CN104948789B - Pressure relief device - Google Patents
Pressure relief device Download PDFInfo
- Publication number
- CN104948789B CN104948789B CN201410114891.3A CN201410114891A CN104948789B CN 104948789 B CN104948789 B CN 104948789B CN 201410114891 A CN201410114891 A CN 201410114891A CN 104948789 B CN104948789 B CN 104948789B
- Authority
- CN
- China
- Prior art keywords
- pressure relief
- absorbent strip
- magnetism absorbent
- relief plate
- main part
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/164—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side and remaining closed after return of the normal pressure
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
- Safety Valves (AREA)
Abstract
A kind of pressure relief device, comprising: inflation main part has the pressure relief opening being in communication with the outside, and one end that pressure relief opening is used to contact with the external world is connection end, and the other end is free end；The side that inflation main part is used to contact with the external world is equipped with the first magnetism absorbent strip, and the first magnetism absorbent strip is located at below pressure relief opening；Pressure relief plate, sealing connection end, one end that pressure relief plate is located above are rotatably connected with position of the inflation main body section above pressure relief opening, and the second magnetism absorbent strip is equipped at the pressure relief plate part Chong Die with the first magnetism absorbent strip, and the second magnetism absorbent strip and the first magnetism absorbent strip are attracted.Pressure relief device accuracy rate with higher and it is able to achieve Wind Volume pressure release.
Description
Technical field
The present invention relates to pressure release technical fields, more particularly to a kind of pressure relief device.
Background technique
It is inside and outside there are when draught head in big volume sealing space or channel (for example, pneumatic membrane building), to guarantee safety, need
Pressure difference is limited in a certain range.Traditional pressure relief device capacity is too small, is not suitable for such situation.Existing great Rong
Product sealing space or channel limit the draught head inside and outside it using control electronics.But control electronics exist centainly
Fault rate, once its control system failure may bring very big security risk.
Summary of the invention
Based on this, it is necessary to it is higher and be able to achieve the pressure relief device of Wind Volume pressure release to provide a kind of accuracy rate.
A kind of pressure relief device, comprising:
Main part is inflated, there is the pressure relief opening being in communication with the outside, one end that the pressure relief opening is used to contact with the external world is to connect
Go side, the other end are free end；The inflation main part is used for the side that contact of the external world equipped with the first magnetism absorbent strip, and described first
Magnetism absorbent strip is located at below the pressure relief opening；And
Pressure relief plate seals the connection end, and one end that the pressure relief plate is located above and the inflation main body section are in institute
It states the position above pressure relief opening to be rotatably connected, the second magnetic is equipped at the pressure relief plate part Chong Die with first magnetism absorbent strip
Item is inhaled, second magnetism absorbent strip and first magnetism absorbent strip are attracted.
It in one of the embodiments, further include the sealing strip set on the pressure relief plate close to the side of the pressure relief opening,
The sealing strip and second magnetism absorbent strip cooperatively form with the sealing ring of the bore cooperation for being connected to end, the sealing ring with
The inner wall at the connection end abuts.
The bore of the free end is less than the bore at the connection end in one of the embodiments,.
The end face at the connection end and the end face of the free end are rectangle in one of the embodiments,；The company
Go side is obliquely installed towards the free end, and the end face at the connection end and the distance between the end face of the free end are from upper
It is gradually increased under and.
The inflation main part is equipped with the pressure relief plate place of being rotatably connected for fixing in one of the embodiments,
The bolt of hinge, the pressure relief plate are rotatably connected by hinge and the bolt with the inflation main part.
In one of the embodiments, further include the sliding slot on side of the pressure relief plate far from the pressure relief opening with
And for carrying additionally the connecting rod of counterweight in the sliding slot, the connecting rod is axially slidable along the sliding slot.
The pressure relief plate is cuboid in one of the embodiments, and the sliding slot is located at the pressure relief plate close to institute
One end of the second magnetism absorbent strip is stated, and the sliding slot is located on the center line of the pressure relief plate；Wherein, the central axis is in institute
State the upper end and lower end of pressure relief plate, and the center of the excessively described pressure relief plate.
The connecting rod is arranged in one end in the sliding slot with stage portion, the connecting rod in one of the embodiments,
The inner wall of the stage portion and the sliding slot is locked by housing pin one end outside the sliding slot.
It in one of the embodiments, further include the unidirectional thermometer screen set on the free end.
First magnetism absorbent strip is magnetic stripe or iron bar in one of the embodiments, and second magnetism absorbent strip is magnetic stripe；Or
Person, first magnetism absorbent strip are magnetic stripe, and second magnetism absorbent strip is iron bar.
The working principle of above-mentioned pressure relief device are as follows: when inflation main part and extraneous draught head are in setting pressure limit
When, the first magnetism absorbent strip and the second magnetism absorbent strip are in attracting state, and pressure relief opening is sealed by pressure relief plate；Wherein, setting pressure is by letting out
What the suction-combining force between torque and the second magnetism absorbent strip and the first magnetism absorbent strip that pressing plate generates codetermined.When inflation main part with
Extraneous draught head is more than setting pressure, and the first magnetism absorbent strip is separated with the second magnetism absorbent strip, between magnetic force be reduced to zero, pressure relief plate
It can dig upwards under the influence of air pressure, inflation main part is in communication with the outside by pressure relief opening, starts pressure release.Wherein, work as inflation
When the equalising torque that the air pressure in main part generates the torque that pressure relief plate acts on pressure relief plate, pressure relief plate is parked in fixed position.
When the air pressure in inflation main part is gradually decrease to setting pressure, the torque that the air pressure in main part acts on pressure relief plate is inflated
Less than the torque that pressure relief plate generates, pressure relief plate is fallen after rise, and when into magnetic force range, pressure relief plate is in the moment loading of itself and second
The actuation effect of magnetism absorbent strip and the first magnetism absorbent strip is lower to restore to original state, and pressure release terminates.
Above-mentioned pressure relief device opens pressure release and terminates pressure release and determined by itself, can be realized without using control electronics
Releasing pressure automatically, accuracy rate with higher.And in pressure release, the degree that pressure relief plate is dug upwards is by the gas in inflation main part
It presses the torque of the torque and pressure relief plate generation that act on pressure relief plate to determine, is let out so that above-mentioned pressure relief device is able to achieve Wind Volume
Pressure, capacity are big.
The suction-combining force between second magnetism absorbent strip and the first magnetism absorbent strip is related with its length, therefore, by selecting different length
The second magnetism absorbent strip and the first magnetism absorbent strip, the available pressure relief device with different set pressure, to meet different applications
Demand.Since the second magnetism absorbent strip and the first magnetism absorbent strip distance more early work are firmly bigger, setting pressure, which is consistently greater than, is closed pressure
Power, so as to effectively avoid cause pressure relief plate frequently to be opened because of the close setting pressure of the air pressure in inflation main part from asking
Topic, and then increase the stability of above-mentioned pressure relief device control pressure release.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the pressure relief device of an embodiment；
Fig. 2 be Fig. 1 in assembled after pressure relief plate structural schematic diagram.
Specific embodiment
To facilitate the understanding of the present invention, pressure relief device of the invention is more fully retouched below with reference to relevant drawings
It states.Presently preferred embodiments of the present invention is given in attached drawing.But the present invention can be realized with many different forms, and unlimited
In embodiment described herein.On the contrary, purpose of providing these embodiments is makes understanding to the disclosure
It is more thorough and comprehensive.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more phases
Any and all combinations of the listed item of pass.
As shown in Figures 1 and 2, the pressure relief device 10 of an embodiment, including it is inflation main part 100, pressure relief plate 200, close
Strip of paper used for sealing 300, sliding slot 400, connecting rod 500, counterweight 600 and unidirectional thermometer screen 700.
Inflation main part 100 has the pressure relief opening 110 being in communication with the outside.Pressure relief opening 110 is used for the one end contacted with the external world
To be connected to end 112, the other end is free end 114.The side that inflation main part 100 is used to contact with the external world is equipped with the first magnetism absorbent strip
120, in the vertical direction, the first magnetism absorbent strip 120 is located at 110 lower section of pressure relief opening.Wherein, free end 114 is high-voltage end, is connected to end
112 be low-pressure end.
In the present embodiment, inflation main part 100 is pneumatic membrane building.It is appreciated that in other embodiments, inflation
Main part 100 or other big volume sealing spaces or channel.
In the present embodiment, the bore of free end 114 is less than the bore at connection end 112, consequently facilitating quick pressure releasing.It can
To understand, in other embodiments, the bore at 110 both ends of pressure relief opening can be identical.
Further, in the present embodiment, the end face of the end face and free end 112 that are connected to end 112 is rectangle, thus just
In 110 machine-shaping of pressure relief opening.It is appreciated that in other embodiments, the end face at 110 both ends of pressure relief opening may be positive six
Side shape etc..
Further, in the present embodiment, connection end 112 is obliquely installed towards free end 114, and is connected to the end at end 112
The distance between face and the end face of free end 114 gradually increase from top to down.So as to preferably control pressure relief plate 200 in air pressure
Under the action of the case where digging upwards.
The connection end 112 of the sealing pressure relief opening 110 of pressure relief plate 200.In the vertical direction, pressure relief plate 200 be located above one
The position for being located at 110 top of pressure relief opening with inflation main part 110 is held to be rotatably connected.120 weight of pressure relief plate 200 and the first magnetism absorbent strip
The second magnetism absorbent strip 210 is equipped at folded part.Second magnetism absorbent strip 210 and the first magnetism absorbent strip 120 are attracted.In the present embodiment,
Pressure relief plate 200 is cuboid.
In the present embodiment, the side of the close inflation main part 100 of one end that pressure relief plate 200 is located above is equipped with
Hinge 220, inflation main part 100, which is located at the bolt being equipped at the position of 110 top of pressure relief opening for fixing hinge 220, (schemes not
Mark).Pressure relief plate 200 is rotatably connected by hinge 220 and bolt with inflation main part 100.It is appreciated that in other embodiment party
In formula, pressure relief plate 200 can also be rotatably connected by pin etc. and inflation main part 100.
In the present embodiment, the first magnetism absorbent strip 120 and the second magnetism absorbent strip 210 are magnetic stripe.It is appreciated that in other realities
It applies in mode, one of the first magnetism absorbent strip 120 and the second magnetism absorbent strip 210 are magnetic stripe, and another one is iron bar.
Sealing strip 300 is set to pressure relief plate 200 on the side of pressure relief opening 110.Sealing strip 300 and the second magnetism absorbent strip 210
Cooperatively form the sealing ring cooperated with the bore for being connected to end 112.Sealing ring is abutted with the inner wall at connection end 112, with pressure relief plate 200
Further sealing is connected to end 112 for cooperation.It is appreciated that in other embodiments, sealing ring can be formed by sealing strip 300,
Sealing ring and the second magnetism absorbent strip 210 are two independent components.
Sliding slot 400 is set on side of the pressure relief plate 200 far from pressure relief opening 110.Connecting rod 500 is set in sliding slot 400, for adding
Hang counterweight 600.So as to change the generation of pressure relief plate 200 by the counterweight 600 for carrying additionally different weight on pressure relief plate 200
Torque, and then adjust setting pressure.
Further, in the present embodiment, connecting rod 500 along the chute 400 it is axially slidable.So as to by adjusting even
Position of the bar 500 in sliding slot 400, namely the opposite position by changing counterweight 600 and pressure relief plate 200, to change pressure release
The torque that plate 200 generates, and then further adjust setting pressure.
Further, in the present embodiment, connecting rod 500, which is arranged in one end in sliding slot 400, has stage portion (not shown),
Connecting rod 500 is located at one end housing pin outside sliding slot 400 and locks the inner wall of stage portion and sliding slot 400.Housing pin simultaneously
Occur housing pin relaxation to prevent housing pin aging due to long-time uses with floor clip and cause 500 position of connecting rod
The problem of sliding.
Further, in order to enable the weight distribution of pressure relief plate 200 is relatively more uniform, in the present embodiment, sliding slot 400
In pressure relief plate 200 close to one end of the second magnetism absorbent strip 210, and sliding slot 400 is located on the center line of pressure relief plate 200.Wherein.Center
Line perpendicular to pressure relief plate 200 upper end and lower end, and cross pressure relief plate 200 center.
Further, in the present embodiment, in the vertical direction, sliding slot 400 is located on the second magnetism absorbent strip 210, with second
Magnetism absorbent strip 210 is vertically arranged.
Unidirectional thermometer screen 700 is set at free end 114, is let out so that the foreign matter effectivelying prevent in inflation main part 100 enters
300 position of sealing strip in mouth 110 is pressed, the probability for leading to failure because of poor sealing effect is reduced.
The working principle of above-mentioned pressure relief device 10 are as follows: when inflation main part 100 and extraneous draught head are in setting pressure model
When enclosing interior, the first magnetism absorbent strip 120 and the second magnetism absorbent strip 210 are in attracting state, and pressure relief opening 110 is sealed by pressure relief plate 200；Its
In, setting pressure is the actuation between the torque generated by pressure relief plate 200 and the second magnetism absorbent strip 210 and the first magnetism absorbent strip 120
What power codetermined.When inflation main part 100 and extraneous draught head are more than setting pressure, the first magnetism absorbent strip 120 and the second magnetic
Item 210 is inhaled to separate, between magnetic force be reduced to zero, pressure relief plate 200 can be dug upwards under the influence of air pressure, inflate main part
100 are in communication with the outside by pressure relief opening 110, start pressure release.Wherein, when pressure relief plate 200 is made in the air pressure in inflation main part 100
When the equalising torque that torque and pressure relief plate 200 generate, pressure relief plate 200 is parked in fixed position.When in inflation main part 100
When air pressure is gradually decrease to setting pressure, the air pressure inflated in main part 100 is less than pressure relief plate to the torque that pressure relief plate 200 acts on
200 torques generated, pressure relief plate 200 are fallen after rise, and when into magnetic force range, pressure relief plate 200 is in the moment loading of itself and second
The actuation effect of magnetism absorbent strip 210 and the first magnetism absorbent strip 120 is lower to restore to original state, and pressure release terminates.
Above-mentioned pressure relief device 10 opens pressure release and terminates pressure release and determined by itself, can be real without using control electronics
Existing releasing pressure automatically, accuracy rate with higher.And in pressure release, the degree that pressure relief plate 200 is dug upwards is by inflation main part
Air pressure in 100 determines the torque of torque and the generation of pressure relief plate 200 that pressure relief plate 200 acts on, so that above-mentioned pressure release fills
It sets 10 and is able to achieve Wind Volume pressure release, capacity is big.
The suction-combining force between second magnetism absorbent strip 210 and the first magnetism absorbent strip 120 is related with its length, therefore, by selecting not
With the second magnetism absorbent strip 210 and the first magnetism absorbent strip 120 of length, the available pressure relief device with different set pressure, with full
The different application demand of foot.It can be by carrying additionally the counterweight 600 of different weight, adjusting the opposite position of counterweight 600 and pressure relief plate 200
It the modes such as sets to change the torque of the generation of pressure relief plate 200, and then further adjusts setting pressure.Due to the second magnetism absorbent strip 210 with
First magnetism absorbent strip 120 is firmly bigger apart from more early work, and therefore, setting pressure is consistently greater than clossing pressure, so as to effectively keep away
Exempt from the problem of causing pressure relief plate 200 frequently to be opened due to the close setting pressure of the air pressure in inflation main part 100, and then in increase
State the stability of pressure relief device control pressure release.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
Limitations on the scope of the patent of the present invention therefore cannot 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, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (6)
1. a kind of pressure relief device characterized by comprising
Main part is inflated, the inflation main part is pneumatic membrane building, and the inflation main part has the pressure relief opening being in communication with the outside,
One end that the pressure relief opening is used to contact with the external world is connection end, and the other end is free end；The inflation main part be used for it is outer
The side of boundary's contact is equipped with the first magnetism absorbent strip, and first magnetism absorbent strip is located at below the pressure relief opening；And
Pressure relief plate, seals the connection end, and one end that the pressure relief plate is located above is let out with the inflation main body section in described
Position above pressure mouth is rotatably connected, and the second magnetic is equipped at the pressure relief plate part Chong Die with first magnetism absorbent strip
Item, second magnetism absorbent strip and first magnetism absorbent strip are attracted；
The inflation main part also has pocket, and the pocket is located at one where the connection end of the pressure relief opening
End, and it is connected to end connection with described, the internal diameter of the pocket is greater than the internal diameter at the connection end, and the inner wall of the pocket
On the outside of the connection end, the pressure relief opening is in communication with the outside by the pocket, first magnetism absorbent strip, the pressure release
Plate and second magnetism absorbent strip are contained in the pocket；
The connection end is obliquely installed towards the free end, and between the end face at the connection end and the end face of the free end
Distance gradually increase from top to down, the bore of the free end is less than the bore at the connection end；
The pressure relief device further include include unidirectional thermometer screen set on the free end；
The pressure relief device further includes the sliding slot on side of the pressure relief plate far from the pressure relief opening and is set to described
For carrying additionally the connecting rod of counterweight in sliding slot, the sliding slot is located at the pressure relief plate close to one end of second magnetism absorbent strip, described
Connecting rod is axially slidable along the sliding slot；
The pressure relief device further include set on the pressure relief plate close to the side of the pressure relief opening sealing strip, the sealing strip with
Second magnetism absorbent strip cooperatively forms the sealing ring for the bore cooperation for being connected to end with described, the sealing ring and the end that is connected to
Inner wall abuts.
2. pressure relief device according to claim 1, which is characterized in that the end face at the connection end and the end of the free end
Face is rectangle.
3. pressure relief device according to claim 1, which is characterized in that the inflation main part and the pressure relief plate can be rotated
Junction is equipped with the bolt for fixing hinge, and the pressure relief plate can be turned by hinge and the bolt with the inflation main part
Dynamic connection.
4. pressure relief device according to claim 1, which is characterized in that the pressure relief plate is cuboid, the sliding slot position
In on the center line of the pressure relief plate；Wherein, the central axis is in the upper end and lower end of the pressure relief plate, and excessively described lets out
The center of pressing plate.
5. pressure relief device according to claim 1, which is characterized in that the connecting rod is arranged in the tool of one end in the sliding slot
There is stage portion, the connecting rod is located at one end outside the sliding slot and passes through housing pin for the inner wall of the stage portion and the sliding slot
Locking.
6. pressure relief device according to claim 1, which is characterized in that first magnetism absorbent strip be magnetic stripe or iron bar, it is described
Second magnetism absorbent strip is magnetic stripe；Alternatively, first magnetism absorbent strip is magnetic stripe, second magnetism absorbent strip is iron bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410114891.3A CN104948789B (en) | 2014-03-25 | 2014-03-25 | Pressure relief device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410114891.3A CN104948789B (en) | 2014-03-25 | 2014-03-25 | Pressure relief device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104948789A CN104948789A (en) | 2015-09-30 |
| CN104948789B true CN104948789B (en) | 2019-09-20 |
Family
ID=54163695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410114891.3A Active CN104948789B (en) | 2014-03-25 | 2014-03-25 | Pressure relief device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104948789B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT202100003299A1 (en) * | 2021-02-15 | 2022-08-15 | Fruit Control Equipments Srl | SAFETY SYSTEM TO PRESERVE THE STRUCTURAL INTEGRITY OF A PLANT FOR THE PRESERVATION OF PRODUCTS IN PARTICULAR FRUIT AND VEGETABLES IN A CONTROLLED ATMOSPHERE |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106742892A (en) * | 2016-11-23 | 2017-05-31 | 郑州云海信息技术有限公司 | A kind of pressure relief opening for container data center |
| CN106679182A (en) * | 2017-01-09 | 2017-05-17 | 广东万家乐燃气具有限公司 | Detonation-free balanced type gas water heater |
| CN107120021B (en) * | 2017-05-26 | 2019-03-05 | 欧必翼门控科技(北京)有限公司 | Flat-pushing door control method and horizontal sliding door |
| DE102017120172A1 (en) | 2017-09-01 | 2019-03-07 | Thyssenkrupp Ag | Filter device and fastening means with such a filter device |
| CN112959075A (en) * | 2021-02-04 | 2021-06-15 | 陈增法 | Turning and polishing integrated machine for numerical control machining |
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| CN101392848A (en) * | 2008-10-24 | 2009-03-25 | 南京西普机电工程有限公司 | Plate type flow rate automatic control valve |
| CN201293129Y (en) * | 2008-11-21 | 2009-08-19 | 中冶焦耐工程技术有限公司 | Balancing flap valve special for air quantity changing dedusting system |
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| IT202100003299A1 (en) * | 2021-02-15 | 2022-08-15 | Fruit Control Equipments Srl | SAFETY SYSTEM TO PRESERVE THE STRUCTURAL INTEGRITY OF A PLANT FOR THE PRESERVATION OF PRODUCTS IN PARTICULAR FRUIT AND VEGETABLES IN A CONTROLLED ATMOSPHERE |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104948789A (en) | 2015-09-30 |
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| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: The central Shenzhen city of Guangdong Province, 518000 Keyuan Road, Nanshan District science and Technology Park No. 15 Kexing Science Park Building 2 unit B floor 12 No. 3 Applicant after: SHENZHEN BRAODWELL ENVIRONMENT PROTECTION TECHNOLOGY CO., LTD. Address before: The central Shenzhen city of Guangdong Province, 518000 Keyuan Road, Nanshan District science and Technology Park No. 15 Kexing Science Park Building 2 unit B floor 12 No. 3 Applicant before: Broadwell (Shenzhen) Technology Co., Ltd. |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 518000 b1-603, building B, Kexing Science Park, 15 Keyuan Road, Science Park community, Yuehai street, Nanshan District, Shenzhen City, Guangdong Province Patentee after: BROADWELL (SHENZHEN) TECHNOLOGY Co.,Ltd. Address before: 518000 Guangdong science and Technology Park, Shenzhen, Nanshan District, science and Technology Park, 15 Kexing Science Park, 2 B unit 12, 3 Patentee before: BROADWELL (SHENZHEN) TECHNOLOGY Co.,Ltd. |