Screening structure for rice bran crushing and drying equipment

Abstract

The screening structure for the rice bran smashing and drying equipment relates to the technical field of screening structures and comprises a screening box, a plurality of first springs are arranged in the screening box, one end of each first spring is fixedly connected with the inner bottom wall of a first installation groove, and the other end of each first spring is fixedly connected with the same first push block. The side wall, away from the first spring, of the first push block is fixedly connected with a first connecting plate, one end of the first connecting plate is rotationally connected with a first screening plate through a pin shaft, and the end, away from the first connecting plate, of the first screening plate is rotationally connected with a material guide plate through a pin shaft. First springs and second springs are extruded through kinetic energy generated when rice bran falls, then the first springs and the second springs are used for driving a screening plate to vibrate up and down correspondingly, then the rice bran is prevented from being accumulated on the upper surface of the screening plate, and the rice bran is screened more thoroughly; and secondly, the vibration amplitude of the two screening plates can be manually adjusted according to the specific production condition.

Description

Technical Field

[0001] The utility model relates to the technical field of screening structures, in particular to a screening structure for a rice bran crushing and drying device. Background Art

[0002] Rice bran is a by-product obtained in the rice milling process of rice processing. It mainly consists of the outer pericarp, middle pericarp, cross-linking layer, seed coat, and germ (which may be included in some places) of rice, and is also known as rice husk, clear bran, fine bran, etc. In the process of rice processing, the part discarded from brown rice to polished rice is rice bran. The chemical components of rice bran mainly include carbohydrates, fats, and proteins, and also contain various nutrients such as vitamins.

[0003] Chinese patent document CN211636733U discloses a screening and drying device for fine salt production and preparation, including a screening box and a drying box. A crushing box is provided above the screening box. The crushing box is provided with a feed inlet. A rotor is arranged inside the crushing box. One end of the rotor passing through the crushing box is connected to a crushing motor. One end of the rotor in the crushing box is connected to a mounting plate. Crushing hammers are mounted on the mounting plate. The lower end of the crushing box is provided with a discharge port. A first filter screen is arranged at the discharge port. The discharge port communicates with the screening box. A screening plate is arranged inside the screening box. A diversion plate is arranged below the screening plate. Both the screening plate and the diversion plate are inclined. One end of the screening plate and the diversion plate is provided with a sealing plate. The other end of the screening plate and the diversion plate is provided with a support rod. A vibration motor is mounted at the lower end of the screening plate. The inclined lower end of the diversion plate communicates with the drying box through a material trough. A stirring device is arranged inside the drying box. The above screening and drying device for fine salt production and preparation has deficiencies. Although the device realizes screening, it has limitations. It only uses the screening plate for single screening, which is likely to cause some items with qualified volume that are not screened out in time and items with larger volume to pass through the screening plate and flow to the aggregate area with unqualified volume together, thus causing waste.

[0004] Therefore, in order to solve such problems, we propose a screening structure for a rice bran crushing and drying device. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a screening structure for a rice bran crushing and drying device, aiming to solve the problem in the above background art that in the existing screening and drying device for fine salt production and preparation, when in use, some items with qualified volume that are not screened out in time and items with larger volume are likely to pass through the screening plate and flow to the aggregate area with unqualified volume together.

[0006] To achieve the above object, the utility model adopts the following technical scheme: A screening structure for a rice bran crushing and drying device, including a screening box. An inlet is provided at the upper end of the screening box, a first discharge port is provided on the side wall of the screening box, and a second discharge port is provided on the side wall of the screening box. The first discharge port and the second discharge port are located on the same side wall of the screening box, and the first discharge port is directly above the second discharge port. A first installation groove is provided on the inner side wall of the screening box, and a second installation groove is provided on the inner side wall of the screening box. A number of first springs are arranged inside the screening box. One end of each first spring is fixedly connected to the bottom wall of the first installation groove, and the other end of each first spring is fixedly connected to the same first push block. The first push block is slidably connected to the inner wall of the first installation groove. A first connecting plate is fixedly connected to the side wall of the first push block away from the first spring. One end of the first connecting plate is rotatably connected to a first screening plate through a pin shaft. One end of the first screening plate away from the first connecting plate is rotatably connected to a guide plate through a pin shaft. The guide plate is rotatably connected to the inner side wall of the first discharge port through a pin shaft. A number of second springs are arranged inside the screening box. One end of each second spring is fixedly connected to the bottom wall of the second installation groove, and the other end of each second spring is fixedly connected to the same second push block. The second push block is slidably connected to the inner wall of the second installation groove. A second connecting plate is fixedly connected to the side wall of the second push block away from the second spring. One end of the second connecting plate is rotatably connected to a second screening plate through a pin shaft. One end of the second screening plate away from the second connecting plate is movably connected to the inner side wall of the second discharge port through a pin shaft. A collecting box is slidably connected to the bottom wall inside the screening box.

[0007] Preferably, a third installation groove is provided on the bottom wall inside the collecting box, and a vibration motor is fixedly connected inside the collecting box. The vibration motor is located in the third installation groove. The inner side wall of the third installation groove is hermetically and fixedly connected with a cover plate, and the upper surface of the cover plate is flush with the bottom wall inside the collecting box.

[0008] Preferably, a first sliding groove is provided inside the screening box. The first sliding groove is located outside the second discharge port. A connecting column is fixedly connected to one end of the second screening plate away from the second connecting plate. The connecting column is located in the first sliding groove, and the connecting column is slidably connected to the inner wall of the first sliding groove.

[0009] Preferably, a second sliding groove is provided at the upper end of the screening box. A first push plate is fixedly connected to the upper end of the first push block. The first push plate is located in the second sliding groove, and the first push plate is slidably connected to the inner wall of the second sliding groove.

[0010] Preferably, a third sliding groove is provided on the side wall of the screening box. A second push plate is fixedly connected to the side wall of the second push block. The second push plate is located in the third sliding groove, and the second push plate is slidably connected to the inner wall of the third sliding groove.

[0011] Preferably, the connection part of the first connecting plate and the first screening plate is not directly below the inlet.

[0012] The utility model has the following beneficial effects:

[0013] In the present utility model, two screening plates are used to screen rice bran, increasing the screening area. When the rice bran falls, the kinetic energy generated is used to squeeze the first spring and the second spring, and then the first spring and the second spring are used to drive the screening plates to vibrate up and down respectively, thereby preventing the rice bran from accumulating on the upper surface of the screening plates, making the screening of the rice bran more thorough. Secondly, a first pushing plate and a second pushing plate are provided, and the vibration of the two screening plates can be manually adjusted according to the specific production conditions, increasing the practicality. Secondly, a vibration motor is provided to prevent the rice bran from accumulating locally in the aggregate box. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a three-dimensional schematic diagram of a screening structure for a rice bran crushing and drying device proposed by the present utility model Figure 1 ;

[0015] Figure 2 is a three-dimensional schematic diagram of a screening structure for a rice bran crushing and drying device proposed by the present utility model Figure 2 ;

[0016] Figure 3 is a three-dimensional sectional view of a screening box in a screening structure for a rice bran crushing and drying device proposed by the present utility model Figure 1 ;

[0017] Figure 4 is a three-dimensional sectional view of a screening box in a screening structure for a rice bran crushing and drying device proposed by the present utility model Figure 2 ;

[0018] Figure 5 is a three-dimensional exploded view of an aggregate box in a screening structure for a rice bran crushing and drying device proposed by the present utility model.

[0019] Legend Explanation:

[0020] 1. Screening box; 101. Feed inlet; 102. First discharge port; 103. Second discharge port; 104. First installation groove; 105. Second installation groove; 106. First sliding groove; 107. Second sliding groove; 108. Third sliding groove; 11. First spring; 111. First pushing block; 112. First connecting plate; 113. First screening plate; 114. Guide plate; 12. Second spring; 121. Second pushing block; 122. Second connecting plate; 123. Second screening plate; 124. Connecting column; 2. Aggregate box; 21. Third installation groove; 22. Vibration motor; 23. Cover plate; 3. First pushing plate; 31. Second pushing plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model 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 the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0022] 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 should not be construed as a limitation of the present utility model. The terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly defined 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.

[0023] Refer to Figures 1-5, an embodiment provided by the present utility model: a screening structure for a rice bran crushing and drying device, including a screening box 1. An inlet 101 is provided at the upper end of the screening box 1, a first discharge port 102 is provided on the side wall of the screening box 1, and a second discharge port 103 is provided on the side wall of the screening box 1. The first discharge port 102 and the second discharge port 103 are located on the same side wall of the screening box 1, and the first discharge port 102 is directly above the second discharge port 103. A first installation groove 104 is provided on the inner side wall of the screening box 1, and a second installation groove 105 is provided on the inner side wall of the screening box 1. A number of first springs 11 are arranged inside the screening box 1. One end of each first spring 11 is fixedly connected to the bottom wall of the first installation groove 104, and the other end of each first spring 11 is fixedly connected to the same first push block 111. The first push block 111 is slidably connected to the inner wall of the first installation groove 104. A first connecting plate 112 is fixedly connected to the side wall of the first push block 111 away from the first spring 11. One end of the first connecting plate 112 is rotatably connected to a first screening plate 113 through a pin shaft. One end of the first screening plate 113 away from the first connecting plate 112 is rotatably connected to a guide plate 114 through a pin shaft. The guide plate 114 is rotatably connected to the inner side wall of the first discharge port 102 through a pin shaft. A number of second springs 12 are arranged inside the screening box 1. One end of each second spring 12 is fixedly connected to the bottom wall of the second installation groove 105, and the other end of each second spring 12 is fixedly connected to the same second push block 121. The second push block 121 is slidably connected to the inner wall of the second installation groove 105. A second connecting plate 122 is fixedly connected to the side wall of the second push block 121 away from the second spring 12. One end of the second connecting plate 122 is rotatably connected to a second screening plate 123 through a pin shaft. One end of the second screening plate 123 away from the second connecting plate 122 is movably connected to the inner side wall of the second discharge port 103 through a pin shaft. An aggregate box 2 is slidably connected to the bottom wall inside the screening box 1.

[0024] This setting feeds the crushed rice bran from the feed inlet 101. Then, the rice bran falls under gravity and is screened by the first screening plate 113. The rice bran with qualified volume passes through the first screening plate 113 and falls onto the upper surface of the guide plate 114, and then is collected through the first discharge port 102. Secondly, the rice bran with larger volume and some of the rice bran with qualified volume that is not screened out in time is diverted to the upper surface of the second screening plate 123 through the first screening plate 113. Then, the second screening is carried out using the second screening plate 123. The rice bran with larger volume is collected through the second discharge port 103, and the rice bran with qualified volume falls into the aggregate box 2 for collection. Secondly, both the first screening plate 113 and the second screening plate 123 utilize the kinetic energy generated by the impact of the falling rice bran on the surface, causing the first screening plate 113 to squeeze the first spring 11 through the first push block 111 and the first connecting plate 112, and the second screening plate 123 to squeeze the second spring 12 through the second push block 121 and the second connecting plate 122, so that the first spring 11 and the second spring 12 drive the first screening plate 113 and the second screening plate 123 to vibrate up and down respectively, thereby avoiding the rice bran from being pushed and crowded on the upper surfaces of the first screening plate 113 and the second screening plate 123.

[0025] A third installation groove 21 is provided on the inner bottom wall of the aggregate box 2. A vibration motor 22 is fixedly connected inside the aggregate box 2. The vibration motor 22 is located in the third installation groove 21. The inner side wall of the third installation groove 21 is hermetically and fixedly connected with a cover plate 23. The upper surface of the cover plate 23 is flush with the inner bottom wall of the aggregate box 2. The vibration motor 22 drives the rice bran inside the aggregate box 2 to vibrate, avoiding local accumulation of the rice bran.

[0026] A first sliding groove 106 is provided inside the screening box 1. The first sliding groove 106 is located outside the second discharge port 103. One end of the second screening plate 123 away from the second connecting plate 122 is fixedly connected with a connecting column 124. The connecting column 124 is located in the first sliding groove 106, and the connecting column 124 is slidably connected with the inner wall of the first sliding groove 106, so as to realize the up and down vibration of one end of the second screening plate 123 close to the second spring 12.

[0027] A second sliding groove 107 is provided at the upper end of the screening box 1. The upper end of the first push block 111 is fixedly connected with a first push plate 3. The first push plate 3 is located in the second sliding groove 107, and the first push plate 3 is slidably connected with the inner wall of the second sliding groove 107. By pressing the first push plate 3, the first push plate 3 squeezes the first spring 11 through the first push block 111, so that the first spring 11 drives the first screening plate 113 to vibrate up and down.

[0028] A third chute 108 is provided on the side wall of the screening box 1. A second push plate 31 is fixedly connected to the side wall of the second push block 121. The second push plate 31 is located in the third chute 108 and is slidably connected to the inner wall of the third chute 108. By pressing the second push plate 31, the second push plate 31 squeezes the second spring 12 through the second push block 121, so that the second spring 12 drives the second screening plate 123 to vibrate up and down.

[0029] The connection between the first connecting plate 112 and the first screening plate 113 is not located directly below the feed inlet 101 to prevent leakage of materials at the connection between the first connecting plate 112 and the first screening plate 113.

[0030] Working principle: First, the crushed rice bran is fed through the feed inlet 101. Then, the rice bran falls under gravity and is screened by the first screening plate 113. The rice bran with qualified volume falls onto the upper surface of the guide plate 114 through the first screening plate 113 and is then collected through the first discharge port 102. Secondly, the rice bran with larger volume and some of the rice bran with qualified volume that is not screened out in time is diverted to the upper surface of the second screening plate 123 through the first screening plate 113. Then, the second screening is carried out using the second screening plate 123. The rice bran with larger volume is collected through the second discharge port 103, and the rice bran with qualified volume falls into the aggregate box 2 for collection. Secondly, both the first screening plate 113 and the second screening plate 123 utilize the kinetic energy generated when the rice bran impacts the surface during falling. The first screening plate 113 squeezes the first spring 11 through the first push block 111 and the first connecting plate 112, and the second screening plate 123 squeezes the second spring 12 through the second push block 121 and the second connecting plate 122. The first spring 11 and the second spring 12 respectively drive the first screening plate 113 and the second screening plate 123 to vibrate up and down, thereby avoiding the piling up of rice bran on the upper surfaces of the first screening plate 113 and the second screening plate 123. Secondly, by pressing the first push plate 3, the first push plate 3 squeezes the first spring 11 through the first push block 111, and the first spring 11 drives the first screening plate 113 to vibrate up and down. By pressing the second push plate 31, the second push plate 31 squeezes the second spring 12 through the second push block 121, and the second spring 12 drives the second screening plate 123 to vibrate up and down.

[0031] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A screening structure for a rice bran crushing and drying device, comprising a screening box (1), characterized in that: The upper end of the screening box (1) is provided with a feed inlet (101), the side wall of the screening box (1) is provided with a first discharge outlet (102), and the side wall of the screening box (1) is provided with a second discharge outlet (103). The first discharge outlet (102) and the second discharge outlet (103) are located on the same side wall of the screening box (1), and the first discharge outlet (102) is directly above the second discharge outlet (103). The inner side wall of the screening box (1) is provided with a first installation groove (104), and the inner side wall of the screening box (1) is provided with a second installation groove (105). A number of first springs (11) are arranged inside the screening box (1). One end of each first spring (11) is fixedly connected to the inner bottom wall of the first installation groove (104), and the other end of each first spring (11) is fixedly connected to the same first push block (111). The first push block (111) is slidably connected to the inner wall of the first installation groove (104). A first connecting plate (112) is fixedly connected to the side wall of the first push block (111) away from the first spring (11). One end of the first connecting plate (112) is rotatably connected to a first screening plate (113) through a pin shaft. One end of the first screening plate (113) away from the first connecting plate (112) is rotatably connected to a guide plate (114) through a pin shaft. The guide plate (114) is rotatably connected to the inner side wall of the first discharge outlet (102) through a pin shaft. A number of second springs (12) are arranged inside the screening box (1). One end of each second spring (12) is fixedly connected to the inner bottom wall of the second installation groove (105), and the other end of each second spring (12) is fixedly connected to the same second push block (121). The second push block (121) is slidably connected to the inner wall of the second installation groove (105). A second connecting plate (122) is fixedly connected to the side wall of the second push block (121) away from the second spring (12). One end of the second connecting plate (122) is rotatably connected to a second screening plate (123) through a pin shaft. One end of the second screening plate (123) away from the second connecting plate (122) is movably connected to the inner side wall of the second discharge outlet (103) through a pin shaft. An aggregate box (2) is slidably connected to the inner bottom wall of the screening box (1).

2. The screening structure for a rice bran crushing and drying device according to claim 1, characterized in that: The inner bottom wall of the aggregate box (2) is provided with a third installation groove (21), and a vibration motor (22) is fixedly connected inside the aggregate box (2). The vibration motor (22) is located in the third installation groove (21). The inner side wall of the third installation groove (21) is hermetically and fixedly connected with a cover plate (23), and the upper surface of the cover plate (23) is flush with the inner bottom wall of the aggregate box (2).

3. A screening structure for a rice bran crushing and drying device according to claim 1, characterized in that: A first sliding groove (106) is formed inside the screening box (1). The first sliding groove (106) is located outside the second discharge outlet (103). A connecting column (124) is fixedly connected to one end of the second screening plate (123) away from the second connecting plate (122). The connecting column (124) is located in the first sliding groove (106), and the connecting column (124) is slidably connected to the inner wall of the first sliding groove (106).

4. A screening structure for a rice bran crushing and drying device according to claim 1, characterized in that: A second chute (107) is provided at the upper end of the screening box (1). A first push plate (3) is fixedly connected to the upper end of the first push block (111). The first push plate (3) is located in the second chute (107), and the first push plate (3) is slidably connected to the inner wall of the second chute (107).

5. A screening structure for a rice bran crushing and drying device according to claim 1, characterized in that: A third chute (108) is provided on the side wall of the screening box (1). A second push plate (31) is fixedly connected to the side wall of the second push block (121). The second push plate (31) is located in the third chute (108), and the second push plate (31) is slidably connected to the inner wall of the third chute (108).

6. The screening structure for a rice bran crushing and drying device according to claim 1, wherein: The connection between the first connecting plate (112) and the first screening plate (113) is not located directly below the feed inlet (101).

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