Inclined seed cotton cleaner

Abstract

The present invention discloses an inclined seed cotton cleaning machine, the basic structure of which includes: a cleaning box, which is an inclined rectangular box body; a feed inlet is opened in the middle or middle front portion of the upper panel of the cleaning box in the inclined direction; a discharge outlet is provided at the front end of the cleaning box; and a debris discharge outlet is provided at the lower side of the cleaning box; an inlet portion is mounted on the feed inlet, the inlet portion is a trapezoidal box with a smaller upper portion and a larger lower portion, wherein the first angle between the rear box panel of the trapezoidal box and the upper panel is 127° to 140°; and an impurity box, which is connected to the debris discharge outlet and is located at the lower side of the cleaning box. The inclined seed cotton cleaning machine according to the present invention has a relatively good cleaning effect.

Description

TECHNICAL FIELD

[0001] The present application relates to an inclined seed cotton cleaner. BACKGROUND

[0002] The technical problems of the known inclined seed cotton cleaner are listed in the background section below, which will be solved in the embodiments of the present application, and the main technical solutions for solving the main technical problems are given in the summary section.

[0003] At present, one of the process equipment for seed cotton cleaning in the cotton processing production line is the inclined seed cotton cleaner with down draft. The inclined seed cotton cleaner with down draft has an inclined cleaning box, generally with the high end side as the front side and the low end side as the rear side. The front end of the cleaning box is an open end, and the rear end is a sealed end. The lower side of the cleaning box is also usually open to connect the hopper type impurity box. The upper panel of the cleaning box has a feeding port in the middle, and a cotton conveying pipeline is matched with the feeding port. The lower end of the impurity box is provided with an impurity outlet. A plurality of spike rollers are arranged in the cleaning box along the direction of the inclined cleaning box. The number of spike rollers is generally six, and in some implementations, there can be more, such as seven or eight, and at most sixteen. However, for the inclined cleaner with down draft, the number of spike rollers is usually not more than eight, and the up draft mode is equipped with more small rollers.

[0004] The above is the general structure of the inclined seed cotton cleaner with down draft. According to the general structure, the basic process of the inclined seed cotton cleaner with down draft is as follows: the seed cotton is sucked into the cleaning box through the inlet, most of it falls onto the third or fourth spike roller counted from the rear to the front, and after being hit and loosened by the spike roller, it moves to the lowermost spike roller. The seed cotton impacted by the spike roller hits the rear cover plate of the cleaning box and enters the passage between the spike roller and the grid grate under the winding of the lowermost spike roller. The passage is the upward passage, and the upward force comes from the relay driving of the spike roller. In the process of driving, the seed cotton is also blocked by the fixed grid grate and undergoes friction and other processes. The impurities in the seed cotton are discharged from the gap of the grid grate into the impurity box below the cleaning box, and then the impurities are discharged from the body through the impurity outlet by the wind power of the fan and their own gravity. The cleaned seed cotton is moved by the spike roller along the upward passage to the front end of the cleaning box, and then enters the next process through the outlet.

[0005] After long-term research, it is found that the existing down-draft inclined seed cotton cleaning machine has the following technical problems:

[0006] The first technical problem is the main technical problem, which is caused by the fact that the inlet part is a rectangular box as a whole, the surrounding plate of the box is substantially perpendicular to the ground, under the action of conveying wind, the cotton is sucked into the cleaning part through the inlet part and falls on the spike roller, due to the limitation of the rectangular box of the inlet part and the influence of the outlet of the impurity box located at the lower rear of the inlet part, the seed cotton will first stick to the rear wall of the inlet part when falling from the inlet part, and then fall along the rear wall, which causes the cotton to be too concentrated and cannot be evenly scattered on the spike roller group, affecting the cleaning effect.

[0007] The second technical problem is that the inlet part and the cleaning part have an included angle, and the outlet of the impurity box is misaligned, so that the center of the inlet part and the center of the outlet of the impurity box are not on the same vertical line, which causes the conveying wind to enter from the inlet part, then pass through the cleaning part, and finally be discharged at the outlet of the impurity box, which cannot smoothly pass through due to the large resistance of the rear wall of the impurity box, reducing the utilization rate of the conveying wind.

[0008] The third technical problem is that when the seed cotton is thrown out of the outlet part by the spike roller, due to the fact that the overall outlet part is lower than the cleaning part, a part of the seed cotton is thrown onto the upper cover plate and the front cover plate of the outlet part due to the influence of centrifugal force, and then falls onto the next process of the outlet part, and some seed cotton is bounced back and is hooked by the spike roller again to enter the cleaning part, forming back-sucked cotton, which greatly increases the formation of lint due to excessive cleaning.

[0009] The fourth technical problem is that the outlet of the impurity box is substantially parallel to the horizontal plane, and when the outlet pipe is connected to the outlet, a large-radius elbow pipe needs to be adapted, which greatly increases the wind resistance and the cost of pipe connection, and reduces the efficiency of the fan. SUMMARY

[0010] In order to solve the first technical problem, the purpose of the present application is to provide an inclined seed cotton cleaning machine with relatively good cleaning effect.

[0011] In the embodiments of the present application, an inclined seed cotton cleaning machine is provided, which has the following basic structure:

[0012] The cleaning box is an inclined rectangular box, the upper panel of the cleaning box is provided with a feeding port at the middle or middle front part in the inclined direction, the front end of the cleaning box is provided with a throwing port, and the lower side of the cleaning box is provided with an impurity discharge port;

[0013] The inlet part is arranged at the feeding port, the inlet part is a trapezoidal box with small upper part and large lower part, and the first included angle between the rear box plate of the trapezoidal box and the upper panel is 127°-140°; and

[0014] Impurity tank, which is connected to the impurity outlet and located at the lower side of the cleaning tank.

[0015] Optionally, the first included angle is 131°-137°.

[0016] Optionally, the second included angle between the front tank plate of the trapezoidal tank and the upper panel is 90°-135°.

[0017] Optionally, the second included angle is 129°-135°.

[0018] Optionally, the center of the impurity outlet of the impurity tank and the center of the inlet end are located on the same vertical line.

[0019] Optionally, the third included angle between the connecting plane determined by the impurity outlet flange corresponding to the impurity outlet and the horizontal plane is 7°-35°.

[0020] Optionally, the third included angle is 10°-20°.

[0021] Optionally, it further comprises a lint box which is fitted to the throwing outlet and located at the front side of the cleaning tank.

[0022] The front cover plate of the lint box is a vertical plate, and the distance L is positively correlated with the elevation angle D.

[0023] The distance L is the distance between the front cover plate and the center of the throwing outlet.

[0024] The elevation angle D is the included angle between the direction of the oblique placement of the cleaning tank and the horizontal plane.

[0025] Optionally, the distance L is 0.68-0.80 times the height H of the cleaning tank.

[0026] The height H of the cleaning tank is the internal cavity dimension in the direction of the cleaning tank perpendicular to the upper panel.

[0027] Optionally, when the elevation angle D is 26°-29°, the distance L is 0.75-0.78 times the height of the cleaning tank.

[0028] Optionally, the upper cover plate of the lint box is an arc-shaped plate or the upper cover plate is connected to the upper edge of the front end of the cleaning tank below 0-0.2H.

[0029] H is the internal cavity dimension in the direction of the cleaning tank perpendicular to the upper panel.

[0030] According to the first technical problem, it is found that the current generally adopted inlet part which is approximately perpendicular to the ground causes the problem. The four box plates of the inlet part box, at least the front and rear box plates, are perpendicular to the ground, which restricts the scattering range of the seed cotton introduced through the inlet part, especially the rear box plate, which has a great influence on the scattering range of the seed cotton, resulting in most of the seed cotton falling on one of the tine rollers. In the embodiment of the present application, an inlet part box with a trapezoidal box structure is adopted, and the first included angle between the rear box plate of the inlet part box and the upper panel of the cleaning box is 127°-140°, and the included angle between the rear box plate and the horizontal plane is generally about 27°, which is equivalent to the outward drift of the rear box plate being more than 8° than the original rear box plate; and the second included angle between the front box plate of the inlet part box and the upper panel is 90°-135°, which is equivalent to the outward drift of the rear box plate being more than 25° than the original rear box plate. It is found through observation that under this condition, the seed cotton introduced through the inlet part into the cleaning box can be relatively uniformly dispersed on 2-3 tine rollers, so as to avoid the accumulation of the seed cotton on the upper layer due to too much concentration, resulting in insufficient cleaning of the seed cotton on the upper layer. In other words, the inclined seed cotton cleaner based on the embodiment of the present application can make the seed cotton relatively uniformly dispersed, so that the seed cotton can be relatively fully cleaned, thereby having a better cleaning effect. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is an embodiment of the inclined seed cotton cleaner structure schematic and conveying air flow trend diagram.

[0032] Figure 2 It is an embodiment of the inlet part conveying air flow diagram.

[0033] Figure 3 It is an embodiment of the inclined seed cotton cleaner structure schematic and seed cotton trend diagram.

[0034] Figure 4 It is an embodiment of the cotton outlet box seed cotton trend diagram.

[0035] In the figure: 1. horizontal plane, 2. impurity box, 3. stand, 4. outlet flange, 5. cotton outlet box, 6. front cover plate, 7. upper cover plate, 8. discharge port, 9. tine roller, 10. lattice grid, 11. cleaning box, 12. front box plate, 13. inlet part, 14. inlet flange, 15. rear box plate, 16. upper panel, 17. centering line, 18. impurity outlet, 19. flange, 20. interface.

[0036] A. first included angle, B. second included angle, C. third included angle. DETAILED DESCRIPTION

[0037] In order to clearly show, as Figure 1 and 3The power part of the inclined seed cotton cleaner exemplified in the drawings, such as the power part of the tine roller 9 arranged in the cleaning box, is omitted, and it should be understood that the embodiments of the present application do not involve the improvement of the power part, and the improvement does not affect the position and driving form of the power part, so the omission does not affect the correct identification and understanding of the related configuration by those skilled in the art.

[0038] For the convenience of description, the cleaning box 11, the tine roller 9 accommodated in the cleaning box 11, the lattice grid 10, and the power part driving the tine roller group are collectively referred to as the cleaning part; the part containing the impurity box 2 is collectively referred to as the impurity discharge part; and the part containing the cotton discharge box 5 is collectively referred to as the cotton discharge part. Figure 1 The part of the inclined seed cotton cleaner exemplified in the drawings, such as the inlet part 13 for guiding the seed cotton into the inclined seed cotton cleaner, is collectively referred to as the inlet part 13; the part containing the impurity box 2 is collectively referred to as the impurity discharge part; and the part containing the cotton discharge box 5 is collectively referred to as the cotton discharge part.

[0039] The inclined seed cotton cleaner is basically a downward air suction inclined seed cotton cleaner, Figure 1 The impurity outlet 18 shown in the drawings is generally connected to an air duct, and the seed cotton enters the cleaning box 11 by air suction. Due to the limitation of the position, the lower end of the impurity box 2 is already very close to the ground, and the impurity outlet 18 needs to be connected to the air duct through a bend.

[0040] The main part of the inclined seed cotton cleaner is Figure 1 The cleaning box 11 exemplified in the drawings is usually a rectangular box, and the cleaning box 11 is inclined, which is the technical basis for the naming of the inclined seed cotton cleaner.

[0041] It should be understood that in the art, the direction in which the inclined seed cotton cleaner is inclined is the basic direction, and the discharge direction is the forward direction, so as to correspond to the front end, which is located at the upper end in the inclined direction. The opposite direction is the rear direction, so as to correspond to the rear end. Thus, the front-rear direction is determined, which is also called the longitudinal direction or the length direction.

[0042] Further, the axial direction of the tine roller 9 is the width direction, which is the left-right direction, also called the transverse direction, which is used to determine the radial length of the machine, i.e. the transverse length of the functional part of the tine roller 9.

[0043] The left-right structure of the cleaning box 11 is usually called a wall plate, which is usually a steel plate, and is the mounting base of the tine roller 9 and the lattice grid 10, and the remaining part of the cleaning box 11 is mainly sheet metal, which can also be understood as a relatively thin sheet, such as a sheet of steel. For example, the upper plate 16 is usually a sheet metal part, but it can also be made of a metal plate with a slightly larger thickness, which can be called a plate.

[0044] Figure 1As shown in the middle, the front plate 12 and the back plate 15 of the inlet part 13 of the known inclined seed cotton cleaner are often parallel to the center line 17 as the reference line, in other words, substantially perpendicular to the horizontal plane 1 shown in the figure, the seed cotton is confined in a relatively small range. And as shown in the middle, the impurity outlet 18 of the impurity box 2 is often biased to the rear side, which leads to the air flow power coming from the rear of the inclined seed cotton cleaner, the seed cotton flow is more likely to deviate to the side of the back plate 15, thus easily piling up on one of the spike rollers 9, in other words, under the same cotton feeding rate, the seed cotton cannot be evenly distributed, resulting in a local cotton layer being too thick and thus not being able to be cleaned relatively better. Figure 1

[0045] Figure 1 The small arrows are used to represent the flow mode of the conveying air, in fact, most of the conveying air enters the impurity box 2 from the middle and rear of the cleaning box 11. Next, the characteristics of the cleaning box 11 will be described, in addition to the basic characteristics of the cleaning box 11 having a “rectangular box body” as described above, a set of spike rollers 9 will be arranged in the cleaning box along the longitudinal direction (substantially parallel to the upper plate 16), which as a whole becomes a spike roller set. For the down-walking cotton mode, the number of spike rollers 9 is generally six, a few use seven or eight, and there are also cases of using four or five. For the up-walking cotton, more can be used, for example, sixteen.

[0046] The inlet part 13 is generally arranged in the middle of the cleaning box 11, for the down-walking cotton mode, the inlet part 13 is often arranged in the middle of the cleaning box 11, for the up-walking cotton mode, the inlet part 13 is often arranged in the front of the cleaning box 11. Figure 1 As shown in the middle, the inclined seed cotton cleaner with six spike rollers 9, as a comparison, the inlet part with a traditional structure often makes the seed cotton fall on the fourth spike roller 9 from the top, then moves to the rear of the spike roller set along the upper side of the spike roller set by the beating of the spike rollers 9, a small amount is carried to the lower side of the spike roller set, most of them enter the lower side of the spike roller set from the rear side of the spike roller 9 located at the rear, and then move upward from the gap between the spike roller 9 and the lattice grid 10 by the beating of the spike roller set, which is the principle of the down-walking cotton.

[0047] The upper plate 16 of the cleaning box 11 for matching the inlet part often has a rectangular opening (hereinafter referred to as the feeding opening), which is substantially the same in shape and size as the lower opening of the inlet part 13, and then the inlet part 13 is fixed on the upper plate 16 by rivets or screws, etc. Relatively speaking, in the embodiment of the present application, a new type of inlet part 13 is adopted, and the corresponding feeding opening of the upper plate 16 is larger than the feeding opening of the upper plate 16 of the traditional inclined seed cotton cleaner of the same type, mainly the longitudinal dimension is larger.

[0048] ​Correspondingly, in the embodiments of the present application, the inlet portion 13 adopts a trapezoidal box with a small upper opening and a large lower opening, and it is known that the conventional inlet portion 13 is basically a rectangular box structure, and relatively speaking, the flow cross-sectional areas of the upper opening and the lower opening of the conventional inlet portion 13 are basically the same, and even in some implementations, the inlet portion 13 with a certain taper is adopted, but the main consideration is also the convenience of fixing and conveying wind due to the pressure drop caused by the change of the flow cross-sectional area.

[0049] In the embodiments of the present application, the consideration of strengthening the trapezoidal box itself to the conveying wind is focused on, and the improper flow guiding of the box plate of the inlet portion 13, especially the rear box plate 15 to the seed cotton flow is avoided or reduced as much as possible.

[0050] In order to clearly distinguish from the current possible inlet portion 13 with a certain small taper, in the embodiments of the present application, the inlet portion 13 is defined as a trapezoidal box with a small upper opening and a large lower opening. Figure 1 and Figure 3 In the exemplary structure, the first included angle A and the second included angle B are used to define the inlet portion 13.

[0051] It is known that, for the determination of the included angle between the box plate and the upper plate 16, the part having a continuous relationship between the outer surface of the box plate and the upper plate 16 is generally used. For example, Figure 1 In the exemplary structure, the first included angle A and the second included angle B are used to define the inlet portion 13. Figure 1 It is known that, for the determination of the included angle between the box plate and the upper plate 16, the part having a continuous relationship between the outer surface of the box plate and the upper plate 16 is generally used. For example,

[0052] In the embodiments of the present application, the first included angle A between the rear box plate 15 of the inlet portion 13 and the upper plate 16 is 127°-140°, and the second included angle B between the front box plate 12 of the inlet portion 13 and the upper plate 16 is 90°-135°. Figure 1 In the exemplary structure, the first included angle A is 134°, and the second included angle B is 132°, and under this condition, Figure 1 It can be seen from the exemplary structure that the airflow in the space above the needle roller group in the cleaning box 11 mainly blows off from the third to the fifth needle roller 9 from the top, and in the factory experiment, most of the seed cotton falls on the third and fourth needle rollers 9 from the front, and a small amount falls on the fifth needle roller 9 from the front, and the seed cotton flow has a good dispersion effect.

[0053] As to the minimum value of the second included angle B, the processability of assembly is mainly considered, but it should also be known that, based on the concept of the present application, the amount of seed cotton descending along the lower side of the rear box plate 15 is relatively small due to the influence of the main flow direction of the conveying air flow, and therefore, even if the second included angle B is an acute angle, its influence is far less than that of the rear box plate 15, and therefore, the first included angle A is the first factor to be ensured, and the second included angle B is considered in the preferred embodiment.

[0054] Further, the above concept also determines that the second included angle B has more selection leeway, so that the available range is larger.

[0055] Considering that the discharge port should not be too large, otherwise it will affect the carding of the conveying air flow on the seed cotton, therefore, the first included angle A should not be greater than 140°, and the second included angle B should not be greater than 135°.

[0056] As to the first included angle A, its minimum value should not be too small, in Figure 1 In the exemplified structure, the inclination of the inclined seed cotton cleaner, i.e. the included angle (hereinafter referred to as the elevation angle D, not shown in the figure) between the upper panel 16 of the cleaning box 11 and the horizontal plane is 27°. If the rear box plate 15 is perpendicular to the horizontal plane 1, at this time the first included angle A is 117°. As a comparison, when the first included angle A is increased by 5° on this basis, there is still a large amount of seed cotton descending along the rear box plate 15, and when it is further increased by 5°, the amount of seed cotton descending along the rear box plate 15 has a relatively large decrease. Under the condition that the elevation angle D is 27°, when the first included angle A is 134°, there is still a certain amount of seed cotton descending along the rear box plate 15, but at this time the rear box plate 15 is mainly used for carding the seed cotton flow, and no longer constitutes a large restriction, and the carding of the seed cotton flow is to avoid a small amount of scattered zero flowers flying directly to the last part of the cleaning box 11. It can also be known that the first included angle A should not be too large, otherwise the function of carding the seed cotton flow will be lost.

[0057] The relationship between the impurity box 2 and the cleaning box 11 will be described below, in order to clarify the specific means for solving the second technical problem.

[0058] The lower panel of the cleaning box 11 is usually default, and usually only a little is left at the frontmost part and / or the last part, and in some implementations, the lower panel is completely default, and even if a little edge is left, it is often for the convenience of assembly between the impurity box 2 and the cleaning box 11, and it cannot constitute a lower panel, in other words, the impurity discharge port located on the lower side of the cleaning box 11 is relatively large.

[0059] The impurity box 2 is a whole upper hopper structure, which can be regarded as an upper large and lower small inclined quadrangular pyramid for collecting materials. This results in that the impurity outlet 18 at the lower end of the impurity box 2 cannot be located directly below the cleaning box 11, but is offset backward based on the inclined manner of the inclined quadrangular pyramid, and is generally located directly below or slightly forward of the second spike roller 9 from the bottom, but the forward distance is generally not greater than the diameter of the spike roller 9.

[0060] For the known inclined seed cotton cleaner, the positions of the inlet portion 13 and the impurity outlet 18 in the front-rear direction are often quite different. It is found through research that this configuration can cause a large flow resistance and reduce the utilization rate of the conveying air, i.e., the second technical problem. Therefore, in the embodiments of the present application, the center of the impurity outlet 18 of the impurity box 2 and the center of the inlet end of the inlet portion 13 are arranged on the same vertical line, and the impurity outlet 18 is arranged to be inclined downward from the center of the inlet end of the inlet portion 13. Figure 1 and Figure 3 In the example structure, it can be more obviously seen that the center line 17 is used to represent the position relationship between the impurity outlet 18 and the inlet flange 14 of the inlet portion 13.

[0061] Arranging the center of the impurity outlet 18 of the impurity box 2 and the center of the inlet end of the inlet portion 13 on the same vertical line has a relatively better effect, which is embodied in that most of the conveying air directly flows downward, so that the conveying air flows more smoothly when passing through the inlet portion 13, the cleaning portion and the impurity box 2, thereby reducing the air resistance and improving the utilization rate of the conveying air.

[0062] Next, the fourth technical problem, i.e., the arrangement of the impurity outlet 18 of the impurity box 2, will be described. The impurity outlet 18 of the conventional impurity box 2 is generally horizontal, and then a bend pipe (generally a 90-degree bend pipe) is used to connect the generally horizontal impurity outlet pipe. The bend pipe cannot be too large (here, the diameter of the center line of the bend pipe is referred to), because the space below the impurity box 2 is close to the ground and is relatively narrow. If the bend pipe is relatively small, the flow resistance will be obviously increased.

[0063] In order to solve the fourth technical problem, the fourth technical problem is improved by changing the impurity outlet 18. Due to the feature of the inclined quadrangular pyramid of the impurity box 2, the fourth technical problem is mainly improved rather than completely eliminated. That is, no matter how the impurity outlet pipe is arranged, a bend pipe is needed to adapt, and the bend pipe effect exists. However, two levels of technical effects can be solved based on this. The first level is the technical effect based on the fourth technical problem, i.e., when the included angle (hereinafter referred to as the third included angle C) between the connecting plane determined by the corresponding impurity outlet flange and the horizontal plane 1 is 0, i.e., the connecting plane is parallel to the horizontal plane 1, a 90-degree bend pipe is needed to adapt. When the third included angle C is, for example, 10°, the bend pipe only needs to be 80 degrees, and if the third included angle C is, for example, 20°, the bend pipe only needs to be 70 degrees. In this way, the flow resistance of the conveying air is reduced, and the utilization rate of the conveying air is improved. Figure 3As shown, the oblique placement of the four-prism-shaped impurity tank 2 determines that the impurity outlet 18 formed by the oblique cutting method can also shorten the flow distance of the conveying airflow (the flow distance is related to the lift), at this time, the elbow effect is weakened, thereby reducing the air resistance.

[0064] The second level of technical effects, because the central angle of the elbow decreases, under the same diameter conditions, the space occupied by the elbow itself becomes smaller, thereby facilitating installation and pipe running in the space below the impurity tank 2.

[0065] The impurity outlet 18 formed by the oblique cutting method also brings a negative problem, that is, the inlet of the elbow necessarily becomes large, the installation becomes relatively difficult, and the manufacturing difficulty of the elbow also becomes large, therefore, the third included angle C should not be more than 35°, and in the preferred embodiment, it should not be more than 20°.

[0066] If the aforementioned negative problem can be overcome, a relatively smaller third included angle C can be selected as much as possible. In consideration of the negative problem, when the third included angle C is 12°, the negative problem and the fourth technical problem can be relatively well balanced.

[0067] As the minimum value of the available third included angle C, it should not be less than 7°, and a too small third included angle C has no value, and preferably should not be less than 10°.

[0068] The third technical problem will be considered below, which has a relatively small impact on the first three technical problems.

[0069] From Figure 3 and Figure 4 As can be seen from the example structure, the seed cotton is pushed by the frontmost spike roller 9 and flies forward, and may hit the front cover plate 6 shown in, for example Figure 3 and Figure 4 Some seed cotton may be bounced back, and the bounced back seed cotton may fall onto the upper side of the spike roller set 9 and be further cleaned, thereby possibly causing an over-cleaning problem, which increases the amount of broken cotton fibers and the amount of locked fibers.

[0070] In the embodiment of the present application, the distance L between the front cover plate 6 and the cleaning tank 11 is expanded, and the front cover plate of the lint outlet tank 5 is configured as a vertical plate, and the distance L is positively related to the elevation angle D, that is, the larger the elevation angle D, the larger the distance L, thereby reasonably extending the distance L and reducing the amount of seed cotton bounced onto the upper side of the spike roller set.

[0071] For accurate definition, the distance L is represented as the distance between the front cover plate 6 and the center of the discharge port 8 of the cleaning tank 11.

[0072] As a specific enlarged scale, the distance L is 0.68-0.80 times the height H of the cleaning box 11 (not shown in the figure), and the distance L is generally less than 0.5H in the conventional inclined seed cotton cleaner.

[0073] wherein the height H of the cleaning box is the inner cavity dimension of the cleaning box 11 in the direction perpendicular to the upper panel 16.

[0074] Further, under the condition that the elevation angle D is 26°-29°, the distance L is 0.75-0.78 times the height of the cleaning box.

[0075] It should be noted that the distance L should not be too large, otherwise the cotton outlet box 5 will be too large, and the lower opening of the cotton outlet box 5 needs to be connected with the air closing valve, at this time the too large cotton outlet box 5 will also increase the difficulty of the design of the air closing valve connection structure.

[0076] In addition, in addition to making the distance L slightly larger, it is also necessary to consider Figure 1 The upper cover plate 7 shown in FIG. 7 can be an arc-shaped plate, so that the flow of the seed cotton can be more smoothly guided downward in response to the thrown seed cotton. However, in actual use, the upper cover plate 7 of the cotton outlet box is generally a horizontal plate, and therefore the installation position of the upper cover plate 7 is offset upward relative to the conventional upper cover plate 7, specifically, the upper cover plate 7 is connected to the upper edge of the cleaning box 11 below 0-0.2H.

Claims

1. An inclined seed cotton cleaning machine, characterized in that: include: The cleaning box is an oblique rectangular box body, the upper panel of the cleaning box is provided with a feed port in the middle or middle front part in the oblique direction, the front end of the cleaning box is provided with a throwing port, and the lower side of the cleaning box is a debris discharge port; An inlet portion is mounted on the feed port, the inlet portion being a trapezoidal box having a smaller top and a larger bottom, wherein a first angle between a rear box panel of the trapezoidal box and the upper panel is 127° to 140°; and An impurity box is connected to the impurity discharge port and is located at the lower side of the cleaning box; The second included angle between the front box panel of the trapezoidal box and the upper panel is 129° to 135°; The center of the impurity outlet of the impurity box and the center of the inlet end of the inlet portion are located on the same vertical line; A third angle is formed between a connection plane determined by the impurity outlet flange corresponding to the impurity outlet and the horizontal plane, and the third angle is 7° to 35°.

2. The inclined seed cotton cleaning machine according to claim 1, characterized in that: The first angle is 131°~137°.

3. The inclined seed cotton cleaning machine according to claim 1, characterized in that: The third angle is 10°~20°.

4. The inclined seed cotton cleaning machine according to claim 1, characterized in that: It also includes a cotton discharge box mounted on the discharge port and located in front of the cleaning box; The front cover of the cotton outlet box is a vertical plate, and the distance L is positively correlated with the elevation angle D; The distance L is the distance between the front cover and the center of the ejection port; The elevation angle D is the angle between the tilted direction of the cleaning box and the horizontal plane.

5. The inclined seed cotton cleaning machine according to claim 4, characterized in that: The distance L is 0.68 to 0.80 times the height H of the cleaning box; The height H of the cleaning box is the inner cavity dimension of the cleaning box in the direction perpendicular to the upper panel.

6. The inclined seed cotton cleaning machine according to claim 5, characterized in that: When the elevation angle D is 26° to 29°, the distance L is 0.75 to 0.78 times the height of the cleaning box.

7. The inclined seed cotton cleaning machine according to claim 4, characterized in that: The upper cover of the cotton outlet box is an arc-shaped plate or the upper cover is connected to the position 0 to 0.2H below the upper edge of the front end of the cleaning box; H is the inner cavity dimension perpendicular to the cleaning box direction of the upper panel.

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