Back batten, batten set and seed cleaner

Abstract

The application discloses a back lattice, a lattice group and a seed cotton cleaning machine, wherein the back lattice applied to the seed cotton cleaning machine is continuously arrayed with lattices on a predetermined index arc to form a lattice group; the lattices contained in the lattice group have two groups, the midpoint of the first group is located at the lower side of a back spike roller, and the front end of the first group is the front end of the lattice group; the midpoint of the second group is located at the back side of the back spike roller, and the back end of the second group is the back end of the lattice group; in a vertical plane perpendicular to the axis of the spike roller, the direction perpendicular to the arrangement of the spike roller group is the positive up-down direction. The back lattice according to the application can effectively improve the cleaning efficiency.

Description

Technical Field

[0001] This invention relates to a rear grid bar for a cotton cleaning machine, and also to a grid bar assembly equipped with the rear grid bar, and a cotton cleaning machine equipped with the grid bar assembly. Background Technology

[0002] In cotton processing, the main equipment used for cleaning seed cotton is the seed cotton cleaning machine. There are many types, but the most widely used include the inclined seed cotton cleaning machine, the recycling seed cotton cleaning machine, and the double-layer grading seed cotton cleaning machine. The cleaning section of these seed cotton cleaning machines includes a barbed roller assembly and a grid assembly. The grid corresponds one-to-one with the barbed rollers, and the grid is usually located below the barbed rollers. The grid bars are generally arranged in a given indexed circular arc array, with a cleaning gap between the grid bars and the top circle of the barbed rollers. This gap also allows for the discharge of impurities. The working principle of the cleaning section is that under the impact of the rotating barbed rollers, the seed cotton is conveyed along the direction of the barbed roller assembly by the continuous impact of each barbed roller. This also determines the front and back direction; that is, the direction of seed cotton flow is forward, and vice versa.

[0003] In addition, the seed cotton conveyed by the spiked roller from back to front will be simultaneously pried open and shaken, so that impurities such as bolls and cotton leaves adhering to the surface of the seed cotton will be discharged from the gaps between the grid strips under the action of gravity and centrifugal force, and after friction and impact with the grid strips.

[0004] The grid used in the market today is mostly composed of front and rear side support plates, left and right side end plates, several intermediate partitions distributed between the left and right side end plates and parallel to the left and right side end plates, and a set of grid strips fixed at both ends to the left and right side end plates and supported on the intermediate partitions. Among them, the grid in the inclined seed cotton cleaning machine is composed of three types of grids: front grid, middle grid, and rear grid. Generally, the front grid is the grid on the frontmost side, the rear grid is the grid on the backmost side, and the rest are middle grids.

[0005] With the improvement of production line processing capacity and production efficiency, the width of seed cleaning machines on the market (which can be understood as the distance between the left and right end plates or the length of the barbed roller functional part) is basically 3200mm or more, resulting in the overall length of the grid also being over 3200mm. Currently, there are even seed cotton cleaning machines with a width of 6000mm. Under this technological background, two main technical problems have been found in the manufacturing and operation of the grid.

[0006] The first technical issue is that the spiked roller assembly and the grid assembly within the seed cotton cleaning box are arranged vertically. Seed cotton enters the cleaning box of the seed cotton cleaner from top to bottom and first falls onto the spiked roller assembly. The seed cotton initially moves in reverse, from front to back. During this process, when the seed cotton is driven by the rotation of the spiked rollers to the last spiked roller, it is blocked by the rear wall plate of the cleaning chamber. As the last spiked roller rotates and pulls, the seed cotton enters the space between the spiked roller assembly and the grid assembly, and moves upwards. In terms of position, because the traditional grid assembly is located below the centerline of the spiked roller it mates with (equivalent to being less than or equal to half-wrapped) below the spiked roller, the seed cotton only comes into contact with the grid assembly when it rotates below or further below the centerline of the spiked roller. Through impact and friction with the grid assembly, impurities are discharged. During this impurity removal process, it was found that with a fixed number of spiked roller and grid assembly groups, the impurity removal stroke is relatively short, resulting in relatively low cleaning efficiency.

[0007] The second technical problem, as mentioned earlier, is that as the machine width of the cotton cleaning machine increases, the corresponding grid strips also become longer. This increases the machine's weight, and even with intermediate partitions, the limited number of partitions (affecting impurity removal efficiency) makes grid strip deflection unavoidable. Furthermore, after the grid strips are installed on the machine, the excessive length of the machine, combined with its own weight, easily causes the front and rear support plates of the grid strips to deform, resulting in downward deflection in the middle section. Consequently, the spacing between the two ends and the middle section of the grid strips cannot be aligned with the spacing of the spiked rollers, affecting the impurity removal effect.

[0008] The above two technical issues are only for the convenience of explaining the main technical issues at one time, and do not mean that the invention content must solve all the technical issues. Summary of the Invention

[0009] To address the first technical problem, embodiments of the present invention provide a rear grid that can effectively improve the cleaning efficiency; embodiments of the present invention also provide a grid assembly equipped with the rear grid, and further provide a seed cotton cleaning machine equipped with the grid assembly.

[0010] According to a first aspect of the present invention, a rear grid is provided for use in a seed cotton cleaning machine, wherein the rear grid has grids continuously arrayed on a predetermined indexing arc to form a grid group;

[0011] The grid strip group includes two sets of grid strips. The midpoint of the first set is located directly below the rear spike roller, and the front end of the first set is the front end of the grid strip group. The midpoint of the second set is located behind the rear spike roller, and the rear end of the second set is the rear end of the grid strip group.

[0012] In a vertical plane with the axis of the spiked roller as the normal, the direction perpendicular to the arrangement of the spiked roller group is the up and down direction.

[0013] Optionally, the second central angle of the arc segment corresponding to the second group is 60% to 75% of the first central angle of the arc segment corresponding to the first group.

[0014] Optionally, the second central angle is 67% to 71% of the first central angle.

[0015] Optionally, the lower end of the front support plate of the rear grid extends downward relative to the end plate and bends to form a reinforcing plate.

[0016] According to a second aspect of the present invention, a grid assembly is provided, including the rear grid assembly provided in the first aspect of the present invention.

[0017] Optionally, the lower end of at least one of the support plates adjacent to other grid bars extends downward and bends relative to the end plate of the grid bar to form a base reinforcement plate.

[0018] Optionally, the length of the base reinforcement plate is 0.25 to 0.35 times the length of the main support plate.

[0019] Optionally, the included angle between the base reinforcement plate and the main support plate is 140°~150°.

[0020] Optionally, the bending directions of adjacent foundation reinforcement plates between adjacent grid bars are the same or opposite;

[0021] If they are the same, when bending, the outer base reinforcement plate and the corresponding support plate are provided with an extension of the main plane of the continuing support plate, which is used to avoid the corresponding inner base reinforcement plate.

[0022] According to a third aspect of the present invention, a seed cotton cleaning machine is provided, including the grid assembly described in the first aspect of the present invention.

[0023] In the embodiments of the present invention, the distribution of the grid strips on the rear grid is still the traditional arc-shaped distribution. For ease of description, the grid strips included in the grid strip group are divided into two groups. The midpoint of one group is located directly below the corresponding rear spike roller, and the midpoint of the second group is located behind the rear spike roller. The first group is equivalent to the inherent configuration of the traditional rear grid strip, while the second group is an additional configuration relative to the traditional rear grid strip. Under this condition, a certain number of grid strips are added, so that with a fixed number of grid strip groups on the spike roller, the impurity removal stroke is increased, resulting in a relatively better impurity removal efficiency. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the cooperation structure between the grid strip group and the spike roller group in one embodiment.

[0025] Figure 2 for Figure 1 Enlarged view of part I.

[0026] Figure 3 This is a schematic diagram of the main view structure of the grid strip in one embodiment.

[0027] Figure 4 This is a schematic diagram of the left-side view of the grid structure in one embodiment.

[0028] Figure 5 This is a front view of the structure in which the rear grid and the spike roller work together in one embodiment.

[0029] In the figure: 1. First end plate, 2. Front grid, 3. Middle grid, 4. Spike roller, 5. Rear grid, 6. Second end plate, 7. First bending plate, 8. Extension, 9. Third end plate, 10. First support plate, 11. Second support plate, 12. Second bending section, 13. Gap, 14. Grid strip, 15. Partition. Detailed Implementation

[0030] Given that the embodiments of the present invention focus on improvements to the rear grid 5 and the grid group, and no improvements are proposed for other parts of the seed cotton cleaning machine, the basic components of the seed cotton cleaning machine can be determined by referring to existing seed cotton cleaning machines, and will not be elaborated here.

[0031] It should be noted that in the cotton cleaning machine, the impurity box is located below the grid assembly. The impurity box is generally a bucket-type structure with no other equipment inside. In other words, the part of the grid that is reinforced to solve the second technical problem will not cause new problems such as assembly interference.

[0032] As for the rear grid 5, to solve the first technical problem, its end plate needs to be enlarged, that is... Figure 1 and Figure 5 The second end plate 6 shown is used, but it should be noted that there is often a relatively large space above the grid inside the cleaning box, in other words, there is often no need to make additional adjustments to the cleaning box.

[0033] It should be noted that the above two points are only used to illustrate the impact of the improvements based on the embodiments of the present invention on the cotton cleaning machine itself. However, it should also be understood that, for example, due to the enlargement of the second end plate 6, the second end plate 6 in... Figure 1 The upper right side of the device may have a cotton-filled area, which can be addressed by adapting a baffle plate (usually the rear wall panel). In other words, those skilled in the art can make targeted adjustments without needing to put in any creative effort.

[0034] Furthermore, even when using a traditional rear grid 5, its rear end often has a step. In other words, the enlargement of the rear of the second end plate 6 is simply due to the enlargement of the corresponding step. The adaptive changes required for cleaning the box due to the existence of the step are common knowledge in this field.

[0035] It should be understood that in a cotton seed cleaning machine, with the discharge direction as forward, although the cotton seed enters the cleaning box from above and first falls on top of the spiked roller assembly, at this time... Figure 1 In the illustrated state, the spiked roller rotates clockwise, and the seed cotton first moves to the right; this movement is called the reverse motion. The seed cotton eventually enters the channel between the spiked roller group and the grid group through the rear gap between the last spiked roller 4 and the rear grid 5, and then moves forward under the push of the spiked roller group; this forward movement is the forward motion of the seed cotton flow. Therefore, in the field of seed cotton cleaning machines, the forward and backward motion is defined.

[0036] Furthermore, the longitudinal direction is also called the longitudinal or length direction, while the axial direction of the spike roller 4 is the transverse direction, also called the width direction or left-right direction. The reference plane is determined by the longitudinal and width directions, and the direction perpendicular to the reference plane is the up-down direction.

[0037] Based on the reference frame determined above, Figure 1 In the example of the grid strip assembly and spike roller assembly, the grid strip on the far right is the rear grid strip 5, the grid strip on the far left is the front grid strip 2, and the remaining grid strips are collectively referred to as the middle grid strip 3.

[0038] It should be noted that in the configuration of traditional seed cotton cleaning machines, the number of grid bars 14 equipped with the rear grid bar 5 is the same as or basically the same as that of the middle grid bar 3.

[0039] Let's first look at the solution to the first technical problem, which mainly lies in the rear grid 5. The main reason is that the adjustment space of the middle grid 5 on a seed cotton cleaning machine of the same specifications is very small in response to the first technical problem, while the front grid 2 needs to meet the cotton discharge requirements, and its front side cannot be obstructed. Therefore, in order to solve the first technical problem, the embodiments of the present invention focus on proposing improvements to the rear grid 5.

[0040] Specifically, let's first look at the basic structure of the rear grid 5. Figure 1 and Figure 5 As can be seen, the front side of the rear grid 5 is the second support plate 11, and the rear side is the rear grid support plate of the rear grid 5, which is suitable for cooperating with the rear box plate of the cleaning box, or forming part of the structure of the rear box plate. Relatively speaking, since the number of grid strips 14 on the rear grid 5 changes in the embodiment of the present invention, specifically, it becomes more, and the more part is placed at the rear, making the rear grid support plate larger. Therefore, when it is installed in the cleaning box, a baffle plate needs to be set on the upper left edge of the right side of the rear grid 5. This baffle plate can form the rear wall plate of the cleaning box or the main part of the rear wall plate to facilitate the introduction of seed cotton.

[0041] The baffle plate can be a flat plate set directly above or below, or it can be an involute curved plate or an arc plate that includes a portion of the continuous grid marking arc.

[0042] For ease of description, all the grids arrayed on the predetermined indexing arc of the rear grid 5 are referred to as a grid group. It should be understood that the grids 14 in this array are continuously arrayed. Here, continuous array refers to the continuity of the array, not the continuity between the grids 14, and therefore the whole is called a grid group. In the embodiments of the present invention, a grid group specifically refers to a group composed of individuals on the rear grid 5.

[0043] For ease of description, the grid strips in the grid group provided on the rear grid 5 are divided into two groups. The grouping method has been described above. This grouping is only for ease of description, and the two groups are continuous. The midpoint of the first group is located directly below the rear spike roller, and the front end of the first group is the front end of the grid strip group; the midpoint of the second group is located behind the rear spike roller, and the rear end of the second group is the rear end of the grid strip group.

[0044] contrast Figure 1 The middle grid 3 and the rear grid 5 are referenced. Figure 5 As can be seen from the figure, the first group is roughly consistent with the indexing arc of the upper grid of the middle grid 3, which is also the traditional configuration of the rear grid 5.

[0045] Based on this, a second group was added. The midpoint of the second group is located behind the corresponding rear spike roller. Since a certain number of grid strips 14 were added compared to the traditional rear grid 5, the impurity removal stroke of the rear grid spike roller group was lengthened, thereby improving the impurity removal efficiency.

[0046] Furthermore, as mentioned earlier, since the seed cotton needs to first fall onto the upper side of the spiked roller assembly, then travel in reverse to the rear spiked roller, and then descend through the channel between the rear spiked roller and the rear grid 5, before proceeding forward until it is discharged, the increase in the size of the second end plate 6 is merely equivalent to the baffle plate being offset forward, without any other significant changes.

[0047] According to an embodiment of the present invention, the indexing arcs of the upper grid strips 14 of the rear grid 5 are divided by a first group and a second group. Relatively speaking, the central angle of the arc segment corresponding to the second group is relatively small. In other words, the rear grid 5 according to an embodiment of the present invention cannot be made larger to avoid having too much impact on the downward movement of the seed cotton. In view of this, the second central angle C of the arc segment corresponding to the second group is 60% to 75% of the first central angle B of the arc segment corresponding to the first group. Since the arc segment corresponding to the first group is generally around 100°, the central angle of the indexing arcs of the grid strips 14 of the rear grid 5 is generally less than 180°. If it is too large, it cannot effectively form a wedge-shaped feeding area located between the last spiked roller 4 and, for example, the back wall plate, i.e., the feeding area is too small.

[0048] As a usable design value, when the second central angle C is 60% of the first central angle, the number of grid strips 14 that can be added to the rear grid 5 is 60% more than that of the traditional rear grid 5. If applied to a six-roller seed cotton cleaner, the number of grid strips 14 can be increased by 10% overall.

[0049] Regarding the available design values, the number of grid bars 14 added to the rear grid 5 based on the embodiments of the present invention should not be excessive. Figure 5 As can be seen, as the second central angle C of the second group increases, the rear grid 5 tends to wrap around the rear spike roller. As mentioned earlier, when the seed cotton cleaner is cleaning, impurities must pass through the gaps between the grid bars and then enter the impurity box. During this process, there are the effects of friction, collision, and gravity. Therefore, the second central angle C should not be too large, otherwise the increase in impurity removal efficiency will be very limited or not increase at all. Thus, the second central angle C should be controlled within 70°, with 68° being the preferred value.

[0050] With the second central angle C being 68°, the corresponding first central angle B is between 100° and 102°, and the sum of the two is at most 170°.

[0051] As a further option, the second central angle C is 67% to 71% of the first central angle B.

[0052] from Figure 5 As can be seen, the increased distribution range of the grid strips 14 also increases the size of the second end plate 6, essentially improving the overall stiffness of the rear grid 5. This relates to the second technical issue. Furthermore, to further improve the overall stiffness, the front support plate of the rear grid 5, namely… Figure 5 The lower end of the second support plate 11 shown extends downward relative to the second end plate 6 and is bent to form a reinforcing plate.

[0053] Lowering the bar can increase stiffness, but bending can increase the shear section modulus, thus increasing the shear capacity more under the condition of using the same amount of material, thereby enabling the rear grid 5 to have greater stiffness.

[0054] Regarding the second technical problem, the need for reinforcement of other grid strips is relatively stronger. For ease of description, regardless of the type of grid strip, the front support plate of the grid strip is referred to as the second support plate 11, and the rear support plate of the grid strip is referred to as the first support plate 10. See [reference needed]. Figure 1 and Figure 2As shown in the diagram, the lower ends of the support plates of at least the adjacent grid bars in the grid group extend downwards and bend relative to the end plates of the grid bars to form a base reinforcement plate. In other words, except for the rear grid bar 5 and the front grid bar 2, the front and rear support plates of the remaining grid bars, namely the middle grid bar 3, are all extended downwards and bent to increase the stiffness of the corresponding support plates, thereby increasing the overall stiffness of the grid.

[0055] Although there is no other equipment in the impurity bin located below the cleaning box in the cotton seed cleaning machine, its basic structure is a bucket-shaped structure that facilitates material collection, specifically an oblique quadrangular pyramid structure. If the grid, for example, the first support plate 10 extends too far downwards, it may interfere with the wall of the impurity bin. Therefore, for example, the downward extension of the first support plate 10 should not be too large. If the upper space of some impurity bins allows, for example, Figure 2 The first bend 7 and the second bend 12 shown are relatively long; otherwise, they could be shortened. For ease of description, the first bend 7 and the second bend 12 are collectively referred to as the base reinforcement, the length of which is 0.25 to 0.35 times the length of the main support plate.

[0056] from Figure 3 As can be seen, for example, the main body of the second support plate 11 is the part located on the left side of the figure, while the second bent part 12 and the inwardly bent part located at the top of the second support plate 11 are auxiliary parts.

[0057] Regarding the bending amount of the base reinforcement relative to the main body of the support plate, the included angle A between the two is used as a parameter, which is 140°~150°.

[0058] Regarding the bending direction between adjacent base reinforcing plates of adjacent grids, they can be the same or opposite. If they are the same, interference needs to be considered. In this case, when bending, the base reinforcing plate on the outer side is provided with an extension 8 of the main plane of the continuing support plate, which is used to avoid the corresponding base reinforcing plate on the inner side. Under this condition, the first bending part 7 and the second bending part 12 are in a parallel state, thus forming a gap 13. This gap 13 can effectively avoid the grid from being affected on the cotton cleaning machine when the included angle A of the two base bending parts is not accurate.

Claims

1. A rear grid for use in a cotton seed cleaning machine, characterized in that, The rear grid is continuously arrayed with grid strips on a predetermined indexing arc to form a grid strip group; The grid strip group includes two sets of grid strips. The midpoint of the first set is located directly below the rear spike roller, and the front end of the first set is the front end of the grid strip group. The midpoint of the second set is located behind the rear spike roller, and the rear end of the second set is the rear end of the grid strip group. In a vertical plane with the axis of the spiked roller as the normal, the direction perpendicular to the arrangement of the spiked roller group is the up and down direction.

2. The rear grid strip according to claim 1, characterized in that, The second central angle of the arc segment corresponding to the second group is 60% to 75% of the first central angle of the arc segment corresponding to the first group.

3. The rear grid according to claim 2, characterized in that, The second central angle is 67% to 71% of the first central angle.

4. The rear grid according to claim 1, characterized in that, The lower end of the front support plate of the rear grid extends downward relative to the end plate and bends to form a reinforcing plate.

5. A grid assembly, characterized in that, Includes the rear grid as described in any one of claims 1 to 4.

6. The grid assembly according to claim 5, characterized in that, The lower ends of at least the support plates adjacent to other grids of the included grid extend downward and bend relative to the end plates of the grid to form a base reinforcement plate.

7. The grid assembly according to claim 6, characterized in that, The length of the base reinforcement plate is 0.25 to 0.35 times the length of the main support plate.

8. The grid assembly according to claim 6 or 7, characterized in that, The angle between the base reinforcement plate and the main support plate is 140°~150°.

9. The grid assembly according to claim 6, characterized in that, The bending directions of adjacent foundation reinforcement plates between adjacent grid strips are the same or opposite; If they are the same, when bending, the outer base reinforcement plate and the corresponding support plate are provided with an extension of the main plane of the continuing support plate, which is used to avoid the corresponding inner base reinforcement plate.

10. A seed cotton cleaning machine, characterized in that, Includes the grid array as described in any one of claims 5 to 9.

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