Sand screening machine

Abstract

The utility model relates to the technical field of sand screening, and provides a sand screening machine which comprises a workbench. The top of the workbench is fixedly connected with a pair of first fixing blocks. The pair of first fixing blocks are symmetrically arranged; the top of the first fixing block is fixedly connected with a first motor. The output end of the first motor is fixedly connected with a first belt pulley; the first belt pulley is connected with a second belt pulley through a belt; the inner side wall of the second belt pulley is fixedly connected with a roller; the roller is arranged above the workbench; a plurality of limiting assemblies are fixedly connected to the top of the workbench. Through the arrangement of a first motor, a first belt pulley, a second belt pulley, a roller and a filter screen, the overall material screening efficiency of the device can be effectively improved, the overall usability of the device is effectively improved, and meanwhile through the arrangement of a stranding cage, the situation that materials stay in the roller in the screening process can be effectively reduced; the probability that the materials cannot be pushed out of the roller is reduced, and the overall stability of the device is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sand screening, in particular to a sand screening machine. Background Art

[0002] Sand screening machine, usually refers to sand mining machinery, also known as dry land sand screening ship or sand and gravel separator, is usually used to separate sand and gravel in rivers, reservoirs and other places.

[0003] In the prior art, a sand screening machine usually achieves the effect of separating sand and gravel by setting a roller screen drum to make the sand material roll and slide repeatedly. Usually, sand screening machines are divided into different types such as drum type, water-washed drum type and vibrating drum type.

[0004] CN220294900U discloses a screening structure and a waste treatment device, wherein the screening structure comprises: a plate body having a accommodating space therein; a metal adsorbent arranged in the accommodating space; a scraper assembly comprising a scraper bar, a driving unit and a collection box; wherein the scraper bar is attached to a side surface of the plate body; and the driving unit is used to drive the scraper bar to move so as to deliver the metal components adsorbed on the surface of the plate body into the collection box.

[0005] CN220590762U discloses a sand screening machine, comprising a screening frame, a screen is installed on the bottom end surface of the screening frame, a first motor is installed on the front end surface of the screening frame, the output end of the first motor passes through the front end surface of the screening frame and is installed with a rotating shaft, a plurality of first beating bars are installed on the outer side wall of the rotating shaft, the bottom of the screening frame is connected with a pleated sleeve, the bottom of the pleated sleeve is connected with a lower hopper; a screen cylinder is movably sleeved on the outer side wall of one end of the lower hopper, and two toothed rings distributed on the left and right are fixedly sleeved on the outer side wall of the screen cylinder. A feeding frame is provided at the bottom of the outer wall, a bottom plate is installed at the bottom of the feeding frame, two support plates distributed on the left and right are installed on the front end surface inside the feeding frame, second motors are installed on the upper end surfaces of the two support plates, first gears respectively meshed with two gear rings are installed on the output ends of the two second motors, a fixed frame is installed at the left end of the upper end surface of the feeding frame, a third motor is installed on the right side wall of the fixed frame, the output end of the third motor passes through the fixed frame and is installed with a rotating rod, and a plurality of second beating bars are installed on the outer side wall of the rotating rod.

[0006] During the long-term observation, it was found that when most sand screening machines are screening sand and gravel raw materials, the limit propulsion device is not fully set, which leads to the probability of sand and gravel raw materials accumulating and clogging in the drum, thus causing the sand screening work to stop. Utility Model Content

[0007] After long-term production practice, it was found that when most sand screening machines are screening sand and gravel raw materials, the limit propulsion device is not fully set up, which leads to the probability of sand and gravel raw materials accumulating and clogging in the drum, causing the sand screening work to stop.

[0008] In view of this, the utility model aims to propose a sand screening machine comprising a workbench; a pair of first fixed blocks are fixedly connected to the top of the workbench; the pair of first fixed blocks are symmetrically arranged; a first motor is fixedly connected to the top of the first fixed block; a first pulley is fixedly connected to the output end of the first motor; the first pulley is connected to the second pulley through a belt; a roller is fixedly connected to the inner side wall of the second pulley; the roller is arranged above the workbench; a plurality of limit assemblies are fixedly connected to the top of the workbench; a cage is fixedly connected to the inner side wall of the drum; a filter is detachably installed on the outer side wall of the drum; a plurality of the limit assemblies are in contact with the drum; through the arrangement of the first motor, the first pulley, the second pulley, the drum, and the filter, the efficiency of the overall device for material screening can be effectively improved, and the overall usability of the device can be effectively improved. At the same time, through the arrangement of the cage, the probability of the material staying in the drum during the screening process, resulting in the material being unable to be pushed out of the drum, can be effectively reduced, thereby effectively improving the overall stability of the device.

[0009] In one embodiment, the limit assembly includes a fixed seat; a rotating wheel is rotatably connected to the middle part of the fixed seat; the rotating wheel is in contact with the filter screen; multiple groups of limit frames are fixedly connected to the side walls of the drum; a group of side walls of the limit frames that are close to each other are in contact with the rotating wheel; multiple material receiving racks are fixedly connected to the top of the workbench; the material receiving rack is arranged between the workbench and the drum, and multiple groups of different material receiving racks are staggered with the fixed seat; a material storage trough is opened in the middle of the material receiving rack; through the arrangement of the fixed seat, the rotating wheel and the limit frame, the overall operation of the device can be made more stable, and the probability of the screening work being stopped due to the misalignment of the middle part of the drum during the screening work is effectively reduced, further improving the overall stability of the device, and at the same time, through the arrangement of the material receiving rack and the material storage trough, the sand under the drum screening can be effectively collected, effectively reducing the difficulty of subsequent sand collection, and further enhancing the overall usability of the device.

[0010] In one embodiment, the ends of the plurality of material receiving racks are fixedly connected to a centralizing box; the material receiving racks and the centralizing box are interconnected; the centralizing box is connected to a discharge port; the plurality of discharge ports are connected to the same centralizing box; through the arrangement of the discharge port and the centralizing box, the sand stored in different storage troughs can be effectively collected and concentrated, effectively reducing the time required for subsequent collection work and further improving the overall usability of the device.

[0011] In one embodiment, a connecting pipe is detachably installed in the middle of the collecting box; the collecting box and the connecting pipe are connected to each other; a material receiving box is detachably installed at the end of the connecting pipe; the connecting pipe and the material receiving box are connected to each other; two pairs of first fixing frames are fixedly connected to the top inner wall of the collecting box away from the workbench; a second motor is fixedly connected to the top of the two pairs of first fixing frames; a rotating shaft is fixedly connected to the output end of the second motor; and a plurality of fan blades are fixedly connected to the side wall of the rotating shaft; through the arrangement of the connecting pipe and the material receiving box, the device as a whole can store the screened sand, further reducing the difficulty and time of subsequent sand processing, and further enhancing the overall usability of the device, and at the same time, through the arrangement of the second motor, the rotating shaft and the fan blades, the sand in the collecting box can be effectively pumped into the inside of the collecting box, effectively reducing the probability of blockage due to excessive sand accumulation inside the collecting box, and further improving the overall stability of the device.

[0012] In one embodiment, a second fixed frame is provided on the side wall of the workbench; a water inlet is fixedly connected to the middle position of the top of the second fixed frame; a first water pipe is fixedly connected to the end of the water inlet; the water inlet and the first water pipe are interconnected; a plurality of groups of first spray ports are provided in the middle of the first water pipe; a group of the first spray ports are symmetrically arranged; the sand on the surface of the material can be effectively soaked with water through the water inlet, the first water pipe and the first spray port, effectively reducing the probability of the sand diffusing into the air during the screening process due to the weak adhesion of the sand on the dry surface of the material, thereby effectively improving the overall reliability of the device.

[0013] In one embodiment, a second water pipe is fixedly connected to the middle of each of the plurality of first spray openings; the second water pipe is interconnected with the first water pipe; a plurality of second spray openings are provided on the side wall of the second water pipe close to the drum; the arrangement of the second water pipe and the second spray openings can further enhance the uniformity of the spraying of sand on the surface of the material by the overall device, further reducing the probability of the sand diffusing into the air during the screening process due to the weak adhesion of the sand on the dry surface of the material, thereby causing the screening efficiency to decrease and the sand to be wasted, thereby further improving the overall reliability of the device.

[0014] In one embodiment, the side walls of the drum close to both ends are fixed with multiple second fixing blocks; the side walls of the second fixing blocks away from the drum are fixed with a vibration motor; the arrangement of the second fixing blocks and the vibration motor can effectively enhance the overall screening effect of the device.

[0015] In one embodiment, a pair of the first motors are symmetrically arranged; the output directions of the pair of the first motors are oppositely arranged; through the arrangement of the pair of first motors, the probability of different rotation speeds on both sides of the drum can be effectively reduced, and the probability of the problem of increased difficulty in sand screening due to different rotation speeds at both ends of the drum is effectively reduced.

[0016] In one embodiment, the side walls of the receiving rack on both sides close to the drum are arc-shaped, and the curvature is the same as that of the drum; through the curvature setting of the receiving rack, the receiving rack can better collect the sand under the sieve, effectively reducing the probability of sand falling to the outside.

[0017] In one embodiment, the second water pipe is arranged in an arc shape; the arc shape of the second water pipe can effectively enhance the overall spraying effect of the device.

[0018] The utility model provides a sand screening machine. Through the arrangement of a first motor, a first pulley, a second pulley, a drum and a filter, the efficiency of the overall device for material screening can be effectively improved, and the overall availability of the device is effectively improved. At the same time, through the arrangement of a cage, the probability of the material staying in the drum during the screening process, resulting in the material being unable to be pushed out of the drum, can be effectively reduced, thereby effectively improving the overall stability of the device.

[0019] In addition, the setting of the fixed seat, rotating wheel and limit frame can make the overall operation of the device more stable, effectively reducing the probability of the screening work stopping due to the misalignment of the middle part of the drum during the screening operation, further improving the overall stability of the device, and at the same time, the setting of the material collecting rack and the material storage trough can effectively collect the sand under the drum screening, effectively reducing the difficulty of subsequent sand collection, and further enhancing the overall usability of the device.

[0020] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic implementation modes and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the workbench in the utility model;

[0023] Figure 2 It is a structural schematic diagram of the drum and the filter screen in the utility model;

[0024] Figure 3This is a schematic diagram of the structure of the material storage trough and the collection box in the utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the material storage tank and the second motor in the utility model;

[0026] Figure 5 It is a cross-sectional view of the second fixing frame in the utility model.

[0027] Description of reference numerals:

[0028] 1 working table 11 first fixed block

[0029] 12 first motor 13 first pulley

[0030] 14 second pulley 15 roller

[0031] 16 filter screen 17 cage

[0032] 2 fixed seat 21 rotating wheel

[0033] 22 limit frame 23 material receiving rack

[0034] 24 storage troughs 3 discharge ports

[0035] 31 Centralized box 4 connecting pipe

[0036] 41 material receiving box 42 second motor

[0037] 43 first fixed frame 44 rotating shaft

[0038] 45 blade 5 second fixing bracket

[0039] 51 water inlet 52 first water pipe

[0040] 53 first spray port 6 second water pipe

[0041] 61 second spray port 7 second fixing block

[0042] 71 vibration motor DETAILED DESCRIPTION

[0043] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0044] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0045] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so as to describe the embodiments of the utility model described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices; "fixed" or "fixed connection" generally refers to common mechanical connection methods, such as threaded connection, welding or bonding, etc.

[0046] In order to solve the problem mentioned in the background technology section, when most sand screening machines screen sand and gravel raw materials, the limit propulsion device is not fully set, which leads to the probability of sand and gravel raw materials accumulating and clogging in the drum, thus causing the sand screening work to stop. The utility model provides a sand screening machine, such as Figure 1-Figure 5As shown, it includes a workbench 1; a pair of first fixed blocks 11 are fixedly connected to the top of the workbench 1; the pair of first fixed blocks 11 are symmetrically arranged; a first motor 12 is fixedly connected to the top of the first fixed block 11; a first pulley 13 is fixedly connected to the output end of the first motor 12; the first pulley 13 is connected to the second pulley 14 through a belt; a roller 15 is fixedly connected to the inner side wall of the second pulley 14; the roller 15 is arranged above the workbench 1; a plurality of limit assemblies are fixedly connected to the top of the workbench 1; a cage 17 is fixedly connected to the inner side wall of the roller 15; a filter screen 16 is detachably installed on the outer side wall of the roller 15; a plurality of the limit assemblies are in contact with the roller 15; when working, the power supply of the first motor 12 is turned on first, at which time the first motor 12 will drive the first pulley 13 to start rotating, and then the first pulley 13 will be connected to the second pulley 14 through the belt The belt drives the second pulley 14 and the drum 15 to start rotating in turn, and then the material to be screened is put into the drum 15. At this time, the material will start to roll inside the drum 15 and the cage 17 will continue to push the material to the other end of the drum 15. When the material rolls inside the drum 15, the sand attached to the surface of the material will be shaken off. At this time, the filter screen 16 will automatically prevent the material from falling off. The arrangement of the first motor 12, the first pulley 13, the second pulley 14, the drum 15, and the filter screen 16 can effectively improve the efficiency of the overall material screening device, and effectively improve the overall availability of the device. At the same time, the arrangement of the cage 17 can effectively reduce the probability of the material staying in the drum 15 during the screening process, resulting in the material being unable to be pushed out of the drum 15, thereby effectively improving the overall stability of the device.

[0047] In order to make the overall operation of the device more stable and to better collect the sand material under the screening, in another embodiment of the utility model, Figure 1 and Figure 3As shown, the limiting assembly includes a fixed seat 2; a rotating wheel 21 is rotatably connected in the middle of the fixed seat 2; the rotating wheel 21 is in contact with the filter screen 16; a plurality of limiting frames 22 are fixedly connected to the side wall of the drum 15; a group of mutually adjacent side walls of the limiting frames 22 are in contact with the rotating wheel 21; a plurality of material receiving racks 23 are fixedly connected to the top of the workbench 1; the material receiving racks 23 are arranged between the workbench 1 and the drum 15, and a plurality of different material receiving racks 23 are staggered with the fixed seat 2; a material storage slot 24 is provided in the middle of the material receiving rack 23; during operation, the rotating wheel 21 and the limiting frame 22 will automatically play a limiting role to reduce the misalignment of the drum 15, At the same time, the storage trough 24 will automatically collect the sand screened by the drum 15 to reduce the difficulty of subsequent collection work. The setting of the fixed seat 2, the rotating wheel 21, and the limit frame 22 can make the overall operation of the device more stable, effectively reducing the probability of the screening work being stopped due to the misalignment of the middle part of the drum 15 during the screening work, thereby further improving the overall stability of the device. At the same time, the setting of the collecting rack 23 and the storage trough 24 can effectively collect the sand screened by the drum 15, effectively reducing the difficulty of subsequent sand collection, and further enhancing the overall usability of the device.

[0048] In order to enable the device as a whole to collect the sand material under the screening as a whole, in another embodiment of the utility model, as Figure 3 As shown, the ends of the plurality of material receiving racks 23 are fixedly connected with a centralizing box 31; the material receiving racks 23 are interconnected with the centralizing box 31; the centralizing box 31 is connected with a discharge port 3; the plurality of discharge ports 3 are connected to the same centralizing box 31; when the sieved sand needs to be further processed during operation, a pre-prepared air pump can be connected to the centralizing box 31, and then the air pump can be turned on to pump air outwards, at which time the sand inside the plurality of storage slots 24 will be simultaneously pumped into the centralizing box 31, so as to further reduce the difficulty of subsequent processing of the sand, and the arrangement of the discharge port 3 and the centralizing box 31 can effectively collect the sand stored in different storage slots 24, effectively reducing the time required for subsequent collection work, and further improving the overall availability of the device.

[0049] In order to enable the entire device to store the sand material after the screening, in another embodiment of the utility model, as Figure 3 and Figure 4As shown, a connecting pipe 4 is detachably installed in the middle of the central box 31; the central box 31 and the connecting pipe 4 are communicated with each other; a material receiving box 41 is detachably installed at the end of the connecting pipe 4; the connecting pipe 4 and the material receiving box 41 are communicated with each other; two pairs of first fixing frames 43 are fixedly connected to the top inner wall of the material receiving box 41 away from the workbench 1; the tops of the two pairs of the first fixing frames 43 are fixedly connected to the second motor 42; the output end of the second motor 42 is fixedly connected to a rotating shaft 44; the side wall of the rotating shaft 44 is fixedly connected to a plurality of fan blades 45; when working, the power supply of the second motor 42 is turned on first, at which time the second motor 42 will drive the rotating shaft 44 and the fan blades 45 to start rotating in sequence, and at this time the fan blades 45 will be drawn outward. At this time, the fan blades 45 will pump the sand inside the collecting box 31 into the collecting box 41 through the collecting box 41 and the connecting pipe 4, so as to achieve the purpose of collecting and storing the sand. The setting of the connecting pipe 4 and the collecting box 41 can enable the device as a whole to store the sieved sand, further reducing the difficulty and time of subsequent sand processing, and further enhancing the overall usability of the device. At the same time, the setting of the second motor 42, the rotating shaft 44, and the fan blades 45 can effectively pump the sand in the collecting box 31 into the collecting box 41, effectively reducing the probability of blockage due to excessive sand accumulation inside the collecting box 31, and further improving the overall stability of the device.

[0050] In order to reduce the diffusion of sand particles during the screening process, in another embodiment of the present invention, as Figure 1 and Figure 5 As shown, the side wall of the workbench 1 is provided with a second fixing frame 5; a water inlet 51 is fixedly connected to the middle position of the top of the second fixing frame 5; a first water pipe 52 is fixedly connected to the end of the water inlet 51; the water inlet 51 and the first water pipe 52 are communicated with each other; a plurality of groups of first spray ports 53 are arranged in the middle of the first water pipe 52; a group of the first spray ports 53 are symmetrically arranged; when working, the pre-prepared water source is first connected to the water inlet 51, and the water will flow into the first water pipe 52 through the water inlet 51 and then spray out from the first spray port 53. At this time, the water sprayed from the first spray port 53 will be sprinkled on the surface of the material being screened, so that the sand on the surface of the material will be soaked, so as to achieve the purpose of reducing the diffusion of sand in the air. The sand on the surface of the material can be effectively soaked by water through the water inlet 51, the first water pipe 52, and the first spray port 53, which effectively reduces the probability of sand diffusion into the air during the screening process due to the weak adhesion of sand on the dry material surface, thereby effectively reducing the probability of reduced screening efficiency and waste of sand, thereby effectively improving the overall reliability of the device.

[0051] In order to further wet the sandstone raw materials, in another embodiment of the utility model, as Figure 5As shown, a second water pipe 6 is fixedly connected to the middle of each of the plurality of first spray ports 53; the second water pipe 6 is interconnected with the first water pipe 52; a plurality of second spray ports 61 are provided on the side wall of the second water pipe 6 close to the drum 15; during operation, water will flow into the second water pipe 6 through the first spray port 53, and then be sprayed out from the second spray port 61, so as to achieve the purpose of wetting the material more evenly. The arrangement of the second water pipe 6 and the second spray port 61 can further enhance the uniformity of the spraying of sand on the surface of the material by the overall device, further reduce the probability of the sand diffusing into the air during the screening process due to the weak adhesion of the sand on the dry surface of the material, and further improve the overall reliability of the device.

[0052] In order to increase the screening efficiency of sandstone raw materials, in another embodiment of the utility model, as Figure 1 As shown, the side walls of the drum 15 close to both ends are fixedly connected with a plurality of second fixed blocks 7; the side walls of the second fixed blocks 7 away from the drum 15 are fixedly connected with a vibration motor 71; during operation, when the screening work is in progress, the power supply of the vibration motor 71 can be turned on, at which time the vibration motor 71 will vibrate and the vibration will be transmitted to the drum 15 through the second fixed blocks 7 to achieve a better screening effect. The arrangement of the second fixed blocks 7 and the vibration motor 71 can effectively enhance the overall screening effect of the device.

[0053] In order to make the operation of the device more reliable and stable, a reduction device is arranged in the transmission system. In another embodiment of the utility model, a pair of the first motors 12 are symmetrically arranged; the output directions of the pair of the first motors 12 are oppositely arranged; through the arrangement of a pair of first motors 12, the probability of different rotation speeds on both sides of the drum 15 can be effectively reduced, and the probability of the problem of increased difficulty in sand screening due to different rotation speeds at both ends of the drum 15 is effectively reduced.

[0054] In order to reduce the probability of sand flying to the outside during the process of collecting sand, in another embodiment of the utility model, the side walls of the collecting rack 23 on both sides close to the drum 15 are arc-shaped, and the curvature is the same as that of the drum 15; through the arc setting of the collecting rack 23, the collecting rack 23 can better collect the sand after the sieve, effectively reducing the probability of sand falling to the outside.

[0055] Working principle: when working, first turn on the power of the first motor 12. At this time, the first motor 12 will drive the first pulley 13 to start rotating, and then the first pulley 13 will drive the second pulley 14 and the drum 15 to start rotating in sequence through the belt, and then the material that needs to be screened is put into the drum 15. At this time, the material will start to roll inside the drum 15 and the cage 17 will continue to push the material to the other end of the drum 15. When the material rolls inside the drum 15, the sand attached to the surface of the material will be shaken off. At this time, the filter screen 16 will automatically prevent the material from falling together. The rotating wheel 21 and the limit frame 22 will automatically play a limiting role to reduce the misalignment of the drum 15. At the same time, the storage trough 24 will automatically collect the sand sieved by the drum 15 to reduce the difficulty of subsequent collection work. When the sieved sand needs to be further processed, the pre-prepared air pump can be connected to the central box 31, and then the air pump is turned on to pump air outward. At this time, the sand inside multiple storage troughs 24 will be simultaneously pumped into the central box 31 to achieve further In order to reduce the difficulty of subsequent processing of sand, the power of the second motor 42 is first turned on. At this time, the second motor 42 will drive the rotating shaft 44 and the fan blades 45 to start rotating in sequence. At this time, the fan blades 45 will draw air outward. At this time, the fan blades 45 will pump the sand inside the collection box 31 into the collection box 41 through the collection box 41 and the connecting pipe 4 to achieve the purpose of collecting and storing the sand. First, the pre-prepared water source is connected to the water inlet 51. At this time, the water flow will flow into the first water pipe 52 through the water inlet 51 and then spray out from the first spray port 53. At this time, the water sprayed from the first spray port 53 will be sprinkled on the surface of the material being screened, so that the sand on the surface of the material is soaked, so as to achieve the purpose of reducing the diffusion of sand in the air. The water flow will flow into the second water pipe 6 through the first spray port 53, and then be sprayed out from the second spray port 61 to achieve the purpose of wetting the material more evenly. When the screening work is in progress, the power of the vibration motor 71 can be turned on. At this time, the vibration motor 71 will vibrate and the vibration will be transmitted to the drum 15 through the second fixed block 7 to achieve the purpose of better screening effect.

[0056] It should be noted that, for the above-mentioned method embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the utility model is not limited by the described action sequence, because according to the utility model, some steps can be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the utility model.

[0057] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0058] In the several embodiments provided by the present utility model, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are only schematic, such as the division of the units, which is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection of devices or units can be electrical or other forms.

[0059] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0060] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A sand screening machine, comprising a workbench (1); characterized in that: A pair of first fixed blocks (11) are fixedly connected to the top of the workbench (1); the pair of first fixed blocks (11) are symmetrically arranged; a first motor (12) is fixedly connected to the top of the first fixed block (11); a first belt pulley (13) is fixedly connected to the output end of the first motor (12); the first belt pulley (13) is connected to a second belt pulley (14) via a belt; a roller (15) is fixedly connected to the inner wall of the second belt pulley (14); the roller (15) is arranged above the workbench (1); a plurality of limit assemblies are fixedly connected to the top of the workbench (1); a cage (17) is fixedly connected to the inner wall of the roller (15); a filter screen (16) is detachably mounted on the outer wall of the roller (15); and a plurality of the limit assemblies are in contact with the roller (15).

2. The sand screening machine according to claim 1, characterized in that: The limiting assembly comprises a fixed seat (2); a rotating wheel (21) is rotatably connected to the middle of the fixed seat (2); the rotating wheel (21) is in contact with the filter screen (16); a plurality of limiting frames (22) are fixedly connected to the side wall of the drum (15); a group of mutually adjacent side walls of the limiting frames (22) are in contact with the rotating wheel (21); a plurality of material receiving racks (23) are fixedly connected to the top of the workbench (1); the material receiving racks (23) are arranged between the workbench (1) and the drum (15), and a plurality of different material receiving racks (23) are staggeredly arranged with the fixed seat (2); a material storage trough (24) is provided in the middle of the material receiving rack (23).

3. The sand screening machine according to claim 2, characterized in that: The ends of the plurality of material receiving racks (23) are all fixedly connected to a central box (31); the material receiving racks (23) and the central box (31) are connected to each other; the central box (31) is connected to a discharge port (3); and the plurality of discharge ports (3) are connected to the same central box (31).

4. The sand screening machine according to claim 3, characterized in that: A connecting pipe (4) is detachably mounted in the middle of the central box (31); the central box (31) and the connecting pipe (4) are in communication with each other; a material receiving box (41) is detachably mounted at the end of the connecting pipe (4); the connecting pipe (4) and the material receiving box (41) are in communication with each other; two pairs of first fixing frames (43) are fixedly connected to the top inner wall of the material receiving box (41) away from the workbench (1); a second motor (42) is fixedly connected to the top of the two pairs of the first fixing frames (43); a rotating shaft (44) is fixedly connected to the output end of the second motor (42); and a plurality of fan blades (45) are fixedly connected to the side wall of the rotating shaft (44).

5. The sand screening machine according to claim 4, characterized in that: The side wall of the workbench (1) is provided with a second fixing frame (5); a water inlet (51) is fixedly connected to the middle position of the top of the second fixing frame (5); a first water pipe (52) is fixedly connected to the end of the water inlet (51); the water inlet (51) and the first water pipe (52) are interconnected; a plurality of groups of first spraying ports (53) are provided in the middle of the first water pipe (52); a group of the first spraying ports (53) are symmetrically arranged.

6. The sand screening machine according to claim 5, characterized in that: A second water pipe (6) is fixedly connected to the middle of each of the plurality of first spray openings (53); the second water pipe (6) is connected to the first water pipe (52); and a plurality of second spray openings (61) are provided on the side wall of the second water pipe (6) close to the drum (15).

7. The sand screening machine according to claim 6, characterized in that: The second water pipe (6) is arranged in an arc shape.

8. The sand screening machine according to claim 1, characterized in that: The side walls of the roller (15) close to both ends are fixedly connected to a plurality of second fixing blocks (7); the side walls of the second fixing blocks (7) away from the roller (15) are fixedly connected to a vibration motor (71).

9. The sand screening machine according to any one of claims 1 to 8, characterized in that: The pair of the first motors (12) are symmetrically arranged; the output directions of the pair of the first motors (12) are oppositely arranged.

10. The sand screening machine according to claim 2, characterized in that: The side walls of the material receiving rack (23) on both sides close to the roller (15) are arranged in an arc shape, and the arc is the same as that of the roller (15).

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