CN113374881A - Concrete discharge apparatus - Google Patents
Concrete discharge apparatus Download PDFInfo
- Publication number
- CN113374881A CN113374881A CN202110741027.6A CN202110741027A CN113374881A CN 113374881 A CN113374881 A CN 113374881A CN 202110741027 A CN202110741027 A CN 202110741027A CN 113374881 A CN113374881 A CN 113374881A
- Authority
- CN
- China
- Prior art keywords
- valve body
- channel
- concrete
- discharging device
- concrete discharging
- 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.)
- Pending
Links
- 238000007599 discharging Methods 0.000 claims abstract description 41
- 238000007789 sealing Methods 0.000 claims abstract description 24
- 235000011194 food seasoning agent Nutrition 0.000 claims abstract description 10
- 230000000149 penetrating effect Effects 0.000 claims abstract description 5
- 238000003780 insertion Methods 0.000 claims description 12
- 230000037431 insertion Effects 0.000 claims description 12
- 238000012856 packing Methods 0.000 claims description 9
- 230000000694 effects Effects 0.000 abstract description 8
- 238000005299 abrasion Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 5
- 125000003003 spiro group Chemical group 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910000617 Mangalloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/16—Discharge means, e.g. with intermediate storage of fresh concrete
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
- F16K3/312—Line blinds
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Reciprocating Pumps (AREA)
- Sliding Valves (AREA)
Abstract
The invention provides a concrete discharging device, which comprises a concrete seasoning device, wherein the concrete seasoning device comprises a valve body, a channel is arranged on the valve body in a penetrating way, an inserting channel which is arranged to intersect with the channel is also arranged in the valve body, one side of the inserting channel is provided with an opening, the concrete discharging device also comprises an inserting plate which is inserted in the inserting channel from the opening, and a driving rod which is arranged between the inserting plate and the valve body, the driving rod can drive the inserting plate to slide in an inserting groove to shield the channel and open the channel, the surface of the inserting plate is in sealing fit with the inner side surface of the inserting channel, the concrete circulation is controlled by the inserting plate in the valve body, the inserting plate is in sealing fit with the inserting channel, so that the sealing effect can be ensured, and the inserting plate is in surface contact with the inserting channel, so that the abrasion speed can be reduced, the service life is prolonged, and the matching mode between the inserting plate and the inserting channel is easier to take out and replace the inserting plate, the maintenance is convenient, and the sealing effect can be further ensured.
Description
Technical Field
The invention relates to the technical field of concrete discharging, in particular to a concrete discharging device.
Background
The wide application of commercial concrete, the discharge apparatus in the traditional commercial mixing and stirring building has various defects. For example, the abrasion of the abrasion part between the discharging device and the receiving device is quick, the sealing effect is poor, concrete slurry is leaked, the external environment is influenced, the cleaning workload is increased, the structure between the discharging device and the receiving device is complex, the replacement is complex, and the workload of maintenance personnel is large.
Disclosure of Invention
In view of the above problems, the present application provides a concrete discharging device to solve at least one technical problem of a discharging device in an existing commercial mixing and stirring building.
The invention provides a concrete discharging device which comprises a concrete seasoning device, wherein the concrete seasoning device comprises a valve body, a channel is arranged on the valve body in a penetrating manner, an inserting channel which is intersected with the channel is also arranged in the valve body, an opening is arranged on one side of the inserting channel, the concrete discharging device also comprises an inserting plate which is inserted in the inserting channel from the opening, and a driving rod which is arranged between the inserting plate and the valve body, the driving rod can drive the inserting plate to slide in an inserting groove to shield the channel and open the channel, and the surface of the inserting plate is in sealing fit with the inner side surface of the inserting channel.
Further, the valve body is including last valve body, well valve body and the lower valve body of range upon range of setting, it all is provided with circular through-hole, three on valve body, well valve body and the lower valve body to go up the circular through-hole connection and form the passageway, well valve body is last to have seted up blank, blank with blank exposes go up the surface formation of valve body, lower valve body the grafting passageway.
Furthermore, the positions, close to the opening, of the upper valve body and the lower valve body are all provided with strip-shaped slotted holes in a through mode, the strip-shaped slotted holes are arranged along the direction perpendicular to the inserting direction of the inserting plates, packing is arranged in the strip-shaped slotted holes, and packing boxes are arranged on the strip-shaped slotted hole in an upper cover mode.
Further, center on the valve body center on the blank region reaches circular through-hole even interval is provided with a plurality of locating pins, all be provided with on last valve body, the lower valve body with a plurality of locating pin one-to-one a plurality of locating pin holes of locating pin, every the locating pin all can penetrate go up the valve body, correspond on the lower valve body and set up the locating pin is downthehole.
Further, the driving rod is arranged between the middle valve body and the plug board.
Furthermore, the driving rods are provided with two, and the two driving rods are symmetrically arranged relative to the inserting channel.
Furthermore, a circular sealing groove is formed in the face, back to back, of the upper valve body and the middle valve body, the circular sealing groove and the channel are coaxially arranged, and a flexible sealing ring and a rigid sealing ring are sequentially arranged in the circular sealing groove.
Further, the concrete discharging device comprises a hopper and a concrete discharging pipe, wherein a discharging hole is formed in the lower portion of the hopper, the valve body is arranged below the hopper, the discharging hole is communicated with the channel, and the concrete discharging pipe is arranged below the valve body.
The application provides a concrete discharge apparatus has following beneficial effect:
1. through setting up the valve body, set up between discharge apparatus and the material receiving device through the valve body, thereby can control the concrete circulation through the plugboard in the valve body, and for sealed cooperation between plugboard and the grafting passageway, thereby can guarantee sealed effect, and be surface contact between plugboard and the grafting passageway, thereby can reduce the rate of wear, and improve life, and the cooperation mode between plugboard and the grafting passageway is changeed and is taken out the change to the plugboard, be convenient for maintain, sealed effect of assurance that can also be further.
2. Through setting up the valve body to form by the mode that three valve body range upon range of setting up about in, can reduce the processing degree of difficulty of grafting passageway, can also use one section grafting passageway internal wear back can be selective change three valve body about in to can practice thrift cost of maintenance.
3. Through setting up the bar slotted hole and set up the packing in the bar slotted hole to can carry out sealed cooperation through packing and plugboard, renew the sealed effect of one step of improvement plugboard and valve body.
4. Through set up locating pin axle on well valve body, correspond to set up the locating pin hole on upper and lower valve body to can fix a position through locating pin hole and locating pin axle after dismantling the valve body, guarantee the assembly precision, improve assembly speed.
5. Through set up the seal groove on last valve body, set up the double-deck of flexible sealing washer and rigid seal circle in the seal groove and seal, can guarantee the sealed effect between valve body and the hopper, reach concrete material solid and liquid homoenergetic and reliably seal.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings.
Fig. 1 is a schematic overall structure diagram of a concrete discharging device provided by the invention.
Fig. 2 is an exploded schematic view of a concrete discharging device provided by the invention.
Fig. 3 is a schematic structural diagram of a concrete seasoning device in the concrete discharging device provided by the invention.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
The invention provides a concrete discharging device, and particularly relates to a concrete discharging device, as a specific implementation manner, with reference to fig. 1-3, the device comprises a concrete seasoning device 1, wherein the concrete seasoning device 1 comprises a valve body 10, a channel 101 is arranged on the valve body 10 in a penetrating manner, an inserting channel 102 intersecting with the channel 101 is further arranged in the valve body 10, an opening 103 is arranged on one side of the inserting channel 102, the device also comprises an inserting plate 104 inserted into the inserting channel 102 from the opening 103, and a driving rod 2 arranged between the inserting plate 104 and the valve body 10, the driving rod 2 can drive the inserting plate 104 to slide in the inserting groove to shield the channel 101 and open the channel, and the surface of the inserting plate 104 is in sealing fit with the inner side surface of the inserting channel 102.
Further, referring to fig. 1-2, the device further comprises a hopper 4 and a concrete discharging pipe 5, wherein a discharging hole 41 is formed in the lower portion of the hopper, the valve body 10 is arranged below the hopper 4, the discharging hole 41 is communicated with the channel 101, and the concrete discharging pipe 5 is arranged below the valve body 10.
Specifically, refer to fig. 1, fig. 2, when using, through setting up the valve body 10 in the hopper below, the concrete discharge pipe sets up the below at the valve body, be linked together with the material receiving device through the concrete discharge pipe, thereby can adjust the circulation of concrete and the size of flow through concrete seasoning device 1, when using, thereby control plugboard 104 and slide in grafting passageway 102 through the flexible of control actuating lever 2, thereby can control the plugboard and shelter from passageway 101, then the concrete can not flow from passageway 101, and be sealed cooperation between plugboard and the grafting passageway, consequently can effectually seal the concrete, avoid mud to ooze from the valve body, when needs derive the concrete, slide through actuating lever 2 drive plugboard, thereby open passageway 102, can also adjust the flow of concrete through the aperture size of opening passageway 102.
Further, referring to fig. 3, as a preferred embodiment, the valve body 10 includes an upper valve body 10a, a middle valve body 10b and a lower valve body 10c which are stacked, circular through holes 101a are respectively disposed on the upper valve body 10a, the middle valve body 10b and the lower valve body 10c, the three circular through holes 101a are connected to form the channel 101, a blank area 102a is disposed on the middle valve body 10b, and the surfaces of the upper valve body and the lower valve body exposed from the blank area 102a and the blank area form the insertion channel 102.
Furthermore, the positions of the upper valve body 10a and the lower valve body 10c close to the opening 103 are all provided with a strip-shaped groove hole 104 in a through manner, the strip-shaped groove hole 104 is arranged along the insertion direction perpendicular to the insertion plate 104, a packing 3 is arranged in the strip-shaped groove hole 104, and a packing box 31 is arranged on the upper cover of the strip-shaped groove hole 104.
Specifically, the upper valve body 10a, the middle valve body 10b and the lower valve body 10c are all plate-shaped structures, referring to fig. 3, a plurality of first through holes which are in one-to-one correspondence and a plurality of blind holes which are in one-to-one correspondence are arranged on the upper valve body 10a and the lower valve body 10c around the channel 101, the vertical projection of the first through holes on the middle valve body is not overlapped with the plugging channel, the vertical projection of the blind holes on the middle valve body is located in the area of the plugging channel, the blind holes are threaded holes, the circle centers of the blind holes and the through holes are both located on the circumference which is coaxial with the channel 101, the second through holes are arranged on the two sides of the plugging channel on the upper valve body 10a and the middle valve body, the threaded holes which are in one-to-one correspondence with the second through holes are arranged on the lower valve body, when the upper valve body 10a, the middle valve body 10b and the lower valve body 10c are connected in the threaded holes by a screw rod penetrating the second through holes and then being screwed into the threaded holes, then pass the flange hole on the hopper, go up the flange hole on valve body 10a, well valve body 10b and the lower valve body 10c in proper order and the flange hole on concrete discharging pipe 5 through grafting screw rod 114, then stretch out the tip spiro union fixation nut 115 of concrete discharging pipe 5 at grafting screw rod 114 to set up the valve body between concrete discharging pipe 5 and hopper, then pass the flange hole of concrete discharging pipe 5 through the screw rod with the blind hole 111 of screw rod spiro union on the lower valve body, pass the flange hole spiro union on the hopper through the screw rod in the blind hole 111 on the upper valve body, accomplish the process of fixing valve body, concrete discharging pipe 5 on the hopper.
Further, referring to fig. 3, a plurality of positioning pins 14 are uniformly arranged on the middle valve body 10b around the blank area 102a and the circular through hole 101a at intervals, a plurality of positioning pin holes corresponding to the plurality of positioning pins 14 are respectively arranged on the upper valve body 10a and the lower valve body 10c, and each positioning pin can penetrate into the corresponding positioning pin hole on the upper valve body 10a and the lower valve body 10 c. Through set up locating pin axle on well valve body, correspond to set up the locating pin hole on upper and lower valve body to can fix a position through locating pin hole and locating pin axle after dismantling the valve body, guarantee the assembly precision, improve assembly speed.
Further, referring to fig. 3, the driving rod 2 is disposed between the middle valve body 10b and the insertion plate 104.
Further, the two driving rods 2 are provided, and the two driving rods are symmetrically arranged about the insertion channel 102.
Referring to fig. 3, the middle valve body is located two first hinge lugs 112 are symmetrically arranged on two sides of the plug channel, hinge holes are formed in the first hinge lugs 112, dry bushings are arranged in the hinge holes, two second lugs are symmetrically arranged on one side, away from the channel 101, of the plug board relative to the plug channel, hinge holes and the dry bushings are also formed in the second lugs, the driving rod is preferably a hydraulic rod, two ends of the hydraulic rod are hinged to the first hinge lugs 112 and the second hinge lugs through hinge pins, the driving rod can be conveniently detached through the arrangement mode, and the plug board is further convenient to disassemble.
Further, go up valve body 10a with be provided with circular seal groove 16 on the one side that well valve body 10b carried on the back mutually, circular seal groove 16 with the coaxial setting of passageway 101, flexible sealing ring 17 and rigid seal 18 have set gradually in the circular seal groove 16, and double-deck through setting up flexible sealing ring and rigid seal in the seal groove is sealed, can guarantee the sealed effect between valve body and the hopper, reaches concrete material solid and liquid homoenergetic and reliably seals, and wherein the flexible sealing ring can select for use rubber seal ring, the rigid seal ring that field commonly used for sealing washer, the sealing washer that the rigid seal ring can select for use the metal material to make, for example use the packing ring that materials such as stainless steel, carbon steel made.
Specifically, the insertion plate, the upper valve body 10a, the middle valve body 10b and the lower valve body 10c can be made of wear-resistant plates, for example, manganese steel plates can be used, so that the wear resistance can be improved, and the service life can be prolonged.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (8)
1. A concrete discharging device is characterized by comprising a concrete seasoning device (1), the concrete seasoning device (1) comprises a valve body (10), a channel (101) is arranged on the valve body (10) in a penetrating way, an inserting channel (102) which is intersected with the channel (101) is also arranged in the valve body (10), an opening (103) is arranged on one side of the insertion channel (102), the valve further comprises an insertion plate (104) inserted into the insertion channel (102) from the opening (103), and a driving rod (2) arranged between the insertion plate (104) and the valve body (10), the driving rod (2) can drive the plug board (104) to slide in the plug groove so as to shield the channel (101) and open the channel, the surface of the plug board (104) is in sealing fit with the inner side surface of the plug channel (102).
2. The concrete discharging device according to claim 1, wherein the valve body (10) comprises an upper valve body (10 a), a middle valve body (10 b) and a lower valve body (10 c) which are arranged in a stacked manner, circular through holes (101 a) are formed in the upper valve body (10 a), the middle valve body (10 b) and the lower valve body (10 c), the three circular through holes (101 a) are connected to form the channel (101), a blank area (102 a) is formed in the middle valve body (10 b), and the insertion channel (102) is formed by the blank area (102 a) and the surfaces of the upper valve body and the lower valve body exposed from the blank area.
3. The concrete discharging device according to claim 2, wherein a slotted hole (105) penetrates through the positions, close to the opening (103), of the upper valve body (10 a) and the lower valve body (10 c), the slotted hole (105) is arranged along the inserting direction perpendicular to the inserting plate (104), a packing (3) is arranged in the slotted hole (105), and a packing box (31) is arranged on the upper cover of the slotted hole (105).
4. The concrete discharging device according to claim 2, wherein a plurality of positioning pins (14) are uniformly arranged on the middle valve body (10 b) at intervals around the blank space (102 a) and the circular through hole (101 a), a plurality of positioning pin holes corresponding to the positioning pins (14) are respectively arranged on the upper valve body (10 a) and the lower valve body (10 c), and each positioning pin can penetrate into the corresponding positioning pin hole on the upper valve body (10 a) and the lower valve body (10 c).
5. A concrete discharging device according to claim 4, wherein said driving rod (2) is arranged between said central valve body (10 b) and said insertion plate (104).
6. A concrete discharging device according to claim 5, wherein there are two driving rods (2), and the two driving rods are symmetrically arranged with respect to the inserting channel (102).
7. The concrete discharging device according to claim 6, wherein a circular sealing groove (16) is formed in the surface, opposite to the middle valve body (10 b), of the upper valve body (10 a), the circular sealing groove (16) is coaxial with the channel (101), and a flexible sealing ring (17) and a rigid sealing ring (18) are sequentially arranged in the circular sealing groove (16).
8. A concrete discharging device according to claim 1, further comprising a hopper (4) and a concrete discharging pipe (5), wherein a discharging port (41) is provided at the lower part of the hopper, the valve body (10) is arranged below the hopper (4) and the discharging port (41) is communicated with the passage (101), and the concrete discharging pipe (5) is arranged below the valve body (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110741027.6A CN113374881A (en) | 2021-07-01 | 2021-07-01 | Concrete discharge apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110741027.6A CN113374881A (en) | 2021-07-01 | 2021-07-01 | Concrete discharge apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113374881A true CN113374881A (en) | 2021-09-10 |
Family
ID=77580341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110741027.6A Pending CN113374881A (en) | 2021-07-01 | 2021-07-01 | Concrete discharge apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113374881A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201391624Y (en) * | 2009-02-11 | 2010-01-27 | 中国石油天然气管道局 | Pipe plugging sandwich valve |
| CN101890761A (en) * | 2010-06-30 | 2010-11-24 | 三一重工股份有限公司 | Blanking adjustable discharging hopper device and concrete batch plant applying same |
| CN201954020U (en) * | 2011-01-13 | 2011-08-31 | 北京首钢国际工程技术有限公司 | Blocking-free gate valve |
| CN202176733U (en) * | 2011-08-04 | 2012-03-28 | 王为 | Dual-layer airtight gate valve device |
| JP2017187112A (en) * | 2016-04-06 | 2017-10-12 | 東都電機工業株式会社 | Device for opening and closing shutter |
| CN207989774U (en) * | 2018-01-19 | 2018-10-19 | 永嘉一核自控阀门有限公司 | A kind of ceramic gate valve |
| CN210344361U (en) * | 2019-08-08 | 2020-04-17 | 德阳东飞机械设备有限公司 | Hydraulic door opening and closing device for storage material gathering hopper door |
-
2021
- 2021-07-01 CN CN202110741027.6A patent/CN113374881A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201391624Y (en) * | 2009-02-11 | 2010-01-27 | 中国石油天然气管道局 | Pipe plugging sandwich valve |
| CN101890761A (en) * | 2010-06-30 | 2010-11-24 | 三一重工股份有限公司 | Blanking adjustable discharging hopper device and concrete batch plant applying same |
| CN201954020U (en) * | 2011-01-13 | 2011-08-31 | 北京首钢国际工程技术有限公司 | Blocking-free gate valve |
| CN202176733U (en) * | 2011-08-04 | 2012-03-28 | 王为 | Dual-layer airtight gate valve device |
| JP2017187112A (en) * | 2016-04-06 | 2017-10-12 | 東都電機工業株式会社 | Device for opening and closing shutter |
| CN207989774U (en) * | 2018-01-19 | 2018-10-19 | 永嘉一核自控阀门有限公司 | A kind of ceramic gate valve |
| CN210344361U (en) * | 2019-08-08 | 2020-04-17 | 德阳东飞机械设备有限公司 | Hydraulic door opening and closing device for storage material gathering hopper door |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210910 |
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| RJ01 | Rejection of invention patent application after publication |