Improved loop chain scraper conveyor

Abstract

The utility model discloses an improved loop chain scraper conveyor, which relates to the technical field of conveying machinery and comprises a main body structure and a conveying device, a conveying cavity is formed in the main body structure; the conveying cavity is composed of at least two straight conveying cavities and at least one turning cavity. The bottom of the turning cavity is provided with a turning groove which is used for the scraper to extend in to push materials and is communicated with the direct conveying groove; a plurality of rotatable riding wheels are arranged in the upper-layer space of the straight conveying cavity in an array mode in the conveying direction; the riding wheels are used for supporting the loop chain; a plurality of rotatable upper-layer pressing wheels are arranged in the upper-layer space of the turning cavity in the turning direction in an array mode; a plurality of rotatable lower-layer pressing wheels are arranged in the lower-layer space of the turning cavity in the turning direction in an array mode; and the upper-layer pressing wheel and the lower-layer pressing wheel are used for pressing the loop chain. Rolling friction force is generated between the loop chain and the supporting wheel, the upper layer pressing wheel and the lower layer pressing wheel, and compared with sliding friction force generated by a traditional supporting plate frame and an arc-shaped pressing plate, the rolling friction force is smaller, abrasion is smaller, and therefore durability is higher.

Description

Technical Field

[0001] The present application relates to the technical field of conveying machinery, and in particular to an improved chain scraper conveyor. Background Art

[0002] Chain scraper conveyors are widely used in environmental protection, chemical industry, machinery, metallurgy, light industry, food, building materials, electricity, mining and other fields. They are suitable for conveying bulk materials such as powder, small particles, and small blocks. The conventional structure is generally composed of parts such as casing, motor, driving wheel, driven wheel, curved pressure plate at turning position, chain, scraper and tensioning screw. The operating principle is that the motor drives the driving wheel to drive the scraper on the conveying chain to make periodic reciprocating motion. The material can be continuously transported from the input end to the output end on the casing, thereby completing the material conveying task. Therefore, the chain is the core functional component of the entire conveyor, and its operating condition directly determines the quality of the work.

[0003] In the actual industrial production process, the operation of the chain scraper conveyor must not only meet the technical requirements, but also withstand the test of stability and durability. The upper chain of the common chain scraper conveyor is supported by the support frame welded on both sides of the casing, and the arc pressure plate is used to press the chain at the turning position to play a steering role. During the operation of the equipment, the chain, the support frame and the arc pressure plate produce sliding friction. In addition, the turning position is the place where the conveyor chain is under the greatest pressure, which undoubtedly accelerates the wear of the chain and even causes chain breakage. Utility Model Content

[0004] In view of this, the purpose of the present application is to provide an improved chain scraper conveyor, which can effectively reduce the wear or risk of chain breakage of the chain and thus increase its service life.

[0005] In order to achieve the above technical purpose, the present application provides an improved chain scraper conveyor, including a main structure and a conveying device;

[0006] A conveying cavity is provided in the main structure;

[0007] The conveying chamber is composed of at least two straight conveying chambers and at least one turning chamber;

[0008] The turning chamber is arranged between two adjacent straight-feeding chambers;

[0009] The conveying device includes a driving motor, a transmission assembly, a scraper, and an endless chain connected to the scraper and used to pull the scraper;

[0010] The driving motor drives the endless chain to move through the transmission assembly;

[0011] The bottom of the direct delivery chamber is provided with a direct delivery slot for the scraper to extend into to push the material;

[0012] The bottom of the turning chamber is provided with a turning groove for the scraper to extend into to push the material and connected to the straight feeding groove;

[0013] The upper space of the direct delivery chamber is provided with a plurality of rotatable supporting wheels in an array along the delivery direction;

[0014] The supporting wheel is used to support the endless chain;

[0015] The upper space of the turning chamber is provided with a plurality of rotatable upper pressure wheels in an array along the turning direction;

[0016] The lower space of the turning chamber is provided with a plurality of rotatable lower pressure wheels in an array along the turning direction;

[0017] The upper pressure wheel and the lower pressure wheel are used to press the endless chain.

[0018] Furthermore, two parallel and spaced direct-feeding limit plates are installed at the bottom of the direct-feeding chamber;

[0019] The direct-feeding slot is formed between the two direct-feeding limiting plates;

[0020] The direct-feeding limiting plate is also used to support the endless chain so that a first gap is formed between the scraper extending into the direct-feeding trough and the bottom of the direct-feeding trough.

[0021] Furthermore, two parallel and spaced turning limit plates are installed at the bottom of the turning chamber;

[0022] The turning groove is formed between the two turning limit plates;

[0023] The turning limit plate in the turning chamber is connected to the direct delivery limit plate in the adjacent direct delivery chamber.

[0024] Furthermore, a wear-resistant layer is provided on the direct-feed limiting plate.

[0025] Furthermore, the wear-resistant layer is a wear-resistant rubber strip.

[0026] Furthermore, the supporting wheel is sleeved on the first rotating shaft and rotates synchronously with the first rotating shaft;

[0027] The first rotating shaft is rotatably mounted on the direct delivery cavity via a first bearing.

[0028] Furthermore, the upper pressing wheel is sleeved on the second rotating shaft and can rotate freely on the second rotating shaft;

[0029] The second rotating shaft is fixedly mounted on the turning cavity;

[0030] The lower layer pressing wheel is fixed on the third rotating shaft and rotates synchronously with the third rotating shaft;

[0031] The third rotating shaft is rotatably mounted in the turning cavity through a second bearing.

[0032] Furthermore, the supporting wheel, the upper pressure wheel and the lower pressure wheel are all provided with an annular groove for the ring chain to be movably inserted into.

[0033] Furthermore, the main structure includes at least two straight-feed housings, at least one turning housing, a head housing, and a tail housing;

[0034] The inner cavity of the direct-feeding housing forms the direct-feeding cavity;

[0035] The inner cavity of the turning housing forms the turning cavity;

[0036] The turning housing is connected between two adjacent straight-feed housings;

[0037] The head housing is connected to the head end of the first direct-feed housing;

[0038] The tail housing is connected to the tail end of the last direct-feed housing;

[0039] The head casing or the first direct-feed casing is provided with a discharge port at the bottom;

[0040] The top of the last direct-feeding machine housing is provided with a feed inlet.

[0041] Further, the transmission assembly includes a driving wheel, a driven wheel and a driving chain;

[0042] The driving wheel is pivotally connected to one end of the conveying cavity;

[0043] The driven wheel is pivotally connected to the other end of the conveying chamber;

[0044] The endless chain passes through the driving wheel and the driven wheel;

[0045] The driving motor drives the driving wheel to rotate through a driving chain.

[0046] From the above technical solutions, it can be seen that the improved chain scraper conveyor designed in this application supports the chain in a rolling contact manner by configuring a rotatable supporting wheel on the conveying chamber; and the upper and lower pressure wheels that can rotate are configured in the turning chamber to resist the chain in a rolling contact manner to guide the turning. The rolling friction force generated between the chain and the supporting wheel, the upper pressure wheel and the lower pressure wheel is smaller than the sliding friction force generated by the traditional support frame and the arc pressure plate, and has less wear, so it is more durable, effectively reduces the wear or chain breakage risk of the chain, and increases the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0048] Figure 1 This is a schematic structural diagram of an improved chain scraper conveyor provided in this application;

[0049] Figure 2 for Figure 1 Sectional view at AA position;

[0050] Figure 3 A partial structural schematic diagram of an improved chain scraper conveyor provided in this application;

[0051] Figure 4 for Figure 3 Sectional view of BB position in;

[0052] In the figure: 1. driven wheel; 2. tensioning screw; 3. tail casing; 4. direct feed casing; 5. turning casing; 6. head casing; 7. scraper; 8. chain; 9. drive motor; 10. drive chain; 11. drive wheel; 12. feed port; 13. discharge port; 14. support leg; 15. support wheel; 16. wear-resistant layer; 17. direct feed limit plate; 18. upper pressure wheel; 19. lower pressure wheel; 20. turning limit plate; 201. direct feed trough; 202. turning trough. DETAILED DESCRIPTION

[0053] The technical solutions of the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, not all of them. All other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments in the embodiments of the present application are within the scope of protection of the embodiments of the present application.

[0054] In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0055] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a replaceable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0056] The embodiment of the present application discloses an improved chain scraper conveyor.

[0057] See also Figures 1 to 4 An embodiment of an improved chain scraper conveyor provided in the embodiments of the present application includes:

[0058] Main structure and conveying device.

[0059] A conveying cavity is arranged in the main structure; the conveying cavity is composed of at least two straight conveying cavities and at least one turning cavity, and the turning cavity is arranged between two adjacent straight conveying cavities.

[0060] The conveying device includes a driving motor 9, a transmission assembly, a scraper 7, and a chain 8 connected to the scraper 7 and used to pull the scraper 7. The driving motor 9 drives the chain 8 to move through the transmission assembly; the chain 8 can be designed to be one, so that a single chain 8 can pull multiple scrapers 7. Of course, it is preferably designed to be two, and multiple scrapers 7 are fixed between the two chains 8. The overall structure is more solid and reliable. The scraper 7 can be connected to the chain 8 by bolts and nuts, and there is no specific limitation.

[0061] A straight feeding trough 201 is provided at the bottom of the straight feeding chamber for the scraper 7 to extend into to push the material; a turning trough 202 is provided at the bottom of the turning chamber for the scraper 7 to extend into to push the material, and is connected to the straight feeding trough 201; the driving motor 9 drives the chain 8 to move, thereby driving the scraper 7 to move in the straight feeding trough 201 or the turning trough 202 to push the material.

[0062] The improved design of the present application is that a plurality of rotatable supporting wheels 15 are arranged in an array along the conveying direction in the upper space of the direct delivery chamber, and the supporting wheels 15 are used to support the ring chains 8; taking the design of two ring chains 8 as an example, the supporting wheels 15 are arranged in an array of two by two to ensure that the two ring chains 8 can be supported by the supporting wheels 15.

[0063] The upper space of the turning cavity is arrayed with a plurality of upper pressure wheels 18 that can rotate along the turning direction, and the lower space of the turning cavity is arrayed with a plurality of lower pressure wheels 19 that can rotate along the turning direction; the upper pressure wheels 18 and the lower pressure wheels 19 are used to press against the ring chain 8, so that the ring chain 8 moves in an arc to achieve turning. Taking the design of two ring chains 8 as an example, the upper pressure wheels 18 and the lower pressure wheels 19 are also arrayed in pairs to ensure that the two ring chains 8 can be pressed against; each two form a group, the upper pressure wheels 18 can be set in four groups, and the lower pressure wheels 19 can be set in five groups, without specific restrictions.

[0064] The conveying cavity is provided with a rotatable supporting wheel 15 to support the chain 8 in a rolling contact manner; and the turning cavity is provided with a rotatable upper pressure wheel 18 and a lower pressure wheel 19 to resist the chain 8 in a rolling contact manner to guide the turning. The rolling friction force generated between the chain 8 and the supporting wheel 15, the upper pressure wheel 18 and the lower pressure wheel 19 is smaller than the sliding friction force generated by the traditional support plate frame and the arc pressure plate, and has less wear, so it is more durable, effectively reduces the wear or chain breakage risk of the chain 8, and increases the service life.

[0065] In general, the above design makes the equipment more durable and increases its service life.

[0066] The above is an embodiment of an improved chain scraper conveyor provided in the embodiment of the present application. The following is an embodiment of an improved chain scraper conveyor provided in the embodiment of the present application. For details, please refer to Figures 1 to 4 .

[0067] Furthermore, after research, it was found that when the scraper 7 in the traditional chain scraper conveyor runs to the lower layer, it will come into contact with the bottom plate of the machine body, resulting in wear between the scraper 7 and the bottom plate due to sliding friction. In order to solve the above problem:

[0068] Two parallel and spaced direct-feeding limit plates 17 are installed at the bottom of the direct-feeding chamber; a direct-feeding slot 201 is formed between the two direct-feeding limit plates 17; the direct-feeding limit plates 17 are also used to support the endless chain 8, so that a first gap is formed between the scraper 7 extending into the direct-feeding slot 201 and the bottom of the direct-feeding slot 201. The direct-feeding limit plates 17 are used to form the direct-feeding slot 201, which can limit the movement of the scraper 7 to prevent the scraper 7 from being deviated to the left or right. At the same time, the direct-feeding limit plates 17 can support the endless chain 8 to lift the scraper 7 to a certain height, thereby ensuring that the first gap is formed between the scraper 7 and the bottom of the direct-feeding chamber, thereby solving the problem of contact and wear between the scraper 7 and the bottom of the direct-feeding chamber when the scraper 7 moves to the lower space, thereby protecting the scraper 7 and the bottom of the direct-feeding chamber.

[0069] Furthermore, two parallel and spaced-apart turning limit plates 20 are installed at the bottom of the turning chamber; a turning groove 202 is formed between the two turning limit plates 20; when the chain 8 is tightened in the turning chamber, it is close to the lower laminating wheel 19, and the bottom of the chain 8 will not contact the turning limit plate 20. Therefore, the turning limit plate 20 does not need to be paved with a wear-resistant layer 16 like the direct delivery limit plate 17. Its function is to prevent the scraper 7 from running off the track. At the same time, the turning limit plate 20 in the turning chamber is connected to the direct delivery limit plate 17 in the adjacent direct delivery chamber to prevent the scraper 7 from scratching and colliding with the direct delivery limit plate 17 at the corners.

[0070] Furthermore, a wear-resistant layer 16 is provided on the direct-feeding limit plate 17, and the wear-resistant layer 16 can protect the direct-feeding limit plate 17. The strength of the ring chain 8 is designed to be greater than the wear-resistant layer 16, making it more difficult to wear relative to the wear-resistant layer 16, further improving the durability of the overall equipment.

[0071] Furthermore, the wear-resistant layer 16 may be specifically made of a wear-resistant rubber strip, or other wear-resistant plastic materials.

[0072] The straight-feeding limit plate 17 and the turning limit plate 20 may also be made of wear-resistant plastic without limitation.

[0073] Furthermore, with regard to the rotational installation of the supporting wheel 15 , the supporting wheel 15 is sleeved on the first rotating shaft and rotates synchronously with the first rotating shaft; then the first rotating shaft is rotationally installed in the direct delivery cavity through the first bearing to realize the rotational installation setting of the supporting wheel 15 .

[0074] Furthermore, the upper pressing wheel 18 is sleeved on the second rotating shaft and can rotate freely on the second rotating shaft. The second rotating shaft is fixedly installed in the turning cavity, thereby realizing the rotating installation setting of the upper pressing wheel 18.

[0075] The lower pressing wheel 19 is sleeved on the third rotating shaft and rotates synchronously with the third rotating shaft; the third rotating shaft is rotatably installed in the turning cavity through the second bearing, thereby realizing the rotatable installation setting of the lower pressing wheel 19.

[0076] The support wheel 15, upper pressure wheel 18 and lower pressure wheel 19 of the present application can be processed and assembled through conventional profiles without welding, which is more convenient to assemble and disassemble than traditional support frames and arc-shaped pressure plates. Moreover, since the support wheel 15, upper pressure wheel 18 and lower pressure wheel 19 are installed at intervals, less material is required and the production cost is low.

[0077] Furthermore, the supporting wheel 15, the upper pressing wheel 18 and the lower pressing wheel 19 are all provided with an annular groove for the chain 8 to be movably engaged. The chain 8 can move in the annular groove and is restricted by the annular groove to prevent the chain 8 from being dislocated during operation, and the equipment runs more stably.

[0078] Further, for the main structure design, it includes at least two straight-feeding housings 4, at least one turning housing 5, a head housing 6 and a tail housing 3. Taking the design of two straight-feeding housings 4 and one turning as an example, the first straight-feeding housing 4 can be set horizontally, and the second straight-feeding housing 4 can be set at a certain angle. Under this design, the second straight-feeding housing 4 can be supported and fixed by the support legs 14 fixed by welding to achieve the inclined setting.

[0079] The inner cavity of the straight-feeding casing 4 forms a straight-feeding cavity, and the inner cavity of the turning casing 5 forms a turning cavity. The turning casing 5 is connected between two adjacent straight-feeding casings 4. The head casing 6 is connected to the head end of the first straight-feeding casing 4. The tail casing 3 is connected to the tail end of the last straight-feeding casing 4. A discharge port 13 is provided at the bottom of the head casing 6 or the first straight-feeding casing 4, and a feed port 12 is provided at the top of the last straight-feeding casing 4.

[0080] Furthermore, the transmission component design includes a driving wheel 11 , a driven wheel 1 and a driving chain 10 .

[0081] The driving wheel 11 is pivoted at one end in the conveying cavity, and the driven wheel 1 is pivoted at the other end in the conveying cavity; the endless chain 8 passes through the driving wheel 11 and the driven wheel 1, and the driving motor 9 drives the driving wheel 11 to rotate through the driving chain 10, so as to drive the endless chain 8 to move. Specifically, the endless chain 8 is assembled with the driven wheel 1, the supporting wheel 15, the upper layer pressing wheel 18, and the lower layer pressing wheel 19 and surrounds the closed loop.

[0082] The conveying device also includes a tensioning screw 2 , which is installed at the tail of the machine and connected to the driven wheel 1 , and is used to drive the driven wheel 1 to perform tensioning movement to adjust the tension of the endless chain 8 .

[0083] The driven wheel 1, tensioning screw 2, tail casing 3, direct feeding casing 4, turning casing 5, head casing 6, scraper 7, chain 8, driving wheel 11, feed port 12, discharge port 13, support leg 14, support wheel 15, upper pressure wheel 18 and lower pressure wheel 19 in the present application can all be made of carbon steel material.

[0084] The working process of this application is as follows:

[0085] Start the drive motor 9 to drive the drive chain 10 and thus drive the drive wheel 11;

[0086] The driving wheel 11 rotates counterclockwise to drive the chain 8, and the scraper 7 located at the upper part of the chain 8 moves toward the tail casing 3, and the scraper 7 located at the lower part moves toward the head casing 6; the material enters the direct feeding trough 201 through the feed port 12, and the material is pushed toward the head casing 6 by the scraper 7 in the direct feeding trough 201 and comes out at the discharge port 13.

[0087] The chain 8 is turned at an angle from the horizontal direction to an inclined conveying direction under the action of the upper pressing wheel 18 and the lower pressing wheel 19; the material moves in a straight line on the straight conveying trough 201, transitions tangentially to the turning trough 202 to move in an arc line, and then transitions tangentially to the straight conveying trough 201 to move in a straight line until the material is conveyed to the discharge port 13 for continuous output.

[0088] The above is a detailed introduction to an improved chain scraper conveyor provided by the present application. For a person skilled in the art, according to the idea of ​​the embodiments of the present application, there may be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. An improved chain scraper conveyor, characterized in that: It includes a main structure and a conveying device; A conveying cavity is provided in the main structure; The conveying chamber is composed of at least two straight conveying chambers and at least one turning chamber; The turning chamber is arranged between two adjacent straight-feeding chambers; The conveying device comprises a driving motor (9), a transmission assembly, a scraper (7), and an endless chain (8) connected to the scraper (7) and used to pull the scraper (7); The driving motor (9) drives the endless chain (8) to move via the transmission assembly; The bottom of the direct delivery chamber is provided with a direct delivery groove (201) for the scraper (7) to extend into to push the material; The bottom of the turning chamber is provided with a turning groove (202) for the scraper (7) to extend into to push the material and connected to the straight feeding groove (201); The upper space of the direct delivery chamber is provided with a plurality of rotatable supporting wheels (15) arranged in an array along the delivery direction; The supporting wheel (15) is used to support the endless chain (8); The upper space of the turning chamber is provided with a plurality of rotatable upper pressure wheels (18) arranged in an array along the turning direction; The lower space of the turning chamber is provided with a plurality of rotatable lower pressure wheels (19) arranged in an array along the turning direction; The upper pressure wheel (18) and the lower pressure wheel (19) are used to press the endless chain (8).

2. The improved chain scraper conveyor according to claim 1, characterized in that: Two parallel and spaced direct-feeding limiting plates (17) are installed at the bottom of the direct-feeding chamber; The direct-feeding slot (201) is formed between the two direct-feeding limiting plates (17); The direct-feed limiting plate (17) is also used to support the endless chain (8), so that a first gap is formed between the scraper (7) extending into the direct-feeding trough (201) and the bottom of the direct-feeding trough (201).

3. The improved chain scraper conveyor according to claim 2, characterized in that: Two parallel and spaced-apart turning limit plates (20) are installed at the bottom of the turning chamber; The turning groove (202) is formed between the two turning limit plates (20); The turning limit plate (20) in the turning chamber is connected to the direct delivery limit plate (17) in the adjacent direct delivery chamber.

4. The improved chain scraper conveyor according to claim 3 is characterized in that: The direct-feeding limiting plate (17) is provided with a wear-resistant layer (16).

5. The improved chain scraper conveyor according to claim 4, characterized in that: The wear-resistant layer (16) is a wear-resistant rubber strip.

6. The improved chain scraper conveyor according to claim 1, characterized in that: The supporting wheel (15) is sleeved on the first rotating shaft and rotates synchronously with the first rotating shaft; The first rotating shaft is rotatably mounted on the direct delivery cavity through a first bearing.

7. An improved chain scraper conveyor according to claim 6, characterized in that: The upper layer pressing wheel (18) is sleeved on the second rotating shaft and can rotate freely on the second rotating shaft; The second rotating shaft is fixedly mounted on the turning cavity; The lower layer pressing wheel (19) is sleeved on the third rotating shaft and rotates synchronously with the third rotating shaft; The third rotating shaft is rotatably mounted in the turning cavity through a second bearing.

8. The improved chain scraper conveyor according to claim 1, characterized in that: The supporting wheel (15), the upper pressure wheel (18) and the lower pressure wheel (19) are all provided with an annular groove for the ring chain (8) to be movably inserted into.

9. The improved chain scraper conveyor according to claim 1, characterized in that: The main structure comprises at least two straight-feed casings (4), at least one turning casing (5), a head casing (6) and a tail casing (3); The inner cavity of the direct-feeding housing (4) forms the direct-feeding cavity; The inner cavity of the turning housing (5) forms the turning cavity; The turning casing (5) is connected between two adjacent straight-feed casings (4); The head housing (6) is connected to the head end of the first direct-feed housing (4); The tail housing (3) is connected to the tail end of the last direct delivery housing (4); The head casing (6) or the first direct-feed casing (4) is provided with a discharge port (13) at the bottom; The top of the last direct-feeding casing (4) is provided with a feed inlet (12).

10. The improved chain scraper conveyor according to claim 1, characterized in that: The transmission assembly comprises a driving wheel (11), a driven wheel (1) and a driving chain (10); The driving wheel (11) is pivotally connected to one end of the conveying cavity; The driven wheel (1) is pivotally connected to the other end of the conveying cavity; The endless chain (8) passes around the driving wheel (11) and the driven wheel (1); The driving motor (9) drives the driving wheel (11) to rotate via a driving chain (10).

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