CN113340513B - Pressure gauge - Google Patents
Pressure gauge Download PDFInfo
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- CN113340513B CN113340513B CN202110745746.5A CN202110745746A CN113340513B CN 113340513 B CN113340513 B CN 113340513B CN 202110745746 A CN202110745746 A CN 202110745746A CN 113340513 B CN113340513 B CN 113340513B
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- sleeve
- sliding
- groove
- control sleeve
- hole
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L7/00—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements
- G01L7/02—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges
- G01L7/024—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges with mechanical transmitting or indicating means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/06—Means for preventing overload or deleterious influence of the measured medium on the measuring device or vice versa
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses a pressure gauge which comprises a threaded sleeve, wherein a connecting sleeve is fixedly arranged in the threaded sleeve, a first through hole is formed in the bottom of the threaded sleeve, a control sleeve is rotatably connected to the bottom of the threaded sleeve in the connecting sleeve, a connecting block is rotatably connected to the upper side of the control sleeve in the connecting sleeve, a convex rod extending out of the connecting sleeve is arranged on the connecting block, a gauge neck is rotatably connected to the convex rod, and a gauge head is arranged on the gauge neck; the lower end of the connecting block is provided with an upper slotted hole, a transverse plate is arranged in the control sleeve, and a second through hole is formed in the center of the transverse plate; a sliding sleeve is connected in the upper slotted hole in a sliding manner along the axial direction of the control sleeve, and a dredging needle is arranged at the lower end of the sliding sleeve; a unidirectional rotating assembly is arranged between the upper end of the control sleeve and the lower end of the connecting block; a driving assembly is arranged in the control sleeve; the pressure gauge is simple in structure and can be conveniently dredged when being blocked.
Description
Technical Field
The invention relates to the technical field of pressure display equipment, in particular to a pressure gauge.
Background
The pressure gauge is mainly used for monitoring the working pressure of media filled in a pressure container, a pipeline and the like so as to properly control the pressure capacity and protect the safety of equipment, or provides a reliable basis for monitoring, controlling and adjusting production for operators by grasping pressure parameters. Therefore, the pressure gauge can be widely used in the fields of heat power pipe networks, oil and gas transmission, water and gas supply systems, vehicle maintenance plants and shops and the like.
In the use of the existing pressure gauge, the following problems still occur:
1. the direction of the dial of the pressure gauge is generally fixed, the read can be only realized by facing the dial in order to make clear reading, and the dial which can not change the direction causes difficulty in reading;
2. the pressure gauge medium inlet is generally very narrow and small, and the pressure gauge is easily blocked by impurities in the medium to influence the work of the pressure gauge, so that the pressure gauge can be seriously failed.
Disclosure of Invention
The invention aims to provide a pressure gauge which is simple in structure and can be conveniently dredged when being blocked.
In order to achieve the purpose, the invention provides the following technical scheme: a pressure gauge comprises a threaded sleeve, wherein a connecting sleeve is fixedly arranged in the threaded sleeve, a first through hole is formed in the bottom of the threaded sleeve, a control sleeve is rotatably connected to the bottom of the threaded sleeve in the connecting sleeve, a connecting block is rotatably connected to the upper side of the control sleeve in the connecting sleeve, a convex rod extending out of the connecting sleeve is arranged on the connecting block, a gauge neck is rotatably connected to the convex rod, and a gauge head is arranged on the gauge neck; the lower end of the connecting block is provided with an upper slotted hole which is communicated with the gauge outfit and is positioned coaxially with the control sleeve, the diameter of an inner hole of the control sleeve is the same as that of the upper slotted hole, a transverse plate is arranged in the control sleeve, and a second through hole is arranged at the center of the transverse plate; a sliding sleeve is connected to the inner side of the upper slotted hole in a sliding manner along the axial direction of the control sleeve, a dredging needle is arranged at the lower end of the sliding sleeve, and the dredging needle is driven to extend into the second through hole when the sliding sleeve moves downwards; a unidirectional rotating assembly is arranged between the upper end of the control sleeve and the lower end of the connecting block, the unidirectional rotating assembly does not drive the control sleeve to rotate when the connecting block rotates forwards, and the unidirectional rotating assembly drives the control sleeve to rotate when the connecting block rotates backwards; and a driving assembly is arranged in the control sleeve and used for driving the dredging needle to reciprocate up and down when the connecting block rotates reversely.
Furthermore, the unidirectional rotating assembly comprises a positioning block, a positioning groove is formed in the upper end of the control sleeve, the positioning block is located in the positioning groove, a spring piece used for forcing the positioning block to upwards abut against the lower end of the connecting block is arranged at the bottom of the positioning groove, a positioning groove opening is formed in the lower end of the connecting block, a first inclined surface is formed in the upper end of the positioning block, and when the connecting block rotates forwards, the positioning groove opening is matched with the first inclined surface to push the positioning block to retract into the positioning groove and compress the spring piece; when the connecting block rotates reversely, the positioning block extends into the positioning notch.
Furthermore, the driving assembly comprises a sliding block, the sliding block is connected in the control sleeve in a sliding mode along the axial direction of the control sleeve and located below the transverse plate, a through fifth through hole is formed in the sliding block along the axial direction of the control sleeve, a permanent magnet is arranged at the upper end of the sliding block, the dredging needle is made of an iron material, a first sliding groove is formed in the side wall of the control sleeve along the frontal axial direction of the control sleeve, a track groove is formed in the side wall of an inner hole of the connecting sleeve, and a sliding pin which penetrates through the first sliding groove and extends into the track groove is arranged on the outer side of the sliding block; when the control sleeve rotates, the sliding pin is driven to slide in the track groove and reciprocates up and down along the first sliding groove under the action of the track groove, and a first spring for forcing the sliding sleeve to be far away from the transverse plate is arranged between the transverse plate and the sliding sleeve; when the sliding pin moves to the upper end position of the first sliding chute, the dredging needle downwards penetrates out of the second through hole under the action of the attraction force of the permanent magnet, and the sliding sleeve downwards compresses the first spring; when the sliding pin moves downwards from the upper end position of the first sliding groove, the permanent magnet drives the dredging needle to move downwards, and when the sliding pin moves to the lower end position of the first sliding groove, the dredging needle is separated from the permanent magnet, and the sliding sleeve moves to the upper end of the upper slotted hole under the action of the first spring.
Further, the track groove comprises an upper horizontal groove, a lower horizontal groove and a spiral groove for communicating the upper horizontal groove with the lower horizontal groove, when the sliding pin is located in the upper horizontal groove, the sliding pin is located at the upper end position of the first sliding groove, and when the sliding pin is located in the lower horizontal groove, the sliding pin is located at the lower end position of the first sliding groove.
Furthermore, a raised head is arranged on the side surface of the convex rod close to the upper end, and the end part of the watch neck is rotatably connected to the raised head; third through holes communicated with the upper slotted holes are formed in the protruding rod and the protruding head, and fourth through holes communicated with the third through holes are formed in the watch neck.
Furthermore, the end part inner hole side wall of the meter neck is provided with an annular groove used for communicating the third through hole and the fourth through hole.
Furthermore, a baffle ring is fixedly arranged at the end part of the raised head extending out of the watch neck.
Advantageous effects
Compared with the prior art, the technical scheme of the invention has the following advantages:
1. the meter neck is rotationally connected with the raised head, and the raised rod is rotationally connected with the connecting sleeve through the connecting block, so that the angle of the meter head can be changed at will to meet the reading requirements of workers at different angles;
2. the permanent magnet is controlled to move up and down to attract the dredging needle to penetrate through the second through hole, so that the inlet of the pressure gauge, namely the second through hole, is dredged, impurities blocked in the second through hole can be removed, and the impurities flow away along with the medium, and therefore the effects of cleaning and blocking prevention are achieved;
3. the positioning block with the first inclined surface is used, so that the permanent magnet can be controlled to move up and down when the connecting block rotates reversely, and the permanent magnet is not controlled to move when the connecting block rotates forwardly, so that two working states of controlling the gauge outfit and dredging the second through hole are not disturbed;
4. through set up the permanent magnet in second through-hole department for iron fillings in the medium can adsorb on the permanent magnet, avoid blockking up.
Drawings
FIG. 1 is a cross-sectional view of the present invention;
FIG. 2 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 1 in accordance with the present invention;
FIG. 3 is a schematic view of the connecting sleeve of the present invention;
FIG. 4 is an external view of a control sleeve according to the present invention;
fig. 5 is an internal structure of the connecting sleeve of the present invention;
fig. 6 shows the internal structure of the control sleeve of the present invention.
Detailed Description
Referring to fig. 1-6, a pressure gauge includes a threaded sleeve 61, a connecting sleeve 5 is fixedly disposed in the threaded sleeve 61, a first through hole 62 is disposed at the bottom of the threaded sleeve 61, a control sleeve 4 is rotatably connected to the bottom of the threaded sleeve 61 in the connecting sleeve 5, a connecting block 21 is rotatably connected to the upper portion of the control sleeve 4 in the connecting sleeve 5, a protruding rod 2 extending out of the connecting sleeve 5 is disposed on the connecting block 21, a gauge neck 1 is rotatably connected to the protruding rod 2, and a gauge head 103 is disposed on the gauge neck 1; the lower end of the connecting block 21 is provided with an upper slotted hole 23 which is communicated with the gauge head 103 and is positioned coaxially with the control sleeve 4, the diameter of an inner hole of the control sleeve 4 is the same as that of the upper slotted hole 23, a transverse plate 41 is arranged in the control sleeve 4, and a second through hole 4a is arranged at the center of the transverse plate 41; a sliding sleeve 3 is connected to the inner side of the upper slotted hole 23 along the axial direction of the control sleeve 4 in a sliding manner, a dredging needle 3a is arranged at the lower end of the sliding sleeve 3, and the dredging needle 3a is driven to extend into the second through hole 4a when the sliding sleeve 3 moves downwards; a unidirectional rotating assembly is arranged between the upper end of the control sleeve 4 and the lower end of the connecting block 21, the unidirectional rotating assembly does not drive the control sleeve 4 to rotate when the connecting block 21 rotates forwards, and the unidirectional rotating assembly drives the control sleeve 4 to rotate when the connecting block 21 rotates reversely; and a driving component is arranged in the control sleeve 4 and is used for driving the dredging needle 3a to reciprocate up and down when the connecting block 21 rotates reversely.
The unidirectional rotating assembly comprises a positioning block 8, a positioning groove 4c is formed in the upper end of the control sleeve 4, the positioning block 8 is located in the positioning groove 4c, a spring piece 9 used for forcing the positioning block 8 to abut against the lower end of the connecting block 21 upwards is arranged at the bottom of the positioning groove 4c, a positioning groove 4c opening is formed in the lower end of the connecting block 21, a first inclined surface 8a is formed in the upper end of the positioning block 8, and when the connecting block 21 rotates forwards, the positioning groove 4c opening is matched with the first inclined surface 8a to push the positioning block 8 to retract into the positioning groove 4c and compress the spring piece 9; when the connecting block 21 rotates reversely, the positioning block 8 extends into the positioning groove 4 c.
The driving assembly comprises a sliding block 7, the sliding block 7 is connected in the control sleeve 4 in a sliding mode along the axial direction of the control sleeve 4 and is located below the transverse plate 41, a through fifth through hole 63 is formed in the sliding block 7 along the axial direction of the control sleeve 4, a permanent magnet 7a is arranged at the upper end of the sliding block 7, the dredging needle 3a is made of iron materials, a first sliding groove 4b is formed in the side wall of the control sleeve 4 along the frontal axial direction of the control sleeve 4, a track groove is formed in the side wall of an inner hole of the connecting sleeve 5, and a sliding pin 6 which penetrates through the first sliding groove 4b and extends into the track groove is arranged on the outer side of the sliding block 7; when the control sleeve 4 rotates, the sliding pin 6 is driven to slide in the track groove, the sliding pin 6 reciprocates up and down along the first sliding groove 4b under the action of the track groove, and a first spring 10 for forcing the sliding sleeve 3 to be far away from the transverse plate 41 is arranged between the transverse plate 41 and the sliding sleeve 3; when the sliding pin 6 moves to the upper end position of the first sliding chute 4b, the dredging needle 3a downwards penetrates out of the second through hole 4a under the action of the attraction force of the permanent magnet 7a, and the sliding sleeve 3 downwards compresses the first spring 10; when the sliding pin 6 moves downwards from the upper end position of the first sliding chute 4b, the permanent magnet 7a drives the dredging needle 3a to move downwards, and when the sliding pin 6 moves to the lower end position of the first sliding chute 4b, the dredging needle 3a is separated from the permanent magnet 7a, and the sliding sleeve 3 moves to the upper end of the upper slotted hole 23 under the action of the first spring 10. The track groove comprises an upper horizontal groove 5b2, a lower horizontal groove 5b3 and a spiral groove 5b1 for communicating the upper horizontal groove 5b2 with the lower horizontal groove 5b3, when the sliding pin 6 is positioned in the upper horizontal groove 5b2, the sliding pin 6 is positioned at the upper end position of the first sliding groove 4b, and when the sliding pin 6 is positioned in the lower horizontal groove 5b3, the sliding pin 6 is positioned at the lower end position of the first sliding groove 4 b.
The side surface of the convex rod 2 close to the upper end is provided with a convex head 22, and the end part of the watch neck 1 is rotationally connected to the convex head 22; the protruding rod 2 and the protruding head 22 are internally provided with a third through hole 2a communicated with the upper slotted hole 23, and the watch neck 1 is internally provided with a fourth through hole 1a communicated with the third through hole 2 a. And the side wall of an inner hole at the end part of the meter neck 1 is provided with an annular groove 101 for communicating the third through hole 2a and the fourth through hole 1a. The end of the nose 22 extending beyond the watch neck 1 is fixedly provided with a stop ring 102.
As shown in fig. 1, which is a simple structure of the present invention, when a pressure gauge is required to be used for pressure detection, the pressure gauge needs to be installed on an integrated block of a flow channel to be detected, firstly, because a gauge neck 1 is rotatably connected with a raised head 22, a protruding rod 2 is rotatably connected with a connecting sleeve 5 through a connecting block 21, so that an angle of a gauge head 103 can be adjusted in the vertical and horizontal directions; because the connecting block 21 is rotationally connected with the connecting sleeve 5, when the connecting block 21 rotates forwards, the opening of the positioning groove 4c is matched with the first inclined surface 8a, so that the positioning block 8 overcomes the spring piece 9 and retracts into the positioning groove 4c, and when the connecting block 21 rotates forwards normally, the connecting block does not drive the control sleeve 4 to rotate, so that the watch head 103 can be rotated in the horizontal direction; the adjustment of the header 103 is completed.
The medium in the runner gets into gauge outfit 103 through first through-hole 62, fifth through-hole 63, second through-hole 4a, last slotted hole 23, third through-hole 2a, fourth through-hole 1a in, makes the manometer work, and the real pressure value when needs read the pressure value, can rotate meter neck 1 at will in order to adapt to the reading angle.
When the pressure gauge is blocked or the second through hole 4a is blocked, the connecting block 21 is rotated reversely through the convex rod 2, the upper end of the positioning block 8 enters the opening of the positioning groove 4c under the action of the spring plate 9, so that the connecting block 21 can drive the control sleeve 4 to rotate, the sliding pin 6 slides in the track groove because the sliding pin 6 slides in the first sliding groove 4b, so that when the sliding pin 6 enters the upper horizontal groove 5b2 from the spiral groove 5b1, the permanent magnet 7a rises to the highest position and sucks the dredging needle 3a, the dredging needle 3a overcomes the first spring 10 to penetrate through the second through hole 4a, impurities blocked at the second through hole 4a are pushed out, when the sliding pin 6 enters the lower horizontal groove 5b3 from the spiral groove 5b1, the permanent magnet 7a moves to the lowest position, the dredging needle 3a is separated from the permanent magnet 7a and resets under the action of the first spring 10, when the connecting block 21 rotates, the permanent magnet 7a is controlled to move up and down, so that the dredging needle 3a ceaselessly penetrates in and out of the second through hole 4a, impurities are dredged, a medium inlet is cleared, and the medium inlet is continuously recycled.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (4)
1. A pressure gauge is characterized by comprising a threaded sleeve, wherein a connecting sleeve is fixedly arranged in the threaded sleeve, a first through hole is formed in the bottom of the threaded sleeve, a control sleeve is rotatably connected to the bottom of the threaded sleeve in the connecting sleeve, a connecting block is rotatably connected to the upper side of the control sleeve in the connecting sleeve, a convex rod extending out of the connecting sleeve is arranged on the connecting block, a gauge neck is rotatably connected to the convex rod, and a gauge head is arranged on the gauge neck; the lower end of the connecting block is provided with an upper slotted hole which is communicated with the gauge outfit and is positioned coaxially with the control sleeve, the diameter of an inner hole of the control sleeve is the same as that of the upper slotted hole, a transverse plate is arranged in the control sleeve, and a second through hole is arranged at the center of the transverse plate; a sliding sleeve is connected to the inner side of the upper slotted hole in a sliding manner along the axial direction of the control sleeve, a dredging needle is arranged at the lower end of the sliding sleeve, and the dredging needle is driven to extend into the second through hole when the sliding sleeve moves downwards; a unidirectional rotating assembly is arranged between the upper end of the control sleeve and the lower end of the connecting block, the unidirectional rotating assembly does not drive the control sleeve to rotate when the connecting block rotates forwards, and the unidirectional rotating assembly drives the control sleeve to rotate when the connecting block rotates backwards; a driving assembly is arranged in the control sleeve and used for driving the dredging needle to reciprocate up and down when the connecting block rotates reversely;
the unidirectional rotating assembly comprises a positioning block, the upper end of the control sleeve is provided with a positioning groove, the positioning block is positioned in the positioning groove, the bottom of the positioning groove is provided with a spring piece used for forcing the positioning block to upwards abut against the lower end of the connecting block, the lower end of the connecting block is provided with a positioning notch, the upper end of the positioning block is provided with a first inclined surface, and when the connecting block rotates forwards, the positioning notch and the first inclined surface are matched to push the positioning block to retract into the positioning groove and compress the spring piece; when the connecting block rotates reversely, the positioning block extends into the positioning notch;
the driving assembly comprises a sliding block, the sliding block is connected in the control sleeve in a sliding mode along the axial direction of the control sleeve and located below the transverse plate, a through fifth through hole is formed in the sliding block along the axial direction of the control sleeve, a permanent magnet is arranged at the upper end of the sliding block, the dredging needle is made of an iron material, a first sliding groove is formed in the side wall of the control sleeve along the frontal axial direction of the control sleeve, a track groove is formed in the side wall of an inner hole of the connecting sleeve, and a sliding pin which penetrates through the first sliding groove and extends into the track groove is arranged on the outer side of the sliding block; when the control sleeve rotates, the sliding pin is driven to slide in the track groove, the sliding pin reciprocates up and down along the first sliding groove under the action of the track groove, and a first spring for forcing the sliding sleeve to be far away from the transverse plate is arranged between the transverse plate and the sliding sleeve; when the sliding pin moves to the upper end position of the first sliding chute, the dredging needle downwards penetrates out of the second through hole under the action of the attraction force of the permanent magnet, and the sliding sleeve downwards compresses the first spring; when the sliding pin moves downwards from the upper end position of the first sliding chute, the permanent magnet drives the dredging needle to move downwards, and when the sliding pin moves to the lower end position of the first sliding chute, the dredging needle is separated from the permanent magnet, and the sliding sleeve moves to the upper end of the upper slotted hole under the action of the first spring;
the track groove comprises an upper horizontal groove, a lower horizontal groove and a spiral groove used for communicating the upper horizontal groove and the lower horizontal groove, when the sliding pin is located in the upper horizontal groove, the sliding pin is located at the upper end position of the first sliding groove, and when the sliding pin is located in the lower horizontal groove, the sliding pin is located at the lower end position of the first sliding groove.
2. The pressure gauge according to claim 1, wherein the protruding rod is provided with a protruding head on the side surface close to the upper end, and the end part of the gauge neck is rotatably connected to the protruding head; third through holes communicated with the upper slotted holes are formed in the protruding rod and the protruding head, and fourth through holes communicated with the third through holes are formed in the watch neck.
3. The pressure gauge according to claim 2, wherein the end portion of the neck has an inner hole side wall provided with an annular groove for communicating the third through hole and the fourth through hole.
4. A pressure gauge according to claim 3, wherein a stop ring is fixedly arranged at the end of the nose extending out of the neck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110745746.5A CN113340513B (en) | 2021-07-01 | 2021-07-01 | Pressure gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110745746.5A CN113340513B (en) | 2021-07-01 | 2021-07-01 | Pressure gauge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113340513A CN113340513A (en) | 2021-09-03 |
| CN113340513B true CN113340513B (en) | 2022-12-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110745746.5A Active CN113340513B (en) | 2021-07-01 | 2021-07-01 | Pressure gauge |
Country Status (1)
| Country | Link |
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| CN (1) | CN113340513B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS544179A (en) * | 1977-06-07 | 1979-01-12 | Hehl Karl | Device for connecting alternately pressure gauge to different measured points |
| US5590684A (en) * | 1995-09-01 | 1997-01-07 | Keystone International Holdings Corporation | Dual pilot manifold assembly for a safety relief valve |
| JP2003021255A (en) * | 2001-07-10 | 2003-01-24 | Nok Corp | Solenoid valve |
| DE102015122229A1 (en) * | 2015-12-18 | 2017-06-22 | Samson Ag | Valve |
| CN107740790A (en) * | 2017-10-13 | 2018-02-27 | 华南理工大学 | A kind of hydraulic valve |
| CN207248217U (en) * | 2017-07-17 | 2018-04-17 | 红旗仪表（长兴）有限公司 | A kind of rotary type instrument |
| CN112050992A (en) * | 2020-08-28 | 2020-12-08 | 安徽瑞尔特仪表科技有限公司 | Medical diaphragm box micro-pressure meter |
| CN213336607U (en) * | 2020-11-05 | 2021-06-01 | 河北青桥科技有限公司 | High static pressure differential pressure gauge with anti-blocking function |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107842626B (en) * | 2017-11-23 | 2023-09-29 | 天津卡尔斯阀门股份有限公司 | One-way anti-blocking valve |
-
2021
- 2021-07-01 CN CN202110745746.5A patent/CN113340513B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS544179A (en) * | 1977-06-07 | 1979-01-12 | Hehl Karl | Device for connecting alternately pressure gauge to different measured points |
| US5590684A (en) * | 1995-09-01 | 1997-01-07 | Keystone International Holdings Corporation | Dual pilot manifold assembly for a safety relief valve |
| JP2003021255A (en) * | 2001-07-10 | 2003-01-24 | Nok Corp | Solenoid valve |
| DE102015122229A1 (en) * | 2015-12-18 | 2017-06-22 | Samson Ag | Valve |
| CN207248217U (en) * | 2017-07-17 | 2018-04-17 | 红旗仪表（长兴）有限公司 | A kind of rotary type instrument |
| CN107740790A (en) * | 2017-10-13 | 2018-02-27 | 华南理工大学 | A kind of hydraulic valve |
| CN112050992A (en) * | 2020-08-28 | 2020-12-08 | 安徽瑞尔特仪表科技有限公司 | Medical diaphragm box micro-pressure meter |
| CN213336607U (en) * | 2020-11-05 | 2021-06-01 | 河北青桥科技有限公司 | High static pressure differential pressure gauge with anti-blocking function |
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| Publication number | Publication date |
|---|---|
| CN113340513A (en) | 2021-09-03 |
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Effective date of registration: 20221116 Address after: Room 301, Unit 2, Building 16, No. 6, Park South Road, Changqing Garden Street, Dongxihu District, Wuhan City, 430000 Hubei Province Applicant after: Bao Liang Address before: 315000 jishigang Industrial Park, the intersection of GONGMAO third road and Jifeng Road, Haishu District, Ningbo City, Zhejiang Province Applicant before: Li Shubing |
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Effective date of registration: 20230811 Address after: Floor 1-5, Workshop 14#2, West of Linkongang Avenue, Jinghe Street, Dongxihu District, Wuhan City, Hubei Province 430000 Patentee after: HUBEI CHUTIAN HANYI TECHNOLOGY CO.,LTD. Address before: Room 301, Unit 2, Building 16, No. 6, Park South Road, Changqing Garden Street, Dongxihu District, Wuhan City, 430000 Hubei Province Patentee before: Bao Liang |