CN203979614U - A kind of inside screw non-rising stem type gate valve that can lock and indicate open/close states - Google Patents
A kind of inside screw non-rising stem type gate valve that can lock and indicate open/close states Download PDFInfo
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- CN203979614U CN203979614U CN201420368579.2U CN201420368579U CN203979614U CN 203979614 U CN203979614 U CN 203979614U CN 201420368579 U CN201420368579 U CN 201420368579U CN 203979614 U CN203979614 U CN 203979614U
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Abstract
It is a kind of simple in structure, with low cost that the utility model provides, the easy to operate inside screw non-rising stem type gate valve that can lock and indicate open/close states.It comprises valve body and the valve gap being equipped with, and the valve rod being threaded with valve plate in valve body through valve gap, the handwheel that the free end of valve rod arranges, and valve rod is by comprising seal arrangement and the valve gap rotary seal of end part seal nut; Valve rod exposes the part of valve gap by the thread bush that is threaded arranging, and is fixedly installed pointer on thread bush; Described end part seal nut upper end is fixedly installed the sleeve of offering restraining groove; Thread bush is arranged in sleeve, and pointer is through restraining groove layout, and pointer stroke high-low limit position indicates and close respectively sign with the unlatching arranging on sleeve corresponding; On described valve gap, be fixedly connected with lock nut, the free end of lock nut is provided with locking aperture, and when valve plate moves to working position, handwheel is fixedly connected with lock nut by the link through locking aperture setting.
Description
Technical field
The utility model belongs to pipeline and carries the valve mechanism in fluid system, is specially a kind of inside screw non-rising stem type gate valve that can lock and indicate open/close states.
Background technique
Its feature of inside screw non-rising stem type gate valve is that body is simple, and structure length is short, opens and closes more laborsavingly, and anufacturability is good.But himself also exists defect, when inside screw non-rising stem type gate valve is installed in pipe path, from outward appearance, cannot tell the current state that opens and closes of this valve, this just brings a lot of troubles to site operation personnel, and its Applicable scope is also restricted.Disclosed China Patent No. is 201320086771.8 " inside screw non-rising stem type gate valve of belt switch indication and locking ", it discloses a kind of ono-rising-stem valve structure that can show valve switch state and locking use state, but, its switch indicating structure is comparatively complicated, cost is higher, and the elasticity in workman's later stage assembly process is low, and installation requirement is high, if lockhole corresponding position deviation, cannot realize locking smoothly while installing; And in use because its structural strength is low, and indirectly moving element is locked by accessory, but do not limit the rotation of handwheel, therefore very easily occur misoperation, cause the damage of valve body structure, make it completely stuck.
Model utility content
For the problems of the prior art, it is a kind of simple in structure, with low cost that the utility model provides, the easy to operate inside screw non-rising stem type gate valve that can lock and indicate open/close states.
The utility model is to be achieved through the following technical solutions:
A kind of inside screw non-rising stem type gate valve that can lock and indicate open/close states, comprise the valve body and the valve gap that are equipped with, and the valve rod being threaded with valve plate in valve body through valve gap, the handwheel that the free end of valve rod arranges, valve rod is by comprising seal arrangement and the valve gap rotary seal of end part seal nut; Valve rod exposes the part of valve gap by the thread bush that is threaded arranging, and is fixedly installed pointer on thread bush; Described end part seal nut upper end is fixedly installed the sleeve of offering restraining groove; Thread bush is arranged in sleeve, and pointer is through restraining groove layout, and pointer stroke high-low limit position indicates and close respectively sign with the unlatching arranging on sleeve corresponding; On described valve gap, be fixedly connected with lock nut, the free end of lock nut is provided with locking aperture, and when valve plate moves to working position, handwheel is fixedly connected with lock nut by the link through locking aperture setting.
Preferably, seal arrangement also comprises end setscrew nut; Setscrew nut one end and valve gap inner wall of end are tightly connected, and the other end is connected with the lower end of sealing nut; In the space that setscrew nut and sealing nut and valve rod surround, sealing is provided with the first packing ring and the second packing ring successively.
Further, between end setscrew nut and valve gap end, sealing arranges liner.
Preferably, the direction of screw thread is identical with the direction of valve rod lower end and valve plate matching thread.
Preferably, lock nut is connected with valve gap through the tapped hole arranging on valve gap, and is locked by nut and the valve gap coordinating.
Preferably, link adopts padlock.
Preferably, between valve body and valve gap, be provided with seal washer.
Preferably, on sleeve, symmetry is offered two restraining grooves; Pointer is symmetrical set, and two ends are arranged through corresponding restraining groove respectively.
Compared with prior art, the utlity model has following useful technique effect:
The utility model by increasing threaded one end on the valve rod of inside screw non-rising stem type gate valve, utilize with the thread bush of screw-thread fit and with the fixing pointer of thread bush, when valve rod drives valve plate to move up and down, thread bush drives pointer to do synchronous elevating movement, and can point to accurately sleeve unlatching, close and indicate position, thereby can be the directly clear and definite current active state of inside screw non-rising stem type gate valve that obtains; The lock nut that water flowing utilization arranges, directly fixes the position of handwheel and working state, and therefore current working state can be by arbitrarily operation change, the destruction to valve arrangement of having avoided misoperation to bring, and simple in structure, with low cost, using scope is wide.
Further, utilize end setscrew nut to guarantee seal arrangement and the direct stabilized seal of valve gap, and for the first packing ring and the second packing ring provide effect pedestal, by with the coordinating of end part seal nut, realized the reliable shaft end seal of valve rod.
Further, the arranging of hand of spiral guaranteed that valve rod is when rotating, the moving direction of thread bush and valve plate consistent, be convenient to direct to unlatching, close the setting of sign.
Further, lock nut detachable fastening setting to valve gap by screw thread and nut, what not only can guarantee to make is stable, and guaranteed dismounting and install convenient and simple.
Further, adopt padlock as link, simple to operate, easy to use, and can meet practicability demand; On sleeve, be symmetrical arranged two restraining grooves, can guarantee that it is to the uniform and stable active force of pointer, thereby can along valve rod, move up and down stably by the both sides stressed pointer that makes of while, avoid the stuck and inefficacy producing because of unbalance stress.
Accompanying drawing explanation
Fig. 1 is the cut-open view of final assembly of inside screw non-rising stem type gate valve described in the utility model example.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the end part seal nut sectional view described in the utility model example.
Fig. 4 is the thread bush sectional view described in the utility model example.
Fig. 5 is the total described tube-in-tube structure schematic diagram of the utility model example; Wherein, 5a is partial sectional view, the viewgraph of cross-section that 5b is 5a.
Fig. 6 is the pointer structure schematic diagram described in the utility model example.
Wherein: valve body 1, valve plate 2, valve rod 3, seal washer 4, valve gap 5, end setscrew nut 6, liner 7, the first packing ring 8, the second packing rings 9, locking aperture 10, lock nut 11, end part seal nut 12, sleeve 13, thread bush 14, handwheel 15, screw thread 16, pointer 17.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
The utility model, a kind of inside screw non-rising stem type gate valve that can lock and indicate open/close states, as shown in Figure 1, it comprises valve body 1 and the valve gap 5 being equipped with, and the valve rod 3 being threaded with valve plate 2 in valve body 1 through valve gap 5, the handwheel 15 that the free end of valve rod 3 arranges, valve rod 3 is by comprising seal arrangement and valve gap 5 rotary seals of end part seal nut 12; Valve rod 3 exposes the part of valve gap 5 by the screw thread 16 connecting thread covers 14 that arrange, and is fixedly installed pointer 17 on thread bush 14; End part seal nut 12 upper ends are fixedly installed the sleeve 13 of offering restraining groove; Thread bush 14 is arranged in sleeve 13, and pointer 17 is through restraining groove layout, and pointer 17 stroke high-low limit positions indicate and close respectively sign with the unlatching arranging on sleeve 13 corresponding; As depicted in figs. 1 and 2, be fixedly connected with lock nut 11 on valve gap 5, the free end of lock nut 11 is provided with locking aperture 10, and when valve plate 2 moves to working position, handwheel 15 is fixedly connected with lock nut 11 by the link arranging through locking aperture 10.
Wherein, as shown in Figure 1, seal arrangement also comprises end setscrew nut 6; Setscrew nut 6 one end and valve gap 5 inner wall of ends are tightly connected, and the other end is connected with the lower end of sealing nut 12; In the space that setscrew nut 6 and sealing nut 12 and valve rod 3 surround, sealing is provided with the first packing ring 8 and the second packing ring 9 successively.Between end setscrew nut 6 and valve gap 5 ends, sealing arranges liner 7.The direction of screw thread 16 is identical with the direction of valve rod lower end and valve plate 2 matching threads.As depicted in figs. 1 and 2, lock nut 11 is connected with valve gap 5 through the tapped hole arranging on valve gap 5, and is locked by nut and the valve gap 5 coordinating.The link of take in this preferred embodiment adopts padlock to describe as example; As shown in Figure 1, between valve body 1 and valve gap 5, be provided with seal washer 4.As shown in Figure 5, on sleeve 13, symmetry is offered two restraining grooves; As shown in Figure 6, pointer 17 is symmetrical set, and two ends are arranged through corresponding restraining groove respectively.
It is concrete that because the open-shut device of inside screw non-rising stem type gate valve is valve plate 2, moving direction and the flow direction of valve plate 2 are perpendicular, when gate valve is closed, by external force, by force valve plate 2 are pressed to valve seat in use, the sealing of assurance sealing surface, pilot line lead to, put state.The travel position of whole opening-closing process gate valve rod 2 and handwheel 15 is not made and is changed.
As shown in Figure 1, in valve body 1, there is the valve pocket path for the circulation of pipeline medium, in the center portion of valve pocket, there is the valve plate 2 with valve pocket fitted seal, valve rod 3 is connected by trapezoidal thread with valve plate 2, at the top of valve rod 3, handwheel 15 is housed, by rotating handwheel 15, valve rod 3 drives valve plate 2 to move up and down, when valve plate 2 lifting heights equal valve latus rectum 1:1, valve is fully opened; When clockwise rotating handwheel 15, valve plate 2 declines and blocks cavity path, by the impacting force being carried on valve rod 3, valve plate 2 is pressed to the valve pocket of carving type sealing surface, guarantees the sealing of sealing surface.
Valve gap 5 is threaded connection with valve body 1, is provided with seal washer 4, by carrying out reliable sealing between 4 pairs of valve gaps 5 of disposable press seal packing ring and valve body 1 at valve gap 5 and the connection part of valve body 1.
Valve rod 3 is vertical to be coordinated with valve gap 5 by the positive stop lug boss on valve rod 3 through valve gap 5, limits its relevant position, in the end of valve gap 5, is provided with end setscrew nut 6; The first packing ring 8 and the second packing ring 9 are housed between end setscrew nut 6 and valve rod 3, by end part seal nut 12, its compression are carried out to the reliable sealing of axle head.At valve gap 5 and 6 of end setscrew nuts, with liner 7, carry out disposable press seal.
Gate valve indicating device is on the top that exposes to valve gap 5 at valve rod 3, to increase the screw thread 16 of one section of closely-pitched, and screw thread 16 directions are identical with valve plate 2 matching thread directions with valve rod 3 lower ends.At screw thread 16 place's connecting thread covers 18, pointer 17 is housed on thread bush 18, on the top of end part seal nut 12, there is outside thread, sleeve 13 is connected and fixes with end part seal nut 12 by screw thread.As shown in Figure 5, on sleeve 13, have the open slotted hole in one end, this slotted hole is as the restraining groove of pointer 17, pointer 17 is fixed on thread bush 18 through slotted hole on sleeve 13, thread bush 18 structures as shown in Figure 4, pointer 17 structures as shown in Figure 6, are provided with on sleeve 13 and open sign and close sign, as shown in Figure 2.When handwheel 15 rotates counterclockwise, valve rod 3 drives valve plate 2 to do lifter motion, and thread bush 18 also drives pointer 17 to move upward, and when valve plate 2 is opened completely, pointer 17 points to the position of opening sign on sleeve 13; When handwheel 15 clockwise rotates, valve rod 3 drives valve plate 2 to move downward, and thread bush 18 also drives pointer 17 to move down, and when valve plate 2 and valve body 1 seal completely, pointer 17 points to the position of closing sign on sleeve 13; Realized the object that can directly read inside screw non-rising stem type gate valve work at present state from outward appearance.
On valve gap 5, have tapped hole, screw rod 11, through tapped hole, fix valve gap 5 and screw rod 11 lock with nut, and the lock nose by padlock passes restraining groove and the handwheel 15 on threaded stem 11, pinning handwheel 15 cannot arbitrarily rotate, and has realized the target of locking work at present state.
Claims (8)
1. the inside screw non-rising stem type gate valve that can lock and indicate open/close states, it is characterized in that, comprise the valve body (1) and the valve gap (5) that are equipped with, and the valve rod (3) being threaded with valve plate (2) in valve body (1) through valve gap (5), the handwheel (15) that the free end of valve rod (3) arranges, valve rod (3) is by comprising seal arrangement and valve gap (5) rotary seal of end part seal nut (12); Described valve rod (3) exposes the part of valve gap (5) by screw thread (16) the connecting thread cover (14) arranging, and is fixedly installed pointer (17) on thread bush (14); Described end part seal nut (12) upper end is fixedly installed the sleeve (13) of offering restraining groove; Thread bush (14) is arranged in sleeve (13), and pointer (17) passes restraining groove and arranges, it is corresponding that the unlatching that pointer (17) stroke high-low limit position above arranges with sleeve (13) respectively indicates and close sign; On described valve gap (5), be fixedly connected with lock nut (11), the free end of lock nut (11) is provided with locking aperture (10), when valve plate (2) moves to working position, handwheel (15) is fixedly connected with lock nut (11) by the link arranging through locking aperture (10).
2. a kind of inside screw non-rising stem type gate valve that can lock and indicate open/close states according to claim 1, is characterized in that, described seal arrangement also comprises end setscrew nut (6); Setscrew nut (6) one end and valve gap (5) inner wall of end are tightly connected, and the other end is connected with the lower end of sealing nut (12); In the space that setscrew nut (6) and sealing nut (12) and valve rod (3) surround, sealing is provided with the first packing ring (8) and the second packing ring (9) successively.
3. a kind of inside screw non-rising stem type gate valve that can lock and indicate open/close states according to claim 2, is characterized in that, between described end setscrew nut (6) and valve gap (5) end, sealing arranges liner (7).
4. a kind of inside screw non-rising stem type gate valve that can lock and indicate open/close states according to claim 1, is characterized in that, the direction of described screw thread (16) is identical with the direction of valve rod lower end and valve plate (2) matching thread.
5. a kind of inside screw non-rising stem type gate valve that can lock and indicate open/close states according to claim 1, it is characterized in that, described lock nut (11) is connected with valve gap (5) through the upper tapped hole arranging of valve gap (5), and is locked by nut and the valve gap (5) coordinating.
6. a kind of inside screw non-rising stem type gate valve that can lock and indicate open/close states according to claim 1, is characterized in that, described link adopts padlock.
7. a kind of inside screw non-rising stem type gate valve that can lock and indicate open/close states according to claim 1, is characterized in that, between described valve body (1) and valve gap (5), is provided with seal washer (4).
8. a kind of inside screw non-rising stem type gate valve that can lock and indicate open/close states according to claim 1, is characterized in that, the upper symmetry of described sleeve (13) is offered two restraining grooves; Pointer (17) is symmetrical set, and two ends are arranged through corresponding restraining groove respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420368579.2U CN203979614U (en) | 2014-07-04 | 2014-07-04 | A kind of inside screw non-rising stem type gate valve that can lock and indicate open/close states |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420368579.2U CN203979614U (en) | 2014-07-04 | 2014-07-04 | A kind of inside screw non-rising stem type gate valve that can lock and indicate open/close states |
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| Publication Number | Publication Date |
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| CN203979614U true CN203979614U (en) | 2014-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420368579.2U Active CN203979614U (en) | 2014-07-04 | 2014-07-04 | A kind of inside screw non-rising stem type gate valve that can lock and indicate open/close states |
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| CN (1) | CN203979614U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104154249A (en) * | 2014-08-28 | 2014-11-19 | 能发伟业铁岭阀门股份有限公司 | Butterfly valve body movable sealing ring locking device |
| CN107747648A (en) * | 2017-11-16 | 2018-03-02 | 河北金桥平衡阀门有限公司 | A kind of ono-rising-stem valve valve element opens and closes the instruction device of position |
| CN110397786A (en) * | 2019-07-24 | 2019-11-01 | 国网浙江省电力有限公司检修分公司 | A kind of GIS gas chamber ono-rising-stem valve limiting device and its installation method |
-
2014
- 2014-07-04 CN CN201420368579.2U patent/CN203979614U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104154249A (en) * | 2014-08-28 | 2014-11-19 | 能发伟业铁岭阀门股份有限公司 | Butterfly valve body movable sealing ring locking device |
| CN107747648A (en) * | 2017-11-16 | 2018-03-02 | 河北金桥平衡阀门有限公司 | A kind of ono-rising-stem valve valve element opens and closes the instruction device of position |
| CN110397786A (en) * | 2019-07-24 | 2019-11-01 | 国网浙江省电力有限公司检修分公司 | A kind of GIS gas chamber ono-rising-stem valve limiting device and its installation method |
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