Double-bin sieve with novel vibration structure

Abstract

The utility model belongs to the technical field of flour screening devices, and particularly relates to a double-bin screen with a novel vibration structure, which comprises a rack, two screen boxes arranged on the rack and a driving device used for driving the two screen boxes to vibrate, the screen boxes are adjustably connected to the rack, and the two screen boxes are arranged on the rack. The driving device comprises a driving motor, a crankshaft and a driving disc coaxially connected to the crankshaft, and a plurality of vibration driving grooves and vibration driving protrusions are arranged on the driving disc in the circumferential direction, wherein the vibration driving grooves and the vibration driving protrusions are alternately arranged. Driving blocks which are always close to and matched with the circumferential face of the driving disc are arranged on the side faces, close to each other, of the two screening boxes, in the rotating process of the driving disc, the driving blocks move in a reciprocating mode along with fluctuation of the vibration driving grooves and the vibration driving protrusions, and then the driving blocks drive the screening boxes to move in a reciprocating mode to achieve vibration. The double-bin screen is used for solving the technical problem that an existing double-bin screen is low in vibration frequency.

Description

Technical Field

[0001] The utility model belongs to the technical field of flour screening devices, and particularly relates to a double-bin sieve with a novel vibration structure. Background Technique

[0002] The grinding of wheat includes processes such as cleaning and soaking, grinding, screening and grading, flour milling and adjustment. Among them, screening and grading are required after grinding, and screening devices such as double-bin sieves are needed in this process.

[0003] In the prior art, a patent application with the patent name "A Double-bin High-efficiency Planar Sieve", authorization announcement number CN 209866635U, and authorization announcement date December 31, 2019 is disclosed. It includes a frame, two groups of sieve boxes and a transmission device. The two groups of sieve boxes are symmetrically installed on the frame. The transmission device is installed on the frame and is connected to the two groups of sieve boxes at the output end of the transmission device. Placement cavities are arranged inside the two groups of sieve boxes, and a feed inlet and a discharge outlet are respectively arranged at the top and bottom of the sieve box; it also includes a bottom plate and a vibration device. The vibration device includes a left support plate, a right support plate, two groups of fixed columns, two groups of sliding rods, two groups of left springs and two groups of right springs. Multiple groups of first sieve bodies and multiple groups of second sieve bodies are arranged alternately in the placement cavity. It also includes a first vertical box, a second vertical box, multiple groups of left discharge pipes and multiple groups of right discharge pipes. Discharge ports are communicated at the bottom ends of the first vertical box and the second vertical box. This application can improve the efficiency of grain screening.

[0004] However, in the above prior art, the sieve box is driven to vibrate by a transmission device. The transmission device not only has a complex structure, but also the sieve box can only reciprocate once when the second rotating shaft rotates one circle, making it difficult to drive the sieve box to vibrate at a high frequency, and the use flexibility is poor. Content of the Utility Model

[0005] Aiming at the deficiencies in the prior art, the purpose of the utility model is to provide a double-bin sieve with a novel vibration structure to solve the technical problem of the low vibration frequency of the current double-bin sieve.

[0006] To achieve the above object, the technical solution of the present utility model is: a double-bin sieve with a novel vibration structure, which includes a frame, two sieve boxes arranged on the frame, and a driving device for driving the two sieve boxes to vibrate. The sieve boxes are adjustably connected to the frame. The driving device includes a driving motor, a machine shaft, and a driving disk coaxially connected to the machine shaft. A plurality of vibration driving grooves and vibration driving protrusions alternating with the vibration driving grooves are circumferentially arranged on the driving disk, and there is a smooth transition between adjacent vibration driving grooves and vibration driving protrusions. Driving blocks are arranged on the sides of the two sieve boxes close to each other and are always in close fit with the circumferential surface of the driving disk. During the rotation of the driving disk, the driving blocks reciprocally move up and down with the undulations of the vibration driving grooves and vibration driving protrusions, and thus the driving blocks drive the sieve boxes to reciprocally move to achieve vibration.

[0007] Preferably, the driving block is provided with a "concave"-shaped connecting piece, and the gripping feet at both ends of the connecting piece extend into the sliding grooves arranged on the upper and lower sides of the driving disk.

[0008] Preferably, the number of the vibration driving grooves and the vibration driving protrusions is an even number.

[0009] Preferably, a rotating shaft extending forward and backward is arranged at the bottom of the sieve box and is connected to the frame through the rotating shaft to realize the adjustable connection between the sieve box and the frame.

[0010] Preferably, a torsion spring is arranged on the rotating shaft to ensure the reset after the rotation of the rotating shaft.

[0011] Preferably, an auxiliary stabilizing shaft extending forward and backward is arranged at the top of the sieve box and is matched with an auxiliary stabilizing groove arranged on the frame; the auxiliary stabilizing groove is arc-shaped.

[0012] Preferably, a reset elastic member is arranged between the auxiliary stabilizing shaft and the frame.

[0013] The beneficial effects of adopting the technical solution of the present utility model are as follows:

[0014] The present utility model drives the two sieve boxes to vibrate through the driving device. The driving device includes a machine shaft driven by a driving motor and a driving disk coaxially connected to the machine shaft. A plurality of vibration driving grooves and vibration driving protrusions are circumferentially arranged on the driving disk, and the vibration driving protrusions and the vibration driving grooves are arranged alternately. The driving disk is in contact and cooperation with the driving blocks arranged on the side walls of the sieve boxes. During the rotation of the driving disk, the driving blocks reciprocally move up and down with the undulations of the vibration driving grooves and vibration driving protrusions to drive the sieve boxes to vibrate. In this way, during one rotation of the driving disk, the driving blocks will complete multiple reciprocating movements, and the high-frequency vibration of the sieve boxes can be realized without the need for the driving motor to rotate at a high frequency, improving the vibration effect and adjustment flexibility. Brief Description of the Drawings

[0015] Figure 1 It is a front view schematic diagram of an embodiment of a double - bin sieve with a new vibration structure;

[0016] Figure 2 It is Figure 1 a partial schematic diagram of;

[0017] Figure 3 It is a top - view schematic diagram of an embodiment of a double - bin sieve with a new vibration structure.

[0018] Among them, Figures 1-3 in, 1 - frame, 2 - sieve box, 3 - rotating shaft, 4 - torsion spring, 5 - auxiliary stabilizing shaft, 6 - reset elastic member, 7 - auxiliary stabilizing groove, 8 - protective plate, 9 - driving motor, 10 - machine shaft, 11 - driving disc, 12 - driving block, 13 - support plate, 14 - vibration driving projection, 15 - vibration driving groove, 16 - sliding groove, 17 - connecting member. Detailed Embodiment

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments, and do not limit the scope of the present utility model.

[0020] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model.

[0021] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0022] The specific embodiments are as follows:

[0023] Embodiment 1, as Figures 1-3As shown in the figure, a double-bin sieve with a novel vibration structure, which includes a frame 1, a sieve box 2 and a driving device. There are two sieve boxes 2, and the sieve boxes 2 are adjustably connected to the frame 1. The driving device is arranged between the two sieve boxes 2, and the driving device drives the sieve boxes 2 to vibrate to complete screening.

[0024] The driving device includes a driving motor 9, a machine shaft 10 and a driving disc 11. A support plate 13 is horizontally arranged at the lower part of the frame 1, the driving motor 9 is fixedly arranged on the support plate 13, and the upper end of the machine shaft 10 of the driving motor 9 is coaxially connected with the driving disc 11. A plurality of vibration driving grooves 15 and vibration driving protrusions 14 are arranged on the driving disc 11 along the circumferential direction. The vibration driving grooves 15 and the vibration driving protrusions 14 are arranged alternately, and a smooth transition is adopted between adjacent vibration driving grooves 15 and vibration driving protrusions 14.

[0025] Driving blocks 12 are arranged on the side walls of the two sieve boxes 2 close to each other. The driving blocks 12 are in sliding fit with the driving disc 11 and always close to the circumferential surface of the driving disc 11. When the driving disc 11 rotates, its circumferential surface approaches the driving block 12 and moves relatively. More specifically, sliding grooves 16 are arranged on the upper and lower side surfaces of the driving disc 11 close to the edge, and a "concave"-shaped connecting piece 17 is arranged on the driving block 12. The gripping feet at both ends of the connecting piece 17 extend into the sliding grooves 16, so that when the driving disc 11 rotates, the connecting piece of the driving block 12 moves in the sliding grooves 16, and undulates between the circumferential vibration driving grooves 15 and vibration driving protrusions 14 of the driving disc 11, driving the driving block to make a reciprocating movement in the horizontal direction, and then driving the sieve box 2 to vibrate left and right.

[0026] When the double-bin sieve with a novel vibration structure in this embodiment works, the driving motor 9 drives the driving disc 11 to rotate. The gripping feet of the driving block 12 extend into the sliding grooves 16 of the driving disc 11, so that the driving disc 11 rotates relative to the driving block 12. Due to the undulating trend of the sliding grooves 16, the driving block 12 makes a horizontal reciprocating movement, and then drives the sieve box 2 to reciprocate to realize vibration screening. Since a plurality of vibration driving grooves 15 and vibration driving protrusions 14 are arranged on the circumferential direction of the driving disc 11, the driving block 11 will complete a reciprocating movement every time it passes through a pair of vibration driving grooves 15 and vibration driving protrusions 14. In this way, the vibration frequency of the sieve box 2 is much greater than the rotation speed of the driving motor 9. By slightly adjusting the rotation speed of the driving motor 9, a large increase in the vibration frequency of the sieve box can be realized. It is not only convenient and flexible to adjust, but also can improve the screening effect.

[0027] Furthermore, the vibration driving grooves 15 and the vibration driving protrusions 14 are both arranged in an even number, which makes the vibration driving grooves 15 symmetric with each other and the vibration driving protrusions 14 symmetric with each other on the driving disc 11 all the time, so that the two sieve boxes 2 vibrate at the same frequency, or vibrate in the same direction, or vibrate in the opposite direction.

[0028] Furthermore, a rotating shaft 3 extending in the front-rear direction is provided at the bottom of the sieve box 2. The rotating shaft 3 is rotatably connected to the frame 1. In this way, when the driving motor 9 drives the sieve box 2 to vibrate, the sieve box 2 swings left and right with the rotating shaft 3 as the axis to perform vibration. Such a vibration method will prompt the flour to gather towards the middle of the sieve mesh, making the screening more sufficient.

[0029] It should be noted that to ensure the smooth left-right swing of the sieve box 2, the setting of the chute 16 should be larger than the gripping feet of the connecting piece 17.

[0030] Furthermore, a torsion spring 4 is provided on the rotating shaft 3 to provide a return force for the sieve box 2, which not only ensures that the sieve box 2 can swing back smoothly but also provides a buffer force when the sieve box swings to the extreme position.

[0031] Furthermore, an auxiliary stabilizing shaft 5 extending in the front-rear direction is provided at the top of the sieve box 2, and arc-shaped auxiliary stabilizing grooves 7 are provided on the front and rear sides of the frame 1. The auxiliary stabilizing shaft 5 is connected in the auxiliary stabilizing grooves 7. When the sieve box 2 swings left and right, the auxiliary stabilizing shaft 5 reciprocates in the auxiliary stabilizing grooves 7 to ensure the safety of the swing of the sieve box 2.

[0032] Furthermore, a reset elastic member 6 is provided between both sides of the auxiliary stabilizing shaft 5 and the frame 1 to provide buffering and return force to prevent the sieve box 2 from having a rigid collision.

[0033] In other embodiments, the sieve box is slidably connected to the frame in a left-right sliding manner, and an elastic member is provided on the sliding track of the sieve box to provide elastic buffering. The driving motor drives the driving disk to rotate, the driving disk drives the driving block to move horizontally left and right, and the driving block drives the sieve box to move horizontally left and right to complete the vibration. Other structures will not be elaborated here.

[0034] The above has made an exemplary description of the present utility model in conjunction with the accompanying drawings. Obviously, the specific implementation of the present utility model is not limited by the above methods. As long as various non-substantive improvements are made by adopting the technical solution of the present utility model, or the concept and technical solution of the present utility model are directly applied to other occasions without improvement, they are all within the protection scope of the present utility model.

Claims

1. A double-chamber sieve with a novel vibration structure, the double-chamber sieve comprising a frame, two sieve boxes disposed on the frame, and a driving device for driving the two sieve boxes to vibrate, characterized in that, The sieve box is adjustably connected to the frame. The driving device includes a driving motor, a machine shaft, and a driving disk coaxially connected to the machine shaft. A plurality of vibration driving grooves and vibration driving protrusions alternately arranged with the vibration driving grooves are circumferentially provided on the driving disk, and a smooth transition is provided between adjacent vibration driving grooves and vibration driving protrusions. Driving blocks that are always closely fitted to the circumferential surface of the driving disk are provided on the side surfaces of the two sieve boxes close to each other. During the rotation of the driving disk, the driving blocks reciprocally move up and down with the undulations of the vibration driving grooves and vibration driving protrusions, and thus the driving blocks drive the sieve box to reciprocally move to achieve vibration.

2. The double-chamber sieve with a novel vibration structure according to claim 1, characterized in that, The driving block is provided with a "concave"-shaped connecting member, and the gripping feet at both ends of the connecting member extend into the sliding grooves provided on the upper and lower side surfaces of the driving disk.

3. The double-bin sieve with a novel vibration structure according to claim 2, characterized in that, The number of the vibration driving grooves and the vibration driving protrusions provided is an even number.

4. A double-chamber sieve with a novel vibration structure according to any one of claims 1-3, characterized in that, A rotating shaft extending forward and backward is provided at the bottom of the sieve box and is connected to the frame through the rotating shaft to achieve an adjustable connection between the sieve box and the frame.

5. The double-chamber sieve with a novel vibration structure according to claim 4, characterized in that, A torsion spring is provided on the rotating shaft to ensure that the rotating shaft resets after rotation.

6. The double-chamber sieve with a novel vibration structure according to claim 5, characterized in that, An auxiliary stabilizing shaft extending forward and backward is provided at the top of the sieve box and is matched with an auxiliary stabilizing groove provided on the frame; the auxiliary stabilizing groove is arc-shaped.

7. The double-bin sieve with a novel vibration structure according to claim 6, characterized in that, A reset elastic member is provided between the auxiliary stabilizing shaft and the frame.

Images