CN203857092U - Slide-structured micro-resistance check valve - Google Patents
Slide-structured micro-resistance check valve Download PDFInfo
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- CN203857092U CN203857092U CN201420280758.0U CN201420280758U CN203857092U CN 203857092 U CN203857092 U CN 203857092U CN 201420280758 U CN201420280758 U CN 201420280758U CN 203857092 U CN203857092 U CN 203857092U
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Abstract
A slide-structured micro-resistance check valve comprises a valve plate and a valve plate counterweight balancer; the valve plate with which a valve plate inlet seal ring can be sealed and which can rotate in a valve body to open or close is connectedly mounted inside the valve body through a valve plate rotating shaft and a valve plate connection block; the valve plate counterweight balancer is connected with one side, far away from the valve plate, of the valve plate connection block; the valve plate rotating shaft is disposed at the center of the valve plate connection block between the valve plate counterweight balancer and the valve plate. The slide-structured micro-resistance check valve is characterized in that the valve body is horizontally mounted and the valve plate counterweight balancer is composed of an arc slide and a weight.
Description
Technical field
The present invention relates to the micro-resistance safety check of slideway structure, be applicable to all liq and gas medium, belong to synthetic energy-saving discharge-reducing technical field and safety check technical field.
Background technique
Safety check is in many pipe conveying procedures, for preventing from carrying the conventional valve of liquid or gas backflow, but the safety check on market is all after backing down by liquid or gas pressure now, need the surge pressure of working fluid or gas to keep opening of check valve plate always, this has just consumed suitable energy and pressure drop, although the safety check valve plate having is now very thin, very light, when liquid or gas are flowed through in valve, pressure drop is less, power consumption is lower, but this safety check is because valve plate is too thin, too light, in the time there is no import liquid or gas pressure, the sealing of valve plate is poor, the effect that does not have non-return having, on market, only have now uncle minister in ancient times's Wei patent of invention " 201210054615.3 energy-saving micro-resistance adjustable self-balancing check valve " and " 201120251731.5 safety check " after valve plate, no longer to consume pressure drop and keep valve plate unlatching opening, but these safety check also have a shortcoming, that is exactly after the valve plate of safety check will almost be opened completely, could realize non-resistance or micro-resistance, that is to say when safety check does not reach full production in production is used, the micro-resistance safety check of this class just cannot be realized the function of micro-resistance, three kinds of structures of five kinds of structures of the present invention and Wei Baiqing " the permanent micro-resistance safety check of 201410044392.1 self-regualting types " have overcome this shortcoming, any aperture or the state opened at safety check, all only has small valve plate resistance or valveless plate resistance power.
Summary of the invention
The object of this invention is to provide five kinds of can have discharge pressure and open valve plate to no longer consuming after any opening state that pressure drop keeps this valve plate opening state and can automatically close in time the micro-resistance safety check of slideway structure that valve plate stops liquid or gas backstreaming in the time that the suction flange of safety check not having discharge pressure at the suction flange of safety check for liquid or gas communication.
The micro-resistance safety check of slideway structure, comprise by a valve plate rotating shaft and valve plate contiguous block and be mounted on can and rotarily open and the valve plate of closing and the valve plate counterweight balancing device being connected away from valve plate one side with valve plate contiguous block with the sealing of valve plate inlet seal circle in valve body in valve body, the valve plate contiguous block central authorities between valve plate counterweight balancing device and valve plate are valve plate rotating shaft; It is characterized in that:
1, its valve plate counterweight balancing device of safety check that level is installed has five kinds of structures: to be asymmetric sector structure, valve plate counterweight balancing device form by main equilibrium block and secondary equilibrium block the cross section that structure, valve plate counterweight balancing device form structure, its vertical valve plate face of valve plate counterweight balancing device by a cambered way and a gravity block in the cross section of its vertical valve plate face of valve plate counterweight balancing device is that arcuate structure, valve plate counterweight balancing device form structure by stable equilibrium piece and mobile balanced block; Its valve plate counterweight balancing device structure of vertically arranged safety check is identical with its valve plate counterweight balancing device structure of safety check that level is installed, but the balance weight difference of valve plate counterweight balancing device.
Five kinds of structures of its valve plate counterweight balancing device of safety check that 2, level is installed:
(1) the valve plate counterweight balancing device that the cross section of its vertical valve plate face of valve plate counterweight balancing device is asymmetric sector structure, the cross section that comprises a vertical valve plate face is asymmetric fan-shaped equilibrium block, equilibrium block is arranged on valve plate contiguous block away from valve plate one end, equilibrium block is towards the side of valve import one side and the angle α of valve plate plane composition, than equilibrium block towards the angle β of the side of valve outlet port one side and valve plate plane composition little 3 ° ~ 15 °, and 0 °≤α≤20 °, 3 °≤β≤35 °, making valve plate is that valve plate is during with valve plate inlet seal circle phase sealing state in plumbness, the fan section of valve plate counterweight balancing device is greater than to the gravity of valve import one side to the gravity of valve outlet port one side, thereby make valve plate counterweight balancing device can have a power that valve plate is pressed to valve plate inlet seal circle, and form certain sealing, also have in addition two kinds of other structures, the one, α=0 °, β=0 °, but the center of gravity of this valve plate counterweight balancing device is at valve plate plane deflection valve outlet port one side 2mm ~ 100mm, the 2nd, valve plate counterweight balancing device compares the sector structure large away from valve plate contiguous block one end near valve plate contiguous block one end, and the center of gravity that meets equally valve plate counterweight balancing device is at valve plate plane deflection valve outlet port one side 2mm ~ 100mm, in the time that valve plate is backed down certain angle by the atmospheric pressure of valve import or hydraulic coupling, valve plate and A structure valve plate counterweight balancing device form leverage, but this leverage does not reach balance, but still have the leverage power that can make valve plate be returned to closed condition, because the leverage power of this return action is less than the leverage power with respect to valve plate rotating shaft that in valve plate opening process, valve plate produces, therefore, this safety check is very energy-conservation, the check valve body structural modification of valve plate counterweight balancing device is little, only have the space of valve plate upside is strengthened, thereby make valve plate counterweight balancing device have can be with the opening and closing of valve plate the space around 0 ° ~ 90 ° of valve plate rotating shaft rotations, simultaneously the upper flange of safety check also have 30mm ~ 200 mm on move, spacing and the alignment thereof of suction flange and outlet(discharge) flange are constant.
(2) valve plate counterweight balancing device is made up of the valve plate counterweight balancing device of structure main equilibrium block and secondary equilibrium block, comprise a main equilibrium block and a secondary equilibrium block composition valve plate counterweight balancing device, main equilibrium block and secondary equilibrium block are with being arranged on valve plate contiguous block away from valve plate one end, main equilibrium block is arranged on towards valve import one side, secondary equilibrium block is arranged on towards valve outlet port one side, main equilibrium block is fixedly connected with valve plate contiguous block, secondary equilibrium block is connected with valve plate contiguous block by a secondary equilibrium block rotating shaft, secondary equilibrium block can do a low-angle rotation around secondary equilibrium block rotating shaft, 2 °≤≤ 15 °, turn clockwise the angle of from being fitted in the position of main equilibrium block, being installed in valve plate contiguous block blocks and stops near the secondary equilibrium block baffle plate of valve outlet port side, when valve plate is that valve plate is during in closed condition in plumbness, main equilibrium block and secondary equilibrium block, the positive upside and the secondary equilibrium block that are positioned at valve plate abut in secondary equilibrium block baffle position near secondary equilibrium block rotating shaft position, and now secondary equilibrium block separates a maximum angle with main equilibrium block: 2 ° ~ 15 °, in the time that valve plate is opened, along with valve plate is rotated counterclockwise the increase of angle around valve plate rotating shaft, along with valve plate is in the time that valve plate rotating shaft is rotated, main equilibrium block and secondary equilibrium block do and being rotated counterclockwise of valve plate same angular velocity around valve plate rotating shaft, and when valve plate is in the time that valve plate rotating shaft is rotated counterclockwise angle and reaches the maximum angle that secondary equilibrium block separates with main equilibrium block, be that the focus point of secondary equilibrium block is while crossing the vertical line of valve plate spindle central point, secondary equilibrium block is under Action of Gravity Field, be rotated counterclockwise fast the position overlapping with main equilibrium block, and then do being rotated counterclockwise of same angular velocity with valve plate around valve plate rotating shaft together with main equilibrium block, until valve plate is opened to maximum opening angle, in valve plate closing process, in the time being opened to the valve plate of maximum position and progressively closing, valve plate does clockwise direction rotation, main equilibrium block and secondary equilibrium block do with valve plate and rotate with angular velocity around valve plate rotating shaft, when the focus point that rotates to secondary equilibrium block around valve plate rotating shaft when secondary equilibrium block is crossed the vertical line of valve plate spindle central point, secondary equilibrium block is around valve plate rotating shaft rotation simultaneously, under Action of Gravity Field, rotate to by secondary equilibrium block baffle plate and block around secondary equilibrium block rotating shaft at once, then continue to transfer around valve plate rotating shaft rotation, until valve plate is closed completely with the dextrorotation of valve plate, when valve plate is that valve plate is during with valve plate inlet seal circle phase sealing state in plumbness, main equilibrium block is directly over vertical valve plate, secondary equilibrium block becomes 2 ° ~ 15 ° maximum angles to tilt to valve outlet port direction with main equilibrium block, now main equilibrium block and secondary equilibrium block form and are greater than to the gravity of valve import one side to the gravity of valve outlet port one side, thereby make valve plate counterweight balancing device can have a power that valve plate is pressed to valve plate inlet seal circle, and form certain sealing, in the time that valve plate is backed down certain angle by the atmospheric pressure of valve import or hydraulic coupling, valve plate and valve plate counterweight balancing device form leverage, but this leverage does not reach balance, but still have a less valve plate that can make to be returned to the leverage power of closed condition, because the leverage power of this return action is less than the leverage power with respect to valve plate rotating shaft that in valve plate opening process, valve plate produces, therefore, this safety check is very energy-conservation, the check valve body structural modification of valve plate counterweight balancing device is little, only have the space of valve plate upside is strengthened, thereby make valve plate counterweight balancing device have can be with the opening and closing of valve plate the space around 0 ° ~ 90 ° of valve plate rotating shaft rotations, simultaneously the upper flange of safety check also have 30mm ~ 200 mm on move, spacing and the alignment thereof of suction flange and outlet(discharge) flange are constant.
(3) valve plate counterweight balancing device is made up of the valve plate counterweight balancing device of structure a cambered way and a gravity block, comprise a cambered way, a gravity block and a pull bar, cambered way is fixedly mounted on valve plate contiguous block away from valve plate one end, the jointing of cambered way and valve plate contiguous block is perpendicular to valve plate contiguous block, the arc of cambered way epimere is towards valve outlet port bending, in the middle of cambered way, there is a slideway, a gravity block supporting axle is passed in the central authorities position on the upper side of gravity block, supporting axle can in gravity block, rotate so that gravity block keeps the state that naturally droops of gravity block in cambered way moving process, the two ends of gravity block supporting axle are stuck on cambered way and can move along cambered way, gravity block supporting axle is respectively connected with a pull bar through the two ends after cambered way, the other end of two pull bars is connected to both sides, stage casing, valve plate counterweight balancing device rotary moveable region, valve inducer top, with valve plate rotating shaft in same level position but be the position of 30mm ~ 500 mm apart from valve plate rotating shaft, the joint, two ends of two pull bars is axle and connects, and all can rotate around coupling shaft, when valve plate is progressively opened and in the time that valve plate rotating shaft is rotated counterclockwise, drive the cambered way being fixedly linked by valve plate contiguous block with valve plate to do same angular velocity rotation, due to the effect of two pull bars, when cambered way does same angular velocity rotation, two pull bars are pushed gravity block to cambered way and are moved away from valve plate contiguous block direction, thereby constantly increase the leverage power of gravity block with respect to valve plate rotating shaft, but along with valve plate is opened the increase that is rotated counterclockwise angle, valve plate also constantly increases with respect to the leverage power of valve plate rotating shaft, make ever-increasing gravity block be less than all the time the valve plate of continuous increase with respect to the leverage power of valve plate rotating shaft with respect to the leverage power of valve plate rotating shaft, thereby make valve plate under any opening state, have all the time one can make valve plate in being returned to the active force of closed condition position, because the leverage power of this return action is less than the leverage power with respect to valve plate rotating shaft that in valve plate opening process, valve plate produces, therefore, this safety check is very energy-conservation, the check valve body structural modification of valve plate counterweight balancing device is little, only have the space of valve plate upside is strengthened, thereby make valve plate counterweight balancing device have can be with the opening and closing of valve plate the space around 0 ° ~ 90 ° of valve plate rotating shaft rotations, simultaneously the upper flange of safety check also have 30mm ~ 200 mm on move, spacing and the alignment thereof of suction flange and outlet(discharge) flange are constant.
(4) the valve plate counterweight balancing device that the cross section of its vertical valve plate face of valve plate counterweight balancing device is arcuate structure, the arc equilibrium block that the cross section that comprises a vertical valve plate face is arc, arc equilibrium block is arranged on valve plate contiguous block away from valve plate one end, arc equilibrium block has an arc-shaped bend towards valve outlet port, making in valve plate plumbness is that valve plate is during with valve plate inlet seal circle phase sealing state, the center of gravity of arc equilibrium block moves apart valve plate central axis, be offset 5 mm ~ 50mm to valve outlet port, thereby making valve plate is that valve plate is during with valve plate inlet seal circle phase sealing state in plumbness, can there is a power that valve plate is pressed to valve plate inlet seal circle, and form certain sealing, in the time that valve plate is backed down certain angle by the atmospheric pressure of valve import or hydraulic coupling, valve plate and valve plate counterweight balancing device form leverage, but this leverage does not reach balance, but still have the leverage power that can make valve plate be returned to closed condition, because the leverage power of this return action is less than the leverage power with respect to valve plate rotating shaft that in valve plate opening process, valve plate produces, therefore, this safety check is very energy-conservation, the check valve body structural modification of valve plate counterweight balancing device is little, only have the space of valve plate upside is strengthened, thereby make valve plate counterweight balancing device have can be with the opening and closing of valve plate the space around 0 ° ~ 90 ° of valve plate rotating shaft rotations, simultaneously the upper flange of safety check also have 30mm ~ 200 mm on move, spacing and the alignment thereof of suction flange and outlet(discharge) flange are constant.
(5) valve plate counterweight balancing device is made up of the valve plate counterweight balancing device of structure stable equilibrium piece and mobile balanced block: comprise a stable equilibrium piece, a mobile balanced block and a taper slide, stable equilibrium piece is arranged on valve plate contiguous block away from valve plate one end, and parallel with valve plate face, near valve outlet port one side, a taper slide is installed at stable equilibrium piece, the lower end of taper slide is fixedly connected with valve plate contiguous block, upper end has the upper end of a bent plate and stable equilibrium piece to be fixedly linked, taper slide and the stable equilibrium piece δ that has angle, 3 °≤δ≤25 °, in mobile balanced block, there is a banded hole matching with taper slide width and thickness, this banded borehole jack is contained on taper slide and can on taper slide, slides, mobile balanced block one side has multiple screw holes, the screw of screwing on withstands on and on taper slide, fixes mobile balanced block, regulating the position of mobile balanced block on taper slide the screw of screwing on to withstand on taper slide fixes, make valve plate counterweight balancing device be less than the leverage power of valve plate with respect to valve plate rotating shaft with respect to the leverage power of valve plate rotating shaft, thereby make valve plate all there is the leverage power that can make valve plate be returned to closed condition in any opening state, because the leverage power of this return action is less than the leverage power with respect to valve plate rotating shaft that in valve plate opening process, valve plate produces, therefore, this safety check is very energy-conservation, the check valve body structural modification of valve plate counterweight balancing device is little, only have the space of valve plate upside is strengthened, thereby make valve plate counterweight balancing device have can be with the opening and closing of valve plate the space around 0 ° ~ 90 ° of valve plate rotating shaft rotations, simultaneously the upper flange of safety check also have 30mm ~ 200 mm on move, spacing and the alignment thereof of suction flange and outlet(discharge) flange are constant.
3, in the structure of existing safety check, only increase a counter weight device that can automatically regulate to valve plate, so except increasing to valve body the space of valve plate counter weight device activity, do not need to do other Change In Design, the mounting flange spacing that comprises safety check is constant, is convenient to like this change and install to existing safety check.
The present invention compared with prior art has the following advantages:
1. after safety check is opened gradually by fluid impact, valve plate is in a stable open mode, open valve plate to keep the opening state of safety check and no longer need to stablize by the impact force of fluid, and valve plate is in opening procedure gradually, the mobile lever balance that regulates balancing weight and valve plate of balancing weight, thereby make valve plate in opening process, need the impact force of liquid or gas all the time less, and then make safety check all there is less resistance under any aperture state.
2. the moment disappearing at the hydrodynamic pressure of valve entrance point, because the pressure of valve outlet port end does not also have enough time to disappear, so, overbottom pressure can be back in safety check immediately, thereby energy auto impact valve plate, making just had the unbalanced valve plate of certain lever to guarantee to be returned to the position of closure of check ring originally.
3. because the present invention has only increased a counter weight device to valve plate, so except increasing to valve chamber the space of valve plate Equilibrator activity, do not need to do other Change In Design, the mounting flange spacing that is safety check is constant, be convenient to like this change and install to existing safety check, also can meet preferably GB requirement simultaneously.
Brief description of the drawings
Fig. 1 is the generalized section that the cross section of the vertical valve plate face of the present invention is asymmetric sector structure embodiment;
Fig. 2 is valve plate and Equilibrator schematic diagram embodiment illustrated in fig. 1;
Fig. 3 is R-R schematic diagram embodiment illustrated in fig. 1;
Fig. 4 is the main equilibrium block of the present invention and secondary equilibrium block composition structure embodiment's generalized section;
Fig. 5 is valve plate half-open position schematic diagram embodiment illustrated in fig. 4;
Fig. 6 is valve plate and Equilibrator schematic diagram embodiment illustrated in fig. 4;
Fig. 7 is S-S schematic diagram embodiment illustrated in fig. 6;
Fig. 8 is P enlarged diagram embodiment illustrated in fig. 7;
Fig. 9 is cambered way of the present invention and gravity block composition structure embodiment's generalized section;
Figure 10 is valve plate half-open position schematic diagram embodiment illustrated in fig. 9;
Figure 11 is Q enlarged diagram embodiment illustrated in fig. 9;
Figure 12 is that the cross section of the vertical valve plate face of the present invention is arcuate structure embodiment's generalized section;
Figure 13 is valve plate and Equilibrator schematic diagram embodiment illustrated in fig. 12;
Figure 14 is T-T schematic diagram embodiment illustrated in fig. 13;
Figure 15 is stable equilibrium piece of the present invention and mobile balanced block composition structure embodiment's generalized section;
Figure 16 is valve plate and Equilibrator schematic diagram embodiment illustrated in fig. 15.
In Fig. 1-16: 1, suction flange 2, valve import 3, valve body 4, valve plate inlet seal circle 5, valve plate 6, valve plate rotating shaft 7, equilibrium block 8, valve chamber 9, upper flange mouth 10, upper flange 11, valve outlet port 12, outlet(discharge) flange 13, flange screw 14, valve plate contiguous block 15, main equilibrium block 16, secondary equilibrium block 17, secondary equilibrium block rotating shaft 18, secondary equilibrium block baffle plate 19, pull bar 20, gravity block 21, cambered way 22, gravity block supporting axle 23, arc equilibrium block 24, stable equilibrium piece 25, mobile balanced block 26, taper slide.
Embodiment
Install in the embodiment of safety check in the level shown in Fig. 1-16: the micro-resistance safety check of slideway structure, comprise can seal with valve plate inlet seal circle 4 and rotarily open in valve body 3 and the valve plate 5 of closing and the valve plate counterweight balancing device being connected away from valve plate 5 one sides with valve plate contiguous block 14 in being mounted on valve body 3 by a valve plate rotating shaft 6 with valve plate contiguous block 14, valve plate contiguous block 14 central authorities between valve plate counterweight balancing device and valve plate 5 are valve plate rotating shaft 6, it is characterized in that: its valve plate counterweight balancing device of safety check that level is installed has five kinds of structures: the cross section that its vertical valve plate of valve plate counterweight balancing device is 5 is asymmetric sector structure, valve plate counterweight balancing device forms structure by main equilibrium block and secondary equilibrium block, valve plate counterweight balancing device forms structure by a cambered way and a gravity block, the cross section that its vertical valve plate of valve plate counterweight balancing device is 5 is banana arc structure, valve plate counterweight balancing device forms structure by stable equilibrium piece and mobile balanced block, its valve plate counterweight balancing device structure of vertically arranged safety check is identical with its valve plate counterweight balancing device structure of safety check that level is installed, but the balance weight difference of valve plate counterweight balancing device.
Five kinds of structures of its valve plate counterweight balancing device of safety check that level is installed:
(1) the valve plate counterweight balancing device that the cross section of its vertical valve plate face of valve plate counterweight balancing device is asymmetric sector structure, the cross section that comprises 5 of vertical valve plates is asymmetric fan-shaped equilibrium block, equilibrium block 7 is arranged on valve plate contiguous block 14 away from valve plate 5 one end, equilibrium block 7 is towards the side of valve import 2 one sides and the angle α of valve plate 5 plane compositions, than equilibrium block 7 towards the angle β of the side of valve outlet port 11 1 sides and valve plate 5 planes compositions little 3 ° ~ 15 °, and 0 °≤α≤20 °, 3 °≤β≤35 °, making valve plate 5 is that valve plate 5 is during with valve plate inlet seal circle 4 phase sealing state in plumbness, the fan section of valve plate counterweight balancing device is slightly larger than to the gravity of valve import 2 one sides to the gravity of valve outlet port 11 1 sides, thereby make valve plate counterweight balancing device can have a less power that valve plate 5 is pressed to valve plate inlet seal circle 4, and form certain sealing, also have in addition two kinds of other structures, the one, α=0 °, β=0 °, but the center of gravity of this valve plate counterweight balancing device is at valve plate 5 plane deflection valve outlet port 11 1 side 2mm ~ 100mm, the 2nd, valve plate counterweight balancing device compares the sector structure large away from valve plate contiguous block 14 one end near valve plate contiguous block 14 one end, and the center of gravity that meets equally valve plate counterweight balancing device is at valve plate 5 planes deflection valve outlet port 11 1 side 2mm ~ 100mm, in the time that valve plate 5 is backed down certain angle by the atmospheric pressure of valve import 2 or hydraulic coupling, valve plate 5 forms leverage with valve plate counterweight balancing device, but this leverage does not reach balance, but still have a less valve plate 5 that can make to be returned to the leverage power of closed condition, because the leverage power of this return action is less than the leverage power with respect to valve plate rotating shaft 6 that in valve plate 5 opening processes, valve plate 5 produces, therefore, this safety check is very energy-conservation, check valve body 3 structural modification of valve plate counterweight balancing device are less, only have the space of valve plate 5 upsides is strengthened, thereby make valve plate counterweight balancing device there is the space that can rotate with the opening and closing of valve plate 50 ° ~ 90 ° around valve plate rotating shaft 6, simultaneously the upper flange 10 of safety check also have 30mm ~ 200 mm on move, spacing and the alignment thereof of suction flange 1 and outlet(discharge) flange 12 are constant.
(2) valve plate counterweight balancing device is made up of the valve plate counterweight balancing device of structure main equilibrium block and secondary equilibrium block, comprise a main equilibrium block and a secondary equilibrium block composition valve plate counterweight balancing device, main equilibrium block 15 and secondary equilibrium block 16 are with being arranged on valve plate contiguous block 14 away from valve plate 5 one end, main equilibrium block 15 is arranged on towards valve import 2 one sides, secondary equilibrium block 16 is arranged on towards valve outlet port 11 1 sides, main equilibrium block 15 is fixedly connected with valve plate contiguous block 14, secondary equilibrium block 16 is connected with valve plate contiguous block 14 by a secondary equilibrium block rotating shaft 17, secondary equilibrium block 16 can do a low-angle rotation around secondary equilibrium block rotating shaft 17, 2 °≤≤ 15 °, turn clockwise the angle of from being fitted in the position of main equilibrium block 15, being installed in valve plate contiguous block 14 blocks and stops near the secondary equilibrium block baffle plate 18 of valve outlet port 11 sides, when valve plate 5 is that valve plate 5 is during in closed condition in plumbness, main equilibrium block 15 and secondary equilibrium block 16, be positioned at the positive upside of valve plate 5, and secondary equilibrium block 16 abuts in secondary equilibrium block baffle plate 18 positions near secondary equilibrium block rotating shaft 17 positions, now secondary equilibrium block 16 separates a maximum angle with main equilibrium block 15: 2 ° ~ 15 °, in the time that valve plate 5 is opened, along with valve plate 5 is rotated counterclockwise the increase of angle around valve plate rotating shaft 6, along with valve plate 5 is in the time that valve plate rotating shaft 6 is rotated, main equilibrium block 15 and secondary equilibrium block 16 do and being rotated counterclockwise of valve plate 5 same angular velocity around valve plate rotating shaft 6, and when valve plate 5 is in the time that valve plate rotating shaft 6 is rotated counterclockwise angle and reaches the maximum angle that secondary equilibrium block 16 separates with main equilibrium block 15, be that the focus point of secondary equilibrium block 16 is while crossing the vertical line of valve plate rotating shaft 6 central points, secondary equilibrium block 16 is under Action of Gravity Field, be rotated counterclockwise fast the position overlapping with main equilibrium block 15, and then do being rotated counterclockwise of same angular velocity with valve plate 5 around valve plate rotating shaft 6 together with main equilibrium block 15, until valve plate 5 is opened to maximum opening angle, in valve plate 5 closing process, in the time being opened to the valve plate 5 of maximum position and progressively closing, valve plate 5 does clockwise direction rotation, main equilibrium block 15 and secondary equilibrium block 16 do with valve plate 5 and rotate with angular velocity around valve plate rotating shaft 6, when the focus point that rotates to secondary equilibrium block 16 around valve plate rotating shaft 6 when secondary equilibrium block 16 is crossed the vertical line of valve plate rotating shaft 6 central points, secondary equilibrium block 16 is around valve plate rotating shaft 6 rotations simultaneously, under Action of Gravity Field, rotate to by secondary equilibrium block baffle plate 18 and block around secondary equilibrium block rotating shaft 17 at once, then continue to transfer to rotate around valve plate rotating shaft 6 with the dextrorotation of valve plate 5, until valve plate 5 is closed completely, when valve plate 5 is that valve plate 5 is during with valve plate inlet seal circle 4 phase sealing state in plumbness, main equilibrium block 15 is directly over vertical valve plate 5, secondary equilibrium block 16 2 ° ~ 15 ° angles maximum with 15 one-tenth one of main equilibrium block tilts to valve outlet port 11 directions, now main equilibrium block 15 and secondary equilibrium block 16 form to the gravity of valve outlet port 11 1 sides and are slightly larger than to the gravity of valve import 2 one sides, thereby make valve plate counterweight balancing device can have a less power that valve plate 5 is pressed to valve plate inlet seal circle 4, and form certain sealing, in the time that valve plate 5 is backed down certain angle by the atmospheric pressure of valve import 2 or hydraulic coupling, valve plate 5 forms leverage with valve plate counterweight balancing device, but this leverage does not reach balance, but still have a less valve plate 5 that can make to be returned to the leverage power of closed condition, because the leverage power of this return action is less than the leverage power with respect to valve plate rotating shaft 6 that in valve plate 5 opening processes, valve plate 5 produces, therefore, this safety check is very energy-conservation, check valve body 3 structural modification of valve plate counterweight balancing device are less, only have the space of valve plate 5 upsides is strengthened, thereby make valve plate counterweight balancing device there is the space that can rotate with the opening and closing of valve plate 50 ° ~ 90 ° around valve plate rotating shaft 6, simultaneously the upper flange 10 of safety check also have 30mm ~ 200 mm on move, spacing and the alignment thereof of suction flange 1 and outlet(discharge) flange 12 are constant.
(3) valve plate counterweight balancing device is made up of the valve plate counterweight balancing device of structure a cambered way and a gravity block, comprise a cambered way 21, a gravity block 20 and a pull bar 19, cambered way 21 is fixedly mounted on valve plate contiguous block 14 away from valve plate 5 one end, the jointing of cambered way 21 and valve plate contiguous block 14 is perpendicular to valve plate contiguous block 14, the arc of cambered way 21 epimeres is towards valve outlet port 11 bendings, in the middle of cambered way 21, there is a slideway, a gravity block supporting axle 22 is passed in the central authorities position on the upper side of gravity block 20, supporting axle can in gravity block, rotate so that gravity block keeps the state that naturally droops of gravity block in cambered way moving process, the two ends of gravity block supporting axle 22 are stuck on cambered way 21 and can move along cambered way, gravity block supporting axle 22 is respectively connected with a pull bar 19 through the two ends after cambered way 21, the other end of two pull bars 19 is connected to both sides, stage casing, valve plate counterweight balancing device rotary moveable region, 2 sections of tops of valve import, be the position of 30mm ~ 500 mm with valve plate rotating shaft 6 in same level position but apart from valve plate rotating shaft 6, the joint, two ends of two pull bars 19 is axle and connects, and all can rotate around coupling shaft, when valve plate 5 is progressively opened and in the time that valve plate rotating shaft 6 is rotated counterclockwise, drive the cambered way 21 being fixedly linked by valve plate contiguous block 14 with valve plate 5 to do same angular velocity rotation, due to the effect of two pull bars 19, when cambered way 21 does same angular velocity rotation, two pull bars 19 are pushed gravity block 20 to cambered way 21 and are moved away from valve plate contiguous block 14 directions, thereby constantly increase the leverage power of gravity block 20 with respect to valve plate rotating shaft 6, but along with valve plate 5 is opened the increase that is rotated counterclockwise angle, valve plate 5 also constantly increases with respect to the leverage power of valve plate rotating shaft 6, make ever-increasing gravity block 20 be slightly less than all the time the valve plate 5 of continuous increase with respect to the leverage power of valve plate rotating shaft 6 with respect to the leverage power of valve plate rotating shaft 6, thereby make valve plate 5 under any opening state, have all the time one less can make valve plate 5 in being returned to the active force of closed condition position, because the leverage power of this return action is less than the leverage power with respect to valve plate rotating shaft 6 that in valve plate 5 opening processes, valve plate 5 produces, therefore, this safety check is very energy-conservation, check valve body 3 structural modification of valve plate counterweight balancing device are less, only have the space of valve plate 5 upsides is strengthened, thereby make valve plate counterweight balancing device there is the space that can rotate with the opening and closing of valve plate 50 ° ~ 90 ° around valve plate rotating shaft 6, simultaneously the upper flange 10 of safety check also have 30mm ~ 200 mm on move, spacing and the alignment thereof of suction flange 1 and outlet(discharge) flange 12 are constant.
(4) the valve plate counterweight balancing device that the cross section of its vertical valve plate face of valve plate counterweight balancing device is arcuate structure, the arc equilibrium block 23 that the cross section that comprises 5 of vertical valve plates is arc, arc equilibrium block 23 is arranged on valve plate contiguous block 14 away from valve plate 5 one end, arc equilibrium block 23 has an arc-shaped bend towards valve outlet port 11, making in valve plate 5 plumbnesss is that valve plate 5 is during with valve plate inlet seal circle 4 phase sealing state, the center of gravity of arc equilibrium block 23 moves apart valve plate 5 central axis, be offset 5 mm ~ 50mm to valve outlet port 11, thereby making valve plate 5 is that valve plate 5 is during with valve plate inlet seal circle 4 phase sealing state in plumbness, can there is a less power that valve plate 5 is pressed to valve plate inlet seal circle 4, and form certain sealing, in the time that valve plate 5 is backed down certain angle by the atmospheric pressure of valve import 2 or hydraulic coupling, valve plate 5 forms leverage with valve plate counterweight balancing device, but this leverage does not reach balance, but still have a less valve plate 5 that can make to be returned to the leverage power of closed condition, because the leverage power of this return action is less than the leverage power with respect to valve plate rotating shaft 6 that in valve plate 5 opening processes, valve plate 5 produces, therefore, this safety check is very energy-conservation, check valve body 3 structural modification of valve plate counterweight balancing device are less, only have the space of valve plate 5 upsides is strengthened, thereby make valve plate counterweight balancing device there is the space that can rotate with the opening and closing of valve plate 50 ° ~ 90 ° around valve plate rotating shaft 6, simultaneously the upper flange 10 of safety check also have 30mm ~ 200 mm on move, spacing and the alignment thereof of suction flange 1 and outlet(discharge) flange 12 are constant.
(5) valve plate counterweight balancing device is made up of the valve plate counterweight balancing device of structure stable equilibrium piece and mobile balanced block: comprise a stable equilibrium piece 24, a mobile balanced block 25 and a taper slide 26, E structure stable equilibrium piece 24 is arranged on valve plate contiguous block 14 away from valve plate 5 one end, and parallel with 5 of valve plates, near valve outlet port 11 1 sides, a taper slide 26 is installed at stable equilibrium piece 24, the lower end of taper slide 26 is fixedly connected with valve plate contiguous block 14, upper end has the upper end of a bent plate and stable equilibrium piece 24 to be fixedly linked, taper slide 26 and stable equilibrium piece 24 δ that has angle, 3 °≤δ≤25 °, in mobile balanced block 25, there is a banded hole matching with taper slide 26 width and thickness, this banded borehole jack is contained on taper slide 26 and can on taper slide 26, slides, mobile balanced block 25 1 sides have multiple screw holes, the screw of screwing on withstands on and on taper slide 26, fixes mobile balanced block 25, regulating the position of mobile balanced block 25 on taper slide 26 screw of screwing on to withstand on taper slide 26 fixes, make valve plate counterweight balancing device be slightly less than the leverage power of valve plate 5 with respect to valve plate rotating shaft 6 with respect to the leverage power of valve plate rotating shaft 6, thereby make valve plate 5 all there is the leverage power that can make valve plate 5 be returned to closed condition in any opening state, because the leverage power of this return action is less than the leverage power with respect to valve plate rotating shaft 6 that in valve plate 5 opening processes, valve plate 5 produces, therefore, this safety check is very energy-conservation, check valve body 3 structural modification of valve plate counterweight balancing device are less, only have the space of valve plate 5 upsides is strengthened, thereby make valve plate counterweight balancing device there is the space that can rotate with the opening and closing of valve plate 50 ° ~ 90 ° around valve plate rotating shaft 6, simultaneously the upper flange 10 of safety check also have 30mm ~ 200 mm on move, spacing and the alignment thereof of suction flange 1 and outlet(discharge) flange 12 are constant.
In the structure of existing safety check, increase a counter weight device that can automatically regulate only to valve plate 5, so except increasing the space of valve plate 5 counter weight device activities to valve body 3, do not need to do other Change In Design, the mounting flange spacing that comprises safety check is constant, is convenient to like this change and install to existing safety check.
Claims (1)
1. the micro-resistance safety check of slideway structure, comprise by a valve plate rotating shaft (6) and valve plate contiguous block (14) and be mounted on can and rotarily open and the valve plate of closing (5) and the valve plate counterweight balancing device being connected away from valve plate (5) one sides with valve plate contiguous block (14) with valve plate inlet seal circle (4) sealing in valve body (3) in valve body (3), valve plate contiguous block (14) central authorities between valve plate counterweight balancing device and valve plate (5) are valve plate rotating shaft (6); It is characterized in that: the safety check that level is installed, valve plate counterweight balancing device is made up of a cambered way and a gravity block;
Its valve plate counterweight balancing device structure of vertically arranged safety check is identical with its valve plate counterweight balancing device structure of safety check that level is installed, but the balance weight difference of valve plate counterweight balancing device;
Its valve plate counterweight balancing device of safety check that level is installed, comprise a cambered way (21), a gravity block (20) and a pull bar (19), cambered way (21) is fixedly mounted on valve plate contiguous block (14) away from valve plate (5) one end, the jointing of cambered way (21) and valve plate contiguous block (14) is perpendicular to valve plate contiguous block (14), the arc of cambered way (21) epimere is towards valve outlet port (11) bending, in the middle of cambered way (21), there is a slideway, a gravity block supporting axle (22) is passed in the central authorities position on the upper side of gravity block (20), supporting axle can in gravity block, rotate so that gravity block keeps the state that naturally droops of gravity block in cambered way moving process, the two ends of gravity block supporting axle (22) are stuck in the upper energy of cambered way (21) and move along cambered way, gravity block supporting axle (22) is respectively connected with a pull bar (19) through the two ends after cambered way (21), the other end of two pull bars (19) is connected to both sides, stage casing, valve plate counterweight balancing device rotary moveable region, valve import (2) section top, be the position of 30mm ~ 500 mm with valve plate rotating shaft (6) in same level position but apart from valve plate rotating shaft (6), the joint, two ends of two pull bars (19) is axle and connects, and all can rotate around coupling shaft, when valve plate (5) is progressively opened and in the time that valve plate rotating shaft (6) is rotated counterclockwise, drive the cambered way (21) being fixedly linked by valve plate contiguous block (14) with valve plate (5) to do same angular velocity rotation, due to the effect of two pull bars (19), when cambered way (21) does same angular velocity rotation, two pull bars (19) are pushed gravity block (20) to cambered way (21) and are moved away from valve plate contiguous block (14) direction, thereby constantly increase the leverage power of gravity block (20) with respect to valve plate rotating shaft (6), but along with valve plate (5) is opened the increase that is rotated counterclockwise angle, valve plate (5) also constantly increases with respect to the leverage power of valve plate rotating shaft (6), make ever-increasing gravity block (20) be less than all the time the valve plate (5) of continuous increase with respect to the leverage power of valve plate rotating shaft (6) with respect to the leverage power of valve plate rotating shaft (6), thereby make valve plate (5) under any opening state, have all the time one can make valve plate (5) in being returned to the active force of closed condition position, because the leverage power of this return action is less than the leverage power with respect to valve plate rotating shaft (6) that in valve plate (5) opening process, valve plate (5) produces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420280758.0U CN203857092U (en) | 2014-02-23 | 2014-02-23 | Slide-structured micro-resistance check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420280758.0U CN203857092U (en) | 2014-02-23 | 2014-02-23 | Slide-structured micro-resistance check valve |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420075824.0 Division | 2014-02-23 |
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| Publication Number | Publication Date |
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| CN201420280758.0U Expired - Fee Related CN203857092U (en) | 2014-02-23 | 2014-02-23 | Slide-structured micro-resistance check valve |
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| CN (1) | CN203857092U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265957A (en) * | 2014-10-18 | 2015-01-07 | 魏伯卿 | Spring type micro resistance check valve |
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2014
- 2014-02-23 CN CN201420280758.0U patent/CN203857092U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265957A (en) * | 2014-10-18 | 2015-01-07 | 魏伯卿 | Spring type micro resistance check valve |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141001 Termination date: 20160223 |