Lobe formula wind-regulating valve
Technical field
The present utility model relates to a kind of lobe formula wind-regulating valve of new structure, while specifically using, is arranged on air inlet, and the aperture of regulating wind-regulating valve changes the performance curve of pipeline, to meet the demand of production process.
Background technique
Blower fan always with the pipe network joint work, if the resistance of pipe network system is stable in cooperation, blower fan also can be stabilized in a certain operating mode work, usually take the design conditions that this operating mode is blower fan.In service in actual production, the resistance of pipe network can often change, and, according to the needs of production process, also requires the flow of blower fan or the variation of pressure to meet its specific value.For reaching this purpose, blower fan, should be according to the variation of pipe network performance in actual motion, itself performance curve of corresponding change, and this process is called the property regulation of blower fan.Usually, the adjusting task of blower fan for a change during flow blower fan at a certain operating point, move, to meet manufacturing technique requirent.
In traditional air inlet is regulated, use conventional petals formula wind-regulating valve to carry out air inlet adjustment, but this kind of wind-regulating valve complex manufacturing technology, working life is short, and volume weight is larger, and inconvenience is installed, and use occasion is limited, need to be than large driving force, cost is higher.Adjusting for blower fan use and field working conditions has considerable influence.
Summary of the invention
The utility model discloses lobe formula wind-regulating valve for a kind of air inlet, to solve existing wind-regulating valve complex manufacturing technology, working life is short, and volume weight is larger, and inconvenience is installed, and use occasion is limited, need to be than large driving force, and the problem that cost is higher.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of lobe formula wind-regulating valve, comprise cylindrical shell, a plurality of lobe formula valve plate and carry out circle, it is characterized in that:
Described cylindrical shell is along circumferentially being evenly distributed with a plurality of shaft sleeves, and the quantity of described a plurality of shaft sleeves is identical with the quantity of described a plurality of lobe formula valve plates, and the center line of described a plurality of shaft sleeves is intersected in the same point on the longitudinal center line of described cylindrical shell;
Described a plurality of lobe formula valve plate is distributed in described cylindrical shell radially, each lobe formula valve plate is fixedly connected with a rotatingshaft, described rotatingshaft is rotatably installed in described shaft sleeve, and each rotatingshaft stretches out the outer part of cylindrical shell and radially is connected with the first segment that the bulb ball connects;
Described execution circle is fixedly connected with the second section that described bulb ball connects.
Described lobe formula wind-regulating valve, wherein: described cylindrical shell is the air intake horn mouth of blower fan.
Described lobe formula wind-regulating valve, wherein: described lobe formula valve plate is the sector flat plate structure, and lobe formula valve plate both sides are bent into the flange of several angle to strengthen lobe formula valve plate intensity, and the large end of lobe formula valve plate is along the blanking cutting moulding of cylindrical shell circumferencial direction and be spliced into circle.
Described lobe formula wind-regulating valve, wherein: after described lobe formula valve plate small end splicing, be a circle naturally, described natural diameter of a circle is larger than the main shaft diameter of blower fan.
Described lobe formula wind-regulating valve, wherein: when described a plurality of lobe formula valve plates are in the closed position, leave the gap of 4~5mm between two adjacent lobe formula valve plates.
Described lobe formula wind-regulating valve, wherein: the gap that there is 7~10mm between the outer rim of described lobe formula valve plate and the bell-mouthed inwall of air intake.
Described lobe formula wind-regulating valve, wherein: coaxially be fixed with a bearing sleeve in each shaft sleeve, described rotatingshaft is rotatably installed in described bearing sleeve by bearing.
Described lobe formula wind-regulating valve, wherein: each rotatingshaft stretches out the outer partial fixing of cylindrical shell and is connected with contiguous block, and described contiguous block is connected to the first segment that described bulb ball connects.
Described lobe formula wind-regulating valve, wherein: described execution circle also is connected with Execution driven mechanism.
Compared with prior art, adopt the advantage the utlity model has of technique scheme to be:
1, the utility model takes full advantage of the confined space of large-scale ventilator, the air intake horn mouth of ventilator is used, both utilized the astriction of horn mouth to air-flow, in again the regulating action of register being added on, particularly, for the installation of large-scale dual-gripper blower fan, this novel register can be realized not interfereing with each other of main shaft and register.
2. the utility model adopts brand-new lobe formula valve board structure, and while having the work operation, noise is low, flow resistance is little, the wind energy loss is few, the little characteristics of required push rod thrust.
The accompanying drawing explanation
Fig. 1 is the plan view completed after assembling of the present utility model;
Fig. 2 is Fig. 1 along the stereo amplification figure after F-F line subdivision;
Fig. 3 is Fig. 2 (H position) partial enlarged drawing;
Fig. 4 is Fig. 2 (G position) partial enlarged drawing;
Fig. 5 is each component exploded view of the utility model.
Description of reference numerals: 1-cylindrical shell; The 2-contiguous block; 3-bulb ball connects; The 4-rotatingshaft; The 5-bearing sleeve; 6-lobe formula valve plate; 7-carries out circle; The 71-connecting rod; The 8-bearing; The 9-screw; 10-resilient bearing back-up ring; The 11-locking nut; The 12-fixing bolt; The 13-shaft sleeve; The d-spacing.
Embodiment
The lobe formula wind-regulating valve that the utility model provides, main use is large at impeller diameter, weight is larger, need on the large-scale ventilator, induced draught fan of two end supports, these blower fans are because of the impact of mounting structure, generally conventional register can't be installed, this novel lobe formula wind-regulating valve can meet the usage requirement that this type of fan delivery is regulated.
As shown in Figure 1 and Figure 2, the utility model provides a kind of lobe formula wind-regulating valve, and comprise cylindrical shell 1, a plurality of lobe formula valve plate 6 and carry out circle 7, wherein:
In the present embodiment, described cylindrical shell 1 is the air intake horn mouth of having used blower fan, described cylindrical shell 1 is along circumferentially being evenly distributed with a plurality of shaft sleeves 13, the quantity of described a plurality of shaft sleeve 13 is identical with the quantity of described a plurality of lobe formula valve plates 6, and the center line of described a plurality of shaft sleeve 13 is intersected in the same point on the longitudinal center line of described cylindrical shell 1; Each shaft sleeve 13 is interior coaxially is fixed with a bearing sleeve 5, and the several fixing bolts 12 of described bearing sleeve 5 use are fixed;
Described a plurality of lobe formula valve plate 6 is distributed in described cylindrical shell 1 radially, shown in Fig. 3, Fig. 5, each lobe formula valve plate 6 is fixedly connected with a rotatingshaft 4, described rotatingshaft 4 is rotatably installed in described bearing sleeve 5 by bearing 8, and the partial fixing that each rotatingshaft 4 stretches out outside cylindrical shell 1 is connected with contiguous block 2, described contiguous block 2 connects 3 first segment along the bulb ball that radially is extended with of described rotatingshaft 4, and is fixed with screw 9;
Described execution circle 7 connects 3 second section by locking nut 11 and all described bulb balls and is fixedly connected with, and described execution circle 7 also is connected with Execution driven mechanism by a connecting rod 7.。
When described execution circle 7 is driven to full open position, by the bulb ball connect 3 and contiguous block 2 drive rotatingshaft 4 and a plurality of lobe formula valve plate 6 synchronous rotaries, make described a plurality of lobe formula valve plate 6 all with the axial direction of described cylindrical shell 1, approach and parallel, unhinderedly pass through to allow air-flow; When described execution circle 7 is driven to closed position, again by the bulb ball connect 3 and contiguous block 2 drive rotatingshafts 4 and the 6 reverse sync rotations of a plurality of lobe formula valve plate, make described a plurality of lobe formula valve plate 6 all approach perpendicularly with the axial direction of described cylindrical shell 1, pass through with barrier air.In the present embodiment, when described a plurality of lobe formula valve plates 6 are in the closed position, leave the spacing d of 4-5mm between two adjacent lobe formula valve plates 6, and there is the gap (as shown in Figure 4) of 7~10mm between lobe formula valve plate 6 outer rims and air intake horn mouth 1 inwall, in order to avoid lobe formula valve plate 6 each other or and air intake horn mouth 1 inwall between bump and damage.
Wherein, described lobe formula valve plate 6 is some identical sector flat plate structures, lobe formula valve plate 6 both sides are bent into the flange of several angle, lobe formula valve plate 6 is held along the moulding of horn mouth circumferencial direction blanking cutting greatly, and be spliced into circle, after the 6 small end splicings of lobe formula valve plate, be a circle naturally, described natural diameter of a circle is more bigger than the main shaft of ventilator or induced draught fan.
It should be noted that the utility model has higher requirement to installation precision, for example, the bell-mouthed making of air intake must be very accurate, to guarantee the concentricity of the circle that bell-mouthed flange, inner circle and lobe formula valve plate 6 are spliced into; The making of shaft sleeve also must be very accurate, and shaft sleeve and horn mouth welding need professional welding technician to complete, and with the center line that guarantees shaft sleeve, with the center line of rotatingshaft 4, overlap.
Shaft sleeve can be in advance and horn mouth welded, can before welding, by making frock, guarantee bell-mouthed flange, the concentricity of the circle that inner circle and lobe formula valve plate 6 are spliced into, also can axle with weld again shaft sleeve after bearing pack installs into, can keep gap d as shown in Figure 4.
The installation of axle and bearing is followed general installation rule and is got final product, and it should be noted that, the blower fan that general large scale industry project applies to, and field working conditions is comparatively complicated, may contain more impurity, so the bearing that general Selection of Bearings is double-sealing.
Axle and the connection of carrying out between circle 7 are to connect 3 by contiguous block 2 and bulb ball to complete, and this is the key that realizes our this novel product, and the effect of contiguous block 2 is that the bridge connect between 3 as axle and bulb ball occurs.
In addition, when making the air intake horn mouth, circular-arc bell-mouthed precision is extremely to be difficult to guarantee, so, if deviation occurs at a certain position, when mounted, 4 of the rotatingshafts at this position can deflect away from original preposition to rotatingshaft 4.Now, when contiguous block 2 is installed, can be by adjusting the Conncetion cimension of contiguous block 2 and rotatingshaft 4, the driving while making the installation of last execution circle 7 and operation is stressed on a concentric circle, can avoid so local resistance excessive, to such an extent as to damage parts.
Axle with by a bulb ball, connect 3 after the location of contiguous block 2 completes and complete and carry out the location between circle 7 and axle and be connected, the bulb ball connects 3 the necessary flexibility and reliability of rotation, the CS19-1 bulb ball-joint of take is example, and it turns promotion and firmly is about 20N, is quite flexible in use.
When the utility model is used, first can solve the problem that large-scale dual-gripper industry centrifugal blower can't be installed the register systematic air flow, second can solve before the huge heaviness of old-fashioned lobe type air-valve mechanism, need the problems such as implementation capacity is excessive.
Above explanation is just illustrative for the utility model; and nonrestrictive, those of ordinary skills understand, in the situation that do not break away from the spirit and scope that claim limits; can make many modifications, variation or equivalence, but within all falling into protection domain of the present utility model.