Tobacco leaf low-loss conveying device

Abstract

The utility model discloses a low-loss tobacco leaf conveying device which comprises a horizontal conveying mechanism and a lifting conveying mechanism which are connected, tobacco leaves conveyed by the horizontal conveying mechanism are upwards conveyed to the top of the lifting conveying mechanism from the position between an upper conveying belt and a lower conveying belt of the lifting conveying mechanism, and a conveying belt throwing mechanism is arranged at the upper end of the top of the lifting conveying mechanism. The conveying belt throwing mechanism comprises a throwing compression roller, a driving roller, a driven roller and a throwing belt, the throwing compression roller and the driving roller are fixedly installed on a baffle of the rack, the driven roller is installed in a sliding mode, the throwing belt is arranged outside the driving roller and the driven roller in a sleeving mode, the throwing compression roller is located between the first driving roller and the second driving roller and located above the first driving roller, and tobacco leaves are pressed to the throwing belt through the throwing compression roller; and finally, the materials are conveyed to a collecting box through a throwing belt. Tobacco leaves are conveyed to the collecting box through the throwing belt, the fan is prevented from blowing the tobacco leaves to be broken, the integrity of the tobacco leaves is guaranteed, and the quality is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of tobacco leaf harvesting equipment, and particularly relates to a low-loss tobacco leaf conveying device. Background Art

[0002] In the process of tobacco leaf production, the harvesting period and method of tobacco leaves are related to the yield and quality of tobacco leaves. Therefore, scientifically and timely harvesting tobacco leaves is the key to ensuring the quality of tobacco leaves. With the improvement of the existing mechanization level, the tobacco leaf harvesting has gradually been adjusted from manual harvesting to mechanized harvesting. Mechanized harvesting cuts the tobacco leaves through the cutter of the harvester, and then conveys the tobacco leaves into the tobacco leaf collection basket through the conveying device, and then transports them for further processing.

[0003] Chinese Patent with application number 202110041400.7 discloses a conveying system for a tobacco leaf harvester, including a conveying system body. The conveying body includes a fan assembly, a lifting conveying frame, a conveyor belt tensioning frame and a horizontal conveying frame. The fan assembly is located at the top of the conveying system body, and the lifting conveying frame is located at the lower end of the middle and rear part of the fan assembly. The above conveying system uses a fan to blow the tobacco leaves into the tobacco leaf collection box, which is easy to blow the tobacco leaves rotten and affect the quality of the tobacco leaves. Summary of the Invention

[0004] Aiming at the problem that the fan conveying in the prior art is easy to blow the tobacco leaves rotten, the utility model provides a low-loss tobacco leaf conveying device to prevent the tobacco leaves from being blown or rubbed rotten during the conveying process.

[0005] The purpose of the utility model is achieved in the following way:

[0006] A low-loss tobacco leaf conveying device includes a horizontally conveying mechanism and a lifting conveying mechanism connected to each other. The tobacco leaves conveyed by the horizontally conveying mechanism are lifted upward to the top of the lifting conveying mechanism by the lifting conveying mechanism. The lifting conveying mechanism includes a lifting conveying frame, an upper conveyor belt and a lower conveyor belt. Between the two side walls at the top of the lifting conveying frame, there is a bearing connection with a conveyor belt tensioning frame. The bottom of the conveyor belt tensioning frame is suspended, and the conveyor belt tensioning frame rotates around the top bearing. A third tensioning wheel is arranged at the bottom of the conveyor belt tensioning frame. The lifting conveying frame includes a first driving roller, a second driving roller and a first driven roller. The first driving roller is located at the upper right end of the second driving roller. The upper conveyor belt is sleeved outside the first driving roller and the third tensioning wheel. The first driven roller is fixedly arranged between the left and right side walls at the bottom of the lifting conveying frame. The lower conveyor belt is sleeved outside the second driving roller and the first driven roller. A first driving wheel is arranged at the end of the first driving roller, and a second driving wheel is arranged at the end of the second driving roller. The first driving wheel and the second driving wheel are connected by a connecting piece. The tobacco leaves are conveyed upward between the upper conveyor belt and the lower conveyor belt; at the upper end of the top of the lifting conveying mechanism, there is a conveyor belt throwing mechanism. The conveyor belt throwing mechanism includes a throwing pressure roller and a driving roller fixedly installed on the rack baffle, a sliding-mounted driven roller and a throwing belt sleeved outside the driving and driven rollers. The throwing pressure roller is located between the first driving roller and the second driving roller and above the first driving roller. The tobacco leaves conveyed between the upper conveyor belt and the lower conveyor belt of the lifting conveying frame mechanism are pressed by the throwing pressure roller onto the throwing belt and conveyed by the throwing belt to the collection box.

[0007] A first long chute is arranged on the rack baffle. The first long chute extends along the length direction of the throwing belt. The driven roller is slidably arranged in the first long chute through a mounting plate and bolts. The end of the mounting plate is connected to a lead screw. The end of the lead screw is clamped in the card slot of the fixing plate. The fixing plate is fixedly arranged on the rack baffle. Two nuts are threadedly connected to the lead screw. The two nuts are respectively on both sides of the fixing plate.

[0008] One end of the driving roller is provided with a driving wheel, which is connected by a connecting piece to the second driving wheel arranged at the end of the second driving roller. The second driving wheel drives the driving wheel to rotate; one end of the throwing pressure roller is provided with a throwing pressure wheel, which is connected by a connecting piece to the first driving wheel arranged at the end of the first driving roller. The first driving wheel drives the throwing pressure wheel to rotate.

[0009] A first tensioning roller is further arranged above the driving roller. A second long chute is arranged on the rack baffle. The first tensioning roller is slidably connected in the second long chute. A first tensioning wheel is arranged at the end of the first tensioning roller. The connecting piece between the driving wheel and the second driving wheel is tensioned by the first tensioning wheel.

[0010] Flexible materials are arranged on the surfaces of the upper conveyor belt and the lower conveyor belt of the lifting conveying mechanism.

[0011] The flexible material is sponge.

[0012] The conveyor belt tensioning frame includes an upper cross bar, bearing seats, upper vertical support rods, lower vertical support rods, and cross support rods. The upper cross bar is located at the top of the upper vertical support rods. Bearing seats are provided at the left and right ends of the upper cross bar. The lower vertical support rods can be telescoped within the upper vertical support rods. Cross support rods are provided at the upper left and right ends of the upper part of the lower vertical support rods. A tensioning wheel support is provided at the lower end of the lower vertical support rods. A third tensioning wheel is provided between the tensioning wheel supports. An inclination adjusting mechanism is provided at the end of the cross support rod. The inclination adjusting mechanism includes a support block fixedly installed on the side wall of the lifting conveyor frame and an inverted support plate fixedly connected to the cross support rod. A threaded hole is provided on the support plate, and an adjusting bolt is provided in the threaded hole. Nuts are provided on the adjusting bolts on the upper and lower surfaces of the support plate, and the adjusting bolt presses against the support block.

[0013] The support plate is an inverted L-shaped. The vertical plate of the L-shaped support plate fits against the inner wall of the conveyor frame, and the vertical plate of the L-shaped support plate moves up and down along the inside of the side wall of the lifting conveyor frame.

[0014] An upper guard plate is connected to the frame baffle.

[0015] Compared with the prior art, the present utility model replaces the existing fan system by providing a conveyor belt type throwing mechanism at the upper end of the top of the lifting conveyor frame. The tobacco leaves conveyed between the upper conveyor belt and the lower conveyor belt of the lifting conveyor frame are conveyed to the collection box through the throwing belt, preventing the fan from blowing the tobacco leaves into pieces, ensuring the integrity of the tobacco leaves, and improving their quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present utility model.

[0017] Figure 2 is a schematic structural diagram of the conveyor belt throwing mechanism.

[0018] Figure 3 is a schematic structural diagram of the conveyor belt throwing mechanism from another angle.

[0019] Figure 4 is a schematic structural diagram of the tensioning structure of the driven roller of the conveyor belt throwing mechanism.

[0020] Figure 5 is a schematic structural diagram of the conveyor belt tensioning frame.

[0021] Figure 6 is a schematic structural diagram of the inclination adjusting mechanism.

[0022] In the figure, 1 is a conveyor belt throwing mechanism, 100 is a driving wheel, 200 is a driving roller, 300 is a driven roller, 301 is a mounting plate, 302 is a lead screw, 303 is a fixing plate, 400 is a first tensioning roller, 500 is a throwing pressure roller, 600 is an upper guard plate, 700 is a frame baffle, 701 is a first long chute, 702 is a second long chute, 800 is a throwing belt, 2 is a lifting conveyor frame, 21 is a first driving roller, 22 is a second driving roller, 23 is a tensioning wheel, 3 is a conveyor belt tensioning frame, 30 is an upper cross bar, 31 is an upper vertical support rod, 32 is a lower vertical support rod, 33 is a cross support rod, 34 is a tensioning wheel support, 35 is a third tensioning roller, 36 is an inclination adjusting mechanism, 361 is a support block, 362 is a support plate, 363 is an adjusting bolt, 364 is a nut, and 4 is a horizontal conveying mechanism. Detailed implementation mode

[0023] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. After reading the content of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the present invention.

[0024] As Figure 1 shown, a low-loss tobacco leaf conveying device includes a horizontally connected conveying mechanism and a lifting conveying mechanism. The tobacco leaves conveyed by the horizontal conveying mechanism are lifted upward by the lifting conveying mechanism to the top of the lifting conveying mechanism. The lifting conveying mechanism includes a lifting conveyor frame 2, an upper conveyor belt and a lower conveyor belt. Between the two side walls at the top of the lifting conveyor frame 2, a conveyor belt tensioning frame 3 is connected by bearings. The bottom of the conveyor belt tensioning frame 3 is suspended, and the conveyor belt tensioning frame 3 rotates around the top bearings. A third tensioning roller 35 is provided at the bottom of the conveyor belt tensioning frame 3. The lifting conveyor frame 2 includes a first driving roller 21, a second driving roller 22 and a first driven roller (not shown in the figure). The first driving roller 21 is located at the upper right end of the second driving roller 22. An upper conveyor belt is sleeved outside the first driving roller 21 and the third tensioning roller 35. The first driven roller is fixedly arranged between the left and right side walls at the bottom of the lifting conveyor frame 2. A lower conveyor belt is sleeved outside the second driving roller 22 and the first driven roller. A first driving wheel is provided at the end of the first driving roller 21, and a second driving wheel is provided at the end of the second driving roller 22. The first driving wheel and the second driving wheel are connected by a connecting piece. The tobacco leaves are conveyed upward between the upper conveyor belt and the lower conveyor belt; As Figure 2 、 Figure 3As shown in the figure, a conveyor belt throwing mechanism 1 is provided at the upper end of the top of the lifting and conveying mechanism. The conveyor belt throwing mechanism 1 includes a throwing pressure roller 500 and a driving roller 200 fixedly installed on the frame baffle 700, a driven roller 300 slidably installed, and a throwing belt 800 sleeved outside the driving and driven rollers. The throwing pressure roller 500 is located between the first driving roller 21 and the second driving roller 22, and above the first driving roller 21. The tobacco leaves conveyed between the upper conveyor belt and the lower conveyor belt of the lifting and conveying mechanism are pressed by the throwing pressure roller 500 onto the throwing belt 800 and conveyed to the collection box through the throwing belt 800.

[0025] A conveyor belt type throwing mechanism 1 is provided at the upper end of the top of the lifting and conveying frame 2 to replace the existing fan system. The tobacco leaves conveyed between the upper conveyor belt and the lower conveyor belt of the lifting and conveying mechanism are conveyed to the collection box through the throwing belt, preventing the fan from blowing the tobacco leaves to pieces, ensuring the integrity of the tobacco leaves, and improving their quality.

[0026] As Figure 4 , the slidably installed driven roller 300 of the conveyor belt throwing mechanism 1 specifically refers to: a first long chute 701 is provided on the frame baffle 700, the first long chute 701 extends along the length direction of the throwing belt 800, the driven roller 300 is slidably arranged in the first long chute 701 through a mounting plate 301 and a first bolt 304, the end of the mounting plate 301 is connected to a lead screw 302, the end of the lead screw 302 is clamped in the card slot of a fixing plate 303, the fixing plate 303 is fixedly arranged on the frame baffle 700, and two nuts are threadedly connected to the lead screw 302, and the two nuts are respectively on both sides of the fixing plate 303. By adjusting the positions of the nuts on the lead screw 302, the mounting plate 301 is adjusted to drive the driven roller 300 to slide along the first long chute 701, so as to adapt to the throwing belts 800 of different lengths.

[0027] Furthermore, a driving wheel is provided at one end of the driving roller 200 and is connected to a second driving wheel provided at the end of the second driving roller 22 through a connecting member, and the second driving wheel drives the driving wheel to rotate; a throwing pressure wheel is provided at one end of the throwing pressure roller 500 and is connected to a first driving wheel provided at the end of the first driving roller 21 through a connecting member, and the first driving wheel drives the throwing pressure wheel to rotate.

[0028] Even further, a power wheel 100 is fixedly arranged on the frame, a tensioning wheel 23 is slidably arranged, the power wheel 100, the first driving wheel, and the tensioning wheel 23 are connected through a connecting member, and a connecting member is connected to the outside of the second driving wheel. The presence of the tensioning wheel 23 can be used to adjust the tension degree of the connecting member. The power wheel 100 provides power for the first driving wheel and the second driving wheel to ensure the synchronous movement of the upper conveyor belt and the lower conveyor belt. The power wheel 100 provides power for the throwing pressure roller 500 through the first driving wheel, and the power wheel 100 provides power for the driving roller 200 through the second driving wheel.

[0029] Further, a first tensioning roller 400 is also provided above the driving roller 200. A second long chute 702 is provided on the frame baffle 700. The first tensioning roller 400 is slidably connected in the second long chute 702. A first tensioning wheel is provided at the end of the first tensioning roller 400. The connecting member between the driving wheel and the second driving wheel is tensioned by the first tensioning wheel.

[0030] In the present utility model, the driving wheel, the throwing and pressing wheel, the first driving wheel, the second driving wheel, and the first tensioning wheel mentioned can be either belt pulleys or sprocket wheels, and the corresponding connecting member is a belt or a chain.

[0031] Flexible materials are provided on the surfaces of the upper conveyor belt and the lower conveyor belt of the lifting and conveying mechanism. The flexible material is preferably sponge. When the tobacco leaves are conveyed by the lifting and conveying mechanism, they pass through the gap between the upper conveyor belt and the lower conveyor belt. By providing flexible materials on the surfaces of the upper conveyor belt and the lower conveyor belt, replacing the multiple hook-shaped structures provided on the conveyor belt body in the prior art with the application number 202110041400.7, the integrity of the tobacco leaves can be effectively protected from being damaged.

[0032] As Figure 5 shown, the conveyor belt tensioning frame 3 includes an upper cross bar 30, bearing seats, upper vertical support rods 31, lower vertical support rods 32, and cross bars 33. The upper cross bar 30 is located at the top of the upper vertical support rods 31. Bearing seats are provided at the left and right ends of the upper cross bar 30. The lower vertical support rods 32 can be telescoped in the upper vertical support rods 31. Cross bars 33 are provided at the upper left and right ends of the lower vertical support rods 32. A tensioning wheel support 34 is provided at the lower end of the lower vertical support rods 32. A third tensioning wheel 35 is provided between the tensioning wheel supports 34. An inclination adjustment mechanism 36 is provided at the end of the cross bar 33. See Figure 6 , the inclination adjustment mechanism 36 includes a support block 361 fixedly installed on the side wall of the lifting and conveying frame and an inverted support plate 362 fixedly connected to the cross bar 33. A threaded hole is provided on the support plate 362. An adjustment bolt 363 is provided in the threaded hole. Nuts 364 are provided on the adjustment bolts 363 on the upper and lower surfaces of the support plate 362. The adjustment bolt 363 abuts against the support block 361.

[0033] The support plate 362 is an inverted L-shaped. The vertical plate of the L-shaped support plate fits against the inner wall of the conveying frame, and the vertical plate of the L-shaped support plate moves up and down along the inside of the side wall of the lifting and conveying frame.

[0034] By adjusting the gap between the support plate 362 and the support block 361 through the adjustment bolt 363, the gap between the upper conveyor belt and the lower conveyor belt can be adjusted, ensuring that the tobacco leaves pass smoothly between the upper conveyor belt and the lower conveyor belt, reducing the rubbing damage of the tobacco leaves, and improving the quality of the tobacco leaves. The weights of the upper conveyor belt and the conveyor belt tensioning frame 3 are transmitted to the lifting and conveying frame through the cross bar 33, the support plate 362, and the adjustment bolt 363, further reducing the damage to the tobacco leaves.

[0035] Further, an upper guard plate 600 is connected to the rack baffle 700 to prevent the tobacco leaves from flying out above the rack baffle 700.

[0036] For other matters not covered herein, refer to the Chinese patents with the application numbers 202110041400.7 and 201720349861.X.

[0037] The above are only the preferred embodiments of the present utility model. It should be noted that for those skilled in the art, without departing from the overall concept of the present utility model, several changes and improvements can still be made, and these should also be regarded as the protection scope of the present utility model.

Claims

1. A low-loss tobacco leaf conveying device, comprising a horizontally conveying mechanism and a lifting conveying mechanism connected to each other. The tobacco leaves conveyed by the horizontally conveying mechanism are lifted upward by the lifting conveying mechanism to the top of the lifting conveying mechanism. The lifting conveying mechanism includes a lifting conveying frame (2), an upper conveyor belt and a lower conveyor belt. A conveyor belt tensioning frame (3) is connected by bearings between the two side walls at the top of the lifting conveying frame (2). The bottom of the conveyor belt tensioning frame (3) is suspended, and the conveyor belt tensioning frame (3) rotates around the top bearing. A third tensioning wheel is arranged at the bottom of the conveyor belt tensioning frame (3). The lifting conveying frame (2) includes a first driving roller, a second driving roller and a first driven roller. The first driving roller is located at the upper right end of the second driving roller. The upper conveyor belt is sleeved outside the first driving roller and the third tensioning wheel. The first driven roller is fixedly arranged between the left and right side walls at the bottom of the lifting conveying frame (2). The lower conveyor belt is sleeved outside the second driving roller and the first driven roller. A first driving wheel is arranged at the end of the first driving roller, and a second driving wheel is arranged at the end of the second driving roller. The first driving wheel and the second driving wheel are connected by a connecting piece. The tobacco leaves are conveyed upward between the upper conveyor belt and the lower conveyor belt; characterized in that: At the upper end of the top of the lifting and conveying mechanism, a conveyor belt throwing mechanism (1) is provided. The conveyor belt throwing mechanism (1) includes a throwing pressure roller (500) and a driving roller (200) fixedly installed on the frame baffle (700), a driven roller (300) slidably installed, and a throwing belt (800) sleeved outside the driving and driven rollers. The throwing pressure roller (500) is located between the first driving roller and the second driving roller, and above the first driving roller. The tobacco leaves conveyed between the upper conveyor belt and the lower conveyor belt of the lifting and conveying frame mechanism are pressed down by the throwing pressure roller (500) onto the throwing belt (800) and conveyed to the collection box through the throwing belt (800).

2. The tobacco leaf low-loss conveying device according to claim 1, wherein: A first long chute (701) is provided on the frame baffle (700). The first long chute (701) extends along the length direction of the throwing belt (800). The driven roller (300) is slidably arranged in the first long chute (701) through a mounting plate (301) and a first bolt (304). The end of the mounting plate (301) is connected to a lead screw (302). The end of the lead screw (302) is clamped in the card slot of a fixing plate (303). The fixing plate (303) is fixedly arranged on the frame baffle (700). Two nuts are threadedly connected to the lead screw (302), and the two nuts are respectively on both sides of the fixing plate (303).

3. The low-loss tobacco leaf conveying device according to claim 1, characterized in that: One end of the driving roller (200) is provided with a driving wheel, which is connected to a second driving wheel arranged at the end of the second driving roller through a connecting member. The second driving wheel drives the driving wheel to rotate; one end of the throwing pressure roller (500) is provided with a throwing pressure wheel, which is connected to a first driving wheel arranged at the end of the first driving roller through a connecting member. The first driving wheel drives the throwing pressure wheel to rotate.

4. The tobacco leaf low-loss conveying device according to claim 3, wherein: A first tensioning roller (400) is further provided above the driving roller (200). A second long chute (702) is provided on the frame baffle (700). The first tensioning roller (400) is slidably connected in the second long chute (702). A first tensioning wheel is arranged at the end of the first tensioning roller (400). The connecting member between the driving wheel and the second driving wheel is tensioned through the first tensioning wheel.

5. The tobacco leaf low-loss conveying device according to claim 1, wherein: Flexible materials are provided on the surfaces of the upper conveyor belt and the lower conveyor belt of the lifting and conveying mechanism.

6. The tobacco leaf low-loss conveying device according to claim 5, characterized in that: The flexible material is sponge.

7. The tobacco leaf low-loss conveying device according to claim 1, wherein: The conveyor belt tensioning frame (3) includes an upper cross bar, a bearing seat, an upper vertical support rod, a lower vertical support rod, and a cross bar. The upper cross bar is located at the top of the upper vertical support rod. Bearing seats are arranged at the left and right ends of the upper cross bar. The lower vertical support rod can be telescoped in the upper vertical support rod. Horizontal bars are arranged at the upper left and right ends of the upper part of the lower vertical support rod. A tensioning wheel support seat is arranged at the lower end of the lower vertical support rod. A third tensioning wheel is arranged between the tensioning wheel support seats. An inclination adjusting mechanism is arranged at the end of the cross bar. The inclination adjusting mechanism includes a support block (361) fixedly installed on the side wall of the lifting and conveying frame and an inverted support plate (362) fixedly connected to the cross bar. A threaded hole is provided on the support plate (362). An adjusting bolt (363) is arranged in the threaded hole. Nuts (364) are arranged on the adjusting bolts (363) on the upper and lower surfaces of the support plate (362). The adjusting bolt (363) abuts against the support block (361).

8. The tobacco leaf low-loss conveying device according to claim 7, wherein: The support plate (362) is an inverted L shape. The vertical plate of the L-shaped support plate fits against the inner wall of the conveying frame. The vertical plate of the L-shaped support plate moves up and down along the inside of the side wall of the lifting and conveying frame.

9. The tobacco leaf low-loss conveying device according to claim 1, wherein: The upper guard plate (600) is connected to the frame baffle (700).

Images