimney filters 51, is coated with the oil catcher 4 of the cavity space connection of the separation and second chamber 7 on these perforation chimney filter 51 surfaces, and this oil catcher 4 is transparent, can observe the oil-collecting situation, by regularly oil extraction of by-pass valve control.Described water inlet 2 is located at the bottom of first chamber 6, the perforation chimney filter 51 of first chamber, 6 inner filter cores 5 is communicated with the cavity space of second chamber 7 by self root water pipe connecting (not shown), the perforation chimney filter 51 of these second chamber, 7 inner filter cores 5 is communicated with the 3rd chamber 8 by self root water pipe connecting again, and delivery port 3 is located at the lower position of the 3rd chamber 8.
As shown in Figure 2, the lateral surface of described three chambers (6,7,8) all has door 11, and as shown in Figure 4, described door 11 is fixing by screw rod and housing 1, near the screw rod place, is provided with sealing strip 12 between door 11 and the housing 1.
The manufacture method of present embodiment bi-directional flow surface aggregate formula oil water separator comprises step:
1. oil water separator housing 1 is set;
2. described housing 1 is divided into three chambers, first chamber 6 and second chamber 7 lay respectively at the top of the 3rd chamber 9, and utilize water distribution pipe to be communicated with first chamber 6 and the 3rd chamber 8 respectively second chamber 7; Described first chamber 6 bottoms are provided with on water inlet 2, the three chambers 8 and set out the mouth of a river 3; Described first chamber 6 and second chamber, 7 tops are communicated with oil catcher 4;
3. the acrylic short fiber after the surface modification is forced modifier treatment and made rope, be wrapped on the φ 28mm perforation chimney filter 51, make φ 70mm filter core 5 with this rope;
4. described filter core 5 is hung upside down respectively the end face of first chamber 6 and be inserted in second chamber 7 below on the filter plate, the perforation chimney filter 51 of first chamber, 6 inner filter cores 5 is communicated with the cavity space of second chamber 7 by self root water pipe connecting, and the perforation chimney filter 51 of these second chamber, 7 inner filter cores 5 is communicated with the 3rd chamber 8 by self root water pipe connecting again.
The present embodiment step 3. described in acrylic short fiber after the surface modification, be that Shenzhen snake mouth Glan environmental protection company produces.Described acrylic short fiber after the surface modification is forced modifier treatment, specifically may further comprise the steps successively:
A. 65mm is long acrylic short fiber is made the wool top of Φ 2mm, and this wool top is infiltrated in the alkaline solution, and the ON cycle pump soaked 60 seconds;
B. take off described wool top taking-up dried by dewaterer;
C. will take off wool top after doing with opener or manual shredding, baking oven after being preheating to 65 ℃, is put into wool top, limiting temperature is 95 ℃, and wool top is forced modifier treatment 30 minutes (constant temperature);
E. it is standby four strands of the wool tops after the strong modulation to be made rope.
As shown in Figure 3, the oil water separator operation process is specific as follows: the oil-water mixture body enters " first chamber 6 " from " water inlet pipe 2 ", filter core 5 reversals of the natural order of things in first chamber 6, under pressure, oil-water mixture has the trend that penetrates separating medium, but because the special nature of separating medium itself, the water that does not contain oil particles is easy to just penetrate separating medium, and then arrives " second chamber 7 " by water distribution pipe.In first chamber 6, last oil slick after the separation and ascending current be (to reduce elaioleucite rising resistance) in the same way, is called concurrent and handles.And oil particles is because very big in the surface tension difference of the surface tension on separating medium 52 surfaces and water, thereby and water separately grow up at surface aggregation, up to the separation of rising of enough buoyancy is arranged, on float in the oil catcher 4 of chamber roof.The liquid that enters into " second chamber 7 " also contains a spot of oil particles, separation process is the same with " first chamber 6 ", enter into " the 3rd chamber 8 " of device bottom through the water of second chamber, 7 separating mediums, " water purification " discharges from " outlet pipe 3 " at last, but the filter core of second chamber 7 is inserted in formation reverse flow two stage treatment on the filter plate of below.Secondary treatment yielding water enters the 3rd chamber 8, the three chambers 8 activated carbon or pottery filter pearl is housed, and forms tertiary treatment (tertiary treatment is not water-oil separating, but reduces water outlet CODcr value in some specific needs occasion).
Report according to environment protection and monitoring, the described oil water separator of present embodiment is under the situation of 389mg/l at the water inlet oil-containing, treated water outlet oil content is 0.65mg/l, with respect to separation accuracy water outlet oil-containing 5mg/l best in the prior art, the profit processing accuracy of product of the present invention improves greatly; The described product of present embodiment can directly be handled the chemical emulsification oil that contains surfactant, is under the situation of 389mg/l at the water inlet oil-containing, and treated water outlet oil content is 0.55mg/l.

Claims (7)

1. the manufacture method of a bi-directional flow surface aggregate formula oil water separator comprises step
Oil water separator housing (1) 1. is set;
It is characterized in that:
2. described housing (1) is divided into three chambers, first chamber (6) and second chamber (7) are positioned at the top of the 3rd chamber (8) side by side, and the 3rd chamber (8) lower position sets out the mouth of a river (3); Described first chamber (6) and second chamber (7) top are communicated with oil catcher (4);
3. the acrylic short fiber after the surface modification is forced modifier treatment and made rope, be wrapped on the perforation chimney filter (51), make filter core (5) with this rope;
4. described filter core (5) is hung upside down at the end face of first chamber (6) respectively and be inserted on the below filter plate of second chamber (7), the perforation chimney filter (51) of first chamber (6) inner filter core (5) is communicated with the cavity space of second chamber (7) by self root water pipe connecting, and the perforation chimney filter (51) of this second chamber (7) inner filter core (5) is communicated with the 3rd chamber (8) by self root water pipe connecting again;
Step is forced modifier treatment to the acrylic short fiber after the surface modification described in 3., specifically may further comprise the steps successively:
A. the acrylic short fiber after 65mm~100mm is the long surface modification is made wool top, and this wool top was infiltrated in alkaline solution circulation immersion 60~90 seconds;
B. take off described wool top taking-up dried by dewaterer;
C. will take off the wool top shredding after doing, and put into and be preheating to 50 ℃~65 ℃ baking oven, and set oven temperature and be 90 ℃~96 ℃ this wool top forced modifier treatment 30 minutes~90 minutes;
D. it is standby to force four strands of wool tops after the modifier treatment to make rope.
2. the manufacture method of bi-directional flow surface aggregate formula oil water separator as claimed in claim 1 is characterized in that: the length of acrylic short fiber is 65mm in the described steps A.
3. the manufacture method of bi-directional flow surface aggregate formula oil water separator as claimed in claim 1 is characterized in that: the time that wool top soaks in alkaline solution described in the described steps A is 60 seconds.
4. the manufacture method of bi-directional flow surface aggregate formula oil water separator as claimed in claim 1 is characterized in that: the preheat temperature of baking oven described in the described step C is 65 ℃, sets oven temperature and is 95 ℃ described wool top forced modifier treatment 30 minutes.
5. the bi-directional flow surface aggregate formula oil water separator made of method according to claim 1 comprises housing (1), water inlet (2), delivery port (3) and oil catcher (4), it is characterized in that:
Comprise first chamber (6) arranged side by side and second chamber (7) in the described housing (1), and be positioned at the 3rd chamber (8) under described first chamber (6) and second chamber (7), the end face of first chamber (6) is hanging upside down filter core (5), is inserted with filter core (5) on the below filter plate of second chamber (7); The center of described filter core (5) is a perforation chimney filter (51), the medium that separates profit (52) that the acrylic short fiber after this perforation chimney filter (51) surface is coated with the process surface modification and forces modifier treatment is made; The top of described first chamber (6) and second chamber (7) is respectively arranged with the oil catcher (4) that is communicated with the cavity space of this first chamber (6) and second chamber (7); Described water inlet (2) is located at the bottom of first chamber (6), the perforation chimney filter (51) of first chamber (6) inner filter core (5) is communicated with the cavity space of second chamber (7) by self root water pipe connecting, the perforation chimney filter (51) of this second chamber (7) inner filter core (5) is communicated with the 3rd chamber (8) by self root water pipe connecting again, and delivery port (3) is located at the lower position of the 3rd chamber (8).
6. bi-directional flow surface aggregate formula oil water separator as claimed in claim 5, it is characterized in that: described three chambers (6,7,8) lateral surface all has door (11), described door (11) is fixing by screw rod and housing (1), near the screw rod place, be provided with sealing strip (12) between door (11) and the housing (1).
7. bi-directional flow surface aggregate formula oil water separator as claimed in claim 5 is characterized in that: the lower position of described the 3rd chamber (8) also is provided with sewage draining exit (9).
CNB2005100344999A 2005-04-29 2005-04-29 Bi-directional flow surface aggregate structure of oil water separator, and manufacturing method Expired - Fee Related CN100342940C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB2005100344999A CN100342940C (en) 2005-04-29 2005-04-29 Bi-directional flow surface aggregate structure of oil water separator, and manufacturing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB2005100344999A CN100342940C (en) 2005-04-29 2005-04-29 Bi-directional flow surface aggregate structure of oil water separator, and manufacturing method

Publications (2)

Publication Number Publication Date
CN1727030A CN1727030A (en) 2006-02-01
CN100342940C true CN100342940C (en) 2007-10-17

Family

ID=35926663

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB2005100344999A Expired - Fee Related CN100342940C (en) 2005-04-29 2005-04-29 Bi-directional flow surface aggregate structure of oil water separator, and manufacturing method

Country Status (1)

Country Link
CN (1) CN100342940C (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102101017B (en) * 2010-12-30 2012-12-05 武汉中舟环保设备有限公司 Method and device for separating emulsified oil
CN102689996A (en) * 2012-06-16 2012-09-26 付望新 Precise treatment device for purifying cutting fluid
CN104548665A (en) * 2014-12-02 2015-04-29 深圳市兰科环境技术有限公司 Extracted organic phase separating and recycling device and method
CN105214345B (en) * 2015-10-21 2017-03-08 宁波新能电器科技有限公司 A kind of oil water separator

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2370935Y (en) * 1999-04-12 2000-03-29 甘宪 Oil-water separator
CN2503960Y (en) * 2001-03-02 2002-08-07 北京华油惠博普科技有限公司 Plate channel type liquid distribution two-way flow thermal chemical separator
US6776820B2 (en) * 2001-07-10 2004-08-17 Praxair Technology, Inc. Integral hollow fiber membrane gas dryer and filtration device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2370935Y (en) * 1999-04-12 2000-03-29 甘宪 Oil-water separator
CN2503960Y (en) * 2001-03-02 2002-08-07 北京华油惠博普科技有限公司 Plate channel type liquid distribution two-way flow thermal chemical separator
US6776820B2 (en) * 2001-07-10 2004-08-17 Praxair Technology, Inc. Integral hollow fiber membrane gas dryer and filtration device

Also Published As

Publication number Publication date
CN1727030A (en) 2006-02-01

Similar Documents

Publication Publication Date Title
CN102730795B (en) High precision oil and water separation device and method thereof
CN100342940C (en) Bi-directional flow surface aggregate structure of oil water separator, and manufacturing method
CN200978683Y (en) Oil-filtering machine dedicated for full-automatic steam turbine oil
CN2832798Y (en) High-efficiency oil-removing reactor based on novel film materials
CN1853753A (en) Separating device
CN210505684U (en) Oil separator
CN108328867A (en) A kind of oily-water seperating equipment for oiliness sewage treatment
CN102397712B (en) Mobile oil-water separation device with floating oil absorber
CN213803045U (en) Petrochemical oil-water separation device
CN117088462A (en) Multistage centrifugal sewage treatment device
CN2892839Y (en) Light oil polluted water integrated processing apparatus
CN217895299U (en) Petrochemical oil-water separation device
CN216337089U (en) Adopt equipment of dull and stereotyped ceramic membrane processing emulsion waste water
CN203754654U (en) Diesel or gasoline dehydrator based on micro-nano fiber membrane
CN202968270U (en) Water treatment device of oil water separator
JP2007125507A (en) Method and apparatus for treating oil-containing waste water such as bilge waste water
CN207654759U (en) A kind of drainage type oil water separator
CN2897375Y (en) Efficient and high-pressure liquid-solid separator
CN204522501U (en) Closed self-skimming oil water separator
CN201470154U (en) On-line automatic backwash oil-water separation device
CN100448507C (en) Process for assistant chemical treatment of oil field sullage rotational flow
CN201880400U (en) Mobile oil-water separation device with oil slick absorber
CN2793053Y (en) High-efficient composite and spiral-flow purifier
CN211419879U (en) Oil field water treatment facilities
CN213294789U (en) A environmental protection purification unit for hyposmosis oil field reinjection water

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
ASS Succession or assignment of patent right

Owner name: LANKE ENVIRONMENT TECHNOLOGY CO., LTD., SHENZHEN

Free format text: FORMER OWNER: HONG CHUAN

Effective date: 20080314

C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20080314

Address after: Guangdong city of Shenzhen province Nanshan District Shekou along the mountain road 6 jialitai building the first floor

Patentee after: Shenzhen LAND ECO Environment Technology Co., Ltd.

Address before: Shenzhen, Guangdong, Nanshan District after the waves on the island 7-203

Patentee before: Hong Chuan

PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of invention: Bi-directional flow surface aggregate structure of oil water separator, and manufacturing method

Effective date of registration: 20141226

Granted publication date: 20071017

Pledgee: Shenzhen high tech investment and financing Company limited by guarantee

Pledgor: Shenzhen LAND ECO Environment Technology Co., Ltd.

Registration number: 2014990001140

PLDC Enforcement, change and cancellation of contracts on pledge of patent right or utility model
PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20180308

Granted publication date: 20071017

Pledgee: Shenzhen high tech investment and financing Company limited by guarantee

Pledgor: Shenzhen LAND ECO Environment Technology Co., Ltd.

Registration number: 2014990001140

PC01 Cancellation of the registration of the contract for pledge of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20071017

Termination date: 20210429

CF01 Termination of patent right due to non-payment of annual fee