CN209959918U - Ball valve with filter screen - Google Patents
Ball valve with filter screen Download PDFInfo
- Publication number
- CN209959918U CN209959918U CN201920508208.2U CN201920508208U CN209959918U CN 209959918 U CN209959918 U CN 209959918U CN 201920508208 U CN201920508208 U CN 201920508208U CN 209959918 U CN209959918 U CN 209959918U
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- Prior art keywords
- valve ball
- filter screen
- ball
- hole
- box
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- Expired - Fee Related
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 63
- 239000002893 slag Substances 0.000 claims abstract description 42
- 238000007789 sealing Methods 0.000 claims abstract description 17
- 239000010865 sewage Substances 0.000 claims abstract description 13
- 239000012535 impurity Substances 0.000 abstract description 22
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract description 3
- 238000001914 filtration Methods 0.000 abstract description 2
- 239000002245 particle Substances 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 239000007787 solid Substances 0.000 abstract description 2
- 239000013049 sediment Substances 0.000 description 5
- 238000007599 discharging Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005504 petroleum refining Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Taps Or Cocks (AREA)
Abstract
The utility model provides a ball valve with a filter screen, which is characterized in that the ball valve comprises a water inlet pipe, a pipeline filter screen, a slag leakage box, an outer valve ball, a water outlet pipe, a control rod, an inner valve ball, a sealing ring and a sewage discharge box; the pipeline filter screen is arranged in the water inlet pipe and used for filtering solid particles of water passing through the pipeline, so that impurities such as rust dirt and the like are prevented from passing through the valve ball, the damage of the valve is reduced, the service life of the valve is prolonged, and the flexibility of opening and closing is ensured; a slag leakage box is arranged below the pipeline filter screen; the water inlet pipe is connected with the outer valve ball through a flange, the inner valve ball is arranged in the outer valve ball, the valve ball filter screen is arranged in the inner valve ball, the valve ball filter screen further filters impurities in water, the impurities in the water cannot enter the inner valve ball, and the damage probability of the inner valve ball is reduced; a sealing ring is arranged between the inner valve ball and the outer valve ball; the front side of the outer valve ball is provided with a control rod, and the bottom of the outer valve ball is provided with a pollution discharge box.
Description
Technical Field
The utility model relates to a technical field for the water treatment facilities especially relates to a take ball valve of filter screen.
Background
Ball valves are appeared in the 50 th of the 20 th century, and along with the rapid development of the ball valves in science and technology, the continuous improvement of production processes and product structures, the ball valves are rapidly developed into main valves in short 40 years. The use of ball valves is increasing year by year in countries with industrially developed western industries.
In China, the ball valve is widely applied to industries such as petroleum refining, long-distance pipelines, chemical industry, papermaking, pharmacy, water conservancy, electric power, municipal administration, steel and the like, and plays a significant role in national economy. It has the action of rotating 90 degrees, the cock body is a sphere, and a circular through hole or a channel passes through the axis of the cock body. The ball valve is mainly used for cutting off, distributing and changing the flow direction of a medium in a pipeline, and can be closed tightly only by rotating 90 degrees and a small rotating moment.
However, in the conventional ball valve, impurities such as rust and dirt are often contained in a pipeline, so that the valve is damaged, and the valve is not flexible, so that the service life of the ball valve is greatly shortened.
Disclosure of Invention
According to the technical problem, the utility model provides a ball valve with a filter screen, which is characterized in that the ball valve comprises a water inlet pipe, a pipeline filter screen, a slag leakage box, an outer valve ball, a water outlet pipe, a control rod, an inner valve ball, a sealing ring and a pollution discharge box; a pipeline filter screen is arranged in the water inlet pipe, a slag leakage box is arranged below the pipeline filter screen, the water inlet pipe is connected with an outer valve ball through a flange, an inner valve ball is arranged in the outer valve ball, a sealing ring is arranged between the inner valve ball and the outer valve ball, a control rod is arranged on the front side of the outer valve ball, and a sewage discharge box is arranged at the bottom of the outer valve ball;
the left side of the water inlet pipe is provided with a flange A, the inside of the water inlet pipe is provided with a pipeline filter screen which is of an inclined structure, the pipeline filter screen is of an oval structure and is provided with a filter screen ring which is of a convex structure, the inner side of the water inlet pipe is provided with a filter screen groove which is of a concave structure, the filter screen groove corresponds to the position of the filter screen ring, the filter screen groove is in matched connection with the filter screen ring, a slag leakage port is formed below the pipeline filter screen, the slag leakage port is of a convex structure with threads, a slag leakage box is arranged on the lower side of the slag leakage port and is of a concave structure with threads, the slag leakage box is fixed on the lower side of the slag leakage port in a threaded manner, the right side of the water inlet pipe is provided with a flange B, the right side of the flange B is connected with a flange C through a nut, and the, the outer valve ball is composed of a left valve ball and a right valve ball, the left valve ball is of a cylindrical structure, the right valve ball is of a hemispherical structure, the diameter of the right valve ball is the same as that of the left valve ball, a water outlet pipe is arranged on the right side of the right valve ball, the water outlet pipe and the right valve ball are of an integral structure, and a flange D is arranged on the right side of the water outlet pipe; the front side of the outer valve ball is provided with a hole A, a control rod is arranged in the hole A, the control rod consists of a control panel and a control shaft, the control panel is of a circular structure, the control shaft is of a threaded structure, the control shaft is of a cylindrical structure, the diameter of the control shaft is smaller than that of the hole A, the control shaft and the control panel are of an integral structure, the control shaft is connected with the inner valve ball, the front side of the inner valve ball is provided with a hole B, the hole B is of a threaded structure, the diameter of the hole B is the same as that of the control shaft, the hole B is connected with the control shaft in a threaded manner, the inner valve ball is arranged inside the outer valve ball, the diameter of the inner valve ball is smaller than that of the outer valve ball, the inner valve ball is provided with a through hole, the through hole is of a cylindrical structure, the left side of the through hole is provided with a valve ball filter screen, and the, the left side of the valve ball filter screen is provided with a check ring which is of an annular structure, the outer side of the check ring is provided with a threaded structure, the diameter of the check ring is the same as that of the through hole, the contact part of the through hole and the check ring is provided with the threaded structure, and the check ring is connected with the inner valve ball in a threaded mode;
the utility model discloses a valve ball, including outer valve ball, the valve ball is equipped with the internal valve ball, the internal valve ball is provided with the sealing washer with the contact department of outer valve ball, the drain has been seted up to the below of outer valve ball in the sealing washer parcel, the diameter of drain is the same with the diameter of through-hole, the drain is the protrusion structure of taking the screw thread, the blowdown box is installed to the drain downside, the blowdown box is the concave structure of taking the screw thread, the blowdown box is fixed at the drain downside through the screw thread mode.
The utility model has the advantages that: the pipeline filter screen arranged in the water inlet pipe filters solid particles of water passing through the pipeline, so that impurities such as rust dirt and the like are prevented from passing through the valve ball, the damage of the valve is reduced, the service life of the valve is prolonged, and the flexibility of opening and closing is ensured; the pipeline filter screen is of an inclined structure, so that filtered impurities can smoothly fall below the pipeline, the pipeline filter screen is prevented from being attached with impurities, and the problem that the pipeline filter screen is inconvenient to clean is solved; the slag leakage box is used for containing impurities leaked from the slag leakage opening; the slag leakage box is connected with the slag leakage opening in a threaded manner, so that the slag leakage box and the slag leakage opening are more convenient to mount; the convex structure of the filter screen ring of the pipeline filter screen enables the pipeline filter screen to be more conveniently installed; the valve ball filter screen is of a concave hemispherical structure, so that the impurities filtered by the valve ball filter screen can be stored in the valve ball filter screen and cannot float in the water again; the check ring of the valve ball filter screen is connected with the inner valve ball in a threaded manner, so that the valve ball filter screen is convenient to mount; the control shaft is connected with the hole B in a threaded manner, so that the control rod is more conveniently connected with the inner valve ball; no contact point exists between the inner valve ball and the outer valve ball, so that when a worker rotates the control rod, the connection between the control shaft and the hole B cannot be loosened; the sealing ring prevents the phenomenon that water continuously flows due to the fact that a ball valve switch is not used because water in a pipeline passes through the space between the inner valve ball and the outer valve ball; the outer valve ball is provided with a drain outlet which can enable impurities filtered by the valve ball filter screen to be discharged out of the inner valve ball, and the drain box is used for containing the impurities leaked from the drain outlet; the thread structure of the sewage discharging box and the sewage discharging port enables the sewage discharging box and the sewage discharging port to be more conveniently installed; the diameter of the drain outlet is the same as that of the through hole, so that impurities filtered by the valve ball filter screen cannot fall on the drain outlet when being discharged outside the inner valve ball; the control shaft is connected with the inner valve ball in a threaded mode, so that the control rod is more conveniently connected with the inner valve ball.
Drawings
Fig. 1 is a schematic view of the overall structure of a ball valve with a filter screen according to the present invention;
fig. 2 is a cross-sectional view of the ball valve with the filter screen of the present invention;
FIG. 3 is a schematic structural view of a sewage draining port and a sewage draining box of the ball valve with a filtering net of the present invention;
FIG. 4 is a structural diagram of a slag leakage port and a slag leakage box of the ball valve with the filter screen according to the present invention;
fig. 5 is a schematic view of an inner valve ball, an outer valve ball and a control rod of the ball valve with the filter screen according to the present invention;
FIG. 6 is a schematic view of a valve ball strainer of a ball valve with a strainer according to the present invention;
fig. 7 is the schematic structural diagram of the inner valve ball of the ball valve with the filter screen of the present invention.
As shown in the figure, the water inlet pipe comprises a flange A, a flange 2, a water inlet pipe, a pipeline filter screen 3, a filter screen ring 4, a filter screen groove 5, a slag leakage port 6, a slag leakage box 7, a flange B, a flange C9, an outer valve ball 10, a hole A11, a hole 12, a control rod 13, a control shaft 14, a control disc 15, an inner valve ball 16, a through hole 17, a hole B18, a valve ball filter screen 19, a retainer ring 20, a sealing ring 21, a drain outlet 22, a drain box 23, a water outlet pipe 24 and a flange D.
Detailed Description
Example 1
The utility model provides a ball valve with a filter screen, which is characterized in that the ball valve comprises a water inlet pipe 2, a pipeline filter screen 3, a slag leakage box 7, an outer valve ball 10, a water outlet pipe 23, a control rod 12, an inner valve ball 15, a sealing ring 20 and a sewage discharge box 22; a pipeline filter screen 3 is arranged in the water inlet pipe 2, a slag leakage box 7 is arranged below the pipeline filter screen 3, the water inlet pipe 2 is connected with an outer valve ball 10 through a flange, an inner valve ball 15 is arranged in the outer valve ball 10, a sealing ring 20 is arranged between the inner valve ball 15 and the outer valve ball 10, a control rod 12 is arranged on the front side of the outer valve ball 10, and a sewage discharge box 22 is arranged at the bottom of the outer valve ball 10;
flange A1 is installed in the left side of inlet tube 2, the internally mounted of inlet tube 2 has pipeline filter screen 3, pipeline filter screen 3 is the slope structure, pipeline filter screen 3 is oval structure, pipeline filter screen 3 is provided with filter screen circle 4, filter screen circle 4 is protruding type structure, inlet tube 2 inboard is provided with filter screen recess 5, filter screen recess 5 is concave type structure, filter screen recess 5 corresponds with the position of filter screen circle 4, filter screen recess 5 is connected with filter screen circle 4 cooperation, pipeline filter screen 3 has seted up slag leakage mouth 6 below, slag leakage mouth 6 is the protrusion structure who takes the screw thread, slag leakage box 7 is installed to slag leakage mouth 6 downside, slag leakage box 7 is the structure of taking the screw thread, slag leakage box 7 fixes at slag leakage mouth 6 downside through the screw thread mode, inlet tube 2 right side is provided with flange B8, flange B8 right side is connected with flange C9 through the nut, flange C9 right side is provided with outer valve ball 10, outer valve ball 10 is by, The valve comprises a right valve ball, wherein the left valve ball is of a cylindrical structure, the right valve ball is of a hemispherical structure, the diameter of the right valve ball is the same as that of the left valve ball, a water outlet pipe 23 is arranged on the right side of the right valve ball, the water outlet pipe 23 and the right valve ball are of an integrated structure, and a flange D24 is arranged on the right side of the water outlet pipe 23; the front side of the outer valve ball 10 is provided with a hole A11, a control rod 12 is arranged in the hole A11, the control rod 12 consists of a control disc 14 and a control shaft 13, the control disc 14 is of a circular structure, the control shaft 13 is of a threaded structure, the control shaft 13 is of a cylindrical structure, the diameter of the control shaft 13 is smaller than that of the hole A11, the control shaft 13 and the control disc 14 are of an integral structure, the control shaft 13 is connected with the inner valve ball 15, the front side of the inner valve ball 15 is provided with a hole B17, the hole B17 is of a threaded structure, the diameter of the hole B17 is the same as that of the control shaft 13, the hole B17 is connected with the control shaft 13 in a threaded manner, the inner valve ball 15 is arranged inside the outer valve ball 10, the diameter of the inner valve ball 15 is smaller than that of the outer valve ball 10, the inner valve ball 15 is provided with a through hole 16, the through hole 16 is of a cylindrical structure, the left side of the through hole 16 is provided with, the retainer ring 19 is of an annular structure, a thread structure is arranged on the outer side of the retainer ring 19, the diameter of the retainer ring 19 is the same as that of the through hole 16, the contact part of the through hole 16 and the retainer ring 19 is provided with the thread structure, and the retainer ring 19 is connected with the inner valve ball 15 in a thread mode;
the contact department of interior valve ball 15 and outer valve ball 10 is provided with sealing washer 20, and in the 15 outsides of valve ball including the sealing washer 20 parcel, drain 21 has been seted up to the below of outer valve ball 10, and the diameter of drain 21 is the same with the diameter of through-hole 16, and drain 21 is for taking the screwed protruding structure, and blowdown box 22 is installed to drain 21 downside, and blowdown box 22 is for taking the screwed concave structure, and blowdown box 22 passes through the screw thread mode to be fixed at drain 21 downside.
Example 2
When the utility model is used, the valve ball filter screen 18 of the utility model is aligned with the thread structure of the through hole 16 arranged inside the inner valve ball 15, the valve ball filter screen 18 is rotated clockwise, and the valve ball filter screen 18 is arranged on the inner valve ball 15; placing a pipeline filter screen 3 on the right side of a water inlet pipe 2, pushing the pipeline filter screen 3 into the water inlet pipe 2 by a worker until a filter screen ring 4 of the pipeline filter screen 3 is connected with a filter screen groove 5 formed in the water inlet pipe 2, and connecting the pipeline filter screen 3 with the water inlet pipe 2; aligning the control shaft 13 with a hole A11 formed in the front side of the outer valve ball 10, aligning the control shaft 13 with a hole B17 formed in the front side of the inner valve ball 15, supporting the inner valve ball 15 by hand, rotating the control shaft 13 clockwise, and connecting the control rod 12 with the inner valve ball 15; the flange A1 on the left side of the water inlet pipe 2 is connected with the flange of an external pipeline through a nut, the flange B8 on the right side of the water inlet pipe 2 is connected with the flange C9 on the left side of the outer valve ball 10 through a nut, and the flange D24 on the right side of the water outlet pipe 23 is connected with the flange of the external pipeline through a nut; aligning the slag leakage box 7 with the slag leakage opening 6, and rotating the slag leakage box 7 clockwise until the slag leakage box 7 is installed on the water inlet pipe 2; aligning the drain box 22 with the drain outlet 21, and rotating the drain box 22 clockwise until the drain box 22 is mounted on the outer valve ball 10;
the external water flow enters the water inlet pipe 2 through the external pipeline, when the external water flow passes through the pipeline filter screen 3, the pipeline filter screen 3 filters impurities in the external water flow, at the moment, the filtered impurities fall into the slag leaking box 7 under the action of the inclined structure and gravity of the pipeline filter screen 3, when external water flow enters the inner valve ball 15 through the water inlet pipe 2, the sealing ring 20 prevents the external water flow from passing through a gap between the inner valve ball 15 and the outer valve ball 10, when the external water flow passes through the ball valve filter screen, the valve ball filter screen 18 filters impurities in water, so that the impurities cannot enter the inner valve ball 15, the control rod 12 is rotated anticlockwise, the opening direction of the through hole 16 of the inner valve ball 15 is vertical, the valve ball filter screen 18 rotates to the position below the inner valve ball 15 along with the inner valve ball 15, the external water flow stops passing through the inner valve ball 15, and at the moment, the impurities filtered by the valve ball filter screen 18 fall into the sewage discharge box 22 under the action of gravity;
clockwise rotation control lever 12, 16 opening direction of through-hole of interior valve ball 15 this moment are the horizontality, and valve ball filter screen 18 follows interior valve ball 15 and rotates to interior valve ball 15 left side, and external rivers pass through in the through-hole 16 of interior valve ball 15 this moment, and external rivers pass through valve ball filter screen 18 this moment, and valve ball filter screen 18 filters the impurity of aquatic, makes impurity can not enter interior valve ball 15.
Example 3
When the filterable impurity of clearance, will leak sediment box 7 anticlockwise rotation, break away from with leaking sediment mouth 6 until leaking sediment box 7, pull down and leak the impurity clearance that sediment box 7 will leak in the sediment box 7, will blowdown box 22 anticlockwise rotation, break away from until blowdown box 22 and drain 21, pull down blowdown box 22 and clear up the impurity in the blowdown box 22.
Example 4
When the inner valve ball 15 is damaged due to overlong use time, the nut connecting the flange B8 with the flange C9 is unscrewed, the water inlet pipe 2 is separated from the outer valve ball 10 at the moment, the inner valve ball 15 is held by hand, the control rod 12 is rotated anticlockwise until the control shaft 13 is separated from the hole B17 formed in the front side of the inner valve ball 15, the control rod 12 is taken out from the hole A11 formed in the front side of the outer valve ball 10, and at the moment, the inner valve ball 15 is taken out from the outer valve ball 10 for replacement.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. The utility model discloses each part that mentions is the common technique in prior art, and the technical personnel of this trade should understand, the utility model discloses do not receive the restriction of above-mentioned embodiment, the description only is the explanation in above-mentioned embodiment and the description the principle of the utility model, under the prerequisite that does not deviate from the spirit and the scope of the utility model, the utility model discloses still can have various changes and improvement, these changes and improvement all fall into the protection of claim the utility model is within the scope. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. A ball valve with a filter screen is characterized by comprising a water inlet pipe, a pipeline filter screen, a slag leakage box, an outer valve ball, a water outlet pipe, a control rod, an inner valve ball, a sealing ring and a sewage discharge box; a pipeline filter screen is arranged in the water inlet pipe, a slag leakage box is arranged below the pipeline filter screen, the water inlet pipe is connected with an outer valve ball through a flange, an inner valve ball is arranged in the outer valve ball, a sealing ring is arranged between the inner valve ball and the outer valve ball, a control rod is arranged on the front side of the outer valve ball, and a sewage discharge box is arranged at the bottom of the outer valve ball; the left side of the water inlet pipe is provided with a flange A, the pipeline filter screen is of an inclined structure, the pipeline filter screen is provided with a filter screen ring, the filter screen ring is of a convex structure, the inner side of the water inlet pipe is provided with a filter screen groove, the filter screen groove is of a concave structure, the filter screen groove corresponds to the position of the filter screen ring, the filter screen groove is in matched connection with the filter screen ring, a slag leakage port is formed below the pipeline filter screen, the slag leakage port is of a convex structure with threads, a slag leakage box is installed on the lower side of the slag leakage port and is of a concave structure with threads, the slag leakage box is fixed on the lower side of the slag leakage port in a threaded mode, the right side of the water inlet pipe is provided with a flange B, the right side of the flange B is connected with a flange C through nuts, the right side of the flange C is provided with an outer valve ball, the outer valve ball is, the right valve ball is of a hemispherical structure, the diameter of the right valve ball is the same as that of the left valve ball, a water outlet pipe is arranged on the right side of the right valve ball, and a flange D is arranged on the right side of the water outlet pipe; the valve ball comprises an outer valve ball, a control shaft, a control disc, a control shaft, a hole A, a control rod, a control disc and a control shaft, wherein the hole A is formed in the front side of the outer valve ball, the control shaft is of a threaded structure, the diameter of the control shaft is smaller than that of the hole A, the control shaft is connected with an inner valve ball, the hole B is formed in the front side of the inner valve ball, the hole B is of a threaded structure, the diameter of the hole B is the same as that of the control shaft, the hole B is connected with the control shaft in a threaded mode, the diameter of the inner valve ball is smaller than that of the outer valve ball, a through hole is formed in the inner valve ball, the through hole is of a cylindrical structure, a valve ball filter screen is arranged on the left side of the through hole, the valve ball filter screen is of a concave hemispherical structure, a retainer ring is arranged on the left side of the valve ball filter screen, the retainer ring is of an annular structure, a threaded structure is arranged at the contact position of the through hole and the check ring, and the check ring is connected with the inner valve ball in a threaded mode; the utility model discloses a valve ball, including outer valve ball, the valve ball is equipped with the internal valve ball, the internal valve ball is provided with the sealing washer with the contact department of outer valve ball, the drain has been seted up to the below of outer valve ball in the sealing washer parcel, the diameter of drain is the same with the diameter of through-hole, the drain is the protrusion structure of taking the screw thread, the blowdown box is installed to the drain downside, the blowdown box is the concave structure of taking the screw thread, the blowdown box is fixed at the drain downside through the screw thread mode.
2. The ball valve with the filter screen of claim 1, wherein the pipeline filter screen is of an oval structure.
3. The ball valve with the filter screen as claimed in claim 1, wherein the outlet pipe and the right ball valve are of an integral structure, and the control panel is of a circular structure.
4. The ball valve with the filter screen as claimed in claim 1, wherein the control shaft and the control disk are of an integral structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920508208.2U CN209959918U (en) | 2019-04-16 | 2019-04-16 | Ball valve with filter screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920508208.2U CN209959918U (en) | 2019-04-16 | 2019-04-16 | Ball valve with filter screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209959918U true CN209959918U (en) | 2020-01-17 |
Family
ID=69242024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920508208.2U Expired - Fee Related CN209959918U (en) | 2019-04-16 | 2019-04-16 | Ball valve with filter screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209959918U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114754165A (en) * | 2022-05-18 | 2022-07-15 | 江苏恒达机械制造有限公司 | Anti-blocking valve for petroleum conveying equipment |
-
2019
- 2019-04-16 CN CN201920508208.2U patent/CN209959918U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114754165A (en) * | 2022-05-18 | 2022-07-15 | 江苏恒达机械制造有限公司 | Anti-blocking valve for petroleum conveying equipment |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200117 |