CN101504088A

CN101504088A - Multifunctional general balance valve

Info

Publication number: CN101504088A
Application number: CNA200910007470XA
Authority: CN
Inventors: 白龙山
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-02-12
Filing date: 2009-02-12
Publication date: 2009-08-12
Anticipated expiration: 2029-02-12
Also published as: CN101504088B

Abstract

The invention discloses a multifunctional universal type balance valve, which belongs to the filed of invention and creation of universal cutoff valves and control regulating valves. The task of the multifunctional universal type balance valve aims to solving problems that in the prior traditional mechanical type cutoff valve and the regulating valve, a valve clack (a valve core) has large stress, the valve is time-consuming and laborious to open and close in the using process, and the aperture of the valve is also restricted by pressure difference and cannot be randomly changed, so the valve is not applied in middle- pressure and high-pressure occasions. The invention initially develops and applies a balanced pressure difference principle of a pilot valve and provides a combined balance valve clack (valve core); a medium is controlled by the pilot valve and acts on a piston to generate thrust; and the thrust and pressure acting on the valve clack (the valve core) are counteracted with each other to achieve balance. The multifunctional universal type balance valve has large aperture, high-pressure resistance, convenient operation, labor conservation and long service life, and the closing of the balance valve can reach the standard of zero leakage. The multifunctional universal type balance valve substantially improves the performances of the cutoff valve and the regulating valve and greatly widens the application range; and therefore, the multifunctional universal type balance valve is a perfect balance valve.

Description

Multifunctional general balance valve

Multifunctional general balance valve is to belong to universal cutoff valves and regulating and controlling valve, the innovation and creation of two big valve field aspects.Its task is at existing traditional mechanical formula stop valve and modulating valve, it is stressed big in use to exist flap (spool), valve opening, close time-consuming, the effort, also pressure difference restriction of valve aperture in addition, can not arbitrarily change bore, thus this valve middle and high have a meeting, an audience, etc. well under one's control to close can not get using.The present invention is development and Application pilot valve balance pressure reduction principle first, and a kind of " combined type balance flap (spool) " is provided, and medium is controlled by pilot valve, acts on the piston, produces thrust, and cancels each other with the pressure that flap (spool) is subjected to, and reaches balance.Thereby overcome above-mentioned shortcoming,, also widened Applicable scope simultaneously greatly from having improved the performance of stop valve and modulating valve in essence.

The present invention is provided with a piston cylinder below valve gap, between piston and flap (spool), also be provided with splice sleeve, guide's spool is located in the sleeve pipe, and by valve rod and the control of butterfly spring, makes combined type balance flap (spool) all be in state of equilibrium all the time in valve opening or pass closed procedure.Therefore not pressure difference restriction of the present invention, so the valve rod ouput force is little, it was both convenient, laborsaving again to operate.

The present invention is simple in structure, novel, and is high pressure resistant, rapid operation, and good seal performance, long service life is a kind of desirable model utility equilibrium valve.

Figure of description is a structure sectional view of the present invention.Among the figure: 1. butterfly spring; 2. cylinder window spool; 3. valve body; 4. valve seat; 5. piston; 6. pad; 7. double-screw bolt; 8. nut; 9. valve gap; 10. hold-down grid; 11. lower valve rod; 12. adjustable bolt; 13. priming cup; 14. support; 15. handwheel; 16. nut; 17. flat key; 18. upper valve rod; 19. Stem Mut; 20. connecting sleeve; 21. straight pin; 22. bolt; 23. open loop pad; 24. filler gland; 25. filler; 26. lining; 27. guide's spool; 28. splice sleeve; 29. plungers valve core; 30. locking nut.

Annotate: combined type balance flap (spool): by butterfly spring 1; Cylinder window spool 2; Piston 5; Guide's spool 27; Splice sleeve 28; Plungers valve core 29; Lock nut 30 is by screw thread or the welding of splice sleeve 28 It is combined into one, as shown in drawings.

The present invention by flat key 17 and lock nut 16, is connected into one with valve rod 18 on handwheel 15. Valve Stem nut 19 is screwed in support 14 upper ends, adapter sleeve 20 is arranged below it, by straight pin 21 and lower valve rod 11 Be connected into one. By bolt 22 and open loop pad 23 support 14 is fixed on the valve gap 9 in addition, forms one whole Body. When handwheel 15 rotated, upper valve rod 18 also rotated, and lower valve rod 11 is also thereupon mobile, drives combined type Balance flap (spool) is opened or is closed.

Below in conjunction with accompanying drawing embodiments of the invention are illustrated its working principle.

1. during valve opening:

Rotate counterclockwise handwheel 15, then upper valve rod 18 rotates synchronously, drives connecting sleeve 20; Straight pin 21 and lower valve rod 11 move down, this moment, straight pin 21 slided in support 14 vertical slots, and about do not turn round, when lower valve rod 11 moved down, guide's spool 27 at first began to open, medium flows to low pressure piston chamber, upper end by the endoporus of lower end high pressure by splice sleeve 28, along with the continuous inflow of medium, last downforce tends to balance, so handwheel 15 rotates, not pressure difference restriction, it is all very light to cause valve opening or closing operation.

2. during valve closing:

Clockwise rotate handwheel 15, lower valve rod 11 is mentioned guide's spool 27, simultaneously because the tension force effect of butterfly spring 1, make guide's spool 27 still be in opening state, like this combined type balance flap (spool) but non-resistance move up, and pressure differences not, so medium by top be back to gradually below, close when putting in place until combined type balance flap (spool), butterfly spring 1 is by the pulling of the valve rod of guide's spool 27 (trace pulling), make 1 compression of butterfly spring, guide's spool 27 is closed and is put in place, and this moment, medium was static mobile.

No matter the present invention is the valve aperture size, is opening or is closing in the closed procedure, and combined type balance flap (spool) always is in state of equilibrium, is not subjected to any pressure differential limits, so it was both high pressure resistant, again rapid operation.

Claims

1. a multifunctional general balance valve is mainly by butterfly spring (1); Cylinder window spool (2); Valve body (3); Valve seat (4); Piston (5); Pad (6); Double-screw bolt (7); Nut (8); Valve gap (9); Hold-down grid (10); Lower valve rod (11); Adjustable bolt (12); Priming cup (13); Support (14); Handwheel (15); Nut (16); Flat key (17); Upper valve rod (18); Stem Mut (19); Connecting sleeve (20); Straight pin (21); Bolt (22); Open loop pad (23); Filler gland (24); Filler (25); Lining (26); Guide's spool (27); Splice sleeve (28); Plungers valve core (29); Locking nut compositions such as (30), it is characterized in that: be provided with in the valve body (3) and be provided with valve rod lifting switching mechanism in combined type balance flap (spool) and the support (14), can realize that the present invention is high pressure resistant, rapid operation is closed zero leakage.

2. a kind of multifunctional general balance valve as claimed in claim 1 is characterized in that: by butterfly spring (1); Cylinder window spool (2); Piston (5); Guide's spool (27); Splice sleeve (28); Plungers valve core Compositional balance flaps (spool) such as (29) is realized this equilibrium valve not pressure difference and valve aperture restriction.

3. a kind of multifunctional general balance valve as claimed in claim 1, it is characterized in that: combined type balance flap (spool) is provided with the difform spool of two covers, one cover is a cylinder window spool (2), another set of is plungers valve core (29), its two covers spool can be realized four kinds of exemplary traffic characteristics respectively, be the linear flow flow characteristic, equal percentage (logarithm) Flow characteristics, quick open flow characteristic and parabolic flow character.

4. a kind of multifunctional general balance valve as claimed in claim 1, it is characterized in that: be provided with guide's spool (27) in splice sleeve (28) upper hole, its valve rod also passes through to arrive in the hole bottom in addition, and acts on butterfly spring (1), and control guide's spool (27) is opened or closed.

5. a kind of multifunctional general balance valve as claimed in claim 1, it is characterized in that: splice sleeve (28) center line is provided with through hole, top is gross porosity, middle part and bottom are pore, outer surface top is thick simultaneously, middle part and bottom rugosity are less than upper face, and outer surface of upper is provided with outside thread and piston (5) internal thread is bonded into one in addition.

6. a kind of multifunctional general balance valve as claimed in claim 1 is characterized in that: piston (5) center line is provided with through hole, and its bottom is provided with tapering valve seat and internal thread interface; Top is provided with boss, and also is provided with concave station and a plurality of uniform groove on boss.

7. a kind of multifunctional general balance valve as claimed in claim 1 is characterized in that: valve gap (9) below is provided with the piston bore with the itself one, and is provided with lining (26) in central hole, and it cooperates with lower valve rod (11), can guarantee the valve rod coaxality.

8. a kind of multifunctional general balance valve as claimed in claim 1, it is characterized in that: support (14) lower flange is provided with 2 adjustable bolts (12) and 4 lock bolts (22) of hold-down grid (10), and in the middle of 2 flanges of support (14) and valve gap (9), be provided with a divided ring pad (23) and supporting support (14).

9. a kind of multifunctional general balance valve as claimed in claim 1, it is characterized in that: support (14) hole internal upper part is provided with Stem Mut (19), below it, be provided with connecting sleeve (20), straight pin (21) and lower valve rod (11), straight pin (21) will separate valve rod up and down and link up, and constitute valve rod lifting switching mechanism.

10. a kind of multifunctional general balance valve as claimed in claim 1, it is characterized in that: inwall bottom, support (14) hole is provided with 2 vertical grooves, and cooperate with straight pin (21), it is slided up and down, and about do not turn round, this support arm (14) also is provided with 2 separable valve rods (11), (18) in the hole, and promptly lower valve rod (11) can only move up and down, upper valve rod (18) can about the revolution.