CN207894893U - A kind of air detection air quick sampling device - Google Patents

A kind of air detection air quick sampling device Download PDF

Info

Publication number
CN207894893U
CN207894893U CN201721851528.5U CN201721851528U CN207894893U CN 207894893 U CN207894893 U CN 207894893U CN 201721851528 U CN201721851528 U CN 201721851528U CN 207894893 U CN207894893 U CN 207894893U
Authority
CN
China
Prior art keywords
baffle
air
water tank
hook
bearing seat
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201721851528.5U
Other languages
Chinese (zh)
Inventor
肖峰
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.)
Jiangsu Guo Jian Decoration Co Ltd
Original Assignee
Jiangsu Guo Jian Decoration 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 Jiangsu Guo Jian Decoration Co Ltd filed Critical Jiangsu Guo Jian Decoration Co Ltd
Priority to CN201721851528.5U priority Critical patent/CN207894893U/en
Application granted granted Critical
Publication of CN207894893U publication Critical patent/CN207894893U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Sampling And Sample Adjustment (AREA)

Abstract

The utility model is related to a kind of air detection air quick sampling devices.The technical problem to be solved by the present invention is to provide easy to carry, sustainable development, air acquisition fireballing air detection air quick sampling devices.In order to solve the above-mentioned technical problem, the utility model provides such a air detection air quick sampling device, includes bottom plate, holder, water tank, 7 type frame, the first hook, first bearing seat, second bearing seat, shaft, gear, sampling bottle, the first spring, rack etc.;It is equipped with holder, water tank and 7 type frame on bottom plate successively from left to right, holder right side wall is equipped with the first hook and first bearing seat, and first bearing seat is located at the first hook lower section, and 7 type frame left side vertical faces are equipped with second bearing seat.The utility model has the characteristics that reusing water resource is acquired air, and the speed of air acquisition, in addition the design of lifting-handle-type.

Description

A kind of air detection air quick sampling device
Technical field
The present invention relates to a kind of air detection air sampling rigs more particularly to a kind of air detection quickly to be adopted with air Sampling device.
Background technology
Air refers to the air of the earth.Also there are the spiritual expression or feature that people feels in certain environment.Air is in chemistry In mean:Air is a kind of no color, scentless gas.It is a kind of mixture.Detection:It is examined with specified method Test the specified technical performance index of certain object (gas, liquid, solid).Suitable for the performance rating of various industries scope, Such as:Civil construction project, water conservancy, food, chemistry, environment, machinery, machine etc..
Air is detected and how will be seen that local air quality, so first have to carry out air sampling, however it is existing With the presence of air detection air sampling rig it is not readily portable, can not to embody sustainable development, air acquisition slow-footed Disadvantage, therefore there is an urgent need for a kind of easy to carry, sustainable development of research and development, the fireballing air detections of air acquisition quickly to be adopted with air Sampling device.
Invention content
Existing air detection air sampling rig is not readily portable, can not embody sustainable development in order to overcome by the present invention Exhibition, the slow-footed disadvantage of air acquisition, the technical problem to be solved in the present invention is to provide easy to carry, sustainable development, air Picking rate fast air detection air quick sampling device.
In order to solve the above technical problem, the present invention provides such a air detection air quick sampling device, Include bottom plate, holder, water tank, 7 type frame, the first hook, first bearing seat, second bearing seat, shaft, gear, sampling bottle, One spring, rack, drawstring, draw ring, the second hook, water pump, water supply hose, first baffle, second baffle, second spring, first Motor and cam, are equipped with holder, water tank and 7 type frame on bottom plate successively from left to right, and holder right side wall is equipped with the first hook and the One bearing block, first bearing seat are located at the first hook lower section, and 7 type frame left side vertical faces are equipped with second bearing seat, second bearing seat Shaft is connected between first bearing seat, shaft is equipped with sampling bottle and gear, and sampling bottle is located on the right side of gear, and sampling bottle Above water tank, sampling bottle bottom is equipped with check valve, and horizontal plane is connected with the first spring on the inside of 7 type frame, under the first spring End is connected with rack vertically, and rack is located on rear side of gear, and rack and pinion engagement, and rack lower end is connected with drawstring, on bottom plate Be provided with through-hole, drawstring tail end passes through through-hole, and drawstring tail end is equipped with draw ring, and bottom base plate is equipped with the second hook, the second hook with Draw ring coordinates, and first baffle is hingedly connected on the left of tank top, second baffle, second gear are hingedly connected on the right side of tank top The left end of plate is contacted with the right end of first baffle, and the bottom of first baffle and second baffle is connected with the madial wall of water tank Two springs are mounted on first motor in water tank, cam, cam and first baffle are equipped on front side of first motor at left and right sides of bottom It is contacted with the bottom of second baffle, bottom is equipped with water pump in water tank, and water pump is located at the left side of left cam, is connected on the left of water pump The tail end of water supply hose, water supply hose passes through water tank and the first hook to stretch into sampling bottle.
Preferably, further include having handle, handle is equipped between holder and 7 type frame, handle left end hingedly connects with cradle top It connects, is articulated and connected at the top of handle right end and 7 type frame.
Preferably, further include having storage tank, bottom plate top right side is equipped with storage tank;Preferably, bottom plate material is Q235 steel; Preferably, first motor is servo motor;Preferably, drawstring is steel wire rope.
The invention also discloses a kind of air detection manufacturing methods of air quick sampling device, which is characterized in that packet Include following steps:
(1) rectangular base plate is made first, is set gradually holder, water tank and 7 type frame from left to right on bottom plate, is being propped up Handle is set between frame and 7 type frame.
(2) in the first hook of holder right side wall setting and first bearing seat, first bearing seat is located at the first hook lower section, Second bearing seat is arranged in 7 type frame left side vertical faces, and shaft is connected between second bearing seat and first bearing seat, is set in shaft Sampling bottle and gear are set, sampling bottle is located on the right side of gear, and sampling bottle is located above water tank, and setting is unidirectional in the bottom of sampling bottle Valve is equipped with storage tank in bottom plate top right side.
(3) horizontal plane connects the first spring on the inside of 7 type frame, and rack, rack position are connected vertically in the lower end of the first spring On rear side of gear, and rack and pinion engages, and in rack lower end connection stay cord, through-hole is opened up on bottom plate, drawstring tail end is worn The through-hole is crossed, and draw ring is set in drawstring tail end, in the second hook of bottom base plate setting, the second hook coordinates with draw ring.
(4) be articulated and connected first baffle on the left of tank top, and be articulated and connected second baffle on the right side of tank top, and second The left end of baffle is contacted with the right end of first baffle, and the bottom of first baffle and second baffle connect with the madial wall of water tank Two springs, are respectively mounted first motor in water tank at left and right sides of bottom, cam, cam and first gear are arranged on front side of first motor The bottom of plate and second baffle contacts, and water pump is arranged in bottom in water tank, and water pump is located at the left side of left cam, on the left of water pump Water supply hose is connected, passes through water tank and the first hook to stretch into sampling bottle the tail end of water supply hose, water tank and sampling bottle volume It is equal.
The invention also discloses a kind of air detection method of samplings of air quick sampling device, which is characterized in that packet Include following steps:
(1) when being sampled to air, first in the built-in full water of water tank, start pumping for water pump, water by water supply hose into Enter in sampling bottle, when water pump exhausts the water in water tank, the built-in full water of sampling bottle switches off the pump.
(2) control first motor rotates clockwise, and first motor rotates clockwise band moving cam and rotates clockwise, and works as cam Distalmost end and first baffle and second baffle when contacting, first baffle and second baffle closed tank, when the most proximal end of cam When being contacted with first baffle and second baffle, under the action of second spring, the right end of first baffle and the left end of second baffle It moves downward, so that tank top is formed an opening, close first motor.
(3) bracelet is pulled downward on, drawstring is made to be moved downward in through-hole, drawstring moves downward band carry-over bar and moves downward, Because rack and pinion engages, rack moves downward band moving gear and rotates clockwise, and gear, which rotates clockwise, passes through shaft Sampling bottle is driven to rotate clockwise, sampling bottle is rotated clockwise to be detached with the tail end of water supply hose, when sampling bottle bottleneck is located at water When box top, by bracelet clasp on the second hook, sampling bottle is set to be in back-off state, the water in sampling bottle passes through tank top It is open in reflow tank, air is entered by the check valve of sampling bottle bottom in bottle during water flows out, when in sampling bottle When in water whole reflow tank, air is filled in sampling bottle.
(4) control first motor rotates clockwise, and the distalmost end of cam is made to be contacted with first baffle and second baffle, and first Baffle and second baffle closed tank and the bottleneck for blocking sampling bottle, air stay in sampling bottle, so realize air sample Acquisition.
Because further including having handle, handle is equipped between holder and 7 type frame, handle left end is articulated and connected with cradle top, It is articulated and connected at the top of handle right end and 7 type frame, handle facilitates operating personnel and carries the utility model.
Because further including having storage tank, bottom plate top right side is equipped with storage tank, and storage tank can be placed needed for air acquisition Tool.
Because bottom plate material is Q235 steel, Q235 steel ability to bear is not big, perishable, keeps bottom plate durable.
Because first motor is servo motor, servo motor can preferably control its rotating speed, keep operation more stable.
Because drawstring is steel wire rope, steel wire rope has the characteristics that wear-resisting, good toughness, is unlikely to deform, and extends making for drawstring Use the time limit.
The present invention has the characteristics that reusing water resource is acquired air, and the speed of air acquisition, adds The design of upper lifting-handle-type has reached easy to carry, sustainable development, the fireballing effect of air acquisition.
Description of the drawings
Fig. 1 is the first main structure diagram of the present invention.
Fig. 2 is second of main structure diagram of the present invention.
Fig. 3 is the third main structure diagram of the present invention.
Label in attached drawing be:1- bottom plates, 2- holders, 3- water tanks, 4-7 type frame, 5- first are linked up with, 6- first bearing seats, 7- second bearing seats, 8- shafts, 9- gears, 10- sampling bottles, the first springs of 11-, 12- racks, 13- drawstrings, 14- through-holes, 15- Draw ring, 16- second are linked up with, 17- water pumps, 18- water supply hoses, 19- first baffles, 20- second baffles, 21- second springs, 22- First motor, 23- cams, 24- handles, 25- storage tanks.
Specific implementation mode
The present invention is further illustrated with reference to the accompanying drawings and examples.
Embodiment 1, a kind of air detection air quick sampling device, as shown in Figs. 1-3, include bottom plate 1, holder 2, Water tank 3,7 type frame 4, first hook 5, first bearing seat 6, second bearing seat 7, shaft 8, gear 9, sampling bottle 10, the first spring 11, rack 12, drawstring 13, the hook of draw ring 15, second 16, water pump 17, water supply hose 18, first baffle 19, second baffle 20, the Two springs 21, first motor 22 and cam 23 are equipped with holder 2, water tank 3 and 7 type frame 4, holder 2 on bottom plate 1 successively from left to right Right side wall is equipped with the first hook 5 and first bearing seat 6, and first bearing seat 6 is located at 5 lower section of the first hook, 7 type frame, 4 left side vertical Face is equipped with second bearing seat 7, and shaft 8 is connected between second bearing seat 7 and first bearing seat 6, and shaft 8 is equipped with sampling bottle 10 With gear 9, sampling bottle 10 is located at 9 right side of gear, and 10 bottom of sampling bottle is equipped with check valve, and sampling bottle 10 is located at 3 top of water tank, 7 type frame, 4 inside horizontal plane is connected with the first spring 11, and the lower end of the first spring 11 is connected with rack 12 vertically, and rack 12 is located at 9 rear side of gear, and rack 12 is engaged with gear 9,12 lower end of rack is connected with drawstring 13, and through-hole 14, drawstring 13 are provided on bottom plate 1 Tail end passes through through-hole 14, and 13 tail end of drawstring, equipped with draw ring 15,1 bottom of bottom plate is equipped with the second hook 16, the second hook 16 and drawing Ring 15 coordinates, and 3 top left side of water tank is hingedly connected with first baffle 19, and 3 top right side of water tank is hingedly connected with second baffle 20, The left end of second baffle 20 is contacted with the right end of first baffle 19, the bottom of first baffle 19 and second baffle 20 with water tank 3 Madial wall be connected with second spring 21, first motor 22,22 front side of first motor are mounted in water tank 3 at left and right sides of bottom Equipped with cam 23, cam 23 is contacted with the bottom of first baffle 19 and second baffle 20, and bottom is equipped with water pump 17, water in water tank 3 Pump 17 is located at the left side of left cam 23, and 17 left side of water pump is connected with water supply hose 18, and the tail end of water supply hose 18 passes through water tank 3 It is stretched into sampling bottle 10 with the first hook 5.
Further include having handle 24, handle 24 is equipped between holder 2 and 7 type frame 4,24 left end of handle and 2 top of holder are hinged Connection, 24 right end of handle and 7 type frame, 4 top are articulated and connected.
Further include having storage tank 25,1 top right side of bottom plate is equipped with storage tank 25;1 material of bottom plate is Q235 steel;First motor 22 be servo motor;Drawstring 13 is steel wire rope.
The present embodiment also discloses a kind of manufacturing method of air detection air quick sampling device, which is characterized in that Include the following steps:
(1) rectangular base plate 1 is made first, sets gradually holder 2, water tank 3 and 7 type frame from left to right on bottom plate 1 4, handle 24 is set between holder 2 and 7 type frame 4.
(2) in the first hook 5 of 2 right side wall of holder setting and first bearing seat 6, first bearing seat 6 is located under the first hook 5 Side is arranged second bearing seat 7 in 7 type frame, 4 left side vertical face, shaft 8 is connected between second bearing seat 7 and first bearing seat 6, Sampling bottle 10 and gear 9 are set in shaft 8, sampling bottle 10 is located at 9 right side of gear, and sampling bottle 10 is located at 3 top of water tank, Check valve is arranged in the bottom of sampling bottle 10, and storage tank 25 is equipped in 1 top right side of bottom plate.
(3) the first spring 11 is connected in 7 type frame, 4 inside horizontal plane, rack 12 is connected vertically in the lower end of the first spring 11, Rack 12 is located at 9 rear side of gear, and rack 12 is engaged with gear 9, in 12 lower end connection stay cord 13 of rack, is opened up on bottom plate 1 13 tail end of drawstring is passed through the through-hole 14, and draw ring 15 is arranged in 13 tail end of drawstring by through-hole 14, is arranged second in 1 bottom of bottom plate Hook 16, the second hook 16 coordinate with draw ring 15.
(4) in 3 top left side of water tank articulated connection first baffle 19, in 3 top right side of water tank articulated connection second baffle 20, the left end of second baffle 20 is contacted with the right end of first baffle 19, and the bottom of first baffle 19 and second baffle 20 is and water The madial wall of case 3 connects second spring 21, first motor 22 is respectively mounted at left and right sides of bottom in water tank 3, in first motor 22 Cam 23 is arranged in front side, and cam 23 is contacted with the bottom of first baffle 19 and second baffle 20, and water pump is arranged in bottom in water tank 3 17, water pump 17 is located at the left side of left cam 23, connects water supply hose 18 in 17 left side of water pump, the tail end of water supply hose 18 is worn It crosses the hook of water tank 3 and first 5 to stretch into sampling bottle 10, water tank 3 is equal with 10 volume of sampling bottle.
The present embodiment also discloses a kind of method of sampling of air detection air quick sampling device, which is characterized in that Include the following steps:
(1) when being sampled to air, first in 3 built-in full water of water tank, start water pump 17 and draw water, water passes through water supply hose 18 enter in sampling bottles 10, and when water pump 17 exhausts the water in water tank 3,10 built-in full water of sampling bottle switches off the pump 17.
(2) control first motor 22 rotates clockwise, and first motor 22 rotates clockwise band moving cam 23 and rotates clockwise, When the distalmost end of cam 23 and first baffle 19 and second baffle 20 contact, 20 closed tank of first baffle 19 and second baffle 3, when the most proximal end of cam 23 is contacted with first baffle 19 and second baffle 20, under the action of second spring 21, first gear The right end of plate 19 and the left end of second baffle 20 move downward, and so that 3 top of water tank is formed an opening, close first motor 22.
(3) bracelet 15 is pulled downward on, drawstring 13 is made to be moved downward in through-hole 14, drawstring 13 moves downward band carry-over bar 12 It moves downward, because rack 12 is engaged with gear 9, rack 12 moves downward band moving gear 9 and rotates clockwise, and gear 9 is suitable Hour hands rotation drives sampling bottle 10 to rotate clockwise by shaft 8, and sampling bottle 10 rotates clockwise the tail end with water supply hose 18 Separation by bracelet clasp on the second hook 16, makes sampling bottle 10 be in back-off when 10 bottleneck of sampling bottle is located at 3 top of water tank State, in opening reflow tank 3 of the water by 3 top of water tank in sampling bottle 10, air passes through sampling during water flows out The check valve of 10 bottoms of bottle enters in bottle, and when in the water whole reflow tank 3 in sampling bottle 10, sky is filled in sampling bottle 10 Gas.
(4) control first motor 22 rotates clockwise, and makes the distalmost end and first baffle 19 and second baffle 20 of cam 23 Contact, first baffle 19 and 20 closed tank 3 of second baffle and the bottleneck for blocking sampling bottle 10, air stay in sampling bottle 10, So realize the acquisition of air sample.
Because further including having handle 24, handle 24,24 left end of handle and 2 top of holder are equipped between holder 2 and 7 type frame 4 Articulated connection, 24 right end of handle and 7 type frame, 4 top are articulated and connected, and handle 24 facilitates operating personnel and carries the utility model.
Because further including having storage tank 25,1 top right side of bottom plate is equipped with storage tank 25, and storage tank 25 can place air and adopt Tool needed for collection.
Because 1 material of bottom plate is Q235 steel, Q235 steel ability to bear is not big, perishable, keeps bottom plate 1 durable.
Because first motor 22 is servo motor, servo motor can preferably control its rotating speed, keep operation more stable.
Because drawstring 13 is steel wire rope, steel wire rope has the characteristics that wear-resisting, good toughness, is unlikely to deform, and extends drawstring 13 Service life.
The preferred embodiment of the present invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously Cannot the limitation to the scope of the claims of the present invention therefore be interpreted as.It should be pointed out that for those of ordinary skill in the art For, without departing from the inventive concept of the premise, several deformations can also be made, improves and substitutes, these belong to this hair Bright protection domain.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.

Claims (6)

1. a kind of air detection air quick sampling device, which is characterized in that include bottom plate (1), holder (2), water tank (3), 7 type frame (4), the first hook (5), first bearing seat (6), second bearing seat (7), shaft (8), gear (9), sampling bottle (10), the first spring (11), rack (12), drawstring (13), draw ring (15), the second hook (16), water pump (17), water supply hose (18), first baffle (19), second baffle (20), second spring (21), first motor (22) and cam (23), on bottom plate (1) It is equipped with holder (2), water tank (3) and 7 type frame (4) successively from left to right, holder (2) right side wall is equipped with the first hook (5) and first Bearing block (6), first bearing seat (6) are located at below the first hook (5), and 7 type frame (4) left side vertical face is equipped with second bearing seat (7), shaft (8) is connected between second bearing seat (7) and first bearing seat (6), shaft (8) is equipped with sampling bottle (10) and tooth It takes turns (9), sampling bottle (10) is located on the right side of gear (9), and sampling bottle (10) is located above water tank (3), and sampling bottle (10) bottom is set There is a check valve, horizontal plane is connected with the first spring (11) on the inside of 7 type frame (4), and the lower end of the first spring (11) connects with teeth vertically Item (12), rack (12) is located on rear side of gear (9), and rack (12) is engaged with gear (9), and rack (12) lower end is connected with drawstring (13), through-hole (14) is provided on bottom plate (1), drawstring (13) tail end passes through through-hole (14), and drawstring (13) tail end is equipped with draw ring (15), bottom plate (1) bottom is equipped with the second hook (16), and the second hook (16) coordinates with draw ring (15), water tank (3) top left side hinge It is connected to first baffle (19) in succession, water tank (3) top right side is hingedly connected with second baffle (20), the left end of second baffle (20) It is contacted with the right end of first baffle (19), the madial wall of the bottom of first baffle (19) and second baffle (20) with water tank (3) It is connected with second spring (21), first motor (22), first motor (22) front side are mounted at left and right sides of the interior bottom of water tank (3) Equipped with cam (23), cam (23) is contacted with the bottom of first baffle (19) and second baffle (20), and water tank (3) interior bottom is equipped with Water pump (17), water pump (17) are located at the left side of left cam (23), and water supply hose (18) is connected on the left of water pump (17), and water inlet is soft The tail end of pipe (18) passes through water tank (3) and the first hook (5) to stretch into sampling bottle (10).
2. a kind of air detection according to claim 1 air quick sampling device, which is characterized in that further include carrying Hand (24), is equipped with handle (24) between holder (2) and 7 type frame (4), handle (24) left end is articulated and connected at the top of holder (2), carries It is articulated and connected at the top of hand (24) right end and 7 type frame (4).
3. a kind of air detection according to claim 1 air quick sampling device, which is characterized in that further include having storage Object case (25), bottom plate (1) top right side are equipped with storage tank (25).
4. a kind of air detection according to claim 1 air quick sampling device, which is characterized in that bottom plate (1) material Matter is Q235 steel.
5. a kind of air detection according to claim 1 air quick sampling device, which is characterized in that first motor (22) it is servo motor.
6. a kind of air detection according to claim 1 air quick sampling device, which is characterized in that drawstring (13) is Steel wire rope.
CN201721851528.5U 2017-12-27 2017-12-27 A kind of air detection air quick sampling device Expired - Fee Related CN207894893U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721851528.5U CN207894893U (en) 2017-12-27 2017-12-27 A kind of air detection air quick sampling device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721851528.5U CN207894893U (en) 2017-12-27 2017-12-27 A kind of air detection air quick sampling device

Publications (1)

Publication Number Publication Date
CN207894893U true CN207894893U (en) 2018-09-21

Family

ID=63549768

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201721851528.5U Expired - Fee Related CN207894893U (en) 2017-12-27 2017-12-27 A kind of air detection air quick sampling device

Country Status (1)

Country Link
CN (1) CN207894893U (en)

Similar Documents

Publication Publication Date Title
CN208984379U (en) A kind of garden soil sampler
CN207839541U (en) A kind of food inspection test tube cleaning drying device
CN211085855U (en) Polluted gas extraction device for environmental detection
CN207051038U (en) A kind of gardens sewage disposal Stratified Sampling device
CN107597638A (en) A kind of dust arrester for Internet of Things chamber
CN108709768A (en) A kind of trade effluent distributing sampling device
CN106723709B (en) A kind of portable air quality testing sampling bracelet
CN207894893U (en) A kind of air detection air quick sampling device
CN107966535A (en) A kind of air detection air quick sampling device and its manufacture and the method for sampling
CN208705126U (en) The automatic acquisition device of volatile organic matter in a kind of portable atmosphere
CN207357203U (en) A kind of volley of rifle fire formula is new to freeze pipe clamp
CN200986491Y (en) Automatic leakage detector device for water bottles
CN103630428B (en) A kind of removable gas on-site sample collection device
CN208805395U (en) Unmanned plane water sample acquisition device
CN106770269A (en) A kind of Portable outdoor laboratory Water quality pH value efficient detection pen
CN208621376U (en) A kind of environmental monitoring water-quality sampler
CN202255958U (en) Device for automatically emptying water samples
CN205748992U (en) A kind of customary sample sampler of oil product detection
CN206583637U (en) A kind of novel environmental engineering detects sampler with water quality
CN211954803U (en) Water quality sampler for environmental monitoring
CN219532608U (en) Quantitative sampler for white spirit detection
CN106404526A (en) Hardness detection device of piston ring of engine
CN208672385U (en) A kind of environmental monitoring water-quality sampler
CN206488959U (en) Seawater sampler and seawater sampling system
CN107895529B (en) A kind of physics teaching measurement average speed experimental provision

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20180921

Termination date: 20181227

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