Microbial culture medium raw material screening device and method

Abstract

The invention discloses a microbial culture medium raw material screening device and method.The microbial culture medium raw material screening device comprises a supporting frame, an inclined plate is fixedly connected to the supporting frame, round holes are formed in the inclined plate, baffles are fixedly connected to the two sides of the inclined plate, and a material guide plate is arranged on the upper side of the inclined plate; the material guiding plates are located on the two sides of the upper portion of the round hole. The lower side of the inclined plate is fixedly connected with a motor frame, the lower side of the motor frame is fixedly connected with a motor, the output end of the motor is fixedly connected with a rotating shaft, the rotating shaft is rotationally connected to the motor frame through a bearing, the upper end of the rotating shaft is fixedly connected with a circular sieve plate, and the circular sieve plate is located in the circular hole; and the edge of the round hole is fixedly connected with an arc-shaped sieve plate. The multi-stage screening device has the advantage that multi-stage screening is achieved through one power source.

Description

Technical Field

[0001] The invention belongs to the technical field of material screening, and in particular relates to a device and method for screening raw materials of a microbial culture medium. Background Art

[0002] When the raw materials of microbial culture medium contain large particles of impurities, such as unground grain powder, agglomerated chemical reagents, etc., sieving can remove these impurities. For example, when using agar as a coagulant to prepare solid culture medium, if the agar contains some large particles of foreign matter, they can be sieved out through a sieve with a suitable mesh number to ensure the purity of the culture medium and prevent impurities from affecting the growth of microorganisms.

[0003] Multi-stage screening of materials is a material handling technology that grades materials through screens of different sizes to achieve the purpose of separating materials of different particle sizes. In industrial production, multi-stage screening is widely used in mining, chemical, food processing, building materials and other industries. Through multi-stage screening, raw materials or semi-finished products can be effectively divided into multiple grades according to particle size, so as to meet the requirements of material particle size in different production links. The multi-stage screening system usually includes multiple screening units, each unit is equipped with screens of different apertures to achieve continuous grading. This screening method improves the utilization rate of materials, reduces resource waste, and helps to improve the efficiency of subsequent processing and product quality.

[0004] Existing multi-stage screening technology for materials usually relies on multi-stage screens to complete the separation of different particle size levels. However, this method has some defects. First, it requires multiple power sources to drive each screen to vibrate. The setup and maintenance of each power source will increase the complexity and cost of the system. Secondly, since each screen requires an independent power source, this leads to increased energy consumption, thereby increasing operating costs. In addition, the use of multiple power sources may also cause vibration unevenness, affecting screening efficiency and accuracy. Finally, equipment maintenance and troubleshooting also become more difficult and time-consuming due to the presence of multiple power sources. Therefore, although this multi-stage screening method can achieve material classification, its defects limit its application efficiency and economy in certain occasions. Summary of the invention

[0005] In view of the problems existing in the prior art, the present invention provides a microbial culture medium raw material screening device and method, which has the advantage of achieving multi-stage screening through a power source, thereby solving the problems of the prior art.

[0006] The present invention is achieved as follows: a microbial culture medium raw material screening device comprises a support frame, an inclined plate is fixedly connected to the support frame, a circular hole is provided on the inclined plate, baffles are fixedly connected on both sides of the inclined plate, a material guide plate is provided on the upper side of the inclined plate, and the material guide plates are located on both sides above the circular hole; a motor frame is fixedly connected to the lower side of the inclined plate, a motor is fixedly connected to the lower side of the motor frame, a rotating shaft is fixedly connected to the motor frame through a bearing, a circular sieve plate is fixedly connected to the upper end of the rotating shaft, and the circular sieve plate is located in the circular hole; an arc-shaped sieve plate is fixedly connected to the edge of the circular hole.

[0007] As a preferred embodiment of the present invention, the lower side of the material guide plate extends to the upper side of the circular screen plate; and leakage holes are equidistantly provided on the material guide plate.

[0008] As a preferred embodiment of the present invention, the upper side of the material guide plate is rotatably connected to the upper side of the baffle, the lower side of the material guide plate is fixedly connected to a connecting plate, and springs are fixedly connected between the connecting plates.

[0009] As a preferred embodiment of the present invention, a discharge port is provided on the baffle, and a discharge piece is provided in the discharge port.

[0010] As a preferred embodiment of the present invention, one of the material guide plates is provided with a shifting rod, and the shifting rod is attached to the inclined plate.

[0011] As a preferred embodiment of the present invention, the discharging member is rotatably connected to the discharging port, and the upper end of the discharging member at least partially extends to the upper surface of the circular sieve plate and fits onto the upper surface of the circular sieve plate.

[0012] As a preferred embodiment of the present invention, the discharge member includes a lower plate, a first side plate, a second side plate, and an extension rod; the first side plate is rotatably connected to a side edge of the discharge port; the extension rod is fixedly connected to the lower side of the upper end of the first side plate, and the lower surface of the extension rod is attached to the upper surface of the circular screen plate; the lower plate is fixedly connected to the side of the first side plate, and the lower side of the lower plate is attached to the upper surface of the inclined plate; the second side plate is fixedly connected to the edge of the lower plate.

[0013] As a preferred embodiment of the present invention, a slot is provided at the lower edge of the discharge port close to the second side plate, and the lower plate is slidably connected to the slot.

[0014] A screening method uses the microbial culture medium raw material screening device and comprises the following steps:

[0015] The motor starts and drives the circular screen plate to reciprocate. The material is guided to the top of the circular screen plate by the guide plate. The material gradually falls down with the rotation of the circular screen plate. During the rotation of the circular screen plate, the material undergoes a screening process. Fine particles fall through the mesh of the circular screen plate and are received by the receiving plate.

[0016] The remaining materials contact the arc-shaped screen plate, and the circular screen plate reciprocates to move the materials on the arc-shaped screen plate for secondary screening.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. On the one hand, the reciprocating rotation of the circular screen plate can achieve primary screening. On the other hand, the reciprocating rotation of the circular screen plate will push the materials to move on the arc-shaped screen plate, which will perform secondary screening on these materials.

[0019] 2. The double screening effect of the circular screen plate and the arc screen plate can ensure that the fine particles in the material are fully separated; because the circular screen plate rotates back and forth, this movement mode enables the material to be screened more evenly and fully during the screening process, thus avoiding problems such as uneven screening or missed screening that may occur in traditional screening methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of a microbial culture medium raw material screening device provided in an embodiment of the present invention;

[0021] Figure 2 The embodiment of the present invention provides Figure 1 A schematic diagram of the enlarged structure of part A;

[0022] Figure 3 The embodiment of the present invention provides Figure 1 A schematic diagram of the enlarged structure of part B;

[0023] Figure 4 It is a right view schematic diagram of the structure of the microbial culture medium raw material screening device provided in an embodiment of the present invention;

[0024] Figure 5 The embodiment of the present invention provides Figure 4 Schematic diagram of the enlarged structure of part C.

[0025] In the figure: 1, support frame; 2, inclined plate; 3, round hole; 4, baffle; 5, guide plate; 6, motor frame; 7, motor; 8, rotating shaft; 9, round screen plate; 10, arc screen plate; 11, leakage hole; 12, connecting plate; 13, spring; 14, discharge port; 15, lever; 16, lower plate; 17, first side plate; 18, second side plate; 19, extension rod; 20, slot. DETAILED DESCRIPTION

[0026] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0027] The structure of the present invention is described in detail below in conjunction with the accompanying drawings.

[0028] See also Figure 1-Figure 5 A microbial culture medium raw material screening device provided by an embodiment of the present invention comprises a support frame 1, an inclined plate 2 is fixedly connected to the support frame 1, a circular hole 3 is provided on the inclined plate 2, baffles 4 are fixedly connected to both sides of the inclined plate 2, a material guide plate 5 is provided on the upper side of the inclined plate 2, and the material guide plate 5 is located on both sides above the circular hole 3; a motor frame 6 is fixedly connected to the lower side of the inclined plate 2, a motor 7 is fixedly connected to the lower side of the motor frame 6, a rotating shaft 8 is fixedly connected to the output end of the motor 7, the rotating shaft 8 is rotatably connected to the motor frame 6 through a bearing, a circular sieve plate 9 is fixedly connected to the upper end of the rotating shaft 8, and the circular sieve plate 9 is located in the circular hole 3; an arc-shaped sieve plate 10 is fixedly connected to the edge of the circular hole 3.

[0029] The microbial culture medium raw material screening device drives the circular sieve plate 9 on the rotating shaft 8 to reciprocate through the motor 7. When the materials are guided to the top of the circular sieve plate 9 by the material guide plate 5, they will gradually fall as the circular sieve plate 9 rotates. During the rotation of the circular sieve plate 9, the materials will undergo a screening, and fine particles will fall through the mesh of the circular sieve plate 9, and the materials can be received by the receiving plate. Then, the remaining materials will contact the arc sieve plate 10 fixedly connected to the edge of the circular hole 3. When the circular sieve plate 9 reciprocates, it will move the materials on the arc sieve plate 10, and these materials will be screened for the second time, thereby achieving a multi-stage screening effect.

[0030] In terms of beneficial effects, the design of this microbial culture medium raw material screening device significantly improves the screening efficiency and screening accuracy. On the one hand, through the dual screening effect of the circular screen plate 9 and the arc screen plate 10, it can be ensured that the fine particles in the material are fully separated; on the other hand, since the circular screen plate 9 is reciprocating, this movement mode enables the material to be screened more evenly and fully during the screening process, thereby avoiding problems such as uneven screening or missed screening that may occur in traditional screening methods. It should be noted that the mesh number of the circular screen plate 9 is greater than the mesh number of the arc screen plate 10.

[0031] The above-mentioned microbial culture medium raw material screening device can be used as a flour screening machine in the food processing industry. During the flour screening process, the raw flour enters the circular sieve plate 9 area from the top of the inclined plate 2 through the guide plate 5. As the circular sieve plate 9 rotates, fine particles in the flour such as bran fall into the circular holes 3 of the inclined plate 2 through the mesh of the circular sieve plate 9, and contact the arc sieve plate 10 for secondary screening. After double screening, the obtained flour is purer and more delicate, meeting the requirements of food processing. At the same time, the design of this microbial culture medium raw material screening device is also easy to clean and maintain, ensuring the hygiene and safety of the production environment.

[0032] Furthermore, the lower side of the material guide plate 5 extends to the upper side of the circular screen plate 9 , and the material guide plate 5 is provided with material leakage holes 11 at equal intervals.

[0033] The lower side of the guide plate 5 extends to the upper side of the circular screen plate 9, and the guide plate 5 is provided with leakage holes 11 at equal intervals. This design allows the material to alternately reciprocate between the two guide plates 5 under the reciprocating rotation of the circular screen plate 9, and perform a screening. The blocking effect of the guide plate 5 increases the screening time of the material on the circular screen plate 9, thereby achieving a more complete screening. When the material height reaches the leakage hole 11, the material can fall through the leakage hole 11, and further roll down to the arc screen plate 10 through the reciprocating rotation of the circular screen plate 9 for secondary screening. Through the extension of the guide plate 5 and the design of the leakage hole 11, the residence time of the material in the screening process is prolonged, the screening is more thorough, and the screening efficiency and accuracy are improved.

[0034] Furthermore, the upper side of the guide plate 5 is rotatably connected to the upper side of the baffle 4, and the lower side of the guide plate 5 is fixedly connected with a connecting plate 12, and springs 13 are fixedly connected between the connecting plates 12. The upper side of the guide plate 5 is rotatably connected to the upper side of the baffle 4, and the lower side of the guide plate 5 is fixedly connected with a connecting plate 12, and springs 13 are fixedly connected between the connecting plates 12. Such a structure allows the guide plate 5 to shake slightly under the reciprocating movement of the circular screen plate 9, thereby moving the material to fall, increasing the contact time between the material and the circular screen plate 9, and improving the screening efficiency. The shaking design of the guide plate 5 increases the contact area and time between the material and the screen plate, improves the screening effect, and at the same time, the elastic action of the spring 13 can adapt to the characteristics of different materials to ensure the uniformity of screening.

[0035] Furthermore, a discharge port 14 is provided on the baffle plate 4, and a discharge piece is provided in the discharge port 14. When the circular screen plate 9 rotates continuously clockwise, the material remaining after the secondary screening can be pushed out of the arc screen plate 10, and then can slide onto the discharge piece for discharge. The coordinated design of the discharge port 14 and the discharge piece ensures that the screened material can be discharged in time, avoids the accumulation and blockage of the material, and improves the continuous operation capacity of the microbial culture medium raw material screening device.

[0036] Furthermore, one of the guide plates 5 is provided with a lever 15, and the lever 15 is attached to the inclined plate 2. When the guide plate 5 is slightly shaken, the lever 15 can move the material thrown onto the inclined plate 2, so that the material falls into the discharge piece, thereby facilitating the discharge. The design of the lever 15 can effectively control the flow direction of the material, ensure that the material can smoothly fall into the discharge piece, and improve the efficiency and accuracy of the discharge.

[0037] Furthermore, the discharge piece is rotatably connected to the discharge port 14, and the upper end of the discharge piece at least partially extends to the circular screen plate 9 and fits the upper surface of the circular screen plate 9. When the circular screen plate 9 rotates, the discharge piece can be slightly vibrated, so that the discharge piece can be easily discharged. The close fit between the discharge piece and the circular screen plate 9 and the design of slight vibration ensure that the material can be discharged smoothly, reduce the residue of the material, and improve the screening efficiency.

[0038] Furthermore, the discharge member includes a lower plate 16, a first side plate 17, a second side plate 18, and an extension rod 19; the first side plate 17 is rotatably connected to a side edge of the discharge port 14; the extension rod 19 is fixedly connected to the lower side of the upper end of the first side plate 17, and the lower surface of the extension rod 19 is attached to the upper surface of the circular screen plate 9; the lower plate 16 is fixedly connected to the side of the first side plate 17, and the lower side of the lower plate 16 is attached to the upper surface of the inclined plate 2, and the second side plate 18 is fixedly connected to the edge of the lower plate 16.

[0039] Furthermore, the discharge port 14 is provided with a slot 20 at the lower edge near the second side plate 18, and the lower plate 16 is slidably connected to the slot 20. The lower side of the discharge port 14 is provided with a slot 20, and the lower plate 16 is slidably connected to the slot 20. This design can limit the discharge piece and does not hinder its small range swing, while preventing the material from falling to the outside of the discharge piece. The design of the slot 20 limits the discharge piece, ensures the stable operation of the discharge piece, and allows a small range of swing, thereby improving the flexibility and accuracy of material discharge.

[0040] A screening method uses the microbial culture medium raw material screening device and comprises the following steps:

[0041] The motor 7 is started to drive the circular screen plate 9 to reciprocate. The material is guided to the top of the circular screen plate 9 by the guide plate 5. The material gradually falls down with the rotation of the circular screen plate 9. During the rotation of the circular screen plate 9, the material undergoes a screening process. Fine particles fall through the mesh of the circular screen plate 9 and are received by the receiving plate.

[0042] The remaining materials contact the arc-shaped screen plate 10, and the circular screen plate 9 reciprocates to move the materials on the arc-shaped screen plate 10 for secondary screening.

[0043] Working principle of the present invention:

[0044] First, the motor 7 drives the rotating shaft 8 to rotate, and the rotating shaft 8 drives the circular screen plate 9 to reciprocate. The material is guided by the guide plate 5 to the top of the circular screen plate 9, and as the circular screen plate 9 rotates, the material gradually falls. During the rotation process, fine particles fall through the mesh of the circular screen plate 9 and fall into the receiving tray. Larger particles that do not pass through the circular screen plate 9 continue to fall and contact the arc screen plate 10. The reciprocating rotation of the circular screen plate 9 moves the material on the arc screen plate 10 for secondary screening. In this way, the device achieves a multi-stage screening effect on the material and improves the screening efficiency and accuracy.

[0045] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A microbial culture medium raw material screening device, comprising a support frame (1), characterized in that: The support frame (1) is fixedly connected to an inclined plate (2), a circular hole (3) is provided on the inclined plate (2), baffles (4) are fixedly connected to both sides of the inclined plate (2), a material guide plate (5) is provided on the upper side of the inclined plate (2), and the material guide plate (5) is located on both sides above the circular hole (3); The lower side of the inclined plate (2) is fixedly connected to a motor frame (6), the lower side of the motor frame (6) is fixedly connected to a motor (7), the output end of the motor (7) is fixedly connected to a rotating shaft (8), the rotating shaft (8) is rotatably connected to the motor frame (6) via a bearing, the upper end of the rotating shaft (8) is fixedly connected to a circular sieve plate (9), and the circular sieve plate (9) is located in the circular hole (3); An arc-shaped sieve plate (10) is fixedly connected to the edge of the circular hole (3).

2. A microbial culture medium raw material screening device as claimed in claim 1, characterized in that: The lower side of the guide plate (5) extends to the upper side of the circular screen plate (9); The material guide plate (5) is provided with material leakage holes (11) at equal intervals.

3. A microbial culture medium raw material screening device as claimed in claim 2, characterized in that: The upper side of the guide plate (5) is rotatably connected to the upper side of the baffle (4), the lower side of the guide plate (5) is fixedly connected to a connecting plate (12), and springs (13) are fixedly connected between the connecting plates (12).

4. A microbial culture medium raw material screening device as claimed in claim 3, characterized in that: The baffle plate (4) is provided with a discharge port (14), and a discharge piece is provided in the discharge port (14).

5. A microbial culture medium raw material screening device as claimed in claim 4, characterized in that: A shifting rod (15) is provided on one of the guide plates (5), and the shifting rod (15) is attached to the inclined plate (2).

6. A microbial culture medium raw material screening device as claimed in claim 5, characterized in that: The discharge member is rotatably connected to the discharge port (14), and the upper end of the discharge member at least partially extends onto the circular screen plate (9) and fits onto the upper surface of the circular screen plate (9).

7. A microbial culture medium raw material screening device as claimed in claim 6, characterized in that: The material discharging member comprises a lower plate (16), a first side plate (17), a second side plate (18), and an extension rod (19); The first side plate (17) is rotatably connected to a side edge of the discharge port (14); The extension rod (19) is fixedly connected to the lower side of the upper end of the first side plate (17), and the lower surface of the extension rod (19) is in contact with the upper surface of the circular screen plate (9); The lower plate (16) is fixedly connected to the side of the first side plate (17), and the lower side of the lower plate (16) is attached to the upper surface of the inclined plate (2); The second side plate (18) is fixedly connected to the edge of the lower plate (16).

8. A microbial culture medium raw material screening device as claimed in claim 7, characterized in that: The discharge port (14) is provided with a slot (20) near the lower edge of the second side plate (18), and the lower plate (16) is slidably connected to the slot (20).

9. A screening method, characterized in that: The microbial culture medium raw material screening device according to any one of claims 1 to 8 is used, and comprises the following steps: The motor (7) is started to drive the circular screen plate (9) to reciprocate, and the material is guided to the top of the circular screen plate (9) by the material guide plate (5). The material gradually falls down as the circular screen plate (9) rotates. During the rotation of the circular screen plate (9), the material is screened once, and fine particles fall through the mesh of the circular screen plate (9) and are received by a receiving plate. The remaining material contacts the arc-shaped screen plate (10), and the circular screen plate (9) reciprocates to move the material on the arc-shaped screen plate (10) for secondary screening.

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