CN2064272U - Stone removing machine by use of principle of gravity separation - Google Patents

Abstract

The utility model discloses an improved stone removing machine by use of the principle of gravity separation, which is used for cleaning grains. The utility model provides with an adjustable valve plate device for electromagnetic stones; A vibration screen body is supported by three sets of springs; the two vibration motors driving the screen body are connected through a bolt holding structure and a cross shaft on the screen body. The stone removing machine by use of the principle of gravity separation provided by the utility model eliminates the phenomenon that materials run from a stone outlet port for the unsteadiness of the feeding flow, overcoming the problems of the early fatigue rupture of the cross shaft, short fatigue service life of a rubber ring, etc. Therefore, the effect of removing the stones by separation is stable, and the adaptability is wider.

Description

Stone removing machine by use of principle of gravity separation

The utility model is a kind of cereal cleaning equipment, is mainly used in grain processing industry and removes grain of sandstone shoulder to shoulder and the clod that is mingled with in the cereal, and cereal is classified into weight two parts, and be the improvement of existing gravity classification stone remover.

Existing gravity classification stone remover, include sieve nest, elastic bearing, vibrating motor, Material collecting box for harvesting, air intake device etc., folding has the two-layer compass screen surface that is used for classification and removes stone about in the sieve nest, the hand-adjusting type stone valve plate that is positioned at the crimped wire woven mess front upper place can be controlled the discharge of stone, sieve nest relies on two groups of support springs of rear lower, with in the supporting of the hinged strut of an adjustable for height use rubber ring of preceding bottom, two vibrating motors drive sieve nest and do straight-line oscillation a little, this two vibrating motor is connected with seat board on being welded on sieve nest rear portion transverse axis, and air intake device and Material collecting box for harvesting constitute the top of sieve nest.

This existing gravity classification stone remover has following three major defects:

1, the final separating effect of cereal and sandstone is controlled by hand-adjusting type stone valve plate, advancing normally under the machine materials flow state, above-mentioned stone valve plate is adjusted and is fixed on a position, the blowback air stream that obtain this moment, the sandstone grain was discharged smoothly, stoped grain to flow to the sandstone outlet again.But advance in producing that the machine materials flow diminishes suddenly even during fracture; because of material on the compass screen surface very thin; make a large amount of air streams pass compass screen surface and waste; cause at the blowback air stream that still is between entopic stone valve plate of beginning and the crimped wire woven mess and weaken; be not enough to stop grain stream to export to stone; cause a large amount of grain to be discharged, produce and run the material phenomenon, stone has been mixed in grain from the stone outlet.

2, the seat board that connects vibrating motor adopts welding manner to link to each other with transverse axis, and the stress that its welding brings is concentrated defective, makes the easy early fatigue fracture of transverse axis.

3, be used to support the preceding bottom Adjustable bracing bar of sieve nest, as hinge, be subjected to the alternating force effect with rubber ring under long-term vibration, rubber ring is often damaged prematurely by torsional fracture, can not reliablely and stablely work.

The purpose of this utility model just is to provide a kind of improved gravity classification stone remover, eliminates the shortcoming that above-mentioned existing gravity classification stone remover exists, and improves classification and goes the stone effect, improves the adaptability of gravity classification stone remover.

For achieving the above object, the utility model is realized by following several respects.

1, in the Material collecting box for harvesting and sieve nest of existing gravity classification stone remover, in the front upper of crimped wire woven mess, an adjustable electromagnetism stone valve plate device is installed, stone valve plate wherein is positioned at the place that descends most of this device, is parallel to crimped wire woven mess.This device has a connecting rod, articulated stone valve plate on the one end, and a slide block is arranged on the other end, on the connecting rod with slide block and the stone valve plate the device housing in two orthogonal chutes in slide, with point articulated in end of crank and the connecting rod, constitute one " people " font, the other end circumferentially is fixedly linked in rotating shaft with worm gear, the hole of supporting shaft is positioned at the intersection point place of the extended line of two chute center lines of housing, described worm gear is by axially movable worm engaging driving, this worm screw one end is connected with the electromagnet shaft extension, electromagnet is fixed with the flange on bolt and the sleeve, the other end at sleeve spins with screw thread pair ways of connecting and regulating sleeve, shaft shoulder flange on the worm screw places in the regulating sleeve, the two axially limits, the back-moving spring that is contained in the cover compresses worm screw shaft shoulder flange, with the spring adjusting rod that is screwed in the regulating sleeve, adjust the pressure of back-moving spring, and fixed reset spring, and rely on pin or holding screw and regulating sleeve to be fixed as one, handwheel on the spring adjusting rod places the outside of device, is used for adjusting in the outside of equipment the relative position of stone valve plate and crimped wire woven mess.

During operation, rotate handwheel, change the worm screw axial location, then drive worm gear and rotate, and make crank connecting link and slide block action, also make stone valve plate upper and lower translation simultaneously, be transferred to the position an of the best.If electromagnet gets, then the thrust of its generation can promote worm screw and moves, pass through crank connecting rod sliding block mechanism, make the downward translation of stone valve plate, and the spacing between crimped wire woven mess reduces, and blowback air velocity degree is increased, thereby stoped grain to flow to the stone outlet, the This move process be naturally receive that into machine materials flow diminishes suddenly in addition the signal of fracture after just carry out automatically.Recoil simulator---the microswitch of this position is installed in Material collecting box for harvesting for this reason, and adjustable spacing adjusting nail.Simultaneously, border operational verification factually, behind this blackout, the stone valve plate is homing at once not, and a period of time that stays on is said definitely, be exactly the signal of telecommunication of microswitch institute conversion, input to one and include in the delay control circuit that dc source, time-delay relay etc. form, work on the control electromagnet and just cut off the power supply after a period of time, make the stone valve plate keep its position that moves down that the process of a hysteresis is arranged.

In addition, it is that grain can flow to above the stone valve plate that the stone valve plate moves down a problem of being brought, for eliminating it, and specially at the front end edge of stone valve plate, along whole width, admittedly add a shelves flitch.

2, the vibrating motor that drives the sieve nest vibration adopts motor seat board and another pipe clamp shape saddle that has pipe clamp shape saddle, embraces on the transverse axis that is stuck in the sieve nest rear lower by the bolted mode.

3, the supporting arrangement of supporting sieve nest, all reaching up and down by helical spring, guide bracket constitutes, helical spring is crushed on up and down between the guide bracket, front portion supporting wherein also includes adjustable screw thread strut and screw rod cover, and empty cover of guide bracket and axial location are in adjustable screw thread strut under it, adjustable screw thread strut is rotatably connected in the screw rod cover, rotate adjustable screw thread strut, the sieve nest front portion is moved up or down, thereby can adjust the level inclination of sieve nest.

In view of the above, the gravity classification stone remover that the utility model provides has following advantage:

1, because adjustable electromagnetism stone valve plate device is installed, can advance that the machine materials flow diminishes suddenly in addition the fracture situation under, the hurried blowback air velocity degree that is used to control grain and the final separating effect of sandstone that increased, and really can stop grain to flow to the sandstone outlet, this just overcomes and has eliminated aforementioned first shortcoming of existing gravity classification stone remover;

2, Bolt Connection is adopted in the installation of vibrating motor, can overcome the early fatigue off-axis phenomenon that the stress on the transverse axis concentrates defective to be caused, and the motor setting angle can be adjusted, and easily makes exciting force pass through the sieve nest barycenter, has guaranteed the work effect of gravity classification stone remover like this;

3, the adjustable support of sieve nest front portion has adopted the helical spring that buffer capacity is good and rigidity is higher, can bear bigger axial load and absorb micro breadth oscillation, does not have the internal friction as rubber elastic element, therefore has more significant superiority.

Below in conjunction with description of drawings the utility model, wherein:

Vertical view of the gravity classification stone remover that provided is provided Fig. 1.

Fig. 2 is the right view of Fig. 1.

Fig. 3 is the cutaway view along the A-A line among Fig. 2, has shown the detailed structure of adjustable electromagnetism stone valve plate device.

Fig. 4 is the cutaway view along the B-B line among Fig. 3.

Fig. 5 is the cutaway view along C-C line among Fig. 2, shows the mounting means of vibrating motor.

Fig. 6 is the partial view of Fig. 1, shows the supporting structure of sieve nest.

Fig. 7 is illustrative adjustable electromagnetism stone valve plate of the present utility model and its delay control circuit.

As shown in Figure 1 and Figure 2, the material inlet 1 of equipment and two sandstone outlets 2 are in the front end of sieve nest 3, suspended hood 4 and air-suction duct device 5 above the sieve nest 3, be used for air draught, the Material collecting box for harvesting 6 that is communicated with material inlet 1 is housed above, can control into machine mass flow with adjustable plate washer 7 and extension spring 8 in the Material collecting box for harvesting 6, spacing adjustment screw 9 is contained on the fender plate 7, microswitch 10 of its positioned beneath, rely on the opening degree of fender plate 7, with the control of 9 pairs of microswitches 10 of spacing adjustment screw, reflect to advance that the machine materials flow diminishes suddenly even the signal of telecommunication of fracture.Classification compass screen surface 11 stacks up and down with crimped wire woven mess 12, and an adjustable electromagnetism stone valve plate device 13 arranged in the front upper place of crimped wire woven mess 12, this device is installed in the middle part that classification compass screen surface 11 omits by a singletree 14 that descends a bit, handwheel 15 can be adjusted in the outside of equipment, flows to sandstone outlet 2 with separating effect or the containment grain of controlling sandstone.

As Fig. 3, shown in Figure 4, stone valve plate 16 is hung by two sliding pins 17, the middle part of two sliding pins 17 is hinged with a major axis 18, make it and in hole 19, to move up and down, stone valve plate 16 is mentioned and is fallen in other words conj.or perhaps, the power that electromagnet 20 or back-moving spring 21 are drawn can promote worm screw 22 generations and move axially, because of worm gear 23 and crank 24 usefulness keys 25, pin 26 is fixed in the rotating shaft 27, make 27 deflections around the shaft together of worm gear 23 and crank 24, and cause and 28 swings of the hinged connecting rod of crank 24 other ends, the hinged roller slide block 29 in connecting rod 28 upper ends can only be limited in the perpendicular chute 30 in hole 19 in move, and crank 24 length equal connecting rod 28 length half just, are articulated in connecting rod 28 midpoint simultaneously.The enclosed shape that the symmetrical center line of chute 30, hole 19 axis and connecting rod 28 are surrounded constitutes the flat square triangle, and rotating shaft 27 just is positioned on the right angle electrical of right angled triangle, by housing 31 supportings.So, connecting rod 28 lower ends hinged major axis 18 and two sliding pin straight-line displacements about in the of 17, thereby reach the purpose that stone valve plate 16 rises and falls.In addition, worm gear 23 and worm screw 22 engagements, shaft extension 32 by electromagnet 20 is connected as a single entity with worm screw 22, shaft shoulder flange 33 on the worm screw 22 is contained in the regulating sleeve 34, and the back-moving spring 21 usefulness spring adjusting rods 35 in the cover are by screw thread pair 36 set pressures, and be fixed together by pin 37 and regulating sleeve 34, handwheel 15 is housed on the spring adjusting rod 35, and regulating sleeve 34 is connected on the sleeve 39 in the mode of screw thread pair 38, and sleeve 39 usefulness bolts 40 are connected on electromagnet 20 and the singletree 14.Striker plate 58 is fixed on stone valve plate 16 ends along last by rivet 59.

As shown in Figure 5, vibrating motor 41 is fixing with transverse axis 42, and direction of vibration can be regulated with the method for rotation on transverse axis 42 by a pair of pipe clamp shape saddle 44 on the vibrating motor seat board 43, and is fastening with bolt 45.

As shown in Figure 6, with the last guide bracket 46 of sieve nest 3 front and rear parts,, be supported on the following guide bracket 49 on the base 48 in vibratile mode by helical spring 47.Wherein, anterior supporting also includes adjustable screw thread support bar 50 and screw rod overlaps 51 compositions, with adjustable screw thread support bar 50 up-down adjustment in screw rod cover 51, the front position height of sieve nest 3 can be changed, and screw rod cover 51 inserts interior the fixing of empty stomach of base 48.

As shown in Figure 7, when gravity classification stone remover of the present utility model turns round, sieve nest 3 is done toward the complex line micro breadth oscillation, simultaneously, entire equipment is in the air-breathing vacuum state that causes, material enters from import 1, fall immediately by Material collecting box for harvesting 6 on the classification compass screen surface 11 on upper strata, because the effect that material is vibrated, and the air stream 52 that passes through compass screen surface, make the grain AUTOMATIC ZONING, the heavy cereal that accompanies the stone grain is fallen on the crimped wire woven mess 12 of lower floor, the bigger impurity thing of other proportion that the strict search of crimped wire woven mess 12 usefulness is used for guaranteeing to separate the stone grain and may exists according to the proportion size.

In a single day equipment get into smooth, and generally must do the necessary work of adjustment in advance, or adjust in operation process temporarily.For example, vibrating motor 41 can rotate (Fig. 5) around transverse axis 42, thereby the effect side of power just can obtain the even vibration of whole sieve layer making the barycenter of its action direction by sieve nest 3 to regulating on demand.Again for example, the final separating effect of cereal and sandstone is to control by adjustable electromagnetism stone valve plate device 13, blowback air stream 53 can be regulated on demand, if the Flow of Goods and Materials state is satisfied fully, stone valve plate 16 just can be in can make in the sandstone outlet 2 and not contain cereal, the best operational position that stone is discharged smoothly.In addition, in advance spacing adjustment screw 9 is adjusted to a corresponding position, for example advance that the machine materials flow diminishes suddenly in addition during fracture in this case, just can depress microswitch 10 in this locational spacing adjustment screw 9, and reflect a signal of connecting circuit, by dc source 54 power supplies, the coil 56 of time-delay relay 55 is got, delayed contact 57 closures of cutting off the power supply simultaneously, make electromagnet 20 energisings, to control and to drive adjustable electromagnetism stone valve plate device 13, stone valve plate 16 is fallen at once, make it very little with the spacing of crimped wire woven mess 12, the speed of so corresponding blowback air stream 53 is with regard to hurried increase, thereby stoped grain to flow to sandstone outlet 2, equipment advance the machine materials flow recover again normal after, so spacing adjustment screw 9 is by the effect of extension spring 8, unclamp microswitch 10, therefore, the signal of originally having connected just can disappear because of microswitch 10 disconnects, coil 56 dead electricity, the outage delayed contact 57 of this time-delay relay 55, can not throw off at once, continue closedly in the delay time that mixes up in advance, the size of this time preferably is adjusted at the cereal that guarantees on the crimped wire woven mess 12 and returns to flow regime again or occur being advisable when stone is slightly piled up.In a single day delay time finishes, and then corresponding electromagnet 20 sides meeting dead electricity is mentioned stone valve plate 16, and is returned to place, former operating position, changes normal duty over to.

Claims (3)

1, a kind of gravity classification stone remover, folding has the sieve nest of two-layer compass screen surface about having one, be bearing in the elastic system that contains rubber elastic element, with two vibrating motor vibrations, at one end be provided with the outlet of a material inlet and sandstone, and hand-adjusting type stone valve plate device, the other end is provided with two outlets, be used as the discharge of material oversize respectively, of the present utility model being characterised in that, front upper place at the crimped wire woven mess of equipment, an adjustable electromagnetism stone valve plate device is installed, the front end edge of the stone valve plate of this device, willow connects fixes a striker plate, be hinged with a connecting rod at the middle part of stone valve plate, a hinged roller on the other end of connecting rod, with point articulated in end of crank and the connecting rod, pin reinstated by the other end and worm gear one or key is fixedly linked in a rotating shaft, the hole of supporting shaft, be positioned at the intersection point place of the extended line of two chute center lines on the housing, stone valve plate and roller just are limited in these two orthogonal chutes, worm gear and an axially movable worm engaging, this worm screw one end is connected with the electromagnet shaft extension, on the other end with shaft shoulder flange place in the regulating sleeve, both axially limit, the back-moving spring that is contained in the regulating sleeve compresses worm screw shaft shoulder flange, with the spring adjusting rod in the regulating sleeve, mode with screw thread pair, the other end of fixed reset spring, and rely on pin or holding screw and regulating sleeve to be fixed as one, the other end on the spring adjusting rod is equipped with handwheel, to regulate stone valve plate upper and lower translation, regulating sleeve spins with sleeve again in the mode of screw thread pair, utilize the flange on the sleeve to adopt the bolting electromagnet, electromagnet is connected to and includes dc source, in the delay control circuit that time-delay relay and microswitch are formed, and microswitch is installed in the Material collecting box for harvesting, break-make position with a spacing adjustment screw adjustment microswitch can be carried out this device automatically.

2, a kind of as the desired gravity classification stone remover of claim 1, it is characterized in that driving in the equipment vibrating motor of sieve nest vibration, adopt the motor seat board and another pipe clamp shape saddle that have pipe clamp shape saddle, use the bolted mode, be stuck on the transverse axis of sieve nest rear lower and embrace.

3, a kind of as claim 1 or 2 desired gravity classification stone removers, it is characterized in that supporting three supporting arrangements of sieve nest, be by helical spring, guide bracket constitutes up and down, helical spring is crushed on up and down between the guide bracket, wherein, anterior supporting also includes adjustable screw thread strut and screw rod cover, and empty cover of guide bracket and axial location are in adjustable screw thread strut under it, and adjustable screw thread strut is rotatably connected in the screw rod cover.

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