A screw conveyor

Abstract

The present invention belongs to the technical field of screw conveyors, and relates to a screw conveyor. The present invention includes a conveying cylinder, and the conveying cylinder includes a first cylinder body and a second cylinder body; the first cylinder body is fixedly arranged, and the second cylinder body is movably arranged; the diameter and pitch of the first cylinder body and the second cylinder body are the same, and a driving assembly for driving the second cylinder body to move is arranged on the first cylinder body. A feed port is arranged above the right end of the first cylinder body, and a discharge port is arranged on the second cylinder body; a spiral blade is rotatably arranged in the first cylinder body; the pitch of the spiral blade is equal to the pitch of the first cylinder body. When adjusting the distance between the discharge port and the feed port, the second cylinder body is driven to rotate by the driving assembly, and under the action of the first cylinder body, the second cylinder body moves axially at the same time, thereby adjusting the conveying distance. The spiral blade is made to overlap with the first cylinder body, so that when the second cylinder body moves, the second cylinder body avoids contact with the spiral blade, and avoids the friction of the second cylinder body by the residual material particles during the movement.

Description

Technical Field

[0001] The invention belongs to the technical field of screw conveyors and relates to a screw conveyor. Background Art

[0002] The screw conveyor is mainly composed of a screw blade, a screw shaft, a housing, an inlet and outlet, and a drive device. Its working principle is that the rotating screw blade pushes the material to be transported by the screw conveyor. The screw conveyor is a conveying equipment with a simple structure, convenient operation, strong conveying capacity, and long conveying distance. It is widely used in various industries.

[0003] Usually the conveying distance of the screw conveyor is fixed, which is not convenient to adjust according to actual needs. It cannot meet the needs of material transportation in different usage scenarios.

[0004] The patent document with the publication number CN117550296A discloses a screw conveyor that is easy to install. The invention includes a bottom plate and a support frame fixedly installed on the top of the bottom plate, a cylinder fixedly installed inside the support frame, and a spiral conveying blade rotatably installed inside the cylinder. An opening is provided at the bottom of the cylinder, and an arc plate is slidably provided in the opening. The present invention can adjust the conveying stroke of the conveyor by adjusting the position of the arc plate and the discharge pipe to meet the requirements of different conveying strokes, thereby improving the use range of the entire conveyor, and when adjusting the position of the arc plate and the discharge pipe, the arc plate can be separated from the spiral conveying blade attached to it during the entire adjustment process, so that during the movement of the arc plate, it will not be worn by the impurity particles in the material remaining on its surface, so that the inner wall of the arc plate can be protected. However, the invention has the following shortcomings when used: when the arc plate is separated from the spiral conveying blade attached to it, a gap is generated between the arc plate and the cylinder, so that the material particles in the cylinder will fall from the gap.

[0005] In order to solve the above problems, the present invention provides a screw conveyor. Summary of the invention

[0006] In order to solve the problems existing in the background technology, the present invention proposes a screw conveyor.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0008] A screw conveyor comprises a conveying cylinder, wherein the conveying cylinder comprises a first cylinder body and a second cylinder body; the first cylinder body is fixedly arranged, and the second cylinder body is movably arranged; the first cylinder body and the second cylinder body have the same diameter and pitch; a driving assembly for driving the second cylinder body to move is arranged on the first cylinder body;

[0009] A feed port is arranged above the right end of the first cylinder, and a discharge port is arranged on the second cylinder; a spiral blade is rotatably arranged in the first cylinder; a second motor is fixed to the second cylinder, and the second motor is drivingly connected to the spiral blade;

[0010] When the distance between the discharge port and the feed port needs to be adjusted, the second cylinder is driven to rotate by the driving assembly. Under the action of the first cylinder, the second cylinder moves axially at the same time, thereby adjusting the conveying distance.

[0011] Furthermore, the pitch of the spiral blade is equal to the pitch of the first cylinder. In this way, when adjusting the conveying distance, the spiral blade is first overlapped with the first cylinder, that is, the spiral blade is located in the first cylinder, so that when the second cylinder moves, the second cylinder avoids contact with the spiral blade, and avoids the second cylinder from being rubbed by residual material particles during the movement, which has a protective effect on the second cylinder.

[0012] Furthermore, the driving assembly includes a first motor and a guide member; the guide member includes a rib and a first rotating shaft; the first motor is fixed to the left end of the second cylinder, the motor shaft of the first motor is coaxially fixedly connected with the first rotating shaft, and the first rotating shaft is coaxially arranged with the first cylinder; a plurality of ribs are fixed on the first rotating shaft, and the ribs are arranged along the length direction of the first rotating shaft; the left end of the second cylinder is slidably sleeved on the guide member, and the right end of the second cylinder is provided with a matching hole adapted to the guide member. The first motor drives the guide member to rotate, and the guide member drives the second cylinder, and the second cylinder rotates while moving axially along the guide member.

[0013] Furthermore, a feeding mechanism is provided at the feed port; the feeding mechanism comprises a second hopper and a first hopper, the first hopper is fixedly mounted on the first cylinder and is connected to the feed port; the second hopper is elastically movably arranged at the upper end of the first hopper, the second hopper is slidably connected to two baffles, the two baffles block the second hopper when in contact, and the two baffles are separated and the second hopper is opened; a connecting block is elastically slidably connected to the second hopper, and a cam cooperating with the connecting block is rotatably mounted on the first hopper; one end of the baffle extends to the outside of the second hopper, and the baffle and the connecting block are connected by a rotating rod;

[0014] The baffle blocks the second hopper, and materials are added into the second hopper. Under the action of the gravity of the materials, the second hopper moves downward, and the connecting block moves downward and close to the cam. When the cam rotates, it pushes the connecting block to move upward, and the connecting block pushes the baffle to move outward through the rotating rod, the second hopper opens, and the materials in the second hopper fall into the first hopper.

[0015] Furthermore, the first hopper is fixedly connected to a first fixed plate, a guide column is fixedly installed on the first fixed plate, the second hopper is fixedly connected to a second fixed plate, and the second fixed plate is elastically slidably sleeved on the guide column; each guide column is sleeved with a first spring, and the first spring is fixedly connected between the first fixed plate and the second fixed plate.

[0016] Furthermore, a third fixed plate is fixed to the lower end of the second fixed plate, a sliding groove is vertically opened on the upper edge of the third fixed plate, a slider is slidably arranged in the sliding groove, and the slider is fixedly connected to the connecting block; a second spring is arranged in the sliding groove, one end of the second spring is fixedly connected to the slider, and the other end of the second spring is fixedly connected to the end wall of the sliding groove.

[0017] Furthermore, there are two connecting blocks, which are symmetrically arranged on both sides of the second hopper. There are two cams, which correspond to the two connecting blocks one by one, and the cams cooperate with the corresponding connecting blocks; each connecting block is rotatably connected to two rotating rods, and the two rotating rods on the same connecting block are respectively connected to the two baffles.

[0018] Furthermore, the first hopper is rotatably connected to a second rotating shaft; the second motor is a double-shaft motor, one of the motor shafts on the second motor is drivingly connected to the spiral blade; the other motor shaft on the second motor is connected to the second rotating shaft via a first belt drive;

[0019] The cam and the second rotating shaft are connected through a second belt transmission.

[0020] Furthermore, a screw rod is rotatably arranged in the first hopper; the screw rod has a stirring effect on the material in the first hopper to prevent the material from piling up in the first hopper.

[0021] Furthermore, a fixed rod is fixedly connected inside the first hopper, and a spiral rod is rotatably installed on the fixed rod; the fixed rod is fixedly connected to a gear box; the second rotating shaft passes through the gear box and rotates with the gear box; a first bevel gear is coaxially fixedly connected to the second rotating shaft, and the first bevel gear is located inside the gear box; the lower end of the spiral rod extends into the gear box; one end of the spiral rod extending into the gear box is coaxially fixedly connected to a second bevel gear, and the first bevel gear and the second bevel gear are meshed.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The first cylinder and the second cylinder can be rotated to adjust the position of the discharge port, thereby adjusting the conveying distance. During the adjustment process, the conveying cylinder is always in a closed state, which can prevent the material in the conveying cylinder from falling.

[0024] 2. Since the pitch of the spiral blade is equal to the pitch of the first cylinder, when adjusting the conveying distance, the spiral blade is first overlapped with the first cylinder, that is, the spiral blade is located in the first cylinder. In this way, when the second cylinder moves, the second cylinder avoids contact with the spiral blade, avoiding the friction of the residual material particles during the movement of the second cylinder, which has a protective effect on the second cylinder.

[0025] 3. When unloading, the baffle is reciprocated to open the second hopper intermittently, so that the material in the second cylinder flows out intermittently. In this way, when the material is continuously added to the second hopper, the material is prevented from accumulating and clogging in the first hopper. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the state of the present invention when it is at the maximum conveying distance;

[0027] Figure 2 It is a schematic diagram of the state of the present invention when it is at the minimum conveying distance;

[0028] Figure 3 is a cross-sectional view of the conveying cylinder of the present invention when it is at the maximum conveying distance;

[0029] Figure 4 is a schematic diagram of the installation of the first motor in the present invention;

[0030] Figure 5 is an external schematic diagram of the feeding mechanism in the present invention;

[0031] Figure 6 It is a schematic diagram of the connection between the feeding mechanism and the first cylinder in the present invention;

[0032] Figure 7 It is a structural schematic diagram of the second cylinder in the present invention;

[0033] Figure 8 The present invention Figure 7 A magnified view of part A;

[0034] Fig. 9 It is a schematic diagram of the positions of the cam and the connecting block in the present invention;

[0035] Fig.10 It is a schematic diagram of the internal structure of the feeding mechanism in the present invention;

[0036] Fig.11 It is a structural schematic diagram of the guide column in the present invention;

[0037] Fig.12 It is a structural schematic diagram of the gear box in the present invention;

[0038] Fig.13 It is a schematic diagram of the connection between the transfer rod and the connection block in the present invention;

[0039] Fig.14 The present invention Fig.13 A magnified view of part B;

[0040] Fig.15 It is a schematic diagram of the cooperation between the slider and the slide groove in the present invention;

[0041] Fig.16 It is a structural schematic diagram of the spiral rod in the present invention.

[0042] In the figure: 1. first cylinder; 2. second cylinder; 3. supporting leg; 4. matching hole; 5. first motor; 6. first rotating shaft; 7. rib; 8. second motor; 9. spiral blade; 10. first belt; 11. first hopper; 12. gear box; 13. first bevel gear; 14. second bevel gear; 15. spiral rod; 16. fixing rod; 17. second belt; 18. cam; 19. first fixing plate; 20. guide column; 21. first spring; 22. second hopper; 23. slide groove; 24. slider; 25. second spring; 26. connecting block; 27. first gear; 28. second gear; 29. ​​rotating rod; 30. first shaft; 31. baffle; 32. second rotating shaft; 33. discharge port; 34. second fixing plate. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] like Figure 1-Figure 16 A screw conveyor is shown.

[0045] Embodiment 1: The technical solution adopted by the present invention is as follows: A screw conveyor includes a conveying cylinder and a spiral blade 9. The conveying cylinder includes a first cylinder body 1 and a second cylinder body 2, wherein the first cylinder body 1 is fixedly arranged and the second cylinder body 2 is movably arranged. A support leg 3 is fixedly connected to the lower end of the first cylinder body 1, and the support leg 3 is used to support the first cylinder body 1 so that the first cylinder body 1 is at a certain height. The left and right ends of the first cylinder body 1 are both provided with end caps. The diameter and pitch of the first cylinder body 1 and the second cylinder body 2 are the same.

[0046] A spiral blade 9 is coaxially rotated in the first cylinder 1, and the pitch of the spiral blade 9 is the same as that of the first cylinder 1. A second motor 8 is fixedly installed at the right end cover of the first cylinder 1, and the second motor 8 is drivingly connected to the spiral blade 9. A feed port is provided above the right end of the first cylinder 1, and a discharge port 33 is provided below the second cylinder 2. Materials are added into the conveying cylinder through the feed port, and under the action of the spiral blade 9, the materials move to the left along the conveying cylinder and are discharged through the discharge port 33.

[0047] The first cylinder 1 is provided with a driving assembly for driving the second cylinder 2 to move. The driving assembly includes a first motor 5 and a guide. The guide includes a rib 7 and a first rotating shaft 6. The first motor 5 is fixedly mounted on the left end cover of the first cylinder 1, the first rotating shaft 6 and the first motor 5 are coaxially fixedly connected, and the first rotating shaft 6 and the first cylinder 1 are coaxially arranged. A plurality of ribs 7 are fixedly arranged on the circumferential surface of the first rotating shaft 6, and the ribs 7 are arranged along the length direction of the first rotating shaft 6. The length of the second cylinder 2 is greater than that of the first cylinder 1. A mounting plate is fixedly connected to the left end of the second cylinder 2, and the mounting plate is slidably mounted on the guide. A matching hole 4 adapted to the guide is provided on the mounting plate.

[0048] Under the action of the driving assembly, the second cylinder 2 rotates, and at the same time, under the action of the first cylinder 1, the second cylinder 2 moves along the axial direction of the first rotating shaft 6, thereby changing the position of the discharge port 33 and the distance between the feed port and the discharge port 33, thereby achieving the purpose of adjusting the conveying distance.

[0049] Working principle: Figure 1 As shown, initially, the discharge port 33 is located at the left end of the first cylinder 1. At this time, the distance between the discharge port 33 and the feed port is the largest, and the conveying distance is the largest.

[0050] The second motor 8 is started, and the second motor 8 drives the spiral blade 9 to rotate, and materials are added into the conveying cylinder through the feed port. Under the action of the spiral blade 9, the materials move to the left and flow out through the discharge port 33.

[0051] When the conveying distance of the screw conveyor needs to be adjusted, first start the second motor 8 to rotate the spiral blade 9 so that the spiral blade 9 coincides with the inner wall of the first cylinder 1, that is, the spiral gap of the spiral blade 9 coincides with the second cylinder 2 and the spiral blade 9 is located in the first cylinder 1.

[0052] like Figure 1As shown, the discharge port 33 is located at the left end of the first cylinder 1, at which time the conveying distance is the largest, and the left end of the second cylinder 2 extends a certain distance beyond the left end of the first cylinder 1. When the conveying distance needs to be shortened, the first motor 5 is started, the first motor 5 drives the guide member to rotate, and the guide member drives the second cylinder 2 to rotate. Under the action of the first cylinder 1, the second cylinder 2 rotates and moves to the right along the first rotating shaft 6, and then the discharge port 33 moves to the right, so that the distance between the discharge port and the feed port becomes smaller, and the conveying distance becomes smaller.

[0053] like Figure 8 As shown, when the second cylinder 2 moves to the right, the right end of the second cylinder 2 gradually moves away from the right end of the first cylinder 1. When the conveying distance is less than the maximum conveying distance, the right end of the second cylinder 2 extends beyond the right end of the first cylinder 1. Then, when the conveying distance needs to be increased, the first motor 5 is rotated in the opposite direction, and the guide member drives the second cylinder 2 to rotate while the second cylinder 2 moves to the left, and the right end of the second cylinder 2 gradually moves closer to the right end of the first cylinder 1, thereby causing the discharge port 33 to move to the left, increasing the distance between the discharge port 33 and the feed port, and increasing the conveying distance.

[0054] When the second cylinder 2 moves, if the material particles remaining on the inner wall of the second cylinder 2 collide with the spiral blades 9, friction will occur between the inner wall of the second cylinder 2 and the material particles, which will cause serious wear on the inner wall of the second cylinder 2 in the long run, affecting the use. When the second cylinder 2 moves along the first rotating shaft 6, since the spiral blades 9 overlap with the first cylinder 1, the second cylinder 2 will not contact the spiral blades 9 when moving. In this way, the material particles remaining on the second cylinder 2 can be prevented from contacting the spiral blades 9, and the second cylinder 2 can be prevented from being rubbed by the material particles during the movement, which has a protective effect on the inner wall of the second cylinder 2.

[0055] Embodiment 2: A screw conveyor includes a first cylinder 1, a second cylinder 2 and a spiral blade 9. The first cylinder 1 is fixedly arranged, and the second cylinder 2 is movably arranged. The lower end of the first cylinder 1 is fixedly connected to a support leg 3, and the support leg 3 is used to support the first cylinder 1 so that the first cylinder 1 is at a certain height. The left and right ends of the first cylinder 1 are both provided with end covers. The diameter and pitch of the first cylinder 1 and the second cylinder 2 are the same. The second cylinder 2 and the first cylinder 1 cooperate to form a conveying cylinder.

[0056] A spiral blade 9 is coaxially rotated in the first cylinder 1, and the pitch of the spiral blade 9 is the same as that of the first cylinder 1. A second motor 8 is fixedly installed at the right end cover of the first cylinder 1, and the second motor 8 is drivingly connected to the spiral blade 9. A feed port is provided above the right end of the first cylinder 1, and a discharge port 33 is provided below the second cylinder 2. Materials are added into the conveying cylinder through the feed port, and under the action of the spiral blade 9, the materials move to the left along the conveying cylinder and are discharged through the discharge port 33.

[0057] The first cylinder 1 is provided with a driving assembly for driving the second cylinder 2 to move. The driving assembly includes a first motor 5 and a guide. The guide includes a rib 7 and a first rotating shaft 6. The first motor 5 is fixedly mounted on the left end cover of the first cylinder 1, the first rotating shaft 6 and the first motor 5 are coaxially fixedly connected, and the first rotating shaft 6 and the first cylinder 1 are coaxially arranged. A plurality of ribs 7 are fixedly arranged on the circumferential surface of the first rotating shaft 6, and the ribs 7 are arranged along the length direction of the first rotating shaft 6. The length of the second cylinder 2 is greater than that of the first cylinder 1. A mounting plate is fixedly connected to the left end of the second cylinder 2, and the mounting plate is slidably mounted on the guide. A matching hole 4 adapted to the guide is provided on the mounting plate.

[0058] Under the action of the driving assembly, the second cylinder 2 rotates, and at the same time, under the action of the first cylinder 1, the second cylinder 2 moves along the axial direction of the first rotating shaft 6, thereby changing the position of the discharge port 33 and the distance between the feed port and the discharge port 33, thereby achieving the purpose of adjusting the conveying distance.

[0059] A feeding mechanism is provided at the feeding port. The feeding mechanism includes a second hopper 22 and a first hopper 11. The first hopper 11 is fixedly mounted on the first cylinder 1, and the lower end of the first hopper 11 is connected to the feeding port. The second hopper 22 is elastically slidably disposed at the upper end of the first hopper 11. The lower end of the second hopper 22 extends into the first hopper 11.

[0060] Specifically, the first hopper 11 is fixedly connected to a first fixing plate 19, a guide column 20 is fixedly installed on the first fixing plate 19, and the second hopper 22 is fixedly connected to a second fixing plate 34, and the second fixing plate 34 is elastically slidably sleeved on the guide column 20. In this embodiment, there are four guide columns 20, and the four guide columns 20 are respectively arranged at the four corners of the first fixing plate 19. Each guide column 20 is sleeved with a first spring 21, and the first spring 21 is fixedly connected between the first fixing plate 19 and the second fixing plate 34. A stopper is fixedly installed at one end of the guide column 20 away from the first fixing plate 19 to prevent the second hopper 22 from being separated from the guide column 20.

[0061] The second hopper 22 is slidably connected to two baffles 31. When the two baffles 31 are in contact, the second hopper 22 is blocked. When the two baffles 31 are separated, the second hopper 22 is opened. The second hopper 22 is provided with a sliding hole adapted to the baffle 31. One end of the baffle 31 slides through the sliding hole and extends outside the second hopper 22.

[0062] Two connecting blocks 26 are elastically slidably connected to the second hopper 22. The two connecting blocks 26 are symmetrically arranged on both sides of the second hopper 22. Specifically, the second fixing plate 34 is fixedly connected to the third fixing plate, and the third fixing plate is provided with a slide groove 23, and a slider 24 is slidably connected in the slide groove 23, and the slider 24 is fixedly connected to the connecting blocks 26. A second spring 25 is arranged in the slide groove 23, one end of the second spring 25 is fixedly connected to the connecting block 26, and the other end of the second spring 25 is fixedly connected to the end wall of the slide groove 23.

[0063] A rotating rod 29 is connected between one end of the baffle plate 31 extending outside the second hopper 22 and the connecting block 26. When the connecting block 26 slides along the chute 23, the connecting block 26 pushes the baffle plate 31 to slide through the rotating rod 29, and then the second hopper 22 is opened or closed.

[0064] Two second shafts are rotatably connected in each connection block 26, and each second shaft is rotatably connected to a rotating rod 29. The two rotating rods 29 on the same connection block 26 correspond to two baffles 31. One end of the rotating rod 29 away from the second shaft is rotatably connected to the corresponding baffle 31. The baffle 31 is fixedly connected to the first shaft 30, and the rotating rod 29 is rotatably sleeved on the baffle 31.

[0065] On the same connecting block 26, a first gear 27 is coaxially fixedly sleeved on one of the second shaft rods, and a second gear 28 is coaxially fixedly sleeved on the other second shaft rod. The first gear 27 is meshed with the second gear 28. The arrangement of the first gear 27 and the second gear 28 enables the two rotating rods 29 on the same connecting block 26 to keep synchronous movement.

[0066] The first fixed plate 19 is rotatably mounted with a cam 18. There are two cams 18, and the two cams 18 correspond to the two connecting blocks 26 one by one. The cams 18 and the corresponding connecting blocks 26 cooperate. Initially, under the action of the second spring 25, the slider 24 is at the lower end of the slide 23, and the baffle 31 blocks the second hopper 22. Under the action of the first spring 21, the second fixed plate 34 is at the upper end of the guide column 20. Add materials into the second hopper 22. As the materials are gradually added, the second hopper 22 moves downward under the action of the gravity of the materials, and the second fixed plate 34 slides downward along the guide column 20. The connecting block 26 moves downward and approaches the cam 18. When the cam 18 rotates, the protrusion of the cam 18 pushes the connecting block 26 to move upward, and the connecting block 26 pushes the baffle 31 to move outward through the rotating rod 29, and the second hopper 22 opens, and the materials in the second hopper 22 fall into the first hopper 11. When the protrusion of the cam 18 gradually disengages from the connecting block 26, the connecting block 26 moves downward under the action of the second spring 25, and the connecting block 26 drives the baffle 31 to move into the second hopper 22 through the rotating rod 29, so that the baffle 31 blocks the second hopper 22, thereby enabling the second hopper 22 to discharge materials intermittently.

[0067] The cam 18 is connected to the second motor 8 by transmission. Specifically, the first hopper 11 is rotatably connected to the second rotating shaft 32. The second rotating shaft 32 is fixedly sleeved with a second pulley. The second motor 8 is a double-shaft motor, and one of the motor shafts of the second motor 8 is drivingly connected to the spiral blade 9. The other motor shaft of the second motor 8 is fixedly sleeved with a first pulley. The first pulley and the second pulley are connected by a first belt 10.

[0068] The cam 18 is rotatably mounted on the first fixed plate 19 through the third shaft. The first fixed plate 19 is rotatably connected to the third shaft, and the cam 18 is fixedly connected to the third shaft. A third belt pulley is fixedly sleeved on the third shaft, and a fourth belt pulley is sleeved on the second rotating shaft 32. A second belt 17 is transmission-connected between the third belt pulley and the fourth belt pulley.

[0069] When the second motor 8 is working, the second motor 8 drives the second rotating shaft 32 to rotate through the first belt 10 , and the second rotating shaft 32 drives the cam 18 to rotate through the second belt 17 .

[0070] Working principle: Initially, under the action of the second spring 25, the connecting block 26 is at the lower end of the slide slot 23, and the baffle 31 blocks the second hopper 22. The second fixing plate 34 is above the guide column 20. Figure 1 As shown, initially, the discharge port 33 is located at the left end of the first cylinder 1. At this time, the distance between the discharge port 33 and the feed port is the largest, and the conveying distance is the largest.

[0071] The material is put into the second hopper 22. Since the second hopper 22 is blocked by the baffle 31, the material will accumulate in the second hopper 22. As the material in the second hopper 22 increases, the second hopper 22 gradually moves downward under the action of the gravity of the material, and the second fixing plate 34 gradually slides downward along the guide column 20. The connecting block 26 gradually moves downward and gradually approaches the cam 18.

[0072] The second motor 8 is started, and the second rotating shaft 32 rotates under the action of the first belt 10. The second rotating shaft 32 drives the cam 18 to rotate through the second belt 17. When the protrusion of the cam 18 gradually approaches the connecting block 26, the protrusion of the cam 18 pushes the connecting block 26 to move the connecting block 26 upward, and the slider 24 slides upward against the elastic force of the second spring 25. Since the gravitational potential energy of the material in the second hopper 22 is greater than the elastic potential energy of the first spring 21 and the elastic potential energy of the second spring 25. Therefore, when the slider 24 moves upward, the second hopper 22 does not move. The connecting block 26 pushes the baffle 31 to move through the rotating rod 29, so that the baffle 31 moves to the outside of the second hopper 22, and then the two baffles 31 are separated to open the second hopper 22. The material in the second hopper 22 falls into the first hopper 11, and falls from the first hopper 11 into the conveying cylinder. The spiral blade 9 conveys the material entering the conveying cylinder to the left and flows out through the discharge port 33.

[0073] When the protrusion of the cam 18 gradually separates from the connecting block 26, under the action of the second spring 25, the connecting block 26 moves downward along the chute 23, and the connecting block 26 drives the baffle 31 to move into the second hopper 22 through the rotating rod 29. The two baffles 31 gradually approach each other and block the second hopper 22, and the material in the second hopper 22 stops flowing into the first hopper 11, preventing the material in the first hopper 11 from accumulating too much and clogging. As the cam 18 rotates, the connecting block 26 reciprocates up and down, the baffle 31 reciprocates, and the second hopper 22 opens and closes alternately, so that the material in the second hopper 22 intermittently flows into the first hopper 11. In this way, when the material is continuously added to the second hopper 22, the material in the second hopper 22 intermittently flows into the first hopper 11, preventing the material from accumulating and clogging in the first hopper 11.

[0074] When the conveying distance of the screw conveyor needs to be adjusted, first start the second motor 8 to rotate the spiral blade 9 so that the spiral blade 9 coincides with the inner wall of the first cylinder 1, that is, the spiral gap of the spiral blade 9 coincides with the second cylinder 2 and the spiral blade 9 is located in the first cylinder 1.

[0075] Afterwards, start the first motor 5, the first motor 5 drives the guide member to rotate, and the guide member drives the second cylinder 2 to rotate. Under the action of the first cylinder 1, the second cylinder 2 rotates and moves to the right along the first rotating shaft 6, and then the discharge port 33 moves to the right, so that the distance between the discharge port and the feed port becomes smaller, and the conveying distance becomes smaller.

[0076] like Figure 8As shown, when the second cylinder 2 moves to the right, the right end of the second cylinder 2 gradually moves away from the right end of the first cylinder 1. When the conveying distance is less than the maximum conveying distance, the right end of the second cylinder 2 extends beyond the right end of the first cylinder 1. Then, when the conveying distance needs to be increased, the first motor 5 is rotated in the opposite direction, and the guide member drives the second cylinder 2 to rotate while the second cylinder 2 moves to the left, thereby moving the discharge port 33 to the left, increasing the distance between the discharge port 33 and the feed port, and increasing the conveying distance.

[0077] When the second cylinder 2 moves along the first rotating shaft 6, since the spiral blade 9 overlaps with the first cylinder 1, the second cylinder 2 will not contact the spiral blade 9 when moving. This can prevent the material particles remaining on the second cylinder 2 from contacting the spiral blade 9, prevent the second cylinder 2 from being rubbed by the material particles during the movement, and protect the inner wall of the second cylinder 2.

[0078] Embodiment 3: This embodiment is an improvement based on embodiment 2.

[0079] A screw rod 15 is rotatably arranged in the first hopper 11. A fixed rod 16 is fixedly connected in the first hopper 11, and the screw rod 15 is rotatably mounted on the fixed rod 16. When the material enters the first hopper 11, the screw rod 15 stirs the material in the first hopper 11 to prevent the material from accumulating and clogging in the first hopper 11.

[0080] The screw rod 15 is transmission-connected with the second rotating shaft 32. The fixed rod 16 is fixedly connected with the gear box 12. The second rotating shaft 32 passes through the gear box 12 and rotates with the gear box 12. The first bevel gear 13 is coaxially fixedly connected to the second rotating shaft 32, and the first bevel gear 13 is located in the gear box 12. The lower end of the screw rod 15 extends into the gear box 12 and rotates with the gear box 12. The end of the screw rod 15 extending into the gear box 12 is coaxially fixedly connected with the second bevel gear 14, and the first bevel gear 13 and the second bevel gear 14 are meshed.

[0081] When the second rotating shaft 32 rotates, the second rotating shaft 32 drives the first bevel gear 13 to rotate, the first bevel gear 13 drives the second bevel gear 14 to rotate, and then the screw rod 15 rotates. The screw rod 15 has a stirring effect on the material entering the first hopper 11, so that the material quickly flows into the conveying cylinder, further preventing the material from accumulating and clogging in the first hopper 11.

[0082] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A screw conveyor, comprising a conveying cylinder, characterized in that: The conveying cylinder comprises a first cylinder (1) and a second cylinder (2); the first cylinder (1) is fixedly arranged, and the second cylinder (2) is movably arranged; the first cylinder (1) and the second cylinder (2) have the same diameter and pitch; and a driving component for driving the second cylinder (2) to move is arranged on the first cylinder (1); A feed port is provided above the right end of the first cylinder (1), and a discharge port (33) is provided on the second cylinder (2); a spiral blade (9) is rotatably provided inside the first cylinder (1); a second motor (8) is fixed to the second cylinder (2), and the second motor (8) is drivingly connected to the spiral blade (9); When the distance between the discharge port (33) and the feed port needs to be adjusted, the second cylinder (2) is driven to rotate by the driving assembly, and under the action of the first cylinder (1), the second cylinder (2) simultaneously moves axially, thereby adjusting the conveying distance; The pitch of the spiral blade (9) is equal to the pitch of the first cylinder (1).

2. A screw conveyor according to claim 1, characterized in that: The driving assembly comprises a first motor (5) and a guide member; the guide member comprises a rib (7) and a first rotating shaft (6); the first motor (5) is fixed to the left end of the second cylinder (2); the motor shaft of the first motor (5) is coaxially fixedly connected to the first rotating shaft (6), and the first rotating shaft (6) is coaxially arranged with the first cylinder (1); a plurality of ribs (7) are fixed to the first rotating shaft (6), and the ribs (7) are arranged along the length direction of the first rotating shaft (6); the left end of the second cylinder (2) is slidably sleeved on the guide member, and the right end of the second cylinder (2) is provided with a matching hole (4) adapted to the guide member.

3. A screw conveyor according to claim 1, characterized in that: A feeding mechanism is provided at the feeding port; the feeding mechanism comprises a second hopper (22) and a first hopper (11); the first hopper (11) is fixedly mounted on the first cylinder (1) and is connected to the feeding port; the second hopper (22) is elastically movably arranged at the upper end of the first hopper (11); the second hopper (22) is slidably connected to two baffles (31); when the two baffles (31) are in contact, the second hopper (22) is shielded; when the two baffles (31) are separated, the second hopper (22) is opened; a connecting block (26) is elastically slidably connected to the second hopper (22); a cam (18) cooperating with the connecting block (26) is rotatably mounted on the first hopper (11); one end of the baffle (31) extends to the outside of the second hopper (22); the baffle (31) and the connecting block (26) are connected via a rotating rod (29); The baffle (31) blocks the second hopper (22), and material is added into the second hopper (22). Under the action of the gravity of the material, the second hopper (22) moves downward, and the connecting block (26) moves downward and approaches the cam (18). When the cam (18) rotates, it pushes the connecting block (26) to move upward, and the connecting block (26) pushes the baffle (31) to move outward through the rotating rod (29), so that the second hopper (22) opens, and the material in the second hopper (22) falls into the first hopper (11).

4. A screw conveyor according to claim 3, characterized in that: The first hopper (11) is fixedly connected to a first fixing plate (19), a guide column (20) is fixedly mounted on the first fixing plate (19), the second hopper (22) is fixedly connected to a second fixing plate (34), the second fixing plate (34) is elastically slidably sleeved on the guide column (20); each guide column (20) is sleeved with a first spring (21), the first spring (21) is fixedly connected between the first fixing plate (19) and the second fixing plate (34).

5. A screw conveyor according to claim 4, characterized in that: A third fixing plate is fixed to the lower end of the second fixing plate (34), a sliding groove (23) is vertically provided on the upper edge of the third fixing plate, a sliding block (24) is slidably provided in the sliding groove (23), and the sliding block (24) is fixedly connected to the connecting block (26); a second spring (25) is provided in the sliding groove (23), one end of the second spring (25) is fixedly connected to the sliding block (24), and the other end of the second spring (25) is fixedly connected to the end wall of the sliding groove (23).

6. A screw conveyor according to claim 5, characterized in that: There are two connecting blocks (26), which are symmetrically arranged on both sides of the second hopper (22). There are two cams (18), which correspond to the two connecting blocks (26) one by one, and the cams (18) and the corresponding connecting blocks (26) cooperate with each other. Each connecting block (26) is rotatably connected to two rotating rods (29), and the two rotating rods (29) on the same connecting block (26) are respectively connected to the two baffles (31).

7. A screw conveyor according to claim 6, characterized in that: The first hopper (11) is rotatably connected to a second rotating shaft (32); the second motor (8) is a double-shaft motor, one of the motor shafts on the second motor (8) is drivingly connected to the spiral blade (9); the other motor shaft on the second motor (8) is drivingly connected to the second rotating shaft (32) via a first belt (10); The cam (18) and the second rotating shaft (32) are connected in transmission via a second belt (17).

8. The screw conveyor according to claim 1, characterized in that: A screw rod (15) is rotatably arranged in the first hopper (11); the screw rod (15) has a stirring effect on the material in the first hopper (11), thereby preventing the material from being accumulated in the first hopper (11).

9. A screw conveyor according to claim 8, characterized in that: A fixed rod (16) is fixedly connected inside the first hopper (11), and the screw rod (15) is rotatably mounted on the fixed rod (16); the fixed rod (16) is fixedly connected to a gear box (12); a second rotating shaft (32) passes through the gear box (12) and rotatably cooperates with the gear box (12); a first bevel gear (13) is coaxially fixedly connected to the second rotating shaft (32), and the first bevel gear (13) is located in the gear box (12); the lower end of the screw rod (15) extends into the gear box (12); one end of the screw rod (15) extending into the gear box (12) is coaxially fixedly connected to a second bevel gear (14), and the first bevel gear (13) and the second bevel gear (14) are meshed.

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