CN102853127B - Flow regulating valve - Google Patents
Flow regulating valve Download PDFInfo
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- CN102853127B CN102853127B CN2011101753194A CN201110175319A CN102853127B CN 102853127 B CN102853127 B CN 102853127B CN 2011101753194 A CN2011101753194 A CN 2011101753194A CN 201110175319 A CN201110175319 A CN 201110175319A CN 102853127 B CN102853127 B CN 102853127B
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Abstract
The invention discloses a flow regulating valve which comprises a valve seat (1) and a shell (2). A motor (21) is arranged inside the shell (2), an output shaft of the motor (21) is connected with a screw rod (3) which is connected with a nut (4), the nut (4) is connected with a valve stem (5), a gear system (22) is supported on a gear seat (6), and the nut (4) is axially and circumferentially limited and connected in an inner cavity of the valve stem (5). The gear seat (6) is provided with a gear seat limiting portion, and the valve stem (5) is provided with a valve stem limiting portion matching with the gear seat limiting portion, so that the valve stem (5) is circumferentially limited and can axially slide relative to the gear seat (6). By the structural design of the flow regulating valve, on one hand, the axial lengths of the screw rod and the nut can be decreased so as to guarantee coaxial error between the screw rod and the nut to be small; and on the other hand, the height ofa valve body can be decreased while material cost can be further reduced.
Description
Technical field
The present invention relates to the fluid control component technical field, particularly a kind of flow control valve.
Background technique
Flow control valve is the vitals that forms refrigeration system, is another basic element of character of removing in four basic elements of character of refrigeration system outside vaporizer, compressor and the condenser.The working procedure of flow control valve is generally: along with energising or the outage of coil device, needle is regulated the aperture of valve port, thereby regulates the flow of refrigeration agent.In addition, also there is widely application in flow control valve at other fluid control fields such as hydraulic system and oil transportation.
In the prior art, the patent No. is that 200580023202.7 Chinese patent discloses a kind of flow control valve; Particularly, please refer to Fig. 1 and Fig. 2, Fig. 1 is the structural representation of a kind of flow control valve in the prior art, and Fig. 2 is the partial enlarged drawing of flow control valve among Fig. 1.
As shown in Figure 1, the inside of electric machine casing 62 is provided with motor 70, and the lower case 60 of this electric machine casing 62 is connected in the head 48 by screw-thread fit.As shown in Figure 2, valve cell 40 comprises bleed piston 130 (being equivalent to nut), and this bleed piston 130 has internal thread, is used for holding having externally threaded live axle 78 (being equivalent to screw mandrel).This bleed piston 130 is extended long length vertically, and is slidably mounted in the sleeve pipe 146, and this sleeve pipe 146 is installed in the lower case 60.Bleed piston 130 can not circumferentially be rotated by sleeve pipe 146 restrictions, when motor 70 has externally threaded live axle 78 rotation by the gear train driving, because bleed piston 130 can not circumferentially rotate, thereby can only axial motion, and then drive the aperture of valve port on valve cell 40 regulating valve seats 22.Yet flow control valve has following defective in the prior art:
The first, bleed piston 130 need to be fixed in the sleeve pipe 146 of lower case 60, limit it by this sleeve pipe 146 and can not circumferentially rotate, thereby bleed piston 130 need to stretch out enough length from valve cell 40, in order to stretch in this sleeve pipe 146; This kind structural design is so that the live axle 78 that cooperates with bleed piston 130 also has larger length, cause the winding degree of live axle 78 large, coaxality when bleed piston 130 is assembled with live axle 78 is difficult to guarantee, if dress can increase resisting moment partially, even causes live axle 78 stuck;
The second, as indicated above, bleed piston 130 need to be stretched out enough length from valve cell 40, in order to stretch in this sleeve pipe 146, correspondingly, can cause live axle 78 and lower case 60 to have vertically larger length, thereby cause the height of valve body larger, and so that the cost of material increase;
The 3rd, valve cell 40 comprises back part 94, and this back part 94 is connected in the intermediate member 96 by screw-thread fit, thereby bleed piston 130 is carried out axial limiting; As shown in Figure 2, because little valve port 120b need to be closed or open to bleed piston 130, thereby bleed piston 130 can not rock diametrically, that is bleed piston 130 is very close to each other diametrically with back part 94 or intermediate member 96, otherwise can affect the sealability of the little valve port 120b of sealing.The processing of each component of valve body and assembling can bring larger coaxiality error, so that have larger coaxiality error between live axle 78 and the bleed piston 130, owing to bleed piston 130 can not radially shake, thereby are easy to cause live axle 78 stuck;
The 4th, back part 94 and intermediate member 96 are connected by screw-thread fit, along with bleed piston 130 and valve cell 40 in the process of vertically motion, screw-thread fit occurs loosening easily, the reliability that causes bleed piston 130 is carried out axially locating is lower.
In view of this, how flow control valve in the prior art is made improvements, thereby can reduce the axial length of screw mandrel and nut on the one hand, thereby guarantee the coaxiality error between the two; Can save cost of material on the other hand, be the problem that those skilled in the art need solution badly.
Summary of the invention
The technical problem to be solved in the present invention is for providing a kind of flow control valve, and the structural design of this flow control valve can reduce the axial length of screw mandrel and nut on the one hand, thereby guarantees the coaxiality error between the two; The height of valve body can be reduced on the other hand, cost of material can be further reduced simultaneously.
For solving the problems of the technologies described above, the invention provides a kind of flow control valve, comprise valve seat and be connected in housing on the valve seat; The inside of described housing is provided with motor, and the output shaft of described motor is connected with screw mandrel by gear train, and described screw mandrel is connected with nut by screw-thread fit, and described nut is connected with valve rod, and described valve rod is the aperture of the valve port on the described valve seat of motor adjustment vertically; Described gear train is supported on the pinion stand; Described nut is along the axial and circumferential directions all in the spacing inner chamber that is connected in described valve rod; Described pinion stand is provided with the pinion stand limited part, and described valve rod is provided with the valve stem spacing section that cooperates with described pinion stand limited part, so as described valve rod with respect to described pinion stand along circumferentially spacing and vertically slidably.
Preferably, be provided with mounting groove and valve rod stepped part in the inner chamber of described valve rod, described nut is located in the described mounting groove and is supported on the described valve rod stepped part; The top of described valve rod is connected with the axial limiting parts, and described nut is held between described valve rod stepped part and the described axial limiting parts vertically.
Preferably, the inwall of described mounting groove is provided with annular spacing groove, offers the first nut stepped part on the circumferential side wall of described nut; Described axial limiting parts are installed in the described annular spacing groove, and are supported on described the first nut stepped part.
Preferably, described axial limiting parts comprise collar and ring washer; Described ring washer is supported on described the first nut stepped part along circumferentially being set with, and described collar is installed in the described annular spacing groove and by described ring washer and is supported on described the first nut stepped part.
Preferably, the lower end surface of described nut is supported on the described valve rod stepped part; The lower end surface of described nut is provided with the first spacing bump, and described valve rod stepped part is provided with the first limited impression that cooperates with the described first spacing bump.
Preferably, described axial limiting parts are the nut that is provided with internal thread, and described nut is located at the outside of described valve rod upper end portion and the upper end portion of the described nut of cap pressure holding of described nut by screw-thread fit.
Preferably, offer the second spacing bump on the outer side wall of described nut, offer the second limited impression that cooperates with the described second spacing bump on the inwall of described mounting groove.
Preferably, described axial limiting parts are for being provided with externally threaded bolt, and described bolt is located in the inner chamber of described valve rod upper end portion by screw-thread fit, and the upper end portion of the described nut of bottom pressure holding of described bolt.
Preferably, further be provided with step surface the second nut stepped part down on the outer side wall of described nut; The inner chamber of described valve rod stepped part forms the mounting groove that described nut is installed, and described the second nut stepped part is supported on the described valve rod stepped part; The inwall of described valve rod stepped part is provided with the 3rd limited impression, and the outer side wall of described nut offers the 3rd spacing bump that cooperates with described the 3rd limited impression.
Preferably, described axial limiting parts are the annular preform that is fixedly connected on described valve rod upper end portion, and the upper end portion of the described nut of lower end surface pressure holding of described annular preform.
Preferably, further be provided with step surface the 3rd nut stepped part down on the outer side wall of described nut; Described nut passes the central through bore of described valve rod stepped part, and is supported on the described valve rod stepped part with its 3rd nut stepped part.
Preferably, described pinion stand limited part is the axial rod of being located on the described pinion stand lower end surface, described valve stem spacing section passes described valve rod stepped part and is opened in axial limiting hole on the described nut, and described axial rod is located in the described axial limiting hole slidably.
Preferably, described valve rod is provided with annular fixed plate, and described annular fixed plate is provided with a plurality of positioning holes; The upper end portion of described nut offers the positioning rod that a plurality of and described positioning hole quantity is identical and the position is corresponding, and described positioning rod passes from bottom to top described positioning hole and riveting is supported on the described annular fixed plate.
Preferably, the further integrated member of described nut and described valve rod.
Preferably, described pinion stand limited part is the non-round special-shaped cavity of being located at the bottom of described pinion stand, and described valve stem spacing section is the special-shaped section of non-circle that is located at the outside, described valve rod upper end portion, and the special-shaped section of described non-circle is located in the described non-round special-shaped cavity vertically slidably.
On the basis of existing technology, the nut of flow control valve provided by the present invention is along the axial and circumferential directions all in the spacing inner chamber that is connected in described valve rod; Described pinion stand is provided with the pinion stand limited part, and described valve rod is provided with the valve stem spacing section that cooperates with described pinion stand limited part, so as described valve rod with respect to described pinion stand along circumferentially spacing and vertically slidably.
Because valve rod integral body is with respect to the circumferentially spacing and vertically slip of pinion stand edge, and nut along the axial and circumferential directions all in the spacing inner chamber that is connected in valve rod simultaneously, thereby along with screw mandrel rotates, nut can be with ovable valve stem to slide vertically, thereby realizes the purpose of valve rod adjusting valve port opening.
In the present invention, directly valve rod integral body is carried out circumferentially spacing by pinion stand, simultaneously so that nut along the axial and circumferential directions all in the spacing inner chamber that is connected in valve rod, rather than directly nut is carried out circumferentially spacing, thereby nut needn't stretch out from valve rod, can be built in the inner chamber of valve rod, thereby can significantly reduce the axial length of nut, and then can significantly reduce the length of screw mandrel, reduce its winding degree, and then the coaxiality error can be easy to guarantee screw mandrel and nut assembling the time, avoid screw mandrel stuck.
In addition, because the length of screw mandrel and nut significantly reduces, thereby also can save cost of material.Simultaneously, by pinion stand valve rod is carried out circumferentially spacingly, simultaneously nut is built in the inner chamber of valve rod, thereby can reduce the height of valve body, can further save cost of material simultaneously.
In sum, flow control valve provided by the present invention can reduce the axial length of screw mandrel and nut on the one hand, thereby guarantees the coaxiality error between the two; The height of valve body can be reduced on the other hand, cost of material can be further reduced simultaneously.
Description of drawings
Fig. 1 is the structural representation of a kind of flow control valve in the prior art;
Fig. 2 is the partial enlarged drawing of flow control valve among Fig. 1;
Fig. 3 is the structural representation of flow control valve among the first embodiment of the present invention;
Fig. 4 is the structural representation of the valve rod of flow control valve among Fig. 3;
Fig. 4-1 is the sectional view of valve rod among Fig. 4;
Fig. 4-2 is the explosive view of valve rod among Fig. 4-1;
Fig. 4-3 is the partial enlarged drawing at the A position of valve rod among Fig. 4-1;
Fig. 5 is the structural representation of valve rod among the second embodiment of the present invention;
Fig. 5-1 is the sectional view of valve rod among Fig. 5;
Fig. 6 is the structural representation of valve rod among the third embodiment of the present invention;
Fig. 6-1 is the sectional view of valve rod among Fig. 6;
The explosive view of valve rod among Fig. 6-2 Fig. 6;
Fig. 7 is the structural representation of valve rod among the 4th kind of embodiment of the present invention;
Fig. 7-1 is the sectional view of valve rod among Fig. 7;
The explosive view of valve rod among Fig. 7-2 Fig. 7;
Fig. 8 is the structural representation of valve rod among the 5th kind of embodiment of the present invention;
Fig. 8-1 is the sectional view of valve rod among Fig. 8;
The explosive view of valve rod among Fig. 8-2 Fig. 8;
Fig. 9 is the structural representation of valve rod among the 6th kind of embodiment of the present invention;
Fig. 9-1 is the sectional view of valve rod among Fig. 9;
Figure 10 is the structural representation of the pinion stand that cooperates with valve rod among Fig. 4, Fig. 5, Fig. 6, Fig. 8 and Fig. 9.
Wherein, the corresponding relation between reference character and the component names is among Fig. 1 and Fig. 2:
62 electric machine casings; 70 motors; 48 heads; 40 valve cells; 130 bleed piston; 78 live axles; 146 sleeve pipes; 60 lower case; 22 valve seats; 94 back parts; 96 intermediate members; The little valve port of 120b.
Corresponding relation among Fig. 3 to Figure 10 between reference character and the component names is:
1 valve seat; 11 upper valve bases; 12 lower valve bases; 13 sleeves;
2 housings; 21 motors; 22 gear trains;
3 screw mandrels;
4 nuts; 41 first nut stepped part; 42 first spacing bumps; 43 second spacing bumps; 44 second nut stepped part; 45 the 3rd spacing bumps; 46 the 3rd nut stepped part; 47 positioning rods;
5 valve rods; 51 mounting grooves; 52 annular spacing grooves; 531 collars; 532 ring washers; 533 nuts; 534 bolts; 535 annular preform; 54 valve rod stepped part; 541 first limited impressions; 542 second limited impressions; 543 the 3rd limited impressions;
55 axial limiting holes; 56 annular fixed plates; 561 positioning holes; The special-shaped section of 57 non-circles;
6 pinion stands; 61 axial rod; 62 non-round special-shaped cavities.
Embodiment
Core of the present invention is for providing a kind of flow control valve, and the structural design of this flow control valve can reduce the axial length of screw mandrel and nut on the one hand, thereby guarantees the coaxiality error between the two; The height of valve body can be reduced on the other hand, cost of material can be further reduced simultaneously.
In order to make those skilled in the art understand better technological scheme of the present invention, the present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Please refer to Fig. 3 to Fig. 4-3, Fig. 3 is the structural representation of flow control valve among the first embodiment of the present invention; Fig. 4 is the structural representation of the valve rod of flow control valve among Fig. 3; Fig. 4-1 is the sectional view of valve rod among Fig. 4; Fig. 4-2 is the explosive view of valve rod among Fig. 4-1; Fig. 4-3 is the partial enlarged drawing at the A position of valve rod among Fig. 4-1.
In basic technology scheme of the present invention, flow control valve comprises valve seat 1 and is connected in housing 2 on the valve seat 1, be provided with motor 21 in the housing 2, the output shaft of motor 21 is in transmission connection with screw mandrel 3 by the gear train 22 that is supported on the pinion stand 6, thereby screw mandrel 3 rotates along with the output shaft of motor 21; Screw mandrel 3 is connected with nut 4 by screw-thread fit, and nut 4 is connected with valve rod 5, and along with the output shaft rotation of motor 21, screw mandrel 3 rotates, and screw mandrel 3 and then band ovable valve stem 5 move vertically, thus the aperture of the valve port on the valve rod regulating valve seat 1.
On the basis of said structure, as shown in Figure 3, nut 4 is along the axial and circumferential directions all in the spacing inner chamber that is connected in valve rod 5; And pinion stand 6 is provided with the pinion stand limited part, and valve rod 5 is provided with the valve stem spacing section that cooperates with described pinion stand limited part, so as valve rod 5 with respect to pinion stand 6 along circumferentially spacing and vertically slidably.
Because valve rod 5 integral body are with respect to the circumferentially spacing and vertically slip of pinion stand 6 edges, and nut 4 along the axial and circumferential directions all in the spacing inner chamber that is connected in valve rod 1 simultaneously, thereby along with screw mandrel 3 rotates, nut 4 can slide by band ovable valve stem 5 vertically, thereby realizes the purpose of valve rod 5 adjusting valve port opening.
In the present invention, directly carry out circumferentially spacing to valve rod 5 integral body by pinion stand 6, simultaneously so that nut 4 along the axial and circumferential directions all in the spacing inner chamber that is connected in valve rod 1, rather than directly carry out circumferentially spacing to nut 4, thereby nut 4 needn't stretch out from valve rod 5, can be built in the inner chamber of valve rod 5, thereby can significantly reduce the axial length of nut 5, and then can significantly reduce the length of screw mandrel 3, reduce its winding degree, and then the coaxiality error can be easy to guarantee screw mandrel 3 with nut 4 assembling the time, avoid screw mandrel 3 stuck.
In addition, because the length of screw mandrel 3 and nut 4 significantly reduces, thereby also can save cost of material.Simultaneously, undertaken circumferentially spacingly by 6 pairs of valve rods of pinion stand 5, simultaneously nut 4 is built in the inner chamber of valve rod 5, thereby can reduce the height of valve body, can further save cost of material simultaneously.
Need to prove; above-mentioned basic technology scheme for nut 4 along the axial and circumferential directions all the spacing concrete structure that is connected in the inner chamber of valve rod 5 be not restricted; as long as any structure can be with nut 4 along the axial and circumferential directions all in the spacing inner chamber that is connected in valve rod 5, just all should be within protection scope of the present invention.
In addition; need to prove; above-mentioned basic technology scheme also is not restricted for the concrete structure of pinion stand limited part and valve stem spacing section; the structure of any pinion stand limited part and valve stem spacing section; if can so that valve rod 5 with respect to pinion stand 6 along circumferentially spacing fixing and vertically slidably, just should be within protection scope of the present invention.
Moreover, need to prove that as shown in Figure 3, valve seat 1 can be Split type structure, comprises upper valve base 11, lower valve base 12 and sleeve 13; But among the present invention, the structure of valve seat 1 is not limited to this, and valve seat 1 can integrated member, that is upper valve base 11, lower valve base 12 and the integrated member of sleeve 13 threes; Can also upper valve base 11 and lower valve base 12 integrated members, and then form valve seats 1 with sleeve 13, this present invention all is not restricted.
In above-mentioned basic technology scheme, can make specific design to the axial limit structure of nut 4.Such as, shown in Fig. 4-1 and Fig. 4-2, being provided with mounting groove 51 and valve rod stepped part 54 in the inner chamber of valve rod 5, nut 4 is located in the mounting groove 51 and is supported on the valve rod stepped part 54; The top of valve rod 5 is connected with the axial limiting parts, and nut 4 is held between valve rod stepped part 54 and the described axial limiting parts vertically.This kind structural design can be carried out axial limiting to nut 4 comparatively easily.
On the basis of above-mentioned basic technology scheme, can make further improvement, thereby obtain the first embodiment of the present invention.Particularly, please also refer to Fig. 4, Fig. 4-1, Fig. 4-2 and Fig. 4-3, the inwall of mounting groove 51 is provided with annular spacing groove 52, offers the first nut stepped part 41 on the circumferential side wall of nut 4; Described axial limiting parts are installed in the annular spacing groove 52, and are supported on the first nut stepped part 41.
Further, these axial limiting parts 53 comprise collar 531, and collar 531 is installed in the annular spacing groove 52 and is supported on the first nut stepped part 41, have the gap between the corresponding sidewall of the inwall of collar 531 and nut 4.Shown in Fig. 4-2, collar 531 is open architecture, makes its stressed shrinking, thereby can be installed in easily in the annular spacing groove 52, after placing annular spacing groove 52, collar 531 restores to the original state again, thereby further suit is supported on the first nut stepped part 41.This kind structural design has realized the axial limiting to nut 4 easily, and simple in structure, and cost is lower.
Further, shown in Fig. 4-1, Fig. 4-2 and Fig. 4-3, axial limiting parts 53 can also comprise ring washer 532, and ring washer 532 is supported on the first nut stepped part 41 along circumferential suit, and have the gap between sidewall corresponding to its inwall and nut 4; Collar 531 further is supported on the first nut stepped part 41 by ring washer 532.Jointly had an effect by collar 531 and ring washer 532, this kind structural design can further improve the reliability of nut 4 being carried out axial limiting.
In addition, shown in Fig. 4-3, have gap a between sidewall corresponding to the inwall of ring washer 532 and nut 4, have gap b between the sidewall of the inwall of mounting groove 51 and corresponding nut 4 simultaneously, existence can be so that nut 4 rocks in the radially little gap of mounting groove 51 interior generations in the time of this two gaps; In addition, shown in Fig. 4-3, also have gap c between the sidewall of the inwall of collar 531 and corresponding ring washer 532, the structure of this gap c can make things convenient for collar 531 to be installed in the annular spacing groove 52.
In sum, the structural design of collar 531 and ring washer 532 can realize easily that on the one hand the radially little gap of nut 4 rocks, and can further improve the reliability of nut 4 being carried out axial limiting on the other hand.
Further, shown in Fig. 4-1, the lower end surface of nut 4 is supported on the valve rod stepped part 54; On this basis, shown in Fig. 4-2, the lower end surface of nut 4 is provided with the first spacing bump 42, and valve rod stepped part 54 is provided with the first limited impression 541 that cooperates with the first spacing bump 42.This kind structural design has realized circumferentially spacing to nut 4 easily, and relatively simple for structure, and manufacture cost is lower.
On the basis of above-mentioned basic technology scheme, can also make further improvement, thereby obtain the second embodiment of the present invention; Particularly, please refer to Fig. 5 and Fig. 5-1, Fig. 5 is the structural representation of valve rod among the second embodiment of the present invention; Fig. 5-1 is the sectional view of valve rod among Fig. 5.
In the second embodiment, shown in Fig. 5-1, described axial limiting parts are the nut 533 that is provided with internal thread, and the upper end portion of valve rod 5 is provided with outside thread, nut 533 is located at the outside of valve rod 5 upper end portions and the upper end portion of the cap pressure holding nut 4 of nut 533 by screw-thread fit.In this kind structural design, the cap of nut 533 and valve rod stepped part 54 clamping nuts 4, thus nut 4 is carried out axial limiting; Simultaneously, owing to be screw-thread fit between nut 533 and valve rod 5 upper end portions, be easy to dismounting, thereby when nut 4 damages, conveniently replaced nut 4.
In addition, shown in Fig. 5 and Fig. 5-1, offer the second spacing bump 43 on the outer side wall of nut 4, offer the second limited impression 542 that cooperates with the second spacing bump 43 on the inwall of mounting groove 51.This kind structural design has also realized circumferentially spacing to nut 4 easily, and relatively simple for structure, and manufacture cost is lower.
On the basis of above-mentioned basic technology scheme, can also make further improvement, thereby obtain the third embodiment of the present invention.Particularly, please refer to Fig. 6, Fig. 6-1 and Fig. 6-2, Fig. 6 is the structural representation of valve rod among the third embodiment of the present invention; Fig. 6-1 is the sectional view of valve rod among Fig. 6; The explosive view of valve rod among Fig. 6-2 Fig. 6.
In this third embodiment, shown in Fig. 6-1 and Fig. 6-2, described axial limiting parts are for being provided with externally threaded bolt 534, and bolt 534 is located in the inner chamber of valve rod 5 upper end portions by screw-thread fit, and the upper end portion of the bottom pressure holding nut 4 of bolt 534.In this structural design, nut 4 is held between bolt 534 and the valve rod stepped part 54, thereby nut 4 is carried out axial limiting; Simultaneously, owing to be screw-thread fit between bolt 534 and valve rod 5 upper end portions, be easy to dismounting, thereby when nut 4 damages, conveniently replaced nut 4.
In addition, shown in Fig. 6-1 and Fig. 6-2, further be provided with step surface the second nut stepped part 44 down on the outer side wall of nut 4, the inner chamber of valve rod stepped part 54 forms the mounting groove 51 of mounting nuts 4, and the second nut stepped part 44 is supported on the valve rod stepped part 54; On this basis, the inwall of valve rod stepped part 54 is provided with the 3rd limited impression 543, and the outer side wall of nut 4 offers the 3rd spacing bump 45 that cooperates with the 3rd limited impression 543.Obviously, this kind structural design has also realized circumferentially spacing to nut 4 easily, and relatively simple for structure, and manufacture cost is lower.
On the basis of above-mentioned basic technology scheme, can also make further improvement, thereby obtain the 4th kind of embodiment of the present invention.Particularly, please refer to Fig. 7, Fig. 7-1 and Fig. 7-2, Fig. 7 is the structural representation of valve rod among the 4th kind of embodiment of the present invention; Fig. 7-1 is the sectional view of valve rod among Fig. 7; The explosive view of valve rod among Fig. 7-2 Fig. 7.
In the 4th kind of embodiment, shown in Fig. 7-1 and Fig. 7-2, described axial limiting parts are the annular preform 535 that is fixedly connected on valve rod 5 upper end portions, and the upper end portion of the lower end surface pressure holding nut 4 of annular preform 535.In this structural design, nut 4 is held between annular preform 535 and the valve rod stepped part 54, thereby nut 4 is carried out axial limiting.Particularly, shown in Fig. 7-2, further be provided with step surface the 3rd nut stepped part 46 down on the outer side wall of nut 4; Nut 4 passes the central through bore of valve rod stepped part 54, and is supported on the valve rod stepped part 54 with its 3rd nut stepped part 46.That is the 3rd nut stepped part 46 is held between annular preform 535 and the valve rod stepped part 54, thereby realizes nut 4 is carried out axial limiting.
In addition, in this kind embodiment, can also make specific design to pinion stand limited part and valve stem spacing section.Such as, described pinion stand limited part is the axial rod 61 of being located on pinion stand 6 lower end surfaces, and described valve stem spacing section passes valve rod stepped part 54 and is opened in axial limiting hole 55 on the nut 4, and axial rod 61 is located in the axial limiting hole 55 slidably.When axial rod 61 was circle, the quantity in axial rod 61 and axial limiting hole 55 all was at least two.Certainly, when axial rod 61 and axial limiting hole 55 were non-round profile bars and non-circular hole, the quantity in axial rod 61 and axial limiting hole 55 can be one.
On the basis of above-mentioned basic technology scheme, can also make further improvement, thereby obtain the 5th kind of embodiment of the present invention.Particularly, please refer to Fig. 8, Fig. 8-1 and Fig. 8-2, Fig. 8 is the structural representation of valve rod among the 5th kind of embodiment of the present invention; Fig. 8-1 is the sectional view of valve rod among Fig. 8; The explosive view of valve rod among Fig. 8-2 Fig. 8.
In the 5th kind of embodiment, shown in Fig. 8, Fig. 8-1 and Fig. 8-2, be provided with annular fixed plate 56 in the inner chamber of valve rod 5, annular fixed plate 56 is provided with a plurality of positioning holes 561; The upper end portion of nut 4 offers a plurality of and positioning rods 47 that position corresponding identical with positioning hole 561 quantity, and positioning rod 47 passes positioning hole 561 from bottom to top and riveting is supported on the annular fixed plate 56.During assembling, nut 4 is packed in the inner chamber of valve rod 5 by the lower end of valve rod 5, and so that the positioning rod 47 of nut 4 upper end portions stretched out by the positioning hole 561 on the annular fixed plate 56, then to positioning rod 47 rivetings, make its stress deformation, so that the area of its cross section is greater than the area of positioning hole 561, thereby be supported on the annular fixed plate 56.Obviously, this kind structural design has realized the circumferential spacing and axial limiting to nut 4 simultaneously, thereby with respect to front four kinds of embodiments' fixed structure, further simplified structure cuts down finished cost.
On the basis of above-mentioned basic technology scheme, can also make further improvement, thereby obtain the 6th kind of embodiment of the present invention.Particularly, please refer to Fig. 9 and Fig. 9-1, Fig. 9 is the structural representation of valve rod among the 6th kind of embodiment of the present invention; Fig. 9-1 is the sectional view of valve rod among Fig. 9.
In the 6th kind of embodiment, shown in Fig. 9-1, nut 4 and valve rod 5 further integrated members.Inside at valve rod 5 processes step, then processes internal thread at this step, thereby forms nut 4.Valve rod 5 can form by injection moulding, and also can get on the bus at the thicker pipe of wall thickness is processed to form.This kind structural design is simplified structure further, cuts down finished cost.
Please refer to Figure 10, Figure 10 is the structural representation of the pinion stand that cooperates with valve rod among Fig. 4, Fig. 5, Fig. 6, Fig. 8 and Fig. 9.
Such as Fig. 4, Fig. 5, Fig. 6, Fig. 8 and shown in Figure 9, described valve stem spacing section is the special-shaped section 57 of non-circle that is located at the outside, valve rod 5 upper end portions, and in Fig. 5, the external frame of nut 533 forms the special-shaped section 57 of this non-circle; As shown in figure 10, described pinion stand limited part is the non-round special-shaped cavity 62 of being located at the bottom of pinion stand 6, and the special-shaped section 57 of non-circle is located in the non-round special-shaped cavity 62 vertically slidably.
Need to prove that the special-shaped section 57 of non-round special-shaped cavity 62 and non-circle is Hexagon, but be not limited to this; Any non-circular shape rotates with respect to pinion stand 6 as long as can limit valve rod 5, just should be within protection scope of the present invention.
More than a kind of flow control valve provided by the present invention is described in detail.Used specific case herein principle of the present invention and mode of execution are set forth, above embodiment's explanation just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (15)
1. flow control valve comprises valve seat (1) and is connected in housing (2) on the valve seat (1); The inside of described housing (2) is provided with motor (21), the output shaft of described motor (21) is connected with screw mandrel (3) by gear train (22), described screw mandrel (3) is connected with nut (4) by screw-thread fit, described nut (4) is connected with valve rod (5), and described valve rod (5) is the aperture of the valve port on the described valve seat of motor adjustment (1) vertically; Described gear train (22) is supported on the pinion stand (6); It is characterized in that described nut (4) is along the axial and circumferential directions all in the spacing inner chamber that is connected in described valve rod (5); Described pinion stand (6) is provided with the pinion stand limited part, and described valve rod (5) is provided with the valve stem spacing section that cooperates with described pinion stand limited part, so as described valve rod (5) with respect to described pinion stand (6) along circumferentially spacing and vertically slidably.
2. flow control valve as claimed in claim 1, it is characterized in that, be provided with mounting groove (51) and valve rod stepped part (54) in the inner chamber of described valve rod (5), described nut (4) is located in the described mounting groove (51) and is supported on the described valve rod stepped part (54); The top of described valve rod (5) is connected with the axial limiting parts, and described nut (4) is held between described valve rod stepped part (54) and the described axial limiting parts vertically.
3. flow control valve as claimed in claim 2 is characterized in that, the inwall of described mounting groove (51) is provided with annular spacing groove (52), offers the first nut stepped part (41) on the circumferential side wall of described nut (4); Described axial limiting parts are installed in the described annular spacing groove (52), and are supported on described the first nut stepped part (41).
4. flow control valve as claimed in claim 3 is characterized in that, described axial limiting parts comprise collar (531) and ring washer (532); Described ring washer (532) is supported on described the first nut stepped part (41) along circumferentially being set with, and described collar (531) is installed in the described annular spacing groove (52) and is supported on described the first nut stepped part (41) by described ring washer (532).
5. such as claim 3 or 4 described flow control valves, it is characterized in that the lower end surface of described nut (4) is supported on the described valve rod stepped part (54); The lower end surface of described nut (4) is provided with the first spacing bump (42), and described valve rod stepped part (54) is provided with the first limited impression (541) that cooperates with the described first spacing bump (42).
6. flow control valve as claimed in claim 2, it is characterized in that, described axial limiting parts are the nut (533) that is provided with internal thread, described nut (533) is located at the outside of described valve rod (5) upper end portion and the upper end portion of the described nut of cap pressure holding (4) of described nut (533) by screw-thread fit.
7. flow control valve as claimed in claim 6, it is characterized in that, offer the second spacing bump (43) on the outer side wall of described nut (4), offer the second limited impression (542) that cooperates with the described second spacing bump (43) on the inwall of described mounting groove (51).
8. flow control valve as claimed in claim 2, it is characterized in that, described axial limiting parts are for being provided with externally threaded bolt (534), described bolt (534) is located in the inner chamber of described valve rod (5) upper end portion by screw-thread fit, and the upper end portion of the described nut of bottom pressure holding (4) of described bolt (534).
9. flow control valve as claimed in claim 8 is characterized in that, further is provided with step surface the second nut stepped part (44) down on the outer side wall of described nut (4); The inner chamber of described valve rod stepped part (54) forms the mounting groove (51) that described nut (4) is installed, and described the second nut stepped part (44) is supported on the described valve rod stepped part (54); The inwall of described valve rod stepped part (54) is provided with the 3rd limited impression (543), and the outer side wall of described nut (4) offers the 3rd spacing bump (45) that cooperates with described the 3rd limited impression (543).
10. flow control valve as claimed in claim 2, it is characterized in that, described axial limiting parts are the annular preform (535) that is fixedly connected on described valve rod (5) upper end portion, and the upper end portion of the described nut of lower end surface pressure holding (4) of described annular preform (535).
11. flow control valve as claimed in claim 2 is characterized in that, further is provided with step surface the 3rd nut stepped part (46) down on the outer side wall of described nut (4); Described nut (4) passes the central through bore of described valve rod stepped part (54), and is supported on the described valve rod stepped part (54) with its 3rd nut stepped part (46).
12. flow control valve as claimed in claim 11, it is characterized in that, described pinion stand limited part is for being located at the axial rod (61) on described pinion stand (6) lower end surface, described valve stem spacing section is for passing described valve rod stepped part (54) and being opened in axial limiting hole (55) on the described nut (4), and described axial rod (61) is located in the described axial limiting hole (55) slidably.
13. flow control valve as claimed in claim 1 is characterized in that, described valve rod (5) is provided with annular fixed plate (56), and described annular fixed plate (56) is provided with a plurality of positioning holes (561); The upper end portion of described nut (4) offers the positioning rod (47) that a plurality of and described positioning hole (561) quantity is identical and the position is corresponding, and described positioning rod (47) passes from bottom to top described positioning hole (561) and riveting is supported on the described annular fixed plate (56).
14. flow control valve as claimed in claim 1 is characterized in that, described nut (4) and the further integrated member of described valve rod (5).
15. such as claim 1,2,3,4,6,7,8,9,13 or 14 described flow control valves, it is characterized in that, described pinion stand limited part is the non-round special-shaped cavity (62) of being located at the bottom of described pinion stand (6), described valve stem spacing section is for being located at the special-shaped section of non-circle (57) outside described valve rod (5) upper end portion, and the special-shaped section of described non-circle (57) is located in the described non-round special-shaped cavity (62) vertically slidably.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101753194A CN102853127B (en) | 2011-06-27 | 2011-06-27 | Flow regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101753194A CN102853127B (en) | 2011-06-27 | 2011-06-27 | Flow regulating valve |
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| Publication Number | Publication Date |
|---|---|
| CN102853127A CN102853127A (en) | 2013-01-02 |
| CN102853127B true CN102853127B (en) | 2013-10-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101753194A Active CN102853127B (en) | 2011-06-27 | 2011-06-27 | Flow regulating valve |
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| Country | Link |
|---|---|
| CN (1) | CN102853127B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1377349A (en) * | 1972-06-19 | 1974-12-11 | Deutsche Vergaser Gmbh Co Kg | Fluid flow control valves |
| CN2849359Y (en) * | 2005-10-28 | 2006-12-20 | 天津精通控制仪表技术有限公司 | High performance cage regulating valve |
| CN101292106A (en) * | 2005-10-18 | 2008-10-22 | 株式会社山武 | Cage valve |
| CN201705971U (en) * | 2010-06-13 | 2011-01-12 | 无锡智能自控工程有限公司 | Large caliber sleeve valve provided with anti-rotation structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4240584B2 (en) * | 1998-06-02 | 2009-03-18 | パロマ工業株式会社 | Gas valve device |
-
2011
- 2011-06-27 CN CN2011101753194A patent/CN102853127B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1377349A (en) * | 1972-06-19 | 1974-12-11 | Deutsche Vergaser Gmbh Co Kg | Fluid flow control valves |
| CN101292106A (en) * | 2005-10-18 | 2008-10-22 | 株式会社山武 | Cage valve |
| CN2849359Y (en) * | 2005-10-28 | 2006-12-20 | 天津精通控制仪表技术有限公司 | High performance cage regulating valve |
| CN201705971U (en) * | 2010-06-13 | 2011-01-12 | 无锡智能自控工程有限公司 | Large caliber sleeve valve provided with anti-rotation structure |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平11-344139A 1999.12.14 |
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| CN102853127A (en) | 2013-01-02 |
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