Tangential flow type secondary crushing and rubbing device

Abstract

The invention relates to the technical field of harvester smashing devices, and particularly discloses a tangential flow type secondary smashing and rubbing device which comprises a connecting shell, a first movable cutter assembly, a second movable cutter assembly, a first fixed cutter assembly, a second fixed cutter assembly and a transmission system. The first movable cutter assembly and the first fixed cutter assembly are installed on the upper portion and the lower portion in the material input port respectively, the transmission system is used for driving the first movable cutter assembly and the second movable cutter assembly to rotate, a material output port is formed in the other end of the connecting shell, and the second movable cutter assembly and the second fixed cutter assembly are installed in one side of the material output port in the rotating process. The middle of the connecting shell is provided with a logistics channel used for communicating the material input port and the material output port, and the end, close to the input port, of the logistics channel is wider than the other end. According to the device, the rapid passing ability of the straw is improved, the power consumption is reduced, the rubbing efficiency is improved, and the income of a machine raising user is increased under the condition that the crushing and rubbing quality is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of harvester crushing devices, and particularly to a tangential flow secondary crushing and rubbing device. Background Art

[0002] The existing secondary crushing and rubbing system of a harvester consists of a vertical shaft flow crushing rotor and four groups of parallel arranged fixed knife groups. During operation, the straw materials after crushing and rubbing need to move axially under the action of wind force and the continuous pushing of the following straw. The materials move from one end of the shaft to the other end and are repeatedly crushed and rubbed. The feeding amount is small, the moving speed is slow, the power consumption is large, and it is often blocked, which limits the operating speed of the machine and reduces the baling efficiency. Summary of the Invention

[0003] The purpose of the present invention is to provide a tangential flow secondary crushing and rubbing device, which improves the rapid passing performance of straw, reduces power consumption under the condition of ensuring the quality of crushing and rubbing, improves the rubbing efficiency, and increases the income of machine maintenance users.

[0004] The purpose of the present invention can be achieved by the following technical solutions:

[0005] A tangential flow secondary crushing and rubbing device includes a connecting housing, a first moving knife assembly, a second moving knife assembly, a first fixed knife assembly, a second fixed knife assembly, and a transmission system. One end of the connecting housing is provided with a material input port. The first moving knife assembly and the first fixed knife assembly are respectively installed in the upper and lower parts inside the material input port. The transmission system is used to drive the first moving knife assembly and the second moving knife assembly to rotate. During the rotation of the first moving knife assembly, it cooperates with the first fixed knife assembly to initially crush and rub the materials entering from the input port. The other end of the connecting housing is provided with a material output port. The second moving knife assembly and the second fixed knife assembly are respectively installed inside one side of the material output port during the rotation process. The second moving knife assembly and the second fixed knife assembly cooperate to secondary crush and rub the materials. A material flow channel for connecting the material input port and the material output port is arranged in the middle of the connecting housing. The width of the material flow channel near the input port is greater than that of the other end.

[0006] In a further solution, the first moving knife assembly includes a first rotating shaft. A plurality of moving knife groups are arranged horizontally and at intervals on the first rotating shaft. There is a circumferential interval between adjacent moving knife groups. The moving knife group includes symmetric moving knife blades. The first fixed knife assembly includes three rows of fixed knife groups. The cutting edge directions of adjacent two rows of fixed knife groups are opposite. The moving knife blades of the moving knife group cooperate with the fixed knife blades on the fixed knife group to cut at intervals.

[0007] In a further embodiment, the second moving knife assembly includes a second rotating shaft, on which a plurality of moving knife groups are arranged transversely at intervals. The second fixed knife assembly includes two rows of fixed knife groups, and the cutting edges of the two rows of fixed knife groups are in opposite directions. The moving blades of the moving knife groups cooperate with the fixed blades on the fixed knife groups to cut at intervals.

[0008] In a further embodiment, the transmission system includes a driven wheel and a belt assembly. The belt wheels of the belt assembly are respectively connected to one ends of the first rotating shaft and the second rotating shaft. The driven wheel is connected to the other end of the second rotating shaft, and both the first rotating shaft and the second rotating shaft are rotatably connected to the connecting housing. The driven wheel drives the second rotating shaft to rotate, and drives the first rotating shaft to rotate through the belt assembly.

[0009] In a further embodiment, a tensioning assembly is connected to the connecting housing, and the tensioning assembly is used for tensioning the belt of the belt assembly.

[0010] In a further embodiment, a plurality of moving knife groups are arranged at uniform intervals in the circumferential direction.

[0011] In a further embodiment, among the six moving knife groups in the circumferential direction, the cutting edges of three adjacent ones are in the same direction, and the cutting edges of the other three are in the opposite direction.

[0012] In a further embodiment, a trapezoidal housing is connected to the inner wall of the upper side of the middle part of the connecting housing. The material flow channel is formed by the outer wall of the trapezoidal housing and the inner wall of the connecting housing. One end of the trapezoidal housing and the inner wall of the connecting housing form a rotating space for the first moving knife assembly, and the other end of the trapezoidal housing and the inner wall of the connecting housing form a rotating space for the second moving knife assembly.

[0013] In a further embodiment, the gaps between the two side surfaces of the trapezoidal housing and the tips of the moving knife groups are smaller than the gaps required for the material to rotate and pass through.

[0014] In a further embodiment, the inner bottom surface of the connecting housing is smoothly connected, and the height near the first moving knife assembly is lower than the height near the second moving knife assembly.

[0015] Advantages of the present invention:

[0016] By arranging two tangential flow crushing devices front and back, optimizing the structural design and arrangement of the moving knives and fixed knives for crushing and rubbing, and optimizing the design of the material flow channel, the present invention realizes the smoothness of the material movement, increases the feeding amount, improves the crushing and rubbing effects of the straw, reduces the power consumption, improves the operation efficiency, and increases the income of the machine users. Description of the Drawings

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic internal connection diagram of a tangential flow secondary crushing and rubbing device in an embodiment of the present invention;

[0019] Figure 2 It is a schematic external connection diagram of a tangential flow secondary crushing and rubbing device in an embodiment of the present invention;

[0020] Figure 3 It is a schematic connection diagram of a belt assembly in an embodiment of the present invention;

[0021] Figure 4 It is a schematic connection diagram at a first moving knife assembly in an embodiment of the present invention;

[0022] In the figure: 1. Connecting housing; 11. Material input port; 12. Material output port; 13. Inner bottom surface; 2. First moving knife assembly; 21. First rotating shaft; 22. Moving knife group; 221. Moving knife blade; 3. Second moving knife assembly; 31. Second rotating shaft; 4. First fixed knife assembly; 41. Fixed knife group; 411. Fixed knife blade; 5. Second fixed knife assembly; 6. Transmission system; 61. Driven wheel; 62. Belt assembly; 63. Tensioning assembly; 7. Logistics channel; 8. Trapezoidal housing. Detailed implementation manners

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0024] As Figure 1 shown, a tangential flow secondary crushing and rubbing device includes a connecting housing 1, a first moving knife assembly 2, a second moving knife assembly 3, a first fixed knife assembly 4, a second fixed knife assembly 5 and a transmission system 6 as Figure 2 shown, referring to Figure 1 and Figure 2As shown in the figure, one end of the connecting housing 1 is provided with a material input port 11. The first moving knife assembly 2 and the first fixed knife assembly 4 are respectively installed in the upper and lower parts inside the material input port 11. The transmission system 6 is used to drive the first moving knife assembly 2 and the second moving knife assembly 3 to rotate. When the first moving knife assembly 2 rotates, it cooperates with the first fixed knife assembly 4 to initially crush and rub the material entering from the input port. The other end of the connecting housing 1 is provided with a material output port 12. The second moving knife assembly 3 and the second fixed knife assembly 5 are respectively installed inside one side of the material output port 12. When the second moving knife assembly 3 rotates, it cooperates with the second fixed knife assembly 5 to secondarily crush and rub the material. The middle part of the connecting housing 1 is provided with a material flow channel 7 for connecting the material input port 11 and the material output port 12. The width of the material flow channel 7 near the input port is greater than that of the other end.

[0025] Its working principle is as follows: The straw or similar materials collected by the pick-up machine converge in the middle and are fed into the front-end input port of the connecting housing 1 by using the rotary throwing plate. The relatively thick straw is sent to the positions of the first moving knife assembly 2 and the first fixed knife assembly 4. The material will enter in the direction of the vertical axis. Under the action of the moving knife and the fixed knife, the straw is initially crushed and rubbed. When the straw is separated from the first moving knife assembly 2 after being crushed and rubbed, it will be thrown into the material flow channel 7. The material flow channel 7 has an anti-backflow function to prevent the straw from returning to the first moving knife assembly 2 and the front-end pick-up machine again. The other end of the material flow channel 7 is connected to the second moving knife assembly 3 and the second fixed knife assembly 5. After the straw arrives, it is accelerated, crushed and rubbed again and then thrown into the fan of the baler and accelerated to the subsequent functional parts. Two cuts can increase the material travel distance, increase the rubbing and crushing time, and improve the rubbing and crushing effect.

[0026] According to the above working principle, preferred embodiments or implementation manners are provided, such as Figure 1 or Figure 4 As shown in the figure, the first moving knife assembly 2 includes a first rotating shaft 21. A plurality of moving knife groups 22 are arranged horizontally and at intervals on the first rotating shaft 21. There is a circumferential interval between adjacent moving knife groups 22. The moving knife group 22 includes symmetric moving knife blades 221. The first fixed knife assembly 4 includes three rows of fixed knife groups 41. The cutting edges of adjacent two rows of fixed knife groups 41 are in opposite directions. The moving knife blades 221 of the moving knife group 22 cooperate with the fixed knife blades 411 on the fixed knife group 41 to cut at intervals. The gap between the cutting edges of the moving knife and the fixed knife is preferably 12 mm. After the first row of materials is cut, when it reaches the second row, it will not be cut because the edge directions are opposite, but will be squeezed or disturbed, increasing the resistance to the forward movement of the material and not passing through quickly. When it reaches the third row of knives, like the first row, it is cut again. If they are all arranged in the same way, the materials will be directly cut quickly without achieving the rubbing effect. The smaller the resistance, the greater the fluidity. The straw will have hard lumps and not be completely soft and flexible, affecting the taste of the feed. In the figure, the wide black and narrow black hatching of the blades represents different cutting edge directions.

[0027] Such as Figure 1As shown in the figure, the second moving knife assembly 3 includes a second rotating shaft 31. A plurality of moving knife groups 22 are arranged horizontally and at intervals on the second rotating shaft 31. The second fixed knife assembly 5 includes two rows of fixed knife groups 41. The cutting edges of the two rows of fixed knife groups 41 are in opposite directions. The moving blades 221 of the moving knife groups 22 cooperate with the fixed blades 411 on the fixed knife groups 41 for intermittent cutting. The two rows of fixed knife groups 41 are arranged in this way to make the material move in a short S-shaped curve in the forward direction, swing back and forth left and right, increase the residence time of the material, and prolong the kneading time, so that the hard material can be kneaded soft and the feed has a better taste.

[0028] As Figure 2 shown in the figure, the transmission system 6 includes a driven wheel 61 and a belt assembly 62. The belt wheels of the belt assembly 62 are respectively connected to one ends of the first rotating shaft 21 and the second rotating shaft 31. The driven wheel 61 is connected to the other end of the second rotating shaft 31. Both the first rotating shaft 21 and the second rotating shaft 31 are rotatably connected to the connecting housing 1. The driven wheel 61 drives the second rotating shaft 31 to rotate, driving the belt assembly 62 to drive the first rotating shaft 21 to rotate. Such a structure is more compact, can improve the high shear force while reducing power consumption.

[0029] As Figure 3 shown in the figure, a tensioning assembly 63 is connected to the connecting housing 1. The tensioning assembly 63 is used for tensioning the belt of the belt assembly 62. It is used to prevent the belt from slipping, obtain a greater torque, and improve the shear force of the moving knife.

[0030] As Figure 1 shown in the figure, a plurality of moving knife groups 22 are arranged at equal intervals of 60 degrees in the circumferential direction. There are a total of six groups of blades at an interval of 60°. Among the six moving knife groups 22 in the circumferential direction, the cutting edges of three adjacent groups are in the same direction, and the cutting edges of the other three groups are in the opposite direction. The cutting edges of each group of blades are opposite, which can realize back-and-forth cutting. When cutting, as long as one moving blade 221 can cut with one fixed blade, the rest is back-and-forth stirring.

[0031] A trapezoidal housing 8 is connected to the inner wall of the upper side of the middle part of the connecting housing 1. The material flow channel 7 is formed by the outer wall of the trapezoidal housing 8 and the inner wall of the connecting housing 1. One end of the trapezoidal housing 8 and the inner wall of the connecting housing 1 form a rotating space for the first moving knife assembly 2, and the other end of the trapezoidal housing 8 and the inner wall of the connecting housing 1 form a rotating space for the second moving knife assembly 3. This can not only be used to form the material flow channel 7 to prevent the material from being brought back when the first moving knife assembly 2 and the second moving knife assembly 3 rotate, but also increase the strength of the connecting housing 1.

[0032] The gap h between the two side surfaces of the trapezoidal housing 8 and the tips of the moving knife groups 22 is smaller than the gap required for the material to rotate through. This is mainly to play a role in scraping the material to prevent the material from being brought back when the first moving knife assembly 2 and the second moving knife assembly 3 rotate.

[0033] It is smoothly connected to the inner bottom surface 13 of the connecting housing 1, and the height near the first moving knife assembly 2 is lower than the height near the second moving knife assembly 3. This facilitates the aggregation of materials, improves the cutting efficiency, and is convenient for secondary crushing, cutting, and wire rubbing.

[0034] When in use, it can be, refer to Figure 1 and Figure 2 As shown, under the action of the moving knives of the moving knife group 22 and the fixed knives of the fixed knife group 41, the straw is initially crushed and wire rubbed. Since the first fixed knife assembly 4 is divided into three rows, and the blade edges of the first row and the third row are opposite to those of the second row, the straw will swing back and forth with the different blade arrangements, blocking the rapid passage of the straw and increasing the wire rubbing effect. At this time, the straw detaches from the first moving knife assembly 2 and is thrown into the material flow channel 7. This material flow channel 7 has an anti-backflow function, and the scraped materials accumulate in the material flow channel 7 and are transported forward along the material flow channel 7 by the rear moving knife group 22 and the wind pressure, and are accelerated, crushed, and wire rubbed again at the second moving knife assembly 3. When the second fixed knife assembly 5 is arranged, the first row and the second row are opposite to each other, and the aggregated and transported materials are crushed again to improve the crushing and wire rubbing effect.

[0035] It should be noted that the terms "first", "second", etc. in this application are used to distinguish similar objects and do not necessarily describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances for the embodiments of this application described here. In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings.

[0036] In the description of this specification, the description referring to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0037] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A tangential flow type secondary crushing and rubbing device, characterized in that, it includes a connecting housing (1), a first moving knife assembly (2), a second moving knife assembly (3), a first fixed knife assembly (4), a second fixed knife assembly (5) and a transmission system (6). One end of the connecting housing (1) is provided with a material input port (11). The first moving knife assembly (2) and the first fixed knife assembly (4) are respectively installed in the upper and lower parts inside the material input port (11). The transmission system (6) is used to drive the first moving knife assembly (2) and the second moving knife assembly (3) to rotate. During the rotation of the first moving knife assembly (2), it cooperates with the first fixed knife assembly (4) to initially crush and rub the material entering from the input port. The other end of the connecting housing (1) is provided with a material output port (12). The second moving knife assembly (3) and the second fixed knife assembly (5) are respectively installed inside one side of the material output port (12) during the rotation of the second moving knife assembly (3). The second moving knife assembly (3) and the second fixed knife assembly (5) cooperate to perform secondary crushing and rubbing of the material. A material flow channel (7) for connecting the material input port (11) and the material output port (12) is arranged in the middle of the connecting housing (1), and the width of the material flow channel (7) at one end close to the input port is greater than that at the other end.

2. A tangential flow type secondary crushing and rubbing device according to claim 1, characterized in that, the first moving knife assembly (2) includes a first rotating shaft (21). A plurality of moving knife groups (22) are arranged horizontally and at intervals on the first rotating shaft (21). There is a circumferential interval between adjacent moving knife groups (22). The moving knife group (22) includes symmetrical moving knife blades (221). The first fixed knife assembly (4) includes three rows of fixed knife groups (41). The cutting edges of adjacent two rows of fixed knife groups (41) are in opposite directions. The moving knife blades (221) of the moving knife group (22) cooperate with the fixed knife blades (411) on the fixed knife group (41) to perform intermittent cutting.

3. A tangential flow type secondary crushing and rubbing device according to claim 2, characterized in that, the second moving knife assembly (3) includes a second rotating shaft (31). A plurality of moving knife groups (22) are arranged horizontally and at intervals on the second rotating shaft (31). The second fixed knife assembly (5) includes two rows of fixed knife groups (41). The cutting edges of the two rows of fixed knife groups (41) are in opposite directions. The moving knife blades (221) of the moving knife group (22) cooperate with the fixed knife blades (411) on the fixed knife group (41) to perform intermittent cutting.

4. A tangential flow type secondary crushing and rubbing device according to claim 3, characterized in that, the transmission system (6) includes a driven wheel (61) and a belt assembly (62). The belt wheels of the belt assembly (62) are respectively connected to one ends of the first rotating shaft (21) and the second rotating shaft (31). The driven wheel (61) is connected to the other end of the second rotating shaft (31). Both the first rotating shaft (21) and the second rotating shaft (31) are rotatably connected to the connecting housing (1). The driven wheel (61) drives the second rotating shaft (31) to rotate, driving the belt assembly (62) to drive the first rotating shaft (21) to rotate.

5. A tangential flow secondary crushing and rubbing device according to claim 4, characterized in that, a tensioning assembly (63) is connected to the connecting housing (1), and the tensioning assembly (63) is used for tensioning the belt of the belt assembly (62).

6. A tangential flow secondary crushing and rubbing device according to claim 2 or 3, characterized in that, a plurality of moving knife groups (22) are arranged at equal intervals of 60 degrees in the circumferential direction.

7. A tangential flow secondary crushing and rubbing device according to claim 6, characterized in that, among the six moving knife groups (22) in the circumferential direction, the cutting edges of three adjacent ones are in the same direction, and the cutting edges of the other three are in the opposite direction.

8. A tangential flow secondary crushing and rubbing device according to claim 1, characterized in that, a trapezoidal housing (8) is connected to the inner wall of the upper side of the middle part of the connecting housing (1), the material flow channel (7) is formed by the outer wall of the trapezoidal housing (8) and the inner wall of the connecting housing (1), one end of the trapezoidal housing (8) and the inner wall of the connecting housing (1) form a rotating space for the first moving knife assembly (2), and the other end of the trapezoidal housing (8) and the inner wall of the connecting housing (1) form a rotating space for the second moving knife assembly (3).

9. A tangential flow secondary crushing and rubbing device according to claim 8, characterized in that, the gaps between the two side surfaces of the trapezoidal housing (8) and the tips of the moving knife groups (22) are smaller than the gaps required for the material to rotate and pass through.

10. A tangential flow secondary crushing and rubbing device according to claim 1, characterized in that, the inner bottom surface (13) of the connecting housing (1) is smoothly connected, and the height near the first moving knife assembly (2) is lower than the height near the second moving knife assembly (3).

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