Wheat flour impurity removal equipment

Abstract

The invention relates to the technical field of flour processing, in particular to wheat flour impurity removal equipment which comprises a shell and further comprises a first filter screen, a second filter screen, a third filter screen and a fourth filter screen. The elastic vibration assembly is installed between the first filter screen and the shell and used for driving the first filter screen to vibrate through elasticity to promote flour filtration after flour enters the top of the first filter screen; the feeding assembly is mounted at the top of the shell and used for conveying flour to the top of the first filter screen; the re-separation assembly is mounted at the bottom of the shell and is used for performing secondary airflow separation on the primarily separated flour so as to further remove impurities from the flour; according to the device, impurities can be prevented from being crushed and refined through vibration screening of the elastic vibration assembly, fine impurities are prevented from being mixed into flour to affect the purity, the problems that traditional filtering is prone to blockage and impurities are refined are effectively solved, and the flour impurity removal efficiency and quality stability are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of flour processing, and in particular to a wheat flour impurity removal device. BACKGROUND

[0002] The wheat flour impurity removal device refers to a special device for removing various impurities in the production process of wheat and flour. These devices separate stones, chaff, insect eggs, metal scraps and chemical residues from raw materials or finished products through physical or chemical methods such as screening, air separation, specific gravity separation, magnetic separation, etc., to ensure the purity and safety of flour, optimize the quality of flour processing, and are widely used in the wheat flour milling process.

[0003] For ground wheat flour, a filtering method is usually used in the impurity removal process. In the prior art, in order to avoid clogging during the filtering process, a flipping or pushing method is usually used to promote the movement of the flour on the filter screen, which causes the impurities contained in the flour to be crushed and refined during the flipping process, increasing the impurities filtered together with the flour, thereby affecting the impurity removal effect. SUMMARY

[0004] The present application aims to solve the problems in the prior art and provides a wheat flour impurity removal device.

[0005] The present application provides a wheat flour impurity removal device, comprising a shell, further comprising:

[0006] A first filter screen is installed inside the shell for filtering and removing impurities from the flour.

[0007] An elastic vibration assembly is installed between the first filter screen and the shell, which is used to vibrate the first filter screen by elastic driving after the flour enters the top of the first filter screen to promote the filtration of the flour.

[0008] A feeding assembly is installed on the top of the shell for conveying flour to the top of the first filter screen.

[0009] A secondary separation assembly is installed at the bottom of the shell for secondary air flow separation of the initially separated flour to further remove impurities from the flour.

[0010] The elastic vibration assembly makes the filter screen vibrate at a high frequency and a low amplitude. The flour rolls under the vibration, and impurities are not compacted or broken during the screening process. Then, the flour enters the separation assembly and is separated again by airflow. Compared with the existing technology that uses a rolling or pushing method, the vibration screening can avoid compacting and refining impurities, prevent fine impurities from mixing into the flour, and further remove light impurities by airflow separation, thereby significantly improving the impurity removal effect. The entire device has a compact structure, and the screening and separation work together to effectively solve the problems of easy blocking and impurity refinement in traditional filtering, thereby improving the flour impurity removal efficiency and quality stability.

[0011] Preferably, the elastic vibration assembly comprises:

[0012] a vibration plate fixed to the edge of the first filter screen;

[0013] a top plate and a bottom plate fixed to the top and bottom of the shell, respectively;

[0014] two groups of springs fixed between the top plate and the vibration plate and between the vibration plate and the bottom plate, respectively;

[0015] a first fixed frame fixed to the top of the vibration plate;

[0016] a first connecting cloth fixedly connected between the first fixed frame and the top plate;

[0017] a second fixed frame fixed to the top of the bottom plate;

[0018] a second connecting cloth fixed between the second fixed frame and the vibration plate;

[0019] The vibration plate is connected to the edge of the first filter screen, and the springs of the top plate and the bottom plate form a spring-vibration plate elastic support structure. When the flour enters, the elastic deformation of the springs and the inertia of the vibration plate work together to make the first filter screen vibrate vertically to the filter screen plane at a high frequency. This vibration not only drives the flour to roll on the filter screen surface, but also continuously moves downward under the combined action of gravity and vibration. The damping of the springs and the flexibility of the first and second connecting cloths jointly ensure the stability of the vibration, effectively avoiding the problem of crushing impurities in the traditional rolling or pushing method. At the same time, the first and second connecting cloths, the first fixed frame, and the second fixed frame maintain two relatively independent spaces above and below the first filter screen, avoiding the situation of flour scattering and overflowing due to vibration during the filtering process.

[0020] Preferably, the elastic vibration assembly further comprises:

[0021] two frames symmetrically fixed to the two sides inside the shell;

[0022] Two top baffles are respectively fixed on the top of the two frames;

[0023] Two bottom baffles are respectively fixed on the bottom of the two frames;

[0024] The two sides of the vibration plate are slidingly installed inside the frame;

[0025] By symmetrically arranging the frames inside the shell on both sides, and installing the top baffles and the bottom baffles on the top and the bottom of the frames respectively, and slidingly installing the two sides of the vibration plate inside the frame, the vibration plate can stably slide up and down along the frame when moving, and when the spring drives the vibration plate and the first filter screen to vibrate, the frame provides a guiding and limiting effect for the vibration plate, ensuring the stable movement of the vibration plate in the vertical direction, preventing deviation or shaking during vibration, thereby ensuring the uniform movement and screening effect of the flour on the first filter screen, and when the vibration plate moves upward to the position of the top baffle, it will be blocked by the top baffle, causing the vibration plate to impact the top baffle and intensify the vibration of the vibration plate, thereby accelerating the passage of the flour and reducing the occurrence of blockage.

[0026] Preferably, the re-separation assembly comprises:

[0027] An air pump is fixed on the side wall of the shell, and the output shaft of the air pump is connected to the second fixed frame;

[0028] An inclined table is fixed on the inner wall of the top of the second fixed frame to guide the flour to the direction of the air pump;

[0029] When the flour falls into the second fixed frame after preliminary filtration, the inclined table guides the flour to the direction of the air pump, and when the air pump is started, an air flow is generated, which blows the flour and separates the light impurities in the flour with the air flow, while the heavier flour particles continue to fall, thereby realizing secondary air flow separation and further removing impurities in the flour. The air flow generated by the air pump can blow out the lighter flour, so that the stone particles are left behind, thereby realizing further separation. At the same time, the guiding effect of the inclined table ensures that the flour can fully contact with the air flow, enhancing the separation effect. The entire re-separation process does not require manual intervention, has high automation degree, reduces the risk of manual cost and operation error, and ensures the quality and efficiency of flour impurity removal.

[0030] Preferably, the re-separation assembly further comprises:

[0031] A recovery frame is fixed on one side of the shell and is connected to the second fixed frame;

[0032] A second filter screen is fixed inside the connection position of the recovery frame and the second fixed frame;

[0033] A guide hopper fixedly connected to the bottom of the recycling frame;

[0034] A control valve installed in the interior of the guide hopper;

[0035] When the flour falls into the second fixed frame after the primary filtration, the inclined table guides the flour to the direction of the air pump. When the air pump is started, the airflow generated will blow the flour. Under the action of the airflow, the flour will be blown to the recycling frame. The second filter screen further filters the flour containing a small amount of impurities to ensure the purity of the flour. The flour particles after filtration fall into the guide hopper at the bottom of the recycling frame. The output of the flour can be controlled through the control valve. The second filter screen can further filter out a small amount of impurities that may be carried by the airflow to ensure the quality of the flour. The cooperation of the guide hopper and the control valve makes the collection process of the flour more orderly, reduces the waste of flour and the maintenance cost of the equipment, and improves the efficiency and automation degree of the whole impurity removal process.

[0036] Preferably, the re-separation assembly further comprises:

[0037] An airflow box fixed to the side wall of the second fixed frame and connected to the output end of the air pump;

[0038] A plurality of inclined channels linearly arranged in the interior of the airflow box;

[0039] A plurality of straight channels linearly arranged in the interior of the airflow box and respectively connected to each of the inclined channels;

[0040] After the airflow output by the air pump enters the airflow box, it forms an orderly airflow by passing through the inclined channels and the straight channels in turn. The airflow blows the flour to the recycling frame. The design of the inclined channels and the straight channels of the airflow box makes the airflow more uniform and gentle to act on the flour, reduces the breakage of the flour particles, and preserves the integrity of the flour. At the same time, the uniform airflow can more effectively separate the impurities, improve the impurity removal effect, and increase the airflow action range and the flour processing efficiency.

[0041] Preferably, the feeding assembly comprises:

[0042] A feeding hopper fixed to the top of the shell;

[0043] An outer shell fixed to the top of the shell;

[0044] A first opening formed in the top of the outer shell to connect the feeding hopper;

[0045] A rotating disc rotatably installed in the interior of the outer shell and driven by a motor on the top of the outer shell;

[0046] A storage opening formed through the interior of the rotating disc;

[0047] A second opening is arranged in the bottom of the shell to communicate the inside of the casing;

[0048] The flour enters from the upper hopper, falls into the inside of the shell through the first opening, the motor drives the rotating disc to rotate, when the storage port rotates to the first opening position, the flour enters the storage port, with the rotating disc continues to rotate, the storage port takes the flour to the second opening position, and releases the flour to the inside of the casing, realizes the intermittent quantitative feeding of the flour, through the motor driving the rotating disc to rotate, the quantitative conveying of the flour is realized by the timing opening and closing of the storage port, the accuracy of feeding is improved, the feeding speed and quantity of the flour can be effectively controlled, the first filter screen is prevented from being blocked by too much flour entering at one time, and uniform distribution of the flour on the first filter screen is ensured, which is beneficial to improve the impurity removal effect.

[0049] Preferably, the elastic vibration assembly further comprises:

[0050] Two synchronous wheels are respectively installed on the top of the top plate and the bottom of the bottom plate;

[0051] A transmission belt is installed between the two synchronous wheels;

[0052] A limiting plate is fixed between the top plate and the bottom plate, and the transmission belt passes between the limiting plates to realize limiting;

[0053] A limiting block is fixed on the transmission belt;

[0054] A gear set is installed on the top of the top plate, and the rotating disc drives the gear set to rotate;

[0055] An inclined gear set is installed between the gear set and the upper synchronous wheel, the gear set drives the inclined gear set to rotate, and the inclined gear set drives the synchronous wheel to rotate;

[0056] During operation, the motor drives the rotating disc to rotate, which in turn drives the gear set to rotate. The gear set, through a helical gear set, drives the upper synchronous pulley to rotate. The synchronous pulley is connected to the synchronous pulley below the base plate via a transmission belt, causing the transmission belt to rotate accordingly. The transmission belt is limited by limiting plates to ensure stable operation. The limiting blocks fixed on the transmission belt move with the belt. When the limiting blocks contact the vibrating plate, they push the vibrating plate to move. As the transmission belt continues to rotate, the force exerted by the limiting blocks on the vibrating plate gradually increases. When the vibrating plate moves to a certain position, it is obstructed by the top or bottom baffle. When the resistance on the vibrating plate increases to a certain extent, the limiting blocks deform and detach from the vibrating plate. At this time, the vibrating plate vibrates under the elastic action of the spring, which in turn drives the first filter screen to vibrate, promoting the filtration and impurity removal of the flour. Through the pushing of the vibrating plate by the limiting blocks, the vibrating plate can vibrate and store force after each half-turn of the rotating disc, thus maintaining the intermittent vibration of the vibrating plate and maintaining the vibration effect to improve the filtration effect of the flour.

[0057] Preferably, the elastic vibration assembly further includes:

[0058] Two electrically operated telescopic rods are fixed to the top of the two frames, respectively;

[0059] Two sets of movable baffles, the two sets of movable baffles are slidably installed inside the two frames respectively, and the two electric telescopic rods drive the two upper movable baffles to move respectively;

[0060] Two sets of screws, two screws forming a set, the two sets of screws being rotatably mounted on the ends of the two frames respectively, each screw including an upper threaded section and a lower threaded section, the upper threaded section and the lower threaded section being symmetrically arranged;

[0061] Multiple threaded sleeves are fixed to both ends of each of the movable baffles. The threaded sleeves at both ends of the upper movable baffle are threadedly connected to each of the upper threaded segments, and the threaded sleeves at both ends of the lower movable baffle are threadedly connected to each of the lower threaded segments.

[0062] A pressure sensor is installed at the bottom of the movable baffle mentioned above;

[0063] The electric telescopic rod drives the movable baffle to move in the frame, the movable baffle is connected with the screw rod through the threaded sleeve, the screw thread of the screw rod is the upper threaded section and the lower threaded section which are symmetrically arranged upwards and downwards, so that the movable baffle upwards drives the upper threaded section to rotate, thereby driving the upper threaded section to rotate synchronously, driving the movable baffle downwards to move, so that the movable baffles upwards and downwards move symmetrically and synchronously, in the vibration process of the vibration plate, the pressure sensor at the bottom of the movable baffle is pressed each time when the vibration plate impacts the movable baffle upwards, the extension end of the electric telescopic rod is triggered to elongate a specified distance each time when the pressure sensor is pressed, so that the distance between the movable baffles is reduced each time when the vibration plate vibrates, until the extension end of the electric telescopic rod is completely extended, the movable baffles are reset by the electric telescopic rod, so that the vibration plate can impact the movable baffles to generate vibration in the vibration process, thereby promoting the vibration of the first filter screen.

[0064] Preferably, the re-separation assembly further comprises:

[0065] The collecting frame is fixed to the bottom of the shell and communicates with the inside of the shell.

[0066] The collecting frame can collect the gravity-biased particulate matters such as stone after wind separation.

[0067] Compared with the prior art, the present application has the following beneficial effects:

[0068] The impurities can be avoided to be crushed and refined by the vibration screening of the elastic vibration assembly, the fine impurities are prevented from mixing into the flour to affect the purity, the problem of easy blocking and impurity refinement in the traditional filtering is effectively solved, and the flour impurity removal efficiency and quality stability are improved. BRIEF DESCRIPTION OF DRAWINGS

[0069] Figure 1 It is a whole structure schematic view of the present application.

[0070] Figure 2 It is a structure schematic view after the whole section of the present application.

[0071] Figure 3 It is a structure schematic view of the present application. Figure 2 It is an enlarged structure schematic view of A in the present application.

[0072] Figure 4 It is an enlarged structure schematic view of B in the present application. Figure 2 It is an enlarged structure schematic view of B in the present application.

[0073] Figure 5 It is a structure schematic view after the section of the shell of the present application.

[0074] Figure 6 It is an enlarged structure schematic view of C in the present application. Figure 5 It is an enlarged structure schematic view of C in the present application.

[0075] Figure 7The application discloses a kind of wheat flour impurity removal equipment, including shell 1, further comprising: Figure 5 The schematic diagram of the amplification structure at D in the application.

[0076] Figure: 1, shell;101, first filter screen;2, vibration plate;201, top plate;202, bottom plate;203, spring;204, first fixed frame;205, first connecting cloth;206, second fixed frame;207, second connecting cloth;3, frame;301, top baffle;302, bottom baffle;4, air pump;401, inclined table;5, recycling frame;501, second filter screen;502, guide hopper;503, control valve;6, airflow box;601, inclined channel;602, straight channel;7, feeding hopper;701, first opening;702, rotating disc;703, storage port;704, second opening;705, shell;706, motor;8, transmission belt;801, limit block;802, limit plate;803, synchronous wheel;804, bevel gear set;805, gear set;9, electric telescopic rod;901, moving baffle;902, screw;903, threaded sleeve;10, collection frame. DETAILED DESCRIPTION

[0077] The following description is used to disclose the present application so that those skilled in the art can implement the present application. The preferred embodiments in the following description are only as examples, and other obvious modifications can be conceived by those skilled in the art.

[0078] As Figures 1 to 7 shown in a kind of wheat flour impurity removal equipment, including shell 1, further comprising:

[0079] First filter screen 101 is installed in the inside of shell 1, for the impurity removal filtration of flour;

[0080] Elastic vibration assembly is installed between first filter screen 101 and shell 1, for promoting the filtration of flour by driving first filter screen 101 to vibrate through elastic after the top of first filter screen 101 enters the flour;

[0081] Feeding assembly is installed at the top of shell 1, for conveying flour to the top of first filter screen 101;

[0082] Separation assembly is installed at the bottom of shell 1, for the secondary airflow separation of flour after initial separation, to further remove impurities from flour;

[0083] For the wheat flour that has been ground, the method of filtration is usually used in the process of impurity removal, in order to avoid the blockage in the process of filtration, the way of turning or pushing is usually used to promote the movement of flour on filter screen in prior art, which leads to the situation that impurities contained in flour are also crushed and refined in the process of turning, increases the impurities filtered together with flour, and thus affects the impurity removal effect;

[0084] The embodiment of the present application can solve the above problems, and the specific implementation is as follows: the flour is fed into the first filter screen 101 by the feeding assembly, the elastic vibration assembly makes the filter screen vibrate at a high frequency and a low amplitude, the flour continuously rolls and moves under the action of vibration, and the impurities cannot be compacted or broken during the screening process, then the flour enters the separation assembly and is subjected to secondary separation with airflow, and finally high-purity flour is obtained. Compared with the existing technology which adopts a turning or pushing mode, the vibration screening can avoid the impurities being crushed and refined, prevent the fine impurities from being mixed into the flour to affect the purity, and further remove the light impurities through airflow separation, thereby significantly improving the impurity removal effect. The whole device has a compact structure, the screening and separation are synergistic, the problem of easy blocking and impurity refinement in the traditional filtering is effectively solved, and the flour impurity removal efficiency and quality stability are improved.

[0085] As an optional embodiment, the elastic vibration assembly comprises:

[0086] a vibration plate 2 fixed at the edge of the first filter screen 101;

[0087] a top plate 201 and a bottom plate 202 fixed at the top and the bottom of the shell 1, respectively;

[0088] two groups of springs 203 fixed between the top plate 201 and the vibration plate 2 and between the vibration plate 2 and the bottom plate 202, respectively;

[0089] a first fixed frame 204 fixed at the top of the vibration plate 2;

[0090] a first connecting cloth 205 fixedly connected between the first fixed frame 204 and the top plate 201;

[0091] a second fixed frame 206 fixed at the top of the bottom plate 202;

[0092] a second connecting cloth 207 fixed between the second fixed frame 206 and the vibration plate 2;

[0093] The vibration plate 2 is connected to the edge of the first filter screen 101, and the spring 203 of the top plate 201 and the bottom plate 202 form an elastic support structure of the spring 203-vibration plate 2. When the flour enters, the elastic deformation of the spring 203 and the inertia of the vibration plate 2 cooperate to make the first filter screen 101 produce high-frequency oscillation perpendicular to the plane of the filter screen. This oscillation not only drives the flour to roll on the surface of the filter screen, but also continuously moves downward under the combined action of gravity and vibration. The damping of the spring 203 and the flexibility of the first connecting cloth 205 and the second connecting cloth 207 jointly ensure the stability of the vibration, effectively avoiding the problem that the traditional flipping or pushing method is easy to crush impurities. At the same time, the first connecting cloth 205 and the second connecting cloth 207, the first fixed frame 204 and the second fixed frame 206 maintain the upper and lower parts of the first filter screen 101 to form two relatively independent spaces, avoiding the situation that the flour is scattered and overflowed due to vibration during the filtering process.

[0094] As an optional embodiment, the elastic vibration assembly further comprises:

[0095] Two frames 3 are symmetrically fixed to the inside of the shell 1;

[0096] Two top baffles 301 are fixed to the top of the two frames 3 respectively;

[0097] Two bottom baffles 302 are fixed to the bottom of the two frames 3 respectively;

[0098] The two sides of the vibration plate 2 are slidingly installed in the inside of the frame 3;

[0099] By symmetrically arranging the frame 3 inside the shell 1 on both sides, and installing the top baffle 301 and the bottom baffle 302 on the top and the bottom of the frame 3 respectively, and slidingly installing the two sides of the vibration plate 2 in the inside of the frame 3, the vibration plate 2 can stably slide up and down along the frame 3 when moving. When the spring 203 drives the vibration plate 2 and the first filter screen 101 to vibrate, the frame 3 provides a guide and limiting effect for the vibration plate 2, ensuring the stable movement of the vibration plate 2 in the vertical direction, preventing deviation or shaking during vibration, thereby ensuring the uniform movement of the flour on the first filter screen 101 and the screening effect. When the vibration plate 2 moves upward to the position of the top baffle 301, it is blocked by the top baffle 301, so that the vibration plate 2 collides with the top baffle 301, thereby intensifying the vibration of the vibration plate 2 to accelerate the passage of the flour and reduce the occurrence of blockage. The same applies when the vibration plate 2 moves downward.

[0100] As an optional embodiment, the re-separation assembly comprises:

[0101] The air pump 4 is fixed to the side wall of the shell 1, and the output shaft of the air pump 4 is communicated with the second fixed frame 206;

[0102] The inclined table 401 is fixed to the top of the inner wall of the second fixed frame 206 and guides the flour to the direction of the air pump 4.

[0103] When the flour falls into the second fixed frame 206 after the preliminary filtration, the inclined table 401 guides the flour to the direction of the air pump 4. When the air pump 4 is started, the airflow generated by the air pump 4 blows the flour, and the light impurities in the flour are separated out with the airflow, while the heavier flour particles continue to fall, thereby realizing secondary airflow separation and further removing the impurities in the flour. The airflow generated by the air pump 4 can blow out the lighter flour, so that the particles such as stones are left behind, thereby realizing further separation. At the same time, the guiding effect of the inclined table 401 ensures that the flour can fully contact with the airflow, thereby enhancing the separation effect. The whole reseparation process does not require manual intervention, has high automation degree, reduces the labor cost and the risk of operation errors, and ensures the quality and efficiency of flour impurity removal.

[0104] As an optional embodiment, the reseparation assembly further comprises:

[0105] The recovery frame 5 is fixed to one side of the shell 1 and is communicated with the second fixed frame 206.

[0106] The second filter screen 501 is fixed to the inside of the communication position between the recovery frame 5 and the second fixed frame 206.

[0107] The guide hopper 502 is fixed to the bottom of the recovery frame 5.

[0108] The control valve 503 is installed in the inside of the guide hopper 502.

[0109] When the flour falls into the second fixed frame 206 after the preliminary filtration, the inclined table 401 guides the flour to the direction of the air pump 4. When the air pump 4 is started, the airflow generated by the air pump 4 blows the flour, and the light impurities in the flour are separated out with the airflow, while the heavier flour particles continue to fall, thereby realizing secondary airflow separation and further removing the impurities in the flour. The airflow generated by the air pump 4 can blow out the lighter flour, so that the particles such as stones are left behind, thereby realizing further separation. At the same time, the guiding effect of the inclined table 401 ensures that the flour can fully contact with the airflow, thereby enhancing the separation effect. The whole reseparation process does not require manual intervention, has high automation degree, reduces the labor cost and the risk of operation errors, and ensures the quality and efficiency of flour impurity removal.

[0110] As an optional embodiment, the reseparation assembly further comprises:

[0111] The airflow box 6 is fixed to the side wall of the second fixed frame 206 and is communicated with the output end of the air pump 4.

[0112] The plurality of inclined channels 601 are linearly arranged in the inside of the airflow box 6.

[0113] A plurality of straight channels 602 are arranged in a linear array in the interior of the airflow box 6 and are respectively connected to the inclined channels 601;

[0114] The airflow output by the air pump 4 enters the airflow box 6, sequentially passes through the inclined channels 601 and the straight channels 602 to form an orderly airflow, which blows towards the flour and blows the flour towards the recovery frame 5. The inclined channels 601 and the straight channels 602 of the airflow box 6 are designed to make the airflow more uniform and soft to act on the flour, reduce the breakage of flour particles, and retain the integrity of the flour. At the same time, the uniform airflow can more effectively separate impurities and improve the impurity removal effect. In addition, the layout of the channel array increases the airflow action range and improves the flour processing efficiency.

[0115] As an optional embodiment, the feeding assembly comprises:

[0116] The upper hopper 7 is fixed to the top of the shell 1;

[0117] The outer shell 705 is fixed to the top of the shell 1;

[0118] The first opening 701 is arranged at the top of the outer shell 705 to communicate with the upper hopper 7;

[0119] The rotating disc 702 is rotatably installed in the interior of the outer shell 705 and is driven by the motor 706 at the top of the outer shell 705;

[0120] The storage port 703 is arranged through the interior of the rotating disc 702;

[0121] The second opening 704 is arranged at the bottom of the outer shell 705 to communicate with the interior of the shell 1;

[0122] The flour enters from the upper hopper 7, falls into the interior of the outer shell 705 through the first opening 701, and the motor 706 drives the rotating disc 702 to rotate. When the storage port 703 is rotated to the position of the first opening 701, the flour enters the storage port 703. With the continuous rotation of the rotating disc 702, the storage port 703 brings the flour to the position of the second opening 704 and releases the flour into the interior of the shell 1, realizing the intermittent and quantitative feeding of the flour. By driving the rotating disc 702 to rotate by the motor 706 and utilizing the timing opening and closing of the storage port 703, the quantitative conveying of the flour is realized, and the accuracy of the feeding is improved. This structure can effectively control the feeding speed and amount of the flour, prevent the first filter screen 101 from being blocked due to too much flour entering at one time, and ensure the uniform distribution of the flour on the first filter screen 101, which is beneficial to improve the impurity removal effect.

[0123] As an optional embodiment, the elastic vibration assembly further comprises:

[0124] Two synchronous wheels 803 are respectively installed on the top of the top plate 201 and the bottom of the bottom plate 202.

[0125] A transmission belt 8 is installed between the two synchronous wheels 803.

[0126] A limiting plate 802 is fixed between the top plate 201 and the bottom plate 202, and the transmission belt 8 passes between the limiting plate 802 to achieve limiting.

[0127] A limiting block 801 is fixed on the transmission belt 8.

[0128] A gear set 805 is installed on the top of the top plate 201, and the rotating disc 702 drives the gear set 805 to rotate.

[0129] An inclined gear set 804 is installed between the gear set 805 and the upper synchronous wheel 803, and the gear set 805 drives the inclined gear set 804 to rotate, and the inclined gear set 804 drives the synchronous wheel 803 to rotate.

[0130] When the device is in operation, the motor 706 drives the rotating disc 702 to rotate, the rotating disc 702 drives the gear set 805 to rotate, the gear set 805 drives the upper synchronous wheel 803 to rotate through the inclined gear set 804, and the synchronous wheel 803 and the synchronous wheel 803 below the bottom plate 202 are connected through the transmission belt 8, so that the transmission belt 8 rotates, the transmission belt 8 passes between the limiting plate 802 to achieve limiting, and the stable operation of the transmission belt 8 is ensured, the limiting block 801 fixed on the transmission belt 8 moves with the transmission belt 8, when the limiting block 801 contacts the vibration plate 2, the vibration plate 2 is pushed to move, with the continuous rotation of the transmission belt 8, the force of the limiting block 801 on the vibration plate 2 gradually increases, when the vibration plate 2 moves to a certain position, it is hindered by the top baffle 301 or the bottom baffle 302, the resistance of the vibration plate 2 increases to a certain extent, the limiting block 801 deforms and separates from the vibration plate 2, at this time, the vibration plate 2 vibrates under the elastic action of the spring 203, and then drives the first filter screen 101 to vibrate, so as to promote the filtration and impurity removal of the flour, through the pushing of the limiting block 801 on the vibration plate 2, the vibration plate 2 can vibrate and store power after each rotation of the rotating disc 702 by 180 degrees, so that the vibration plate 2 can vibrate intermittently, the vibration effect is maintained, and the filtration effect of the flour is improved.

[0131] As an optional embodiment, the elastic vibration assembly further comprises:

[0132] Two electric telescopic rods 9 are respectively fixed on the top of the two frames 3.

[0133] Two groups of movable baffles 901, the two movable baffles 901 are a group, and the two groups of movable baffles 901 are respectively slidably installed in the interiors of the two frames 3, and the two electric telescopic rods 9 respectively drive the two movable baffles 901 above to move.

[0134] Two groups of screw rods 902, two screw rods 902 for a group, two groups of screw rods 902 are rotatably installed at the end of two frames 3, the screw rod 902 includes an upper threaded segment and a lower threaded segment, the upper threaded segment and the lower threaded segment are symmetrically arranged;

[0135] A plurality of threaded sleeves 903 are respectively fixed to both ends of each movable baffle 901, the threaded sleeves 903 at both ends of the upper movable baffle 901 are respectively threadedly connected with each upper threaded segment, and the threaded sleeves 903 at both ends of the lower movable baffle 901 are respectively threadedly connected with each lower threaded segment;

[0136] A pressure sensor is installed at the bottom of the upper movable baffle 901;

[0137] The movable baffle 901 is moved in the frame 3 by the electric telescopic rod 9, the movable baffle 901 is connected with the screw rod 902 through the threaded sleeve 903, the screw rod 902 is provided with the upper threaded segment and the lower threaded segment which are symmetrically arranged, so that when the upper movable baffle 901 moves, the upper threaded segment is driven to rotate, thereby driving the upper threaded segment to rotate synchronously, driving the lower movable baffle 901 to move, so that the upper and lower movable baffles 901 move symmetrically and synchronously, in the vibration process of the vibration plate 2, when the vibration plate 2 impacts the upper movable baffle 901 each time, the pressure sensor at the bottom of the movable baffle 901 is pressed, and the extension end of the electric telescopic rod 9 is extended by a specified distance each time the pressure sensor is pressed, so that the distance between the movable baffles 901 is reduced each time the vibration plate 2 vibrates, and after the extension end of the electric telescopic rod 9 is completely extended, the movable baffles 901 are reset by the electric telescopic rod 9, so that the vibration plate 2 can impact the movable baffles 901 to generate vibration during the vibration process, thereby promoting the vibration of the first filter screen 101.

[0138] As an optional embodiment, the sub-separation assembly further comprises:

[0139] A collection frame 10 is fixed to the bottom of the shell 1 and communicates with the inside of the shell 1;

[0140] The collection frame 10 can collect the gravity-biased particulate matter such as stone after wind separation.

[0141] The working principle of the application is that the elastic vibration assembly makes the filter screen vibrate at high frequency and low amplitude, the flour continuously rolls under the vibration, and the impurities are not compacted or broken during the screening process, then the flour enters the separation assembly and is subjected to secondary separation with airflow, and finally high-purity flour is obtained. Compared with the existing technology which adopts a turning or pushing mode, the vibration screening can avoid the impurities being crushed and refined, prevent the fine impurities from mixing into the flour to affect the purity, and further remove the light impurities through airflow separation, thereby significantly improving the impurity removal effect. The whole device has a compact structure, the screening and separation synergistically act, effectively solves the problems of easy blocking and impurity refinement in the traditional filtering, and improves the flour impurity removal efficiency and quality stability.

[0142] The basic principle, main features and advantages of the application are shown and described above. Those skilled in the art should understand that the application is not limited by the above examples, and the above examples and descriptions in the specification are only the principles of the application. Without departing from the spirit and scope of the application, various changes and improvements can be made to the application, and these changes and improvements all fall within the scope of the claimed application.

Claims

1. A wheat flour cleaning apparatus comprising a housing (1), characterized in that, Also include: The first filter screen (101) is installed in the inside of the shell (1), and is used for removing impurities of flour; The elastic vibration assembly is installed between the first filter screen (101) and the shell (1), and is used for promoting the filtration of flour by driving the first filter screen (101) to vibrate after the flour enters the top of the first filter screen (101); The feeding assembly is installed on the top of the shell (1), and is used for conveying flour to the top of the first filter screen (101); The reseparation assembly is installed at the bottom of the shell (1), and is used for twice air flow separation of the flour after the primary separation, so as to further remove impurities of the flour.

2. A wheat flour cleaning apparatus according to claim 1, characterised in that, The elastic vibration assembly comprises: The vibration plate (2) is fixed at the edge of the first filter screen (101); The top plate (201) and the bottom plate (202) are respectively fixed at the top and the bottom of the shell (1); Two groups of springs (203) are respectively fixed between the top plate (201) and the vibration plate (2) and between the vibration plate (2) and the bottom plate (202); The first fixed frame (204) is fixed at the top of the vibration plate (2); The first connecting cloth (205) is fixedly connected between the first fixed frame (204) and the top plate (201); The second fixed frame (206) is fixed at the top of the bottom plate (202); The second connecting cloth (207) is fixed between the second fixed frame (206) and the vibration plate (2).

3. A wheat flour cleaning apparatus according to claim 2, wherein The elastic vibration assembly further comprises: Two frames (3) are symmetrically fixed on the two sides of the inside of the shell (1); Two top baffles (301) are respectively fixed at the top of the two frames (3); Two bottom baffles (302) are respectively fixed at the bottom of the two frames (3); The two sides of the vibration plate (2) are slidably installed in the inside of the frame (3).

4. A wheat flour cleaning apparatus according to claim 2, wherein The reseparation assembly comprises: The air pump (4) is fixed on the side wall of the shell (1), and the output shaft of the air pump (4) is communicated with the second fixed frame (206); The inclined table (401) is fixed on the inner wall top of the second fixed frame (206), and guides the flour to the direction of the air pump (4).

5. A wheat flour cleaning apparatus according to claim 4, characterised in that, The reseparation assembly further comprises: The recovery frame (5) is fixedly communicated on one side of the shell (1), and is communicated with the second fixed frame (206); The second filter screen (501) is fixed in the communication position between the recovery frame (5) and the second fixed frame (206); The guide bucket (502) is fixedly communicated at the bottom of the recovery frame (5); The control valve (503) is installed in the inside of the guide bucket (502).

6. A wheat flour cleaning apparatus according to claim 5, characterised in that, The reseparation assembly further comprises: The air flow box (6) is fixed on the side wall of the second fixed frame (206), and is communicated with the output end of the air pump (4); A plurality of inclined channels (601) are linearly arranged in the inside of the air flow box (6); A plurality of straight channels (602) are linearly arranged in the inside of the air flow box (6), and are respectively communicated with each inclined channel (601).

7. A wheat flour cleaning apparatus according to claim 3, wherein The feeding assembly comprises: An upper hopper (7) is fixed to the top of the shell (1); An outer shell (705) is fixed to the top of the shell (1); A first opening (701) is arranged on the top of the outer shell (705) to communicate with the upper hopper (7); A rotating disc (702) is rotatably installed in the inner part of the outer shell (705) and is driven by a motor (706) on the top of the outer shell (705); A storage opening (703) is arranged through the inner part of the rotating disc (702); A second opening (704) is arranged on the bottom of the outer shell (705) to communicate with the inner part of the shell (1).

8. A wheat flour cleaning apparatus according to claim 7, characterised in that, The elastic vibration assembly further comprises: Two synchronous wheels (803) are respectively installed on the top of the top plate (201) and the bottom of the bottom plate (202); A transmission belt (8) is transmissionally installed between the two synchronous wheels (803); A limiting plate (802) is fixed between the top plate (201) and the bottom plate (202), and the transmission belt (8) passes between the limiting plates (802) to realize limiting; A limiting block (801) is fixed on the transmission belt (8); A gear set (805) is installed on the top of the top plate (201), and the rotating disc (702) drives the gear set (805) to rotate; An inclined gear set (804) is installed between the gear set (805) and the upper synchronous wheel (803), the gear set (805) drives the inclined gear set (804) to rotate, and the inclined gear set (804) drives the synchronous wheel (803) to rotate.

9. A wheat flour cleaning apparatus according to claim 8, characterised in that, The elastic vibration assembly further comprises: Two electric telescopic rods (9) are respectively fixed on the top of the two frames (3); Two groups of movable baffles (901) are a group, and two groups of movable baffles (901) are respectively slidingly installed in the inner part of the two frames (3), and two electric telescopic rods (9) respectively drive the two movable baffles (901) above to move; Two groups of screw rods (902) are a group, and two groups of screw rods (902) are respectively rotatably installed at the ends of the two frames (3), the screw rod (902) comprises an upper threaded segment and a lower threaded segment, and the upper threaded segment and the lower threaded segment are symmetrically arranged; A plurality of threaded sleeves (903) are respectively fixed at both ends of each movable baffle (901), the threaded sleeves (903) at both ends of the movable baffle (901) above are respectively threadedly connected with each upper threaded segment, and the threaded sleeves (903) at both ends of the movable baffle (901) below are respectively threadedly connected with each lower threaded segment; A pressure sensor is installed at the bottom of the movable baffle (901) above.

10. A wheat flour cleaning apparatus according to claim 6, characterized in that, The re-separation assembly further comprises: A collection frame (10) is fixed to the bottom of the shell (1) and communicates with the inner part of the shell (1).

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