CN221906217U - Counterflow spray tower - Google Patents
Counterflow spray tower Download PDFInfo
- Publication number
- CN221906217U CN221906217U CN202323546306.0U CN202323546306U CN221906217U CN 221906217 U CN221906217 U CN 221906217U CN 202323546306 U CN202323546306 U CN 202323546306U CN 221906217 U CN221906217 U CN 221906217U
- Authority
- CN
- China
- Prior art keywords
- fixed
- spray tower
- wall
- movable plate
- pipe body
- 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
- 239000007921 spray Substances 0.000 title claims abstract description 31
- 238000007789 sealing Methods 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000009434 installation Methods 0.000 claims description 15
- 230000017105 transposition Effects 0.000 claims description 11
- 239000002912 waste gas Substances 0.000 abstract description 14
- 238000000034 method Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 14
- 238000004140 cleaning Methods 0.000 description 5
- 238000001914 filtration Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 101001121408 Homo sapiens L-amino-acid oxidase Proteins 0.000 description 1
- 101000827703 Homo sapiens Polyphosphoinositide phosphatase Proteins 0.000 description 1
- 102100026388 L-amino-acid oxidase Human genes 0.000 description 1
- 102100023591 Polyphosphoinositide phosphatase Human genes 0.000 description 1
- 101100012902 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) FIG2 gene Proteins 0.000 description 1
- 101100233916 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) KAR5 gene Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000002440 industrial waste Substances 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
- 238000000746 purification Methods 0.000 description 1
- 238000011403 purification operation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
Description
技术领域Technical Field
本实用新型涉及喷淋塔技术领域,具体为一种逆流式喷淋塔。The utility model relates to the technical field of spray towers, in particular to a countercurrent spray tower.
背景技术Background Art
逆流式喷淋塔是一种工业废气处理设备,它通常用于去除废气中的有害物质。其工作原理是利用喷淋液与废气逆流接触,将废气中的有害物质吸收或洗涤下来,从而实现净化废气的目的。The countercurrent spray tower is an industrial waste gas treatment equipment, which is usually used to remove harmful substances in the waste gas. Its working principle is to use the spray liquid to contact the waste gas in countercurrent to absorb or wash away the harmful substances in the waste gas, thereby achieving the purpose of purifying the waste gas.
经检索,申请号为CN202310244668.X公开了一种废气处理专用喷淋塔的发明专利,其在废气进管一侧安装有滤网,能够在废气进入喷淋塔内部前对废气进行初步过滤,以便后续对废气进行净化处理,但是该喷淋塔在使用一段时间后,其设置的滤网表面常常会堆积大量的灰尘杂质,对滤网表面的网孔内部造成堵塞,进而导致废气无法快速进入喷淋塔内,使得工作人员需要定期将滤网拆下进行清理,在拆卸清理的过程中,工作人员便需要对该喷淋塔进行临时关闭,不方便对后续废气进行过滤净化操作,降低了生产效率。After searching, the application number CN202310244668.X discloses an invention patent for a special spray tower for waste gas treatment, in which a filter is installed on one side of the waste gas inlet pipe, which can perform preliminary filtering of the waste gas before the waste gas enters the spray tower so as to purify the waste gas subsequently. However, after the spray tower has been used for a period of time, a large amount of dust and impurities will often accumulate on the surface of the filter, causing blockage inside the mesh holes on the surface of the filter, which in turn causes the waste gas to be unable to quickly enter the spray tower, requiring staff to regularly remove the filter for cleaning. During the disassembly and cleaning process, the staff needs to temporarily close the spray tower, which is inconvenient for subsequent filtering and purification operations of the waste gas, reducing production efficiency.
实用新型内容Utility Model Content
本实用新型的目的在于提供一种逆流式喷淋塔,以解决上述背景技术中所提出的问题,使得该喷淋塔可以立即对废气进行过滤净化工作,并且将另一块滤网拆下进行清理,以便后续继续切换使用,提高了生产效率。The purpose of the utility model is to provide a countercurrent spray tower to solve the problems raised in the above-mentioned background technology, so that the spray tower can immediately filter and purify the exhaust gas, and the other filter can be removed for cleaning so as to continue to switch and use it later, thereby improving production efficiency.
为实现上述目的,本实用新型提供如下技术方案:一种逆流式喷淋塔,包括塔身以及固定在塔身前侧的水箱,还包括:To achieve the above object, the utility model provides the following technical solution: a countercurrent spray tower, comprising a tower body and a water tank fixed on the front side of the tower body, and also comprising:
连通在塔身左侧下方的进气管本体,且进气管本体的顶部固定有安装盒,所述安装盒的左侧铰接有密封门,所述安装盒内部的左右两侧均设置有活动板,所述进气管本体顶部的左右两侧均开设有固定槽,且活动板与固定槽的内壁滑动连接;An air intake pipe body is connected to the lower left side of the tower body, and a mounting box is fixed on the top of the air intake pipe body, a sealing door is hinged on the left side of the mounting box, movable plates are arranged on the left and right sides of the interior of the mounting box, and fixing grooves are arranged on the left and right sides of the top of the air intake pipe body, and the movable plates are slidably connected to the inner wall of the fixing groove;
设置在安装盒内部下方的换位结构,所述换位结构包括齿条板和齿轮,所述齿条板固定在活动板相向一侧表面的前后方,所述齿轮转动连接在安装盒内壁前后两侧的下方,且齿轮与齿条板之间相啮合,所述活动板的表面开设有放置槽,且放置槽的内部放置有滤网本体。A transposition structure is arranged at the lower part of the interior of the installation box, and the transposition structure includes a rack plate and a gear. The rack plate is fixed at the front and rear of the surface of the movable plate on the opposite side, and the gear is rotatably connected at the lower part of the front and rear sides of the inner wall of the installation box, and the gear is meshed with the rack plate. A placement groove is opened on the surface of the movable plate, and the filter body is placed inside the placement groove.
优选的,所述换位结构还包括固定在安装盒背面下方的电机以及固定在齿轮之间的连接杆,所述电机的输出轴贯穿安装盒并与后方的齿轮固定连接。Preferably, the transposition structure further comprises a motor fixed at the lower back of the installation box and a connecting rod fixed between the gears, and the output shaft of the motor passes through the installation box and is fixedly connected to the gears at the rear.
优选的,所述安装盒内壁前后两侧的左右方均开设有导向槽,所述活动板前后两侧的顶部均固定有与导向槽内壁滑动连接的导向块。Preferably, guide grooves are provided on the left and right sides of the front and rear inner walls of the installation box, and guide blocks slidably connected to the inner walls of the guide grooves are fixed to the tops of the front and rear sides of the movable plate.
优选的,所述活动板左侧的表面且位于放置槽上下两侧的前后方均开设有卡槽,所述滤网本体上下两侧的前后方均固定有卡块,且卡块与卡槽的内壁卡接,所述卡块的长度小于卡槽内壁的长度。Preferably, a card slot is provided on the surface of the left side of the movable plate and on the front and rear sides of the upper and lower sides of the placement slot, and a card block is fixed on the front and rear sides of the upper and lower sides of the filter body, and the card block is carded with the inner wall of the card slot, and the length of the card block is less than the length of the inner wall of the card slot.
优选的,所述进气管本体内部左侧活动板表面滤网本体顶部的高度大于进气管本体内壁顶部的高度。Preferably, the height of the top of the filter body on the surface of the left movable plate inside the air intake pipe body is greater than the height of the top of the inner wall of the air intake pipe body.
优选的,所述进气管本体内壁底部的左右两侧均开设有定位槽,所述活动板的底部固定有定位块,所述定位块与定位槽的内壁滑动连接。Preferably, positioning grooves are provided on both left and right sides of the bottom of the inner wall of the air intake pipe body, and a positioning block is fixed to the bottom of the movable plate, and the positioning block is slidably connected to the inner wall of the positioning groove.
与现有技术相比,本实用新型的有益效果如下:Compared with the prior art, the beneficial effects of the utility model are as follows:
本实用新型内部设置有双滤网,该喷淋塔通过单个滤网对废气进行过滤,当滤网表面网孔出现严重堵塞需要废气输送时,该喷淋塔则可以自动对两块滤网位置进行切换,使得该喷淋塔可以立即对废气进行过滤净化工作,而工作人员可以在喷淋塔正常运行的过程中,将另一块滤网拆下进行清理,以便后续继续切换使用,提高了生产效率。The utility model is provided with double filters inside, and the spray tower filters the exhaust gas through a single filter. When the mesh holes on the surface of the filter are seriously clogged and the exhaust gas needs to be transported, the spray tower can automatically switch the positions of the two filters, so that the spray tower can immediately filter and purify the exhaust gas. During the normal operation of the spray tower, the staff can remove the other filter for cleaning so that it can be switched for subsequent use, thereby improving production efficiency.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
图1为本实用新型的立体结构示意图;FIG1 is a schematic diagram of the three-dimensional structure of the utility model;
图2为本实用新型中进气管本体的剖面图;FIG2 is a cross-sectional view of the air intake pipe body of the present invention;
图3为本实用新型中进气管本体的剖面图;FIG3 is a cross-sectional view of the air intake pipe body of the present invention;
图4为本实用新型中换位结构的立体示意图;FIG4 is a perspective schematic diagram of a transposition structure in the present invention;
图5为本实用新型中滤网本体拆卸时的立体示意图。FIG. 5 is a three-dimensional schematic diagram of the utility model when the filter body is disassembled.
图中:1、塔身;2、水箱;3、进气管本体;4、安装盒;5、密封门;6、活动板;7、固定槽;8、换位结构;81、齿条板;82、齿轮;83、电机;84、连接杆;9、放置槽;10、滤网本体;11、导向块;12、导向槽;13、卡槽;14、卡块;15、定位块;16、定位槽。In the figure: 1. tower body; 2. water tank; 3. air inlet pipe body; 4. installation box; 5. sealing door; 6. movable plate; 7. fixing groove; 8. transposition structure; 81. rack plate; 82. gear; 83. motor; 84. connecting rod; 9. placement groove; 10. filter body; 11. guide block; 12. guide groove; 13. clamping groove; 14. clamping block; 15. positioning block; 16. positioning groove.
具体实施方式DETAILED DESCRIPTION
下面将结合本实用新型实施例中的附图,对本实用新型实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本实用新型一部分实施例,而不是全部的实施例。基于本实用新型中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本实用新型保护的范围。The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
请参阅图1-5所示,一种逆流式喷淋塔,包括塔身1和水箱2,水箱2固定在塔身1前侧的下方,塔身1左侧的下方连通有进气管本体3,且进气管本体3的顶部固定有安装盒4,安装盒4的左侧铰接有密封门5,安装盒4内部的左右两侧均设置有活动板6,进气管本体3顶部的左右两侧均开设有固定槽7,且活动板6与固定槽7的内壁滑动连接,安装盒4内部左右两侧的活动板6高度不同,左侧活动板6底部延伸至进气管本体3的内部,安装盒4内部的下方设置有换位结构8,换位结构8包括齿条板81和齿轮82,齿条板81固定在活动板6相向一侧表面的前后方,齿轮82转动连接在安装盒4内壁前后两侧的下方,且齿轮82与齿条板81之间相啮合,活动板6的表面开设有放置槽9,且放置槽9的内部放置有滤网本体10。Please refer to Figures 1-5, a countercurrent spray tower includes a tower body 1 and a water tank 2, the water tank 2 is fixed at the lower part of the front side of the tower body 1, the lower part of the left side of the tower body 1 is connected with an air intake pipe body 3, and a mounting box 4 is fixed on the top of the air intake pipe body 3, a sealing door 5 is hinged on the left side of the mounting box 4, and movable plates 6 are arranged on the left and right sides of the inside of the mounting box 4, and fixed grooves 7 are opened on the left and right sides of the top of the air intake pipe body 3, and the movable plates 6 are slidably connected to the inner wall of the fixed groove 7, and the left and right sides of the inside of the mounting box 4 are provided with a sealing door 5. The movable plates 6 on the sides have different heights. The bottom of the left movable plate 6 extends to the inside of the air intake pipe body 3. A transposition structure 8 is provided at the bottom of the interior of the mounting box 4. The transposition structure 8 includes a rack plate 81 and a gear 82. The rack plate 81 is fixed at the front and rear sides of the opposite surface of the movable plate 6. The gear 82 is rotatably connected at the bottom of the front and rear sides of the inner wall of the mounting box 4, and the gear 82 is meshed with the rack plate 81. A placement groove 9 is provided on the surface of the movable plate 6, and a filter body 10 is placed inside the placement groove 9.
换位结构8还包括电机83和连接杆84,电机83固定在安装盒4背面的下方,且电机83的输出轴贯穿安装盒4并与后方的齿轮82固定连接,连接杆84设置在齿轮82之间,且连接杆84与齿轮82之间固定连接,安装盒4内壁前后两侧的左右方均开设有导向槽12,活动板6前后两侧的顶部均固定有导向块11,且导向块11的一侧延伸至导向槽12的内部并与导向槽12的内壁滑动连接,工作人员将电机83打开后,电机83的输出轴则会带动后方的齿轮82旋转,通过连接杆84使得前后两侧的齿轮82同时转动,当左侧活动板6上升时,右侧的活动板6则会下降,导向块11在导向槽12的内部滑动,对活动板6进行导向,完成对两块滤网本体10之间的位置切换。The transposition structure 8 also includes a motor 83 and a connecting rod 84. The motor 83 is fixed at the bottom of the back of the installation box 4, and the output shaft of the motor 83 passes through the installation box 4 and is fixedly connected to the gear 82 at the rear. The connecting rod 84 is arranged between the gears 82, and the connecting rod 84 is fixedly connected to the gear 82. Guide grooves 12 are provided on the left and right sides of the front and rear sides of the inner wall of the installation box 4. Guide blocks 11 are fixed to the tops of the front and rear sides of the movable plate 6, and one side of the guide block 11 extends to the inside of the guide groove 12 and is slidably connected to the inner wall of the guide groove 12. After the staff turns on the motor 83, the output shaft of the motor 83 will drive the rear gear 82 to rotate, and the gears 82 on the front and rear sides will rotate at the same time through the connecting rod 84. When the left movable plate 6 rises, the right movable plate 6 will fall, and the guide block 11 slides inside the guide groove 12 to guide the movable plate 6, thereby completing the position switching between the two filter bodies 10.
活动板6左侧的表面且位于放置槽9上下两侧的前后方均开设有卡槽13,滤网本体10上下两侧的前后方均固定有卡块14,且卡块14与卡槽13的内壁卡接,卡块14的长度小于卡槽13内壁的长度,当工作人员需要将堵塞的滤网本体10取下进行清理时,仅需要将手指放入卡块14与卡槽13内壁的间隙处并扣动,便可以将滤网本体10从固定槽7内部取下,完成拆卸操作。The surface of the left side of the movable plate 6 and the front and rear sides of the upper and lower sides of the placement groove 9 are provided with card slots 13, and the front and rear sides of the upper and lower sides of the filter body 10 are fixed with card blocks 14, and the card blocks 14 are carded with the inner walls of the card slots 13. The length of the card block 14 is less than the length of the inner wall of the card slot 13. When the staff needs to remove the blocked filter body 10 for cleaning, they only need to put their fingers into the gap between the card block 14 and the inner wall of the card slot 13 and press it, so that the filter body 10 can be removed from the inside of the fixed groove 7 to complete the disassembly operation.
进气管本体3内部左侧活动板6表面滤网本体10顶部的高度大于进气管本体3内壁顶部的高度,由于滤网本体10仅依靠卡块14对滤网本体10进行固定,为了避免滤网本体10进入进气管本体3内部后,废气流动使得滤网本体10发生松动,进而设计将滤网本体10顶部延伸至固定槽7内部,通过固定槽7来对左侧活动板6表面的滤网本体10进行遮挡,使得滤网本体10不会发生松动情况,以便后续对废气进行初步过滤处理。The height of the top of the filter body 10 on the surface of the left movable plate 6 inside the intake pipe body 3 is greater than the height of the top of the inner wall of the intake pipe body 3. Since the filter body 10 is fixed only by the block 14, in order to prevent the filter body 10 from loosening due to the flow of exhaust gas after the filter body 10 enters the intake pipe body 3, the top of the filter body 10 is designed to extend to the inside of the fixing groove 7, and the filter body 10 on the surface of the left movable plate 6 is blocked by the fixing groove 7, so that the filter body 10 will not loosen, so as to facilitate the subsequent preliminary filtering of the exhaust gas.
进气管本体3内壁底部的左右两侧均开设有定位槽16,活动板6的底部固定有定位块15,定位块15与定位槽16的内壁滑动连接,当一侧的活动板6落下后,其底部的定位块15便会进入相应的定位槽16内部,通过定位块15对活动板6的下部进行定位,提高活动板6的稳定性。Positioning grooves 16 are provided on both sides of the bottom of the inner wall of the air intake pipe body 3, and a positioning block 15 is fixed to the bottom of the movable plate 6. The positioning block 15 is slidably connected to the inner wall of the positioning groove 16. When the movable plate 6 on one side falls, the positioning block 15 at its bottom will enter the corresponding positioning groove 16, and the lower part of the movable plate 6 is positioned by the positioning block 15 to improve the stability of the movable plate 6.
工作原理:当该逆流式喷淋塔在工作时,废气直接进入进气管本体3的内部,进而通过左侧活动板6表面的滤网本体10对废气中的大颗粒灰尘进行过滤,经过过滤后的废气便会进入塔身1的内部,水箱2内部的液体向塔身1内部喷洒,进而对废气进行处理,经过一段时间的使用后,若左侧的滤网本体10表面网孔被灰尘堵塞过多影响废气进入时,工作人员便可以直接将安装盒4后方的电机83打开,控制电机83输出轴的旋转方向,进而使得左侧的活动板6上移的同时,右侧的活动板6直接下降,当右侧活动板6底部的定位块15进入定位槽16内部后,工作人员将电机83关闭,完成对滤网本体10之间的位置切换,然后工作人员将密封门5打开,并将左侧活动板6表面的滤网本体10取下,便可以对堵塞的滤网本体10进行清理,而右侧的滤网本体10继续对废气进行过滤处理,以此来完成对废气的过滤净化处理。Working principle: When the countercurrent spray tower is working, the exhaust gas directly enters the interior of the air inlet pipe body 3, and then the large particles of dust in the exhaust gas are filtered through the filter body 10 on the surface of the left movable plate 6. The filtered exhaust gas will enter the interior of the tower body 1, and the liquid in the water tank 2 will be sprayed into the interior of the tower body 1 to treat the exhaust gas. After a period of use, if the mesh on the surface of the left filter body 10 is clogged with too much dust and affects the entry of exhaust gas, the staff can directly turn on the motor 83 behind the installation box 4 to control the motor 8 3 output shaft rotates in the direction of rotation, so that the movable plate 6 on the left side moves up while the movable plate 6 on the right side directly descends. When the positioning block 15 at the bottom of the right movable plate 6 enters the positioning groove 16, the staff turns off the motor 83 to complete the position switching of the filter body 10. Then the staff opens the sealing door 5 and removes the filter body 10 on the surface of the left movable plate 6. The blocked filter body 10 can be cleaned, while the filter body 10 on the right side continues to filter the exhaust gas, thereby completing the filtering and purification of the exhaust gas.
尽管已经示出和描述了本实用新型的实施例,对于本领域的普通技术人员而言,可以理解在不脱离本实用新型的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型,本实用新型的范围由所附权利要求及其等同物限定。Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323546306.0U CN221906217U (en) | 2023-12-25 | 2023-12-25 | Counterflow spray tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323546306.0U CN221906217U (en) | 2023-12-25 | 2023-12-25 | Counterflow spray tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221906217U true CN221906217U (en) | 2024-10-29 |
Family
ID=93202762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323546306.0U Active CN221906217U (en) | 2023-12-25 | 2023-12-25 | Counterflow spray tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221906217U (en) |
-
2023
- 2023-12-25 CN CN202323546306.0U patent/CN221906217U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN215233109U (en) | Medical waste handles exhaust filter equipment | |
| CN218307168U (en) | Energy-concerving and environment-protective device of flue gas desulfurization denitration | |
| CN221906217U (en) | Counterflow spray tower | |
| CN221085110U (en) | Dust collector of casting equipment | |
| CN220026389U (en) | A dust filter plate anti-blocking device | |
| CN220405019U (en) | High concentration waste gas scrubbing tower convenient to maintain | |
| CN118788147A (en) | A decarbonization system solution purification device and method | |
| CN220696276U (en) | Waste gas purification device for environmental protection engineering | |
| CN112604373A (en) | Self-cleaning formula wastewater treatment system for circuit board processing | |
| CN118356758A (en) | Air purification device capable of removing fine particles | |
| CN214436878U (en) | Efficient backwashing structure of internal inflow grating | |
| CN213193078U (en) | Exhaust-gas treatment equipment with cleaning function | |
| CN211725178U (en) | An environmentally friendly waste gas treatment equipment with waste gas circulation structure | |
| CN209423304U (en) | A kind of novel and multifunctional waste gas purification environmental protection equipment | |
| CN114345065A (en) | Energy-saving and environment-friendly equipment for waste gas treatment | |
| CN221720641U (en) | Purification recycling equipment for aluminum production wastewater | |
| CN222324392U (en) | Industrial wastewater treatment equipment | |
| CN215354971U (en) | Large-flow cleaning machine | |
| CN217067697U (en) | A demister flushing mechanism in MVR salt making process | |
| CN221867770U (en) | Efficient oil mist removing and purifying device for precision machining center | |
| CN220656831U (en) | Desulfurization, denitrification and dust removal equipment | |
| CN220633525U (en) | Flue gas purification device in deacidification tower | |
| CN221359110U (en) | Washing tower for chemical waste gas sedimentation | |
| CN215352502U (en) | Stable large-scale metal mixer dust remover | |
| CN115350582B (en) | Spray type reaction tower for industrial waste gas treatment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |