Sand gravel screening device

Abstract

The utility model discloses a sand gravel screening device which comprises a shell. The at least two screening assemblies comprise a first screening assembly and a second screening assembly which are vertically arranged at intervals, the first screening assembly is obliquely arranged in the shell in the left-upper-right-lower direction, the lower end of the first screening assembly extends out of the shell, the second screening assembly is obliquely arranged in the shell in the right-upper-left-lower direction, and the lower end of the second screening assembly extends out of the shell; the screening assembly comprises a screening frame, the bottom face of the screening frame is of a screen structure, and the screening frame is connected with the shell through supporting springs. The vibrating roller is arranged below the high end of the screening frame and makes contact with the high end of the screening frame. The brush roller is arranged on one side of the vibrating roller and is driven by a driving assembly to reciprocate up and down along the bottom surface of the sub-frame; and the motor is arranged outside the shell, and an output shaft of the motor extends into the shell and is selectively connected with the vibrating roller or the driving assembly so as to provide a power source for the vibrating roller or the driving assembly. The sand gravel multi-stage screening device has the advantages of being capable of achieving multi-stage screening of sand gravel, high in screening efficiency and the like.

Description

Technical Field

[0001] The utility model relates to the field of building construction equipment, and more specifically, to a sand and gravel screening device. Background Art

[0002] During the construction process, it is usually necessary to screen gravel of different particle sizes to meet different usage requirements. For example, gravel with larger particle sizes is needed for laying the foundation, while gravel with smaller particle sizes is needed for making concrete.

[0003] In the prior art, screening of gravel is generally performed by a screening device. For example, the utility model patent with the authorization announcement number CN219765995U discloses a gravel screening device, which achieves the screening of gravel by setting a vibrator under the screen. However, in the above device, the screen is a single-layer screen, which can only achieve the separation of gravel into two levels of oversize and undersize, and no screen cleaning mechanism is provided. When the screen is blocked, it needs to be cleaned manually. Utility Model Content

[0004] An object of the utility model is to provide a sand and gravel screening device to at least solve the above problems.

[0005] In order to achieve the purpose and other advantages of the utility model, a sand and gravel screening device is provided, comprising:

[0006] A shell body, with a feed inlet at the top and a first discharge outlet at the bottom;

[0007] At least two screening assemblies, including a first screening assembly and a second screening assembly spaced apart from each other, wherein the first screening assembly is arranged in the housing in an upper left and lower right manner, and the lower end thereof extends out of the housing through a second discharge port arranged on the housing, and the second screening assembly is arranged in the housing in an upper right and lower left manner, and the lower end thereof extends out of the housing through a third discharge port arranged on the housing; wherein,

[0008] The screening component includes a screening frame, whose top and lower ends are open and whose bottom is a screen structure, wherein the high end and the low end of the screening frame are respectively connected to the shell through supporting springs; a vibration roller, which is arranged below the high end of the screening frame and in contact with it; a brush roller, which is arranged on the side of the vibration roller away from the high end, and the brush roller is driven by the driving component to reciprocate up and down along the bottom surface of the screening frame; a motor, which is arranged outside the shell, and the output shaft of the motor extends into the shell and is selectively connected to the vibration roller or the driving component to provide a power source for the vibration roller or the driving component.

[0009] Preferably, in the sand and gravel screening device, the vibrating roller is rotatably connected to the end of the output shaft; the driving assembly is a sprocket transmission mechanism, and the driving wheel of the driving assembly is rotatably connected to the output shaft; a connecting sleeve is provided on the output shaft, the connecting sleeve is arranged between the driving wheel and the vibrating roller, and is spline-connected to the output shaft, and the connecting sleeve is detachably connected to either the driving wheel or the vibrating roller.

[0010] Preferably, in the sand and gravel screening device, a plurality of first holes are provided at intervals on the end surface of the vibrating roller close to the connecting sleeve, a plurality of second holes are provided at intervals on the end surface of the driving wheel close to the connecting sleeve, a plurality of first plug rods are provided at intervals on the end surface of the connecting sleeve close to the vibrating roller, the plurality of first plug rods are matingly plugged into the plurality of first holes, a plurality of second plug rods are provided at intervals on the end surface of the connecting sleeve close to the driving wheel, the plurality of second plug rods are matingly plugged into the plurality of second holes.

[0011] Preferably, in the gravel screening device, a first electromagnet is provided on the end surface of the connecting sleeve close to the vibrating roller, and the first electromagnet is magnetically attracted to the end surface of the vibrating roller; a second electromagnet is provided on the end surface of the connecting sleeve close to the driving wheel, and the second electromagnet is magnetically attracted to the end surface of the driving wheel; the first electromagnet and the second electromagnet are not energized at the same time.

[0012] Preferably, in the gravel screening device, the driving assembly includes a driving wheel, a driven wheel and a chain, a connecting plate is fixedly provided on the chain, one end of the brush roller is connected to the connecting plate via a first connecting shaft, and the other end is slidably engaged with a limiting groove provided on the inner wall of the shell via a second connecting shaft, and the limiting groove is parallel to the chain.

[0013] Preferably, in the gravel screening device, the first connecting shaft is rotatably connected to the brush roller, a rack is fixedly provided at the bottom of the limiting groove along its length direction, and a gear is fixedly provided on the second connecting shaft, and the gear is meshed with the rack.

[0014] Preferably, in the sand and gravel screening device, ends of the front and rear side walls of the screening frame extending out of the shell are both inclined surfaces inclined toward the inside of the shell.

[0015] The utility model includes at least the following beneficial effects: by arranging at least two screening components at intervals in the upper and lower parts of the shell body, multi-level grading of sand and gravel according to different screen mesh apertures can be achieved, the grading fineness of sand and gravel can be improved, and different construction requirements can be met; by arranging a vibration roller and a brush roller below the high end of the screening frame, and arranging a motor outside the shell body, and the motor selectively provides a power source for the driving components of the vibration roller and the brush roller, so that the vibration roller and the brush roller can move alternately under the drive of the motor, so as to realize screening and screen cleaning cycles, and effectively improve the screening efficiency.

[0016] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a cross section of a sand and gravel screening device according to an embodiment of the utility model;

[0018] Figure 2 yes Figure 1 A magnified view of the part A in the middle;

[0019] Figure 3 yes Figure 1 A magnified view of the part B in the middle;

[0020] Figure 4 It is a structural schematic diagram of another cross section of a sand and gravel screening device according to an embodiment of the utility model;

[0021] Figure 5 The utility model is a schematic diagram of the connection structure of a connecting sleeve, a driving wheel and a vibrating roller in one embodiment. DETAILED DESCRIPTION

[0022] The present invention will be further described in detail below in conjunction with the embodiments and drawings so that those skilled in the art can implement the invention with reference to the description.

[0023] It should be understood that the terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0024] It should be noted that the experimental methods described in the following embodiments are conventional methods unless otherwise specified, and the reagents and materials are commercially available unless otherwise specified; in the description of the present invention, the terms "lateral", "longitudinal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0025] like Figure 1 to Figure 5 As shown, an embodiment of the utility model provides a sand and gravel screening device, comprising:

[0026] The housing 1 has a feed inlet 2 at the top and a first discharge outlet 3 at the bottom;

[0027] At least two screening components, including a first screening component 4 and a second screening component 5 spaced apart from each other, wherein the first screening component 4 is arranged in the housing 1 with an upper left angle and a lower right angle, and the lower end thereof extends out of the housing 1 through a second discharge port 6 arranged on the housing 1, and the second screening component 5 is arranged in the housing 1 with an upper right angle and a lower left angle, and the lower end thereof extends out of the housing 1 through a third discharge port 7 arranged on the housing 1; wherein,

[0028] The screening component includes a screening frame 8, the top and bottom of which are open, and the bottom of which is a screen structure, wherein the high end and the low end of the screening frame 8 are respectively connected to the shell 1 via support springs 9; a vibration roller 10, which is arranged below the high end of the screening frame 8 and in contact with it; a brush roller 11, which is arranged on the side of the vibration roller 10 away from the high end, and the brush roller 11 is driven by the driving component to reciprocate up and down along the bottom of the screening frame 8; a motor 12, which is arranged outside the shell 1, and the output shaft of the motor 12 extends into the shell 1 and is selectively connected to the vibration roller 10 or the driving component to provide a power source for the vibration roller 10 or the driving component.

[0029] In the above embodiment, the sand and gravel screening device includes a shell 1 and at least two screening components arranged in the shell 1. The shell 1 is preferably a hollow rectangular parallelepiped structure, the top of the shell 1 is provided with a feed port 2, the feed port 2 is provided with a feed hopper 28, the bottom of the shell 1 is condensed inward and downward to form a funnel portion, the bottom of the funnel portion is provided with a first discharge port 3, and the four corners of the bottom of the shell 1 are also provided with columns 29, and the shell 1 is supported on the ground or a construction platform by the columns 29. At least two screening components, such as Figure 1As shown, it includes a first screening component 4 and a second screening component 5 which are arranged at intervals from top to bottom. The first screening component 4 is arranged in a housing 1 with an upper left angle and a lower right angle, and the lower end extends out of the housing 1 through a second discharge port 6 arranged on the housing 1. The feed port 2 is arranged on the high side of the first screening component 4; the second screening component 5 is arranged in a housing 1 with an upper right angle and a lower left angle, and the lower end extends out of the housing 1 through a third discharge port 7 arranged on the housing 1. The first screening component 4 and the second screening component 5 have the same structure, and the only difference is that the mesh aperture of the first screening component 4 is larger than the mesh aperture of the second screening component 5. Specifically, the structures of the first screening component 4 and the second screening component 5 include a screening frame 8, the top surface and the lower end of which are open, and the bottom surface is a screen structure, the front and rear side walls of the screening frame 8 and the side wall at the high end are surrounded to form a fence structure, the high end and the low end of the screening frame 8 are respectively connected to the housing 1 through a support spring 9, and the support spring 9 enables the screening frame 8 to vibrate up and down under the action of a vibration roller 10; the vibration roller 10 is arranged below the high end of the screening frame 8 and contacts therewith, and the cross section of the vibration roller 10 is a cam structure, and the vibration roller 10 It can rotate driven by the motor 12 to drive the screening frame 8 to vibrate up and down; the brush roller 11 is arranged on the side of the vibration roller 10 away from the high end of the screening frame 8, and the brush roller 11 is driven by the driving component to reciprocate up and down along the bottom surface of the screening frame 8 to clean the screen and avoid clogging of the screen; the motor 12 is arranged outside the shell 1, and the output shaft of the motor 12 extends into the shell 1 and is selectively connected to the vibration roller 10 and one of the driving components. The motor 12 provides a power source for the vibration roller 10 or the driving component connected thereto.

[0030] When in use, first connect the motor 12 to the vibration roller 10, the vibration roller 10 drives the screening frame 8 to vibrate up and down, and then add the sand and gravel to be screened into the feed hopper 28. After the sand and gravel to be screened are screened by the first screening component 4 and the second screening component 5, the sand and gravel of different particle size levels are discharged from the shell 1 through the third discharge port, the second discharge port and the first discharge port respectively. When the screening device runs for a preset time or the screen is blocked, connect the motor 12 to the driving component, and the driving component drives the brush roller 11 to reciprocate up and down along the bottom surface of the screening frame 8 to clean the screen, so as to achieve screen regeneration and improve screening efficiency.

[0031] The utility model arranges at least two screening components at intervals in the upper and lower parts of a shell body to realize gradient grading of sand and gravel according to different screen mesh apertures, thereby improving the grading fineness of sand and gravel and meeting different construction requirements; a vibration roller and a brush roller are arranged below the high end of the screening frame, a motor is arranged outside the shell body, and one of the motors provides a power source for the driving components of the vibration roller and the brush roller, so that the vibration roller and the brush roller can move alternately under the drive of the motor, thereby realizing screening and screen cleaning cycles and effectively improving the screening efficiency.

[0032] In another embodiment, in the gravel screening device, the vibrating roller 10 is rotatably connected to the end of the output shaft; the driving assembly is a sprocket transmission mechanism, and the driving wheel 13 of the driving assembly is rotatably connected to the output shaft; a connecting sleeve 14 is sleeved on the output shaft, and the connecting sleeve 14 is arranged between the driving wheel 13 and the vibrating roller 10 and is spline-connected to the output shaft, and the connecting sleeve 14 is detachably connected to either the driving wheel 13 or the vibrating roller 10.

[0033] The above embodiment lists an alternative connection method of the motor 12, the vibration roller 10 and the driving assembly. The two ends of the vibration roller 10 are respectively connected to the ends of the output shaft of the motor 12 and the inner wall of the shell 1 through bearings, and the output shaft of the motor 12 is also connected to the front side wall of the shell 1 through bearings; the driving assembly is a sprocket transmission structure, including a driving wheel 13, a driven wheel 21 and a chain 22, the driving wheel 13 is sleeved on the output shaft and connected through bearings; a connecting sleeve 14 is provided between the driving wheel 13 and the vibration roller 10, the connecting sleeve 14 is sleeved on the output shaft and splined therewith, so that the connecting sleeve 14 can move along the axial direction of the output shaft and can rotate synchronously with the output shaft, and one of the two ends of the connecting sleeve can be detachably connected to the end face of the driving wheel 13 or the vibration roller 10, and the detachable method includes but is not limited to plug-in, when the connecting sleeve 14 is connected to the driving wheel 13, the motor 12 is connected to the driving assembly to provide a power source for the driving wheel 13, and when the connecting sleeve 14 is connected to the vibration roller 10, the motor 12 is connected to the vibration roller 10 to provide a power source for the vibration roller 10.

[0034] In another embodiment, in the gravel screening device, a plurality of first plug holes 15 are provided at intervals on the end surface of the vibration roller 10 close to the connecting sleeve 14, a plurality of second plug holes 16 are provided at intervals on the end surface of the driving wheel 13 close to the connecting sleeve 14, a plurality of first plug rods 17 are provided at intervals on the end surface of the connecting sleeve 14 close to the vibration roller 10, and the plurality of first plug rods 17 are plugged in with the plurality of first plug holes 15, and a plurality of second plug rods 18 are provided at intervals on the end surface of the connecting sleeve 14 close to the driving wheel 13, and the plurality of second plug rods 18 are plugged in with the plurality of second plug holes 16.

[0035] The above embodiment lists a detachable connection method between the connecting sleeve and the driving wheel 13 or the vibrating roller 10, that is, plugging through the plug rod and the plug hole, such as Figure 5 As shown, when the connecting sleeve 14 moves to the right so that the first plug rod 17 is inserted into the first plug hole 15, the connecting sleeve is connected to the vibration roller 10, and at this time, the second plug rod is separated from the second plug hole. When the connecting sleeve 14 moves to the left so that the second plug rod is inserted into the first plug hole, the connecting sleeve is connected to the driving wheel 13, and at this time, the first plug rod is separated from the first plug hole.

[0036] In another embodiment, in the gravel screening device, a first electromagnet 19 is provided on the end surface of the connecting sleeve 14 close to the vibrating roller 10, and the first electromagnet 19 is magnetically attracted to the end surface of the vibrating roller 10; a second electromagnet 20 is provided on the end surface of the connecting sleeve 14 close to the driving wheel 13, and the second electromagnet 20 is magnetically attracted to the end surface of the driving wheel 13; the first electromagnet 19 and the second electromagnet 20 are not energized at the same time.

[0037] The above embodiment lists another detachable connection method between the connecting sleeve and the driving wheel 13 or the vibrating roller 10, that is, the electromagnetic magnet is attracted, such as Figure 5 As shown, when the first electromagnet 19 is energized (at this time, the second electromagnet 20 is de-energized), the first electromagnet 19 and the vibration roller 10 are magnetically attracted, and the connecting sleeve 14 moves to the right until the first electromagnet 19 and the end surface of the vibration roller 10 are attracted, and the connecting sleeve 14 is connected to the vibration roller 10. When the second electromagnet 20 is energized (at this time, the first electromagnet 19 is de-energized), the second electromagnet 20 and the driving wheel 13 are magnetically attracted, and the connecting sleeve 14 moves to the left until the second electromagnet 20 and the end surface of the driving wheel 13 are attracted, and the connecting sleeve 14 is connected to the driving wheel 13.

[0038] Furthermore, a conductive slip ring 30 is sleeved on the middle part of the connecting sleeve 14, and the conductive slip ring 30 is electrically connected to the first electromagnet 19 and the second electromagnet 20 respectively to prevent the electric wires from being torsionally damaged.

[0039] In another embodiment, the gravel screening device, the driving assembly includes a driving wheel 13, a driven wheel 21 and a chain 22, the chain 22 is fixedly provided with a connecting plate 23, one end of the brush roller 11 is connected to the connecting plate 23 through a first connecting shaft, and the other end is slidably engaged with a limiting groove 25 provided on the inner wall of the shell 1 through a second connecting shaft, and the limiting groove 25 is parallel to the chain 22.

[0040] The above embodiment lists a specific connection structure of a driving assembly and a brush roller 11. The driving assembly includes a driving wheel 13, a driven wheel 21 and a chain 22. The driving wheel 13 is rotatably sleeved on the output shaft of the motor 12. The driven wheel 21 is arranged below the lower end of the screening frame 8. A driven wheel shaft is fixed on the driven wheel 21. The driven wheel shaft is rotatably connected to the front side wall of the housing 1 through a bearing. The two ends of the chain 22 are respectively sleeved on the driving wheel 13 and the driven wheel 21, and the chain 22 is parallel to the screening frame 8. A connecting plate 23 is fixed on the chain 22. One end of the brush roller 11 is connected to the connecting plate 23 through the first connecting shaft, and the other end is slidably engaged with a limiting groove 25 arranged on the inner wall of the housing 1 through a second connecting shaft, and the limiting groove 25 is parallel to the chain 22. The motor 12 is a forward and reverse motor. When the connecting sleeve 14 is connected to the driving wheel 13, the motor 12 drives the driving wheel 13 to rotate, the driving wheel 13 drives the chain 22 to rotate, the chain 22 drives the connecting plate 23, and the connecting plate 23 drives the brush roller 11 to reciprocate along the limiting groove 25. During the reciprocating motion, the brush roller 11 contacts the bottom surface of the screening frame 8 to clean the bottom screen of the screening frame 8.

[0041] Furthermore, the first connecting shaft is rotatably connected to the brush roller 11, a rack 26 is fixedly provided at the bottom of the limiting groove 25 along its length direction, and a gear is fixedly provided on the second connecting shaft, and the gear is meshed with the rack 26. When the connecting plate drives the brush roller 11 to reciprocate along the limiting groove 25, the brush roller 11 will also rotate under the action of the gear and the rack 26 to improve the cleaning effect of the screen.

[0042] In another embodiment, in the gravel screening device, the front and rear side walls of the screening frame 8 extending out of the shell 1 are both inclined surfaces 27 inclined toward the inside of the shell to lower the height of the second discharge port 6 and the third discharge port 7 and reduce dust overflow during the screening process.

[0043] The number of equipment and processing scale described here are used to simplify the description of the utility model. The application, modification and variation of the sand and gravel screening device of the utility model are obvious to those skilled in the art.

[0044] Although the implementation scheme of the utility model has been disclosed as above, it is not limited to the applications listed in the specification and implementation modes. It can be fully applied to various fields suitable for the utility model. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. Sand and gravel screening device, characterized in that: include: A shell body, with a feed inlet at the top and a first discharge outlet at the bottom; At least two screening assemblies, including a first screening assembly and a second screening assembly spaced apart from each other, wherein the first screening assembly is arranged in the housing in an upper left and lower right manner, and the lower end thereof extends out of the housing through a second discharge port arranged on the housing, and the second screening assembly is arranged in the housing in an upper right and lower left manner, and the lower end thereof extends out of the housing through a third discharge port arranged on the housing; wherein, The screening component includes a screening frame, whose top and lower ends are open and whose bottom is a screen structure, wherein the high end and the low end of the screening frame are respectively connected to the shell through supporting springs; a vibration roller, which is arranged below the high end of the screening frame and in contact with it; a brush roller, which is arranged on the side of the vibration roller away from the high end, and the brush roller is driven by the driving component to reciprocate up and down along the bottom surface of the screening frame; a motor, which is arranged outside the shell, and the output shaft of the motor extends into the shell and is selectively connected to the vibration roller or the driving component to provide a power source for the vibration roller or the driving component.

2. The sand and gravel screening device according to claim 1, characterized in that: The vibration roller is rotationally connected to the end of the output shaft; the driving assembly is a sprocket transmission mechanism, and the driving wheel of the driving assembly is rotationally connected to the output shaft; a connecting sleeve is sleeved on the output shaft, the connecting sleeve is arranged between the driving wheel and the vibration roller, and is spline-connected to the output shaft, and the connecting sleeve is detachably connected to either the driving wheel or the vibration roller.

3. The sand and gravel screening device according to claim 2, characterized in that: A plurality of first plug holes are arranged at intervals on the end surface of the vibration roller close to the connecting sleeve, a plurality of second plug holes are arranged at intervals on the end surface of the driving wheel close to the connecting sleeve, a plurality of first plug rods are arranged at intervals on the end surface of the connecting sleeve close to the vibration roller, the plurality of first plug rods are plugged in with the plurality of first plug holes, a plurality of second plug rods are arranged at intervals on the end surface of the connecting sleeve close to the driving wheel, the plurality of second plug rods are plugged in with the plurality of second plug holes.

4. The sand and gravel screening device according to claim 2, characterized in that: A first electromagnet is provided on the end surface of the connecting sleeve close to the vibration roller, and the first electromagnet is magnetically attracted to the end surface of the vibration roller; a second electromagnet is provided on the end surface of the connecting sleeve close to the driving wheel, and the second electromagnet is magnetically attracted to the end surface of the driving wheel; the first electromagnet and the second electromagnet are not energized at the same time.

5. The sand and gravel screening device according to claim 2, characterized in that: The driving assembly includes a driving wheel, a driven wheel and a chain, a connecting plate is fixedly provided on the chain, one end of the brush roller is connected to the connecting plate through a first connecting shaft, and the other end is slidably engaged with a limiting groove provided on the inner wall of the shell through a second connecting shaft, and the limiting groove is parallel to the chain.

6. The sand and gravel screening device according to claim 5, characterized in that: The first connecting shaft is rotatably connected to the brush roller, a rack is fixedly provided at the bottom of the limiting groove along its length direction, and a gear is fixedly provided on the second connecting shaft, and the gear is meshed with the rack.

7. The sand and gravel screening device according to claim 1, characterized in that: The ends of the front and rear side walls of the screening frame extending out of the shell are both inclined surfaces inclined toward the inside of the shell.

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