CN208703176U - A kind of diaphragm valve pre-tightening adjusting - Google Patents
A kind of diaphragm valve pre-tightening adjusting Download PDFInfo
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- CN208703176U CN208703176U CN201821102874.8U CN201821102874U CN208703176U CN 208703176 U CN208703176 U CN 208703176U CN 201821102874 U CN201821102874 U CN 201821102874U CN 208703176 U CN208703176 U CN 208703176U
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- valve
- diaphragm
- nut
- adjusting
- lug boss
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Abstract
The utility model discloses the diaphragm valve that one kind can pre-tighten adjusting, including valve body, spool, valve rod, valve deck and diaphragm, the edge of the valve deck is equipped with extension table and positive stop lug boss, and the valve body is equipped with and the matched mounting platform of positive stop lug boss；The positive stop lug boss forms rigid seal by fastening screw with mounting platform and connects, the extension table, positive stop lug boss and mounting platform form internal cavities, the diaphragm is placed in internal cavities, the diaphragm edge resists positive stop lug boss, and the extension table, diaphragm and mounting platform are tightly connected by pre-tightening stud and pre-load nut.The diaphragm valve provided by the utility model for pre-tightening adjusting pre-tightens stud and repeats preload in ageing of rubber, ensure that the leakproofness of valve deck and valve body, avoid revealing, extend service life；The O-ring of valve stem nut further increases sealing performance；Valve stem top is equipped with limit, limits pan position under valve rod, eliminates the external world to diaphragm bring additional load, improves the service life of diaphragm.
Description
Technical field
The utility model relates to a kind of diaphragm valves, more particularly to a kind of diaphragm valve that can pre-tighten adjusting.
Background technique
Diaphragm valve is to be provided with a flexible diaphragm or composite membrane in valve body and valve deck, and closure member is connected with diaphragm
A kind of compression set.The advantages of diaphragm valve is that its operating mechanism is separated with medium loop, not only ensure that the pure of working media
Only, a possibility that while being also prevented from medium impulse maneuver mechanism workpiece in pipeline.In addition, not needed at valve rod using any
The independent sealing of form, unless being used in control hazardous medium as safety devices.In diaphragm valve, since working media contacts
Be only diaphragm and valve body, the two can use a variety of different materials, therefore the valve can preferably control a variety of work
Medium is especially suitable for the medium with chemical corrosivity or suspended particulate.The operating temperature of diaphragm valve is usually by diaphragm and valve body
The limitation of the used material of lining, its operating temperature range are about -50~175 DEG C.Diaphragm valve is easy and fast to dismantle and tie up
It repairs, replacement diaphragm can short time interior completion at the scene.
But common diaphragm valve has a disadvantage: when in use, for the stability for guaranteeing whole valve, valve body and valve deck carry out rigidity
Connection, be easy to cause after diaphragm of rubber aging in this way in flange nut relaxation, cause to leak.Therefore, designing one kind can pre-tighten
The diaphragm valve of adjusting is necessary.
Summary of the invention
The technical problem to be solved by the present invention is to provide the diaphragm valves that one kind can pre-tighten adjusting, after solving diaphragm aging
Screw relaxation, causes the problem of leaking.
The utility model to solve above-mentioned technical problem and the technical solution adopted is that provide it is a kind of can pre-tighten adjusting every
Film valve, including valve body, spool, valve rod, valve deck and diaphragm, the edge of the valve deck is equipped with extension table and positive stop lug boss, described
Valve body is equipped with and the matched mounting platform of positive stop lug boss；The positive stop lug boss and mounting platform are formed rigid close by fastening screw
Envelope connection, the extension table, positive stop lug boss and mounting platform form internal cavities, and the diaphragm is placed in internal cavities, described
Diaphragm edge resists positive stop lug boss, and the extension table, diaphragm and mounting platform are tightly connected by pre-tightening stud and pre-load nut.
Further, intake channel and exit passageway, the intake channel and exit passageway rank are provided in the valve body
It meets place and is equipped with partition protrusion, channel of the diaphragm on the upside of valve body is built into the conducting with partition male cooperation control diaphragm valve
And closing.
Further, the valve rod is connect by pin shaft with spool, and the spool passes through diaphragm screw and diaphragm middle part
Connection.
Further, the stem exterior is arranged with valve stem nut, is equipped at the valve stem nut bottom and valve stem contacts
Protrusion, the valve rod, which is equipped with, to be fastened in valve stem nut with the matched groove of protrusion, the valve rod by protrusion；The valve deck
It is set in outside valve stem nut.
Further, the valve stem nut bottom is equipped with limiting stand, and the contact position of the limiting stand and valve deck is equipped with washer.
Further, the outside wall surface that the valve stem nut is contacted with valve deck is equipped with annular seal groove, close in the annular
O-ring is equipped in sealing groove.
Further, locking nut is arranged with outside the valve stem nut, the locking nut is located above valve deck, the lock
Tight nut overcoat is equipped with handwheel, and the hand wheel rotating drives locking nut rotation, and the locking nut drives valve stem nut and valve
Bar moves up and down.
Further, gland nut is arranged with outside the valve stem nut, the gland nut is located above locking nut.
Further, the top of the valve rod is equipped with limit screw cap.
Further, the intake channel and exit passageway end face are equipped with mounting flange.
The utility model comparison the prior art have it is following the utility model has the advantages that it is provided by the utility model pre-tighten adjusting every
Film valve pre-tightens stud and repeats preload in ageing of rubber, ensure that the leakproofness of valve deck and valve body, avoid revealing, extend
Service life；The O-ring of valve stem nut further increases sealing performance；Valve stem top is equipped with limit, limits and shifts under valve rod
It sets, eliminates the external world to diaphragm bring additional load, improve the service life of diaphragm.
Detailed description of the invention
Fig. 1 is the diaphragm valve structure schematic diagram that adjusting can be pre-tightened in the utility model embodiment；
Fig. 2 is the diaphragm valve the schematic diagram of the section structure that adjusting can be pre-tightened in the utility model embodiment.
In figure:
| 1 valve body | 2 diaphragms | 3 diaphragm screws |
| 4 spools | 5 pin shafts | 6 valve rods |
| 7 valve decks | 8 valve stem nuts | 9 locking nuts |
| 10 gland nuts | 11 handwheels | 12 O-rings |
| 13 washers | 14 pre-tighten stud | 15 pre-load nuts |
| 16 fastening screws | 101 mounting platforms | 102 intake channels |
| 103 exit passageways | 104 partition protrusions | 701 extension tables |
| 702 positive stop lug boss | 703 limit screw caps |
Specific embodiment
The utility model will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the diaphragm valve structure schematic diagram that adjusting can be pre-tightened in the utility model embodiment；Fig. 2 is that the utility model is real
Apply the diaphragm valve the schematic diagram of the section structure that adjusting can be pre-tightened in example.
Referring to Figure 1 and Fig. 2, the diaphragm valve for pre-tightening adjusting in the utility model embodiment, including valve body 1, spool
4, valve rod 6, valve deck 7 and diaphragm 2, which is characterized in that the edge of the valve deck 5 is equipped with extension table 701 and positive stop lug boss 702,
The valve body 1 is equipped with and the matched mounting platform 101 of positive stop lug boss 702；The positive stop lug boss 702 and mounting platform 101 pass through
Fastening screw 16 forms rigid seal connection, and the extension table 701, positive stop lug boss 702 and mounting platform 101 form internal sky
Chamber, the diaphragm 2 are placed in internal cavities, and 2 edge of diaphragm resists positive stop lug boss 702, the extension table 701, diaphragm 2
It is tightly connected with mounting platform 101 by pre-tightening stud 14 and pre-load nut 15.
The diaphragm valve of adjusting can be pre-tightened in the utility model embodiment, and intake channel 102 is provided in valve body 1 and outlet is logical
Road 103, the intake channel 102 and 103 joining place of exit passageway are equipped with partition protrusion 104, and the diaphragm 2 is on the upside of valve body 1
Channel be built into and separate 104 cooperation control diaphragm valve of protrusion and be turned on and off.
Preferably, intake channel 102 and 103 end face of exit passageway are equipped with mounting flange, can easily be connected with pipeline
It connects.
The diaphragm valve of adjusting can be pre-tightened in the utility model embodiment, valve rod 6 is connect by pin shaft 5 with spool 4, the valve
Core 4 in the middle part of diaphragm screw 3 and diaphragm 2 by connecting.6 outer cover of valve rod be equipped with valve stem nut 8,8 bottom of valve stem nut with
6 contact position of valve rod is equipped with protrusion, and the valve rod 6, which is equipped with, is fastened on valve by groove with the matched groove of protrusion, the valve rod 6
In stem nut 8；The valve deck 7 is set in outside valve stem nut 8.8 bottom of valve stem nut be equipped with limiting stand, the limiting stand with
The contact position of valve deck 7 is equipped with washer.The outside wall surface that the valve stem nut 8 is contacted with valve deck 7 is equipped with annular seal groove, described
It is equipped with O-ring 12 in annular seal groove, further increases sealing performance.It is arranged with locking nut 9 outside valve stem nut 8, it is described
Locking nut 9 is located at 7 top of valve deck, and handwheel 11 is arranged with outside the locking nut 9, and the rotation of handwheel 11 drives locking nut
9 rotations, the locking nut 9 drive valve stem nut 8 and valve rod 6 to move up and down.Gland nut is arranged with outside the valve stem nut 8
9, the gland nut 9 is located at 9 top of locking nut.
Preferably, the top of valve rod 6 is equipped with limit screw cap 703, limits the lower pan position of valve rod 6.
The diaphragm valve of adjusting can be pre-tightened in the utility model embodiment, in actual use, element and running part in valve
After the assembly is completed, valve body 1 and valve deck 7 first are pre-tightened by defined torque with pre-tightening stud 14 and pre-load nut 15, then by valve deck four
The fastening screw 16 in week is tightened.In this way while pre-tightening, valve body 1 is reached with valve deck 7 and contacts firmly, enhance the steady of whole valve
Qualitative and safety.After 2 aging stress relaxation of diaphragm, the fastening screw 16 of 7 surrounding of valve deck is unclamped a little, is tightened again pre-
Tight stud 14 and pre-load nut 15 compress diaphragm, finally tighten the fastening screw 16 of 7 surrounding of valve deck again.
In conclusion the diaphragm valve provided by the utility model for pre-tightening adjusting, pre-tightening stud 14 can in ageing of rubber
It repeats to pre-tighten, ensure that the leakproofness of valve deck 7 and valve body 1, avoid revealing, extend service life；Valve stem nut 8 is equipped with O-shaped
Circle 12 further increases sealing performance；It is equipped with limit screw cap 703 at the top of valve rod 6, limits the lower pan position of valve rod 6, eliminates outer
Boundary gives diaphragm 2 bring additional load, improves the service life of diaphragm 2；Structure is simple, disassembly is easy for installation, easy to repair.
Although the utility model is disclosed as above with preferred embodiment, so it is not intended to limit the utility model, any
Those skilled in the art, without departing from the spirit and scope of the utility model, when can make a little modification and it is perfect, therefore this
The protection scope of utility model, which is worked as, to be subjected to the definition of the claims.
Claims (10)
1. one kind can pre-tighten the diaphragm valve of adjusting, including valve body (1), spool (4), valve rod (6), valve deck (7) and diaphragm (2),
Be characterized in that, the edge of the valve deck (7) is equipped with extension table (701) and positive stop lug boss (702), the valve body (1) equipped with
Positive stop lug boss (702) matched mounting platform (101)；The positive stop lug boss (702) and mounting platform (101) pass through fastening screw
(16) rigid seal connection is formed, the extension table (701), positive stop lug boss (702) and mounting platform (101) form internal empty
Chamber, the diaphragm (2) are placed in internal cavities, and diaphragm (2) edge resists positive stop lug boss (702), the extension table
(701), diaphragm (2) and mounting platform (101) are tightly connected by pre-tightening stud (14) and pre-load nut (15).
2. the diaphragm valve of adjusting can be pre-tightened as described in claim 1, which is characterized in that be provided with import in the valve body (1)
Channel (102) and exit passageway (103), the intake channel (102) and exit passageway (103) joining place are equipped with partition protrusion
(104), channel of the diaphragm (2) on the upside of valve body (1) is built into the conducting with partition raised (104) cooperation control diaphragm valve
And closing.
3. the diaphragm valve of adjusting can be pre-tightened as described in claim 1, which is characterized in that the valve rod (6) passes through pin shaft (5)
It is connect with spool (4), the spool (4) in the middle part of diaphragm screw (3) and diaphragm (2) by connecting.
4. the diaphragm valve of adjusting can be pre-tightened as described in claim 1, which is characterized in that valve rod (6) outer cover is equipped with valve
Stem nut (8), valve stem nut (8) bottom and valve rod (6) contact position are equipped with protrusion, and the valve rod (6) is equipped with and protrusion
Matched groove, the valve rod (6) are fastened in valve stem nut (8) by groove；The valve deck (7) is set in valve stem nut
(8) outside.
5. the diaphragm valve of adjusting can be pre-tightened as claimed in claim 4, which is characterized in that valve stem nut (8) bottom is equipped with
Limiting stand, the limiting stand and the contact position of valve deck (7) are equipped with washer.
6. the diaphragm valve of adjusting can be pre-tightened as claimed in claim 4, which is characterized in that the valve stem nut (8) and valve deck (7)
The outside wall surface of contact is equipped with annular seal groove, is equipped with O-ring (12) in the annular seal groove.
7. the diaphragm valve of adjusting can be pre-tightened as claimed in claim 4, which is characterized in that be arranged with outside the valve stem nut (8)
Locking nut (9), the locking nut (9) are located above valve deck (7), and handwheel (11), institute are arranged with outside the locking nut (9)
It states handwheel (11) rotation and drives locking nut (9) rotation, the locking nut (9) drives valve stem nut (8) and valve rod (6) up and down
It is mobile.
8. the diaphragm valve of adjusting can be pre-tightened as claimed in claim 4, which is characterized in that be arranged with outside the valve stem nut (8)
Gland nut (10), the gland nut (10) are located above locking nut (9).
9. the diaphragm valve of adjusting can be pre-tightened as described in claim 1, which is characterized in that the top of the valve rod (6) is equipped with
Limit screw cap (703).
10. the diaphragm valve of adjusting can be pre-tightened as claimed in claim 2, which is characterized in that the intake channel (102) and outlet
Channel (103) end face is equipped with mounting flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821102874.8U CN208703176U (en) | 2018-07-12 | 2018-07-12 | A kind of diaphragm valve pre-tightening adjusting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821102874.8U CN208703176U (en) | 2018-07-12 | 2018-07-12 | A kind of diaphragm valve pre-tightening adjusting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208703176U true CN208703176U (en) | 2019-04-05 |
Family
ID=65938424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821102874.8U Active CN208703176U (en) | 2018-07-12 | 2018-07-12 | A kind of diaphragm valve pre-tightening adjusting |
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| Country | Link |
|---|---|
| CN (1) | CN208703176U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757989A (en) * | 2018-07-12 | 2018-11-06 | 上海核阀门股份有限公司 | A kind of diaphragm valve pre-tightening adjusting |
| CN117287528A (en) * | 2023-11-24 | 2023-12-26 | 百安消防科技有限公司 | Deluge valve device and use method thereof |
-
2018
- 2018-07-12 CN CN201821102874.8U patent/CN208703176U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757989A (en) * | 2018-07-12 | 2018-11-06 | 上海核阀门股份有限公司 | A kind of diaphragm valve pre-tightening adjusting |
| CN117287528A (en) * | 2023-11-24 | 2023-12-26 | 百安消防科技有限公司 | Deluge valve device and use method thereof |
| CN117287528B (en) * | 2023-11-24 | 2024-02-13 | 百安消防科技有限公司 | Deluge valve device and use method thereof |
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