Adjustable chain wheel structure for roller screen

Abstract

The utility model provides an adjustable chain wheel structure for a roller screen. The adjustable chain wheel structure comprises an adjustable tensioning mechanism, a chain wheel adjusting mechanism, a chain, a fixed chain wheel, an adjustable chain wheel and two optical shafts. The two optical shafts are arranged in parallel and used for installing the screen piece, the end of one optical shaft is used for installing the fixed chain wheel, the end of the other optical shaft is connected with the adjustable chain wheel through the chain wheel adjusting mechanism, and the fixed chain wheel is connected with the adjustable chain wheel through a chain; the chain wheel adjusting mechanism comprises a taper sleeve structure and a locking mechanism, the outer wall of the taper sleeve structure is of a conical structure, the taper sleeve structure is fixedly connected with the chain wheel structure through the locking mechanism, and the taper sleeve structure is connected with the optical shaft. According to the adjustable chain wheel structure for the roller screen, the problems that a chain wheel cannot be adjusted and screen seams are difficult to adjust due to the fact that a roller screen in the prior art is of a multi-split chain transmission structure are solved.

Description

Technical Field

[0001] This utility model belongs to the field of roller screen technology, and in particular relates to an adjustable sprocket structure for roller screens. Background Technology

[0002] A roller screen is a device used for material screening, primarily separating materials by particle size through a rotating screen cylinder. Its working principle is that after the material enters the screen body, the centrifugal force generated by the rotation of the screen shaft propels the material forward, and the intersecting screen gaps between the two screen plates separate materials of different particle sizes. It is particularly suitable for processing large particles, wet or sticky materials, and is widely used in mining, coal, and building materials industries. Roller screens have a simple structure, high efficiency, and can effectively reduce overall machine power consumption and minimize clogging problems.

[0003] Because the roller screen in the relevant technology has a one-to-many chain drive structure, there are problems such as the sprockets not being adjustable and the difficulty in adjusting the screen gap. If the parallelism of the chain drive chains between the screen gap adjustment shafts cannot be guaranteed, chain jamming and chain breakage will occur during later operation, which will seriously affect the life of the chain and affect the normal use of the entire equipment. Summary of the Invention

[0004] In view of this, the present invention aims to at least partially solve one of the related technical problems.

[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0006] An adjustable sprocket structure for a roller screen includes an adjustable tensioning mechanism, a sprocket adjustment mechanism, a chain, a fixed sprocket, an adjustable sprocket, and two optical shafts;

[0007] Two optical axes are arranged side by side. The optical axes are used to install screen plates. One end of the optical axis is used to install the fixed sprocket. The other end of the optical axis is connected to the adjustable sprocket through the sprocket adjustment mechanism. The fixed sprocket and the adjustable sprocket are connected by the chain.

[0008] The sprocket adjustment mechanism includes a conical sleeve structure and a locking mechanism. The outer wall of the conical sleeve structure is conical. The conical sleeve structure is connected and fixed to the sprocket structure through the locking mechanism. The conical sleeve structure is connected to the optical axis.

[0009] Furthermore, the tapered sleeve structure is provided with a slot, and the locking mechanism includes multiple threaded holes and multiple expansion bolts. The multiple threaded holes are evenly distributed on the outer wall of the tapered sleeve, and each threaded hole is provided with a corresponding expansion bolt.

[0010] Furthermore, the sprocket adjustment mechanism also includes an adjustment sleeve, the conical sleeve structure is connected to the optical axis through the adjustment sleeve, the inner wall of the conical sleeve structure is keyed to the adjustment sleeve, and the adjustment sleeve is threadedly engaged with the optical axis.

[0011] Furthermore, the angle between the outer wall of the conical sleeve structure and the horizontal line is α, where α is 3-6°.

[0012] Furthermore, it also includes a lubrication mechanism, which includes a brush and an oil reservoir. The oil outlet of the oil reservoir is connected to an oil delivery pipe via a solenoid valve. The oil delivery pipe is connected to the brush, which can evenly apply lubricating oil to the surface of the chain.

[0013] Furthermore, the adjustable tensioning mechanism includes a support frame, a push rod, a push plate, a support frame, a tensioning block, a compression spring, and two lifting mechanisms;

[0014] The support frame is located on the front end face of the support frame. The middle part of the support frame is hollow. The top of the push rod is connected to the tensioning block, which is used to tension the chain.

[0015] The push plate and the compression spring are both disposed within the support frame. The push plate is disposed on the push rod. One end of the compression spring abuts against the push plate, and the other end of the compression spring abuts against the bottom of the support frame.

[0016] Two lifting mechanisms are symmetrically arranged on the left and right sides of the support frame, and the lifting mechanisms are used to adjust the height of the support frame.

[0017] Furthermore, the lifting mechanism includes an adjusting bolt and a locking nut. The adjusting bolt is connected and fixed to the drive beam of the screen shaft housing through the locking nut. The support frame has a protrusion on its side, and the top of the adjusting bolt is directly opposite the protrusion.

[0018] Compared with the prior art, the adjustable sprocket structure for roller screens described in this utility model has the following advantages:

[0019] 1. Traditional roller screens typically employ a one-to-many chain drive structure with non-adjustable sprockets, making screen gap adjustment difficult and hindering precise control of screening efficiency. The sprocket adjustment mechanism, by introducing a conical sleeve structure and locking mechanism, enables sprocket position adjustment, thereby precisely adjusting chain tension and screen gap size to ensure the screen gap is always in optimal working condition and improve screening accuracy. In traditional chain drives, the inability to adjust the sprockets easily leads to chain misalignment, causing chain jamming and breakage during operation, severely impacting equipment operation. The sprocket adjustment mechanism, through conical sleeve adjustment and the threaded engagement of the adjusting sleeve with the optical shaft, precisely adjusts the sprocket position, ensuring the chain remains parallel during operation, reducing chain jamming and breakage, and enhancing equipment stability and reliability.

[0020] 2. The lubrication mechanism continuously lubricates key components such as chains, preventing jamming or excessive wear caused by insufficient lubrication. This ensures long-term efficient equipment operation, reduces downtime due to equipment failure or maintenance, and improves production efficiency. The automatic lubrication function of the lubrication mechanism reduces the frequency and labor costs of manual lubrication. Through the cooperation of the oil tank, solenoid valve, and brushes, it ensures that lubricating oil is evenly applied to the surface of components such as chains, reducing the complexity of manual operation and the possibility of errors, thus lowering maintenance and labor costs.

[0021] 3. The sprocket adjustment mechanism employs adjusting bolts, locking nuts, and a lifting mechanism, making adjustments during operation simpler and faster. Adjustments to chain tension and sprocket position are particularly convenient, reducing the complex operations required in traditional equipment and lowering the difficulty of manual intervention. Simultaneously, the lubrication system design reduces the need for manual lubrication, enhancing the equipment's automation level. Attached Figure Description

[0022] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0023] Figure 1 This is a schematic diagram of an adjustable sprocket structure for a roller screen according to an embodiment of the present invention;

[0024] Figure 2 This is a side view of an adjustable sprocket structure for a roller screen according to an embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the conical sleeve structure described in an embodiment of the present utility model;

[0026] Figure 4 This is a cross-sectional view of the conical sleeve structure described in an embodiment of the present utility model;

[0027] Figure 5 This is a three-dimensional structural diagram of the conical sleeve structure described in an embodiment of the present utility model.

[0028] Explanation of reference numerals in the attached figures:

[0029] 100. Screen plate; 110. Bearing housing; 210. Brush; 220. Oil pipe; 230. Solenoid valve; 240. Oil storage tank; 300. Chain; 400. Adjustable tensioning mechanism; 410. Tensioning block; 420. Push rod; 430. Lifting mechanism; 440. Compression spring; 510. Tapered sleeve structure; 511. Threaded hole; 520. Optical shaft. Detailed Implementation

[0030] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0031] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0034] An adjustable sprocket structure for a roller screen, such as Figure 1As shown, it includes an adjustable tensioning mechanism 400, a sprocket adjustment mechanism, a chain 300, a fixed sprocket, an adjustable sprocket, and two optical shafts 520; the two optical shafts 520 are arranged side by side, the optical shafts 520 are used to install the screen plate 100, the end of one optical shaft 520 is used to install the fixed sprocket, and the end of the other optical shaft 520 is connected to the adjustable sprocket through the sprocket adjustment mechanism. The fixed sprocket and the adjustable sprocket are connected by the chain 300.

[0035] The sprocket adjustment mechanism includes a conical sleeve structure 510 and a locking mechanism. The outer wall of the conical sleeve structure 510 is conical. The conical sleeve structure 510 is connected and fixed to the sprocket structure through the locking mechanism. The conical sleeve structure 510 is connected to the optical shaft 520.

[0036] Traditional roller screens typically employ a one-to-many chain drive structure with non-adjustable sprockets, making screen gap adjustment difficult and hindering precise control of screening efficiency. The sprocket adjustment mechanism, by introducing a conical sleeve structure 510 and a locking mechanism, enables sprocket position adjustment, thereby precisely adjusting the tension of the chain 300 and the screen gap size. This ensures the screen gap is always in optimal working condition, improving screening accuracy. In traditional chain drives, the inability to adjust the sprockets easily leads to chain misalignment, causing chain jamming and breakage during operation, severely impacting equipment performance. The sprocket adjustment mechanism, through conical sleeve adjustment and the threaded engagement of the adjusting sleeve with the optical shaft 520, precisely adjusts the sprocket position, ensuring the chain 300 remains parallel during operation, reducing chain jamming and breakage, and enhancing equipment stability and reliability.

[0037] The tapered sleeve structure 510 has a slot, and the locking mechanism includes multiple threaded holes 511 and multiple expansion bolts. The multiple threaded holes 511 are evenly distributed on the outer wall of the tapered sleeve, and each threaded hole 511 corresponds to an expansion bolt. In this embodiment, the sprocket adjustment mechanism also includes an adjusting sleeve. The tapered sleeve structure 510 is connected to the optical shaft 520 through the adjusting sleeve. The inner wall of the tapered sleeve structure 510 is keyed to the adjusting sleeve, and the adjusting sleeve is threadedly engaged with the optical shaft 520. Figure 4 As shown, the angle between the outer wall of the conical sleeve structure 510 and the horizontal line is α, where α is 4°.

[0038] The system also includes a lubrication mechanism, comprising a brush 210 and an oil reservoir 240. The oil outlet of the oil reservoir 240 is connected to an oil supply pipe 220 via a solenoid valve 230. The oil supply pipe 220 is connected to the brush 210, which evenly applies lubricating oil to the surface of the chain 300. This lubrication mechanism continuously provides lubrication to key components such as the chain 300, preventing parts from jamming or excessive wear due to lack of lubrication. It ensures long-term efficient operation of the equipment, reduces downtime due to equipment failure or maintenance, and improves production efficiency. The automatic lubrication function of the lubrication mechanism reduces the frequency and labor costs of manual lubrication. Through the cooperation of the oil reservoir 240, solenoid valve 230, and brush 210, lubricating oil is evenly applied to the surface of components such as the chain 300, reducing the complexity of manual operation and the possibility of errors, thus lowering maintenance and labor costs.

[0039] The adjustable tensioning mechanism 400 includes a support frame, a push rod 420, a push plate, a support frame, a tensioning block 410, a pressure spring 440, and two lifting mechanisms 430. The support frame is located on the front end face of the support frame, and the middle of the support frame is hollow. The top of the push rod 420 is connected to the tensioning block 410, which is used to tension the chain 300. The push plate and the pressure spring 440 are both located inside the support frame. The push plate is mounted on the push rod 420, and one end of the pressure spring 440 abuts against the push plate, while the other end abuts against the bottom of the support frame. The two lifting mechanisms 430 are symmetrically arranged on the left and right sides of the support frame and are used to adjust the height of the support frame. The lifting mechanism 430 includes an adjusting bolt and a locking nut. The adjusting bolt is connected and fixed to the drive beam of the screen shaft housing through the locking nut. A protrusion is provided on the side of the support frame, and the top of the adjusting bolt is directly opposite the protrusion. The sprocket adjustment mechanism employs adjusting bolts, locking nuts, and a lifting mechanism 430, making adjustments during operation simpler and faster. Adjustments to the chain tension (300) and sprocket position are particularly convenient, reducing the complexity of operations required in traditional equipment and lowering the difficulty of manual intervention. Simultaneously, the lubrication system design reduces the need for manual lubrication, enhancing the equipment's automation level.

[0040] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An adjustable sprocket structure for a roller screen, characterized by: It includes an adjustable tensioning mechanism (400), a sprocket adjustment mechanism, a chain (300), a fixed sprocket, an adjustable sprocket, and two optical shafts (520); the two optical shafts (520) are arranged side by side, the optical shafts (520) are used to install the screen plate (100), the end of one optical shaft (520) is used to install the fixed sprocket, and the end of the other optical shaft (520) is connected to the adjustable sprocket through the sprocket adjustment mechanism. The fixed sprocket and the adjustable sprocket are connected by the chain (300); The sprocket adjustment mechanism includes a conical sleeve structure (510) and a locking mechanism. The outer wall of the conical sleeve structure (510) is conical. The conical sleeve structure (510) is connected and fixed to the sprocket structure through the locking mechanism. The conical sleeve structure (510) is connected to the optical axis (520).

2. An adjustable sprocket arrangement for a roller screen according to claim 1, characterized in that: The tapered sleeve structure (510) is provided with a slot, and the locking mechanism includes multiple threaded holes (511) and multiple expansion bolts. The multiple threaded holes (511) are evenly distributed on the outer wall of the tapered sleeve, and each threaded hole (511) is provided with a corresponding expansion bolt.

3. An adjustable sprocket arrangement for a roller screen according to claim 1, wherein: The sprocket adjustment mechanism also includes an adjustment sleeve. The conical sleeve structure (510) is connected to the optical axis (520) through the adjustment sleeve. The inner wall of the conical sleeve structure (510) is keyed to the adjustment sleeve. The adjustment sleeve is threadedly engaged with the optical axis (520).

4. An adjustable sprocket arrangement for a roller screen according to claim 1, wherein: The angle between the outer wall of the conical sleeve structure (510) and the horizontal line is α, where α is 3-6°.

5. An adjustable sprocket arrangement for a roller screen according to any one of claims 1-4, characterized in that: It also includes a lubrication mechanism, which includes a brush (210) and an oil reservoir (240). The oil outlet of the oil reservoir (240) is connected to an oil delivery pipe (220) via a solenoid valve (230). The oil delivery pipe (220) is connected to the brush (210). The brush (210) can evenly apply lubricating oil to the surface of the chain (300).

6. An adjustable sprocket arrangement for a roller screen according to claim 5, wherein: The adjustable tensioning mechanism (400) includes a support frame, a push rod (420), a push plate, a support frame, a tensioning block (410), a compression spring (440), and two lifting mechanisms (430); The support frame is disposed on the front end face of the support frame. The middle part of the support frame is hollow. The top of the push rod (420) is connected to the tension block (410). The tension block (410) is used to tension the chain (300). The push plate and the compression spring (440) are both disposed in the support frame. The push plate is disposed on the push rod (420). One end of the compression spring (440) abuts against the push plate, and the other end of the compression spring (440) abuts against the bottom of the support frame. Two lifting mechanisms (430) are symmetrically arranged on the left and right sides of the support frame, and the lifting mechanisms (430) are used to adjust the height of the support frame.

7. An adjustable sprocket arrangement for a roller screen according to claim 6, wherein: The lifting mechanism (430) includes an adjusting bolt and a locking nut. The adjusting bolt is connected and fixed to the drive beam of the screen shaft housing through the locking nut. The support frame has a protrusion on its side, and the top of the adjusting bolt is directly opposite the protrusion.

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