CN220644450U - Non-negative pressure equipment convenient to install - Google Patents

Non-negative pressure equipment convenient to install Download PDF

Info

Publication number
CN220644450U
CN220644450U CN202322257009.8U CN202322257009U CN220644450U CN 220644450 U CN220644450 U CN 220644450U CN 202322257009 U CN202322257009 U CN 202322257009U CN 220644450 U CN220644450 U CN 220644450U
Authority
CN
China
Prior art keywords
block
negative pressure
connecting pipe
limiting
rotating
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
Application number
CN202322257009.8U
Other languages
Chinese (zh)
Inventor
余青松
丁凡凡
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.)
Wuhan Longdabai Automation Equipment Engineering Co ltd
Original Assignee
Wuhan Longdabai Automation Equipment Engineering Co ltd
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 Wuhan Longdabai Automation Equipment Engineering Co ltd filed Critical Wuhan Longdabai Automation Equipment Engineering Co ltd
Priority to CN202322257009.8U priority Critical patent/CN220644450U/en
Application granted granted Critical
Publication of CN220644450U publication Critical patent/CN220644450U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Transmission Devices (AREA)

Abstract

The utility model discloses a non-negative pressure device convenient to install, which relates to the technical field of water conservancy transmission and comprises the non-negative pressure device, wherein a water outlet port is arranged on the non-negative pressure device, a connecting pipe is rotatably installed on the water outlet port, a fixed block is fixedly installed on the connecting pipe, a fixed structure is movably installed on the connecting pipe, a rotating structure is rotatably installed on the connecting pipe, a limiting structure is movably installed on the fixed block, the fixed structure comprises a water pipe, the water pipe is movably installed on the connecting pipe, and a connecting block is fixedly installed on the water pipe. According to the utility model, through the arrangement of the reciprocating screw rod, the movable ring, the gear and the like, the reciprocating screw rod drives the movable ring to overturn the rotating block through the rotating gear, so that the limiting block is inserted into the limiting groove, the water pipe and the non-negative pressure equipment are connected and fixed, the quick installation of the non-negative pressure equipment and the water pipe can be realized, the installation time is shortened, and the working efficiency is improved.

Description

Non-negative pressure equipment convenient to install
Technical Field
The utility model relates to the technical field of water conservancy transmission, in particular to negative pressure-free equipment convenient to install.
Background
The non-negative pressure equipment is secondary pressurized water supply equipment which is directly connected with the municipal water supply network by a pressurized water supply unit and is used for serially overlapping water supply on the basis of the residual pressure of the municipal water supply network so as to ensure that the pressure of the municipal water supply network is not less than the set protection pressure. The device mainly comprises a steady flow tank, a vacuum inhibitor, a variable-frequency speed-regulating water pump unit, a pressure sensor, a variable-frequency control cabinet and the like. The water inlet pipe from the municipal pipe network is directly connected to the water inlet of the steady flow tank, the water outlet of the steady flow tank is connected to the water inlet pipe of the pressurizing pump set after passing through the sterilizing device, and the water outlet pipe of the pressurizing pump set is connected with the water pipe of the user and directly supplies water to the pipe network of the user.
In the prior art, the existing connection mode of the water supply pipe of the non-negative pressure equipment is generally formed by screwing screws, the installation is complicated, more time is spent in the process of assembly, and the screws are required to be detached by using tools in the process of maintenance and detachment, so that the working efficiency of workers is reduced, and the non-negative pressure equipment convenient to install is required to meet the demands of people.
Disclosure of Invention
The utility model aims to provide negative pressure-free equipment convenient to install, so as to solve the problems that the existing negative pressure-free equipment provided in the background art can take more time during assembly, and the screw needs to be detached by using a tool during maintenance and detachment, so that the working efficiency of staff is reduced.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a no negative pressure equipment convenient to installation, includes no negative pressure equipment, be equipped with the play water interface on the no negative pressure equipment, it installs the connecting pipe to rotate on the play water interface, fixed mounting has the fixed knot on the connecting pipe, movable mounting has fixed knot to construct on the connecting pipe, rotate on the connecting pipe and install rotating structure, movable mounting has limit structure on the fixed knot, when needs change the water pipe, the pulling stationary blade, the removal of stationary blade drives the loose axle through the sliding hole and removes, the removal of loose axle compresses the spring, make the loose axle break away from in the limit hole, thereby the restriction to the connecting pipe has been removed, rotate the connecting pipe, make the gear drive reciprocating screw through the meshing with the ring gear rotate, reciprocating screw's rotation drives the thread piece and moves on reciprocating screw through the screw hole simultaneously, make the removal of thread piece limited, can only carry out horizontal migration, the loose loop moves, when the rotation loop is kept away from the rotating block, the restriction to the rotating block has been released, the rotation of rotating block can drive the axis of rotation through the rotation, can compress the torsional spring, thereby the restriction water pipe can be removed from the restriction groove to the water pipe change, thereby the water pipe is dismantled from the restriction groove.
Preferably, the fixed knot constructs including the water pipe, water pipe movable mounting is on the connecting pipe, fixed mounting has the connecting block on the water pipe, fixed mounting has the axis of rotation on the connecting pipe, rotate in the axis of rotation and install the dwang, one side fixed mounting finite block of dwang, the rotation of dwang can drive the axis of rotation through the rotation hole and rotate, can compress the torsional spring when the axis of rotation rotates for the restriction groove is kept away from to the restriction piece, thereby has solved the restriction to the water pipe, and the pulling water pipe makes the connecting block pull out from the spread groove, thereby can dismantle the change to the water pipe.
Preferably, the connecting pipe is provided with the connecting groove, the connecting block is movably arranged in the connecting groove, the rotating block is provided with the rotating hole, the rotating shaft is rotatably arranged in the rotating hole, the rotating shaft is fixedly sleeved with the torsion spring, one end of the torsion spring is fixedly arranged on the rotating shaft, the other end of the torsion spring is fixedly arranged on the inner wall of the rotating hole, the connecting block is provided with the limiting groove, the limiting block is movably arranged in the limiting groove, the rotating block can drive the rotating shaft to rotate through the rotating hole, the rotating shaft rotates and compresses the torsion spring, the limiting block is far away from the limiting groove, the limitation on the water pipe is eliminated, the water pipe is pulled, and the connecting block is pulled out from the connecting groove, so that the water pipe can be detached and replaced.
Preferably, the rotating structure comprises a gear, the gear is rotatably arranged on the connecting pipe, a reciprocating screw rod is fixedly arranged on one side of the gear, a thread block is arranged on the reciprocating screw rod in a threaded manner, a movable ring is fixedly arranged on the thread block, a toothed ring is fixedly arranged on the water outlet port, the gear is meshed with the toothed ring, the gear drives the reciprocating screw rod to rotate through the meshing of the toothed ring, the rotation of the reciprocating screw rod drives the thread block to move in a limiting groove, and meanwhile, the rotation of the reciprocating screw rod drives the thread block to move on the reciprocating screw rod through a threaded hole, so that the movement of the thread block is limited and can only move horizontally, and the movement of the thread block drives the movable ring to move when the movable ring is far away from the rotating block, so that the limitation on the rotating block is relieved.
Preferably, the limiting groove is formed in the connecting pipe, the reciprocating screw rod is rotatably arranged in the limiting groove, the threaded block is provided with the threaded hole, the reciprocating screw rod is threadedly arranged in the threaded hole, the gear drives the reciprocating screw rod to rotate through meshing with the toothed ring, the reciprocating screw rod rotates to drive the threaded block to move in the limiting groove, the threaded block is simultaneously driven to move on the reciprocating screw rod through the threaded hole, the movement of the threaded block is limited and can only be horizontally moved, the movable ring is driven to move when the movable ring is far away from the rotating block, and the limitation on the rotating block is relieved.
Preferably, the limit structure comprises a movable shaft, the movable shaft is movably arranged on the fixed block, a fixing piece is fixedly arranged on one side of the movable shaft, the fixing piece is pulled, the movable shaft is driven to move by the movement of the fixing piece through the sliding hole, the spring is compressed by the movement of the movable shaft, and the movable shaft is separated from the limit hole, so that the limit on the connecting pipe is eliminated.
Preferably, the fixed block is provided with a sliding hole, the fixed plate is slidably arranged in the sliding hole, the sliding hole is slidably sleeved with a spring, two sides of the spring are fixedly arranged on one side, close to the fixed block and the fixed plate, of the fixed block, the fixed plate is pulled, the movable shaft is driven to move by the movement of the fixed plate through the sliding hole, and the spring is compressed by the movement of the movable shaft.
Preferably, the gear ring is provided with a plurality of limiting holes, the movable shaft is movably arranged in a corresponding limiting hole, and the fixing piece is pulled to enable the movable shaft to be separated from the limiting hole, so that the limitation on the connecting pipe is eliminated.
The beneficial effects of the utility model are as follows:
according to the utility model, through the arrangement of the reciprocating screw rod, the movable ring, the gear and the like, the reciprocating screw rod drives the movable ring to overturn the rotating block through the rotating gear, so that the limiting block is inserted into the limiting groove, the water pipe and the non-negative pressure equipment are connected and fixed, the quick installation of the non-negative pressure equipment and the water pipe can be realized, the installation time is shortened, and the working efficiency is improved.
According to the utility model, through the arrangement of the thread blocks, the toothed rings, the torsion springs and the like, when the water pipe is damaged and needs to be disassembled, the reciprocating screw rod drives the movable ring to be away from the rotating block through rotating the gear, so that the limiting block is away from the limiting groove, and the water pipe can be disassembled, thereby facilitating the disassembly of non-negative pressure equipment.
Drawings
FIG. 1 is a schematic diagram of a non-negative pressure device for easy installation;
FIG. 2 is a schematic view of a connection pipe portion of a non-negative pressure apparatus according to the present utility model;
fig. 3 is a schematic cross-sectional view of a rotation shaft portion of a non-negative pressure apparatus according to the present utility model for easy installation;
FIG. 4 is a schematic cross-sectional view of a reciprocating screw portion of a non-negative pressure apparatus for facilitating installation according to the present utility model;
fig. 5 is a schematic cross-sectional view of a gear portion of a non-negative pressure apparatus according to the present utility model.
In the figure: 100. a non-negative pressure device; 101. a water outlet interface; 200. a connecting pipe; 201. a water pipe; 202. a connecting block; 203. a rotating shaft; 204. a rotating block; 205. a limiting block; 206. a connecting groove; 207. a rotation hole; 208. a torsion spring; 209. a limiting groove; 300. a gear; 301. a reciprocating screw rod; 302. a screw block; 303. a movable ring; 304. a toothed ring; 305. a limit groove; 306. a threaded hole; 400. a fixed block; 401. a movable shaft; 402. a fixing piece; 403. a sliding hole; 404. a spring; 405. and a limiting hole.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
Referring to fig. 1-5, a non-negative pressure device convenient to install, including non-negative pressure device 100, be equipped with outlet port 101 on the non-negative pressure device 100, rotationally install connecting pipe 200 on the outlet port 101, fixedly install fixed block 400 on connecting pipe 200, movably install fixed structure on connecting pipe 200, rotationally install rotating structure on connecting pipe 200, movably install limit structure on fixed block 400, when needing to change water pipe 201, pulling stationary blade 402, the removal of stationary blade 402 drives movable shaft 401 through slide hole 403 and removes, movable shaft 401 removes and compresses spring 404, make movable shaft 401 break away from spacing hole 405, thereby release the restriction to connecting pipe 200, rotate connecting pipe 200, make gear 300 drive reciprocating screw 301 through the meshing with ring gear 304, reciprocating screw 301's rotation drives thread piece 302 and removes in spacing groove 305, reciprocating screw 301's rotation is simultaneously through screw hole 306 drive thread piece 302 and is removed on reciprocating screw 301, make the removal of thread piece 302 can only carry out horizontal migration, movable ring 303 is moved, when movable ring 204 has kept away from rotary block 203, thereby, and release the rotation groove 203 makes the restriction to remove from the rotation groove 203, thereby can remove from the restriction water pipe 203, thereby, and remove from the rotation groove 203 can be removed from the rotation groove, thereby, and can be removed from the restriction water pipe 201.
Further, the fixed knot constructs including water pipe 201, water pipe 201 movable mounting is on connecting pipe 200, fixed mounting has connecting block 202 on the water pipe 201, fixed mounting has axis of rotation 203 on the connecting pipe 200, rotationally install rotatory piece 204 on the axis of rotation 203, one side fixed mounting finite block 205 of rotatory piece 204, the rotation of rotatory piece 204 can drive the axis of rotation 203 through the rotation hole 207 and rotate, the rotation axis 203 rotates can compress torsional spring 208 simultaneously, make finite block 205 keep away from limit groove 209, thereby the restriction to water pipe 201 has been removed, pulling water pipe 201, make connecting block 202 pull out from the spread groove 206, thereby can dismantle the change to water pipe 201.
Further, the connecting pipe 200 is provided with the connecting groove 206, the connecting block 202 is movably arranged in the connecting groove 206, the rotating block 204 is provided with the rotating hole 207, the rotating shaft 203 is rotatably arranged in the rotating hole 207, the rotating shaft 203 is fixedly sleeved with the torsion spring 208, one end of the torsion spring 208 is fixedly arranged on the rotating shaft 203, the other end of the torsion spring 208 is fixedly arranged on the inner wall of the rotating hole 207, the connecting block 202 is provided with the limiting groove 209, the limiting block 205 is movably arranged in the limiting groove 209, the rotating shaft 203 is driven to rotate by the rotating block 204 through the rotating hole 207, the torsion spring 208 is compressed while the rotating shaft 203 rotates, the limiting block 205 is far away from the limiting groove 209, so that the limitation on the water pipe 201 is removed, the water pipe 201 is pulled, and the connecting block 202 is pulled out from the connecting groove 206, so that the water pipe 201 can be detached and replaced.
Further, the rotating structure comprises a gear 300, the gear 300 is rotatably mounted on the connecting pipe 200, a reciprocating screw rod 301 is fixedly mounted on one side of the gear 300, a thread block 302 is mounted on the reciprocating screw rod 301 in a threaded manner, a movable ring 303 is fixedly mounted on the thread block 302, a toothed ring 304 is fixedly mounted on the water outlet port 101, the gear 300 is meshed with the toothed ring 304, the gear 300 drives the reciprocating screw rod 301 to rotate through meshing with the toothed ring 304, the rotation of the reciprocating screw rod 301 drives the thread block 302 to move in a limiting groove 305, and meanwhile, the rotation of the reciprocating screw rod 301 drives the thread block 302 to move on the reciprocating screw rod 301 through a threaded hole 306, so that the movement of the thread block 302 is limited and can only move horizontally, the movement of the thread block 302 drives the movable ring 303 to move, and when the movable ring 303 is far away from the rotating block 204, the limitation of the rotating block 204 is relieved.
Further, the limiting groove 305 is formed in the connecting pipe 200, the reciprocating screw 301 is rotatably mounted in the limiting groove 305, the threaded block 302 is provided with the threaded hole 306, the reciprocating screw 301 is threadedly mounted in the threaded hole 306, the gear 300 drives the reciprocating screw 301 to rotate through meshing with the toothed ring 304, the reciprocating screw 301 rotates to drive the threaded block 302 to move in the limiting groove 305, and meanwhile, the threaded block 302 is driven to move on the reciprocating screw 301 through the threaded hole 306 to enable movement of the threaded block 302 to be limited and only horizontally move, the movable ring 303 is driven to move by movement of the threaded block 302, and when the movable ring 303 is far away from the rotating block 204, limitation on the rotating block 204 is relieved.
Further, the limiting structure comprises a movable shaft 401, the movable shaft 401 is movably mounted on the fixed block 400, one side of the movable shaft 401 is fixedly provided with a fixing plate 402, the fixing plate 402 is pulled, the movable shaft 401 is driven to move by the movement of the fixing plate 402 through a sliding hole 403, the spring 404 is compressed by the movement of the movable shaft 401, and the movable shaft 401 is separated from the limiting hole 405, so that the limitation on the connecting pipe 200 is relieved.
Further, a sliding hole 403 is formed in the fixed block 400, the fixed block 402 is slidably mounted in the sliding hole 403, a spring 404 is slidably sleeved on the sliding hole 403, two sides of the spring 404 are fixedly mounted on one side, close to each other, of the fixed block 400 and the fixed block 402, the fixed block 402 is pulled, the movable shaft 401 is driven to move by the movement of the fixed block 402 through the sliding hole 403, and the spring 404 is compressed by the movement of the movable shaft 401.
Further, the gear ring 304 is provided with a plurality of limiting holes 405, the movable shaft 401 is movably mounted in a corresponding limiting hole 405, and the fixing piece 402 is pulled, so that the movable shaft 401 is separated from the limiting hole 405, and the limitation on the connecting pipe 200 is removed.
The working principle of the utility model is as follows:
when the water pipe 201 needs to be replaced, the fixing piece 402 is pulled, the movable shaft 401 is driven to move by the movement of the fixing piece 402 through the sliding hole 403, the spring 404 is compressed by the movement of the movable shaft 401, the movable shaft 401 is separated from the limiting hole 405, the limitation of the connecting pipe 200 is removed, the connecting pipe 200 is rotated, the gear 300 drives the reciprocating screw 301 to rotate through meshing with the toothed ring 304, the reciprocating screw 301 rotates to drive the threaded block 302 to move in the limiting groove 305, the reciprocating screw 301 rotates to drive the threaded block 302 to move on the reciprocating screw 301 through the threaded hole 306, the movement of the threaded block 302 is limited, only horizontal movement can be performed, the movement of the threaded block 302 drives the movable ring 303 to move, when the movable ring 303 is far away from the rotating block 204, the limitation of the rotating block 204 is removed, the rotating shaft 203 drives the rotating shaft 203 to rotate through the rotating hole 207, the torsional spring 208 is compressed, the limiting block 205 is far away from the limiting groove 209, the limitation of the water pipe 201 is removed, the connecting pipe 201 is pulled, and the connecting block 202 is pulled out of the connecting groove 206, and the water pipe 201 can be replaced.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (8)

1. The utility model provides a no negative pressure equipment convenient to installation, includes no negative pressure equipment (100), be equipped with on no negative pressure equipment (100) and go out water interface (101), its characterized in that: the water outlet connector is characterized in that the connecting pipe (200) is rotatably arranged on the water outlet connector (101), the fixing block (400) is fixedly arranged on the connecting pipe (200), the fixing structure is movably arranged on the connecting pipe (200), the rotating structure is rotatably arranged on the connecting pipe (200), and the limiting structure is movably arranged on the fixing block (400).
2. A non-negative pressure apparatus for facilitating installation as defined in claim 1, wherein: the fixing structure comprises a water pipe (201), the water pipe (201) is movably arranged on a connecting pipe (200), a connecting block (202) is fixedly arranged on the water pipe (201), a rotating shaft (203) is fixedly arranged on the connecting pipe (200), a rotating block (204) is rotatably arranged on the rotating shaft (203), and a limiting block (205) is fixedly arranged on one side of the rotating block (204).
3. A non-negative pressure apparatus for facilitating installation as defined in claim 1, wherein: connecting groove (206) has been seted up on connecting pipe (200), connecting block (202) movable mounting has seted up rotation hole (207) on rotating block (204) in connecting groove (206), rotation axis (203) rotate install in rotation hole (207), fixed sleeve has connected torsional spring (208) on rotation axis (203), the one end fixed mounting of torsional spring (208) is on rotation axis (203), the other end fixed mounting of torsional spring (208) is on the inner wall in rotation hole (207), limiting groove (209) have been seted up on connecting block (202), limiting block (205) movable mounting is in limiting groove (209).
4. A non-negative pressure apparatus for facilitating installation as defined in claim 1, wherein: the rotary structure comprises a gear (300), the gear (300) is rotatably arranged on the connecting pipe (200), a reciprocating screw rod (301) is fixedly arranged on one side of the gear (300), a thread block (302) is arranged on the reciprocating screw rod (301) in a threaded mode, a movable ring (303) is fixedly arranged on the thread block (302), a toothed ring (304) is fixedly arranged on the water outlet interface (101), and the gear (300) is meshed with the toothed ring (304).
5. A non-negative pressure apparatus for facilitating installation as defined in claim 1, wherein: a limit groove (305) is formed in the connecting pipe (200), the reciprocating screw rod (301) is rotatably installed in the limit groove (305), a threaded hole (306) is formed in the threaded block (302), and the reciprocating screw rod (301) is installed in the threaded hole (306) in a threaded mode.
6. A non-negative pressure apparatus for facilitating installation as defined in claim 1, wherein: the limiting structure comprises a movable shaft (401), wherein the movable shaft (401) is movably arranged on the fixed block (400), and one side of the movable shaft (401) is fixedly provided with a fixing piece (402).
7. A non-negative pressure apparatus for facilitating installation as defined in claim 1, wherein: the fixing block (400) is provided with a sliding hole (403), the fixing piece (402) is slidably arranged in the sliding hole (403), the sliding hole (403) is slidably sleeved with a spring (404), and two sides of the spring (404) are fixedly arranged on one side, close to each other, of the fixing block (400) and the fixing piece (402).
8. A non-negative pressure apparatus for facilitating installation as defined in claim 4, wherein: a plurality of limiting holes (405) are formed in the toothed ring (304), and the movable shaft (401) is movably arranged in the corresponding limiting hole (405).
CN202322257009.8U 2023-08-21 2023-08-21 Non-negative pressure equipment convenient to install Active CN220644450U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202322257009.8U CN220644450U (en) 2023-08-21 2023-08-21 Non-negative pressure equipment convenient to install

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202322257009.8U CN220644450U (en) 2023-08-21 2023-08-21 Non-negative pressure equipment convenient to install

Publications (1)

Publication Number Publication Date
CN220644450U true CN220644450U (en) 2024-03-22

Family

ID=90293538

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202322257009.8U Active CN220644450U (en) 2023-08-21 2023-08-21 Non-negative pressure equipment convenient to install

Country Status (1)

Country Link
CN (1) CN220644450U (en)

Similar Documents

Publication Publication Date Title
CN220644450U (en) Non-negative pressure equipment convenient to install
CN204988693U (en) Test bench is dismantled to drilling tool
CN114179146B (en) PE pipeline port leveling equipment for hydraulic engineering
CN213994970U (en) Water filter convenient to renew cartridge more
CN209665242U (en) Hydraulic cylinder end cap disassembly mechanism
CN221531195U (en) Motor rebound device
CN220574039U (en) Multistage screening plant of refractory material
CN203612737U (en) Pneumatic yarn splitting device
CN211574295U (en) Fire-fighting pipeline flow controller
CN220302449U (en) Pull rod type oil cylinder
CN221095307U (en) Safety type non-negative pressure water supply equipment
CN221831377U (en) Breathing machine convenient for replacing filter membrane
CN207830941U (en) A kind of display screen of generator group controller
CN221716805U (en) Disassembling tool for rotor bolt of generator set
CN214366433U (en) Biogas air inlet mechanism of biogas generator set
CN219242304U (en) Centrifugal pump convenient to install
CN203983056U (en) A kind of looped network cabinet switch transmission mechanism
CN219827956U (en) Spring support and hanger convenient to adjust spring interval
CN214579975U (en) Underground water quality monitoring device
CN219413708U (en) Valve control executor convenient to detach
CN221047416U (en) Water conservancy pipeline cutting device
CN219857096U (en) Steam car washer
CN221015126U (en) Filter equipment that can change automatically
CN221891839U (en) Disassembling tool for condensing fan rotor bearing
CN221767116U (en) Plugging device for idle interface of electrical secondary equipment

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant