CN102606528B - Axial flow ventilator capable of synchronously adjusting blades - Google Patents

Abstract

The invention particularly discloses an axial flow ventilator capable of synchronously adjusting blades, and is used for solving the problems of time waste and labor waste during adjustment of mounting angles of the blades of the conventional axial flow ventilator and the problem of influence of unbalance of a blade wheel on the service life of the conventional axial flow ventilator. A push disk is sleeved on a shaft sleeve; a groove is formed on the outer cylindrical surface of the push disk; a crank is arranged in the groove; a worm wheel which is in threaded connection with the push disk is arranged on the right side of the push disk; a supporting seat and a cover plate are arranged on the outer sides of the left end face and the right end face of the worm wheel; a worm support is fixed on the supporting seat; a worm is inserted into the worm support; a balance weight rod is arranged on the other side of the worm; a driving rod is fixed at one end of the worm; the outer end of the driving rod is positioned in a supporting sleeve; a clamping slot is formed on the stair surface of the supporting sleeve; a pin shaft is inserted into a sliding chute hole of the driving rod; a sealing gasket is sleeved on the driving rod; and a spring is arranged between the sealing gasket and the pin shaft. According to the axial flow ventilator, the efficiency of adjusting the mounting angles of the blades is improved, and the consistency of the mounting angles is guaranteed; and the axial flow ventilator has the advantages of simple structure, low cost and convenience in maintenance, and is easy to mount.

Description

Blade synchronization regulates propeller fan

Technical field

The present invention relates to propeller fan, be specially a kind of blade synchronization and regulate propeller fan.

Background technique

Propeller fan, as main fan for mines, has the title of colliery throat equipment, and its life cycle is general more than 10 years; In using process, mine resistance parameter, mine air-required volume may change at any time, and this just need to regulate main fan blade angle to meet mine needs.

At present, main fan for mines blade adjustments mode mainly adopts to shut down tears machine regulative mode piecewise open, adjustment process is as follows: first from impeller section, blower fan is taken apart, then after locking nut, tapered cup nut being unclamped successively with special spanner, rotor blade, tightens tapered cup nut and locking nut successively to needs angle, because of Coal Mine Main Fan running environment condition poor, a lot of situation inferior pyramidal nuts conventionally and blade corrosion be integral, cause adjusting very difficult; And adopt the mode regulating piecewise, and be difficult to guarantee that the established angle of every blade adjustments is the same, therefore can affect impeller balance, cause after adjustment of blade angle, body vibration strengthens, very unfavorable to bearing of motor, affects working life.

Summary of the invention

The present invention is wasted time and energy and easily causes the unbalance problem that affects working life of impeller when solving existing propeller fan adjusting vane established angle, provides a kind of blade synchronization to regulate propeller fan.

The present invention adopts following technological scheme to realize: blade synchronization regulates propeller fan, comprise wheel hub and the axle sleeve coaxial with it, in wheel hub, be installed with some petioles that radially arrange, petiole outer end is all fixed with blade, on axle sleeve, cover has and horizontally slips thereon and the push-plate that stretches out at right side middle part, the external cylindrical surface of push-plate has circumferential groove, in groove, be placed with the hinged crank of the other end and petiole, push-plate right side is provided with the worm gear being enclosed within on axle sleeve, the external cylindrical surface screw-thread fit at place is stretched out at worm gear endoporus and middle part, push-plate right side, end face outside, worm gear left and right is provided with the supporting base fixing with axle sleeve and cover plate, on supporting base, be fixed with worm bearing, in worm bearing, be installed with the worm screw with worm gear engagement, the opposite side in the relative worm gear of worm screw axle center is provided with the weight linear meter being connected with supporting base, and worm screw one end is fixed with driveshaft, the outer end of driveshaft is positioned at the supporting sleeve that is fixed on wheel hub inner side, inside supporting sleeve, for lower diameter, be greater than the step structure of upper diameter, and supporting sleeve ladder surface has draw-in groove, on driveshaft, vertically have slip slotted hole, in slip slotted hole, be installed with the bearing pin being stuck in draw-in groove, and on driveshaft, cover has the seal ring contacting with supporting sleeve lower end inwall, between seal ring and bearing pin, be provided with the spring being enclosed within on driveshaft.

When propeller fan stops operating, open the viewing window on impeller urceolus, by special tool, bearing pin is promoted after certain distance downwards, rotarily actuate bar, drive worm screw to rotate, worm screw drives worm gear rotation, then under the position-limiting action of supporting base and cover plate, rotatablely moving of worm gear is delivered to push-plate and along axle sleeve axial direction, does straight reciprocating motion, and then the crank in drive push-plate groove is around the axis synchronous rotary of blade petiole, guarantee that the angle regulating is in full accord, after blade angle is adjusted to the right place, under the elastic force effect of spring, bearing pin is back into automatically to the draw-in groove position of supporting sleeve, again reach the object of locking-blade, seal ring prevents that corrosive gas and water vapour from entering impeller, improve the antiseptic property of impeller inner components, while having overcome existing propeller fan adjusting vane established angle, waste time and energy and easily cause the unbalance problem that affects working life of impeller.

Petiole outer end is positioned at the petiole sleeve that is fixed on wheel hub inner side, petiole sleeve middle inside is provided with protruding ring, and in petiole sleeve, be provided with the tapered roller bearing and the thrust-bearing that are enclosed within on petiole and are positioned at the upper and lower both sides of protruding ring, the upper-end surface of tapered roller bearing contacts with the ladder surface on petiole top, and be provided with seal ring between petiole upper portion side wall and petiole sleeve, on the petiole of petiole sleeve below, be screwed with locking nut, between locking nut and thrust-bearing, be provided with and contact and be enclosed within petiolar distance with both and overlap.

Thrust-bearing bears the centrifugal force of vane rotary process Leaf, tapered roller bearing overcomes fan operation Leaf and is subject to radial force and the moment of flexure that air pressure causes petiole, locking nut is pressed on petiole on petiole sleeve by thrust-bearing and tapered roller bearing, guaranteed that petiole can only rotate freely around axis, and can not produce axial displacement, O RunddichtringO has completely cut off gas in blower fan inner flow passage and has entered petiole sleeve bearing part, improve the sealability of impeller inside, extend the working life of impeller.

Reasonable in design of the present invention is reliable, has realized the requirement of continuous stepless synchronization regulation blade angle by the big speed ratio of worm-and-wheel gear; Between worm gear and push-plate, be threaded connection and when thering is deceleration, labour-saving advantage, play extraordinary anti-loosing effect; Space circular movement is done in crank lower end in groove, well retrains when crank can move in a circle along setting scheme and does not interfere with push-plate; Improve the conformity that has guaranteed established angle when blade angle regulates efficiency, after adjusting, impeller can be not unbalance, vibrate littlely, extends working life of motor, have advantages of simple in structure, cost is low, easily installation and easy to maintenance.

Accompanying drawing explanation

Fig. 1 is structural representation of the present invention;

Fig. 2 is the local schematic side view of Fig. 1;

Fig. 3 is the enlarged diagram of A in Fig. 1.

In figure: 1-wheel hub, 2-axle sleeve, 3-petiole, 4-blade, 5-push-plate, 6-groove, 7-crank, 8-worm gear, 9-supporting base, 10-cover plate, 11-worm bearing, 12-worm screw, 13-weight linear meter, 14-driveshaft, 15-supporting sleeve, 16-slip slotted hole, 17-bearing pin, 18-seal ring, 19-spring, 20-petiole sleeve, 21-protruding ring, 22-tapered roller bearing, 23-thrust-bearing, 24-O RunddichtringO, 25-locking nut, 26-is apart from cover, 27-support ring, 28-guide sleeve.

Embodiment

Blade synchronization regulates propeller fan, comprise wheel hub 1 and the axle sleeve 2 coaxial with it, in wheel hub 1, be installed with some petioles 3 that radially arrange, petiole 3 outer ends are all fixed with blade 4, on axle sleeve 2, cover has and horizontally slips thereon and the push-plate 5 that stretches out at right side middle part, the external cylindrical surface of push-plate 5 has circumferential groove 6, in groove 6, be placed with the hinged crank 7 of the other end and petiole 3, push-plate 5 right sides are provided with the worm gear 8 being enclosed within on axle sleeve 2, the external cylindrical surface screw-thread fit at place is stretched out at worm gear 8 endoporus and push-plate 5 middle parts, right side, worm gear 8 end face outsides, left and right are provided with the supporting base 9 fixing with axle sleeve 2 and cover plate 10, on supporting base 9, be fixed with worm bearing 11, in worm bearing 11, be installed with the worm screw 12 with worm gear 8 engagements, the opposite side in worm screw 12 relative worm gear 8 axle center is provided with the weight linear meter 13 being connected with supporting base 9, and worm screw 12 one end are fixed with driveshaft 14, the outer end of driveshaft 14 is positioned at the supporting sleeve 15 that is fixed on wheel hub 1 inner side, supporting sleeve 15 inner sides are the step structure that lower diameter is greater than upper diameter, and supporting sleeve 15 ladder surfaces have draw-in groove, on driveshaft 14, vertically have slip slotted hole 16, in slip slotted hole 16, be installed with the bearing pin 17 being stuck in draw-in groove, and on driveshaft 17, cover has the seal ring 18 contacting with supporting sleeve 15 lower end inwalls, between seal ring 18 and bearing pin 17, be provided with the spring 19 being enclosed within on driveshaft 14.

Petiole 3 outer ends are positioned at the petiole sleeve 20 that is fixed on wheel hub 1 inner side, petiole sleeve 20 middle inside are provided with protruding ring 21, and in petiole sleeve 20, be provided with the tapered roller bearing 22 and the thrust-bearing 23 that are enclosed within on petiole 3 and are positioned at protruding ring both sides Shang Xia 21, the upper-end surface of tapered roller bearing 22 contacts with the ladder surface on petiole 3 tops, and be provided with O RunddichtringO 24 between petiole 3 upper portion side wall and petiole sleeve 20, on the petiole 3 of petiole sleeve 20 belows, be screwed with locking nut 25, between locking nut 25 and thrust-bearing 23, be provided with the distance cover 26 that contacts and be enclosed within both on petiole 3; On petiole 3, be installed with coaxial with wheel hub 1 and with the fixing support ring 27 of wheel hub 1, on support ring 27, be fixed with the guide sleeve 28 being enclosed within on petiole 3.

In specific implementation process, supporting base 9 is connected by fixing bolt with cover plate 10, then is fixed together by connecting bolt and motor shaft sleeve 2, thereby realizes worm gear 8 when action, the object that can only rotate; On axle sleeve 2, be fixed with the key of axial setting, axially have the guiding groove corresponding with key position on push-plate 5, between worm gear 8 and push-plate 5, the screw thread of engagement has guaranteed that worm gear 8 drives push-plate 5 to do linear reciprocating motion along the axial direction of axle sleeve 2 when rotated.

Claims (1)

1. a blade synchronization regulates propeller fan, comprise wheel hub (1) and the axle sleeve (2) coaxial with it, in wheel hub (1), be installed with some petioles (3) that radially arrange, petiole (3) outer end is all fixed with blade (4), it is characterized in that: the upper cover of axle sleeve (2) has and horizontally slips thereon and the push-plate (5) that stretches out at middle part, right side, the external cylindrical surface of push-plate (5) has circumferential groove (6), in groove (6), be placed with the hinged crank (7) of the other end and petiole (3), push-plate (5) right side is provided with the worm gear (8) being enclosed within on axle sleeve (2), the external cylindrical surface screw-thread fit at place is stretched out at worm gear (8) endoporus and middle part, push-plate (5) right side, end face outside, worm gear (8) left and right is provided with the supporting base (9) fixing with axle sleeve (2) and cover plate (10), on supporting base (9), be fixed with worm bearing (11), in worm bearing (11), be installed with the worm screw (12) with worm gear (8) engagement, worm screw (12) the relatively opposite side in worm gear (8) axle center is provided with the weight linear meter (13) being connected with supporting base (9), and worm screw (12) one end is fixed with driveshaft (14), the outer end of driveshaft (14) is positioned at the supporting sleeve (15) that is fixed on wheel hub (1) inner side, inside supporting sleeve (15), for lower diameter, be greater than the step structure of upper diameter, and supporting sleeve (15) ladder surface has draw-in groove, on driveshaft (14), vertically have slip slotted hole (16), in slip slotted hole (16), be installed with the bearing pin (17) being stuck in draw-in groove, and the upper cover of driveshaft (17) has the seal ring (18) contacting with supporting sleeve (15) lower end inwall, between seal ring (18) and bearing pin (17), be provided with the spring (19) being enclosed within on driveshaft (14), petiole (3) outer end is positioned at the petiole sleeve (20) that is fixed on wheel hub (1) inner side, petiole sleeve (20) middle inside is provided with protruding ring (21), and in petiole sleeve (20), be provided with the tapered roller bearing (22) and the thrust-bearing (23) that are enclosed within petiole (3) above and are positioned at the upper and lower both sides of protruding ring (21), the upper-end surface of tapered roller bearing (22) contacts with the ladder surface on petiole (3) top, and be provided with O RunddichtringO (24) between petiole (3) upper portion side wall and petiole sleeve (20), on the petiole (3) of petiole sleeve (20) below, be screwed with locking nut (25), between locking nut (25) and thrust-bearing (23), be provided with the distance cover (26) that contacts and be enclosed within both on petiole (3), on petiole (3), be installed with coaxial with wheel hub (1) and with the fixing support ring (27) of wheel hub (1), on support ring (27), be fixed with the guide sleeve (28) being enclosed within on petiole (3).

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