CN102691799B - There is the fluid conditioner of lever box - Google Patents
There is the fluid conditioner of lever box Download PDFInfo
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- CN102691799B CN102691799B CN201110085173.4A CN201110085173A CN102691799B CN 102691799 B CN102691799 B CN 102691799B CN 201110085173 A CN201110085173 A CN 201110085173A CN 102691799 B CN102691799 B CN 102691799B
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- 239000012530 fluid Substances 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 claims description 12
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 230000003068 static effect Effects 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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Abstract
The present invention relates to the fluid conditioner with lever box. This fluid conditioner includes controlling element, and it is arranged in valve body and valve port is moveable relatively, in order to control flowing. The valve rod slided engages this control element and this control element mobile, and this valve rod includes top, bottom and middle part. This device also includes the lever box being arranged in this valve body, valve acutator is operationally coupled to this valve rod and includes first and second and pivot lever by this lever box, each lever that pivots has the first and second ends and middle part, engages this valve rod in the middle part of this of this first lever. This first lever engage this second lever this in the middle part of, and this second lever is operatively coupled to the part of this valve acutator, so that the movement of this valve acutator is responded by this first and second lever and this valve rod, in order to thus to move this control element between open and closed positions.
Description
Technical field
The present invention relates generally to fluid conditioner, more particularly, to by lever assembly, valve acutator being coupled to the fluid conditioner controlling element.
Background technology
Actuator is usually used in fluid or gas distributing system, in order to control the pressure in the system in actuator downstream. It is known that the pressure supplying gas in common gas distributing system can change according to the requirement of system, weather, source of supply and/or other factors. But, great majority are equipped with such as, and the such as end-user facilities of the gas device such as boiler, oven needs gas according to predetermined pressure intensity parameter conveying. Therefore, those distribution systems use actuator, in order to guarantee that the gas carried meets the demand of end-user facilities.
In fluid or gas regulator (general name " fluid conditioner "), the consideration of many design and performances can be important. Such as, the designer of fluid conditioner is likely to the actuator of making great efforts to design the sensitivity for inlet pressure change with higher pressure stability and minimizing. Additionally, designer is likely to effort to construct greater compactness of design, and design the actuator being easily assembled to and servicing.
Summary of the invention
According to an aspect of the present invention, fluid conditioner includes valve body, and it has entrance, outlet and valve port; Including controlling element, it is shiftably disposed in described valve body, and described control element is adapted to be the displacement of relatively described valve port, in order to control the flowing of the fluid between described entrance and described outlet; Including valve rod, it is coupled to described control element and is slidably mounted within described valve body, and described valve rod is arranged between closed position and open position to move described control element, and described valve rod includes top, bottom and middle part; And include valve acutator. Described device also includes lever box, and it is arranged in described valve body, and described valve acutator is operationally coupled to described valve rod by described lever box, and described lever box includes the first lever and the second lever; Each the first end, the second end and middle part of including in wherein said first and second levers, each first end is pivotally mounted to described lever box; And the described middle part of described first lever engages the described top of described valve rod. Described second termination of described first lever closes the described middle part of described second lever, and described second end of described second lever is operatively coupled to the part of described valve acutator, so that the movement of described valve acutator is responded by described first and second levers and described valve rod, in order to thus to open mobile described control element between closed position described.
According to one or more preferred modes, described lever box can include threaded mounting portion, the threaded vestibule being suitably sized to engage in described valve body of this part. Additionally, the described middle part of described first lever includes bearing-surface and bearing-surface described in the described upper support of described valve rod. The top of described valve rod can include roller bearing, its described bearing-surface being placed to support described first lever.
Spring may be used for being coupled to valve rod lever, and can be arranged to bias the described top of described valve rod towards the described bearing-surface of described first lever. Preferably, described first lever is in response to described control element moving and pivot the first angle between described open position and described closed position, and described second lever is in response to described control element moving and pivot the second angle between described open position and described closed position, and described second angle is more than described first angle. The part of the valve acutator contacted by lever assembly can be have the valve plug of bearing-surface.
First spring can be placed in order to by described control element towards described closed position, and the second spring can be placed in order to by described valve rod towards described first lever biasing. Shell can be removably mountable to described valve body and described shell can include vestibule, and described first spring and described second spring can include the helical spring that is concentrically placed in the described vestibule of described shell.
According on the other hand, fluid regulation apparatus can include valve body, and this valve body has entrance, outlet and valve port; Including controlling element, it is shiftably disposed in described valve body, and described control element is adapted to the displacement of relatively described valve port, in order to control the flowing of the fluid between described entrance and described outlet; Including valve rod, it is coupled to described control element and is movably mounted in described valve body, and described valve rod is arranged between closed position and open position to move described control element, and described valve rod includes top, bottom and middle part; Including valve acutator; Including the first lever and the second lever, it is pivotally mounted in described valve body and is arranged to and operationally described valve acutator is coupled to described valve rod, each the first end, the second end and middle part of including in described first and second levers, each first end can around fixing pivot. The described middle part of described first lever and the described top of described valve rod are operatively engaged mutually at first make contact, and described second end of described first lever is operatively engaged the described middle part of described second lever at the second contact point. Described second end of described second lever is operatively engaged described valve acutator at the 3rd contact point, so that the movement of described valve acutator is responded by described first and second levers and described valve rod, in order to thus to open mobile described control element between closed position described.
According to additional preferred mode, described first make contact includes the bearing-surface carried by the described middle part of described first lever, and the described top of described valve rod includes bearing, its described middle part being arranged for supporting described first lever. Described first make contact moves along described first lever in response to the rotation of described first lever. Described second contact point place can include the bearing-surface carried by the described middle part of described second lever, and including the curved end by the described second end carrying of described first lever, and described second contact point can move along described second lever in response to the rotation of described first and second levers. Bearing-surface that described 3rd contact point includes being coupled to described valve acutator and by the curved end of the described second end carrying of described second lever, and described 3rd contact position moves in response to the described bearing-surface along described valve acutator that rotates of described second lever.
Spring can be coupled to described valve rod and be arranged to bias the described top of described valve rod towards the described bearing-surface of described first lever. Described first lever can in response to described control element moving and pivot the first angle between described open position and described closed position, and described second lever can in response to described control element moving and pivot the second angle between described open position and described closed position, and described second angle is more than described first angle. First spring can be placed in order to by described control element towards described closed position, second spring can be placed in order to by described valve rod towards described first lever biasing, and described first spring and described second spring can include the helical spring that is concentrically disposed in described valve body.
According to another additional aspect, including providing valve body for valve acutator is coupled to the method controlling element in fluid conditioner, it has entrance, outlet and valve port; Controlling element including providing, it is shiftably disposed in described valve body, in order to described control element can shift by relatively described valve port between an open position and a closed, in order to control the flowing of the fluid between described entrance and described outlet; Including providing valve rod, it is movably mounted in described valve body; Including described valve rod being coupled to described control element, in order to the movement of described valve rod makes described control element move between described closed position and described open position; Including providing the first lever and the second lever, it is pivotally mounted in described valve body in order to operationally described valve rod is coupled to described valve acutator, each the first end, the second end and middle part of including in wherein said first and second levers, and wherein each first end around fixing pivot. Described valve body disposes described first and second levers, so that the described top of the described middle part of described first lever and described valve rod is operatively engaged mutually at first make contact, and so that described second end of described first lever is operatively engaged the described middle part of described second lever at the second contact point. Dispose described lever further, so that described second end of described second lever engages described valve acutator at the 3rd contact point, so that the movement of described valve acutator is responded by described first and second levers and described valve rod, in order to thus to open mobile described control element between closed position described.
According to additional preferred mode, described method includes described first and second levers are mounted to threaded box, it is provided that the threaded vestibule in described valve body, and described box is threadedly mounted to described threaded vestibule. additionally, described method can include providing spring, it is placed in order to be biased towards the described bearing-surface of described first lever on the described top of described valve rod, can include described first and second levers are mounted to pivoting point, so that described first lever is in response to described control element moving and pivot the first angle between described open position and described closed position, so that described second lever is in response to described control element moving and pivot the second angle between described open position and described closed position, described second angle is more than described first angle, and can include providing the first spring, its be placed in order to by described control element towards described closed position, and including the second spring, it is placed in order to be biased towards described first lever by described valve rod, and described method includes being concentrically disposed in described valve body described first spring and described second spring.
Accompanying drawing explanation
The sectional view of fluid regulation apparatus that Fig. 1 is the instruction assembling of the open example of first according to the present invention, that include lever box, this control device of this fluid regulation apparatus is illustrated in open position;
Fig. 2 is analogous to Fig. 1 but shows another sectional view of this control device in closed position;
Partial front elevation view that Fig. 3 shows the situation of lever box, that amplify, and also include valve rod and the connection to valve acutator.
Fig. 4 shows the part of lever box and is broken away fragmentary, perspective view that appear the situation on the top of lever and valve rod, that amplify.
Fragmentary, perspective view that Fig. 5 shows the additional situation on the top of lever and valve rod, that amplify.
Fig. 6 shows the bottom of valve rod and for partial sectional view that bias the part of the concentric spring pair of valve rod and control element independently, that amplify.
Fig. 7 shows lever, valve rod and mode, the amplification Local map that can be upwardly biased by valve rod by the spring being arranged in valve body or in removable shell, and wherein part is section view.
Detailed description of the invention
Referring now to accompanying drawing, the fluid regulation apparatus that Fig. 1 and Fig. 2 illustrates the instruction of the open example of first according to the present invention and assembles, and this device represented by accompanying drawing labelling 10. Fluid regulation apparatus 10 includes valve body 12, and it includes valve inlet 14, valve outlet port 16 and valve port 18. Control element 20 and be shiftably disposed in valve body 12, in order to controlling element 20 can shift by valve port 18 relatively, in order to control in entrance 14 and the flowing of fluid that exports between 16. Valve port 18 generally includes valve seat 19. It will be understood to those skilled in the art that and can control the control of the fluid via fluid regulation apparatus by the element 20 that controls mobile between open position as shown in Figure 1 and closed position as shown in Figure 2. At open position, control element 20 and lift off a seat 19, in closed position, control element 20 and be positioned on valve seat 19.
Fluid regulation apparatus 50 includes valve rod 22, and it is connected to control element 20, and this valve rod has top 24, bottom 26 and middle part 28. In the example shown, middle part 28 is connected to control element 20, in order to when valve rod 22 moves up and down, and controls element 20 and moves up and down. More specifically, the middle part 28 of valve rod 22 includes platform valency or the first widened section 30, it is sized to and is arranged to supporting control the corresponding top 32 of element 20, in order to when valve rod 22 moves down, control element 20 is pushed down on by the first widened section 30. When valve rod 22 moves up, the power of spring 95 (illustrate in figs. 6 and 7 and be further described below) is enough to move up control element 20. Widened section 30 can be placed, for allowing to move at valve rod 22 and the independent relative sliding controlled between element 20. Therefore, control element 20 is moved down by middle part 28 and moving down of widened section 30, and control element 20 is moved up by spring 95. For other structures that valve rod 22 and control element 20 are installed mutually can be proved to be suitable. Preferably, clearance space S (Fig. 6), the such as clearance space of annular, it is provided between interior bore and the outer surface of valve rod 22 controlling element 20, in order to the pressure in vestibule 92 under controlling element 20 is identical with the pressure (back pressure) in the chamber A on valve seat 19. Preferably, it is provided that O C (Fig. 1,2 and 6) in vestibule 92, around the part controlling element 20, in order to chamber B and inlet pressure isolation.
Fluid regulation apparatus 10 also includes valve acutator 38, the valve acutator of the pneumatic diaphragm type of its type commonly used in the prior art in the example illustrated. Other valve acutator can be proved to be suitable. Lever box 40 is installed in valve body 12, in order to valve acutator 38 is operationally coupled to valve rod 22, and lever box 40 includes the first lever 42 and the second lever 44. First lever 42 includes the first end the 46, second end 48 and middle part 50. Similarly, the second lever 44 includes the first end the 52, second end 54 and middle part 56. First end 46 of the first lever 42 is mounted to pivot 58, and the first end 52 of the second lever 44 is mounted to pivot 60. In the example shown, lever box 40 supporting pivot 58 and 60, and pivot 58 and 60 is independent mutually. Alternatively, the part that lever 42 and 44 can be pivotally mounted to valve body 12. Preferably, the second end 48 of lever 42 has the profile 55 of circle, and the second end 54 of lever 44 has the profile 57 of circle. At Fig. 4, the profile 55 and 57 that circle can be checked in 6 and 7 best.
When being disposed as illustrated in fig. 1 and 2, the top 24 of valve rod 22 engages with the middle part 50 of the first lever 42 or otherwise contacts. Similarly, when being disposed as illustrated in fig. 1 and 2, the second end 48 of the first lever 42 engages with the middle part 56 of the second lever 44 or otherwise contacts. Second end 54 of the second lever 44 engages or supports the surface 62 down of valve acutator 38. Therefore, when valve acutator moves up and down, the first and second levers 42 and 44 rotate around its respective pivot 58 and 60, in order to valve rod 22 moves up and down, thus causing above-mentioned, to control element 22 between an open position and a closed corresponding movement.
When checking Fig. 1 and 2, it is thus evident that the first lever 42 turns over the first angle in a counterclockwise direction around pivot 58, this angle is the difference between the position of the first lever 42 shown in the position of the first lever 42 shown in Fig. 1 and Fig. 2. On the other hand, it is thus evident that the second lever 44 turns over the second angle in a clockwise direction around pivot 60, this angle is also the difference between the position of the second lever 44 shown in the position of the second lever 44 shown in Fig. 1 and Fig. 2. When the position of the lever 42 and 44 checked in Fig. 1 and Fig. 2, it is thus evident that the second angle is more than the first angle.
Fig. 3 and 4 illustrate in greater detail lever box 40. Lever box 40 includes main body 64 generally cylindrical in shape, and it has the upper flange part 66 and threaded mounting portion 68 widened. Valve body 12 includes threaded vestibule 70 (as shown in Figure 3), and lever box 40 can be mounted to valve body 12 by threaded mounting portion 68 is screwed into threaded vestibule 70. Upper flange part 66 supporting pivot 58 and 60, and upper flange part 66 includes limit groove 72 in the central indentation 74 connected with lower vestibule 76, that be suitable for, so that the first and second levers 42 and 44 have the space rotated around its respective pivot 58 and 60, and so that valve rod 22 can move back and forth up and down as shown in Figures 3 and 4 on generally vertical direction. Can recognize from Fig. 3, it is preferable that lever box 40 is mounted to valve body 12 in the way of substantially concentric with valve seat 19, in order to the axle X of valve rod 22 and the central shaft of valve seat 19 extend concentrically about.
With reference now to Figure 4 and 5, the downside of the first lever 42 forms bearing-surface 78, and the downside of the second lever 44 forms bearing-surface 80. Advantageously, as it is shown in figure 5, the top 24 of valve rod 22 supports the bearing-surface 78 of the first lever 42, and the second end 48 of the first lever 42 supports the bearing-surface 80 of the second lever 44. Preferably, the top 24 of valve rod 22 includes bearing 82, and it is rolling bearing in open example. Therefore, when the first lever 42 rotates, the first make contact 84 between top 24 and the bearing-surface 78 of the first lever 42 of valve rod 22 is not static, but alternatively moves along the bearing-surface 78 of the first lever 42. Similarly, when the second lever 44 rotates, the second contact point 86 between the second end 48 and the bearing-surface 80 of the second lever 44 of the first lever 42 is not static, but moves along the bearing-surface 80 of the second lever 44. Finally, can appreciate that when checking Fig. 1 and 2 in conjunction with Fig. 3-5, when the second lever 44 rotates, the 3rd contact point 88 (visible in fig. 1-3) is defined as the place that the second end 54 of the second lever 44 contacts to the corresponding bearing-surface 62 carried by valve acutator 38 or otherwise engages. Equally, when the second lever 44 moves, the 3rd contact position is not static, but moves along bearing-surface 62. In the example shown, bearing-surface 62 is formed by the lower surface of the valve plug 91 in the shell being installed in valve acutator 38, thus moving up and down together with diaphragm plate in company with the barrier film of valve acutator 38.
With reference now to Fig. 6, the bottom 26 of valve rod 22 is illustrated to extend to the vestibule 92 formed in valve body 12. The layout of the bottom 26 of contiguous valve rod 22 can also be seen in the figure 7. Preferably, vestibule 92 is formed in shell 93, and as illustrated in fig. 1 and 2, shell 93 can be removably secured in valve body 12. The bottom 26 of valve rod 22 includes flange 94, and it can be formed in valve rod or it can be the retaining ring separated, and spring 95 is positioned in vestibule 92, in order to valve rod 22 is applied bias force upwards. Control element 20 and include lower surface 96, and control element 20 is applied bias force upwards by another spring 97 being similarly disposed in vestibule 92, in order to control element 20 is promoted to valve seat 19 and finally pushes it to closed position. The top 24 of valve rod 22 is also promoted by spring 95 to lever 24, in order to maintain contacting between bearing 82 and the bearing-surface 78 of the first lever 42. Visible spring 95 in figs. 6 and 7, but it is inconspicuous in fig 1 and 2. Actuator can be provided to regulate the spring force for controlling element 20 of spring 97.
In the example shown, spring 95 and 97 is oriented substantially coaxial mutually, and coaxial relative to the axle X of valve rod 22. Moreover it is preferred that spring 95 and 97 operates independently of each other. Spring 95 maintains the joint between top 24 and the bearing-surface 78 of the first lever 42 of valve rod 22 by valve rod 22 applies the first bias force, and control element 20 is biased towards valve seat by spring 97 by control element 20 is applied the second bias force. Preferably, the first and second bias forces are different.
According to alternative form, lever 42 and 44 can be mounted directly to the inside of valve body 12, without using the above-mentioned type, separate, threaded lever box 40.
One side according to open example, the double lever assembly structure in valve acutator 38 can provide greater compactness of size. Additionally, by using the lever ratio provided by lever, disclosed design can provide better pressure stability with the sensitivity for inlet pressure change reduced, and is prone to suppress unstable condition. Additionally, the double lever structure of open example provides favourable, high lever ratio.
Be described herein as the preferred embodiment of the present invention, including known for inventor, for performing the one or more patterns present invention, best. Although being shown here at and describe many examples, but as it will be easily appreciated by one skilled in the art that the details not mutual exclusion of various embodiment. On the contrary, once those skilled in the art has read the instruction at this, it should be able to by one or more features combination of one or more features of an embodiment with remaining embodiment. Moreover, it should be understood that shown embodiment is only used as example, restriction the scope of the present invention should do not it can be used as. Unless otherwise it is hereby stated that or unless contradiction significantly in content, it is possible to be implemented in all methods described herein in any suitable order. This offer any one and all examples or the use of exemplary language (such as, " such as "), be merely intended to be better described the content of the example embodiment of the present invention, the scope of the present invention do not produced restriction. Any language of description all should be not necessarily to be construed as and any element not writing claim is designated as the fundamental realizing the present invention.
Claims (21)
1. fluid regulation apparatus, including:
Valve body, it has entrance, outlet and valve port;
Controlling element, it is shiftably disposed in described valve body, and described control element is adapted to the displacement of relatively described valve port, in order to control the flowing of the fluid between described entrance and described outlet;
Valve rod, it is coupled to described control element and is slidably mounted within described valve body, and described valve rod is arranged between closed position and open position to move described control element, and described valve rod includes top, bottom and middle part;
Valve acutator;
Lever box, it is arranged in described valve body, and described valve acutator is operationally coupled to described valve rod by described lever box, and described lever box includes the first lever and the second lever;
Each the first end, the second end and middle part of including in described first and second levers, each first end is pivotally mounted to described lever box;
The described middle part of described first lever engages the described top of described valve rod;
Described second termination of described first lever closes the described middle part of described second lever; And
Described second end of described second lever is operatively coupled to the part of described valve acutator, so that the movement of described valve acutator is responded by described first and second levers and described valve rod, in order to thus to open mobile described control element between closed position described.
2. fluid regulation apparatus according to claim 1, wherein said lever box includes threaded mounting portion, the threaded vestibule being suitably sized to engage in described valve body of this part.
3. the fluid regulation apparatus according to any one of claim 1 or 2, the described middle part of wherein said first lever includes bearing-surface and bearing-surface described in the described upper support of wherein said valve rod.
4. fluid regulation apparatus according to claim 3, the top of wherein said valve rod includes roller bearing, its described bearing-surface being placed to support described first lever.
5. fluid regulation apparatus according to claim 3, including spring, it is coupled to described valve rod and is arranged to bias the described top of described valve rod towards the described bearing-surface of described first lever.
6. fluid regulation apparatus according to claim 1 and 2, wherein said first lever is in response to described control element moving and pivot the first angle between described open position and described closed position, and wherein said second lever is in response to described control element moving and pivot the second angle between described open position and described closed position, and described second angle is more than described first angle.
7. fluid regulation apparatus according to claim 1 and 2, the described part of wherein said valve acutator includes the valve plug with bearing-surface.
8. fluid regulation apparatus according to claim 1 and 2, including the first spring, its be placed in order to by described control element towards described closed position, and include the second spring, its be placed in order to by described valve rod towards described first lever biasing.
9. fluid regulation apparatus according to claim 8, include vestibule including the shell and described shell that are mounted to described valve body, and wherein said first spring and described second spring include the helical spring that is concentrically disposed in the described vestibule of described shell.
10. fluid regulation apparatus, including:
Valve body, it has entrance, outlet and valve port;
Controlling element, it is shiftably disposed in described valve body, and described control element is adapted to the displacement of relatively described valve port, in order to control the flowing of the fluid between described entrance and described outlet;
Valve rod, it is coupled to described control element and is movably mounted in described valve body, and described valve rod is arranged between closed position and open position to move described control element, and described valve rod includes top, bottom and middle part;
Valve acutator;
First lever and the second lever, it is pivotally mounted in described valve body and is arranged to and operationally described valve acutator is coupled to described valve rod;
Each the first end, the second end and middle part of including in described first and second levers, each first end can around fixing pivot;
The described middle part of described first lever and the described top of described valve rod are operatively engaged mutually at first make contact;
Described second end of described first lever is operatively engaged the described middle part of described second lever at the second contact point; And
Described second end of described second lever is operatively engaged described valve acutator at the 3rd contact point, so that the movement of described valve acutator is responded by described first and second levers and described valve rod, in order to thus to open mobile described control element between closed position described.
11. fluid regulation apparatus according to claim 10, wherein said first make contact includes the bearing-surface carried by the described middle part of described first lever, and the described top of wherein said valve rod includes bearing, its described middle part being arranged for supporting described first lever, and wherein said first make contact moves along described first lever in response to the rotation of described first lever.
12. the fluid regulation apparatus according to any one of claim 10 to 11, wherein said second contact point includes the bearing-surface carried by the described middle part of described second lever, and including the curved end by the described second end carrying of described first lever, and wherein said second contact point moves along described second lever in response to the rotation of described first and second levers.
13. the fluid regulation apparatus according to claim 10 or 11, bearing-surface that wherein said 3rd contact point includes being coupled to described valve acutator and by the curved end of the described second end carrying of described second lever, and wherein said 3rd contact point moves in response to the described bearing-surface along described valve acutator that rotates of described second lever.
14. fluid regulation apparatus according to claim 11, including spring, it is coupled to described valve rod and is arranged to bias the described top of described valve rod towards the described bearing-surface of described first lever.
15. the fluid regulation apparatus according to claim 10 or 11, wherein said first lever pivots the first angle in response to the movement between described open position and described closed position of the described control element, and wherein said second lever pivots the second angle in response to the movement between described open position and described closed position of the described control element, and described second angle is more than described first angle.
16. the fluid regulation apparatus according to claim 10 or 11, including the first spring, its be placed in order to by described control element towards described closed position, and including the second spring, its be placed in order to by described valve rod towards described first lever biasing, and wherein said first spring and described second spring include the helical spring that is concentrically disposed in described valve body.
17. for valve acutator is coupled to the method controlling element in fluid conditioner, described method includes:
Thering is provided valve body, it has entrance, outlet and valve port;
Thering is provided and control element, it is shiftably disposed in described valve body, in order to described control element can shift by relatively described valve port between an open position and a closed, in order to control the flowing of the fluid between described entrance and described outlet;
Thering is provided valve rod, it is movably mounted in described valve body;
Described valve rod is coupled to described control element, in order to the movement of described valve rod makes described control element move between described closed position and described open position;
First lever and the second lever are provided, it is pivotally mounted in described valve body in order to operationally described valve rod is coupled to described valve acutator, each the first end, the second end and middle part of including in wherein said first and second levers, and each first end is around fixing pivot;
Described valve body disposes described first and second levers, so that the top of the described middle part of described first lever and described valve rod is operatively engaged mutually at first make contact, and so that described second end of described first lever is operatively engaged the described middle part of described second lever at the second contact point; And
Dispose described second end of described second lever, in order to engage described valve acutator at the 3rd contact point, so that the movement of described valve acutator is responded by described first and second levers and described valve rod, in order to thus to open mobile described control element between closed position described.
18. method according to claim 17, it is mounted to threaded box including by described first and second levers, it is provided that the threaded vestibule in described valve body, and described box is threadedly mounted to described threaded vestibule.
19. the method according to any one of claim 17 to 18, including providing spring, it is placed in order to be biased towards the bearing-surface of described first lever on the described top of described valve rod.
20. the method according to claim 17 or 18, it is mounted to pivoting point including by described first and second levers, so that described first lever is in response to described control element moving and pivot the first angle between described open position and described closed position, and so that described second lever is in response to described control element moving and pivot the second angle between described open position and described closed position, described second angle is more than described first angle.
21. the method according to claim 17 or 18, including providing the first spring, its be placed in order to by described control element towards described closed position, and including the second spring, it is placed in order to be biased towards described first lever by described valve rod, and described method includes being concentrically disposed in described valve body described first spring and described second spring.
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CN201110085173.4A CN102691799B (en) | 2011-03-24 | 2011-03-24 | There is the fluid conditioner of lever box |
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CN2689008Y (en) * | 2004-04-07 | 2005-03-30 | 毛晓敏 | Pressure reducing valve with controllable valve |
CN201013988Y (en) * | 2007-02-07 | 2008-01-30 | 江苏江淮动力股份有限公司 | Pressure reducing valve |
CN101657772A (en) * | 2007-04-20 | 2010-02-24 | 费希尔控制产品国际有限公司 | Secondary seat for gas regulator |
CN201547353U (en) * | 2009-11-20 | 2010-08-11 | 刘波 | Gas safety self-closing valve |
CN201636404U (en) * | 2010-03-11 | 2010-11-17 | 河北安信燃气设备有限公司 | Gas pressure regulator for medium pressure gas distribution |
CN202228689U (en) * | 2011-03-24 | 2012-05-23 | 费希尔调压器(上海)有限公司 | Fluid adjusting device |
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JP2007078240A (en) * | 2005-09-14 | 2007-03-29 | Seiko Instruments Inc | Valve opening/closing mechanism |
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US4176677A (en) * | 1977-12-09 | 1979-12-04 | Textron Inc. | Relay pilot regulator |
CN2689008Y (en) * | 2004-04-07 | 2005-03-30 | 毛晓敏 | Pressure reducing valve with controllable valve |
CN201013988Y (en) * | 2007-02-07 | 2008-01-30 | 江苏江淮动力股份有限公司 | Pressure reducing valve |
CN101657772A (en) * | 2007-04-20 | 2010-02-24 | 费希尔控制产品国际有限公司 | Secondary seat for gas regulator |
CN201547353U (en) * | 2009-11-20 | 2010-08-11 | 刘波 | Gas safety self-closing valve |
CN201636404U (en) * | 2010-03-11 | 2010-11-17 | 河北安信燃气设备有限公司 | Gas pressure regulator for medium pressure gas distribution |
CN202228689U (en) * | 2011-03-24 | 2012-05-23 | 费希尔调压器(上海)有限公司 | Fluid adjusting device |
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