CN111963722A - Detachable port sealing connector of metal sealing rotary ball valve - Google Patents
Detachable port sealing connector of metal sealing rotary ball valve Download PDFInfo
- Publication number
- CN111963722A CN111963722A CN202010780271.9A CN202010780271A CN111963722A CN 111963722 A CN111963722 A CN 111963722A CN 202010780271 A CN202010780271 A CN 202010780271A CN 111963722 A CN111963722 A CN 111963722A
- Authority
- CN
- China
- Prior art keywords
- connecting piece
- piece body
- block
- ball valve
- sealing
- 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.)
- Pending
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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
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/08—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks
- F16K11/087—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks with spherical plug
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
- F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/53—Mechanical actuating means with toothed gearing
- F16K31/54—Mechanical actuating means with toothed gearing with pinion and rack
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/60—Handles
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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
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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
- F16K5/08—Details
Abstract
The invention provides a detachable port sealing connecting piece of a metal sealing rotary ball valve, which relates to the technical field of mechanical elements and comprises a connecting piece body, wherein a rotating rod penetrates through the top surface of the connecting piece body, a mounting disc is fixedly mounted at the top end of the connecting piece body, an anti-rust device is fixedly mounted at the top end of the mounting disc, an operating device is fixedly mounted at the top end of the connecting piece body, a sealing device is fixedly mounted at the bottom end of the connecting piece body, a liquid outlet is communicated with the side surface of the connecting piece body, a liquid inlet is communicated with the bottom surface of the connecting piece body, the anti-rust device comprises a mounting plate and a gear, a first sliding groove is formed in the top end of the mounting plate, the reliable anti-rust effect is realized, when a worker opens and closes the valve, the brush plate can brush on the surface of the rotating rod so as to brush rust on the, the service life of the rotating rod is prolonged, rust is not easy to rust, and the rotating rod is beneficial to practical use.
Description
Technical Field
The invention relates to the technical field of mechanical elements, in particular to a detachable port sealing connecting piece of a metal sealing rotary ball valve.
Background
The metal sealing rotary ball valve can realize proportion adjustment, and has the advantages of large rated flow coefficient, large adjustable ratio, good sealing effect, sensitive adjustment performance, small volume, vertical and horizontal installation and the like. The valve is suitable for controlling media such as gas, steam, liquid and the like, and the connection between the valve and the connecting pipe needs to be carried out by using a valve connecting piece.
At present mainstream spin valve when long-term the use, the problem of last rust exists, because the operational environment moisture is great, in addition the sweat in the staff's hand, further accelerated the last rust speed of spin valve, finally influence the normal use of spin valve, reduced working life.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a detachable port sealing connector of a metal sealing rotary ball valve.
In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a but removable fraction port sealing connection spare of metal seal spin ball valve, includes the connecting piece body, the top surface of connecting piece body runs through and is provided with the bull stick, the top fixed mounting of connecting piece body has the mounting disc, the top fixed mounting of mounting disc has rust-resistant device, the top fixed mounting of connecting piece body has operating means, the bottom fixed mounting of connecting piece body has sealing device, connecting piece body side intercommunication has the liquid outlet, the bottom surface intercommunication of connecting piece body has the inlet.
Antirust device includes mounting panel and gear, first spout has been seted up on the top of mounting panel, the inner wall slidable mounting of first spout has first slider, the top fixed mounting of first slider has the long board, the side fixed mounting of long board has the rack, the top surface fixed mounting of long board has the fixed block, the top fixed mounting of fixed block has the brush board.
Preferably, operating means includes short slab and rotary disk, the perforation has been seted up on the surface of short slab, fenestrate inside cover is equipped with hexagon bolt, the fixed orifices has been seted up to the surface of rotary disk near bottom position department, fixed mounting has the extension spring between hexagon bolt's the right-hand member and the side of short slab.
Preferably, the sealing device comprises a fixing plate and a sealing block, a thin block is fixedly mounted on the side face of the fixing plate, a second sliding groove is formed in the side face of the thin block, a blocking block is fixedly mounted on the side face of the sealing block, a second sliding block is fixedly mounted on the back face of the blocking block, and a spring is fixedly connected between the side face of the sealing block and the side face of the thin block.
Preferably, the bottom surface of the mounting plate is fixedly connected with the top surface of the mounting disc, and the gear is fixedly connected with the surface of the rotating rod.
Preferably, the short plate is fixedly connected with the rotating rod, and the size of the hexagon bolt is the same as that of the through hole and the fixing hole.
Preferably, the fixed plate is fixedly connected with the rotating rod, and the sealing block is matched with the liquid outlet in size.
Preferably, the outer surface of the connector body is square, and the inner wall of the connector body is round.
Preferably, the connecting piece body is made of ferrite stainless steel, the number of the liquid outlets is two, and the liquid outlets are symmetrically distributed on two sides of the connecting piece body.
Compared with the prior art, the invention has the advantages and positive effects that,
1. according to the rust-proof device, through the arrangement of the rust-proof device, in normal use, an operator controls the opening and closing of the valve by rotating the rotating disc, when the rotating disc rotates, the rotating disc drives the rotating rod to rotate, the rotating rod drives the gear to rotate, the gear drives the rack which is meshed with the gear to move, the rack drives the long plate to move, the long plate finally slides on the first sliding groove through the first sliding block, the long plate drives the brush plate to move while sliding, the brush plate rubs the surface of the rotating rod at the moment and brushes rust of the rotating rod, and therefore the reliable rust-proof effect is achieved integrally.
2. According to the invention, through the arrangement of the operating device, when the rotating disc is seriously worn due to long-time use and needs to be replaced, the hexagonal bolt is pulled outwards, the hexagonal bolt moves outwards in the perforation at the moment, the tension spring is pulled simultaneously, then a new rotating disc is inserted into the top end of the rotating rod, then the hexagonal bolt is released, at the moment, due to the tension force of the tension spring, the tension spring drives the hexagonal bolt to move towards the inside of the perforation and finally inserted into the inside of the fixing hole, at the moment, the rotating disc is fixed and is completely installed, the function of simply and conveniently replacing the rotating disc is achieved, when the rotating disc is seriously worn and needs to be replaced, the rotating disc can be simply and conveniently detached and replaced, the rotating disc is convenient and simple to use, the maintenance work of maintenance personnel is facilitated, and the maintenance.
3. According to the invention, by arranging the sealing device, when the valve is opened, the rotating disc is rotated, the rotating disc drives the rotating rod to rotate, the rotating rod drives the fixed plate to rotate, the fixed plate drives the thin block to rotate, the thin block finally drives the sealing block to rotate, the sealing block is finally far away from the liquid outlet, and at the moment, the liquid inlet is communicated with the liquid outlet, so that fluid can be conveyed.
Drawings
FIG. 1 is a front view of a detachable port sealing connector of a metal sealing rotary ball valve according to the present invention;
FIG. 2 is an enlarged view of the portion A of the detachable port sealing connector of the metal sealing ball-rotating valve in FIG. 1;
FIG. 3 is a rear cross-sectional view of a detachable port seal connection of a metal seal ball-rotating valve according to the present invention;
FIG. 4 is an enlarged view of the detachable port sealing connector of the metal sealing ball-rotating valve shown in FIG. 3B;
FIG. 5 is an enlarged view of the point C of FIG. 3 illustrating a detachable port sealing connector of a metal sealing ball-rotating valve according to the present invention;
FIG. 6 is a rear cross-sectional view of a detachable port seal connection of a metal seal ball-rotating valve according to the present invention;
FIG. 7 is a rear exploded view of a detachable port seal connection of a metal seal ball cock according to the present invention;
fig. 8 is an enlarged view of the detachable port sealing connector of the metal sealing ball-rotating valve in fig. 7 at D.
Illustration of the drawings:
1. a connector body; 2. a rotating rod; 3. mounting a disc; 4. a rust prevention device; 401. mounting a plate; 402. a gear; 403. a first chute; 404. a first slider; 405. a long plate; 406. a rack; 407. a fixed block; 408. brushing the board; 5. an operating device; 501. a short plate; 502. rotating the disc; 503. perforating; 504. a hexagon bolt; 505. a fixing hole; 506. a tension spring; 6. a sealing device; 601. a fixing plate; 602. a sealing block; 603. a thin block; 604. a second chute; 605. a stop block is shielded; 606. a second slider; 607. a spring; 7. a liquid outlet; 8. and (4) a liquid inlet.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the present invention is not limited to the specific embodiments of the present disclosure.
The specific arrangement and function of the rust prevention means 4, the operation means 5 and the sealing means 6 will be described in detail below.
As shown in fig. 1, 2, 3 and 4, the rust prevention device 4 includes a mounting plate 401 and a gear 402, a first chute 403 is formed at a top end of the mounting plate 401, a first slider 404 is slidably mounted on an inner wall of the first chute 403, a long plate 405 is fixedly mounted at a top end of the first slider 404, a rack 406 is fixedly mounted on a side surface of the long plate 405, a fixed block 407 is fixedly mounted on a top surface of the long plate 405, and a brush plate 408 is fixedly mounted at a top end of the fixed block 407.
The whole anti-rust device 4 achieves the effects that through the arrangement of the anti-rust device 4, in normal use, a worker controls the opening and closing of the valve by rotating the rotating disc 502, when the rotating disc 502 rotates, the rotating disc 502 drives the rotating rod 2 to rotate, the rotating rod 2 drives the gear 402 to rotate, the gear 402 drives the rack 406 engaged with the gear 402 to move, the rack 406 drives the long plate 405 to move, the long plate 405 finally slides on the first chute 403 through the first slider 404, the long plate 405 drives the brush plate 408 to move while sliding, the brush plate 408 rubs the surface of the rotating rod 2 at the moment, rust on the rotating rod 2 is brushed off, and the reliable rust prevention effect is integrally realized, when the staff ooff valve, brush board 408 all can brush on the surface of bull stick 2 to this rust on brushing bull stick 2 also can play the effect of polishing to bull stick 2, makes the life-span extension of bull stick 2, is difficult to go up the rust, does benefit to in-service use.
As shown in fig. 2 and 5, the operation device 5 includes a short plate 501 and a rotary disk 502, a through hole 503 is formed in the surface of the short plate 501, a hexagon bolt 504 is sleeved inside the through hole 503, a fixing hole 505 is formed in the position, close to the bottom end, of the surface of the rotary disk 502, and a tension spring 506 is fixedly installed between the right end of the hexagon bolt 504 and the side surface of the short plate 501.
The effect achieved by the entire operating device 5 is that, by providing the operating device 5, when the rotating disc 502 is used for a long time, when replacement is required due to severe wear, the hex bolt 504 moves outward inside the through hole 503 by pulling the hex bolt 504 outward, and pulls the tension spring 506, then a new rotating disk 502 is inserted into the top end of the rotating rod 2, and then the hexagon bolt 504 is released, at this time, due to the pulling force of the tension spring 506, the tension spring 506 drives the hexagon bolt 504 to move towards the inside of the through hole 503, and finally inserted into the inside of the fixing hole 505, at which time the rotating disk 502 is fixed, mounted, the above functions as a simple and convenient replacement of the rotating disc 502, when the rotating disc 502 is worn seriously and needs to be replaced, the rotating disc 502 can be simply and conveniently detached and replaced, the use is convenient and simple, the maintenance work of maintenance personnel is facilitated, and the maintenance efficiency is improved.
As shown in fig. 7 and 8, the sealing device 6 includes a fixing plate 601 and a sealing block 602, a thin block 603 is fixedly mounted on a side surface of the fixing plate 601, a second sliding slot 604 is formed on a side surface of the thin block 603, a blocking block 605 is fixedly mounted on a side surface of the sealing block 602, a second slider 606 is fixedly mounted on a back surface of the blocking block 605, and a spring 607 is fixedly connected between the side surface of the sealing block 602 and the side surface of the thin block 603.
The effect that its whole sealing device 6 reaches does, through setting up sealing device 6, when opening the valve, through rotating rotary disk 502, rotary disk 502 drives bull stick 2 and rotates, bull stick 2 drives fixed plate 601 and rotates, fixed plate 601 drives thin block 603 and rotates, thin block 603 finally drives sealed block 602 and rotates, liquid outlet 7 is finally kept away from to sealed block 602, inlet 8 is linked together with liquid outlet 7 this moment, can carry fluid, and because the design through two liquid outlets 7, can effectual adaptation high strength operation, also make fluid flow grow more simultaneously, and because the elasticity of spring 607, spring 607 drives sealed block 602 and slides in second spout 604 through second slider 606, and the inner wall of extrusion connecting piece body 1, the sealed effect of connecting piece body 1 has been improved, do benefit to practical use, work efficiency has been improved.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention in other forms, and any person skilled in the art may apply the above modifications or changes to the equivalent embodiments with equivalent changes, without departing from the technical spirit of the present invention, and any simple modification, equivalent change and change made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the technical spirit of the present invention.
Claims (8)
1. The utility model provides a but split type port sealing connection spare of metal seal spin ball valve, includes connecting piece body (1), its characterized in that: the connecting piece is characterized in that a rotating rod (2) penetrates through the top surface of the connecting piece body (1), an installation disc (3) is fixedly installed at the top end of the connecting piece body (1), an anti-rust device (4) is fixedly installed at the top end of the installation disc (3), an operation device (5) is fixedly installed at the top end of the connecting piece body (1), a sealing device (6) is fixedly installed at the bottom end of the connecting piece body (1), a liquid outlet (7) is communicated with the side surface of the connecting piece body (1), and a liquid inlet (8) is communicated with the bottom surface of the connecting piece body (1);
antirust device (4) include mounting panel (401) and gear (402), first spout (403) have been seted up on the top of mounting panel (401), the inner wall slidable mounting of first spout (403) has first slider (404), the top fixed mounting of first slider (404) has long board (405), the side fixed mounting of long board (405) has rack (406), the top surface fixed mounting of long board (405) has fixed block (407), the top fixed mounting of fixed block (407) has brush board (408).
2. The metal-seal rotary ball valve detachable port seal connection of claim 1, wherein: operating means (5) are including short board (501) and rotary disk (502), perforation (503) have been seted up on the surface of short board (501), the inside cover that perforates (503) is equipped with hex bolts (504), fixed orifices (505) have been seted up near bottom position department on the surface of rotary disk (502), fixed mounting has extension spring (506) between the right-hand member of hex bolts (504) and the side of short board (501).
3. The metal-seal rotary ball valve detachable port seal connection of claim 1, wherein: the sealing device (6) comprises a fixing plate (601) and a sealing block (602), a thin block (603) is fixedly mounted on the side face of the fixing plate (601), a second sliding groove (604) is formed in the side face of the thin block (603), a blocking block (605) is fixedly mounted on the side face of the sealing block (602), a second sliding block (606) is fixedly mounted on the back face of the blocking block (605), and a spring (607) is fixedly connected between the side face of the sealing block (602) and the side face of the thin block (603).
4. The metal-seal rotary ball valve detachable port seal connection of claim 1, wherein: the bottom surface of mounting panel (401) and the top surface of mounting disc (3) between fixed connection, fixed connection between the surface of gear (402) and bull stick (2).
5. The metal-seal rotary ball valve detachable port seal connection of claim 2, wherein: the short plate (501) is fixedly connected with the rotating rod (2), and the size of the hexagon bolt (504) is the same as that of the through hole (503) and the fixing hole (505).
6. The metal-seal rotary ball valve detachable port seal connection of claim 3, wherein: the fixed plate (601) is fixedly connected with the rotating rod (2), and the sealing block (602) is matched with the size of the liquid outlet (7).
7. The metal-seal rotary ball valve detachable port seal connection of claim 1, wherein: the outer surface of the connecting piece body (1) is square, and the inner wall of the connecting piece body (1) is circular.
8. The metal-seal rotary ball valve detachable port seal connection of claim 1, wherein: the connecting piece body (1) is made of ferrite stainless steel, the number of the liquid outlets (7) is two, and the liquid outlets (7) are symmetrically distributed on two sides of the connecting piece body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010780271.9A CN111963722A (en) | 2020-08-05 | 2020-08-05 | Detachable port sealing connector of metal sealing rotary ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010780271.9A CN111963722A (en) | 2020-08-05 | 2020-08-05 | Detachable port sealing connector of metal sealing rotary ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111963722A true CN111963722A (en) | 2020-11-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010780271.9A Pending CN111963722A (en) | 2020-08-05 | 2020-08-05 | Detachable port sealing connector of metal sealing rotary ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111963722A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1506399A (en) * | 1974-06-10 | 1978-04-05 | Int Paper Co | Stopcock |
| CN102829207A (en) * | 2012-08-03 | 2012-12-19 | 浙江恒森实业集团有限公司 | Electrically adjusted self-compensating plug valve |
| CN105626905A (en) * | 2016-03-14 | 2016-06-01 | 江苏海龙核科技股份有限公司 | Manually-rotating three-way adjustment valve |
| CN106363510A (en) * | 2016-11-22 | 2017-02-01 | 郑州搜趣信息技术有限公司 | Oil drill rod circumferential surface rust removing device |
| CN106956197A (en) * | 2017-03-14 | 2017-07-18 | 成都亨通兆业精密机械有限公司 | The implementation method that a kind of multiple bearings synchronously eliminate rust |
| CN107738168A (en) * | 2017-11-10 | 2018-02-27 | 杜鑫 | A kind of Water cooled air conditionerses machine shaft surface derusting sanding apparatus |
| CN207073622U (en) * | 2017-05-23 | 2018-03-06 | 上海翱泽石油设备有限公司 | A kind of mounting structure of handwheel and valve rod |
| CN109442087A (en) * | 2018-12-10 | 2019-03-08 | 阜宁联达机电制造有限公司 | A kind of valve of maintenance easy to disassemble |
| CN210461787U (en) * | 2019-08-09 | 2020-05-05 | 绵阳富临精工机械股份有限公司 | Control valve |
-
2020
- 2020-08-05 CN CN202010780271.9A patent/CN111963722A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1506399A (en) * | 1974-06-10 | 1978-04-05 | Int Paper Co | Stopcock |
| CN102829207A (en) * | 2012-08-03 | 2012-12-19 | 浙江恒森实业集团有限公司 | Electrically adjusted self-compensating plug valve |
| CN105626905A (en) * | 2016-03-14 | 2016-06-01 | 江苏海龙核科技股份有限公司 | Manually-rotating three-way adjustment valve |
| CN106363510A (en) * | 2016-11-22 | 2017-02-01 | 郑州搜趣信息技术有限公司 | Oil drill rod circumferential surface rust removing device |
| CN106956197A (en) * | 2017-03-14 | 2017-07-18 | 成都亨通兆业精密机械有限公司 | The implementation method that a kind of multiple bearings synchronously eliminate rust |
| CN207073622U (en) * | 2017-05-23 | 2018-03-06 | 上海翱泽石油设备有限公司 | A kind of mounting structure of handwheel and valve rod |
| CN107738168A (en) * | 2017-11-10 | 2018-02-27 | 杜鑫 | A kind of Water cooled air conditionerses machine shaft surface derusting sanding apparatus |
| CN109442087A (en) * | 2018-12-10 | 2019-03-08 | 阜宁联达机电制造有限公司 | A kind of valve of maintenance easy to disassemble |
| CN210461787U (en) * | 2019-08-09 | 2020-05-05 | 绵阳富临精工机械股份有限公司 | Control valve |
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Application publication date: 20201120 |
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| RJ01 | Rejection of invention patent application after publication |