A segmented drum sieve mechanical structure

Abstract

The present invention relates to the technical field of screening structures. More specifically, it relates to a segmented drum screen mechanical structure, which includes a support device. The support device includes a support frame, fixed legs, and lifting legs. The fixed legs are hinged to the support frame, and the telescopic end of the lifting legs is movably connected to the support frame and controls the support frame to swing relative to the fixed legs; a sieve drum, the sieve drum is a segmented sieve drum, the sieve drum is rotatably arranged on the support frame, and the feeding direction of the sieve drum is parallel to the inclination direction of the support frame; a feeding cylinder, the feeding cylinder is fixedly arranged on the support frame, the feeding cylinder and the lifting legs are located at the same end of the support frame, and the feeding cylinder is in communication with the sieve drum; a first driving component, the first driving component is arranged on the support frame, and the first driving component is used to drive the sieve drum to rotate. The segmented drum screen mechanical structure of the present invention can improve the control range of the screening time of the drum screen, so as to better balance the efficiency required for coarse screening and the accuracy required for fine screening.

Description

Technical Field

[0001] The present invention relates to the technical field of screening structures, and in particular to a segmented drum screen mechanical structure. Background Art

[0002] Before and after the drying treatment of domestic waste, coarse screening and fine screening are required respectively. Currently, a drum screen is usually used for screening. A drum screen is a common screening device, mainly composed of a screen cylinder, a driving device, a speed reducer, a supporting device, etc. Its principle is to add the material to be screened into the screen cylinder. As the screen cylinder rotates, the material continuously rolls, flips and vibrates on the screen, so that particles of different sizes pass through different apertures of the screen to complete the screening process of the material.

[0003] Among them, the purpose of coarse screening is to conduct primary screening first to remove coarse impurities in the material, thereby reducing the loss in subsequent process treatment; while the purpose of fine screening is to conduct secondary screening on the material after process treatment to achieve fine screening between materials. In view of the different purposes of coarse screening and fine screening, usually, the time of coarse screening is shorter and the time of fine screening is longer to balance the screening efficiency of coarse screening and the screening accuracy of fine screening. In order to control the screening time of coarse screening and fine screening, one of the processing methods in the prior art is to change the rotation speed of the screen cylinder. That is, when conducting coarse screening, the rotation speed of the screen cylinder is faster, and by increasing the conveying process of the material during screening, the screening time is shortened to improve the screening efficiency; while when conducting fine screening, the rotation speed of the screen cylinder is slower, and by reducing the conveying process of the material during screening, the screening time is extended to improve the screening accuracy.

[0004] However, only controlling the screening time of coarse screening and fine screening by changing the rotation speed of the screen cylinder will result in a small control range of the screening time, making it difficult to balance the efficiency required for coarse screening and the accuracy required for fine screening. Summary of the Invention

[0005] In order to increase the control range of the screening time of the drum screen, so as to better balance the efficiency required for coarse screening and the accuracy required for fine screening, the present application provides a segmented drum screen mechanical structure.

[0006] The segmented drum screen mechanical structure provided by the present invention adopts the following technical solutions:

[0007] A segmented drum screen mechanical structure, comprising:

[0008] A supporting device, the supporting device includes a support frame, a fixed leg and a lifting leg. The fixed leg is hinged to the support frame and the hinge axis is a horizontal line. The lifting leg has a telescopic end, and the telescopic end of the lifting leg is movably connected to the support frame. The lifting leg controls the support frame to swing relative to the fixed leg;

[0009] A sieve cylinder, the sieve cylinder being a segmented sieve cylinder, the sieve cylinder being rotatably arranged on the support frame, and the feeding direction of the sieve cylinder being parallel to the inclination direction of the support frame;

[0010] A feeding cylinder, the feeding cylinder being fixedly arranged on the support frame, the feeding cylinder and the lifting leg being located at the same end of the support frame, and the feeding cylinder being in communication with the sieve cylinder;

[0011] A first driving assembly, the first driving assembly being arranged on the support frame, and the first driving assembly being used to drive the sieve cylinder to rotate.

[0012] Preferably, the feeding cylinder includes a fixed section and a movable section, the fixed section being fixedly arranged on the support frame, one end of the fixed section extending into the sieve cylinder, the movable section being telescopically connected to the inner end of the fixed section, a counterweight being arranged at one end in the extending direction of the movable section and a spring being connected to one end in the retracting direction.

[0013] Preferably, a locking rod is threadedly connected to the movable section, and the inner end of the locking rod is used to abut against the fixed section.

[0014] Preferably, a railing is arranged at the inner end of the fixed section of the feeding cylinder.

[0015] Preferably, it further includes a scraper and a second driving assembly, the scraper being rotatably arranged in the sieve cylinder, and the second driving assembly being arranged on the support frame and used to drive the scraper to rotate.

[0016] Preferably, the sieve cylinder includes a first sieve cylinder, a second sieve cylinder and a third sieve cylinder, the first sieve cylinder, the second sieve cylinder and the third sieve cylinder being rotatably arranged on the support frame in sequence along the feeding direction, the first sieve cylinder, the second sieve cylinder and the third sieve cylinder all having sieve holes, the sieve holes of the first sieve cylinder and the second sieve cylinder both being honeycomb holes, the sieve holes of the third sieve cylinder being round holes, the first sieve cylinder and the second sieve cylinder rotating synchronously, the third sieve cylinder rotating independently, and the rotation speeds of the first sieve cylinder and the second sieve cylinder being greater than the rotation speed of the third sieve cylinder.

[0017] Preferably, the first driving assembly includes a first motor, a second motor, a first runner, a second runner, a third runner, a first rotating shaft and a second rotating shaft, the first runner and the second runner both being rotatably arranged on the support frame through the first rotating shaft, the third runner being rotatably arranged on the support frame through the second rotating shaft, the first motor and the second motor being fixedly arranged on the support frame and respectively used to drive the first rotating shaft and the second rotating shaft to rotate, and the circumferential surfaces of the first runner, the second runner and the third runner respectively abutting against the circumferential surfaces of the first sieve cylinder, the second sieve cylinder and the third sieve cylinder.

[0018] Preferably, the second driving assembly includes a third motor and a third rotating shaft. The third rotating shaft is rotatably arranged on the support frame. The third motor is fixedly arranged on the support frame and is used to drive the third rotating shaft to rotate. The scraper is fixedly arranged on the circumferential surface of the third rotating shaft.

[0019] Preferably, one end of the third rotating shaft extends into the feeding cylinder and is rotatably connected to the railing. A dredging rod is arranged on the circumferential surface of the end of the third rotating shaft extending into the feeding cylinder.

[0020] Preferably, the support frame is provided with an outer cover. An arc-shaped enclosing plate is arranged on the inner top surface of the outer cover. The sieve cylinder is arranged in the outer cover and is in clearance fit with the inner wall of the arc-shaped enclosing plate. A brush is arranged on the inner wall of the arc-shaped enclosing plate.

[0021] The beneficial effects of the present invention are as follows:

[0022] 1. In the segmented drum sieve mechanical structure of the present invention, in addition to being able to control the screening time of the coarse screening and the fine screening respectively by controlling the rotation speed of the sieve cylinder, it is also possible to control the screening time of the coarse screening and the fine screening respectively by controlling the inclination angle of the sieve cylinder. That is, when performing coarse screening, the inclination angle of the sieve cylinder can be increased to accelerate the conveying speed of the material in the sieve cylinder, thereby shortening the screening time of the coarse screening. When performing fine screening, the inclination angle of the sieve cylinder can be decreased to slow down the conveying speed of the material in the sieve cylinder, thereby extending the screening time of the fine screening. Therefore, by combining the two control methods of controlling the rotation speed of the sieve cylinder and controlling the inclination angle of the sieve cylinder, the control range of the screening time of the drum sieve can be improved, so as to better balance the efficiency required for coarse screening and the accuracy required for fine screening.

[0023] 2. In the segmented drum sieve mechanical structure of the present invention, when the support frame and the sieve cylinder are inclined, the movable section of the feeding cylinder will reach equilibrium under the action of the gravity of its own weight, the gravity of the counterweight, the supporting force of the fixed end, and the elastic force of the spring, and stay at a position at the inner end of the fixed section. After that, when the inclination angle of the sieve cylinder is increased, the movable section will extend relative to the fixed section, making the length of the feeding cylinder longer, thereby shortening the conveying distance of the material in the sieve cylinder and achieving the effect of further shortening the screening time. When the inclination angle of the sieve cylinder is decreased, the movable section will retract relative to the fixed section, making the length of the feeding cylinder shorter, thereby extending the conveying distance of the material in the sieve cylinder and achieving the effect of further extending the screening time. Therefore, on the basis of combining the two control methods of controlling the rotation speed of the sieve cylinder and controlling the inclination angle of the sieve cylinder, further enabling the feeding cylinder to extend with the upward swing of the sieve cylinder and shorten with the downward swing of the sieve cylinder can further improve the control range of the screening time of the drum sieve, so as to better balance the efficiency required for coarse screening and the accuracy required for fine screening.

[0024] 3. By using a scraper and a brush, the sieve holes of the sieve drum can be dredged during the screening process, thus achieving an anti-blocking effect. Moreover, one end of the third rotating shaft for driving the scraper to rotate extends into the feed cylinder and is provided with a dredging rod, so that the third rotating shaft can also drive the dredging rod to dredge the feed cylinder, facilitating feeding. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is the overall structure diagram of the segmented drum sieve mechanical structure in the embodiment of the present application;

[0026] Figure 2 is the side view of the outer cover in the embodiment of the present application;

[0027] Figure 3 is the structure diagram of the segmented drum sieve mechanical structure after removing the outer cover in the embodiment of the present application;

[0028] Figure 4 is the internal structure diagram of the sieve drum of the segmented drum sieve mechanical structure in the embodiment of the present application;

[0029] Figure 5 is the structure diagram of one end of the third rotating shaft in the embodiment of the present application;

[0030] Description of the reference numerals: 1, support frame; 11, fixed support leg; 12, lifting support leg; 13, movable groove; 14, mounting disc; 15, mounting ring; 21, first sieve drum; 211, annular groove; 22, second sieve drum; 23, third sieve drum; 3, feed cylinder; 31, fixed section; 311, railing; 32, movable section; 321, counterweight; 322, spring; 41, first motor; 42, second motor; 43, first runner; 44, second runner; 45, third runner; 5, scraper; 61, third motor; 62, third rotating shaft; 63, dredging rod; 7, outer cover; 71, arc-shaped enclosing plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] The following will further illustrate the present invention in conjunction with the attached Figures 1-5 drawings and embodiments.

[0032] This embodiment discloses a segmented drum sieve mechanical structure.

[0033] Refer to Figure 1 and Figure 3, the mechanical structure of the sectional drum screen includes a support device, a screen cylinder, a feed cylinder 3 and a first drive assembly. Among them, the support device includes a support frame 1, fixed legs 11 and lifting legs 12. The number of fixed legs 11 is two. The two fixed legs 11 are hinged to one end of the support frame 1 in the length direction, and the hinge axis is a horizontal line. The lifting legs 12 are also provided with two. The tops of the two lifting legs 12 both have telescopic ends. The telescopic ends of the lifting legs 12 are movably connected to the other end of the support frame 1 in the length direction. Specifically, a round block is fixedly arranged at the telescopic end of the lifting leg 12, and a rectangular movable groove 13 is opened on the side wall of the support frame. The telescopic end of the lifting leg 12 is movably arranged in the movable groove 13 through the round block to realize the movable connection with the support frame 1. By lifting the telescopic end of the lifting leg 12, the lifting leg 12 is used to control the support frame 1 to swing up and down relative to the fixed leg 11. In this embodiment, the lifting leg 12 is an oil cylinder. In other embodiments, the lifting leg 12 can also be other common lifting mechanisms such as a screw mechanism.

[0034] Refer to Figure 3 , the screen cylinder is a cylinder. Both ends of the screen cylinder are open. A plurality of screen holes are opened on the circumferential surface of the screen cylinder along its own axis direction. Installation discs 14 are respectively installed at both ends of the support frame 1 in the length direction. Both ends of the screen cylinder are rotatably connected to the two installation discs 14 coaxially, so that the screen cylinder is rotatably arranged on the support frame 1, and the feeding direction of the screen cylinder is parallel to the inclination direction of the support frame 1. Correspondingly, a blanking port for the material in the screen cylinder to fall is opened on the support frame 1.

[0035] Refer to Figure 3 , the feed cylinder 3 is a cylinder. Both ends of the feed cylinder 3 are open. The feed cylinder 3 is fixedly arranged at one end of the support frame 1 in the length direction, and the feed cylinder 3 and the lifting leg 12 are located at the same end of the support frame 1. Further, a round hole is opened at the center of the installation disc 14 at the same end as the feed cylinder 3. The feed cylinder 3 is communicated with the screen cylinder through this round hole, so that the material can enter the screen cylinder through the feed cylinder 3. In addition, the first drive assembly is arranged on the support frame 1, and the first drive assembly is used to drive the screen cylinder to rotate.

[0036] The working process of the drum screen mechanical structure based on the above design is as follows: First, adjust the driving speed of the first driving component and the inclination angle of the support frame 1. Then, put the material into the screen cylinder through the feeding cylinder 3. Through the inclination and rotation of the screen cylinder, the material is continuously conveyed forward and screened and discharged. During this working process, in addition to being able to control the screening time of the coarse screening and fine screening respectively by controlling the rotation speed of the screen cylinder, it is also possible to control the screening time of the coarse screening and fine screening respectively by controlling the inclination angle of the screen cylinder. That is, when performing coarse screening, the inclination angle of the screen cylinder can be increased to accelerate the conveying speed of the material in the screen cylinder, thereby shortening the screening time of the coarse screening. When performing fine screening, the inclination angle of the screen cylinder can be reduced to slow down the conveying speed of the material in the screen cylinder, thereby extending the screening time of the fine screening. Therefore, by combining the two control methods of controlling the rotation speed of the screen cylinder and the inclination angle of the screen cylinder, the present invention can improve the control range of the screening time of the drum screen, so as to better balance the efficiency required for coarse screening and the accuracy required for fine screening.

[0037] Referring to Figure 3 and Figure 4 , the feeding cylinder 3 includes a fixed section 31 and a movable section 32. The fixed section 31 is fixedly arranged on the support frame 1. One end of the fixed section 31 extends into the screen cylinder, and the axis of the inner end of the fixed end is collinear with the axis of the screen cylinder. The movable section 32 is telescopically connected to the inner end of the fixed section 31. Specifically, the inner diameter of the movable section 32 is equal to the outer diameter of the fixed section 31, and the movable section 32 is telescopically connected by being movably sleeved on the fixed section 31. Further, a counterweight 321 is arranged at one end of the movable section 32 in the extending direction, and a spring 322 is fixedly connected between the end of the movable section 32 in the retracting direction and the mounting disc 14. Through the above settings, when the support frame 1 and the screen cylinder are inclined, the movable section 32 of the feeding cylinder 3 will reach equilibrium under the action of the gravity of its own weight, the gravity of the counterweight 321, the supporting force of the fixed end, and the elastic force of the spring 322, and stay at a position at the inner end of the fixed section 31. Then, when the inclination angle of the screen cylinder is increased, the movable section 32 slides downward and stretches the spring 322, and the movable section 32 will extend relative to the fixed section 31, making the length of the feeding cylinder 3 longer, thereby shortening the conveying distance of the material in the screen cylinder and achieving the effect of further shortening the screening time. When the inclination angle of the screen cylinder is reduced, the spring 322 pulls the movable section 32 to slide upward, and the movable section 32 will retract relative to the fixed section 31, making the length of the feeding cylinder 3 shorter, thereby extending the conveying distance of the material in the screen cylinder and achieving the effect of further extending the screening time. Therefore, on the basis of combining the two control methods of controlling the rotation speed of the screen cylinder and the inclination angle of the screen cylinder, further enabling the feeding cylinder 3 to elongate with the upward swing of the screen cylinder and shorten with the downward swing of the screen cylinder can further improve the control range of the screening time of the drum screen, so as to better balance the efficiency required for coarse screening and the accuracy required for fine screening.

[0038] In addition, a locking rod is threadedly connected to the bottom of the movable section 32. The inner end of the locking rod is used to abut against the fixed section 31. The purpose of setting the locking rod is as follows: after adjusting the inclination angle of the sieve cylinder and automatically adjusting the length of the feed cylinder 3, the locking rod is used to lock the movable section 32 and the fixed section 31 of the feed cylinder 3 to ensure the relative stability of the movable section 32 and the fixed section 31 of the feed cylinder 3 during the feeding process. Moreover, for people to operate the locking rod, an easy-open door is also provided on the mounting disc 14 at the same end as the feed cylinder 3. The locking rod can be conveniently operated by opening the easy-open door. It should be noted that the easy-open door is hinged to the mounting disc 14 at its top. When the staff needs to open the easy-open door, it can be opened by pulling it outwards, which has the effect of being convenient to open and disassemble. Further, the size of the easy-open door can be designed according to the actual situation and actual needs to be a size that allows the staff to enter, so as to facilitate the staff to enter the sieve cylinder for maintenance.

[0039] Refer to Figure 3 , the sieve cylinder is a segmented sieve cylinder, which includes a first sieve cylinder 21, a second sieve cylinder 22 and a third sieve cylinder 23. Correspondingly, three discharge openings are provided in the discharge opening of the support frame 1. Two mounting rings 15 are also provided on the support frame 1. The two mounting rings 15 are located between the two mounting discs 14. The axis of the mounting ring 15 is collinear with the axis of the mounting disc 14. The first sieve cylinder 21 is rotatably arranged between one mounting disc 14 and one mounting ring 15. The third sieve cylinder 23 is rotatably arranged between the other mounting disc 14 and the other mounting ring 15. The second sieve cylinder 22 is rotatably arranged between the two mounting rings 15, so that the first sieve cylinder 21, the second sieve cylinder 22 and the third sieve cylinder 23 are sequentially rotatably arranged on the support frame 1 along the feeding direction. Further, the first sieve cylinder 21, the second sieve cylinder 22 and the third sieve cylinder 23 all have sieve holes. The sieve holes of the first sieve cylinder 21 and the second sieve cylinder 22 are both honeycomb holes. The sieve holes of the third sieve cylinder 23 are round holes. The first sieve cylinder 21 and the second sieve cylinder 22 rotate synchronously. The third sieve cylinder 23 rotates independently. The rotation speeds of the first sieve cylinder 21 and the second sieve cylinder 22 are greater than the rotation speed of the third sieve cylinder 23. Compared with the single-segment roller sieve, the segmented drum sieve has the following advantages: improving the screening range, because the segmented drum sieve can divide the screening range into multiple segments, making the screening range larger, thus expanding the product application range; improving the accuracy, since the sieve mesh size of each segment of the segmented drum sieve can be independently selected, which makes the screening accuracy of the roller sieve higher; and being convenient for maintenance, each part of the segmented drum sieve can be quickly replaced, which is more flexible and convenient compared with the single-segment roller sieve.

[0040] Refer to Figure 3, the first driving assembly includes a first motor 41, a second motor 42, a first runner 43, a second runner 44, a third runner 45, a first rotating shaft and a second rotating shaft. Among them, the first runner 43 and the second runner 44 are both rotatably arranged on the support frame 1 through the first rotating shaft, the third runner 45 is rotatably arranged on the support frame 1 through the second rotating shaft, the first motor 41 and the second motor 42 are fixedly arranged at the bottom of the support frame 1 and are respectively used to drive the first rotating shaft and the second rotating shaft to rotate. The circumferential surfaces of the first runner 43, the second runner 44 and the third runner 45 are respectively abutted against the circumferential surfaces of the first sieve cylinder 21, the second sieve cylinder 22 and the third sieve cylinder 23, so as to realize the synchronous rotation of the first sieve cylinder 21 and the second sieve cylinder 22 and the independent rotation of the third sieve cylinder 23. In order to increase the contact area and improve the stability, annular grooves 211 are respectively formed on the circumferential outer walls of the first sieve cylinder 21, the second sieve cylinder 22 and the third sieve cylinder 23 around the axis, and the annular grooves 211 of the first sieve cylinder 21, the second sieve cylinder 22 and the third sieve cylinder 23 are respectively used for the first runner 43, the second runner 44 and the third runner 45 to be embedded. In addition, a synchronous pulley and synchronous belt structure is arranged between the output shaft of the first motor 41 and the first rotating shaft, and between the output shaft of the second motor 42 and the second rotating shaft.

[0041] Referring to Figure 4 , the mechanical structure of the segmented drum sieve further includes a scraper 5 and a second driving assembly. The scraper 5 is rotatably arranged in the three sieve cylinders. The second driving assembly is arranged on the support frame 1 and is used to drive the scraper 5 to rotate. Specifically, the second driving assembly includes a third motor 61 and a third rotating shaft 62. Among them, the third rotating shaft 62 is rotatably arranged on the mounting disc 14 at the same end as the fixed support feet on the support frame 1, and the axis of the third rotating shaft 62 is collinear with the axis of the mounting disc 14. The third motor 61 is also arranged on the support frame 1. The third motor 61 is fixedly arranged on the mounting disc 14 where the third rotating shaft 62 is rotatably arranged. The output shaft of the third motor 61 is coaxially connected to the third rotating shaft 62, and the third motor 61 is used to drive the third rotating shaft 62 to rotate. Further, a plurality of scrapers 5 are provided. The scrapers 5 are fixedly arranged on the circumferential surface of the third rotating shaft 62. The end of the scraper 5 away from the third rotating shaft 62 is used to scrape the materials blocking the sieve holes, so as to achieve the anti-blocking effect. In this embodiment, the rotation speed of the scraper 5 is lower than the rotation speeds of the first sieve cylinder 21, the second sieve cylinder 22 and the third sieve cylinder 23, so that there is a rotation speed difference between the scraper 5 and the three sieve cylinders, so as to better scrape the materials blocking the sieve holes.

[0042] Referring to Figures 1 to 3, the support frame 1 is provided with an outer cover 7. Both ends and the bottom of the outer cover 7 in the length direction are open. The inner top surface of the outer cover 7 is provided with three arc-shaped baffles 71. The three sieve drums are all arranged inside the outer cover 7 and are respectively in clearance fit with the inner walls of the arc-shaped baffles 71, that is, there is a gap between the circumferential outer wall of the sieve drum and the circumferential inner wall of the arc-shaped baffle 71. Further, a brush is provided on the inner wall of the arc-shaped baffle 71. The brush can sweep the materials blocking the sieve holes, and also plays an anti-blocking effect.

[0043] Referring to Figure 4 and Figure 5 , at the inner end of the fixed section 31 of the feed cylinder 3, a railing 311 is fixedly arranged. The railing 311 is fixed in one of the diameter directions of the fixed section 31. The railing 311 divides the inner end opening of the fixed section 31 into upper and lower parts. The railing 311 is used to slow down the feeding speed of the materials and prevent the materials from skipping too many sieve holes due to too fast feeding speed. Further, the end of the third rotating shaft 62 far from the third motor 61 extends into the feed cylinder 3, is rotatably connected to the railing 311 and passes through the railing 311. A dredging rod 63 is arranged on the circumferential surface of the end of the third rotating shaft 62 extending into the feed cylinder 3. Through the above settings, the third rotating shaft 62 can not only drive the scraper 5 to rotate, but also drive the dredging rod 63 to dredge the feed cylinder 3, achieving an anti-blocking effect and facilitating feeding.

[0044] In summary, the usage method of a segmented drum sieve mechanical structure in this embodiment is as follows:

[0045] S1: Adjust the rotation speeds of the first sieve drum 21, the second sieve drum 22, the third sieve drum 23 and the scraper 5;

[0046] S2: Loosen the locking rod;

[0047] S3: Adjust the inclination angles of the first sieve drum 21, the second sieve drum 22 and the third sieve drum 23;

[0048] S4: Tighten the locking rod;

[0049] S5: Feed materials into the first sieve drum 21 through the feed cylinder 3;

[0050] S6: Receive materials below the three discharge openings of the support frame 1.

[0051] The above are all the preferred embodiments of the present invention. The protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape and principle of this application should be covered within the protection scope of this application.

Claims

1. A segmented drum sieve mechanical structure, characterized in that, Comprising: A supporting device, the supporting device includes a support frame (1), a fixed leg (11) and a lifting leg (12), the fixed leg (11) is hinged to the support frame (1) and the hinge axis is a horizontal line, the lifting leg (12) has a telescopic end, the telescopic end of the lifting leg (12) is movably connected to the support frame (1), and the lifting leg (12) controls the support frame (1) to swing relative to the fixed leg (11); A sieve cylinder, the sieve cylinder is a segmented sieve cylinder, the sieve cylinder is rotatably arranged on the support frame (1), and the feeding direction of the sieve cylinder is parallel to the inclination direction of the support frame (1); A feeding cylinder (3), the feeding cylinder (3) is fixedly arranged on the support frame (1), the feeding cylinder (3) and the lifting leg (12) are located at the same end of the support frame (1), and the feeding cylinder (3) is communicated with the sieve cylinder; A first driving assembly, the first driving assembly is arranged on the support frame (1), and the first driving assembly is used to drive the sieve cylinder to rotate; The feeding cylinder (3) includes a fixed section (31) and a movable section (32), the fixed section (31) is fixedly arranged on the support frame (1), one end of the fixed section (31) extends into the sieve cylinder, the movable section (32) is telescopically connected to the inner end of the fixed section (31), a counterweight block (321) is arranged at one end of the movable section (32) in the extending direction, and a spring (322) is connected to one end of the movable section (32) in the retracting direction.

2. The mechanical structure of a segmented drum sieve according to claim 1, characterized in that: The movable section (32) is threadedly connected with a locking rod, and the inner end of the locking rod is used to abut against the fixed section (31).

3. A segmented drum sieve mechanical structure according to claim 1, characterized in that: A railing (311) is arranged at the inner end of the fixed section (31) of the feeding cylinder (3).

4. A segmented drum sieve mechanical structure according to claim 3, characterized in that: It further includes a scraper (5) and a second driving assembly, the scraper (5) is rotatably arranged in the sieve cylinder, and the second driving assembly is arranged on the support frame (1) and used to drive the scraper (5) to rotate.

5. The mechanical structure of a segmented drum sieve according to claim 1, wherein: The sieve cylinder includes a first sieve cylinder (21), a second sieve cylinder (22) and a third sieve cylinder (23), the first sieve cylinder (21), the second sieve cylinder (22) and the third sieve cylinder (23) are sequentially rotatably arranged on the support frame (1) along the feeding direction, the first sieve cylinder (21), the second sieve cylinder (22) and the third sieve cylinder (23) all have sieve holes, the sieve holes of the first sieve cylinder (21) and the second sieve cylinder (22) are both honeycomb holes, the sieve holes of the third sieve cylinder (23) are round holes, the first sieve cylinder (21) and the second sieve cylinder (22) rotate synchronously, the third sieve cylinder (23) rotates independently, and the rotation speeds of the first sieve cylinder (21) and the second sieve cylinder (22) are greater than the rotation speed of the third sieve cylinder (23).

6. The mechanical structure of a segmented drum screen according to claim 5, characterized in that: The first driving assembly includes a first motor (41), a second motor (42), a first runner (43), a second runner (44), a third runner (45), a first rotating shaft and a second rotating shaft. The first runner (43) and the second runner (44) are rotatably arranged on the support frame (1) through the first rotating shaft. The third runner (45) is rotatably arranged on the support frame (1) through the second rotating shaft. The first motor (41) and the second motor (42) are fixedly arranged on the support frame (1) and are respectively used to drive the first rotating shaft and the second rotating shaft to rotate. The circumferential surfaces of the first runner (43), the second runner (44) and the third runner (45) are in one-to-one contact with the circumferential surfaces of the first sieve cylinder (21), the second sieve cylinder (22) and the third sieve cylinder (23).

7. A segmented drum sieve mechanical structure according to claim 4, characterized in that: The second driving assembly includes a third motor (61) and a third rotating shaft (62). The third rotating shaft (62) is rotatably arranged on the support frame (1). The third motor (61) is fixedly arranged on the support frame (1) and is used to drive the third rotating shaft (62) to rotate. The scraper (5) is fixedly arranged on the circumferential surface of the third rotating shaft (62).

8. A segmented drum sieve mechanical structure according to claim 7, characterized in that: One end of the third rotating shaft (62) extends into the feed cylinder (3) and is rotatably connected to the railing (311). A dredging rod (63) is arranged on the circumferential surface of the end of the third rotating shaft (62) extending into the feed cylinder (3).

9. A segmented drum sieve mechanical structure according to claim 1, characterized in that: The support frame (1) is provided with an outer cover (7). An arc-shaped enclosing plate (71) is arranged on the inner top surface of the outer cover (7). The sieve cylinder is arranged in the outer cover (7) and is in clearance fit with the inner wall of the arc-shaped enclosing plate (71). A brush is arranged on the inner wall of the arc-shaped enclosing plate (71).

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