Sand screening machine

Abstract

The utility model relates to the technical field of gravel screening, in particular to a sand screening machine which comprises a machine body, a feeding port, a discharging port and a screening and dispersing structure, a main channel, a transfer cavity and a plurality of branch channels are formed in the machine body, and a filter screen is arranged at the input end of each branch channel; the transfer cavity is connected between the main channel and the multiple branch channels, and the screening and dispersing structure is provided with two closed structures capable of axially rotating relative to each other and a stirring structure; when the sealing structure rotates, the branch channels can be opened or closed; when the stirring structure rotates, materials in the transfer cavity can be dispersed, and the materials are assisted in entering the sub-channels; according to the sand screening device, full screening can be conducted in the transfer cavity during sand screening, the filter screen is prevented from being blocked through the stirring structure, and therefore the screening efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sand screening technical field, especially relate to a sand screening machine. BACKGROUND

[0002] The sand screening machine is a machine for screening sand, which is generally used for screening and removing impurities and stones in sand in construction.

[0003] In the screening process of the sand screening machine, stones are mixed with sand, so that when the stones cover the screen and block the path of sand in the screening process, the screen is easily blocked, affecting the screening efficiency.

[0004] Therefore, a sand screening machine is needed to solve the above problems. UTILITY MODEL CONTENT

[0005] In view of the deficiencies in the prior art, the utility model aims to provide a sand screening machine to solve the problems in the background art.

[0006] The technical scheme of the utility model is as follows: a sand screening machine comprises:

[0007] A machine body is formed with a channel for sand and stones to move in the machine body;

[0008] A feeding port is arranged at the top of the machine body and communicates with the channel;

[0009] A discharging port is arranged at the bottom of the machine body and communicates with the channel; the channel comprises a main channel connected with the feeding port, a transfer cavity and a plurality of branch channels connected with the discharging port, and each branch channel is provided with a filter screen at the input end;

[0010] The transfer cavity is connected between the main channel and the plurality of branch channels, and a screening and dispersing structure is arranged in the transfer cavity; the screening and dispersing structure comprises a closed structure and a stirring structure which can rotate axially relative to each other;

[0011] When the closed structure rotates, the branch channel can be opened or closed;

[0012] When the stirring structure rotates, the material in the transfer cavity can be dispersed and assisted to enter each branch channel.

[0013] Preferably, the closed structure comprises:

[0014] Rotary discs are arranged at both ends of the transfer cavity at intervals, and any rotary disc is rotationally connected with the transfer cavity through a first transmission shaft;

[0015] A closed plate is connected between the rotary discs, and the closed plates form a discharging area for the material to pass through.

[0016] One end of the first transmission shaft is arranged to pass through the body, and a driven gear is arranged on the first transmission shaft, and a driving rack capable of being controlled to reciprocate by a hydraulic cylinder and engaged with the driven gear is also slidably connected to the body.

[0017] Preferably, the stirring structure comprises:

[0018] A second transmission shaft is arranged to pass through the body from the rotating disc and is capable of rotating axially relative to the rotating disc;

[0019] A stirring shaft is coaxially connected to the second transmission shaft, and one end of the stirring shaft is rotationally connected to the other rotating disc;

[0020] A stirring module is fixedly connected to the stirring shaft;

[0021] The body is provided with a driving motor for driving the second transmission shaft to rotate.

[0022] Preferably, the side of the closing plate close to the main passage is curved.

[0023] Preferably, the stirring module comprises:

[0024] A plurality of sieve plates having a plurality of sieve openings;

[0025] A plurality of pushing plates;

[0026] The sieve plates are circumferentially and equidistantly spaced on the stirring shaft, the pushing plates are circumferentially and equidistantly spaced on the stirring shaft, and each pushing plate is located between adjacent sieve plates.

[0027] The present application has at least the following advantages:

[0028] 1. The sand screening machine performs screening work in the transfer cavity, the material enters from the feeding port, passes through the main passage into the transfer cavity, and is discharged into each sub-passage after being screened in the transfer cavity. Since the screening dispersion structure is arranged in the transfer cavity to assist the screening of the material, the screening dispersion structure can stir the material in the transfer cavity, avoid the stone covering the screening to block the screening path, and thus ensure the screening efficiency.

[0029] 2. The stirring module of the present application is composed of a plurality of sieve plates and pushing plates arranged alternately. When the sieve plates and pushing plates move, the sieve plates are used for screening large stone blocks in the material, and the pushing plates are used for pushing the remaining material towards the filter screen, so that the sand can be screened out more quickly.

[0030] In addition, other advantages of the present application will be shown in the embodiment part of the present application, so that the advantages of the present application are more significant. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the structure of a specific embodiment 1 of the present utility model;

[0033] Figure 2 for Figure 1 Another perspective structural diagram;

[0034] Figure 3 This is a cross-sectional view of the machine body in specific embodiment 1 of this utility model;

[0035] Figure 4 This is a schematic diagram of the sieving and dispersing structure in specific embodiment 1 of this utility model;

[0036] Figure 5 This is a structural schematic diagram of a specific embodiment 2 of the present utility model. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] like Figures 1-4 As shown, this utility model discloses a sand screening machine, comprising:

[0039] Body 10, wherein a channel for sand and gravel to move is formed inside the body 10;

[0040] The feed inlet 11 is located at the top of the machine body 10 and is connected to the channel;

[0041] The discharge port 12 is located at the bottom of the machine body 10 and is connected to the channel; the channel includes a main channel 20 connected to the feed port 11, a transfer chamber 21 and several branch channels 22 connected to the discharge port 12. Each branch channel 22 has a filter screen 23 at its input end (the position where the branch channel connects to the transfer chamber). In this embodiment, in order to ensure that large particles (such as stones) in the transfer chamber can be discharged, a stone discharge channel 24 is also provided on the machine body 10.

[0042] The transfer chamber 21 is connected between the main channel 20 and several sub-channels 22, and a sieving and dispersing structure is provided in the transfer chamber 21. The sieving and dispersing structure has a closed structure that can rotate relative to the axial direction and a stirring structure.

[0043] When the closed structure rotates, it can open or close the sub-channel 22;

[0044] When the stirring structure rotates, it can disperse the material in the transfer chamber 21 and assist the material in entering each sub-channel 22.

[0045] In this embodiment: the closed structure includes:

[0046] Rotary disks 30 are spaced apart at both ends of the transfer cavity 21, and any one of the rotating disks 30 is rotatably connected to the transfer cavity 21 through the first transmission shaft 31.

[0047] A closing plate 32 is connected between the rotating disks 30, and a discharge area for material to pass through is formed between the closing plates 32;

[0048] One end of the first drive shaft 31 extends out of the machine body 10, and a driven gear 33 is installed on the first drive shaft 31. A drive rack 35, which can be controlled by a hydraulic cylinder 34 to reciprocate and mesh with the driven gear 33, is also slidably connected to the machine body 10.

[0049] In this embodiment: the stirring structure includes:

[0050] The second drive shaft 40 extends out of the machine body 10 from the rotating disk 30 and can rotate axially relative to the rotating disk 30.

[0051] The stirring shaft 41 is coaxially connected to the second drive shaft 40, and one end is rotatably connected to another rotating disk 30;

[0052] The stirring module 42 is fixedly connected to the stirring shaft 41. In this embodiment, the stirring module is a stirring plate fixed on the stirring shaft 41.

[0053] The machine body 10 is equipped with a drive motor 43 for driving the second transmission shaft 40 to rotate. The drive motor 43 drives the second transmission shaft 40 to rotate through a pulley structure. The pulley structure consists of a first pulley 50, a second pulley 51 and a transmission belt 52. The first pulley and the second pulley are respectively connected to the second transmission shaft and the motor shaft of the drive motor, and the transmission belt is connected between the first pulley and the second pulley.

[0054] In this embodiment, the side of the sealing plate 32 closest to the main channel 20 is designed as a curved surface.

[0055] refer toFigures 1-4 The principle of the embodiment is that when screening sand, the material is added from the feeding port and enters the transfer cavity through the main channel, is screened by each filter screen, the qualified sand passes through the filter screen into each sub-channel and is discharged and collected, and the screening of sand is completed, and the unqualified material is left in the transfer cavity, thereby completing the screening work.

[0056] When the material enters the transfer cavity from the main channel, the hydraulic cylinder drives the rack to control the driven gear to drive the rotating disc to rotate, and the closing plate closes the stone discharge channel, and the other closing plate is located at the communication between the main channel and the transfer cavity, so that when the material enters the transfer cavity from the main channel, it is guided by the curved surface at the top of the closing plate to move to the two sides of the transfer cavity, thereby avoiding the accumulation of material at a certain place in the transfer cavity;

[0057] When the material enters the transfer cavity, the driving motor drives the stirring structure to rotate through the belt pulley structure, and the stirring structure is used to stir the material in the transfer cavity, thereby avoiding the accumulation of unqualified material on the filter screen and causing blockage, thereby ensuring the efficiency of screening.

[0058] After the material screening is completed, the rotating disc is controlled to rotate by the hydraulic cylinder, so that the closing plate opens the stone discharge channel, thereby discharging the unqualified material in the transfer cavity, and the stirring structure can also be driven to assist smooth discharge.

[0059] Embodiment 2, which is different from embodiment 1:

[0060] As shown in Figure 5 In this embodiment, the stirring module comprises:

[0061] A plurality of sieve plates 50 having a plurality of sieve openings, the sieve plates of the embodiment can be sieve screen structures, and the diameter of the sieve openings is greater than the diameter of the mesh openings of the filter screen at the input end of the sub-channel;

[0062] A plurality of pusher plates 51;

[0063] Among them, the sieve plates 50 are distributed equidistantly and circumferentially on the stirring shaft 41, the pusher plates 51 are distributed equidistantly and circumferentially on the stirring shaft 41, and each pusher plate 51 is located between adjacent sieve plates 50.

[0064] Reference Figure 5When the material is located in the transfer cavity, the stirring shaft rotates to drive the sieve plate and the pushing plate to move, the sieve plate lifts up the material with particles larger than the sieve opening (the mesh opening of the mesh) when the sieve plate contacts the material, then the pushing plate pushes the material screened by the mesh to move, when the part of the material moves to the filter screen position, the sand meeting the requirements of the filter screen can pass through the filter screen into the sub-channel, thereby completing the screening, and the sieve plate of the embodiment can screen the material in the transfer cavity, first separates the material that cannot penetrate the sieve opening, then the pushing plate pushes the remaining material to move, thereby reducing the burden of the filter screen screening and ensuring the efficiency of the screening.

[0065] It is worth mentioning that: the sieve plate and the pushing plate of the embodiment can be provided with one or more than one, and the number of the sieve plate and the pushing plate is not limited in the embodiment.

[0066] The above only describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A sand screening machine, comprising: The body (10) has a channel for sand and gravel to move within it; The feed inlet (11) is located at the top of the machine body (10) and is connected to the channel; The discharge port (12) is located at the bottom of the machine body (10) and is connected to the channel; the channel includes a main channel (20) connected to the feed port (11), a transfer chamber (21) and several sub-channels (22) connected to the discharge port (12), and each sub-channel (22) is provided with a filter screen (23) at its input end; The transfer chamber (21) is connected between the main channel (20) and several sub-channels (22), and a sieving and dispersing structure is provided in the transfer chamber (21). The sieving and dispersing structure has a closed structure that can rotate relative to the axial direction and a stirring structure. When the closed structure rotates, it can open or close the sub-channels (22); When the stirring structure rotates, it can disperse the material in the transfer chamber (21) and assist the material in entering each sub-channel (22).

2. The sand screening machine according to claim 1, characterized in that: The closed structure includes: Rotary disks (30) are spaced at both ends of the transfer cavity (21), and any one of the rotating disks (30) is rotatably connected to the transfer cavity (21) through the first transmission shaft (31); A closed plate (32) is connected between the rotating disks (30), and a discharge area for material to pass through is formed between the closed plates (32); One end of the first drive shaft (31) extends out from the machine body (10), and a driven gear (33) is installed on the first drive shaft (31). A drive rack (35) that can be controlled by a hydraulic cylinder (34) to reciprocate and mesh with the driven gear (33) is also slidably connected to the machine body (10).

3. A sand screening machine according to claim 2, characterized in that: The stirring structure includes: The second drive shaft (40) extends out of the machine body (10) from the rotating disk (30) and is axially rotatable relative to the rotating disk (30); The stirring shaft (41) is coaxially connected to the second drive shaft (40), and one end is rotatably connected to another rotating disk (30); The stirring module (42) is fixedly connected to the stirring shaft (41); The machine body is equipped with a drive motor (43) for driving the second transmission shaft (40) to rotate.

4. A sand screening machine according to claim 2 or 3, characterized in that: The side of the enclosure plate (32) closest to the main channel (20) is curved.

5. A sand screening machine according to claim 3, characterized in that: The stirring module includes: Several sieve plates (50) have several sieve openings; Several pusher plates (51); The sieve plates (50) are circumferentially and equally spaced on the stirring shaft (41), and the pusher plates (51) are circumferentially and equally spaced on the stirring shaft (41), with each pusher plate (51) located between adjacent sieve plates (50).

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