CN114635994B - Ball valve for colloidal fluid - Google Patents
Ball valve for colloidal fluid Download PDFInfo
- Publication number
- CN114635994B CN114635994B CN202210145658.6A CN202210145658A CN114635994B CN 114635994 B CN114635994 B CN 114635994B CN 202210145658 A CN202210145658 A CN 202210145658A CN 114635994 B CN114635994 B CN 114635994B
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- China
- Prior art keywords
- hollow shaft
- fixedly connected
- valve body
- pressure
- fluid
- 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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- 239000012530 fluid Substances 0.000 title claims abstract description 41
- 238000009423 ventilation Methods 0.000 claims abstract description 24
- 244000309464 bull Species 0.000 claims description 12
- 230000000694 effects Effects 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0647—Spindles or actuating means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
-
- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/53—Mechanical actuating means with toothed gearing
- F16K31/535—Mechanical actuating means with toothed gearing for rotating valves
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
Abstract
The invention provides a ball valve for colloidal fluid, and relates to the field of valves. The ball valve for the colloidal fluid comprises a valve body and two connecting pipes, wherein one ends of the two connecting pipes, which are close to each other, are fixedly connected with the left end and the right end of the valve body respectively, the ball center is inserted in the valve body in a rotating manner, the hollow shaft is fixedly penetrated through the inner top wall of the ball center, the upper end of the hollow shaft is rotated and penetrated through the inner top wall of the valve body, the upper end of the valve body is fixedly connected with a top cover, the top cover is rotationally sleeved on the outer surface of the hollow shaft, a plurality of ventilation grooves A are formed in one end of the hollow shaft, which is positioned in the top cover, and the outer surface of the hollow shaft is rotationally sleeved with an envelope. This ball valve for gelatinous fluid through setting up ventilative groove A, ventilative groove B, pressure tank, pressure board and rope, has reached the effect of clearing up remaining fluid in the centre of sphere, has solved the inside fluid that remains of centre of sphere, under the long-time closed state, gelatinous fluid can solidify in the centre of sphere, the problem of the normal flow of fluid when influencing the valve and opening.
Description
Technical Field
The invention relates to the field of valves, in particular to a ball valve for colloidal fluid.
Background
Valves are mechanical devices for controlling the flow, direction, pressure, temperature, etc. of a flowing fluid medium, are basic components in a pipeline system, can be operated manually or by a hand wheel, a handle or a pedal, can also be controlled to change the pressure, temperature and flow change of the fluid medium, and can continuously or repeatedly operate the changes.
The ball valve is a valve with an opening and closing piece (ball body) driven by a valve rod and rotating around the axis of the ball valve, and can also be used for regulating and controlling fluid, the ball valve can complete the opening and closing of the valve by rotating the ball center, but when the ball valve is used in the field of colloidal fluid, fluid remains in the ball center in the closing process of the valve, and in a long-time closing state, the colloidal fluid can be solidified in the ball center to influence the normal flow of the fluid when the valve is opened.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a ball valve for colloidal fluid, which solves the problem that the colloidal fluid can solidify in the center of the ball when the valve is opened and the normal flow of the fluid is affected when the fluid remains in the center of the ball and is closed for a long time.
In order to achieve the above purpose, the invention is realized by the following technical scheme: the utility model provides a gelatinous ball valve for fluid, including valve body and connecting pipe, the quantity of connecting pipe is two, the one end that two connecting pipes are close to each other is with the left and right sides both ends fixed connection of valve body respectively, the inside rotation grafting of valve body has the centre of sphere, the fixed hollow shaft that runs through of centre of sphere inner top wall, the upper end rotation of hollow shaft runs through the inner top wall of valve body, the upper end fixedly connected with top cap of valve body, the top cap rotates the surface of cup jointing at the hollow shaft, a plurality of ventilative groove A has been seted up to the inside one end of hollow shaft in the top cap, the surface rotation of hollow shaft has cup jointed the cover, the upper end of top cap rotates the upper end of cup jointing at the cover, a plurality of ventilative groove B has been seted up to the circumference side of cover, the circumference side fixed grafting of top cap has the pressure case with internal connection, the inside slip grafting of pressure case has the pressure plate, the one side fixedly connected with hose that the pressure plate is close to the hollow shaft axis, the another side fixedly connected with arris pole of pressure case slides and cup joints the surface at the pole, the one end fixedly connected with spring of keeping away from the hollow shaft, the other end and pole fixedly connected with arris of spring cup joints the arris pole, the surface of wheel, the outer surface fixedly has been cup jointed at the hollow shaft, a plurality of ventilative groove B has been fixedly connected with a hose.
The bottom surface screw thread of valve body has cup jointed Chu Nacang, the interior bottom wall slip grafting of sphere has the head, the bottom surface fixedly connected with straight telescopic link of head, the lower extreme of straight telescopic link and Chu Nacang's inner wall fixed connection, the one end that the hollow shaft is located the top cap top is fixed to be cup jointed the worm wheel, the rear meshing of worm wheel has the worm, the both ends of worm all articulate with the upper surface of valve body, the place ahead of hollow shaft has the bull stick, the bottom surface and the upper surface fixed connection of cover of bull stick, the right flank fixedly connected with circular arc telescopic link of bull stick, the other end and the upper surface fixed connection of top cap of circular arc telescopic link, the left side of bull stick is provided with the pole setting, the upper end of pole setting and the bottom surface fixed connection of worm wheel.
Preferably, the bottom surface fixedly connected with of sphere center pushes away the dish, and the below of pushing away the dish is provided with two contact bars, and two contact bars are close to each other one end and the lower extreme fixed connection of head, and the bottom surface of pushing away the dish is two heliciform structures.
Preferably, the left and right sides of the soft rope are provided with limiting wheels, and both ends of the two limiting wheels are hinged with the inner wall of the pressure box.
Preferably, the upper surface of the pressure box is provided with pressure relief holes, the pressure relief holes are arranged between the pressure plate and the hollow shaft, and the number of the pressure boxes is multiple.
Preferably, the width of the ventilation grooves A is equal to that of the ventilation grooves B, and the ventilation grooves A and the ventilation grooves B are distributed in a staggered manner.
Preferably, the arc axis of the arc telescopic rod is coaxially arranged with the hollow shaft, and the top cover is cylindrical in a stepped shape.
Compared with the prior art, the invention has the following beneficial effects:
1. this ball valve for colloidal fluid through setting up ventilative groove A, ventilative groove B, pressure tank, pressure plate and rope, the mandrel drives the centre of sphere and rotates when closing the valve, hollow shaft drive wheel section of thick bamboo rotates the rope winding simultaneously, the pulling pressure plate removes, apply pressure to the gas in the pressure tank, after the hollow shaft rotates certain angle, the inside confined space that forms with the valve body of centre of sphere, the worm wheel promotes the bull stick through the pole setting and rotates, drive the cover and rotate, when ventilative groove A and ventilative groove B communicate, the atmospheric pressure in the top cap exerts thrust to the interior confined space of centre of sphere, the head compresses straight telescopic link under the effect of pressure, when the head slides out from the centre of sphere lower extreme, the effect of clearing up is carried out to the interior remaining fluid of centre of sphere in the pressure is reached, the inside remaining fluid of centre of sphere has been solved, under the long-time closed state, colloidal fluid can solidify in the centre of sphere, the problem that the normal flow of fluid when the valve was opened is influenced.
2. This ball valve for colloidal fluid, through setting up the pressure release hole, when opening the valve, the hollow shaft is positive and negative under the drive of worm wheel and is rotated, resumes dislocation when ventilative groove A and ventilative groove B, and the pressure plate resets under the promotion of spring, and the pressure in the pressure tank forms the negative pressure gradually, and when the pressure release hole was located between pressure plate and the hollow shaft again, the pressure release hole was carried out the pressure release and is handled to the negative pressure in the pressure tank.
3. This ball valve for gelatinous fluid through setting up contact rod and pushing disc, when the centre of sphere rotated, drives pushing disc and contact rod relative rotation, because the bottom surface of pushing disc is two heliciform structures, makes pushing disc supplementary promotion head downwardly compressing straight telescopic link when rotating, prevents that the head can not in time break away from the centre of sphere lower extreme under the promotion of atmospheric pressure.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the internal structure of the valve body of the present invention;
FIG. 3 is a schematic diagram of the connection between the turntable and the center of sphere according to the present invention;
FIG. 4 is a schematic view of the internal structure of the top cover of the present invention;
FIG. 5 is a schematic diagram of the ventilation slots A and B according to the present invention;
fig. 6 is an enlarged schematic view of the structure a in fig. 4 according to the present invention.
The valve comprises a valve body 1, a connecting pipe 2, a hollow shaft 3, a top cover 4, a sleeve 5, a ventilation groove A6, a ventilation groove B7, a pressure box 8, a pressure plate 9, a limit wheel 10, a pressure relief hole 11, a soft rope 12, a prismatic rod 13, a spring 14, a wheel cylinder 15, a spherical center 16 Chu Nacang, a spherical center 17, a straight telescopic rod 18, a sealing head 19, a worm wheel 20, a worm 21, a circular arc telescopic rod 22, a rotary rod 23, a vertical rod 24, a push disc 25 and a contact rod 26.
Detailed Description
As shown in fig. 1-6, a ball valve for colloidal fluid comprises a valve body 1 and two connecting pipes 2, wherein one end of each connecting pipe 2, which is close to each other, is fixedly connected with the left end and the right end of the valve body 1, the inside of the valve body 1 is rotationally inserted with a ball center 17, the inner top wall of the ball center 17 is fixedly penetrated with a hollow shaft 3, the upper end of the hollow shaft 3 is rotationally penetrated with the inner top wall of the valve body 1, the upper end of the valve body 1 is fixedly connected with a top cover 4, the top cover 4 is rotationally sleeved on the outer surface of the hollow shaft 3, one end of the hollow shaft 3, which is positioned in the top cover 4, is provided with a plurality of ventilation grooves A6, the outer surface of the hollow shaft 3 is rotationally sleeved with a sleeve 5, the upper end of the top cover 4 is rotationally sleeved on the upper end of the sleeve 5, A plurality of ventilation grooves B7 are formed in the circumferential side face of the jacket 5, the ventilation grooves A6 are equal to the ventilation grooves B7 in width, the ventilation grooves A6 and the ventilation grooves B7 are distributed in a staggered mode, when the ventilation grooves A6 and the ventilation grooves B7 are staggered, the top cover 4 is not communicated with the space in the sphere center 17, leakage to the top cover 4 during fluid conveying is prevented, the pressure box 8 connected with the inside is fixedly inserted into the circumferential side face of the top cover 4, the pressure plate 9 is inserted into the pressure box 8 in a sliding mode, pressure relief holes 11 are formed in the upper surface of the pressure box 8, the pressure relief holes 11 are located between the pressure plate 9 and the hollow shaft 3, the number of the pressure boxes 8 is multiple, and the pressure of the pressure boxes 8 is guaranteed to be identical to the pressure of the outside in an initial state.
One side of the pressure plate 9, which is close to the axis of the hollow shaft 3, is fixedly connected with a soft rope 12, the other side of the pressure plate 9 is fixedly connected with a rib rod 13, the pressure box 8 is sleeved on the outer surface of the rib rod 13 in a sliding manner, one end of the pressure box 8, which is far away from the hollow shaft 3, is fixedly connected with a spring 14, the other end of the spring 14 is fixedly connected with the rib rod 13, the spring 14 is movably sleeved on the outer surface of the rib rod 13, the outer surface of the hollow shaft 3 is fixedly sleeved with a wheel cylinder 15, the wheel cylinder 15 is positioned below the sleeve 5, one end of the soft rope 12, which is far away from the pressure plate 9, is fixedly connected with the wheel cylinder 15, limiting wheels 10 are arranged on the left side and the right side of the soft rope 12, two ends of the limiting wheels 10 are hinged with the inner wall of the pressure box 8, and the limiting wheels 10 reduce friction between the soft rope 12 and the pressure box 8, and simultaneously ensure that the tensile force direction born by the pressure plate 9 is kept vertical to the pressure plate 9.
The bottom surface screw thread of valve body 1 has cup jointed and has stored up bin 16, chu Nacang can separate with valve body 1 when rotating relatively with valve body 1, and the interior bottom wall slip grafting of sphere center 17 has head 19, and the bottom surface fixedly connected with straight telescopic link 18 of head 19, the lower extreme of straight telescopic link 18 and Chu Nacang 16's inner wall fixed connection, the bottom surface fixedly connected with push plate 25 of sphere center 17, the below of push plate 25 is provided with two contact rods 26, the one end that two contact rods 26 are close to each other all with the lower extreme fixed connection of head 19, the bottom surface of push plate 25 is two heliciform structures, when push plate 25 rotates with contact rod 26 under the drive of sphere center 17, can assist to promote head 19 downwardly moving.
The one end that hollow shaft 3 is located top cap 4 top has fixedly cup jointed worm wheel 20, worm wheel 20's rear meshing has worm 21, worm 21's both ends all are articulated with the upper surface of valve body 1, hollow shaft 3's the place ahead has bull stick 23, bull stick 23's bottom surface and the upper surface fixed connection of cover 5, bull stick 23's right flank fixedly connected with circular arc telescopic link 22, circular arc telescopic link 22's the other end and top cap 4's upper surface fixed connection, bull stick 23's left side is provided with pole setting 24, pole setting 24's upper end and worm wheel 20's bottom surface fixed connection, circular arc axis and hollow shaft 3 coaxial setting of circular arc telescopic link 22, top cap 4's shape ladder is cylindric.
When the valve is closed, the rotating worm 21 is meshed with the worm gear 20, the hollow shaft 3 drives the ball center 17 to rotate synchronously, meanwhile, the hollow shaft 3 drives the wheel cylinder 15 to rotate to wind the soft rope 12, the pressure plate 9 is pulled to move, pressure is applied to gas in the pressure box 8, after the hollow shaft 3 rotates for a certain angle, the inside of the ball center 17 and the valve body 1 form a closed space, the worm gear 20 drives the rotating rod 23 to rotate through the vertical rod 24, the envelope 5 is driven to rotate, when the ventilation groove A6 is communicated with the ventilation groove B7, air pressure in the top cover 4 applies thrust to the closed space in the ball center 17, the sealing head 19 compresses the straight telescopic rod 18 under the action of the pressure, meanwhile, the pushing disc 25 is driven to push the contact rod 26 to assist the sealing head 19 to move downwards when the sealing head 19 slides out from the lower end of the ball center 17, residual fluid in the ball center 17 flows into the Chu Nacang under the pushing of the pressure, the residual fluid in the ball center 17 is cleaned, the fluid in the ball center can be removed by rotating relative to the valve body 1, and the fluid in the Chu Nacang is cleaned by Chu Nacang.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a gelatinous ball valve for fluid, includes valve body (1) and connecting pipe (2), its characterized in that: the number of the connecting pipes (2) is two, one ends of the two connecting pipes (2) which are close to each other are fixedly connected with the left end and the right end of the valve body (1) respectively, a ball center (17) is rotatably connected in the valve body (1), a hollow shaft (3) is fixedly penetrated through the inner top wall of the ball center (17), the upper end of the hollow shaft (3) rotatably penetrates through the inner top wall of the valve body (1), the upper end of the valve body (1) is fixedly connected with a top cover (4), the top cover (4) is rotatably connected with the outer surface of the hollow shaft (3), one end of the hollow shaft (3) positioned in the top cover (4) is provided with a plurality of ventilation grooves A (6), the outer surface of the hollow shaft (3) is rotatably connected with an envelope (5), the upper end of the top cover (4) is rotatably connected with the upper end of the envelope (5), a plurality of ventilation grooves B (7) are formed in the circumferential side surface of the envelope (5), a pressure box (8) which is fixedly connected with the inner side of the inner part of the hollow shaft, a pressure plate (9) is slidably connected with the inner side of the pressure box (8), one surface (12) which is close to the axis of the hollow shaft (3) is fixedly connected with the pressure plate (13), the other surface (13) is fixedly connected with the pressure bar (13), one end of the pressure box (8) far away from the hollow shaft (3) is fixedly connected with a spring (14), the other end of the spring (14) is fixedly connected with a prismatic rod (13), the spring (14) is movably sleeved on the outer surface of the prismatic rod (13), the outer surface of the hollow shaft (3) is fixedly sleeved with a wheel cylinder (15), the wheel cylinder (15) is positioned below the sleeve (5), and one end of the soft rope (12) far away from the pressure plate (9) is fixedly connected with the wheel cylinder (15);
the utility model discloses a valve body, including valve body (1), bottom surface screw thread cup joints Chu Nacang (16), the interior bottom wall slip grafting of sphere center (17) has head (19), the bottom surface fixedly connected with straight telescopic link (18) of head (19), the lower extreme and the inner wall fixed connection of Chu Nacang (16) of straight telescopic link (18), the one end that hollow shaft (3) are located top cap (4) is fixed cup joints worm wheel (20), the rear meshing of worm wheel (20) has worm (21), the both ends of worm (21) all articulate with the upper surface of valve body (1), the place ahead of hollow shaft (3) has bull stick (23), the bottom surface of bull stick (23) and the upper surface fixed connection of cover (5), the right flank fixedly connected with circular arc telescopic link (22), the other end and the upper surface fixed connection of top cap (4) of circular arc telescopic link (22), the left side of bull stick (23) is provided with pole (24), the upper end and the bottom surface fixed connection of worm wheel (20) of pole (24).
2. The ball valve for a colloidal fluid according to claim 1, wherein: the bottom surface fixedly connected with of sphere center (17) pushes away dish (25), and the below of pushing away dish (25) is provided with two contact bars (26), and the one end that two contact bars (26) are close to each other is all with the lower extreme fixed connection of head (19), pushes away the bottom surface of dish (25) and is two helicla flute column structure.
3. The ball valve for a colloidal fluid according to claim 1, wherein: limiting wheels (10) are arranged on the left side and the right side of the soft rope (12), and two ends of the two limiting wheels (10) are hinged to the inner wall of the pressure box (8).
4. The ball valve for a colloidal fluid according to claim 1, wherein: pressure relief holes (11) are formed in the upper surface of the pressure box (8), the pressure relief holes (11) are located between the pressure plate (9) and the hollow shaft (3), and the number of the pressure boxes (8) is multiple.
5. The ball valve for a colloidal fluid according to claim 1, wherein: the width of the ventilation grooves A (6) is equal to that of the ventilation grooves B (7), and the ventilation grooves A (6) and the ventilation grooves B (7) are distributed in a staggered mode.
6. The ball valve for a colloidal fluid according to claim 1, wherein: the arc axis of the arc telescopic rod (22) is coaxially arranged with the hollow shaft (3), and the top cover (4) is cylindrical in a stepped shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210145658.6A CN114635994B (en) | 2022-02-17 | 2022-02-17 | Ball valve for colloidal fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210145658.6A CN114635994B (en) | 2022-02-17 | 2022-02-17 | Ball valve for colloidal fluid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114635994A CN114635994A (en) | 2022-06-17 |
| CN114635994B true CN114635994B (en) | 2023-08-25 |
Family
ID=81946458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210145658.6A Active CN114635994B (en) | 2022-02-17 | 2022-02-17 | Ball valve for colloidal fluid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114635994B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160115059A (en) * | 2015-03-25 | 2016-10-06 | (주) 유니플로 | The valve seat device having a removable way ball valve seat surface cleaning means |
| CN211951599U (en) * | 2020-04-03 | 2020-11-17 | 浙江瓯明流体铸业有限公司 | High platform anti-corrosion ball valve |
| EP3754236A1 (en) * | 2016-11-04 | 2020-12-23 | Franz Schuck GmbH | Processes for a ball valve for a conduit system for conveying liquid or gaseous media |
| CN112682528A (en) * | 2020-12-21 | 2021-04-20 | 胡坤 | Two-piece type ceramic ball valve |
| CN112923092A (en) * | 2021-02-10 | 2021-06-08 | 俞伟光 | Ball valve |
-
2022
- 2022-02-17 CN CN202210145658.6A patent/CN114635994B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160115059A (en) * | 2015-03-25 | 2016-10-06 | (주) 유니플로 | The valve seat device having a removable way ball valve seat surface cleaning means |
| EP3754236A1 (en) * | 2016-11-04 | 2020-12-23 | Franz Schuck GmbH | Processes for a ball valve for a conduit system for conveying liquid or gaseous media |
| CN211951599U (en) * | 2020-04-03 | 2020-11-17 | 浙江瓯明流体铸业有限公司 | High platform anti-corrosion ball valve |
| CN112682528A (en) * | 2020-12-21 | 2021-04-20 | 胡坤 | Two-piece type ceramic ball valve |
| CN112923092A (en) * | 2021-02-10 | 2021-06-08 | 俞伟光 | Ball valve |
Non-Patent Citations (1)
| Title |
|---|
| 浅析球阀常见内漏原因及其解决方法;刘春宇;;山东工业技术(第07期);第197页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114635994A (en) | 2022-06-17 |
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Effective date of registration: 20230731 Address after: No. 169 Hangkong Road, Tianjin Pilot Free Trade Zone (Airport Economic Zone), Binhai New Area, Tianjin, 300300 Applicant after: TIANJIN ZHONGHE SCIENCE & TECHNOLOGY INDUSTRIAL CO.,LTD. Address before: 272000 4th floor, old daily, No. 80, Hongxing Road, Fuqiao street, Rencheng District, Jinan City, Shandong Province Applicant before: Hu Yunbiao |
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Address after: No. 169 Hangkong Road, Tianjin Pilot Free Trade Zone (Airport Economic Zone), Binhai New Area, Tianjin, 300300 Patentee after: Tianjin Zhongtian Nuclear Technology Industry Co.,Ltd. Country or region after: China Address before: No. 169 Hangkong Road, Tianjin Pilot Free Trade Zone (Airport Economic Zone), Binhai New Area, Tianjin, 300300 Patentee before: TIANJIN ZHONGHE SCIENCE & TECHNOLOGY INDUSTRIAL CO.,LTD. Country or region before: China |