CN204805573U - Starting and stopping mechanism of little torque control valve, stop valve - Google Patents
Starting and stopping mechanism of little torque control valve, stop valve Download PDFInfo
- Publication number
- CN204805573U CN204805573U CN201520322195.1U CN201520322195U CN204805573U CN 204805573 U CN204805573 U CN 204805573U CN 201520322195 U CN201520322195 U CN 201520322195U CN 204805573 U CN204805573 U CN 204805573U
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- valve
- flap
- pressure medium
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Abstract
The utility model relates to a starting and stopping mechanism of little torque control valve, stop valve belongs to fluid control valve door field. 1, design cylindrical barrel on the valve clack, design the round tubular trestle fixed for the valve body below the valve gap, diaphragm of installation on barrel and support, on the internal diameter part of diaphragm compresses tightly the barrel with the lock mother, the external diameter is partial compresses tightly with valve body, support respectively, the valve gap and unfamiliar between inclosed cavity of formation for the pressure medium of isolated valve clack both sides. 2, bear high -pressure medium one side with the valve clack and design the passageway with low pressure medium one side, make the high -pressure medium pass through the passageway and get into above -mentioned cavity, now become the linker structure with the cavity, promptly cavity and high -pressure medium one side equipressure. At this moment, on the interior pressure of cavity was used in the bracket end face area, the bracket end face area was cancelled each other with the area of most following pressure to reduce the moment of opening and close of valve by a wide margin.
Description
Technical field
The utility model relates to the opening/closing mechanism that fluid medium carries out regulating and controlling valve, stop valve, belongs to fluid control valve field.
Background technique
In flowing medium control valve field, modulating valve, stop valve belong to forced seal formula valve, when valve closing, must apply pressure, do not leak with forced seal face to flap.When medium is by when entering valve below flap, the resistance overcome required for steering force, be the friction of valve rod and filler and the thrust produced by the pressure of medium, the power of the force rate valve opening door of closing valve is large, so the diameter of valve rod wants large, otherwise the fault of valve rod bending can be there is.
The moment of torsion of modulating valve, stop valve (hereinafter referred to as valve) refers to valve opening or closes the active force or moment that must to apply.It is a comprehensive technical indexes of valve action under pressure medium effect.During throttle down, need to make to form certain seal pressure between open-shut device and valve seat two sealing surface, also to overcome between valve rod and filler, between valve rod and the screw thread of nut simultaneously, the frictional force of valve stem end support place and other friction part positions, thus must apply certain closing forces and close moment.In addition, valve is in opening-closing process, and required hoisting capacity and keying moment are changes.Should make every effort to during Design and manufacture valve reduce moment when opening and closing.
In order to reduce operational torque, large bore valves adopts worm and gear gear mostly, the operating process opened and closed is consuming time longer, otherwise, operational torque (can be the diameter of handwheel or the length of spanner) during opening/shutting valve will increase, otherwise people, even two people cannot open and close it.
Valve in off position time, assuming that the pressure of import medium is born in open-shut device (flap) side, opposite side bears is atmospheric pressure (namely flap bears large pressure reduction), inside nominal diameter is larger, the area bearing import pressure is larger, with the valve of DN200, open-shut device diameter is 200 millimeters (20 centimetres), bear import pressure is that 16 Kilogram Force Per Square Centimeters calculate: the pressure that open-shut device bears is P=10
2* π * 16 ≈ 5026 kgf, visible open-shut device diameter is greatly open and close the large principal element of moment, how to reduce the pressure of open-shut device, becomes obstacle impassable in large bore valves design, production.
In addition, the flap of conventional valves be by valve rod, Stem Mut is connected with valve gap is a cantilever beam structure, under flap small guide vane opening state, the acting in conjunction of the matching gap of the self gravitation of the frictional force, flap and the Stem Mut that flap are produced due to media flow, valve rod and Stem Mut, flap can produce swing, clash into valve seat, the shock accumulated over a long period can cause valve seat to come off.In the manufacturer of valve, for solving the problem that valve seat comes off, design the structure that a lot of valve seat is connected with valve body, as: valve seat is welded on valve body, valve seat is connected with valve body screw thread, the former increases difficulty of processing, add manufacture cost, the latter is large bore valves complex process during machining internal thread on valve body.
Summary of the invention
The utility model will realize a kind of area that significantly can reduce to bear medium entrance pressure, thus reduce the operating device of valve opening and closing moment of torsion, solution modulating valve, stop valve manufacturing enterprise produce the bottleneck that large bore valves must configure actuator, and the technical problem that valve seat comes off.
The utility model solves the technological scheme that its technical problem adopts:
A kind of little torque adjusting valve, the opening/closing mechanism of stop valve, copper sheathing, valve seat, interior hexagonal cone end Cock screw, order is arranged on valve body, Stem Mut, valve rod, barrier film, packing ring, locknut is linked in sequence on flap, become a flap assembly, flap assembly and support, T-shaped key, seal ring, valve gap order loads valve body, be pressed on valve body with several hexagon socket cap head screw, it is characterized in that: on flap, design cylindrical tube, design relative to the fixing cylinder-shaped bracket of valve body below valve gap, on cylindrical shell and support, a barrier film is installed, the inner-diameter portion whose of barrier film is with on locknut hold-down barrel, outer radius portion respectively with valve body, support compresses, the cavity that formation one is airtight between valve gap and barrier film, in order to the pressure medium of isolated flap both sides, step is designed in support, barrier film is supported when flap closed condition.
Flap is born high-pressure medium side and passage is designed in low-pressure medium side, makes high-pressure medium enter above-mentioned cavity by passage, become connecting vessels structure with cavity below, namely cavity and high-pressure medium side isobaric.
Valve rod is become non-tight structure with the driven Design of flap, and namely the hole of flap upper valve rod nut is through hole.
Design the fixed bearing that can coordinate with valve rod lower end periphery in valve body inlet, restriction valve rod is except axial displacement and all the other degrees of freedom except its axis rotates.
In the valve seat groove of valve body, design V-type groove, screw designed by valve seat wall, screw in valve seat when valve seat assembles, in the V-type groove of jacking valve body with several interior hexagonal cone end Cock screw.
1. on flap, design cylindrical tube (hereinafter referred to as " cylindrical shell "), design relative to the fixing cylinder-shaped bracket (hereinafter referred to as " support ") of valve body below valve gap, on cylindrical shell and support, a barrier film is installed, the inner-diameter portion whose of barrier film with on locknut hold-down barrel, outer radius portion compresses with valve body, support respectively, the cavity that formation one is airtight between valve gap and barrier film, in order to the pressure medium of isolated flap both sides, design step in support, barrier film is supported when flap closed condition.
2. flap is born high-pressure medium side (hereinafter referred to as " below ") and low-pressure medium side (hereinafter referred to as " above ") designs passage, high-pressure medium is made to enter above-mentioned cavity by passage, connecting vessels structure is become below, i.e. cavity and high-pressure medium side equipressure with cavity.At this moment, the pressure action in cavity is on bracket end face area, and below bracket end face area and major part, the area of pressure cancels each other, thus significantly reduces the keying moment of valve.
3., now, because flap above and below is isobaric, the Stem Mut on valve rod and flap just must not consider poorly sealed and leakage problems that is that produce, therefore valve rod is become non-tight structure with the driven Design of flap, and namely the hole of flap upper valve rod nut is through hole.
4. design the fixed bearing that can coordinate with valve rod lower end periphery in valve body inlet, restriction valve rod is except axial displacement and all the other degrees of freedom except its axis rotates, and when eliminating open/close states, the impingement phenomenon of flap and valve seat, increases the working life of valve.
5. in the valve seat groove of valve body, design V-type groove, screw designed by valve seat wall, screw in valve seat with several interior hexagonal cone end Cock screw when valve seat assembles, in the V-type groove of jacking valve body, prevent valve seat from coming off.
The advantage that the utility model is compared with prior art had and positive role:
1. technique computes that must be complicated just can complete design;
2. be applied to modulating valve, stop valve that flowing medium carries out controlling, under flap bears large pressure differential, very little moment of torsion opening/shutting valve can be used;
3, the Placement of valve seat and valve body is simple, reliable, increases the working life of valve;
The axial pressure of 4, bearing due to valve rod is very little, and it is smaller that the diameter of valve rod, the size of Stem Mut can design, and reduces the manufacture cost of valve;
5, due to the reduction of valve opening and closing moment, modulating valve, stop valve no longer need the industrial practice that must be equipped with actuator because operation moment of torsion when opening and closing is large, significantly can reduce the manufacture cost of valve;
6, vertical setting can be imported and exported with valve, also can import and export inclination several angle with valve and arrange;
7, can be applicable to heating air conditioning digital locked balance valve.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further detailed:
Fig. 1 is the longitudinal section tectonic maps (flap closed condition) of opening/closing mechanism embodiment of little torque adjusting valve, stop valve.
Fig. 2 is the longitudinal section tectonic maps (flap opening state) of opening/closing mechanism embodiment of little torque adjusting valve, stop valve.
Fig. 3 is the schematic diagram of valve seat and joint structure connecting valve in the opening/closing mechanism of little torque adjusting valve, stop valve.
1. valve bodies, 2. hexagon socket cap head screw, 3. valve gap, 4. seal ring, 5. barrier film, 6. support, 7. locknut, 8. valve rod, 9. packing ring in figure, 10.T type key, 11. flaps, 12. Stem Muts, 13. sealing gaskets, 14. valve seats, hexagonal cone end Cock screw in 15,16. copper sheathings.
Embodiment
In FIG, copper sheathing [16], valve seat [14], interior hexagonal cone end Cock screw [15], order is arranged on valve body [1], sealing gasket [13], Stem Mut [12], valve rod [8], barrier film [5], packing ring [9], locknut [7] is linked in sequence on flap [11], become a flap assembly, flap assembly and support [6], T-shaped key [10], seal ring [4], valve gap [3] order loads valve body [1], be pressed on valve body [1] with several hexagon socket cap head screw [2], in figure, a is medium entrance direction.
What Fig. 2 represented is in the opening/closing mechanism of little torque adjusting valve, stop valve, and flap is in the state of unlatching.
The b place enlarged view of what Fig. 3 represented is Fig. 2 in the opening/closing mechanism of little torque adjusting valve, stop valve, in figure, c represents and to get on the bus the V-type groove cut out at valve body [1], and d represents the state interior hexagonal cone end Cock screw [15] being screwed out valve seat [14].
Claims (5)
1. a little torque adjusting valve, the opening/closing mechanism of stop valve, copper sheathing, valve seat, interior hexagonal cone end Cock screw, order is arranged on valve body, Stem Mut, valve rod, barrier film, packing ring, locknut is linked in sequence on flap, become a flap assembly, flap assembly and support, T-shaped key, seal ring, valve gap order loads valve body, be pressed on valve body with several hexagon socket cap head screw, it is characterized in that: on flap, design cylindrical tube, design relative to the fixing cylinder-shaped bracket of valve body below valve gap, on cylindrical shell and support, a barrier film is installed, the inner-diameter portion whose of barrier film is with on locknut hold-down barrel, outer radius portion respectively with valve body, support compresses, the cavity that formation one is airtight between valve gap and barrier film, in order to the pressure medium of isolated flap both sides, step is designed in support, barrier film is supported when flap closed condition.
2. the opening/closing mechanism of little torque adjusting valve according to claim 1, stop valve, it is characterized in that: flap is born high-pressure medium side and passage is designed in low-pressure medium side, high-pressure medium is made to enter above-mentioned cavity by passage, connecting vessels structure is become below, i.e. cavity and high-pressure medium side equipressure with cavity.
3. the opening/closing mechanism of little torque adjusting valve according to claim 1, stop valve, is characterized in that: valve rod is become non-tight structure with the driven Design of flap, namely the hole of flap upper valve rod nut is through hole.
4. the opening/closing mechanism of little torque adjusting valve according to claim 1, stop valve, it is characterized in that: design the fixed bearing that can coordinate with valve rod lower end periphery in valve body inlet, restriction valve rod is except axial displacement and all the other degrees of freedom except its axis rotates.
5. the opening/closing mechanism of little torque adjusting valve according to claim 1, stop valve, it is characterized in that: in the valve seat groove of valve body, design V-type groove, screw designed by valve seat wall, screws in valve seat when valve seat assembles, in the V-type groove of jacking valve body with several interior hexagonal cone end Cock screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520322195.1U CN204805573U (en) | 2015-05-20 | 2015-05-20 | Starting and stopping mechanism of little torque control valve, stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520322195.1U CN204805573U (en) | 2015-05-20 | 2015-05-20 | Starting and stopping mechanism of little torque control valve, stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204805573U true CN204805573U (en) | 2015-11-25 |
Family
ID=54590402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520322195.1U Expired - Fee Related CN204805573U (en) | 2015-05-20 | 2015-05-20 | Starting and stopping mechanism of little torque control valve, stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204805573U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104896114A (en) * | 2015-05-19 | 2015-09-09 | 河北金桥平衡阀门有限公司 | Opening and closing mechanism of small-torque regulation valve and cut-off valve |
| CN110274086A (en) * | 2019-06-28 | 2019-09-24 | 上海阀门五厂有限公司 | One kind is from release diaphragm assembly |
-
2015
- 2015-05-20 CN CN201520322195.1U patent/CN204805573U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104896114A (en) * | 2015-05-19 | 2015-09-09 | 河北金桥平衡阀门有限公司 | Opening and closing mechanism of small-torque regulation valve and cut-off valve |
| CN104896114B (en) * | 2015-05-19 | 2017-10-17 | 河北金桥平衡阀门有限公司 | A kind of small torque adjusting valve, the mechanism for opening/closing of stop valve |
| CN110274086A (en) * | 2019-06-28 | 2019-09-24 | 上海阀门五厂有限公司 | One kind is from release diaphragm assembly |
| CN110274086B (en) * | 2019-06-28 | 2024-05-10 | 上海阀门五厂有限公司 | Self-discharging pressure diaphragm assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151125 Termination date: 20190520 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |