Ginned cotton cleaning device and cotton processing production line

Abstract

The invention discloses a ginned cotton cleaning device and a cotton processing production line, and the ginned cotton cleaning device comprises a first cotton evening device which is provided with a first header pipe for receiving incoming cotton, and a first branch pipe and a second branch pipe which are connected to the outlet end of the first header pipe in parallel, and the second branch pipe is connected with a first bypass; the first cotton evening device further comprises a first valve element set, and under the condition that the first header pipe and the first branch pipe are communicated all the time, the opening and closing state between the second branch pipe and the first header pipe and the opening and closing state of the first bypass are mutually exclusive. A first cotton feeding pipe of the first skin cleaning machine is connected with the first branch pipe; a second cotton feeding pipe of the second leather cleaning machine is connected with the second branch pipe; and a third valve. The lint cotton cleaning device is relatively wide in application range.

Description

Technical Field

[0001] The invention relates to a lint cleaning device and also relates to a cotton processing production line equipped with the lint cleaning device. Background Art

[0002] In the cotton processing process, the seed cotton is ginned by the cotton gin to separate the cotton fiber from the cotton seeds, and obtain lint cotton, which is generally transferred to the next process equipment through the cotton conveying pipeline. Due to the fact that most cotton is harvested by machine, the seed cotton contains a high amount of impurities. Even if the previous stage is cleaned multiple times, the final lint cotton still has a high impurity rate. Therefore, the next process equipment is usually not a baler, but a lint cleaning machine (usually referred to as a lint cleaning machine, hereinafter referred to as a lint cleaning machine).

[0003] Correspondingly, due to the characteristics of machine-picked cotton, the lint obtained after ginning often contains impurities such as cotton leaves, broken cotton stalks, and dead ropes. In order to ensure the quality of lint, a lint cleaner is needed to remove these impurities. In the current cotton processing technology, after the lint is output from the cotton gin, it is generally first cleaned by an airflow lint cleaner, and then cleaned by a sawtooth lint cleaner for a second time before being packaged.

[0004] At present, some of the cotton processing production lines on the market are equipped with a single-pass sawtooth lint cleaning machine, and some are equipped with a two-pass sawtooth lint cleaning machine, of which the latter is often referred to as double-pass lint cleaning. The so-called double-pass lint cleaning means that the lint first passes through a single pass of lint cleaning before entering a second pass of lint cleaning, which is equivalent to the two passes of lint cleaning being arranged in series on the cotton processing production line, that is, the two passes of lint cleaning will not double the lint cleaning rate, but will be the same as the single pass of lint cleaning. The difference is that the second pass of lint cleaning has a relatively high rate of impurities. However, it should also be known that different batches of seed cotton may have quite different impurity rates, which is why some batches of seed cotton require a single pass of lint cleaning, while others require two passes of lint cleaning. The scope of application of a lint cleaning machine that is simply arranged in series is relatively narrow. At the same time, since some batches of lint cotton do not need to undergo a second pass of lint cleaning, and it should be known that the more cleaning times, the lower the impurity rate will also lead to increased damage to the cotton fibers and the production of cords.

[0005] In addition, with the improvement of cotton processing equipment, the single-line cotton processing efficiency has increased, and the serially set lint cleaning machine either fails to meet the cleaning efficiency standards or cannot keep up with the production efficiency of the cotton gin. The overall efficiency and lint quality cannot be guaranteed at the same time.

[0006] Figure 1 and Figure 2A schematic diagram of the layout structure of a known cotton processing production line ginning-cleaning process equipment is shown. In the figure, seed cotton is sent to a cotton gin 1 after being cleaned (cleaned by a seed cotton cleaner). The cotton gin 1 is used to separate cotton fibers from cotton seeds. The collection of separated cotton fibers is lint. The lint is sent to an airflow lint cleaner 3 through a first cotton conveying pipe 2 for preliminary cleaning, and then sent to a sawtooth lint cleaner, for example, through a second cotton conveying pipe 4. Figure 1 and Figure 2 In the figure, it is represented as a first skin cleaning machine 5 and a second skin cleaning machine 9. Figure 1 and Figure 2 In the figure, arrows are used to indicate the direction of lint cotton. It can be seen from the figure that currently only the first lint cleaning machine 5 is connected to the cotton processing production line, and the second lint cleaning machine 9 is in a standby state. Figure 1 and Figure 2 The first valve 8 and the second valve 7 shown in the figure are equivalent to two-position four-way valves, wherein the valve core of the first valve 8 is in the AA position, so that the second cotton delivery pipe 4 and the first cotton inlet pipe 14 are connected, and the lint is sent to the first lint cleaning machine 5 for cleaning, and then discharged through the first cotton outlet pipe 11. At this time, the valve core of the second valve 7 is in the BB position, the first cotton outlet pipe 11 is connected with the first cotton collecting pipe 10, and the lint that has been cleaned once is sent to the first cotton collecting assembly 6, and can be further sent to the baler.

[0007] Furthermore, if the valve core of the first valve 8 is switched to the BB position, the second cotton delivery pipe 4 is connected to the second cotton inlet pipe 15, and the lint is directly sent to the second lint cleaning machine 9 for the first lint cleaning. The valve core of the second valve 7 is still in the BB position. At this time, the second cotton outlet pipe 12 is connected to the second cotton outlet pipe 13, and the second cotton outlet pipe 13 is connected to the first cotton inlet pipe 14. After the first lint cleaning, the lint is sent to the first lint cleaning machine 5 for the second lint cleaning. After the second lint cleaning, the first cotton outlet pipe 11 is connected to the first cotton collecting pipe 10, and the lint is then sent to the first cotton collecting assembly 6. It can be seen from this that Figure 1 and Figure 2 The lint cleaning part of the known cotton processing production line shown in the figure either performs one lint cleaning or two lint cleaning for cleaning lint cotton, and the overall application scope is relatively narrow, and one of the lint cleaning machines is often in a long-term idle state. Summary of the invention

[0008] The purpose of the present invention is to provide a lint cleaning device with a relatively wide application range. The present invention also provides a cotton processing production line equipped with the lint cleaning device.

[0009] According to a first aspect of an embodiment of the present invention, there is provided a lint cleaning device, comprising: The first cotton leveling device comprises a first main pipe for receiving incoming cotton and a first branch pipe and a second branch pipe connected to an outlet end of the first main pipe, wherein the second branch pipe is connected to a first bypass; the first cotton leveling device further comprises a first valve core group, which makes the opening and closing state between the second branch pipe and the first main pipe and the opening and closing state of the first bypass mutually exclusive under the condition that the first main pipe and the first branch pipe are always connected; A first leather cleaning machine, wherein the first cotton inlet pipe is connected to the first branch pipe; The second cotton feeding pipe of the second skin cleaning machine is connected with the second branch pipe; The third valve is a three-position four-way valve. Accordingly, the first valve channel of the third valve is used for cotton discharge, the second valve channel is connected to the first cotton discharge pipe of the first skin cleaning machine, the third valve channel is connected to the first bypass, and the fourth valve channel is connected to the second cotton discharge pipe of the second skin cleaning machine; the third valve core is provided with a third valve core, and when the third valve core is in the first position, the first cotton discharge pipe is connected to the first valve channel, the third valve channel is cut off, the second cotton discharge pipe is connected to the first valve channel, and the second cotton inlet pipe is correspondingly connected to the first main pipe; when the third valve core is in the second position, the first cotton discharge pipe is connected to the first bypass, and is cut off from the first valve channel and the fourth valve channel, the second cotton discharge pipe is connected to the first valve channel, and the second branch pipe is correspondingly cut off from the first main pipe; when the third valve core is in the third position, the first valve channel is connected to the first cotton discharge pipe and is cut off from the fourth valve channel, and the first bypass and the second branch pipe are cut off.

[0010] Optionally, the first valve core group includes a first valve core and a second valve core; The first valve core is located in the front stage of the second valve core, and the first valve core is used to control the opening and closing between the first main pipe and the second branch pipe; The second valve core is used to control the opening and closing of the bypass.

[0011] Optionally, the first tube shell of the first cotton leveling device is in the shape of a letter "I", so that the joint part of the first branch tube and the second branch tube forms a ridge-shaped boundary ridge in the first tube shell, and the first installation position of the first main tube is opposite to the boundary ridge; The first valve core is pivotally connected to the first installation position, and is used for opening and closing between the first main pipe and the second branch pipe based on engagement or separation with the boundary ridge.

[0012] Optionally, the first main pipe is inclined toward the side where the first branch pipe is located; The opening degree of the first valve core is half open to three quarters open.

[0013] Optionally, both the first valve core and the second valve core are plate-type valve cores, and a flexible sealing member is provided at the end of the first valve core.

[0014] Optionally, the four valve channels of the third valve are arranged in a uniform annular array in the valve housing of the third valve; The third valve core is a plate-type valve core pivotally connected to the center of the annular uniform array, and has a second position engaged with the first side wall of the first valve channel, a third position engaged with the second side wall, and a first position centrally located in the space between the first side wall and the second side wall; Wherein, the first side wall is the side wall where the second valve channel is located, and the second side wall is the side wall where the fourth valve channel is located; A partition is provided to extend from a predetermined inner wall of the valve housing to the pivotal position of the third valve core to separate the third valve passage from the fourth valve passage.

[0015] Optionally, a flexible sealing device is provided at the end of the third valve core; The end of the partition is provided with a flexible sealing device or is frictionally matched with the pivotal portion of the third valve core.

[0016] Optionally, the first skin cleaning machine, the second skin cleaning machine, the first cotton leveling device and the third valve constitute a first cleaning assembly; The first cleaning assembly has two parts; Accordingly, a second cotton leveling device is provided, the second cotton leveling device having a second main pipe, a third branch pipe and a fourth branch pipe; The third branch pipe is connected to a first cleaning assembly, the fourth branch pipe is connected to another first cleaning assembly, and the second cotton leveling device has a fourth valve core for opening and closing the fourth branch pipe, and the third branch pipe is connected to the second main pipe.

[0017] Optionally, the first cleaning assembly and the second cleaning assembly share a cotton collecting assembly, or the first cleaning assembly is connected to the first cotton collecting assembly, and the second cleaning assembly is connected to the second cotton collecting assembly.

[0018] According to a second aspect of an embodiment of the present invention, a cotton processing production line is provided, comprising the lint cleaning device described in the first aspect of the embodiment of the present invention.

[0019] According to the lint cleaning device of the embodiment of the present invention, the lint cleaning can be processed in parallel or in series by means of the cooperation between the first cotton leveling device and the third valve, so that when the lint impurity content is relatively low, parallel processing is used to improve the cleaning efficiency, and when the lint impurity content is relatively high, serial processing can be used to improve the cleaning rate, so it has a relatively good application range as a whole. Specifically, the first cotton leveling device has a first main pipe for receiving incoming cotton and a first branch pipe and a second branch pipe connected to the outlet end of the first main pipe, the first branch pipe is normally open and keeps in communication with the first lint cleaning machine. The second branch pipe is connected to the first bypass and is selectively opened. The third valve provided is a three-position four-way valve. Accordingly, the first valve channel of the third valve is used for cotton discharge, the second valve channel is connected to the first cotton discharge pipe of the first skin cleaning machine, the third valve channel is connected to the first bypass, and the fourth valve channel is connected to the second cotton discharge pipe of the second skin cleaning machine; the third valve core is provided with a third valve core, and when the third valve core is in the first position, the first cotton discharge pipe is connected to the first valve channel, the third valve channel is cut off, the second cotton discharge pipe is connected to the first valve channel, and the second cotton inlet pipe is correspondingly connected to the first main pipe, thereby realizing single cleaning of two machines, that is, parallel cleaning; when the third valve core is in the second position, the first cotton discharge pipe is connected to the first bypass, and is cut off from the first valve channel and the fourth valve channel, the second cotton discharge pipe is connected to the first valve channel, and the second branch pipe is correspondingly cut off from the first main pipe, thereby realizing double cleaning; when the third valve core is in the third position, the first valve channel is connected to the first cotton discharge pipe and is cut off from the fourth valve channel, the first bypass and the second branch pipe are cut off, thereby realizing single cleaning of a single machine. Thereby, the lint cleaning device can adapt to different usage conditions according to the impurity content of different incoming lint materials, thereby having better adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The present invention is a schematic diagram of the structure of a known lint cleaning device in a single lint cleaning state (including the preceding process equipment).

[0021] Figure 2 The present invention is a schematic diagram of the double-leather cleaning state structure of a known lint cleaning device (excluding the previous stage process equipment).

[0022] Figure 3 This is a schematic diagram of a single lint cleaning state of a lint cleaning device having two lint cleaning machines in one embodiment (including the preceding process equipment).

[0023] Figure 4 Schematic diagram of the structure of the first cotton leveling device in one embodiment.

[0024] Figure 5 Schematic diagram of the structure of the third valve in one embodiment.

[0025] Figure 6 The present invention is a schematic diagram of the serial double-leather-requesting state of a lint cleaning device having two lint cleaning machines in one embodiment.

[0026] Figure 7 The present invention is a schematic diagram of a lint cleaning device with two lint cleaning machines in parallel double lint cleaning state in one embodiment.

[0027] Figure 8 The present invention is a schematic structural diagram of a lint cleaning device having four lint cleaning machines sharing a lint collecting assembly in one embodiment.

[0028] Fig. 9 This is a schematic structural diagram of a lint cleaning device with four lint cleaning machines using two lint collecting assemblies (including pre-stage process equipment) in one embodiment.

[0029] In the figure: 1. cotton gin, 2. first cotton delivery pipe, 3. airflow type skin cleaning machine, 4. second cotton delivery pipe, 5. first skin cleaning machine, 6. first cotton collecting assembly, 7. second valve, 8. first valve, 9. second skin cleaning machine, 10. first cotton collecting pipe, 11. first cotton outlet pipe, 12. second cotton outlet pipe, 13. second cotton outlet pipe, 14. first cotton inlet pipe, 15. second cotton inlet pipe, 16. third valve, 17. first cotton leveling device, 18. first support Tube, 19. First main pipe, 20. Boundary ridge, 21. First valve core, 22. Second branch pipe, 23. First inflection point, 24. Second valve core, 25. First valve channel, 26. First valve wall, 27. Second valve channel, 28. Third valve core, 29. Third valve channel, 30. Partition, 31. Fourth valve channel, 32. Second valve wall, 33. Second connecting pipe, 34. Third cotton transport pipe, 35. Second cotton leveling device, 36. Second cotton collecting assembly.

[0030] A~H in the figure are used to indicate the valve core position. DETAILED DESCRIPTION

[0031] It should be known that for the cotton processing production line, it has a relatively obvious material flow relationship, and therefore has basically definite front and back stages. The corresponding front-stage process equipment refers to the process equipment that processes the material first, and the back-stage process equipment does the opposite.

[0032] In addition, for the transportation of materials, wind transportation is mainly used on the cotton processing production line, and the conveying force is mostly provided by induced wind. Therefore, the material flow between most of the process equipment on the cotton processing production line mainly relies on pipelines for material flow, and both seed cotton and lint cotton have good fluidity under the influence of wind, which provides a good foundation for valve control of material flow.

[0033] In the embodiments of the present invention, emphasis is placed on the improvement of the lint cleaning device, while the known process equipment of the cotton processing production line can be used for other parts. Only a brief description of other process equipment of the cotton processing production line is given here.

[0034] The following is a brief description of the general composition of the cotton processing production line: The first-level process equipment in the cotton processing production line is mostly a flower feeder. Seed cotton is usually first fed into the flower feeder at the station and then cleaned. Seed cotton cleaning has a relatively obvious distinction between hand-picked cotton and machine-picked cotton. The impurity content of hand-picked cotton is basically negligible, and not only does it not require seed cotton cleaning, but it also does not require lint cotton cleaning. However, hand-picked cotton is currently very scarce, and machine-picked cotton has become the mainstream.

[0035] Affected by the harvest time, weather, region, etc., the impurity content of seed cotton will also vary greatly. Therefore, there can be multiple levels of cleaning for seed cotton, such as a heavy impurity separator, an external suction cotton separator, a three-wire cleaning machine, a seed cotton separator, an inclined seed cotton cleaning machine, a purifying seed cotton cleaning machine, etc. As mentioned above, in the embodiments of the present invention, emphasis is placed on the configuration of process equipment for cleaning lint cotton, and the seed cotton cleaning part will not be repeated here. Those skilled in the art can use the configuration of seed cotton cleaning process equipment in the prior art.

[0036] After cleaning, the seed cotton can be ginned. Ginning is done on a cotton gin 1 to separate cotton seeds from cotton fibers. The cotton seeds can be sent to a linter for linting, and the collection of cotton fibers, i.e., lint, can be sent to a linter for cleaning. Figure 3 A cotton gin 1 is shown in the figure for schematic representation only. It should be known that a plurality of cotton gins 1 are often provided on an existing cotton processing production line. Those skilled in the art should have a clear understanding of this, and no further details will be given here.

[0037] After cleaning, the lint is collected and the conveying air is separated from the lint in the cotton collecting assembly. The lint is then sent to the baler for packaging. The cotton blocks formed by packaging and compaction generally need to be baled, and then the baled cotton bales are covered, marked, and coded.

[0038] The process equipment for lint cleaning is located between the cotton gin and the baler to ensure that the lint has relatively good quality.

[0039] Figure 8 and Fig. 9 In the embodiment, the second cotton leveling device 35 can be completely identical in structure to the first cotton leveling device 17, so as to unify spare parts. At the same time, since the second cotton leveling device 35 does not have a bypass, the corresponding bypass interface can be completely omitted, but in order to facilitate the overall description, the first cotton leveling device 17 is described in detail below, and the second cotton leveling device 35 can refer to the relevant description of the first cotton leveling device 17, and the second cotton leveling device 35 is briefly described.

[0040] The first cotton leveling device 17 is described below. The first cotton leveling device 17 is also a valve as a whole. However, in some implementations, the first valve core 21 has an opening control to facilitate simultaneous feeding of materials to the two branches. Based on the concept of the present invention, the two branches have substantially the same feeding rate, which is a relatively ideal state. Therefore, it is more accurate to name it as a cotton leveling device. However, it should be understood that the naming of technical features focuses on distinguishing them from other technical features, without specifically defining their structure. For the definition of relevant technical features, the specific description terms shall prevail.

[0041] Figure 4 It is an example of the first cotton leveling device 17, which is a tube-shell structure as a whole, and has three obvious tube bodies in the figure, namely the first main pipe 19, the first branch pipe 18 and the second branch pipe 22, wherein the first main pipe 19 is used to receive incoming materials, such as being directly connected to the second cotton conveying pipe 4, and its preceding stage can also be, for example, the second cotton leveling device 35, so the first main pipe 19 has a first feed port, and the first cotton leveling device 17 is used for discharging materials, and has a first discharge port and a second discharge port accordingly.

[0042] The corresponding first branch pipe 18 and the second branch pipe 22 are connected to the outlet end of the first main pipe 19. Figure 4 In the illustrated structure, the tube shell of the first cotton leveling device 17 is roughly an U-shaped structure, so as to facilitate combing the lint flow.

[0043] More specifically, the angle between the main body of the first branch pipe 18 and the main body of the second branch pipe 22 is 75°~120°, and the angle between the first main pipe 19 and the first branch pipe 18 is 60°~75°. Under this condition, the angle between the first main pipe 19 and the second branch pipe 22 is 165°~225° (in order to reflect the positional relationship, the overall 360° is used to determine the position of each pipeline).

[0044] The second branch pipe 22 is provided with a first bypass interface for connecting to the first bypass.

[0045] Furthermore, the first cotton leveling device 17 also includes a first valve core group, which makes the opening and closing states of the second branch pipe 22 and the first main pipe 19 and the opening and closing states of the first bypass mutually exclusive under the condition that the first main pipe 19 and the first branch pipe 18 are always connected, that is, when the second branch pipe 22 and the first main pipe 19 are connected, the first bypass is cut off, conversely, if the second branch pipe 22 and the first main pipe 19 are cut off, the first bypass is connected.

[0046] The first branch pipe 18 is used to connect the first cotton leveling device 17 with the first skin cleaning machine 5 and is in a real-time connected state, while the second branch pipe 22 is used to connect the first cotton leveling device 17 with the second skin cleaning machine 9.

[0047] A third valve 16 is also provided. The third valve 16 is a three-position four-way valve having four corresponding pipe interfaces. For the convenience of description, the valve cavity of the third valve 16 is divided into four main parts, namely the first to fourth valve channels 31.

[0048] The following describes the cooperative working state of the third valve 16 and the first cotton leveling device 17, wherein the first valve channel 25 of the third valve 16 is used for cotton discharge, so as to be connected to the cotton collecting assembly. The second valve channel 27 is connected to the first cotton discharge pipe 11 of the first skin cleaning machine 5, and the third valve channel 29 is connected to the first bypass, and the first bypass constitutes Figure 6 The fourth valve channel 31 is connected to the second cotton outlet pipe 12 of the second skin cleaning machine 9.

[0049] The third valve 16 is provided with a third valve core 28. As mentioned above, the third valve 16 is equivalent to a three-position four-way valve. Figure 5 and Figure 7 The third valve core 28 is shown in the state when it is in the first position. At this time, the first cotton outlet pipe 11 is connected to the first valve channel 25 through the second valve channel 27; at the same time, the third valve channel 29 is cut off, which is equivalent to the second connecting pipe 33 being cut off. Figure 7 In the embodiment, the second cotton outlet pipe 12 is connected to the first valve channel 25, and the second cotton inlet pipe 15 is connected to the first main pipe 19. Figure 4 As can be seen, when the third valve core 28 is in the first position, the first valve core 21 is opened, and the lint is divided into two from the end of the first main pipe 19. One part enters the first lint cleaning machine 5 through the first branch pipe 18 and the first cotton inlet 14 that are connected in real time for cleaning, and the cleaned lint is discharged through the first cotton outlet pipe 11-first valve channel 27-first valve channel 25. The other part enters the second lint cleaning machine 9 through the second branch pipe 22-second cotton inlet pipe 15, and after cleaning, it is discharged through the second cotton outlet pipe-fourth valve channel 31-first valve channel 25. Figure 7 It can be seen from the illustrated structure that when the third valve 16 is in the first position, the first skin cleaning machine 5 and the second skin cleaning machine 9 are in parallel state, which can improve the cleaning efficiency. At this time, the first valve core 21 in the first cotton leveling device 17 is also required to be opened, and the second valve core 24 is closed, so that the first branch pipe 18 and the second branch pipe 22 are both connected to the first main pipe 19, but the first bypass is in a closed state.

[0050] Figure 6 The figure shows the state when the third valve core 28 is in the second position, and the figure also shows the state of the first cotton leveling device 17. Figure 6In the process, the first cotton outlet pipe 11 is connected to the first bypass, and is cut off from the first valve channel 25 and the fourth valve channel 31. Since the first main pipe 19 is connected to the first cotton inlet pipe 14 in real time, the lint cotton will be cleaned by the first skin cleaning machine 5 and will follow the first cotton outlet pipe 11-second valve channel 27-third valve channel 29-second connecting pipe 33-second cotton inlet pipe 15-second skin cleaning machine 9. After the second cleaning, the lint cotton will be discharged from the second cotton outlet pipe 12 through the fourth valve channel 31-first valve channel 25. At this time, the second branch pipe 22 is correspondingly cut off from the first main pipe 19, and the first bypass is opened. Figure 6 The direction of the lint cotton shows that the seed cotton is exported after being cleaned twice.

[0051] Figure 3 The figure shows the state when the third valve core 28 is in the third position. It can be clearly seen from the figure that the first valve channel 25 is connected with the second valve channel 27, but the first valve channel 25 is blocked with the fourth valve channel 31, and the second branch pipe 22 and the first bypass are both blocked. Under this condition, the lint cotton enters the first leather cleaning machine 5 through the first branch pipe 18-the first cotton inlet pipe 14, and after cleaning, it is discharged through the first cotton outlet pipe 11-the second valve channel 27-the first valve channel 25. That is, only the first leather cleaning machine 5 is connected to the production line for single-machine single cleaning.

[0052] Figure 4 In the embodiment of the present invention, the first cotton leveling device 17 is equipped with two valve cores, namely the first valve core 21 and the second valve core 24 shown in the figure. The two valve cores shown in the figure are both plate-type valve cores, which are different from the valve plate of the plug valve adopting a linear motion. In the embodiment of the present invention, the first valve core 21 and the second valve core 24 both adopt a swinging method to change their positions, wherein the upper end of the first valve core 21 is at Figure 4 The hub is connected to the upper wall of the end of the first main pipe 19 and is cantilevered downward. When it is roughly in a hanging state, it can cover the inlet of the second branch pipe 22, thereby having better reliability.

[0053] In addition, from Figure 4 As can be seen in the figure, the overhanging end of the first valve core 21, that is, the end, is connected to the Figure 4 The junction point between the boundary ridges 20 shown in the figure is slightly backward relative to the first valve core 21. This is because the lint will have a certain impact after entering from the first main pipe 19. The impact force on the slightly deflected first valve core 21 is offset by its own gravity to a certain extent, making it easy to obtain a relatively reliable sealing state. This will be further explained below.

[0054] exist Figure 4 In the illustrated structure, the first valve core 21 is located in front of the second valve core 24, and the second valve core 24 is used to control the opening and closing of the bypass. This method of two valve cores controlling two passages respectively has relatively high control reliability and relatively little interference between them.

[0055] Furthermore, the first tube shell of the first cotton leveling device 17 is in the shape of an I, so that the connecting part of the first branch pipe 18 and the second branch pipe 22 forms a ridge-like boundary ridge 20 in the first tube shell, and a first installation position at the end of the first main pipe 19 is opposite to the boundary ridge 20; furthermore, the first valve core 21 is pivotally connected to the first installation position, and is used for opening and closing between the first main pipe 19 and the second branch pipe 22 based on the engagement or separation with the boundary ridge 20.

[0056] in 3 and Figure 4 In the illustrated structure, the main part of the second cotton transport pipe 4 for transporting lint from the airflow-type skin cleaning machine 3 to the first cotton leveling device 17 is horizontally arranged, and the corresponding pipe joint of the first main pipe 19 is a horizontal pipe joint, which can also form a certain angle with the horizontal plane, which angle is not greater than 30°, and the two branches are correspondingly located on the lower side of the first main pipe 19.

[0057] With the incoming material direction as a reference, the first branch pipe 18 is connected from the end of the first main pipe 19 and tilted forward, while the second branch pipe 22 is connected from the end of the first main pipe 19 and tilted backward, thereby forming the aforementioned I-shaped structure. This connection method will form a straddling wedge-shaped tube cavity at the connection of the three tubes, and the lower front point of the straddling is the aforementioned boundary ridge 20. The first valve core 21 controls the opening and closing of the second branch pipe 22 by engaging or disengaging with the boundary ridge 20.

[0058] Relatively speaking, the first valve core 21 with a valve plate structure has a cotton facing surface for facing the incoming lint cotton material and a back surface opposite to the cotton facing surface. At this time, the boundary ridge 20 is slightly offset backward relative to the pivot of the first valve core 21 to facilitate combing the lint cotton and reduce the burden of the driving device driving the first valve core 21.

[0059] Taking the vertical plane passing through the pivot axis of the first valve core 21 as a reference plane, the angle between the first valve core 21 and the vertical plane when it is engaged with the boundary ridge 20 is 5°~15°, that is, when the first valve core 21 closes the second branch pipe 22, the drooping first valve core 21 deflects backward by 5°~15°.

[0060] Furthermore, based on the above description, it can be known that the first main pipe 19 is inclined toward the side where the first branch pipe 18 is located, so as to form the aforementioned I-shaped structure.

[0061] exist Figure 7 In the illustrated structure, the first valve core 21 is in a fully open state, but in some embodiments, the first valve core 21 does not have to be fully open to allow the lint to be reasonably distributed between the first branch pipe 18 and the second branch pipe 22. Therefore, the first valve core 21 can be designed as a valve plate with adjustable opening.

[0062] See also Figure 4 In the illustrated structure, after the lint is fed from the first main pipe 19, the forward-flowing lint (the front in the lint flow direction) is more likely to enter the second branch pipe 22. Figure 4 In the embodiment, the first valve core 21 is not fully opened, but is roughly in a half-open state, which is conducive to combing the lint and reasonably distributing it between the two branches.

[0063] Furthermore, the opening degree of the first valve core 21 is half open to three quarters open, and the opening degree of the first valve core 31 can be adjusted on site according to the processing capacity of the two skin cleaning machines.

[0064] In addition, in order to improve the tightness of the valve when it is closed, under the condition that the first valve core 21 and the second valve core 24 adopt plate-type valve cores, at least the end of the first valve core 21 is provided with a flexible seal, such as a rubber skin installed at the end of the first valve core 21 body by riveting or other connection methods.

[0065] For the second valve core 24 , since the bypass is located on a side wall of the second branch pipe 22 , an annular sealing ring may be provided at a sealing interface corresponding to the periphery of the second valve core 24 .

[0066] Figure 5 This is an exemplary structure of the third valve 16. As can be seen from the figure, the four valve channels of the third valve 16 are arranged in a uniform annular array in the valve housing of the third valve 16, and are arranged in a cross shape as a whole.

[0067] Furthermore, the third valve core 28 is a plate-type valve core pivotally connected to the center of the annular uniform array and has a second position (see Figure 6 ), a third position engaged with the second side wall of the first valve channel 25 (see Figure 3 ), and the first position centrally located between the first side wall and the second side wall (see Figure 5 and Figure 7 ).

[0068] Correspondingly, the first side wall is the side wall where the second valve passage 27 is located, and the second side wall is the side wall where the fourth valve passage 31 is located.

[0069] See also Figure 5 A partition 30 is also provided to extend from a predetermined inner wall of the valve housing to the pivotal joint of the third valve core 28 to separate the third valve channel 29 from the fourth valve channel 31. The partition 30 is a statically arranged component, but because the third valve core 28 is a movable component, the engagement of the valve plate 30 and the pivotal joint of the third valve core 28 can be expressed as a combination to form a static seal, or a dynamic seal. For example, the valve shaft of the third valve core 28 is a coaxial one, and both ends are mounted on the valve housing through bearing seats. The rotating valve shaft and the partition 20 can be a mechanical contact dynamic seal, or an interference avoidance gap can be left. The interference avoidance gap should be as small as possible, for example, 0.3~2.0mm.

[0070] If a mechanical contact type dynamic seal is adopted, a rubber sealing strip may be provided at the end of the partition plate 30 that contacts the valve shaft of the third valve core 28 .

[0071] In addition, if the valve shaft of the third valve core 28 is located in a statically arranged sleeve, the third valve core 28 and the valve shaft can be connected by a plurality of intervening strips, that is, the sleeve is provided with side holes for the insertion of the intervening strips. The partition plate 30 and the sleeve can be integrally connected to form a static seal.

[0072] In addition, for the third valve core 28, a flexible sealing device, such as a rubber strip, is also provided at its end to improve the overall sealing performance.

[0073] Figure 8 and Fig. 9 A more complex configuration is shown, with the help of which more lint cleaning machines can be connected, which has better adaptability to lint quality while taking into account efficiency and cleaning rate.

[0074] See also Figure 8 and Fig. 9 Specifically, the first skin cleaning machine 5, the second skin cleaning machine 9, the first cotton leveling device 17 and the third valve 16 constitute a first cleaning assembly, and the first cleaning assembly has two. Correspondingly, a second cotton leveling device 35 is provided, and the second cotton leveling device 35 has a second main pipe, a third branch pipe and a fourth branch pipe; wherein the third branch pipe is connected to a first cleaning assembly, and the fourth branch pipe is connected to another first cleaning assembly, and the second cotton leveling device has a fourth valve core for opening and closing the fourth branch pipe, and the third branch pipe is connected to the second main pipe.

[0075] Regarding the second cotton leveling device 35 , refer to the aforementioned description about the first cotton leveling device 17 , and all parts except the bypass are applicable to the second cotton leveling device 35 .

[0076] Figure 8 Four leather cleaning machines share one first cotton collecting assembly 6, and Fig. 9 In the embodiment, two skin cleaning machines share the first cotton collecting assembly 6, and the other two skin cleaning machines share the second cotton collecting assembly 36. The overall layout can be configured according to the site conditions and will not be described in detail here.

Claims

1. A lint cleaning device, characterized in that: include: The first cotton leveling device comprises a first main pipe for receiving incoming cotton and a first branch pipe and a second branch pipe connected to an outlet end of the first main pipe, wherein the second branch pipe is connected to a first bypass; the first cotton leveling device further comprises a first valve core group, which makes the opening and closing state between the second branch pipe and the first main pipe and the opening and closing state of the first bypass mutually exclusive under the condition that the first main pipe and the first branch pipe are always connected; The first leather cleaning machine has a first cotton inlet pipe connected to the first branch pipe; The second cotton feeding pipe of the second skin cleaning machine is connected with the second branch pipe; The third valve is a three-position four-way valve. Accordingly, the first valve channel of the third valve is used for cotton discharge, the second valve channel is connected to the first cotton discharge pipe of the first skin cleaning machine, the third valve channel is connected to the first bypass, and the fourth valve channel is connected to the second cotton discharge pipe of the second skin cleaning machine; the third valve core is provided with a third valve core, and when the third valve core is in the first position, the first cotton discharge pipe is connected to the first valve channel, the third valve channel is cut off, the second cotton discharge pipe is connected to the first valve channel, and the second cotton inlet pipe is correspondingly connected to the first main pipe; when the third valve core is in the second position, the first cotton discharge pipe is connected to the first bypass, and is cut off from the first valve channel and the fourth valve channel, the second cotton discharge pipe is connected to the first valve channel, and the second branch pipe is correspondingly cut off from the first main pipe; when the third valve core is in the third position, the first valve channel is connected to the first cotton discharge pipe and is cut off from the fourth valve channel, and the first bypass and the second branch pipe are cut off.

2. The lint cleaning device according to claim 1, characterized in that: The first valve core group includes a first valve core and a second valve core; The first valve core is located in the front stage of the second valve core, and the first valve core is used to control the opening and closing between the first main pipe and the second branch pipe; The second valve core is used to control the opening and closing of the bypass.

3. The lint cleaning device according to claim 2, characterized in that: The first tube shell of the first cotton leveling device is in the shape of a letter "I", so that the joint part of the first branch tube and the second branch tube forms a ridge in the first tube shell as a ridge-like boundary, and the first installation position of the first main tube is opposite to the ridge; The first valve core is pivotally connected to the first installation position, and is used for opening and closing between the first main pipe and the second branch pipe based on engagement or separation with the boundary ridge.

4. The lint cleaning device according to claim 3, characterized in that: The first main pipe is tilted toward the side where the first branch pipe is located; The opening degree of the first valve core is half open to three quarters open.

5. The lint cleaning device according to claim 2, characterized in that: The first valve core and the second valve core are both plate-type valve cores, and a flexible sealing member is provided at the end of the first valve core.

6. The lint cleaning device according to claim 1, characterized in that: The four valve channels of the third valve are arranged in a uniform annular array in the valve housing of the third valve; The third valve core is a plate-type valve core pivotally connected to the center of the annular uniform array, and has a second position engaged with the first side wall of the first valve channel, a third position engaged with the second side wall, and a first position centrally located in the space between the first side wall and the second side wall; Wherein, the first side wall is the side wall on the side where the second valve channel is located, and the second side wall is the side wall on the side where the fourth valve channel is located; A partition is provided to extend from a predetermined inner wall of the valve housing to the pivotal position of the third valve core to separate the third valve passage from the fourth valve passage.

7. The lint cleaning device according to claim 6, characterized in that: A flexible sealing device is provided at the end of the third valve core; The end of the partition is provided with a flexible sealing device or is frictionally matched with the pivotal portion of the third valve core.

8. The lint cleaning device according to claim 1, characterized in that: The first skin cleaning machine, the second skin cleaning machine, the first cotton leveling device and the third valve constitute a first cleaning assembly; The first cleaning assembly has two parts; Accordingly, a second cotton leveling device is provided, the second cotton leveling device having a second main pipe, a third branch pipe and a fourth branch pipe; The third branch pipe is connected to a first cleaning assembly, the fourth branch pipe is connected to another first cleaning assembly, and the second cotton leveling device has a fourth valve core for opening and closing the fourth branch pipe, and the third branch pipe is connected to the second main pipe.

9. The lint cleaning device according to claim 1, characterized in that: The first cleaning assembly and the second cleaning assembly share a cotton collecting assembly, or the first cleaning assembly is connected to the first cotton collecting assembly, and the second cleaning assembly is connected to the second cotton collecting assembly.

10. A cotton processing production line, characterized in that: The invention comprises the lint cleaning device as described in any one of claims 1 to 9.

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