CN109675810B - Multistage combination screening equipment - Google Patents
Multistage combination screening equipment Download PDFInfo
- Publication number
- CN109675810B CN109675810B CN201910154098.9A CN201910154098A CN109675810B CN 109675810 B CN109675810 B CN 109675810B CN 201910154098 A CN201910154098 A CN 201910154098A CN 109675810 B CN109675810 B CN 109675810B
- Authority
- CN
- China
- Prior art keywords
- screen
- frequency
- vibration
- driving device
- screen box
- 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.)
- Active
Links
- 238000012216 screening Methods 0.000 title claims abstract description 46
- 238000007599 discharging Methods 0.000 claims description 18
- 238000013016 damping Methods 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 2
- 230000009467 reduction Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 7
- 239000011345 viscous material Substances 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 20
- 239000010426 asphalt Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B9/00—Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B2201/00—Details applicable to machines for screening using sieves or gratings
- B07B2201/04—Multiple deck screening devices comprising one or more superimposed screens
Landscapes
- Combined Means For Separation Of Solids (AREA)
Abstract
The invention provides a multi-stage combined screening device, which comprises a supporting frame and is characterized in that: the invention combines the advantages of a circular vibrating screen and a high-frequency screen, has the characteristics of large yield, good screening effect, low energy consumption and the like, and can effectively solve the screening problem of special viscous materials.
Description
Technical Field
The invention relates to the field of screening equipment, in particular to multi-stage combined screening equipment.
Background
The screening machine is mechanical equipment used for separating various raw materials and various primary products into a plurality of grades according to the granularity of the materials through the actions of rotation, vibration, reciprocation, shaking and the like, or removing moisture, impurities and the like in the raw materials and the primary products, and then carrying out the next processing and improving the quality of the products. Screening machines are of a wide variety of types, often classified according to their structural and kinematic characteristics in the mineral processing industry.
The circular vibrating screen has the characteristics of high strength, high vibration strength, high yield, high screening efficiency, energy conservation, environmental protection, simplicity and convenience in use and maintenance and the like, and is widely applied to screening of sand, gravel, broken stone, coal mine, surface soil, construction waste and other materials at present. Under the action of the vibration exciter, the high-frequency screen drives the screen surface to vibrate at high frequency, has small amplitude and high frequency, is effective equipment for screening and classifying fine and viscous materials, and is widely used in the occasions such as mineral separation, coal separation, chemical industry, brick making and the like at present.
The circular vibrating screen has great advantages for coarse-grain and easily-screened materials; for fine-grained, sticky materials, high-frequency screens have great advantages, whereas for special material screening, it is often necessary to utilize both functions simultaneously, due to the level requirements. For example, recycling of asphalt reclaimed materials, coarse grain classification of more than 10mm after raw material crushing can be realized usually by circular vibration screening, and 0mm-5mm asphalt reclaimed materials are small in particle size, high in asphalt content and higher in viscosity, and then high-frequency screening or other special screening equipment is needed for screening, so that final screening cannot be realized by one screening machine.
Disclosure of Invention
The invention aims at overcoming the defects of the prior art and provides multi-stage combined screening equipment. The novel multistage combined vibration screening device combines the advantages of the circular vibration screen and the high-frequency screen, coarse materials easy to screen are screened through the circular vibration screen box, fine materials difficult to screen are screened through the high-frequency screen box, and the novel multistage combined vibration screening device has the characteristics of large yield, good screening effect, low energy consumption and the like, and can effectively solve the screening problem of special viscous materials.
The invention is realized by the following technical scheme with the attached drawings:
the utility model provides a multistage combination screening equipment, includes support frame, its characterized in that: including discharging device, accept the first screen box and the second screen box that set up from top to bottom in proper order, first screen box, second screen box all slope sets up on the support frame, discharging device sets up at first screen box, second screen box end and second screen box below, and first screen box is the circle sieve that shakes, and the second screen box is the high frequency screen.
Further, the second screen box comprises a plurality of layers of high-frequency screens which are arranged in a supporting mode up and down in sequence, and the discharging device is arranged below the bottom layer of high-frequency screen and at the tail end of each layer of high-frequency screen.
Further, the circular vibrating screen comprises a first shell, a first screen body arranged in the first shell and a first vibration damping device arranged between the first shell and the first screen body, wherein the first screen body comprises a first screen frame, a first screen mesh and a first driving device, the first screen mesh is arranged in the first screen frame, and the first screen mesh is driven by the first driving device to perform approximate circular motion.
Further, the high-frequency screen comprises a second shell, a second screen mesh arranged in the second shell, a second vibration damper and a high-frequency vibration exciter, wherein the high-frequency vibration exciter is arranged on the second shell and positioned below the second screen mesh to beat the screen mesh, the second vibration damper is arranged at the position on the second screen mesh where the high-frequency vibration exciter is beaten, the high-frequency vibration exciter comprises a second driving device, a frequency converter, a fixed sleeve, a connecting shaft supported between the fixed sleeves and parallel vibrating arms fixedly connected with the connecting shaft, a damper is arranged in the fixed sleeve, the two parallel vibrating arms are respectively arranged on two sides of the connecting shaft, a plurality of connecting rods are distributed between the two parallel vibrating arms, and the two parallel vibrating arms are driven in opposite directions by the second driving device to do small-amplitude high-frequency vibration through the connecting rods, so that vibration excitation motion is realized.
Further, the first vibration reduction device comprises a rubber spring, a metal spring or a composite spring.
Further, the second vibration damping device includes an elastic buffer member.
Further, the frequency converter controls the vibration frequency and amplitude of the second driving device to adjust the vibration frequency and swing amplitude of the two parallel vibrating arms.
Further, the first driving device and the second driving device comprise vibration motors or vibration exciters driven by motors or common motors.
Further, the discharging device is of an integrated or split structure, and the discharging channels are respectively corresponding to the layers.
The invention has the following beneficial effects:
1. the advantages of circular vibrating screen and high-frequency screen are realized on one screening device of the multi-stage combined screening device, when materials are screened, coarse materials easy to screen are screened through the circular vibrating screen box, fine materials difficult to screen are screened through the high-frequency screen box, and the multi-stage combined screening device has the characteristics of high yield, good screening effect, low energy consumption and the like, and can effectively solve the screening problem of special viscous materials.
2. The multistage combined screening device simultaneously realizes the advantages of the circular vibration screen and the high-frequency screen on one screening device, and can effectively save the arrangement space of the field, reduce the cost and improve the economic value when the product is applied.
3. The multistage combined screening equipment can adjust the frequency converter according to different material conditions, so that the second driving device provides proper frequency and knocking force, the problem that the viscous fine material blocks the screen is effectively solved, and the material screening effect is further improved; the frequency can also be kept fixed for a specific material situation, if the screening effect allows.
4. In the multistage combination screening equipment, the discharging device of integral type or split type structure can greatly reduce the dismouting degree of difficulty of equipment, and discharging device's stability when increasing equipment operation reduces the fault rate.
Drawings
The invention is described in further detail below with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of the main structure of the present invention;
FIG. 2 is a schematic view of a first screen box structure according to the present invention;
FIG. 3 is a schematic perspective view of a first screen according to the present invention;
FIG. 4 is a schematic view of a second screen box structure of the present invention;
FIG. 5 is a schematic perspective view of a second driving device according to the present invention;
fig. 6 is a schematic side view of a second driving device according to the present invention.
The label information in the figure is:
the screen box 1, the second screen box 2, the supporting frame 3, the discharging device 4, the first screen body 11, the first shell 12, the first vibration damping device 13, the high-frequency excitation device 21, the second screen 22, the second shell 23, the second vibration damping device 24, the first driving device 111, the first screen 112, the first screen frame 113, the frequency converter 211, the second driving device 212, the fixing sleeve 213, the parallel vibrating arms 214 and the connecting shaft 215.
Detailed Description
As shown in fig. 1-6, a multi-stage combined screening device comprises a supporting frame 3, a discharging device 4, a first screen box 1 and a second screen box 2 which are arranged in a vertically sequential manner, wherein the first screen box 1 and the second screen box 2 are obliquely arranged on the supporting frame 3, the discharging device 4 is arranged at the tail ends of the first screen box 1 and the second screen box 2 and below the second screen box 2, the first screen box 1 is a circular vibrating screen, and the second screen box 2 is a high-frequency screen.
The circular vibration screen comprises a first shell 12, a first screen body 11 arranged in the first shell 12 and a first vibration damper 13 arranged between the first shell 12 and the first screen body 11, wherein the first vibration damper 13 can be a rubber spring, a metal spring or a compound spring, the first screen body 11 comprises a first screen frame 113, a first screen 112 and a first driving device 111, the first screen 112 is arranged in the first screen frame 113, the first screen 112 is driven by the first driving device 111 to perform approximate circular motion, and the first driving device 111 can be a vibration motor or a vibration exciter driven by a common motor.
The second screen box 2 comprises a plurality of layers of high-frequency screens which are sequentially arranged in a bearing way up and down, and the discharging device 4 is arranged below the bottom layer of high-frequency screen and at the tail end of each layer of high-frequency screen. The high-frequency screen comprises a second shell 23, a second screen 22 arranged in the second shell 23, a second vibration damper 24 and a high-frequency vibration exciter 21, wherein the high-frequency vibration exciter 21 is arranged on the second shell 23 and positioned below the second screen 22 to beat the second screen 22, the second vibration damper 24 is arranged on the second screen 22 and is at a beating position of the high-frequency vibration exciter 21, and is an elastic buffer part such as a rubber buffer pad, the high-frequency vibration exciter 21 comprises a second driving device 212, a frequency converter 211, a fixed sleeve 213, a connecting shaft 215 supported between the fixed sleeves and parallel vibrating arms 214 fixedly connected with the connecting shaft, dampers are arranged in the fixed sleeve 213, the two parallel vibrating arms 214 are respectively arranged on two sides of the connecting shaft 215, a plurality of connecting rods are distributed between the two parallel vibrating arms 214, and the two parallel vibrating arms 214 are fixedly connected with the connecting shaft 215 through the connecting rods, and the second driving device 212 drives the two parallel vibrating arms 214 to do small-amplitude high-frequency swing in the opposite directions, so that the vibration exciting motion is realized, and the second driving device can be a vibrating motor or a vibration exciter driven by a common motor. The frequency converter 211 controls the vibration frequency and amplitude of the second driving device 212 to adjust the vibration frequency and the swing amplitude of the two parallel vibrating arms 214, and the frequency converter 211 can be adjusted according to different material conditions so that the second driving device 212 provides proper frequency and knocking force, the problem that the viscous fine material blocks the screen is effectively solved, and the material screening effect is further improved; the frequency can also be kept fixed for a specific material situation, if the screening effect allows.
Further, the discharging device 4 is of an integrated or split structure, and the discharging channels are respectively corresponding to the layers.
The foregoing description is only illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, i.e., the invention is not to be limited to the details of the claims and the description, but rather is to cover all modifications which are within the scope of the invention.
Claims (7)
1. The utility model provides a multistage combination screening equipment, includes support frame, its characterized in that: the device comprises a discharging device, a first screen box and a second screen box which are arranged in an up-down sequential manner, wherein the first screen box and the second screen box are obliquely arranged on a supporting frame, the discharging device is arranged at the tail ends of the first screen box and the second screen box and below the second screen box, the first screen box is a circular vibrating screen, and the second screen box is a high-frequency screen; the second screen box comprises a plurality of layers of high-frequency screens which are sequentially arranged in a bearing way up and down, and the discharging devices are arranged below the high-frequency screens at the bottom layer and at the tail ends of the other layers of high-frequency screens; the circular vibrating screen comprises a first shell, a first screen body arranged in the first shell and a first vibration damper arranged between the first shell and the first screen body, wherein the first screen body comprises a first screen frame, a first screen and a first driving device, the first screen is arranged in the first screen frame, and the first screen performs approximate circular motion under the driving of the first driving device; the high-frequency screen comprises a second shell, a second screen mesh arranged in the second shell, a second vibration damper and a high-frequency vibration exciter, wherein the high-frequency vibration exciter is arranged on the second shell and positioned below the screen mesh to beat the second screen mesh, the second vibration damper is arranged at the position on the second screen mesh where the high-frequency vibration exciter is beaten, the high-frequency vibration exciter comprises a second driving device, a frequency converter, a fixed sleeve, a connecting shaft supported between the fixed sleeves and parallel vibrating arms fixedly connected with the connecting shaft, a damper is arranged in the fixed sleeve, the two parallel vibrating arms are respectively arranged on two sides of the connecting shaft, a plurality of connecting rods are distributed between the two parallel vibrating arms, and the two parallel vibrating arms are driven by the second driving device in opposite directions to do small-amplitude high-frequency swing through the connecting rods and the connecting shaft.
2. A multi-stage combination screening apparatus according to claim 1, wherein: the first vibration reduction device comprises a rubber spring, a metal spring or a composite spring.
3. A multi-stage combination screening apparatus according to claim 1, wherein: the second vibration damping device includes an elastic buffer member.
4. A multi-stage combination screening apparatus according to claim 1, wherein: the frequency converter controls the vibration frequency and amplitude of the second driving device.
5. A multi-stage combination screening apparatus according to claim 1, wherein: the first driving device comprises a vibration motor or a vibration exciter driven by a common motor.
6. A multi-stage combination screening apparatus according to claim 1, wherein: the second driving device comprises a vibration motor or a vibration exciter driven by a common motor.
7. A multi-stage combination screening apparatus according to claim 1, wherein: the discharging device is of an integrated or split structure, and the discharging channels are respectively corresponding to the layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910154098.9A CN109675810B (en) | 2019-03-01 | 2019-03-01 | Multistage combination screening equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910154098.9A CN109675810B (en) | 2019-03-01 | 2019-03-01 | Multistage combination screening equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109675810A CN109675810A (en) | 2019-04-26 |
| CN109675810B true CN109675810B (en) | 2024-03-15 |
Family
ID=66197457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910154098.9A Active CN109675810B (en) | 2019-03-01 | 2019-03-01 | Multistage combination screening equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109675810B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110369270B (en) * | 2019-08-02 | 2021-08-10 | 苏州嘉诺环境工程有限公司 | Relaxation sieve |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1962088A (en) * | 2005-11-12 | 2007-05-16 | 鞍山市重型矿山机器厂 | Multi-unit combined vibration screen |
| JP2007130520A (en) * | 2005-11-08 | 2007-05-31 | Murakami Seiki Kosakusho:Kk | Oscillating screening device |
| CN201415187Y (en) * | 2009-06-19 | 2010-03-03 | 刘宗占 | Multi-amplitude vibrating screen |
| CN202621445U (en) * | 2012-05-25 | 2012-12-26 | 辽宁志远筛子王制造有限公司 | High-frequency magnetite powder vibration sieve |
| CN103934193A (en) * | 2014-04-22 | 2014-07-23 | 王海生 | Full-amplitude supporting high-frequency vibrating screen with variable tilt angle and elliptic track |
| CN108686929A (en) * | 2018-06-04 | 2018-10-23 | 唐山陆凯科技有限公司 | A kind of bilayer multifrequency complex vibration fine sizing equipment |
| CN208512974U (en) * | 2018-04-17 | 2019-02-19 | 唐山陆凯科技有限公司 | A kind of high frequency circular shale shaker |
| CN210187729U (en) * | 2019-03-01 | 2020-03-27 | 福建南方路面机械有限公司 | Multistage combination screening equipment |
-
2019
- 2019-03-01 CN CN201910154098.9A patent/CN109675810B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007130520A (en) * | 2005-11-08 | 2007-05-31 | Murakami Seiki Kosakusho:Kk | Oscillating screening device |
| CN1962088A (en) * | 2005-11-12 | 2007-05-16 | 鞍山市重型矿山机器厂 | Multi-unit combined vibration screen |
| CN201415187Y (en) * | 2009-06-19 | 2010-03-03 | 刘宗占 | Multi-amplitude vibrating screen |
| CN202621445U (en) * | 2012-05-25 | 2012-12-26 | 辽宁志远筛子王制造有限公司 | High-frequency magnetite powder vibration sieve |
| CN103934193A (en) * | 2014-04-22 | 2014-07-23 | 王海生 | Full-amplitude supporting high-frequency vibrating screen with variable tilt angle and elliptic track |
| CN208512974U (en) * | 2018-04-17 | 2019-02-19 | 唐山陆凯科技有限公司 | A kind of high frequency circular shale shaker |
| CN108686929A (en) * | 2018-06-04 | 2018-10-23 | 唐山陆凯科技有限公司 | A kind of bilayer multifrequency complex vibration fine sizing equipment |
| CN210187729U (en) * | 2019-03-01 | 2020-03-27 | 福建南方路面机械有限公司 | Multistage combination screening equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109675810A (en) | 2019-04-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109622359B (en) | Double-motor driven near-resonance nonlinear vibration relaxation sieve | |
| CN105396776A (en) | Novel dynamic separation sieve | |
| CN203044328U (en) | Flip-flop screen | |
| CN111112063A (en) | Double-mass vibrating screen with high screening efficiency | |
| CN210187729U (en) | Multistage combination screening equipment | |
| CN108686929B (en) | Double-deck multifrequency compound vibration fine grain screening equipment | |
| CN109675810B (en) | Multistage combination screening equipment | |
| CN108613519A (en) | A kind of adjustable straight line dewatering screen of sieve pore | |
| CN212189961U (en) | Suspension type dish coupling vibration screening machine | |
| CN107442401B (en) | Double-mass anti-resonance vibrating screen | |
| CN218637857U (en) | Double-frequency vibration screening device | |
| CN206373050U (en) | A kind of screening system screened for ore particles | |
| CN201044916Y (en) | Vibration motor type complex-frequency mesh-vibrating sieve | |
| CN205926301U (en) | Production refractory material's sieving mechanism | |
| CN205128383U (en) | Novel vibrating screen | |
| CN205085003U (en) | Circular vibrating screen equipment | |
| CN213792684U (en) | Compound double mass vibration screening equipment | |
| CN201482713U (en) | Laminated complex vibration high-frequency fine sieve | |
| CN109731780B (en) | Multifrequency vibration screening equipment | |
| CN207138271U (en) | A kind of double mass anti-resonance vibrating sifter | |
| CN208678533U (en) | A kind of straight line dewatering screen of easy adjustable screen slot size | |
| CN206897512U (en) | A kind of gravel crusher | |
| CN201625630U (en) | Circular vibrating screen | |
| CN206356249U (en) | A kind of material screening vibrating screen device | |
| CN206613705U (en) | A kind of sandstone vibratory sieve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 362000 Fujian province Quanzhou Fengze District High-tech Industrial Park Sports Street No. 700 Applicant after: Fujian Nanfang pavement machinery Co.,Ltd. Address before: 362000 Fujian province Quanzhou Fengze District High-tech Industrial Park Sports Street No. 700 Applicant before: FUJIAN SOUTH HIGHWAY MACHINERY Co.,Ltd. |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |