Roller type screening device capable of automatically adjusting roller gap

Abstract

The invention discloses a roller type screening device capable of automatically adjusting a roller gap. The lower ends of the plurality of rocker frames are detachably mounted at the lower parts in the two side walls at equal intervals respectively; the reset pieces are detachably installed at the two ends of the interior of each rocker frame respectively; the driving assembly is connected to the lower portion of each rocker frame, one end of the driving assembly penetrates through the side wall of the end to be connected with a driving chain wheel, and the other end of the driving assembly penetrates through the side wall of the end to be connected with a driven chain wheel; the screening roller is rotationally connected to the upper portion of each rocker frame; the driving chain ring is arranged on the driving chain wheel in a surrounding manner; the driven chain rings are arranged on the screening roller chain wheels and the driven chain wheels in a surrounding mode, wherein the screening roller chain wheels and the driven chain wheels are vertically opposite. The screening rollers are supported by the elastic rockers, the roller gap can be increased within a certain range, when bolts falling from the upstream are larger than the roller gap, the screening rollers are automatically bounced off, the gap is increased, the bolts fall down, then the screening rollers are reset, and the gap returns to the normal value.

Description

Technical Field

[0001] The invention patent relates to a roller screening device, specifically a roller screening device capable of automatically adjusting the roller gap, and belongs to the technical field of tobacco leaf pretreatment auxiliary devices. Background Art

[0002] Generally speaking, in the roller sand screening machine in the tobacco leaf threshing and redrying production line, the screening rollers are fixed on the side, the roller spacing is equal, and the roller gap remains unchanged. When the entire production line is running, if the size of the bolts or other foreign objects dropped from the upstream equipment is larger than the roller gap, it may cause a series of hazards, mainly including the following aspects:

[0003] On the one hand, the equipment may get stuck and shut down; fallen bolts or other large foreign objects may get stuck in the gap between the screening rollers, which may prevent the rollers from rotating normally and cause the equipment to "get stuck"; when the equipment stops operating, the production line will stop, affecting the production process, and may even require shutdown for maintenance, resulting in a longer downtime and a serious decline in production efficiency.

[0004] On the other hand, it may damage the screening rollers and other key components. If foreign matter gets stuck between the rollers and exerts pressure on the screening rollers, long-term operation may cause damage to key components of the roller screening device, such as the roller body, bearings, gears, and even cause component breakage or increased wear. Replacing these components may require high maintenance costs and a long repair time.

[0005] Another issue is material blockage and poor flow. When foreign matter gets stuck between the rollers, the originally smooth flow of materials may be blocked, causing material to accumulate at the feed port or screening area. This will not only affect the screening effect, resulting in uneven or incomplete material sorting, but may also cause material flow stagnation, thereby exacerbating the equipment's blockage problem and further increasing the maintenance burden.

[0006] Therefore, the key to solving the above technical problems is to develop a roller screening device with high practicality and working reliability and in which the roller gap can be automatically increased. Summary of the invention

[0007] In view of the many defects and deficiencies in the above-mentioned background technology, the present invention has made improvements and innovations, aiming to provide a roller screening device with an automatically enlarged roller gap. The screening roller is supported by an elastic rocker, which can increase the roller gap within a certain range. When the bolt dropped upstream is larger than the roller gap, the screening roller automatically pops open, the gap increases, the bolt falls, and then the screening roller is reset, and the gap returns to normal.

[0008] In order to solve the above problems and achieve the above invention objectives, the present invention provides a roller screening device capable of automatically adjusting the roller gap by adopting the following design structure and the following technical solutions:

[0009] As an improvement of the roller screening device capable of automatically adjusting the roller gap, the present invention includes:

[0010] Side panels (1), the side panels (1) are arranged opposite to each other;

[0011] A plurality of rocker frames (2), the lower ends of which are equidistantly and detachably mounted on the inner lower parts of the two side panels (1);

[0012] A reset member (3), the reset member (3) being detachably mounted on both ends of each rocker frame (2);

[0013] A driving assembly (4), the driving assembly (4) is respectively connected to the lower part of each rocker frame (2), one end of the driving assembly (4) passes through the end side support (1) and is connected to a driving sprocket (41), and the other end of the driving assembly (4) passes through the end side support (1) and is connected to a passive sprocket (42);

[0014] A screening roller (5), the screening roller (5) is rotatably connected to the upper part of each rocker frame (2), and one end of the screening roller (5) passes through the end side rib (1) and is connected to a screening roller sprocket (51);

[0015] A driving chain ring (6), the driving chain ring (6) is arranged around the driving sprocket (41);

[0016] The passive chain ring (7) is respectively arranged around the screening roller sprocket (51) and the passive sprocket (42) which are opposite to each other up and down.

[0017] As an improvement of the above-mentioned patent of the present invention, the rocker frame (2) comprises:

[0018] Mounting frame (21);

[0019] The support (22) is respectively sleeved on the lower parts of both ends of the mounting frame (21).

[0020] As a further improvement of the above-mentioned invention, the mounting frame (21) comprises:

[0021] The drive shaft installation cylinder (211) is in the shape of a square column with two openings at both ends and a hollow interior. The two ends of the drive shaft installation cylinder (211) are also connected to the limiting plates.

[0022] Sieving roller support seat (212), the sieving roller support seats (212) are symmetrically connected to the upper ends of both sides of the drive shaft mounting cylinder (211). A support ring for connecting with the sieving roller (5) is provided on the upper part of the drive shaft mounting cylinder (211). Among them, the opening of the drive shaft mounting cylinder (211) is a square hole.

[0023] As a further improvement of the above-mentioned invention patent, the support (22) includes:

[0024] Fixing plate (221), the fixing plate (221) is an integral rectangular plate-like member. A convex connecting part is provided in the middle of the fixing plate (221). A drive shaft connecting hole is penetrated and opened in the middle of the convex connecting part. Fixing holes for installing on the side wall (1) are penetrated and opened at both ends of the fixing plate (221).

[0025] Fixing column (222), one end of the fixing column (222) is connected to the middle of the convex connecting part of the fixing plate (221). The fixing column (222) is an integral square columnar structure with openings at both ends and a hollow interior. The opening of the fixing column (222) is square-shaped.

[0026] Among them, the fixing plate (221) is inclined and connected to the lower part inside the side wall (1).

[0027] As a further improvement of the above-mentioned invention patent, the reset member (3) is an integral square columnar structure with openings at both ends and a hollow interior. The opening of the reset member (3) is square-shaped. The size of the opening of the reset member (3) is adapted to the outer circumference of the fixing column (222). Among them, the reset member (3) is symmetrically sleeved inside both ends of the drive shaft mounting cylinder (211) of the mounting frame (21). The opening of the reset member (3) is sleeved on the outside of the fixing column (222) of the support (22).

[0028] As a further improvement of the above-mentioned invention patent, the four corners of the square opening inside the reset member (3) are respectively located in the middle of each side of the reset member (3). Among them, the reset member (3) is made of an elastic material.

[0029] As a further improvement of the above-mentioned invention patent, the cross-section of the side wall (1) is in an inverted "C" shape. The opening of the side wall (1) is arranged outward. A plurality of drive shaft connection ports and sieving roller connection ports are penetrated and opened at equal distances along the length direction at both the upper and lower ends of the side wall (1). Among them, a support mounting hole adapted to be connected with the support (22) is also obliquely opened on the side wall (1) at the position of the sieving roller connection port.

[0030] As a further improvement of the above-mentioned patent of the present invention, the driving assembly (4) includes a driving shaft and two sets of driving sprockets (41) connected to one end of the driving shaft (43) and a set of driven sprockets (42) connected to the other end of the driving shaft (43), and both ends of the driving shaft (43) are connected to the side panels (1) on the corresponding sides through bearings;

[0031] Both ends of the screening roller (5) are connected to corresponding screening roller support seats (212) via bearings.

[0032] As a further improvement of the above-mentioned patent of the present invention, the driving chain ring (6) is staggeredly connected to two adjacent driving sprockets (41), or the driving chain ring (6) is coaxially connected to several driving sprockets (41).

[0033] As a further improvement of the above-mentioned patent of the present invention, it also includes a protective guide plate (8) arranged obliquely at the inner upper part of the two side panels (1), and the protective guide plate (8) is arranged in an inverted "eight" shape as a whole.

[0034] The working principle is: before using the roller screening device with the above-mentioned design structure capable of automatically adjusting the roller gap, it needs to be directly transported to a designated work place by corresponding transporting equipment or manually for use.

[0035] When the device is working, when tobacco leaves pass through the rows of screening rollers (5), under normal circumstances, the gaps between the screening rollers (5) are equal, and the tobacco leaves are screened;

[0036] When the transported tobacco leaves contain bolts, and the bolts are larger than the normal gap T of the screening rollers (5), the bolts will be stuck in the gap of the screening rollers (5). As the screening rollers (5) continue to rotate, the bolts exert an extrusion force on the screening rollers (5). When the extrusion force is larger than the elastic force of the reset member (3) in the supporting rocker frame (2), the screening rollers (5) on both sides of the bolts automatically pop open until the bolts fall. After the bolts fall, the two screening rollers (5) automatically reset under the elastic action of the reset member (3) and return to normal screening function.

[0037] In the above working process, the external driving device is connected to the driving sprocket (41) connected to the driving chain ring (6) at one end of the side panel (1) through a transmission member to drive the roller screening device to perform screening work; when the external driving device is in operation, the transmission member drives a driving sprocket (41) at one end to rotate, and then under the transmission of the driving chain ring (6), each driving component (4) starts to rotate, so that each driving component (4) drives the driven sprocket (42) connected thereto to rotate, and then the driven sprocket (42) drives the corresponding connected screening roller (5) to rotate through the driven chain ring (7) connected thereto, and finally realizes the operation of the screening device.

[0038] Compared with the prior art, the beneficial effects of the present invention are:

[0039] 1. The patented design of this invention is reasonable, which can automatically solve the problem of bolts blocking the screening roller, causing equipment shutdown and material blockage, thus improving the reliability of the equipment;

[0040] 2. The present invention can automatically adjust the roller gap when there are large particles or hard objects in the material through the setting of the reset part to avoid blockage caused by the material being too large or hard. If the traditional roller screening device does not have an elastic component, it is easy to get stuck or fail to screen smoothly when encountering large or hard materials. The function of the elastic component is to automatically expand the roller gap when encountering large materials to avoid blockage and improve screening efficiency;

[0041] 3. The patent of this invention can effectively alleviate the overload or damage of the roller screening device caused by the material being too large or hard. Compared with the traditional fixed gap design, the reset part can provide moderate elasticity and flexibility when encountering large particle materials, avoiding damage to the equipment due to strong impact or excessive load, and extending the service life of the equipment;

[0042] 4. The patent of this invention can avoid bolt blockage and reduce equipment damage through reset parts, and the elastic component design helps to reduce the frequency and cost of equipment maintenance. It reduces downtime and manual intervention caused by blockage, makes the equipment run more smoothly, and can significantly reduce maintenance costs in long-term use;

[0043] 5. The patent of this invention combines the reset part with the rocker frame with a specially designed structure to ensure that the equipment is more stable during operation, and it is not easy to stop or become unstable due to material blockage or stagnation. This allows the equipment to maintain stable operation in the face of material flow fluctuations or uneven particle sizes;

[0044] 6. The patent of this invention avoids frequent shutdowns for cleaning due to blockage, and the production line can continue to operate, reducing downtime. The automatic adjustment function of the elastic component makes the screening process more efficient and can adapt to materials of different sizes, ensuring high efficiency and continuity in the screening process, and improving production efficiency;

[0045] 7. The design of the reset part of the present invention enables the roller screening device to better adapt to materials of different particle sizes and hardness, especially when processing irregular materials, materials containing large blocks or sticky materials, it can maintain a good screening effect by automatically adjusting the roller gap. This highly adaptable design enhances the availability of the equipment under a variety of complex working conditions. 2. The present invention is ingeniously designed, safe and reliable, and simple in structure, and can be applied to a variety of usage scenarios;

[0046] 8. The patented material feeding port is equipped with a protective guide plate, which can effectively guide the material into the screening area, reduce the splashing or scattering of materials, keep the working environment clean and tidy, and reduce material waste;

[0047] 9. The protective guide plate set in the patent of this invention can optimize the delivery angle and distribution of materials, improve the fluidity during the screening process, make the materials pass through the screen more smoothly, which is conducive to improving the screening efficiency and thus extending the service life of the device;

[0048] 10. The simple structure of the patented invention reduces production and maintenance costs, while also reducing the failure rate and improving the reliability and durability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] The specific implementation methods of the present invention are further described in detail below in conjunction with the accompanying drawings, wherein:

[0050] Figure 1 It is a schematic diagram of the overall structure of the patent of this invention;

[0051] Figure 2 It is one of the partial structural schematic diagrams of the patent of this invention;

[0052] Figure 3 This is the second partial structural diagram of the patent of the present invention;

[0053] Figure 4 This is one of the partial structural cross-sectional views of the patent of this invention;

[0054] Figure 5 This is one of the partial structural side views of the patent of this invention;

[0055] Figure 6 This is the second side view of the partial structure of the patent of the present invention;

[0056] Figure 7 This is the second partial structural cross-sectional view of the patent of the present invention;

[0057] Figure 8 It is an exploded view of the local structure of the patent of this invention;

[0058] Fig. 9 This is one of the usage status diagrams of the patent of this invention;

[0059] Fig.10 This is the second usage state diagram of the patent of this invention;

[0060] Fig.11 This is the third usage state diagram of the patent of this invention;

[0061] Among them, the numbers in the figure are: 1—side help;

[0062] 2—rocker frame, 21—mounting frame, 211—drive shaft mounting cylinder, 212—screening roller support seat, 22—support, 221—fixing plate, 222—fixing column;

[0063] 3—Reset piece;

[0064] 4—driving assembly, 41—driving sprocket, 42—driven sprocket, 43—driving shaft;

[0065] 5—screening roller, 51—screening roller sprocket;

[0066] 6—driving chain ring;

[0067] 7—passive link;

[0068] 8—Protective guide plate. DETAILED DESCRIPTION

[0069] In order to make the technical means, creative features, purpose and effect of the present invention easy to understand, the technical solution of the present invention is further described in detail in combination with the drawings and specific implementation methods. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict. The present invention will be described in detail with reference to the drawings and in combination with the embodiments.

[0070] As the instruction manual Figure 1 To the instruction manual Fig.11 A roller screening device capable of automatically adjusting roller gap is shown, comprising:

[0071] The side supports 1 are arranged opposite to each other;

[0072] A plurality of rocker frames 2, the lower ends of which are equidistantly and detachably mounted at the inner lower parts of the two side panels 1;

[0073] A reset member 3, which is detachably mounted at both ends of each rocker frame 2;

[0074] The driving assembly 4 is connected to the lower part of each rocker frame 2, one end of the driving assembly 4 passes through the end side 1 and is connected to a driving sprocket 41, and the other end of the driving assembly 4 passes through the end side 1 and is connected to a passive sprocket 42;

[0075] Screening rollers 5, the screening rollers 5 are rotatably connected to the upper part of each rocker frame 2, and one end of the screening roller 5 passes through the end side 1 and is connected to a screening roller sprocket 51;

[0076] A driving chain ring 6, the driving chain ring 6 is arranged around the driving sprocket 41;

[0077] The passive chain ring 7 is respectively arranged around the screening roller sprocket 51 and the passive sprocket 42 which are opposite to each other up and down.

[0078] Further, such as Figures 6 to 8 As shown, the rocker frame 2 includes:

[0079] Mounting frame 21;

[0080] The support 22 is respectively sleeved on the lower parts of both ends of the mounting frame 21.

[0081] Specifically, Figure 8 As shown, the mounting frame 21 includes:

[0082] The drive shaft mounting cylinder 211 is in the shape of a square column with two openings at both ends and a hollow interior. The two ends of the drive shaft mounting cylinder 211 are connected to the limiting plates.

[0083] The screening roller support seat 212 is symmetrically connected to the upper two ends of the drive shaft mounting cylinder 211. The upper part of the drive shaft mounting cylinder 211 is provided with a support ring connected to the screening roller 5, wherein the opening of the drive shaft mounting cylinder 211 is a square hole.

[0084] In the patent of the present invention, a through hole is opened in the middle of the limiting plate, and the limiting plate is used to limit the movement of the resetting member 3 and also facilitate the installation of the resetting member 3.

[0085] Even more specifically, Figure 8 As shown, the support 22 includes:

[0086] The fixing plate 221 is a rectangular plate-shaped member as a whole. A protruding connection portion is provided in the middle of the fixing plate 221. A drive shaft connection hole is provided through the middle of the protruding connection portion. Both ends of the fixing plate 221 are provided with fixing holes installed on the side panel 1.

[0087] A fixing column 222, one end of which is connected to the middle of the raised connection portion of the fixing plate 221. The fixing column 222 is in the shape of a square column with two openings at both ends and a hollow interior. The opening of the fixing column 222 is in a square shape;

[0088] The fixing plate 221 is connected obliquely to the lower inner portion of the side panel 1 .

[0089] In the present invention, the thickness of the side plates of the fixing column 222 is consistent.

[0090] Further, such as Figure 8As shown, the reset member 3 is integrally in the structure of a square columnar body with openings at both ends and a hollow interior. The opening of the reset member 3 is square-shaped, and the size of the opening of the reset member 3 is adapted to the outer circumference of the fixed column 222. Among them, the reset member 3 is symmetrically sleeved inside both ends of the drive shaft mounting cylinder 211 of the mounting frame 21, and the opening of the reset member 3 is sleeved outside the fixed column 222 of the support 22.

[0091] Specifically, as Figure 8 shown, the four corners of the square opening inside the reset member 3 are respectively located in the middle of each side of the reset member 3. Among them, the reset member 3 is made of an elastic material.

[0092] In this invention patent, the reset member 3 is made of rubber material, and can be integrally formed, or can be four cylindrical rubber bodies. The four cylindrical rubber bodies are annularly filled in the gap formed by the fixed column 222 and the drive shaft mounting cylinder 211.

[0093] Furthermore, as Figure 8 shown, the cross-section of the side wall 1 is in a "C" shape, the opening of the side wall 1 is arranged outward, and several drive shaft connection ports and screening roller connection ports are equidistantly penetrated along the length direction at both the upper and lower ends of the side wall 1. Among them, a support mounting hole adapted to be connected to the support 22 is also obliquely opened on the side wall 1 at the screening roller connection port.

[0094] Furthermore, as Figure 7 and Figure 8 shown, the drive assembly 4 includes a drive shaft, two groups of driving sprockets 41 connected to one end of the drive shaft 43, and a group of driven sprockets 42 connected to the other end of the drive shaft 43. Both ends of the drive shaft 43 are connected to the corresponding side wall 1 through bearings;

[0095] Both ends of the screening roller 5 are connected to the corresponding screening roller support seats 212 through bearings.

[0096] In this invention patent, an external driving device drives the roller screening device to perform screening work by connecting to the driving sprocket 41 connected to the non-driving chain link 6 at one end of the side wall 1 through a transmission member.

[0097] Furthermore, as Figures 1 to 4 shown, the drive chain link 6 is交错连接 in adjacent two driving sprockets 41, or the drive chain link 6 is coaxially connected to several driving sprockets 41.

[0098] Furthermore, as Figures 1 to 3 shown, it further includes a protective guide plate 8 inclinedly arranged in the upper part inside the two side walls 1. The protective guide plate 8 is integrally arranged in an inverted "V" shape.

[0099] It should be noted that the description of "交错连接" in the original text may not be a standard English expression. A more accurate or common expression might be needed depending on the specific context. Here, a literal translation is provided first.At the same time, in the patent of the present invention, the connections referred to are all fixed connections or movable connections or detachable connections, among which the fixed connection is a welding connection or is directly processed into an integral structure; the movable connection or detachable connection or the split structure is a hinged connection, an internal and external threaded connection, a bayonet connection, a plug-in socket connection, a bolt assembly connection or a screw connection.

[0100] In summary, the more specific implementation methods of the present invention are:

[0101] The support 22 is fixed to the lower inner part of the side panel 1, and the lower parts of the two ends of the mounting frame 21 are sleeved on the corresponding support 22; the fixing column 222 is sleeved in the square hole of the reset member 3, and the outer side of the reset member 3 is installed at the two ends of the square hole in the drive shaft mounting tube 211. Under the balanced support of the elastic force of the reset member 3, the mounting frame 21 and the support 22 maintain a stable relative position.

[0102] The driving shaft 43 passes through the inner hole in the middle of the fixed plate 221 of the support 22, and the driving sprocket 41 is installed at one end of the driving shaft 43, and the passive sprocket 42 is installed at the other end; one end of the screening roller 5 passes through the side 1 to install the screening roller sprocket 51; the driving sprockets 41 on the two adjacent driving components 4 drive the driving shaft 43 and the passive sprocket 42 to rotate through the staggered driving chain rings 6, and the passive sprocket 42 drives the screening roller sprocket 51 to rotate through the passive chain ring 7 to drive each screening roller 5 to rotate separately; because the center distances of the mounting holes of the screening roller 5 on the rocker frame 2 and the mounting holes of the support 22 are fixed, and the driving shaft 43 is coaxial with the support 22, the center distance of the passive chain ring 7 is fixed, and the swing of the rocker frame 2 and the screening roller 5 does not affect the transmission of the passive chain ring 7.

[0103] When a horizontal force is applied to the screening roller 5, a rotational torque is generated around the support 22 through the rocker frame 2. When the torque is greater than the initial elastic force of the reset member 3, the screening roller 5 and the rocker frame 2 can rotate and swing within a certain range along the axis of the support 22; when the horizontal force applied to the screening roller 5 is cancelled, the rotational torque disappears, and the screening roller 5 and the rocker frame 2 are reset.

[0104] Before using the roller screening device with the above-mentioned design structure capable of automatically adjusting the roller gap, it is necessary to directly transport it to a designated work place by corresponding transport equipment or manually for use.

[0105] When the equipment is working, when tobacco leaves pass through the rows of screening rollers 5, under normal circumstances, the gaps between the screening rollers 5 are equal, and the tobacco leaves are screened;

[0106] When the transported tobacco leaves contain bolts and the bolts are larger than the normal gap of the screening roller 5, the bolts will be stuck in the gap of the screening roller 5. As the screening roller 5 continues to rotate, the bolts will generate an extrusion force on the screening roller 5. When the extrusion force is greater than the elastic force of the reset member 3 in the supporting rocker frame 2, the screening rollers 5 on both sides of the bolts will automatically pop open until the bolts fall. After the bolts fall, the two screening rollers 5 will reset under the elastic action of the reset member 3 and return to normal screening function.

[0107] In the above working process, the external driving device is connected to the active sprocket 41 connected to the driving chain ring 6 at one end of the side panel 1 through a transmission member to drive the roller screening device to perform screening work; when the external driving device is running, the transmission member drives an active sprocket 41 at one end to rotate, and then under the transmission of the driving chain ring 6, each driving component 4 starts to rotate, so that each driving component 4 drives the passive sprocket 42 connected thereto to rotate, and then the passive sprocket 42 drives the correspondingly connected screening roller 5 to rotate through the passive chain ring 7 connected thereto, and finally realizes the operation of the screening device.

[0108] Finally, it should be noted that the specific implementation methods of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned implementation methods, and various changes can be made thereto within the knowledge scope of ordinary technicians in this field.

Claims

1. A roller screening device capable of automatically adjusting roller gap, characterized in that: include: Side panels (1), the side panels (1) are arranged opposite to each other; A plurality of rocker frames (2), the lower ends of which are equidistantly and detachably mounted on the inner lower parts of the two side panels (1); A reset member (3), the reset member (3) being detachably mounted on both ends of each rocker frame (2); A driving assembly (4), the driving assembly (4) is respectively connected to the lower part of each rocker frame (2), one end of the driving assembly (4) passes through the end side support (1) and is connected to a driving sprocket (41), and the other end of the driving assembly (4) passes through the end side support (1) and is connected to a passive sprocket (42); A screening roller (5), the screening roller (5) is rotatably connected to the upper part of each rocker frame (2), and one end of the screening roller (5) passes through the end side rib (1) and is connected to a screening roller sprocket (51); A driving chain ring (6), the driving chain ring (6) is arranged around the driving sprocket (41); The passive chain ring (7) is respectively arranged around the screening roller sprocket (51) and the passive sprocket (42) which are opposite to each other up and down.

2. A roller screening device capable of automatically adjusting roller gap according to claim 1, characterized in that: The rocker frame (2) comprises: Mounting frame (21); The support (22) is respectively sleeved on the lower parts of both ends of the mounting frame (21).

3. A roller screening device capable of automatically adjusting roller gap according to claim 2, characterized in that: The mounting frame (21) comprises: The drive shaft installation cylinder (211) is in the shape of a square column with two openings at both ends and a hollow interior. The two ends of the drive shaft installation cylinder (211) are also connected to the limiting plates. A screening roller support seat (212) is symmetrically connected to the upper two ends of the drive shaft mounting cylinder (211), and a support ring connected to the screening roller (5) is provided on the upper part of the drive shaft mounting cylinder (211), wherein the opening of the drive shaft mounting cylinder (211) is a square hole.

4. A roller screening device capable of automatically adjusting roller gap according to claim 2, characterized in that: The support (22) comprises: A fixing plate (221), the fixing plate (221) is a rectangular plate-shaped member as a whole, a protruding connection portion is provided in the middle of the fixing plate (221), a driving shaft connection hole is provided through the middle of the protruding connection portion, and fixing holes installed on the side panels (1) are provided through both ends of the fixing plate (221); A fixing column (222), one end of which is connected to the middle of the raised connection portion of the fixing plate (221); the fixing column (222) as a whole is in the shape of a square column with openings at both ends and a hollow interior; the opening of the fixing column (222) is in the shape of a square; The fixing plate (221) is connected obliquely to the lower inner part of the side panel (1).

5. The roller screening device capable of automatically adjusting roller gap according to claim 1, characterized in that: The reset member (3) is in the form of a square columnar structure with openings at both ends and a hollow interior. The opening of the reset member (3) is in a square shape, and the size of the opening of the reset member (3) is adapted to the outer circumference of the fixed column (222). The reset member (3) is symmetrically sleeved inside the two ends of the drive shaft mounting cylinder (211) of the mounting frame (21), and the opening of the reset member (3) is sleeved outside the fixed column (222) of the support (22).

6. A roller screening device capable of automatically adjusting roller gap according to claim 1 or 5, characterized in that: The four corners of the square opening inside the reset member (3) are respectively located in the middle of each side of the reset member (3), wherein the reset member (3) is made of elastic material.

7. A roller screening device capable of automatically adjusting roller gap according to claim 1, characterized in that: The cross-section of the side wall (1) is in a "匚" shape, the opening of the side wall (1) faces outward, and a plurality of drive shaft connection ports and screening roller connection ports are evenly and penetratingly arranged along the length direction at both the upper and lower ends of the side wall (1). Among them, a support mounting hole adapted to be connected to the support (22) is obliquely opened on the side wall (1) at the screening roller connection port.

8. The roller screening device capable of automatically adjusting roller gap according to claim 1, characterized in that: The drive assembly (4) includes a drive shaft, two groups of driving sprockets (41) connected to one end of the drive shaft (43), and a group of driven sprockets (42) connected to the other end of the drive shaft (43). Both ends of the drive shaft (43) are connected to the side wall (1) on the corresponding side through bearings. Both ends of the screening roller (5) are connected to the corresponding screening roller support seats (212) through bearings.

9. The roller screening device capable of automatically adjusting roller gap according to claim 1, characterized in that: The drive chain rings (6) are交错 connected to two adjacent driving sprockets (41), or the drive chain rings (6) are coaxially connected to several driving sprockets (41).

10. The roller screening device capable of automatically adjusting roller gap according to claim 1, characterized in that: It further includes a protective guide plate (8) obliquely arranged in the upper part of the two side walls (1), and the protective guide plate (8) is integrally arranged in an inverted "八" shape.

Images