CN111442090A - Sealing structure and lint cleaning machine - Google Patents

Abstract

The invention discloses a sealing structure and a lint cleaner, wherein the sealing structure is suitable for the lint cleaner with a stripping roller and a feeding roller, and comprises the following components: the upper sealing structure is used for sealing between the middle rear cotton stripping roller of the cotton stripping rollers and the middle rear wallboard of the ginned cotton cleaning machine; and the lower sealing structure is used for sealing the middle and rear cotton feeding rollers of the cotton feeding rollers and the cotton picking plate of the lint cleaning machine. The invention has better sealing performance.

Description

Sealing structure and lint cleaning machine

Technical Field

The invention relates to a sealing structure for sealing the rear side of a cotton layer conveying mechanism for conveying a cotton layer from a dust cage net surface to a licker-in a lint cotton cleaner, and also relates to the lint cotton cleaner with the sealing structure.

Background

Citations of documents in order of disclosure:

the first patent document: chinese patent document CN2793106Y, entitled improved lint picker, published 2006.07.05;

the second patent document: chinese patent document CN205258699U, entitled needle type lint cleaning machine, published japanese 2016.05.25;

the third patent document: chinese patent document CN209906945U, entitled lint cleaning machine, published japanese 2020.01.07.

The first patent document is the earlier patent document related to lint pickers in China, and the principle of the lint pickers is clearly explained. Specifically, a cotton layer adsorbed by a dust cage in a lint picker is peeled off by a pair of stripping rollers located below the dust cage, and the peeled cotton layer is nipped by a pair of feed rollers located below the stripping rollers and conveyed downward to a licker-in. Wherein, the one end of dust cage generally connects the equipment that is used for the induced air, forms the negative pressure in the dust cage, and the lint that makes to enter from the cotton mouth of advancing can adsorb on the dust cage wire side. In order to prevent the impurities or lint in the lower hopper from being sucked away, the assembly formed by the stripping roller and the dust cage needs to be sealed to the lower hopper.

In the first patent document, a pair of stripping rollers are provided with a sealing plate on each of the front and rear sides of the upper hopper, the sealing plate on the rear side being provided with a dividing plate which cooperates with the rear feed roller to form a further seal. In this first patent document, no consideration is given to the sealing between the rear feed roller and the picker plate, and in actual use, a certain distance is left between the rear feed roller and the picker plate, and a small amount of lint which is not removed cleanly for the picker plate may be ejected from this position, and may accumulate over a slightly long period of time, although not much.

The second and third patent documents are similar in technology, and the cotton feeding roller is omitted in structure, but in principle, the sealing structure considered by the two patent documents is mainly the problem of sealing between the upper and lower cotton boxes, but is slightly different.

However, the rear-stripping roller, which is a component identified as a cotton-pressing roller in the second patent document, and the seal of the dust cage induced air force against the lower cotton box are seals to the rear side of the rear-stripping roller by using a seal plate, and such a seal structure cannot be extended to the region between the rear-stripping roller and the cotton-picking plate, and the problem of residual lint ejection in this region cannot be solved.

In the third patent document, the sealing of the dust cage induced draft against the lower hopper is performed by moving down the sealing structure on the rear side of the rear doffing roller by using a sealing plate, and is directly configured as a seal between the rear doffing roller and the cotton picker plate. The structure seems to solve the problem that the sealing of the dust cage induced wind force relative to the lower cotton box is realized by adopting the sealing plate to seal the rear side of the rear cotton stripping roller and the cotton picking plate, however, after the dust cage is stripped by the cotton stripping roller, the net surface of the lower part of the rear side of the dust cage is fully communicated, and the lower rear side of the upper cotton box and the upper rear side area of the lower cotton box can generate larger negative pressure. The sealing structure between the rear cotton stripping roller and the cotton picking plate is a structure with a relatively complex structure, the whole sealing gap is more, and the rear cotton stripping roller rotating clockwise is easy to carry out a certain amount of cotton fibers and enters a negative pressure area under the negative pressure condition.

As a result of investigation, it was found that, in the first patent document having two pairs of rollers, cotton fibers are ejected from the area between the rear feed roller and the picker plate, and if there is a seal, not the rear side of the rear doffing roller, but the seal is dynamic, the sealing effect is relatively poor, and a negative pressure area is still generated on the rear side of the rear doffing roller. Similarly, even if the sealing structure moves downward in the third patent document, the negative pressure in the negative pressure region is greater because of the dynamic seal, particularly in the case where the negative pressure region is directly connected to the region where the dust cage is located.

Disclosure of Invention

In view of the above, the present invention provides a sealing structure with good sealing performance for a lint picker having a feed roller and a stripping roller, and also provides a lint picker having the sealing structure.

In an embodiment of the present invention, there is provided a sealing structure adapted for a lint picker having a doffing roller and a feed roller, the sealing structure comprising:

the upper sealing structure is used for sealing between the middle rear cotton stripping roller of the cotton stripping rollers and the middle rear wallboard of the ginned cotton cleaning machine;

and the lower sealing structure is used for sealing the middle and rear cotton feeding rollers of the cotton feeding rollers and the cotton picking plate of the lint cleaning machine.

Optionally, the cotton picker further comprises a middle sealing structure arranged at the rear side between the rear cotton stripping roller and the rear cotton feeding roller.

Optionally, the middle sealing structure comprises:

the crossbeam is positioned at the rear side of the space between the rear cotton stripping roller and the rear cotton feeding roller, and the end part of the crossbeam is assembled with the side wall plate where the cotton box is positioned through an adjustable structure, so that the position of the crossbeam can be adjusted;

and the scraping plate is arranged on the cross beam, the upper part of the scraping plate is in sealed movable fit with the rear side of the rear cotton stripping roller, and the lower part of the scraping plate is in sealed movable fit with the rear side of the rear cotton feeding roller.

Optionally, the adjustable structure is configured to:

one of the end part of the cross beam and the corresponding side wall plate is provided with a long hole, and the other end of the cross beam is provided with a bolt hole;

the assembly is carried out by adapting bolts through the elongated holes and the bolt holes.

Optionally, the squeegee comprises:

the plate body is used for assembling the scraper on the cross beam;

the matching parts are respectively arranged at two ends of the plate body and are parts or structural parts matched between the scraping plate and the rear cotton stripping roller or the rear cotton feeding roller.

Optionally, the plate body and the matching part are constructed into a whole, and the scraper is an elastic sealing part or a polytetrafluoroethylene sliding plate correspondingly; or

The plate body is a rigid component, and the matching part is an elastic sealing component which is adhered on the plate body through screws, rivets or bonding.

Optionally, the lower sealing structure comprises:

a base part fixed on a seat of a cotton picking plate in the lint picker and extending forwards;

the lower end of the joint part is fixedly arranged on the base part or is in an integral structure with the base part, and the upper front side of the joint part is in movable fit sealing with the rear cotton feeding roller.

Optionally, the joint part is a rubber sheet, and the base part is a sheet metal part;

the rubber sheet and the base are bonded, riveted or fixedly connected through screws.

Optionally, the rubber sheet is movably matched with the rear cotton feeding roller to bend the rubber sheet, and an included angle between two parts formed by bending is greater than or equal to 100 degrees and smaller than or equal to 150 degrees.

Optionally, the base is an arcuate plate that is coaxial with the licker-in.

Optionally, the side of the base remote from the lickerin roll is provided with a reinforcing structure.

Optionally, the base is integrally formed with a member for defining an upper wall of the outlet channel of the lint picker.

Optionally, the upper sealing structure comprises a fixed plate extending from the rear wall plate to the rear cotton stripping roller and a rubber sheet mounted at the extending end of the fixed plate and movably matched with the rear cotton stripping roller;

the fixed plate is connected with the left wall plate and the right wall plate in a static sealing way.

In an embodiment of the invention, the ginned cotton cleaning machine with the sealing structure is also provided.

Optionally, determining that a lower channel plate of the ginned cotton channel is an air supplementing plate;

the rear end of the air supplementing plate is a fixed end, the front end of the air supplementing plate is an adjusting end, and the front end of the air supplementing plate is located below the licker-in and forms an air supplementing opening with the licker-in.

Optionally, the front end of the air supply plate is supported on a beam member, and the beam member is connected with the wall plate through an adjustable connecting structure so as to adjust the size of the air supply opening.

Compared with the structure that the three patent documents cited in the background technology part are sheltered from wind at a single position on the rear side of the rear cotton stripping roller and the rear cotton feeding roller, in the embodiment of the invention, an upper sealing structure is provided, wherein the upper sealing structure is used for sealing between the rear cotton stripping roller and a rear wall plate in a lint cleaning machine, a negative pressure space formed by induced wind of a dust cage forms a first-stage seal relative to a lower cotton box, and under the condition, the negative pressure of the space below the upper sealing structure is relatively small. Further, the lower seal structure is used for directly sealing the space between the cotton picking plate and the rear cotton feeding roller in the cotton feeding roller and the cotton picking plate in the lint picker, so that lint remaining on the licker-in is prevented from being sucked into the space between the upper seal structure and the lower seal structure. In conclusion, the negative pressure formed by the induced air of the dust cage has two-stage sealing relative to the licker-in at the rear side, and has better sealing effect.

Drawings

FIG. 1 is a schematic view of the structure of a lint picker in an embodiment.

FIG. 2 is a schematic diagram of a cotton layer conveying mechanism of the lint picker in one embodiment.

FIG. 3 is a schematic view showing an assembly structure of front and rear feed rollers on a lint picker in one embodiment.

In the figure: 1. support leg, 2, impurity smoothing plate, 3, flanging, 4, air supply opening, 5, licker-in, 6, impurity removing knife, 7, lower cotton box, 8, upper cotton box, 9, front sealing rubber, 10, front stripping roller, 11, air duct front wall plate, 12, dust cage, 13, air duct, 14, cotton inlet, 15, sealing rubber, 16, rear stripping roller, 17, rear sealing rubber, 18, lower supporting plate, 19, roller scraper component, 20, front feeding roller, 21, rear feeding roller, 22, sealing plate, 23, cotton smoothing plate, 24, cotton removing plate component, 25, cotton outlet, 26, air supply plate, 27, mounting seat, 28, long hole, 29, bolt, 30, nut, 31, flat washer, 32, spring washer, 33, bolt, 34, nut, 35, flat washer, 36, bolt hole, 37, 38, cross beam, 39, scraper, 40, sealing rubber, 41, support seat, 42, front cotton pulling shaft, 43. rear cotton feeding roller shaft, 44 guide holes, 45 bearing seats, 46 spring guide post assemblies.

Detailed Description

Because more cotton processing machines rely on wind power for transportation, a relatively closed box is often required to be arranged on the structure of the cotton processing machine. The panels surrounding the box are commonly referred to as wall panels.

In orientation, cotton processing machines have a defined front and rear, and corresponding left and right, based on material flow.

The cleaning machine is divided into a lint cleaning machine and a seed cotton cleaning machine, and the sealing structure provided by the embodiment of the invention is particularly suitable for the lint cleaning machine with a stripping roller and a feeding roller.

The lint picker arrangement shown in fig. 1 is a common, but not the only, structure of a lint picker, but in most lint pickers, the two lint pickers used to peel the lint picked up by the cage 12 are in substantially vertical relationship with the two feed rollers used to feed the lint picked up by the two lint pickers downward, but the positions are offset in the horizontal direction according to different options.

In the structure shown in fig. 1 and 2, three sealing structures are provided at the rear-side rear doffing roller 16 and the rear feed roller 21 in the hopper, and are sequentially referred to as an upper sealing structure, a middle sealing structure and a lower sealing structure from top to bottom.

The background art relates to three patent documents, wherein the first patent document only considers an upper sealing structure and a middle sealing structure, the second patent document is equivalent to only one sealing structure, after the dust cage 12 is stripped by the rear stripping roller 21 to strip the adsorbed cotton layer, meshes are directly exposed, and a higher negative pressure is formed in the lower right side area of the dust cage 12 in fig. 1, and for the second patent document, only one sealing structure is used, so that a better sealing effect is difficult to obtain, and a higher negative pressure exists at the rear feeding roller 21 and the cotton picking plate assembly 24, so that the ginned cotton remained on the licker-in roller 5 is easily sucked out.

In an embodiment of the invention, as shown in fig. 1, at least two sealing structures are provided to avoid that lint remaining on the licker-in 5 is sucked out. Specifically, the upper sealing structure and the lower sealing structure, wherein the upper sealing structure is used for sealing between the rear doffing roller 16 and a rear wallboard of the ginned cotton cleaning machine, such as a rear sealing rubber 17 shown in fig. 1, and a lower supporting plate 18 for providing support for the rear sealing rubber 17.

With respect to the lower seal structure, in the structure shown in fig. 1 and 2, for sealing between the rear feed roller 21 and the picker plate assembly 24, the closure plate 22 shown in fig. 1.

Based on the above structure, the upper sealing structure forms the first stage seal, such as the dynamic seal between the back stripper rubber and the back stripper roller shown in fig. 1, and even if there is leakage, the burden of the second stage seal, namely the lower sealing structure, is greatly reduced.

The lower sealing structure is used for directly sealing the opening between the back cotton feeding roller 21 and the cotton picking plate assembly 24, and can effectively avoid the discharge of residual lint on the licker-in 5 under the condition that the upper sealing structure exists.

For the middle sealing structure, which can be seen in the middle of fig. 1 and the right middle of fig. 2, the structure shown in fig. 2 is a partial structure of fig. 1, which is denoted as a cotton layer conveying mechanism, and is an assembly for conveying a cotton layer from a dust cage to a licker-in a lint picker, and in the structure shown in fig. 2, the cotton layer conveying mechanism includes two cotton stripping rollers, two cotton feeding rollers, and a roller scraper component 19 which is movably sealed at the rear side.

In fig. 2, two doffing rollers are arranged azimuthally one behind the other, typically mounted on left and right wall panels by bearings. Specifically, in fig. 2, one is a front doffing roller 10, and the other is a rear doffing roller 16 which is located behind the front doffing roller 10 and forms a cotton feeding gap with the front doffing roller 1.

It will be appreciated that the component for stripping lint from the cage 12 is primarily the rear doffer roller 16, and that the front doffer roller 10 is turned opposite to the rear doffer roller 16 to pinch the lint stripped off the rear doffer roller 16 downwardly.

Generally speaking, a certain height difference exists between the front cotton stripping roller 10 and the rear cotton stripping roller 16, and when the front cotton stripping roller 10 and the rear cotton stripping roller 16 are respectively arranged at two sides of a vertical symmetrical plane of the dust cage 12 passing through the axis thereof, a gap is left between the front cotton stripping roller 10 and the dust cage 12, and the rotation direction of the front cotton stripping roller is opposite to that of the dust cage 12.

The back stripper roller 16 is often in substantial contact with the cage 12 for stripping lint from the cage 12, with the back stripper roller 16 generally turning in the same direction as the cage 12.

Regarding the height difference, two cotton stripping rollers are respectively arranged on two sides of the middle section of the dust cage 12 passing through the axis of the dust cage itself by adding a corresponding reference system;

the front doffer roller 10 is offset downward relative to the rear doffer roller 16, and the offset is based on the axes of the two doffer rollers.

Preferably, the front doffing roller 10 is offset downward relative to the rear doffing roller 16 by an offset amount of 0.037 to 0.040 times the radius of the doffing roller.

Because the pure two cotton stripping rollers that use can make the cotton layer state of the ginned cotton of downward transport unstable, especially the cotton stripping roller is individual relatively great, if directly cooperate with licker-in 5, the triangle district that forms is relatively great, in other words, the uncontrollable spatial distance that the ginned cotton passed through is relatively great, unstable ginned cotton layer is for licker-in 5 winding back, the cotton layer thickness that forms on licker-in 5 is inconsistent, lead to the cleaning performance to worsen, and can produce the damage to cotton fiber, and the impurity that discharges that produces contains more cotton fiber, the so-called white cotton phenomenon of discharging.

Therefore, a pair of feed rollers needs to be arranged below the two cotton stripping rollers, and the individual feed rollers are relatively small, so that the triangular area formed by the relatively small feed rollers is relatively small, and the unstable state caused by the downward feeding of the two cotton stripping rollers is eliminated based on the pulling generated by the pinching, namely, the cotton layer between the two cotton stripping rollers and the two feed rollers is pulled, so that the partial cotton layer is straightened, and the cotton layer with the relatively uniform thickness is favorably formed on the licker-in 5.

In particular, the linear velocity of the feed roller can be made slightly greater than the linear velocity of the stripping roller by the speed distribution, and the above-mentioned straightening further appears as elongation, whereby the thickness of the cotton layer on the licker-in 5 can be adjusted.

It can be understood that the thinner cotton layer is beneficial to improving the impurity discharging rate and can improve the adaptability of the impurity discharging knives 6, and particularly, the number of the impurity discharging knives 6 can be further reduced.

More specifically, one of the two feed rollers is a front feed roller 20, and the other is a rear feed roller 21 which is located behind the front feed roller 20 and forms a feed gap with the front feed roller 20.

In order to reduce the influence of wind and stabilize the state of the cotton layer in the descending process, the rear sides of the rear doffing roller 16 and the rear feed roller 21 need to be sealed.

In the structure shown in fig. 2, a beam 38 is provided, and a scraper 39 is mounted on the beam 38, the upper part of the scraper 39 is movably matched with the rear side of the rear cotton stripping roller 16, and the lower part is movably matched with the rear side of the rear cotton feeding roller 21 to form a seal.

The cross beam 38 may be made of rectangular steel pipe or may be made of a section bar such as a channel steel, and in the structure shown in fig. 2, the cross section of the cross beam 38 is substantially in a right-angled trapezoidal structure so as to be adapted to the shape and positional relationship of the rear doffer roller 16 and the rear feed roller 21.

The two ends of the cross beam 38 may be plates welded to the body of the cross beam 38 by welding, and the plates are directly or indirectly connected to the wall panels on the corresponding sides, and the connection is adjustable, and is adjustable to a position, so as to adjust the position of the cross beam 38, thereby adjusting the components on the cross beam 38.

As for the position adjustment structure of the cross beam 38, an adjustment structure by a mechanism may be adopted, for example, both ends of the cross beam 38 are driven by one linear motion mechanism, for example, and at the time of adjustment, the relevant linear motion mechanism is driven to realize the position adjustment of the cross beam 38.

In some embodiments, the adjustable structure is configured to:

one of the ends of the cross beam 38 and the corresponding side wall plate is provided with a long hole, and the other end is provided with a bolt hole;

the assembly is carried out by adapting bolts through the elongated holes and the bolt holes.

The assembly fastener can be seen in fig. 2 as bolt 33, nut 34 and flat washer 35. instead of flat washer 35, spring washer 32 can be used, and flat washer 35 and spring washer 32 can be used together.

The elongated hole may be a straight hole or an arc hole.

The structure of the scraping plate 39 may be a single structure or an assembly structure, and in some embodiments, the scraping plate 39 includes a plate body and a matching portion, where the plate body is used for assembling the scraping plate 39 on the cross beam 38, and the assembly between the plate body and the cross beam 38 may be implemented by using screws or by using an adhesive structure.

For screw attachment, the plate body may be provided with a plurality of screw holes for attachment to the cross beam 38 with screws.

Further, riveting, for example, may also be employed.

The rigid plate body is not easy to adjust the assembling error, and for this reason, the fitting portion is a component or a structural portion which is fitted between the blade and the rear doffing roller 16 or the rear feed roller 21, and is provided at each of both ends of the plate body.

The fitting portion is adapted to the aforementioned assembly structure of the squeegee 39 when it is a component, and is adapted to the aforementioned single structure of the squeegee 39 when it is a structural portion.

When the scraper 39 is a single structure, the scraper itself may have a relatively high rigidity, and may have a certain elasticity as a plate body, so as to reduce the influence of assembly errors and manufacturing errors.

In some embodiments, the plate body and the mating portion are integrally formed, i.e., the scraper 39 is a single piece, and the scraper 39 is a resilient sealing member, such as a rubber sheet, or a sliding plate, such as a teflon plate.

In some embodiments, the plate body is a rigid member, such as a steel plate, and the mating portion is a resilient sealing member, such as a rubber sheet, that is attached to the plate body by screws, rivets, or adhesive.

As described above, although the rollers are used for different purposes, it is common knowledge in the art that the doffing roller and the feed roller are not the same. In the embodiment of the invention, the diameter of the stripping roller is 110-200 mm, the diameter of the feeding roller is 50-100 mm, in other words, the stripping roller is relatively slightly larger.

Correspondingly, the diameter relationship between the stripping roller and the feed roller is positive, i.e. the larger stripping roller is adapted to the larger feed roller and the smaller stripping roller is adapted to the smaller feed roller.

In some embodiments, the feed roller is positively correlated with the width of the lint picker, and when the width is large, the middle of the feed roller is suspended long and is easy to generate flexural deformation, so that large swing is generated during high-speed rotation.

Under the condition that the integral rigidity can be ensured, the smaller the cotton feeding roller is, the better the cotton feeding roller is, so that the distance between the clamping part of the cotton feeding roller and the licker-in 5 is as small as possible, and the stability of the delivery of the ginned cotton is ensured.

The predetermined distance is a distance between a center point of a center line of the two doffing rollers and a center point of a center line of the two feeding rollers;

the given distance is 100-300 mm.

In some embodiments, the front feed roller 20 is positionally fixed in a direction opposite to the rear feed roller 21; accordingly, the rear feed roller 21 is positionally floated in the direction opposite to the front feed roller 20, so that when the cotton layer is relatively thick, the rear feed roller 21 moves in the opposite direction to the front feed roller 10, the feed gap is enlarged, and damage to the feed roller support structure is reduced.

In the configuration shown in fig. 3, the support member supporting the rear feed roller 21 is guided by a guide member or guide structure in the direction opposite to the front feed roller 20, as shown by the guide hole 44 in fig. 3, and accordingly, the support member is configured as a bearing seat 45, and the bearing seat 45 is guided to the guide hole 44.

Furthermore, an elastic support is arranged on the side of the rear cotton feeding roller 21 opposite to the front cotton feeding roller 20.

With respect to the structure shown in fig. 3, there is a spring guide post assembly 46, shown as a structure at one end of the rear feed roller shaft 43, for example, and the same structure exists at the other end of the rear feed roller shaft 43.

The spring guide post assemblies 46 are mounted on respective side wall panels or other relatively fixed structures, with the push rods of the spring guide post assemblies 46 bearing against the rear side of the bearing blocks 45 to provide a floating bearing for the bearing blocks 45.

With respect to the specific construction of the lower seal structure, it can be seen from fig. 2 that a sealing plate 22 is included as a base portion for mounting a joint, which may be, for example, a stripper rubber 40, to achieve a better seal.

The sealing plate 22 is mainly made of sheet metal to obtain high rigidity.

Reference may be made to the intermediate seal structure as described above with respect to the configuration of the lower seal structure, which is described in greater detail above. Specifically, the base portion and the joint portion may be integrally structured, or may be assembled with each other.

When a unitary structure is used, for example, a teflon slide or similar structure, such as a modified teflon slide, is used.

Wherein the base part is fixed on a seat of a cotton picking plate in the lint picker and extends forwards.

The lower end of the joint part is fixedly arranged on the base part or is integrated with the base part into a whole structure, and the upper front side of the joint part is movably matched and sealed with the rear cotton feeding roller 21.

In a preferred embodiment, the sealing rubber 40 is movably matched with the rear cotton feeding roller 21 to bend the sealing rubber 40, and an included angle between two parts formed by bending is more than or equal to 100 degrees and less than or equal to 150 degrees. The included angle should not be too large, otherwise the sealing rubber 40 would be too flexible and easily damaged. It is not too small, because the sealing performance of the sealing rubber 40 depends on the magnitude of the positive pressure, and the positive pressure is generated by the resilience of the sealing rubber 40, and a better fit is not easily generated by an excessively small included angle.

Preferably, in fig. 2, the sealing plate 22 is an arc-shaped plate body, which is coaxial with the lickerin roll.

Further, the side of the base remote from the lickerin roll 5 is provided with a reinforcing structure. In some embodiments, as shown in fig. 2, an angle member is welded to the back side of the sealing plate 22, i.e. the side remote from the lickerin roll 5, to improve the overall rigidity.

In some embodiments, the hush plate 22 may also be welded with other types of reinforcing structures, such as ribs around the periphery of the lickerin 5.

In the structure shown in fig. 1, the cotton aligning plate 23 and the sealing plate 22 are integrally formed by bending a single steel plate. The cotton-following plate 23 is an upper wall plate of a cotton outlet channel in the lint cotton cleaner.

In fig. 1, seven trash removal knives 6 are provided, and relatively speaking, the more the number of the trash removal knives 6 is, the better the effect is, and the number of the trash removal knives 6 is seven or eight in the embodiment of the invention, and the larger the damage to the cotton fiber is caused by the excessive number of the trash removal knives 6.

The lower side of the last impurity removing knife 6 is provided with an impurity removing plate 2 for removing the impurities cut by the impurity removing knife 6.

The bottom plate of the lower hopper 7 on the lower side of the impurity plate 2 is opened for discharging impurities.

On the underside of the lower hopper 7 of fig. 1, the component for constructing the lower wall plate of the cotton passage is the air supply plate 26 shown in fig. 1, and the rear end of the air supply plate 26, i.e., the right end of fig. 1, is the fixed end thereof and can be fixed on the rear wall plate of the lower hopper 7 by screws.

The left and right sides of the air supplement plate 26 are joined to and not connected to the left and right panels, and the front end of the air supplement plate 26 is an adjustment end, or the vertical adjustment of the air supplement plate 26 causes the distance between the front end of the air supplement plate 26 and the taker-in roller 5 to be changed. The front end of the air supply plate 26 is positioned below the licker-in 5, and an air supply opening 4 is formed between the air supply plate and the licker-in 5 so as to ensure that the lint layer is smoothly led out.

In fig. 1, the front end of the air supply plate 26 is supported on a beam member, and the beam member is connected with the wall plate through an adjustable connecting structure to adjust the size of the air supply opening 26.

In the figure, two ends of the beam are respectively provided with a mounting seat 27, the mounting seats 27 are plates, the mounting seats 27 are provided with elongated holes 28, the elongated holes 28 are matched with bolts 29 for assembly, and the size of the air supply opening 26 can be adjusted by adjusting the positions of the mounting seats 27 on the wall plate.

Further, as to the upper sealing structure, which is relatively conventional in fig. 1, the upper sealing structure includes a fixing plate extending from the rear wall plate toward the rear doffer roller 16, i.e., a lower blade 18 shown in fig. 1, and a rubber sheet, i.e., a rear sealing rubber sheet 17 shown in the drawing, which is movably fitted between the extended end of the lower blade 18 and the rear doffer roller 16.

The bottom bracket 18 is sealingly attached to the left and right panels, and in a preferred construction, may be attached, for example, by welding.

Because of static connection, sealing is easy to realize, and a welding mode is not needed. The bottom plate 18 is a sheet metal part, and a rubber strip is pressed between the sheet metal part and the wallboard, so that better sealing performance is easily obtained.

Claims (16)

1. A seal structure adapted for a lint picker having a doffing roller and a feed roller, said seal structure comprising:

the upper sealing structure is used for sealing between the middle rear cotton stripping roller of the cotton stripping rollers and the middle rear wallboard of the ginned cotton cleaning machine;

and the lower sealing structure is used for sealing the middle and rear cotton feeding rollers of the cotton feeding rollers and the cotton picking plate of the lint cleaning machine.

2. The seal structure of claim 1, further comprising a middle seal structure disposed at a rear side between the rear doffer roller and the rear feed roller.

3. The seal structure of claim 2, wherein the middle seal structure comprises:

the crossbeam is positioned at the rear side of the space between the rear cotton stripping roller and the rear cotton feeding roller, and the end part of the crossbeam is assembled with the side wall plate where the cotton box is positioned through an adjustable structure, so that the position of the crossbeam can be adjusted;

and the scraping plate is arranged on the cross beam, the upper part of the scraping plate is in sealed movable fit with the rear side of the rear cotton stripping roller, and the lower part of the scraping plate is in sealed movable fit with the rear side of the rear cotton feeding roller.

4. The sealing structure of claim 3, wherein the adjustable structure is configured to:

one of the end part of the cross beam and the corresponding side wall plate is provided with a long hole, and the other end of the cross beam is provided with a bolt hole;

the assembly is carried out by adapting bolts through the elongated holes and the bolt holes.

5. The seal structure according to claim 2 or 3, characterized in that the scraper includes:

the plate body is used for assembling the scraper on the cross beam;

the matching parts are respectively arranged at two ends of the plate body and are parts or structural parts matched between the scraping plate and the rear cotton stripping roller or the rear cotton feeding roller.

6. A sealing arrangement according to claim 5, characterised in that the plate body is constructed in one piece with the mating portion, the scraper being correspondingly an elastic sealing member or a teflon slide; or

The plate body is a rigid component, and the matching part is an elastic sealing component which is adhered on the plate body through screws, rivets or bonding.

7. The seal structure of claim 1, wherein the lower seal structure comprises:

a base part fixed on a seat of a cotton picking plate in the lint picker and extending forwards;

the lower end of the joint part is fixedly arranged on the base part or is in an integral structure with the base part, and the upper front side of the joint part is in movable fit sealing with the rear cotton feeding roller.

8. The seal structure of claim 7, wherein the engaging portion is a rubber and the base portion is a sheet metal part;

the rubber sheet and the base are bonded, riveted or fixedly connected through screws.

9. The seal structure of claim 8, wherein the rubber sheet is bent by a movable fit between the rubber sheet and the back feed roller, and an included angle between two portions formed by bending is not less than 100 degrees and not more than 150 degrees.

10. A sealing arrangement according to claim 7, characterised in that the base part is an arcuate plate which is coaxial with the lickerin roll.

11. A sealing arrangement according to claim 7 or 10, characterised in that the side of the base remote from the lickerin is provided with a stiffening arrangement.

12. The seal structure of claim 7, wherein the base portion is integrally formed with a member defining an upper wall of the lint picker passage.

13. The sealing structure of claim 1, wherein the upper sealing structure comprises a fixing plate extending from the rear wall plate to the rear cotton stripping roller and a rubber sheet mounted at the extending end of the fixing plate and movably matched with the rear cotton stripping roller;

the fixed plate is connected with the left wall plate and the right wall plate in a static sealing way.

14. A lint picker having the sealing structure of any one of claims 1 to 13.

15. A lint picker as claimed in claim 14, wherein the lower channel plate defining the lint channel is a complementary air plate;

the rear end of the air supplementing plate is a fixed end, the front end of the air supplementing plate is an adjusting end, and the front end of the air supplementing plate is located below the licker-in and forms an air supplementing opening with the licker-in.

16. The lint picker of claim 15, wherein the front end of the air supply plate is supported by a beam member, and the beam member is connected to the wall plate by an adjustable connection structure to adjust the size of the air supply opening.

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