CN208885993U - A kind of adjustable shut-off valve - Google Patents
A kind of adjustable shut-off valve Download PDFInfo
- Publication number
- CN208885993U CN208885993U CN201821525290.1U CN201821525290U CN208885993U CN 208885993 U CN208885993 U CN 208885993U CN 201821525290 U CN201821525290 U CN 201821525290U CN 208885993 U CN208885993 U CN 208885993U
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- China
- Prior art keywords
- valve
- vertical tube
- main pipeline
- spool
- rod
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Abstract
The utility model discloses a kind of adjustable shut-off valves, including main pipeline, the both ends of the main pipeline are equipped with first flange, upper end is equipped with the first vertical tube on the right side of the main pipeline, main pipeline inside corresponding with the first vertical tube is equipped with the first spool, the partition upper surface of first spool is equipped with the first valve rod, the upper surface of first valve rod is equipped with card slot, and first valve rod side upper end be equipped with circular slab, the upper surface of circular slab is set there are four equally distributed limit hole, the upper surface of first vertical tube is equipped with second flange, and the upside of the first vertical tube is equipped with valve deck.The adjustable shut-off valve, it can be adjusted by flow velocity of second spool to main pipeline internal liquid, the stability of the second spool can also be improved by guide rod, liquid is avoided to drive the second valve core rotation, and the first spool can be driven indirectly by stepper motor, it can prevent the liquid inside main pipeline from flowing backwards, it is easy to use.
Description
Technical field
The utility model relates to shut-off valve technical field, specially a kind of adjustable shut-off valve.
Background technique
Shut-off valve is also pipe valve, is a kind of one of most popular valve, and why very popular it is, is due to opening and closing
Frictional force is small between sealing surface in the process, relatively durable, Lift is little, and manufacture is easy, easy to maintenance, is applicable not only to
Low pressure, and it is suitable for high pressure, valve plays the important function of cutting and throttling, shut-off valve to the medium in the pipeline where it
As a kind of extremely important truncation class valve, sealing is by applying torque to valve rod, and valve rod is in the axial direction to valve
Valve applies pressure, fits closely valve clack sealing surface with sealing surface of seat, prevents slot leakage of the medium between sealing surface, but
It is that existing shut-off valve can only play the role of shutting off, the flow velocity in pipeline cannot be adjusted, and the liquid in pipeline holds
Easily flow backwards, it is inconvenient to use.
Utility model content
The technical problems to be solved in the utility model is to overcome existing defect, provides a kind of adjustable shut-off valve, can be with
It is adjusted by flow velocity of second spool to main pipeline internal liquid, the stabilization of the second spool can also be improved by guide rod
Property, avoid liquid from driving the second valve core rotation, and can drive indirectly to the first spool by stepper motor, Neng Goufang
Only the liquid inside main pipeline is flow backwards, easy to use, can effectively solve the problems in background technique.
To achieve the above object, the utility model provides the following technical solutions: a kind of adjustable shut-off valve, including supervisor
Road, the both ends of the main pipeline are equipped with first flange, and upper end is equipped with the first vertical tube on the right side of the main pipeline, the main pipeline with
The corresponding inside of first vertical tube is equipped with the first spool, and the partition upper surface of first spool is equipped with the first valve rod, and described first
The upper surface of valve rod is equipped with card slot, and the side upper end of the first valve rod is equipped with circular slab, and the upper surface of the circular slab is equipped with four
A equally distributed limit hole, the upper surface of first vertical tube is equipped with second flange, and the upside of the first vertical tube is equipped with valve deck,
The lower surface of the valve deck is equipped with third flange, and the round hole internal activity of the third flange and second flange is interspersed with fixation
Bolt, the side lower thread of the fixing bolt are connected with nut, and valve deck inner upper end corresponding with limit hole face is right
Side is equipped with positioning device, and the upper surface of the valve deck is equipped with switching group, and it is perpendicular to be equipped with second on the left of the side upper end of the main pipeline
Pipe, main pipeline inside corresponding with the second vertical tube are equipped with the second spool, and the spherical valve body upper end of second spool is equipped with
The side of second valve rod, first valve rod and the second valve rod is equipped with sealing device, and the upper surface of second valve rod is equipped with
Handle, the input terminal of switching group are electrically connected with the output end of external power supply.
As a kind of optimal technical scheme of the utility model, first spool includes partition, the side of the partition
Equipped with through-hole, partition side corresponding with through-hole is equipped with groove, and partition side corresponding with groove is equipped with baffle, institute
The upper end for stating baffle is rotatablely connected with by shaft and partition, and the left side of the baffle and the inside of groove are equipped with annular magnetic
Iron.
As a kind of optimal technical scheme of the utility model, there are four the sealing devices, and four sealing devices are equal
It is divided to two groups to be uniformly distributed respectively in the medial surface of the first vertical tube and the second vertical tube.
As a kind of optimal technical scheme of the utility model, the sealing device includes sealing plate, first vertical tube
It is fixedly connected with the lateral surface of sealing plate with the medial surface of the second vertical tube, the upper surface middle part of first vertical tube is equipped with sealing
The lateral surface of bearing, first valve rod and the second valve rod passes through sealing bearing and sealing plate is rotatablely connected.
As a kind of optimal technical scheme of the utility model, the interior lower end Middle face of the valve deck is equipped with motor cabinet,
The lower surface of motor cabinet is equipped with stepper motor, and the output shaft of the stepper motor and card slot activity are clamped, and stepper motor is defeated
Enter end to be electrically connected with the output end of switching group.
As a kind of optimal technical scheme of the utility model, the positioning device includes electric telescopic rod, described electronic
The fixing end of telescopic rod is fixedly connected with the interior lower end face of valve deck, and the telescopic end of electric telescopic rod is equipped with mounting plate, described
The lower surface of mounting plate is equipped with locating rod, and the input terminal of electric telescopic rod is electrically connected with the output end of switching group.
As a kind of optimal technical scheme of the utility model, second spool includes spherical valve body, the globe valve
The side of body is equipped with the first round hole and equally distributed second round hole, the angle of first round hole and the second round hole
It is 90 degree.
As a kind of optimal technical scheme of the utility model, there are six second round holes, and six second round
Hole is in distributed rectangular in the side of spherical valve body, and the diameter of axle of the second round hole is less than the diameter of axle of the first round hole.
As a kind of optimal technical scheme of the utility model, the upper surface right end of the handle is equipped with location hole, described
The internal activity of location hole is interspersed with guide rod, and the side of second vertical tube sets that there are two abutment sleeve, the lower ends of the guide rod
It is clamped with abutment sleeve activity.
As a kind of optimal technical scheme of the utility model, the side upper end of second valve rod is equipped with bearing, described
The outer ring of bearing is fixedly connected with the upper surface of the second vertical tube.
Compared with prior art, the utility model has the beneficial effects that
1, this adjustable shut-off valve, can play the role of unidirectionally separating, make by baffled partition to main pipeline
Liquid in main pipeline can only one-way flow, while can play the role of separating main pipeline, to play cut-off to main pipeline
Effect, and baffle can be improved to the sealing effect of partition by the mutual absorption of two annular magnets.
2, this adjustable shut-off valve can drive the rotation of the first valve rod by stepper motor, drive the first valve rod
Partition rotation, so that the position of partition baffle be adjusted, convenient for the flow direction to adjusting main pipeline internal liquid into
Row is adjusted, and can also push mounting plate and locating rod mobile by electric telescopic rod, to carry out to circular slab and the first valve rod
It is fixed, prevent the first valve rod and the first valve core rotation.
3, this adjustable shut-off valve can rotate the second valve rod by handle, the second valve rod is allow to drive top dome valve body
Rotation is played so that the position of the first round hole and the second round hole be adjusted and adjusts main pipeline internal liquid flow velocity
Effect can also be sealed the first vertical tube and the second vertical tube by the sealing plate with sealing bearing, prevent liquid from overflowing.
4, this adjustable shut-off valve, can be adjusted by flow velocity of second spool to main pipeline internal liquid, may be used also
To improve the stability of the second spool by guide rod, liquid is avoided to drive the second valve core rotation, and stepper motor can be passed through
The first spool is driven indirectly, can prevent the liquid inside main pipeline from flowing backwards, it is easy to use.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model；
Fig. 2 is the utility model structure elevational schematic view.
In figure: 1 main pipeline, 2 first flanges, 3 first spools, 31 partitions, 32 through-holes, 33 baffles, 34 shafts, 35 annular magnetics
Iron, 4 first vertical tubes, 41 first valve rods, 42 second flanges, 43 card slots, 5 sealing devices, 51 sealing plates, 52 sealing bearings, 6 valves
Lid, 61 stepper motors, 62 switching groups, 63 third flanges, 7 positioning devices, 71 electric telescopic rods, 72 mounting plates, 73 locating rods, 8
Second spool, 81 spherical valve bodies, 82 first round holes, 83 second round holes, 9 second vertical tubes, 91 second valve rods, 92 handles, 93
Bearing, 10 location holes, 11 guide rods, 12 abutment sleeves, 13 fixing bolts, 14 nuts, 15 circular slabs.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
The utility model provides a kind of technical solution referring to FIG. 1-2: a kind of adjustable shut-off valve, including main pipeline 1,
The both ends of main pipeline 1 are equipped with first flange 2, and 1 right side upper end of main pipeline is equipped with the first vertical tube 4, main pipeline 1 and the first vertical tube 4
Corresponding inside is equipped with the first spool 3, and the first spool 3 includes partition 31, and the side of partition 31 is equipped with through-hole 32, partition 31 and logical
The corresponding side in hole 32 is equipped with groove, and the side corresponding with groove of partition 31 is equipped with baffle 33, the upper end of baffle 33 and by turning
Axis 34 and partition 31 are rotatablely connected, and the left side of baffle 33 and the inside of groove are equipped with annular magnet 35, can be by having
The partition 31 of baffle 33 plays the role of unidirectionally separating to main pipeline 1, make liquid in main pipeline 1 can only one-way flow, simultaneously
It can play the role of separating main pipeline 1, to play cut-off to main pipeline 1, and two annular magnets can be passed through
35 mutual absorption improves baffle 33 to the sealing effect of partition 31, and water liquid pushes baffle 33, makes two annular magnetics
Iron 35 separates, to make liquid in 32 internal flow of through-hole, controls stepper motor 61 by switching group 62 and rotates 180 degree,
Stepper motor 61 drives the rotation of the first valve rod 41, and the first valve rod 41 rotates 180 degree with dynamic dividing plate 31 and baffle 33, liquid
To 33 reverse extrusion of baffle, adsorb two annular magnets 35, so as to play the role of shutting off to liquid, the first spool 3
31 upper surface of partition be equipped with the first valve rod 41, the upper surface of the first valve rod 41 is equipped with card slot 43, and the side of the first valve rod 41
Upper end is equipped with circular slab 15, and the upper surface of circular slab 15 is set there are four equally distributed limit hole, and the upper surface of the first vertical tube 4 is set
There is second flange 42, and the upside of the first vertical tube 4 is equipped with valve deck 6, the lower surface of valve deck 6 is equipped with third flange 63, third flange
63 and the round hole internal activity of second flange 42 be interspersed with fixing bolt 13, the side lower thread of fixing bolt 13 is connected with
Second flange 42 can be fixedly connected, thus by valve deck 6 by nut 14 by fixing bolt 13 with nut 14 with third flange 63
Upper end fixed to the first vertical tube 4, the interior lower end Middle face of valve deck 6 are equipped with motor cabinet, and the lower surface of motor cabinet is equipped with stepping
Motor 61, the 43 activity clamping of output shaft and card slot of stepper motor 61, and the input terminal of stepper motor 61 are defeated with switching group 62
Outlet electrical connection can drive the rotation of the first valve rod 41 by stepper motor 61, allow the first valve rod 41 with 31 turns of dynamic dividing plate
It is dynamic, to the position of partition 31 and baffle 33 be adjusted, convenient for being carried out to the flow direction for adjusting 1 internal liquid of main pipeline
It adjusts, the inner upper end right side of face corresponding with limit hole of valve deck 6 is equipped with positioning device 7, and positioning device 7 includes electric telescopic rod
71, the fixing end of electric telescopic rod 71 is fixedly connected with the interior lower end face of valve deck 6, and the telescopic end of electric telescopic rod 71 is equipped with
The lower surface of mounting plate 72, mounting plate 72 is equipped with locating rod 73, can push mounting plate 72 and positioning by electric telescopic rod 71
Bar 73 is mobile, so that circular slab 15 and the first valve rod 41 be fixed, prevents the first valve rod 41 and the first spool 3 from rotating, and
The input terminal of electric telescopic rod 71 is electrically connected with the output end of switching group 62, and the upper surface of valve deck 6 is equipped with switching group 62, main pipeline
The second vertical tube 9 is equipped on the left of 1 side upper end, the inside corresponding with the second vertical tube 9 of main pipeline 1 is equipped with the second spool 8, the second valve
Core 8 includes spherical valve body 81, and the side of spherical valve body 81 is equipped with the first round hole 82 and equally distributed second round hole 83, the
The angle of one round hole 82 and the second round hole 83 is 90 degree, and there are six the second round holes 83, and six the second round holes 83
It is in distributed rectangular in the side of spherical valve body 81, and the diameter of axle of the second round hole 83 is less than the diameter of axle of the first round hole 82, second
81 upper end of spherical valve body of spool 8 is equipped with the second valve rod 91, and the side upper end of the second valve rod 91 is equipped with bearing 93, bearing 93 it is outer
Circle is fixedly connected with the upper surface of the second vertical tube 9, and the side of the first valve rod 41 and the second valve rod 91 is equipped with sealing device 5, close
There are four seal apparatus 5, and four sealing devices 5 are divided equally two groups and uniformly divided in the medial surface of the first vertical tube 4 and the second vertical tube 9 respectively
Cloth, sealing device 5 include sealing plate 51, and lateral surface of the medial surface of the first vertical tube 4 and the second vertical tube 9 with sealing plate 51 is fixed
Connection, the upper surface middle part of the first vertical tube 4, which is equipped with, seals bearing 52, and the lateral surface of the first valve rod 41 and the second valve rod 91 passes through
Bearing 52 and sealing plate 51 is sealed to be rotatablely connected, it can be by the sealing plate 51 with sealing bearing 52 to the first vertical tube 4 and the
Two vertical tubes 9 are sealed, and prevent liquid from overflowing, and the upper surface of the second valve rod 91 is equipped with handle 92, can be rotated by handle 92
Second valve rod 91 allows the second valve rod 91 that top dome valve body 81 to be driven to rotate, thus to the first round hole 82 and the second round hole
83 position is adjusted, and plays the role of adjusting 1 internal liquid flow velocity of main pipeline, the upper surface right end of handle 92 is equipped with positioning
Hole 10, the internal activity of location hole 10 are interspersed with guide rod 11, and the side of the second vertical tube 9 sets that there are two abutment sleeve 12, guide rods 11
Lower end and the activity of abutment sleeve 12 be clamped, the input terminal of switching group 62 is electrically connected with the output end of external power supply, switching group 62
It is equipped with control button corresponding with stepper motor 61 and electric telescopic rod 71, shut-off valve is entirely adjusted, second can be passed through
The flow velocity of 1 internal liquid of main pipeline is adjusted in spool 8, and the stability of the second spool 8 can also be improved by guide rod 11, is kept away
Exempt from liquid and drive the rotation of the second spool 8, and the first spool 3 can be driven indirectly by stepper motor 61, Neng Goufang
Only the liquid inside main pipeline 1 is flow backwards, easy to use.
When in use: being connect by 2 main pipelines 1 of first flange with external pipe, when needing to adjust to flow rate of liquid
When section, swing handle 92, handle 92 drives spherical valve body 81 to rotate by the second valve rod 91, thus to the first round hole 82 and the
The position of two round holes 83 is adjusted, and so that liquid is circulated by the first round hole 82 or the second round hole 83, thus right
The flow velocity of liquid is adjusted, and then guide rod 11 is inserted into location hole 10, and blocks the lower end of guide rod 11 and abutment sleeve 12
It connects, when needing to shut off to liquid, stepper motor 61 is controlled by switching group 62 and is worked, stepper motor 61 drives the
One valve rod 41 rotation, the first valve rod 41 with dynamic dividing plate 31 rotate, partition 31 drive 33 turns of baffle, allow liquid to baffle 33 into
Row squeezes, and fixes two absorption of annular magnet 35, to shut off to liquid, is then controlled by switching group 62 electronic
Telescopic rod 71 extends, and electric telescopic rod 71 pushes mounting plate 72 and locating rod 73 mobile, locating rod 73 and 15 surface of circular slab
Limit hole clamping, to be fixed indirectly to limit plate 13.
The utility model can be adjusted by flow velocity of second spool 8 to 1 internal liquid of main pipeline, can also be passed through
Guide rod 11 improves the stability of the second spool 8, avoids liquid from driving the rotation of the second spool 8, and can pass through stepper motor 61
The first spool 3 is driven indirectly, can prevent the liquid inside main pipeline 1 from flowing backwards, it is easy to use.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (10)
1. a kind of adjustable shut-off valve, including main pipeline (1), it is characterised in that: the both ends of the main pipeline (1) are equipped with first
Flange (2), main pipeline (1) right side upper end are equipped with the first vertical tube (4), and the main pipeline (1) is corresponding with the first vertical tube (4)
Inside is equipped with the first spool (3), and partition (31) upper surface of first spool (3) is equipped with the first valve rod (41), and described first
The upper surface of valve rod (41) is equipped with card slot (43), and the side upper end of the first valve rod (41) is equipped with circular slab (15), the circle
The upper surface of plate (15) is set there are four equally distributed limit hole, and the upper surface of first vertical tube (4) is equipped with second flange
(42), and the upside of the first vertical tube (4) is equipped with valve deck (6), and the lower surface of the valve deck (6) is equipped with third flange (63), described
Third flange (63) and the round hole internal activity of second flange (42) are interspersed with fixing bolt (13), the fixing bolt (13)
Side lower thread be connected with nut (14), the valve deck (6) inner upper end right side of face corresponding with limit hole is equipped with positioning
The upper surface of device (7), the valve deck (6) is equipped with switching group (62), and second is equipped on the left of the side upper end of the main pipeline (1)
Vertical tube (9), the main pipeline (1) inside corresponding with the second vertical tube (9) are equipped with the second spool (8), second spool (8)
Spherical valve body (81) upper end is equipped with the second valve rod (91), and the side of first valve rod (41) and the second valve rod (91) is equipped with close
Seal apparatus (5), the upper surface of second valve rod (91) are equipped with handle (92), the input terminal of switching group (62) and external power supply
Output end electrical connection.
2. a kind of adjustable shut-off valve according to claim 1, it is characterised in that: first spool (3) includes partition
(31), the side of the partition (31) is equipped with through-hole (32), the partition (31) side corresponding with through-hole (32) equipped with groove,
The partition (31) side corresponding with groove is equipped with baffle (33), the upper end of the baffle (33) with by shaft (34) with every
Plate (31) rotation connection, the left side of the baffle (33) and the inside of groove are equipped with annular magnet (35).
3. a kind of adjustable shut-off valve according to claim 1, it is characterised in that: there are four the sealing devices (5), and
Four sealing devices (5) are divided equally two groups and are uniformly distributed respectively in the medial surface of the first vertical tube (4) and the second vertical tube (9).
4. a kind of adjustable shut-off valve according to claim 1, it is characterised in that: the sealing device (5) includes sealing
The medial surface of plate (51), first vertical tube (4) and the second vertical tube (9) is fixedly connected with the lateral surface of sealing plate (51), institute
The upper surface middle part for stating the first vertical tube (4) is equipped with sealing bearing (52), first valve rod (41) and the second valve rod (91) outside
Side passes through sealing bearing (52) and sealing plate (51) are rotatablely connected.
5. a kind of adjustable shut-off valve according to claim 1, it is characterised in that: the interior lower end face of the valve deck (6)
Middle part is equipped with motor cabinet, and the lower surface of motor cabinet is equipped with stepper motor (61), the output shaft and card slot of the stepper motor (61)
(43) activity clamping, and the input terminal of stepper motor (61) is electrically connected with the output end of switching group (62).
6. a kind of adjustable shut-off valve according to claim 1, it is characterised in that: the positioning device (7) includes electronic
The fixing end of telescopic rod (71), the electric telescopic rod (71) is fixedly connected with the interior lower end face of valve deck (6), and electric expansion
The telescopic end of bar (71) is equipped with mounting plate (72), and the lower surface of the mounting plate (72) is equipped with locating rod (73), and electric expansion
The input terminal of bar (71) is electrically connected with the output end of switching group (62).
7. a kind of adjustable shut-off valve according to claim 1, it is characterised in that: second spool (8) includes spherical shape
The side of valve body (81), the spherical valve body (81) is equipped with the first round hole (82) and equally distributed second round hole (83),
The angle of first round hole (82) and the second round hole (83) is 90 degree.
8. a kind of adjustable shut-off valve according to claim 7, it is characterised in that: second round hole (83) has six
It is a, and six the second round holes (83) are in distributed rectangular, and the diameter of axle of the second round hole (83) in the side of spherical valve body (81)
Less than the diameter of axle of the first round hole (82).
9. a kind of adjustable shut-off valve according to claim 1, it is characterised in that: the upper surface right end of the handle (92)
Equipped with location hole (10), the internal activity of the location hole (10) is interspersed with guide rod (11), and the side of second vertical tube (9) is set
There are two abutment sleeve (12), the lower end of the guide rod (11) and abutment sleeve (12) activity are clamped.
10. a kind of adjustable shut-off valve according to claim 1, it is characterised in that: the side of second valve rod (91)
Upper end is equipped with bearing (93), and the outer ring of the bearing (93) is fixedly connected with the upper surface of the second vertical tube (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821525290.1U CN208885993U (en) | 2018-09-18 | 2018-09-18 | A kind of adjustable shut-off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821525290.1U CN208885993U (en) | 2018-09-18 | 2018-09-18 | A kind of adjustable shut-off valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208885993U true CN208885993U (en) | 2019-05-21 |
Family
ID=66512800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821525290.1U Expired - Fee Related CN208885993U (en) | 2018-09-18 | 2018-09-18 | A kind of adjustable shut-off valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208885993U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869763A (en) * | 2018-09-18 | 2018-11-23 | 江苏海纬集团有限公司 | A kind of adjustable shut-off valve |
| CN110480926A (en) * | 2019-08-14 | 2019-11-22 | 安徽国晶微电子有限公司 | Integrated circuit plastic packaging is molded into injection device |
| CN110702462A (en) * | 2019-09-30 | 2020-01-17 | 山东科技大学 | Detachable simultaneous sampling device for experiments |
-
2018
- 2018-09-18 CN CN201821525290.1U patent/CN208885993U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869763A (en) * | 2018-09-18 | 2018-11-23 | 江苏海纬集团有限公司 | A kind of adjustable shut-off valve |
| CN108869763B (en) * | 2018-09-18 | 2023-11-17 | 江苏海纬集团有限公司 | Adjustable stop valve |
| CN110480926A (en) * | 2019-08-14 | 2019-11-22 | 安徽国晶微电子有限公司 | Integrated circuit plastic packaging is molded into injection device |
| CN110702462A (en) * | 2019-09-30 | 2020-01-17 | 山东科技大学 | Detachable simultaneous sampling device for experiments |
| CN110702462B (en) * | 2019-09-30 | 2021-12-24 | 山东科技大学 | Detachable simultaneous sampling device for experiments |
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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: 20190521 Termination date: 20210918 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |