CN1978293A

CN1978293A - Spiral conveyor bearing body (suspension bearing)

Info

Publication number: CN1978293A
Application number: CN 200510122820
Authority: CN
Inventors: 赵峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-11-30
Filing date: 2005-11-30
Publication date: 2007-06-13

Abstract

This invention relates to a bearing used on a helix transportation machine characterizing that an oil sealing chamber with an infusion nozzle, an intersection chamber and a hermetic cabin are set in the inner holes at both sides of the bearing , O-type sealing loops are matched on the opposite shaft necks in the intersection cabin, a compressed air interface is set on the hermetic cabin, woolen felts are set in the inner holes at both ends of the bearing, magnetic graphite blocking loops and flywheel are matched on the sides of both ends of the bearing and the inner hole of the flywheel is fixed on the shaft yet can shift axially and operates along with the shaft, an end of a lead of a positive and negative current loop is set in the bearing box, the other end of the lead is fetched out of the bearing and connected on a powder feeding alarm device.

Description

New screw conveyer bearing body (suspension bearing)

Technical field:

The present invention relates to a kind of bearing body, especially a kind of bearing body (suspension bearing) that is used on the conveyor screw.

Background technology:

Conveyor screw is a kind of conveyer that does not have flexible traction organ.It relies on the axle that has helicallobe to rotate in the osed top hopper and promotes the material operation.Common conveyor screw by a cephalomere, periproct and in several segmentum intercalaris form the generally long 2-3m of every joint.Hopper is the U-shaped cross section, each internode bolt together (see figure 1).Conveyor screw easily is obstructed at suspension bearing place material when convey materials, easily form material lagging, as long as exist running clearance between bearing body structure axis and bearing, trickle material will be clamp-oned and cause seal failure in the bearing body, thereby make lubrication failure, cause bearing failure at last, be subjected to the restriction of bearing body size, in the actv. space, the bearing body sealing problem of prior art does not also have actv. radical cure means.

Summary of the invention

The object of the present invention is to provide a kind ofly, can significantly improve the bearing body sealing effectiveness, and can work as in the bear box in case enter a kind of New screw conveyer bearing body (suspension bearing) that dust can be realized auto alarm.

For achieving the above object, the technical solution adopted in the present invention is: a kind of New screw conveyer bearing body (suspension bearing) contains the bearing cone endoporus and fits on the axle, bearing cone is located with clamp by the shaft shoulder and axle respectively, the outer ring of bearing fits in the stepped hole of bear box, the another side of outside race is located by bearing box cover hole step surface, bearing box cover is fixed on by socket bolt and constitutes bearing body on the bear box, in the bearing body endoporus of bearing both sides, is furnished with skeleton oil seal respectively, be characterized in: in the bearing body endoporus of bearing both sides, also be respectively equipped with the oil packing chamber, the chamber crosses, air-tight chamber, and on the oil packing chamber, be provided with zerk, on the axle journal of indoor axle relatively that crosses, is furnished with the O RunddichtringO, on air-tight chamber, be provided with the pressurized air interface, in the endoporus of bearing body two ends, is furnished with wool felt, is furnished with the magnetic graphite back-up ring respectively in side, bearing body two ends, the magnetic graphite flywheel, the endoporus close-fitting of magnetic graphite flywheel but can also longitudinal travel and turn round with axle on axle; Be provided with an end of positive and negative electrode current return lead in bear box, the other end of lead is drawn outside bearing body and is connected on the powder feeding alarm device.

Described a kind of New screw conveyer bearing body (suspension bearing) is characterized in: the magnetic graphite flywheel is made of disc washer and double-paraboloid line style flywheel stack combinations one, and the periphery of its medial surface is circular, and the periphery of lateral surface is the double-paraboloid line style.

The present invention's beneficial effect compared with prior art:

1, because pressurized air is incorporated on the bearing body, and the grease sealing of joint both sides, make and formed a more complete sealing system between the three, converge the chamber between grease chamber in the sealing member and the air chamber, be comparable to the central labyrinth seal of general design, but under stable compressed air pressure effect, make the G﹠O full level that converges the chamber very high, cooperate the O RunddichtringO to form and have better sealing effectiveness, solved common bearing for screw conveyer mechanical seal problem than general labyrinth seal;

2, the sealing of pair of magnetic flywheel is adopted in the outermost sealing, make side seal into radial seal, thereby can not consider tolerance clearance fully between two sealing members. fundamentally changed the leak free effect. the flywheel outer ring is designed to the double-paraboloid line style, no matter conveyer is to which direction pulverized coal conveying, coal dust can both be pushed away face of joint, reduce the coal dust pressure of face of joint;

2, the present invention is simple in structure, and is easy to process, and installation and maintenance load are all very little, and a spot of adjustment is carried out in sealing, just can use in the conveyer of carrying different medium;

3, the present invention has improved the service life of bearing significantly, has reduced fault power time widely.Through contrasting on probation showing, prior art is under the situation of running continuously, and its service life is generally about 5 months; And the present invention is under the situation of continuously running, general about 12 months of its service life;

4, the pumped (conveying) medium of Zeng Jiaing enters into warning device behind the bear box, utilizes the electric conductivity of coal dust to want big principle than air, sets up the warning system, makes the bearing physical efficiency obtain maintenance in time.

Description of drawings:

Fig. 1 is prior art running condition figure;

Fig. 2 is a front view of the present invention;

Fig. 3 is a magnetic graphite flywheel front view;

Fig. 4 is the upward view of Fig. 3.

The specific embodiment:

Describe embodiments of the invention in detail below in conjunction with accompanying drawing:

As Fig. 2-shown in Figure 4, the inner ring endoporus of bearing 6 fits on the axle 1, the inner ring of bearing 6 is located with clamp 15 by the shaft shoulder and axle respectively, the outer ring of bearing 6 fits in the stepped hole of bear box 18, the another side of bearing 6 outer rings is by step surface location, bearing box cover 5 hole, bearing box cover 5 is fixed on the bear box 18 by socket bolt 7 and constitutes bearing body, in the bearing body endoporus of bearing 6 both sides, are furnished with outside framework oil seal 8 sealings respectively, in the bearing body endoporus of bearing 6 both sides, also be respectively equipped with oil packing chamber 2, chamber 3 crosses, air-tight chamber 4, and on oil packing chamber 2, be provided with zerk 11, in the chamber 3 that crosses, is furnished with O RunddichtringO 10 on the axle journal of relative axle 1, on air-tight chamber 4, be provided with pressurized air interface 9, in the endoporus of bearing body two ends, is furnished with wool felt 14, is furnished with magnetic graphite back-up ring 12 respectively in side, bearing body two ends, magnetic graphite flywheel 13, the endoporus close-fitting of magnetic graphite flywheel 13 is on axle 1, but can also longitudinal travel and with axle 1 running, magnetic graphite flywheel 13 is made of disc washer and double-paraboloid line style flywheel stack combinations one, the periphery of its medial surface is circular, and the periphery of lateral surface is the double-paraboloid line style.Be provided with an end of positive and negative electrode current return lead 17 in bear box 18, the other end of lead 17 is drawn outside bearing body and is connected on the powder feeding alarm device 16.

Principle of work:

What 1, the design selected for use is to carry leak free thrust baring 6; the bearing cartridge clip outside self band sealing layer; and seal very tight; play the effect of autoprotection; add that the utility model forms two seals in bearing 6 outsides, make in the bear box 18 to be full of grease, just in case after advancing powder or other in the bear box 18 and transporting material; to have a penetrablility relatively poor because coal dust or operation material are mixed in a time-out with oil, can't enter in the bearing 6 operation trajectories.Add at the set outside framework oil seal 8 in bear box 18 two sides, the grease in the bear box 18 and the pressurized air of outer seal part are kept apart, exchange penetration does not take place, can prevent that on the one hand the grease in the bear box 18 from infiltering in the pressurized air air-tight chamber 4, stop up compressed air channel, prevent that also pressurized air from directly entering in the bear box 18 simultaneously, cause the dust or other medium that infilter in the pressurized air air-tight chamber 4, along with pressurized air together, enter in the bear box 18.

2, generation current factory generally all is equipped with the control pressurized air, draw one tunnel control pressurized air, sealing medium as the bearing body sealing member, be in the middle of two grease chambeies in the pressurized air air-tight chamber 4, guarantee that the grease in two grease chambeies positions, and can exchange penetration, produce mutually and pollute, the 2 pairs of pressurized airs in both sides oil packing chamber have also been carried out space constraint in addition, have prevented that pressurized air from overflowing from oil packing chamber 2, cause the transmission medium flying dust.

3, be to utilize O type circle 10 to seal together in the middle of the three seals chamber, main effect is: O type circle 10 own is exactly reasonable leakproofing material on the one hand, in addition on the one hand, this chamber 3 that crosses is between compressed air sealing chamber 4 and the oil packing chamber 2, the design function of itself is in this indoor converging with G﹠O, pressurized air applied pressure and outer coal dust form the cushion layer that crosses here to the pressure that grease in the sealed chamber forms, the labyrinth seal in the general design has been used for reference in this part design, but sealing effectiveness is more eager to excel in whatever one does than direct labyrinth seal.

4, grease oil packing chamber 2 has been arranged in 3 outsides, chamber that cross, and installed zerk 11 additional in grease oil packing chamber 2, the grease of regular replenishment sealed chamber, zerk 11 adopts self-locking type, during oiling, zerk 11 sealing pellets shot from a slingshot are forced down, after oiling finishes, pellet shot from a slingshot ejects, and zerk 11 is sealed.The radical function of grease oil packing chamber 2 is to prevent that directly coal dust from entering into bearing seal, the pressurized air of 2 inboards, oil packing chamber is exerted pressure to grease all the time, and pressure is by the oil reservoir transmission, finally be applied to oil packing chamber 2 seals, stoped the infiltration of coal dust.

5, the outermost layer of sealing member is design-calculated bearing body leak free most critical position, on design and making, is the unique critical point that contacts with coal dust of this bearing body, has at first added wool felt sealing 14 in bearing body two stomidiums, prevents that grease from oozing out; Be provided with a pair of dynamic seal (packing) respectively in side, bearing body two ends, form by the DYNAMIC MAGNETIC graphite flywheel 13 that is fixed on the static magnetic graphite ring washer 12 on the bearing body sealing member and be fixed on the axle 1, DYNAMIC MAGNETIC graphite flywheel 13 rotates together with axle 1, coaxial 1 contact ratio of magnetic graphite flywheel 13 endoporus is tighter, but can be, thereby guarantee that this a pair of magnetic pad circle engages tightly all the time axially the moving of axle 1.Magnetic graphite flywheel 13 is divided into two parts, and a part is tightly to engage with static magnetic graphite gasket 12, stops coal dust to penetrate into the bearing body sealing from face of joint; Another part is that magnetic graphite flywheel 13 lateral surfaces are designed to the double-paraboloid line style, and Parabolic cutting edge will enter the coal dust of faying face, and incision material casting trough because action of centrifugal force is rotated the faying face of dishing out, reduces the pressure of the coal dust of face of joint.DYNAMIC MAGNETIC graphite flywheel 13 poted assemblives can adopt high magnetic material, and magnetic graphite flywheel 13 two parts are attracted each other, and reach the leak free effect; Also can on axle 1, fix a spring, adopt the design add spring thrust, make that flywheel and packing ring are tight to be combined, all in scope disclosed by the invention.

6, when sealing member damages, in order in time to remind the user to note, prevent that bearing 6 is damaged, cause bearing body to be scrapped fully, in bear box 18, increased powder feeding alarm device 16, the groundwork principle of powder feeding alarm device 16, it is the electric conductivity that utilizes coal dust, one end of in bear box 18, joining the positive and negative electrode of lead 17, set up a current return, after 18 li of bear boxs entered coal dust, one of two leads 17 were rectified between the negative pole because the coal dust existence, the current return conducting makes warning device realize reporting to the police.

Claims

1, a kind of New screw conveyer bearing body (suspension bearing), the inner ring endoporus that contains bearing (6) fits on the axle (1), the inner ring of bearing (6) is located with clamp (15) by the shaft shoulder and axle respectively, the outer ring of bearing (6) fits in the stepped hole of bear box (18), the another side of bearing (6) outer ring is located by bearing box cover (5) hole step surface, bearing box cover (5) is fixed on bear box (18) by socket bolt (7) and goes up the formation bearing body, in the bearing body endoporus of bearing (6) both sides, is furnished with outside framework oil seal (8) sealing respectively, it is characterized in that: in the bearing body endoporus of bearing (6) both sides, also be respectively equipped with oil packing chamber (2), chamber (3) crosses, air-tight chamber (4), and on oil packing chamber (2), be provided with zerk (11), in the chamber that crosses (3), is furnished with O RunddichtringO (10) on the axle journal of relative axle (1), on air-tight chamber (4), be provided with pressurized air interface (9), in the endoporus of bearing body two ends, is furnished with wool felt (14), is furnished with magnetic graphite back-up ring (12) respectively in side, bearing body two ends, magnetic graphite flywheel (13), the endoporus close-fitting of magnetic graphite flywheel (13) but can also longitudinal travel and turn round with axle (1) on axle (1); Be provided with an end of positive and negative electrode current return lead (17) in bear box (18), the other end of lead (17) is drawn outside bearing body and is connected on the powder feeding alarm device (16).

2, a kind of New screw conveyer bearing body according to claim 1 (suspension bearing), it is characterized in that: magnetic graphite flywheel (13) is made of disc washer and double-paraboloid line style flywheel stack combinations one, the periphery of its medial surface is circular, and the periphery of lateral surface is the double-paraboloid line style.