A vibration screening device for processing raw materials of mushrooms

Abstract

This utility model discloses a vibrating screening device for mushroom processing raw materials, including a screen, which is elastically installed on one end of the top of a frame and kept horizontal; a screen plate, which is inclinedly set at the other end of the top of the frame and positioned below the discharge port of the screen; a vibration mechanism set at both ends of the bottom of the screen to vibrate the screen; and a screening drum, which is rotatably installed above the screen plate. This vibrating screening device, through the vibration mechanism at the bottom of the screen, can vibrate the screen at different frequencies, facilitating the shaking off and discharge of some soil adhering to the outer end of the mushroom raw materials. Simultaneously, combined with the screen plate and screening drum, it can perform secondary screening of the mushroom raw materials to separate out any mixed leaves.

Description

Technical Field

[0001] This utility model relates to the field of mushroom screening technology, specifically a vibrating screening device for mushroom processing raw materials. Background Technology

[0002] In the processing of edible mushrooms, raw material pretreatment is a crucial step in ensuring the quality of subsequent processing, and effectively removing impurities adhering to the surface of the mushrooms is one of the core tasks of the pretreatment stage. Existing edible mushrooms, especially wild mushrooms, typically have a large amount of dirt, dust, leaves, and other impurities adhering to their surface after harvesting. If these impurities are not effectively treated before entering the washing process, it will not only increase the difficulty and reduce the efficiency of washing, but may also affect the quality of the final product due to the residue of these impurities. Therefore, screening the mushrooms before the washing operation to remove a large amount of impurities such as dirt and leaves is an important prerequisite for improving the processing efficiency and quality of edible mushrooms.

[0003] Currently, the conventional screening method for edible mushrooms is vibration screening. The core principle of this technology is: a horizontally or inclined screen is used as the supporting component to hold the mushrooms to be screened. A vibrating motor installed at the bottom of the screen provides power, driving the screen to vibrate at high frequency. Under the action of vibration, the mushrooms move continuously on the screen surface and gradually move towards the discharge port of the screen, thus achieving continuous screening of the mushrooms. The screen openings can separate impurities such as soil and fine dust smaller than the screen openings, while the mushrooms are conveyed to the discharge port by the vibration to complete the screening.

[0004] However, in practical applications, this vibration screening method has obvious technical defects: on the one hand, for impurities such as leaves mixed in with the mushrooms, because their size is similar to some mushrooms or their shape is special, it is difficult to effectively separate them through the sieve holes, causing the leaves and other impurities to easily enter the subsequent stages along with the mushrooms, affecting the screening effect; on the other hand, the sieve shakes at the same frequency throughout the screening process, which may result in some impurities not being fully separated, making it difficult to guarantee the screening quality. Utility Model Content

[0005] Therefore, in order to overcome the above-mentioned shortcomings, this utility model provides a vibrating screening device for mushroom processing raw materials. The screening device uses a screen and a screen plate to screen mushrooms. Combined with the rotating screening drum above the screen plate, the screen can separate smaller impurities (such as dust and soil) mixed in with the mushrooms. The screen plate and screening drum can separate larger impurities (such as leaves) mixed in with the mushrooms. At the same time, the vibration mechanism can vibrate different positions at the bottom of the screen, which makes it easy to adjust the vibration frequency, thereby facilitating the shaking and dispersion of the mushrooms and the discharge of mixed impurities.

[0006] This utility model is implemented as follows: a vibrating screening device for mushroom processing raw materials is constructed, including a screen that is elastically installed on one end of the top of the frame and kept horizontally arranged. The sieve plate is inclined and set at the other end of the top of the frame and below the discharge port of the sieve. A vibration mechanism is installed at both ends of the bottom of the screen to vibrate the screen. The screening drum is rotatably mounted above the screen plate.

[0007] Preferably, the screen is rectangular in shape, with an opening on the side of the screen closest to the screen plate, and screening holes are evenly distributed at the bottom of the screen. The four corners of the bottom of the screen are connected to the top of the frame through connecting seats and elastic elements.

[0008] Preferably, the sieve plate is an arc-shaped plate structure with its concave surface facing upwards. The screening roller corresponds to the concave surface of the sieve plate. Strip-shaped screening holes are provided on the screening plate. The length direction of the strip-shaped screening holes is adapted to the rotation direction of the screening roller. Screening rods are evenly arranged on the outer end of the screening roller.

[0009] Preferably, the vibration mechanism includes a vibrating drum and a vibrating cam. The vibrating drum is rotatably disposed below the open end of the screen and above the screen plate. Multiple vibrating rods are evenly disposed on the outer end of the vibrating drum. The vibrating rods are bent and the bending direction is consistent with the material movement direction above the screen. The vibrating cam is rotatably disposed below the other end of the bottom of the screen and mounted on the frame.

[0010] Preferably, a collecting trough is provided below the screen and screen plate, a discharge conveyor belt is provided below the discharge port of the collecting trough, and a negative pressure fan is provided on the outside of the gap between the discharge port of the collecting trough and the discharge conveyor belt.

[0011] Preferably, a transmission wheel is provided on the outer end of the shaft where the screening drum, vibrating drum, vibrating cam and negative pressure fan are located, and a drive wheel is provided on the inner end of the frame. The drive wheel is driven to rotate by a drive motor and is connected to the transmission wheel.

[0012] Compared with the prior art, the present invention has the following advantages: This screening device employs a double-layer screening structure combining a screen and a screen plate, along with a rotating screening drum above the screen plate, forming a grading mechanism for impurities of different sizes. The screen can accurately separate smaller impurities such as dust and soil from the mushrooms, while the synergistic effect of the screen plate and screening drum effectively separates larger impurities such as leaves. This solves the problem of separating impurities like leaves in existing vibrating screening methods, significantly improving the impurity removal rate.

[0013] Meanwhile, by setting up a vibration mechanism that can vibrate different positions at the bottom of the screen, the vibration frequency and vibration area of ​​the screen can be flexibly adjusted. This design allows the mushrooms to be fully shaken and dispersed on the screen, avoiding the phenomenon of impurities being wrapped up due to mushroom accumulation, ensuring that impurities can be completely discharged, thereby guaranteeing the stability of screening quality and overcoming the problem of incomplete screening caused by traditional screens vibrating at a fixed frequency. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the specific embodiments of the present invention to explain the present invention, but do not constitute any limitation on the present invention. In the drawings: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a structural schematic diagram of the present invention viewed from the front. Figure 3 This is a side view of the structure of this utility model; Figure 4 yes Figure 3 Schematic diagram of the structure of section AA in the middle; Figure 5 This is a schematic diagram of the structure of the sieve plate and the screening drum in this utility model; In the diagram: 1. Frame; 2. Screen; 3. Collection trough plate; 4. Discharge conveyor belt; 5. Negative pressure fan; 6. Screening drum; 7. Connecting seat; 8. Elastic element; 9. Vibrating drum; 10. Screen plate; 11. Drive wheel; 12. Transmission wheel; 13. Drive motor; 14. Vibrating cam. Detailed Implementation

[0015] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only for illustration and explanation of this utility model and are not intended to limit this utility model in any way. The accompanying drawings in this utility model are only for illustrative purposes and to facilitate understanding of the embodiments and are not intended to limit this utility model in any way.

[0016] It should be noted that the structures, proportions, sizes, etc. shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0017] As described in the background section, existing vibrating screening devices typically vibrate the screen at a fixed frequency. When mushrooms are placed inside the screen for screening, the fixed frequency vibration makes it difficult to break up the mushrooms, thus making it difficult to remove impurities. Furthermore, existing screens can only remove smaller impurities, while larger impurities such as leaves are difficult to separate.

[0018] For the reasons stated above, please refer to the appendix for solutions to these problems. Figure 1 ~Appendix Figure 4 This utility model provides a vibrating screening device for mushroom processing raw materials, including a screen 2, which is elastically installed on one end of the top of the frame 1 and kept horizontally arranged; The sieve plate 10 is inclinedly set at the other end of the top of the frame 1 and below the discharge port of the sieve 2; A vibration mechanism is installed at both ends of the bottom of the screen 2 to vibrate the screen 2; The screening drum 6 is rotatably mounted above the screen plate 10.

[0019] Please refer to the appendix carefully. Figure 1 To facilitate continuous screening of mushrooms, the screen 2 is rectangular in shape, with an opening on the side of the screen 2 near the screen plate 10, and screening mesh holes are evenly distributed at the bottom of the screen 2. The four corners of the bottom of the screen 2 are connected to the top of the frame 1 through connecting seats 7 and elastic members 8.

[0020] Please see the appendix Figure 5 To facilitate the screening of leaves mixed with mushrooms, the sieve plate 10 is an arc-shaped plate structure with its concave surface facing upwards. The screening roller 6 corresponds to the concave surface of the sieve plate 10. Strip-shaped screening holes are provided on the sieve plate 10. The length direction of the strip-shaped screening holes is adapted to the rotation direction of the screening roller 6. Screening rods are evenly arranged on the outer end of the screening roller 6.

[0021] Please see the appendix Figure 4 To facilitate vibration screening of the screen at different frequencies, the vibration mechanism includes a vibrating drum 9 and a vibrating cam 14. The vibrating drum 9 is rotatably disposed below the open end of the screen 2 and above the screen plate 10. Multiple vibrating rods are evenly disposed on the outer end of the vibrating drum 9. The vibrating rods are bent and the bending direction is consistent with the material movement direction above the screen 2. The vibrating cam 14 is rotatably disposed below the other end of the bottom of the screen 2 and is mounted on the frame 1.

[0022] Please see the appendix Figure 1 and attached Figure 2To facilitate the centralized discharge of screened impurities, a collection trough plate 3 is provided below the screen 2 and the screen plate 10. A discharge conveyor belt 4 is provided below the discharge port of the collection trough plate 3. A negative pressure fan 5 is provided on the outside of the gap between the discharge port of the collection trough plate 3 and the discharge conveyor belt 4.

[0023] Please refer to the appendix again. Figure 1 and attached Figure 2 To facilitate the synchronous operation of the components, transmission wheels 12 are provided on the outer ends of the shafts where the screening drum 6, vibrating drum 9, vibrating cam 14 and negative pressure fan 5 are located. The inner end of the frame 1 is provided with a drive wheel 11. The drive wheel 11 is driven to rotate by the drive motor 13 and is connected to the transmission wheel 12.

[0024] The screening device is used as follows: First, start the drive motor 13 to move all components, and place the mushroom raw material to be screened into the screen 2. The rotation of the vibrating roller 9 causes the outer vibrating rod to frequently contact the bottom of the screen 2, achieving the first vibration of the screen 2. Simultaneously, the synchronously rotating vibrating cam 14, through repeated contact between the outermost end of the cam 14 and the bottom of the screen 2, achieves the second vibration of the screen 2, thus achieving different frequency vibrations of the screen 2. During the vibration process, the accumulated mushrooms are dispersed and moved towards the side outlet, while the mixed soil and dust are shaken off and fall through the screening mesh into the collection trough 3 below. Dust is collected from the negative... The blower 5 sucks out the mud, while the larger pieces fall onto the discharge conveyor belt 4 and are transported out. The mushrooms on the screen 2 move towards the outlet and are discharged under vibration, falling onto the screen plate 10. Since the screen plate 10 has strip-shaped screening holes, it is easy to discharge the leaves. Through the rotation of the screening drum 6, the screening rod at the outer end of the screening drum 6 lifts the mushrooms and throws them upward, thus separating the leaves. Finally, the leaves pass through the strip-shaped screening holes and fall into the collection trough 3, while the mushrooms, under the rotation of the screening drum 6 and the support of the screening rod, finally fall from the outer side of the screen plate 10, thus separating the mushrooms from the leaves. This allows for continuous screening of mushrooms.

[0025] The above description is a detailed description of the preferred embodiments of the present utility model. However, the embodiments are not intended to limit the scope of the patent application of the present utility model. All equivalent changes or modifications made under the technical spirit of the present utility model should fall within the patent scope covered by the present utility model.

Claims

1. A vibrating screening device for mushroom processing raw materials, characterized in that: include, The screen is flexibly installed on one end of the top of the frame and kept horizontal. The sieve plate is inclined and set at the other end of the top of the frame and below the discharge port of the sieve. A vibration mechanism is installed at both ends of the bottom of the screen to vibrate the screen. The screening drum is rotatably mounted above the screen plate.

2. The mushroom processing raw material vibration screening device according to claim 1, characterized in that: The screen is rectangular in shape, with an opening on the side of the screen closest to the screen plate. Screening holes are evenly distributed at the bottom of the screen. The four corners of the bottom of the screen are connected to the top of the frame through connecting seats and elastic elements.

3. The mushroom processing raw material vibration screening device according to claim 2, characterized in that: The sieve plate is an arc-shaped plate structure with its concave surface facing upwards. The screening roller corresponds to the concave surface of the sieve plate. Strip-shaped screening holes are provided on the screening plate. The length direction of the strip-shaped screening holes is adapted to the rotation direction of the screening roller. Screening rods are evenly arranged on the outer end of the screening roller.

4. The mushroom processing raw material vibration screening device according to claim 3, characterized in that: The vibration mechanism includes a vibrating drum and a vibrating cam. The vibrating drum is rotatably disposed below the open end of the screen and above the screen plate. Multiple vibrating rods are evenly disposed on the outer end of the vibrating drum. The vibrating rods are bent and the bending direction is consistent with the material movement direction above the screen. The vibrating cam is rotatably disposed below the other end of the bottom of the screen and is mounted on the frame.

5. The mushroom processing raw material vibration screening device according to claim 4, characterized in that: A collection trough is provided below the screen and screen plate, and a discharge conveyor belt is provided below the discharge port of the collection trough. A negative pressure fan is provided on the outside of the gap between the discharge port of the collection trough and the discharge conveyor belt.

6. The vibrating screening device for mushroom processing raw materials according to claim 5, characterized in that: A transmission wheel is provided on the outer end of the shaft where the screening drum, vibrating drum, vibrating cam and negative pressure fan are located. A drive wheel is provided on the inner end of the frame. The drive wheel is driven to rotate by a drive motor and is connected to the transmission wheel.

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