CN211027038U - Combined grain cleaning center - Google Patents

Abstract

The utility model discloses a modular grain clearance center. The utility model discloses a combination formula grain clearance center includes two-stage vibration screening, two-stage selection by winnowing, two-stage dust removal to impurity and dust in can fully separating out the grain, and the air current has formed an inner loop in clearance center inside under the effect of fan, and the edulcoration effect of removing dust is fine, has promoted production efficiency greatly, is fit for the supporting use of granary.

Description

Combined grain cleaning center

Technical Field

The utility model relates to a grain cleaning equipment technical field especially relates to a modular grain clearance center.

Background

The grain treatment process needs to be carried out through a filtering and dedusting step, the grain is screened by adopting a simple vibrating screen in the prior art, and impurities such as dust and the like can be generated in the screening process to influence the environment in the production treatment process, so that the health of personnel is harmed. Although some grain cleaning equipment integrating the vibrating screen and the winnowing mechanism is available at present, the grain cleaning equipment only comprises primary vibrating screening and primary winnowing, the dust and impurity removing effect is poor, the grain cleaning equipment needs to be repeatedly processed for many times, and the production efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model provides a modular grain clearance center to solve the technical problem that the dust removal edulcoration effect that current grain cleaning equipment exists is poor, production efficiency is low.

According to an aspect of the utility model, a combined grain cleaning center is provided, including hopper, one-level clearance sieve, big miscellaneous output mechanism, one grade of bin gate, one-level spiral go out miscellaneous device, go up wind selection case, one-level dust collector, second grade dust collector, fan, motor, play tuber pipe, frame, lower wind selection case, second grade spiral go out miscellaneous device, two grades of bin gates, second grade wind selection device, second grade clearance sieve, discharge gate device, one-level wind selection device and wind distribution device, hopper, one-level clearance sieve, go up wind selection case, one-level dust collector, second grade dust collector, fan, motor, lower wind selection case, second grade clearance sieve all install in the frame;

the device comprises a storage hopper, a primary cleaning sieve, a primary air separation box, a secondary air separation device, an air outlet pipe, an air distribution device and a motor, wherein the storage hopper is arranged above a feed inlet of the primary cleaning sieve, the primary air separation mechanism is connected with the primary cleaning sieve and used for discharging large impurities screened by the primary cleaning sieve, a discharge outlet of the primary cleaning sieve is arranged above a feed inlet of the upper air separation box, a discharge outlet of the upper air separation box is arranged above a feed inlet of the lower air separation box, the motor is connected with the fan and used for driving the fan to work, the fan is respectively connected with the upper air separation box and the lower air separation box through the primary air separation device, the primary air separation device is used for carrying out primary dust filtration on air flow sucked by the fan from the upper air separation box and the lower air separation box, first order wind selector and second grade wind selector install respectively in two air outlets of minute wind device and are used for carrying the air current even in ascending selection by winnowing case and the selection by winnowing incasement respectively and carry out the selection by winnowing edulcoration, it goes out miscellaneous device to go up the selection by winnowing incasement and be provided with first grade material door and first grade spiral, first grade material door is close to the setting of first grade wind selector, be provided with second grade spiral in the selection by winnowing case down and goes out miscellaneous device and second grade material door, second grade material door is close to the setting of second grade selection by winnowing device, the first grade spiral goes out miscellaneous device and second grade spiral and goes out the light miscellaneous device that miscellaneous device was used for discharging the selection by winnowing after, the discharge gate of selection by winnowing case is located the top of the feed inlet of second grade clearance sieve down, discharge gate device installs.

Further, the air distribution device comprises an air distribution cylinder, a conical cylinder, an air inlet, a first air outlet and a second air outlet, the conical cylinder is arranged in an inner cavity of the air distribution cylinder, the air inlet is respectively connected with the air distribution cylinder and the air outlet pipe, the air distribution cylinder conveys air flow in the air outlet pipe to a cavity between the air distribution cylinder and the conical cylinder through the air inlet, the first air outlet and the second air outlet are both communicated with the cavity between the air distribution cylinder and the conical cylinder, and the cavity between the air distribution cylinder and the conical cylinder is used for accelerating and rotating the entering air flow and then conveying the air flow to the first air outlet and the second air outlet respectively.

Furthermore, first air distribution plates for enabling air flow to be uniformly output are arranged in inner cavities of the first air outlet and the second air outlet.

Furthermore, the first air distribution plate comprises a plurality of partition plates which are uniformly arranged at intervals, and an airflow output channel is formed between every two adjacent partition plates.

Further, still be provided with the air regulating door on the first even aerofoil, the air regulating door is used for adjusting the amount of wind of first air outlet and second air outlet output through adjusting its opening size.

Further, one-level wind selector and second grade wind selector all include the even aerofoil of fixed plate and second, the fixed plate is installed respectively in first air outlet and second air outlet department, the even aerofoil of second is installed on the fixed plate and is set up in the slant, the even aerofoil of second is used for carrying out the rectification so that it is directional, evenly blow to the material to the air current of first air outlet and second air outlet output.

Further, second grade clearance sieve includes sieve case, vibrating motor and bumper shock absorber, vibrating motor installs and is used for driving the vibration of sieve case in sieve case below, the bumper shock absorber is connected with sieve case and frame respectively and is used for playing the cushioning effect, the sieve case is including the first floor sifter that is used for the coarse impurity of filtering and the second floor sifter that is used for the fine impurity of filtering, discharge gate device includes three discharge gate in order to be used for discharging respectively coarse impurity, fine impurity and clean millet.

Furthermore, the shock absorber comprises a screen shaft, an upper spring seat, a bushing, a bearing, a first spring, a spring seat, an installation seat, a pull rod hole shaft and a positioning pull rod, the installation seat is fixed on the frame, the first end of the screen shaft is fixedly connected with the screen box, the bearing is installed at the second end of the screen shaft, the bushing is sleeved on the screen shaft and is positioned between the bearing and the screen box, the upper spring seat is hinged with the screen shaft, the spring seat is hinged with the installation seat, the spring seat is of a hollow structure with an upper end opening, the upper spring seat is covered at the upper end opening of the spring seat, the upper spring seat can move up and down relative to the spring seat, the first spring is arranged in the spring seat, one end of the first spring is abutted against the upper spring seat, the other end of the first spring is abutted against the bottom wall of the spring seat, one end of the positioning pull rod is hinged with the installation seat, and the other end of, the spring seat rotates around the mounting seat by adjusting the length of the positioning pull rod so as to adjust the vibration direction of the shock absorber to be consistent with the vibration direction of the vibration motor.

Further, the bumper shock absorber still holds in the palm under the spring that sets up in the spring holder, one side that the spring seat of honour is close to the spring and holds in the palm down is provided with first boss, one side that the spring seat of honour is close to the spring down is provided with the second boss, a pot head of first spring is established on first boss and with the spring seat of honour butt, another pot head establish on the second boss and with the spring hold in the palm the butt down.

Further, the shock absorber further comprises an adjusting bolt, a threaded hole is formed in the bottom of the spring seat, and the adjusting bolt is matched with the threaded hole and then extends into the spring seat to abut against the lower support of the spring.

The utility model discloses following beneficial effect has:

the utility model discloses a combination formula grain clearance center includes two-stage vibration screening, two-stage selection by winnowing and second grade dust removal altogether to impurity and dust in can fully separating out the grain, and the air current has formed an inner loop in clearance center inside under the effect of fan, and the edulcoration effect of removing dust is fine, has promoted production efficiency greatly, is fit for the supporting use of granary.

In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:

fig. 1 is a schematic structural view of a combined grain cleaning center according to a preferred embodiment of the present invention.

Fig. 2 is a front view schematically illustrating the air distributing device in fig. 1 according to the preferred embodiment of the present invention.

Fig. 3 is a schematic partial sectional view of the wind-dividing device in fig. 1 according to the preferred embodiment of the present invention.

Fig. 4 is a schematic structural view of the primary air separation device and the secondary air separation device in fig. 1 according to the preferred embodiment of the present invention.

Fig. 5 is a schematic view of the primary air separation device and the secondary air separation device of fig. 1 rectifying air flow according to the preferred embodiment of the present invention.

Fig. 6 is a schematic structural view of the secondary cleaning screen of fig. 1 according to the preferred embodiment of the present invention.

Fig. 7 is a schematic cross-sectional view of the damper of fig. 6 according to the preferred embodiment of the present invention.

Fig. 8 is a front view schematically illustrating the shock absorber of fig. 6 according to the preferred embodiment of the present invention.

Fig. 9 is a structural view of a modification of the shock absorber of fig. 6 according to the preferred embodiment of the present invention.

The reference numbers illustrate:

1. a storage hopper; 2. a first-stage cleaning sieve; 3. a big impurity output mechanism; 4. a first material dividing gate; 5. a primary spiral impurity discharging device; 6. an upper winnowing box; 7. a primary dust removal device; 8. a secondary dust removal device; 9. a fan; 10. a motor; 11. an air outlet pipe; 12. a frame; 13. a lower winnowing box; 14. a secondary spiral impurity discharging device; 15. a second grade material gate; 16. a secondary winnowing device; 17. a secondary cleaning sieve; 18. a discharge port device; 19. a primary winnowing device; 20. a wind distributing device; 100. a fixing plate; 101. a second air distribution plate; 201. a wind distributing cylinder; 202. a conical cylinder; 203. an air inlet; 204. a first air outlet; 205. a second air outlet; 206. a first air distribution plate; 207. an air adjusting door; 171. a screen box; 172. a vibration motor; 173. a shock absorber; 1731. a screen shaft; 1732. a spring upper seat; 1733. a bushing; 1734. a bearing; 1735. a first spring; 1736. a spring lower support; 1737. a spring seat; 1738. adjusting the bolt; 1739. a mounting seat; 1740. a drawbar bore shaft; 1741. positioning the pull rod; 1742. a first support table; 1743. a second support table; 1744. a second spring; 1745. a first groove; 1746. a slide bar; 1747. a second groove; 1748. a first boss; 1749. a second boss.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways, which are defined and covered below.

As shown in fig. 1, the preferred embodiment of the present invention provides a combined grain cleaning center, which comprises a storage hopper 1, a primary cleaning sieve 2, a large impurity output mechanism 3, a primary sorting gate 4, a primary spiral impurity discharging device 5, an upwind sorting box 6, a primary dust removing device 7, a secondary dust removing device 8, a fan 9, a motor 10, an air outlet pipe 11, a frame 12, a downwind sorting box 13, a secondary spiral impurity discharging device 14, a secondary sorting gate 15, a secondary air separating device 16, a secondary cleaning sieve 17, a discharge gate device 18, a primary air separating device 19 and an air separating device 20, wherein the storage hopper 1, the primary cleaning sieve 2, the upwind sorting box 6, the primary dust removing device 7, the secondary dust removing device 8, the fan 9, the motor 10, the downwind sorting box 13 and the secondary cleaning sieve 17 are all installed on the frame 12. The material is by the input of grain conveyer through storage hopper 1, storage hopper 1 sets up the top at the feed inlet of one-level clearance sieve 2, the great impurity of size that contains in the material can be selected to one-level clearance sieve 2, big miscellaneous output mechanism 3 is connected with one-level clearance sieve 2 and is used for discharging the big miscellaneous that is selected through one-level clearance sieve 2. The discharge gate of one-level clearance sieve 2 is located the top of last wind selector 6's feed inlet, and the material after 2 screens of one-level clearance sieve carries out first selection by winnowing in falling into last wind selector 6 from its discharge gate department, the discharge gate of going up wind selector 6 is located the top of the feed inlet of wind selector 13 down, the material after the first selection by winnowing in last wind selector 6 falls into down wind selector 13 from its discharge gate and carries out the second selection by winnowing. Motor 10 is connected with fan 9 and is used for driving fan 9 work, fan 9 selects case 6 and leeward selection case 13 to be connected with last wind respectively through one-level dust collector 7, fan 9 still is connected with play tuber pipe 11 through second grade dust collector 8, it is connected with minute wind device 20 to go out tuber pipe 11, minute wind device 20 is used for dividing into two air currents with one air current of fan 9 output, one-level wind selector 19 and second grade wind selector 16 are installed respectively in two air outlets department of minute wind device 20, one-level wind selector 19 can carry even air current to carry out the selection by winnowing edulcoration in the last wind selection case 6, second grade wind selector 16 can carry even air current to carry out the selection by winnowing edulcoration in the next wind selection case 13. The fan 9 can be through induced draft in the primary dust collector 7 follow windward selection case 6 and the leeward selection case 13, the primary dust collector 7 is arranged in carrying out the first dust filtration to the air current that the fan 9 absorbs from windward selection case 6 and leeward selection case 13, secondary dust collector 8 is used for carrying out the second dust filtration to the air current of fan 9 output, and the air current after the filtration is shunted the output through air distributor 20 again and is carried back to last selection by winnowing box 6 and carry back to lower selection by winnowing box 13 through secondary winnowing device 16 respectively through primary winnowing device 19 to make the air current form an inner loop under the effect of fan 9, the dust removal edulcoration effect is better. Go up being provided with one grade in the wind selection case 6 and dividing the miscellaneous device 4 and one grade spiral and go out miscellaneous device 5, one grade of bin gate 4 is close to one grade of wind selection device 19 and sets up, be provided with second grade spiral in the lower wind selection case 13 and go out miscellaneous device 14 and second grade feed divider 15, second grade of bin gate 15 is close to second grade of wind selection device 16 and sets up, one grade spiral goes out miscellaneous device 5 and second grade spiral and goes out miscellaneous device 14 and be used for discharging the light miscellaneous of separating after the selection by winnowing. The air current that one-level wind selector 19 carried into in the winnowing box 6 carries out the selection by winnowing to the material that falls into in winnowing box 6 from the discharge gate of one-level clearance sieve 2, and wind-force separates material and light miscellaneous and dust, and light miscellaneous is blown to subside through one-level spiral play miscellaneous device 5 after the place ahead of one-level depiler door 4 and discharges, and the dust is then because fan 9 induced drafts to the windward selection 6 insides of case to subside the back through one-level dust collector 7 and discharge, and heavier material then falls into down in the windward selection case 13 from the discharge gate of windward selection case 6. Similarly, when the material after the first winnowing by the upper winnowing box 6 falls into the lower winnowing box 13, the material is winnowed by the air flow conveyed by the second-stage winnowing device 16, the material is secondarily separated from light impurities and dust by wind power, the light impurities are blown to the front of the second-stage distributing door 15 and are settled and then discharged through the second-stage spiral impurity discharging device 14, the dust is discharged after being settled by the first-stage dust removing device 7 due to the air suction of the fan 9 in the lower winnowing box 13, and the heavier material falls into the second-stage cleaning sieve 17 from the discharge hole of the lower winnowing box 13. It can be understood that the first-stage material distributing door 4 is a discharge port of the upper winnowing box 6, and the second-stage material distributing door 15 is a discharge port of the lower winnowing box 13. The second-stage material door 15 is located above a feeding hole of the second-stage cleaning sieve 17, materials subjected to air separation treatment by the lower air separation box 13 fall into the second-stage cleaning sieve 17 to be subjected to second vibration screening, and the material outlet device 18 is installed at a material outlet of the second-stage cleaning sieve 17 and used for respectively discharging grains and impurities subjected to vibration screening.

In the embodiment, the combined grain cleaning center comprises two-stage vibration screening, two-stage winnowing and two-stage dust removal, so that impurities and dust in grains can be fully separated, an inner circulation is formed in the cleaning center by airflow under the action of the fan 9, the dust removal and impurity removal effects are good, the production efficiency is greatly improved, and the combined grain cleaning center is suitable for being matched with a granary.

It can be understood that the primary dust removing device 7 removes dust through its own structure, and comprises an inner cylinder, an outer cylinder, a conical cylinder, an air inlet, an ash discharge port and the like, wherein dust-containing air flow enters the conical cylinder along the air inlet at the upper part of the outer cylinder in a tangential direction at a high speed, and then the air flow rotates, so that dust is separated from the air flow by means of centrifugal force and collected on the wall of the device, and finally falls into the ash hopper from the ash discharge port due to the action of gravity. The secondary dust removal device 8 blocks dust in the airflow through the filter material, and vibrates the filter material by external force when the dust on the outer surface of the filter material reaches a certain amount, so that the dust falls into the dust hopper after being separated from the filter material.

It can be understood that, as shown in fig. 2 and 3, the air distribution device 20 includes an air distribution cylinder 201, a conical cylinder 202, an air inlet 203, a first air outlet 204 and a second air outlet 205, the conical cylinder 202 is arranged in the inner cavity of the air distributing cylinder 201, a gap is reserved between the conical cylinder 202 and the inner wall of the air distributing cylinder 201, the air inlet 203 is respectively connected with the air dividing cylinder 201 and the air outlet pipe 11, the air dividing cylinder 201 conveys the air flow in the air outlet pipe 11 to the cavity between the air dividing cylinder 201 and the conical cylinder 202 through the air inlet 203, namely, the airflow is conveyed to the gap between the air distributing cylinder 201 and the conical cylinder 202, the first air outlet 204 and the second air outlet 205 are both communicated with the cavity between the air distributing cylinder 201 and the conical cylinder 202, the cavity between the air separation cylinder 201 and the conical cylinder 202 is used for accelerating and rotating the entering air flow and then respectively conveying the air flow to the first air outlet 204 and the second air outlet 205. Due to the special structural design of the conical cylinder 202, the external dimension of the conical cylinder is gradually reduced, so that the air flow conveyed in can accelerate and rotate in the cavity between the air distribution cylinder 201 and the conical cylinder 202 to form centrifugal force, and then the air flow is respectively conveyed to the first air outlet 204 and the second air outlet 205 to realize shunting output. It is understood that the primary air separation device 19 is installed at the first air outlet 204, and the secondary air separation device 16 is installed at the second air outlet 205.

Preferably, the first air distribution plate 206 for uniformly outputting air flow is arranged in each of the inner cavities of the first air outlet 204 and the second air outlet 205, so that the air flow at the first air outlet 204 and the second air outlet 205 is more uniform during outputting, and the air separation effect is better. Specifically, even aerofoil 206 includes the baffle that the even interval of polylith set up, and the vertical setting of polylith baffle, the interval between the adjacent baffle then forms airflow output channel to evenly divide into a plurality of airflow output channels with first air outlet 204 and second air outlet 205, ensure that the air current is more even when exporting. It can be understood that, as a further preferred option, the first air distribution plate 206 is further provided with an air adjustment door 207, the air adjustment door 207 is used for adjusting the air volume output by the first air outlet 204 and the second air outlet 205 by adjusting the opening size of the air adjustment door, and by providing an air adjustment door 207 on the first air distribution plate 206, the air volume output by the first air outlet 204 and the second air outlet 205 can be conveniently adjusted according to the actual air separation effect, so as to ensure a good air separation effect, and the operation is very simple and convenient.

It can be understood that, as shown in fig. 4 and 5, each of the primary air separation device 19 and the secondary air separation device 16 includes a fixing plate 100 and a second air distribution plate 101, the fixing plate 100 is respectively installed at the first air outlet 204 and the second air outlet 205, and the second air distribution plate 101 is installed on the fixing plate 100 and is used for rectifying the air flow output by the first air outlet 204 and the second air outlet 205 so as to make the air flow blow toward the material directionally and uniformly. It can be understood that, as an optimization, the second air distribution plate 101 is arranged obliquely upward to enable the air flow to be blown obliquely upward to the material, and the air flow is blown obliquely upward to the material to enable impurities in the material to drift farther away, so that light impurities and dust can be more sufficiently separated from the material, and the dust removal and impurity removal effects are better. The second air distribution plate 101 comprises a plurality of rows of partition plates which are uniformly arranged at intervals, and an airflow output channel is formed by the distance between every two adjacent partition plates, wherein the distance between every two adjacent partition plates of the second air distribution plate 101 is smaller than the distance between every two adjacent partition plates of the first air distribution plate 206, so that the airflow output by the first air outlet 204 and the airflow output by the second air outlet 205 are divided more uniformly, and the dust removal and impurity removal effects are further improved. In this embodiment, since the lengths of the first outlet 204 and the second outlet 205 of the air-distributing device 20 are limited, the output uniform air flow may not reach the air separation position and is already dispersed, the air flow concentration is poor, the dust and impurity removing effect is possibly influenced, the distance of concentrated delivery of uniform air flow is prolonged by adding the primary air separation device 19 and the secondary air separation device 16 at the first air outlet 204 and the second air outlet 205 respectively, so that the uniform air flow can be delivered to the air separation position in a concentrated manner, good dust and impurity removal effects are ensured, and the spacing between adjacent partitions of the second aerofoil 101 is less than the spacing between adjacent partitions of the first aerofoil 206, therefore, the air flow output by the air outlet can be more uniformly divided, and the air flow can be more uniformly and directionally blown to the material, so that the material is fully and effectively separated from impurities such as impurities and dust.

It can be understood that, as shown in fig. 6, the secondary cleaning sieve 17 includes a sieve box 171, a vibration motor 172 and a damper 173, the vibration motor 172 is installed below the sieve box 171 and is used for driving the sieve box 171 to vibrate, and the damper 173 is connected to the sieve box 171 and the frame 12 respectively and is used for damping, wherein the number of the damper 173 is two. Wherein the screen box 171 comprises a first layer of screen surface for filtering coarse impurities and a second layer of screen surface for filtering fine impurities, the first layer of screen surface is positioned above the second layer of screen surface, so that the material can be screened into coarse impurities, fine impurities and clean grains, and the discharge port device 18 comprises at least three discharge ports for respectively discharging the coarse impurities, the fine impurities and the clean grains.

It can be understood that, as shown in fig. 7 and 8, the damper 173 includes a screen shaft 1731, an upper spring seat 1732, a bushing 1733, a bearing 1734, a first spring 1735, a spring seat 1737, a mounting seat 1739, a pull rod hole shaft 1740 and a positioning pull rod 1741, wherein the mounting seat 1739 is fixedly mounted on the frame 12, a first end of the screen shaft 1731 is fixedly connected with the screen box 171, the bearing 1734 is mounted on a second end of the screen shaft 1731, and the bushing 1733 is sleeved on the screen shaft 1731 and located between the bearing 1734 and the screen box 171. Specifically, the bushing 1733 has one end abutting the bearing 1734 and the other end abutting a boss on the second end of the screen shaft 1731, so that the distance between the bearing 1734 and the boss on the second end of the screen shaft 1731 can be adjusted by selecting bushings 1733 of different length sizes. The upper spring seat 1732 is hinged to the screen shaft 1731, the upper spring seat 1732 can rotate relative to the screen shaft 1731, the spring seat 1737 is hinged to the mounting seat 1739, and the spring seat 1737 can also rotate relative to the mounting seat 1739. The spring seat 1737 is a hollow structure with an open upper end, the upper spring seat 1732 covers the open upper end of the spring seat 1737, the upper spring seat 1732 can move up and down relative to the spring seat 1737, the first spring 1735 is arranged in the spring seat 1737, one end of the first spring 1735 abuts against the upper spring seat 1732, the other end of the first spring 1735 abuts against the bottom wall of the spring seat 1737, when the upper spring seat 1732 vibrates along with the screen shaft 1731 and the screen box 171, the upper spring seat 1732 moves downwards and presses the first spring 1735, and the first spring 1735 is compressed, so that the shock absorption effect is achieved. The positioning rod 1741 has one end hinged to the mounting seat 1739 and the other end connected to the spring seat 1737 through a rod hole shaft 1740, so that the spring seat 1737 can rotate around the mounting seat 1739 by adjusting the length of the positioning rod 1741, and the vibration direction of the damper 173 can be adjusted to be consistent with the vibration direction of the vibration motor 172. It will be appreciated that the positioning bar 1741 can be positioned as desired to adjust its coupling length. In this embodiment, the screen shaft 1731 may be driven by the screen box 171 to vibrate together by fixedly connecting a first end of the screen shaft 1731 to the screen box 171, the upper spring seat 1732 is hinged to the screen shaft 1731 to rotate relative to the screen shaft 1731, the upper spring seat 1732 seals the first spring 1735 inside the spring seat 1737, the first spring 1735 is pressed when the upper spring seat 1732 vibrates together with the screen box 171 and the screen shaft 1731, the first spring 1735 is compressed to perform a shock absorption function, and a positioning pull rod 1741 is provided, one end of which is hinged to the mounting seat 1739, and the other end of which is connected to the spring seat 1737 through the pull rod hole shaft 1740, so that the length of the positioning pull rod 1741 may be adjusted to rotate the spring seat 1737 around the mounting seat 1739, thereby facilitating to adjust the vibration direction of the shock absorber 173 to be consistent with the vibration direction of the vibration motor 172, thereby effectively avoiding the problem of disordered vibration of the secondary cleaning screen 17, and vibration noise is reduced.

It can be understood that, as a preferred option, the damper 173 further includes a spring bottom bracket 1736 disposed in the spring seat 1737, one side of the spring top bracket 1732 close to the spring bottom bracket 1736 is provided with a first boss 1748, one side of the spring bottom bracket 1736 close to the spring top bracket 1732 is provided with a second boss 1749, one end of the first spring 1735 is sleeved on the first boss 1748 and abutted to the spring top bracket 1732, and the other end is sleeved on the second boss 1749 and abutted to the spring bottom bracket 1736, wherein the first boss 1748 and the spring bottom bracket 1736 can play a role in guiding and stably supporting the first spring 1735, and the mechanism stability is better. As a further preferred option, the damper 173 further includes an adjusting bolt 1738, and a threaded hole is opened at the bottom of the spring seat 1737, and the adjusting bolt 1738 is engaged with the threaded hole and then extends into the spring seat 1737 and abuts against the bottom of the spring lower support 1736, so that the compression stroke of the first spring 1735 can be adjusted by adjusting the length of the adjusting bolt 1738 extending into the spring seat 1737, and the damping effect can be adjusted as required.

It can be understood that, as an alternative, a circular guiding column is extended from the side of the upper spring seat 1732 close to the bottom wall of the spring seat 1737, and the first spring 1735 is sleeved on the circular guiding column, so as to guide the first spring 1735, thereby further improving the stability of the mechanism.

It is understood that, as an alternative, the damper 173 further includes a damping washer disposed in the spring seat 1737, one end of the first spring 1735 abuts against the upper spring seat 1732, and the other end abuts against the damping washer, and the damping effect of the mechanism can be further improved by adding a damping washer to one end of the first spring 1735. In addition, a damping washer may be added between the first spring 1735 and the spring upper seat 1732, that is, two ends of the first spring 1735 are respectively abutted to the damping washer, so that the damping effect of the mechanism is better.

It can be understood that, as shown in fig. 9, as a modification, the damper 173 further includes a first support platform 1742, a second support platform 1743, and a second spring 1744, the first support platform 1742 and the second support platform 1743 are both located in the spring seat 1737 and are both arranged relatively, the first support platform 1742 and the spring upper seat 1732 are fixedly connected, the second support platform 1743 and the spring seat 1737 are fixedly connected, a pot head of the first spring 1735 is installed on the first support platform 1742, another pot head is installed on the second support platform 1743, the first support platform 1742 and the second support platform 1743 can play a role in guiding the first spring 1735, the second spring 1744 is located between the first support platform 1742 and the second support platform 1743, and one end of the second spring 1744 abuts against the first support platform 1742, and the other end abuts against the second support platform 1743. By providing at least one second spring 1744 between the first support 1742 and the second support 1743, the second spring 1744 is also compressed during vibration, thereby further improving the damping effect of the mechanism. Preferably, the first grooves 1745 are respectively formed in the surfaces of the first supporting platform 1742 and the second supporting platform 1743, the two ends of the second spring 1744 are respectively located in the two first grooves 1745, and the two first grooves 1745 limit the second spring 1744, so that the stability of the mechanism is enhanced. In addition, as a further preferred option, the damper 173 further includes a sliding bar 1746, and the first support table 1742 and the second support table 1743 have both surfaces opposite to each other formed with a second groove 1747, both ends of the sliding bar 1746 are respectively located in the two second grooves 1747 and the sliding bar 1746 can slide up and down in the two second grooves 1747, so as to control the compression amount of the first spring 1735 and the second spring 1744, avoid the first spring 1735 and the second spring 1744 from excessively extending and retracting, achieve a good protection effect on the first spring 1735 and the second spring 1744, and achieve long service lives of the first spring 1735 and the second spring 1744, a better buffering effect and a better damping effect.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A combined grain cleaning center, which is characterized in that,

comprises a storage hopper (1), a primary cleaning sieve (2), a large impurity output mechanism (3), a primary sorting gate (4), a primary spiral impurity discharging device (5), an upper air sorting box (6), a primary dust removing device (7), a secondary dust removing device (8), a fan (9), a motor (10), an air outlet pipe (11), a frame (12), a lower air sorting box (13), a secondary spiral impurity discharging device (14), a secondary sorting gate (15), a secondary winnowing device (16), a secondary cleaning sieve (17), a discharge port device (18), a primary winnowing device (19) and an air distributing device (20), the storage hopper (1), the primary cleaning sieve (2), the upwind separation box (6), the primary dust removal device (7), the secondary dust removal device (8), the fan (9), the motor (10), the downwind separation box (13) and the secondary cleaning sieve (17) are all arranged on the rack (12);

the large impurity output mechanism (3) is connected with the primary cleaning sieve (2) and used for discharging large impurities screened by the primary cleaning sieve (2), the discharge hole of the primary cleaning sieve (2) is positioned above the feed hole of the upper winnowing box (6), the discharge hole of the upper winnowing box (6) is positioned above the feed hole of the lower winnowing box (13), the motor (10) is connected with the fan (9) and used for driving the fan (9) to work, the fan (9) is respectively connected with the upper winnowing box (6) and the lower winnowing box (13) through the primary dust removal device (7), the primary dust removal device (7) is used for carrying out primary dust filtration on airflow sucked by the fan (9) from the upper winnowing box (6) and the lower winnowing box (13), and the fan (9) is also connected with the air outlet pipe (11) through the secondary dust removal device (8), the secondary dust removal device (8) is used for carrying out secondary dust filtration on air flow output by the fan (9), the air outlet pipe (11) is connected with the air distribution device (20), the air distribution device (20) is used for dividing one air flow output by the fan (9) into two air flows, the primary air separation device (19) and the secondary air separation device (16) are respectively arranged at two air outlets of the air distribution device (20) and are used for respectively conveying uniform air flows into the upper air separation box (6) and the lower air separation box (13) for air separation and impurity removal, a primary material distribution door (4) and a primary spiral impurity removal device (5) are arranged in the upper air separation box (6), the primary material distribution door (4) is close to the primary air separation device (19), a secondary spiral impurity removal device (14) and a secondary material distribution door (15) are arranged in the lower air separation box (13), and the secondary material distribution door (15) is close to the secondary air separation device (16), the primary spiral impurity discharging device (5) and the secondary spiral impurity discharging device (14) are used for discharging light impurities separated after air separation, the discharge hole of the lower air separation box (13) is located above the feed hole of the secondary cleaning sieve (17), and the discharge hole device (18) is installed at the discharge hole of the secondary cleaning sieve (17) and used for discharging grains and impurities after vibration screening respectively.

2. The modular grain cleaning center of claim 1,

the air distribution device (20) comprises an air distribution cylinder (201), a conical cylinder (202), an air inlet (203), a first air outlet (204) and a second air outlet (205), the conical cylinder (202) is arranged in an inner cavity of the air distribution cylinder (201), the air inlet (203) is respectively connected with the air distribution cylinder (201) and the air outlet pipe (11), the air distribution cylinder (201) conveys air flow in the air outlet pipe (11) to a cavity between the air distribution cylinder (201) and the conical cylinder (202) through the air inlet (203), the first air outlet (204) and the second air outlet (205) are respectively communicated with a cavity between the air distribution cylinder (201) and the conical cylinder (202), and the cavity between the air distribution cylinder (201) and the conical cylinder (202) is used for accelerating and rotating the entering air flow and then conveying the air flow to the first air outlet (204) and the second air outlet (205).

3. The modular grain cleaning center of claim 2,

and first air distribution plates (206) for uniformly outputting air flow are arranged in the inner cavities of the first air outlet (204) and the second air outlet (205).

4. The modular grain cleaning center of claim 3,

the first air distribution plate (206) comprises a plurality of partition plates which are uniformly arranged at intervals, and an airflow output channel is formed between every two adjacent partition plates.

5. The modular grain cleaning center of claim 3,

the first air distribution plate (206) is further provided with an air adjusting door (207), and the air adjusting door (207) is used for adjusting the air volume output by the first air outlet (204) and the second air outlet (205) by adjusting the opening size of the air adjusting door.

6. The modular grain cleaning center of claim 2,

first-order wind selector (19) and second grade wind selector (16) all include fixed plate (100) and second even aerofoil (101), first air outlet (204) and second air outlet (205) department are installed respectively in fixed plate (100), second even aerofoil (101) are installed on fixed plate (100) and are upwards set up to one side, second even aerofoil (101) are used for carrying out the rectification so that it is directional, evenly blow to the material to the air current of first air outlet (204) and second air outlet (205) output.

7. The modular grain cleaning center of claim 1,

second grade clearance sieve (17) are including sieve case (171), vibrating motor (172) and bumper shock absorber (173), vibrating motor (172) are installed and are used for driving sieve case (171) vibration in sieve case (171) below, bumper shock absorber (173) are connected with sieve case (171) and frame (12) respectively and are used for playing the cushioning effect, sieve case (171) are including the first layer sifter that is used for the thick miscellaneous of filtering and the second floor sifter that is used for the thin miscellaneous of filtering, discharge gate device (18) include three discharge gate in order to be used for discharging thick miscellaneous, thin miscellaneous and clean millet respectively.

8. The modular grain cleaning center of claim 7,

the shock absorber (173) comprises a sieve shaft (1731), an upper spring seat (1732), a bushing (1733), a bearing (1734), a first spring (1735), a spring seat (1737), a mounting seat (1739), a pull rod hole shaft (1740) and a positioning pull rod (1741), wherein the mounting seat (1739) is fixed on a rack (12), a first end of the sieve shaft (1731) is fixedly connected with a sieve box (171), the bearing (1734) is mounted on a second end of the sieve shaft (1731), the bushing (1733) is sleeved on the sieve shaft (1731) and is positioned between the bearing (1734) and the sieve box (171), the upper spring seat (1732) is hinged with the sieve shaft (1731), the spring seat (1737) is hinged with the mounting seat (1739), the spring seat (1737) is of a hollow structure with an opening at the upper end, the upper spring seat (1732) is covered on the opening of the upper spring seat (1737), and the upper spring seat (1732) can move up and down relative to the spring seat (1737), first spring (1735) sets up in spring holder (1737), and first spring (1735) one end and spring seat of honour (1732) butt, the other end and the diapire butt of spring holder (1737), location pull rod (1741) one end is articulated with mount pad (1739), and the other end passes through pull rod hole axle (1740) and is connected with spring holder (1737), makes spring holder (1737) rotate around mount pad (1739) through the length of adjustment location pull rod (1741), with the adjustment the vibration direction of bumper shock absorber (173) keeps unanimous with the vibration direction of vibrating motor (172).

9. The modular grain cleaning center of claim 8,

bumper shock absorber (173) still hold in the palm under the spring that sets up in spring holder (1737) (1736), one side that spring upper bracket (1732) are close to spring lower bracket (1736) is provided with first boss (1748), one side that spring lower bracket (1736) are close to spring upper bracket (1732) is provided with second boss (1749), the pot head of first spring (1735) is established on first boss (1748) and with spring upper bracket (1732) butt, another pot head is established on second boss (1749) and with spring lower bracket (1736) butt.

10. The modular grain cleaning center of claim 9,

the shock absorber (173) further comprises an adjusting bolt (1738), a threaded hole is formed in the bottom of the spring seat (1737), and the adjusting bolt (1738) is matched with the threaded hole and then extends into the spring seat (1737) to abut against the lower spring support (1736).

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