CN201246516Y

CN201246516Y - Valve pneumatic executor

Info

Publication number: CN201246516Y
Application number: CNU2008200040136U
Authority: CN
Inventors: 周志意
Original assignee: CHONGQING XIONGTIAN MACHINERY EQUIPMENT Co Ltd
Current assignee: NINGBO JIANGBEI NEW XIN PETROCHENICAL MACHINERY EQUIPMENT CO., LTD.
Priority date: 2008-02-02
Filing date: 2008-02-02
Publication date: 2009-05-27
Anticipated expiration: 2018-02-02

Abstract

Disclosed is a valve pneumatic actuator relating to a pneumatic control device, in particular to a pneumatic control actuator, which comprises a speed reduction mechanism and an inner curved motor structure, wherein the speed reduction mechanism comprises a speed-reducing gearbox (16), an inner gear ring (15), a planetary carrier (18), a planetary gear (17) and a small shaft (19), the inner curved motor mechanism is composed of a hollow spindle (1), an upper end cover (2), a hand wheel (3), a bearing block (4), an outer air distribution mechanism, an inner air distribution mechanism, a motor top cover, a T-shaped crossbeam, three sets of cylinders, six pistons, an upper disc chuck and a lower disc chuck, and further the inner curved motor mechanism, the outer air distribution mechanism, the inner air distribution mechanism form an inner curved pneumatic motor actuator. The pneumatic control actuator has the advantages of fine manufacturability, compact structure, convenient mounting, simple and easy maintenance, light overall weight, manual operation without resistance, simple and convenient operation, flexibility, safety and reliability, high pneumatic starting efficiency, stable rotating speed, large torque and the like.

Description

A kind of valve pneumatic actuator

Technical field:

The utility model relates to air control unit, is specifically related to a kind of pneumatic control actuating device.

Background technique:

The existing pneumatic valve final controlling element in market generally exists following problem technology capability relatively poor, and it is not compact to have following shortcoming structure, and complexity is installed, and maintenance is complicated, and overall weight is heavy; China's utility model patent 96235310.8, this technology mainly exists following shortcoming to be: one, the distribution of the pneumatic motor of Pneumatic gate valve partly adopts screw to prop up the way generation top power on top, such design shortcoming is that 1 on-the-spot vibration is bigger, long-time vibration can make jackscrew loosening, does not have the effect of jackscrew.2 on-the-spot corrosivity are strong, and jackscrew is easy and the bearing seat rust is dead, dismantles cumbersome.3 jackscrews upper end is exposed outside, to comparatively ugly on the product appearance.Two, the crossbeam of pneumatic motor inside is a solid beam, and such shortcoming is to make the comparison heaviness of this pneumatic motor change, is installed in and breaks valve rack on the valve body easily.Three, the planet carrier center hole is a thread, only singly joins a kind of valve rod of valve, and the onsite user must survey and draw when requiring to change valve again, the waste installation time.Not quick detachable when four, piston is the solid piston installation and maintenance, because a pneumatic motor uses many group pistons, so the heaviness more that allows this product become.

The model utility content:

The purpose of this utility model provides a kind of valve pneumatic actuator, it can solve the problem that background technique exists, and it is better that it has technology capability, compact structure, easy for installation, easy row easy to maintenance, overall weight is light, non-resistance in the time of manually, simple to operation, lightly flexible, safe and reliable, cranking performance rating height when pneumatic, advantage such as rotating speed is steady, and torsional moment is big.

In order to solve the existing problem of background technique, the utility model is by the following technical solutions: it is by hollow main shaft 1, lock nut 2, handwheel 3, bearing support 4, outer distribution device 5, interior distribution device 6, motor loam cake 7, T-shape crossbeam 8, three groups of cylinders 9, six pistons 10, last floral disc 11, following floral disc 12, motor case 13, motor lower cover 14, ring gear 15, deceleration box 16, planetary pinion 17, planet carrier 18, little axle 19, following three-jaw 20, bearing 21 is formed deceleration box 16, ring gear 15, planet carrier 18, planetary pinion 17 and little axle 19 are formed reducing gear; Hollow main shaft 1, lock nut 2, handwheel 3, bearing support 4, outer distribution device 5, interior distribution device 6, motor loam cake 7, T-shape crossbeam 8, three groups of cylinders 9, six pistons 10, go up floral disc 11, floral disc 12 is formed the inner curve motor structures down; Inner curve motor mechanism and outer distribution device 5, interior distribution device 6 are formed inner curve pneumatic motor final controlling element; The reducing gear of pneumatic valve final controlling element links to each other with inner curve pneumatic motor mechanism, hollow main shaft 1 links to each other with planetray reducer 17, hollow main shaft 1 is provided with radially cylinder 9 of three groups of coaxial combination, radially are furnished with six pistons 10 in the cylinder 9, be provided with floral disc 11, following floral disc 12 at three groups of cylinder 9 two ends, distribution device 6 outside on cylinder 9 upper ends, being provided with above the floral disc 11; The piston 10 of every group of cylinder 9 is over against a T-shape crossbeam 8, and T-shape crossbeam 8 two ends are respectively equipped with bearing 21, also is provided with manual handwheel 3 in the upper end of inner curve motor hollow main shaft 1, and valve rod passes planet carrier 18 center holes and hollow main shaft 1 center hole.Bearing can be along the inner curve orbiting that is fixed on motor upper cover body 7, lower cover 14, the inner curve track has four acting sections, source of the gas footpath gas source interface is by the effect of outer distribution device 5, interior distribution device 6, pressure enters every group of radially cylinder 9 active chambers successively, promoting piston 10 stretches out, piston 10 promotes main shaft diameter to T-shape crossbeam 8, make bearing 21 along the inner curve orbiting, thereby hollow main shaft 1 is rotated, if change the gas source interface of outer distribution device 5, interior distribution device 6, then change the sense of rotation of hollow main shaft 1, valve rod is then done reversing motion; Then only need to rotate handwheel 3 in the time of manually, the reducing gear that handwheel 3 and hollow main shaft 1 deceleration box 16, ring gear 15, planet carrier 18, planetary pinion 17 and little axle 19 are formed drives the valve rod moving linearly.It is better to the utlity model has technology capability, compact structure, easy for installation, easy row easy to maintenance, overall weight is light, non-resistance in the time of manually, simple to operation, lightly flexible, safe and reliable, cranking performance rating height when pneumatic, rotating speed is steady, torsional moment is big, and the material of cylinder is an aluminium, difficult generation advantage such as expand with heat and contract with cold.

Description of drawings:

Fig. 1 is a structural representation of the present utility model, Fig. 2 be the A-A of Fig. 1 to view, Fig. 3 is that the B-B of Fig. 1 is to view.

Embodiment:

Referring to Fig. 1-3 embodiment by hollow main shaft 1, lock nut 2, handwheel 3, bearing support 4, outer distribution device 5, interior distribution device 6, motor loam cake 7, T-shape crossbeam 8, three groups of cylinders 9, six pistons 10, go up floral disc 11, down floral disc 12, motor case 13, motor lower cover 14, ring gear 15, deceleration box 16, planetary pinion 17, planet carrier 18, little axle 19, three-jaw 20, bearing 21 are formed down, deceleration box 16, ring gear 15, planet carrier 18, planetary pinion 17 and little axle 19 composition reducing gears; Hollow main shaft 1, lock nut 2, handwheel 3, bearing support 4, outer distribution device 5, interior distribution device 6, motor loam cake 7, T-shape crossbeam 8, three groups of cylinders 9, six pistons 10, go up floral disc 11, floral disc 12 is formed the inner curve motor structures down; Inner curve motor mechanism and outer distribution device 5, interior distribution device 6 are formed inner curve pneumatic motor final controlling element; The reducing gear of pneumatic valve final controlling element links to each other with inner curve pneumatic motor mechanism, hollow main shaft 1 links to each other with planetray reducer 17, hollow main shaft 1 is provided with radially cylinder 9 of three groups of coaxial combination, radially are furnished with six pistons 10 in the cylinder 9, be provided with floral disc 11, following floral disc 12 at three groups of cylinder 9 two ends, distribution device 6 outside on cylinder 9 upper ends, being provided with above the floral disc 11; The piston 10 of every group of cylinder 9 is over against a T-shape crossbeam 8, and T-shape crossbeam 8 two ends are respectively equipped with bearing 21, also is provided with manual handwheel 3 in the upper end of inner curve motor hollow main shaft 1, and valve rod passes planet carrier 18 center holes and hollow main shaft 1 center hole.Bearing can be along the inner curve orbiting that is fixed on motor upper cover body 7, lower cover 14, the inner curve track has four acting sections, source of the gas footpath gas source interface is by the effect of outer distribution device 5, interior distribution device 6, pressure enters every group of radially cylinder 9 active chambers successively, promoting piston 10 stretches out, " mountain word " piston 10 promotes main shaft diameter to crossbeam 8, make bearing 21 along the inner curve orbiting, thereby hollow main shaft 1 is rotated, if change the gas source interface of outer distribution device 5, interior distribution device 6, then change the sense of rotation of hollow main shaft 1, valve rod is then done reversing motion; Then only need to rotate handwheel 3 in the time of manually, the reducing gear that handwheel 3 and hollow main shaft 1 deceleration box 16, ring gear 15, planet carrier 18, planetary pinion 17 and little axle 19 are formed drives the valve rod moving linearly.The purpose of this embodiment is to design a kind of distribution and partly adopts high elasticity spring roof pressure, and technological requirement is comparatively strict during the spring production and processing.1, it is big to have overcome on-the-spot vibration, is covered by bearing support because spring is installed, and adopts hermetic assembly structure; 2, it is strong to have overcome on-the-spot corrosivity; 3, outward appearance is compact more attractive in appearance.Beam design becomes the T-shape crossbeam, thereby alleviates the weight of pneumatic motor greatly, and plunger designs becomes " mountain " font structure, has alleviated the overall weight of this pneumatic valve final controlling element, thereby makes the more light and handy of pneumatic valve final controlling element change; Planet carrier adopts the hollow structure design equally, and is concentric with hollow main shaft, the valve rod of the multiple valve of convenient pairing, thus overcome above all deficiencys.It is better that this embodiment has technology capability, and compact structure is easy for installation, easy row easy to maintenance, overall weight is light, and non-resistance in the time of manually is simple to operation, lightly flexible, safe and reliable, cranking performance rating height when pneumatic, advantage such as rotating speed is steady, and torsional moment is big.

Claims

1, a kind of valve pneumatic actuator, it is characterized in that it is by hollow main shaft (1), lock nut (2), handwheel (3), bearing support (4), outer distribution device (5), interior distribution device (6), motor loam cake (7), T-shape crossbeam (8), three groups of cylinders (9, six pistons (10), last floral disc (11), following floral disc (12, motor case (13), motor lower cover (14), ring gear (15, deceleration box (16), planetary pinion (17), planet carrier (18), little axle (19), following three-jaw (20), bearing (21) is formed, deceleration box (16), ring gear (15), planet carrier (18), planetary pinion (17) and little axle (19) are formed reducing gear; Hollow main shaft (1), lock nut (2), handwheel (3), bearing support (4), outer distribution device (5), interior distribution device (6), motor loam cake (7), T-shape crossbeam (8), three groups of cylinders (9), six pistons (10), last floral disc (11), following floral disc (12) are formed the inner curve motor structure; Inner curve motor mechanism and outer distribution device (5), interior distribution device (6) are formed inner curve pneumatic motor final controlling element; The reducing gear of pneumatic valve final controlling element links to each other with inner curve pneumatic motor mechanism, hollow main shaft (1) links to each other with planetray reducer (17), hollow main shaft (1) is provided with radially cylinder (9) of three groups of coaxial combination, radially are furnished with six pistons (10) in the cylinder (9), be provided with floral disc (11), following floral disc (12) at three groups of cylinders (9) two ends, distribution device (6) outside on the last floral disc (11) of cylinder (9) upper end, being provided with; The piston (10) of every group of cylinder (9) is over against a T-shape crossbeam (8), T-shape crossbeam (8) two ends are respectively equipped with bearing (21), also be provided with manual handwheel (3) in the upper end of inner curve motor hollow main shaft (1), valve rod passes planet carrier (18) center hole and hollow main shaft (1) center hole.