A multi-stage transmission konjac powder particle size screening device

Abstract

The utility model provides a kind of multistage transmission formula konjak powder particle size screening device, belong to screening device technical field, this multistage transmission formula konjak powder particle size screening device includes shell, multilayer screening net, adjustable support, screw conveyor and collection bin;The shell top is equipped with feed inlet, bottom is equipped with multiple discharge ports;The multilayer screening net is sequentially arranged in shell inside from top to bottom, and each layer screening net is inclined to set;The adjustable support is used to connect screening net and shell inner wall, and adjustable support bottom is equipped with screw hole, and shell inner wall corresponding position is equipped with fixed bolt hole;The screw conveyor is set below screening net, and the conveying direction of screw conveyor is consistent with the inclination direction of screening net;The collection bin is set in shell bottom, and each collection bin is respectively communicated with one discharge port, and the discharge end of screw conveyor is connected with discharge port corresponding, and the utility model solves the problem of low screening precision and low efficiency of traditional konjak powder particle size screening device.

Description

Technical Field

[0001] This utility model belongs to the field of screening device technology, specifically, it relates to a multi-stage transmission type konjac flour particle size screening device. Background Technology

[0002] In industries such as food processing and pharmaceuticals, konjac flour is an important raw material, and the uniformity and accuracy of its particle size have a crucial impact on the quality of subsequent products. Konjac flour particle size separation devices are key equipment for achieving particle size classification of konjac flour. Their main function is to separate konjac flour of different particle sizes to meet various production needs. For example, in the food industry, when making konjac gel foods, there are specific requirements for the particle size of the konjac flour; konjac flour of suitable particle size can give the gel food a better taste and texture. In the pharmaceutical field, konjac flour is used as a drug carrier or excipient, and the precise control of its particle size directly affects the stability and efficacy of the drug.

[0003] Traditional konjac flour particle size screening devices mostly employ a single-layer screening mesh structure. This type of device uses a vibrating motor to drive the screening mesh, causing the konjac flour to move and complete the screening process. However, this traditional device has several drawbacks. First, the screening accuracy of a single-layer mesh is limited, making it difficult to finely grade konjac flour and meet the high-precision particle size requirements of modern production. In actual production, some konjac flour that does not meet the particle size requirements often mixes into qualified products, affecting product quality. Second, the screening efficiency of traditional devices is low. Because the movement of konjac flour relies solely on the vibration of the motor, the material moves slowly on the screening mesh and is prone to accumulation, resulting in long screening times and failing to meet the needs of large-scale production. Third, the tilt angle of the screening mesh in traditional devices is usually fixed and cannot be adjusted according to different konjac flour raw materials or production requirements. Konjac flour from different origins and with different processing techniques has different particle size distributions and characteristics, and a fixed tilt angle cannot achieve the best screening effect. Fourth, traditional devices have shortcomings in material conveying. After screening, konjac flour is usually collected manually or transported by a simple conveyor belt, which easily leads to spillage and accumulation of materials. This not only wastes materials but also affects the cleanliness of the working environment and the continuity of production. Fifth, the screening screens in traditional equipment are mostly of a single, integral structure. Once the screen is damaged or needs to be replaced with a screen of a different particle size, the entire screen needs to be disassembled and replaced, which is cumbersome, has high maintenance costs, and leads to a long downtime, affecting the production schedule. In addition, traditional equipment lacks effective guidance for the material flow path in its design, resulting in uneven distribution of materials during the screening process, further reducing screening efficiency and accuracy. Utility Model Content

[0004] In view of this, the present invention provides a multi-stage transmission type konjac flour particle size screening device, which solves the problems of low screening accuracy and low efficiency of traditional konjac flour particle size screening devices.

[0005] This utility model is implemented as follows:

[0006] This utility model provides a multi-stage transmission type konjac flour particle size screening device, comprising a shell, multiple layers of screening mesh, an adjustable support, a screw conveyor, and a collection bin; the top of the shell has a feed inlet and multiple discharge outlets at the bottom; the multiple layers of screening mesh are arranged sequentially inside the shell from top to bottom, with each layer of screening mesh inclined; the adjustable support is used to connect the screening mesh to the inner wall of the shell, and the bottom of the adjustable support has a threaded hole, with corresponding fixing bolt holes on the inner wall of the shell, and the adjustable support is fixed to the inner wall of the shell by fixing bolts passing through the threaded hole and the fixing bolt hole; the screw conveyor is located below the screening mesh, and the conveying direction of the screw conveyor is consistent with the inclined direction of the screening mesh; the collection bin is located at the bottom of the shell, and each collection bin is connected to a discharge outlet, with the discharge end of the screw conveyor correspondingly connected to the discharge outlet.

[0007] The technical advantages of the multi-stage transmission konjac flour particle size screening device provided by this utility model are as follows: the outer shell forms a closed screening space to prevent konjac flour from splashing and ensure a clean working environment; the multi-layer screening mesh achieves multi-stage screening, which can more accurately separate konjac flour of different particle sizes and improve screening accuracy; the screen mesh is tilted, using gravity to make the konjac flour move and screen automatically, saving power; the adjustable bracket, with threaded holes and fixing bolts, allows for flexible adjustment of the screen mesh tilt angle according to different screening needs, enhancing the versatility of the device; the screw conveyor promptly transports the screened konjac flour to the corresponding collection bin, avoiding material accumulation, ensuring screening continuity, and improving efficiency.

[0008] Based on the above technical solution, the multi-stage transmission type konjac flour particle size screening device of this utility model can be further improved as follows:

[0009] The adjustable support includes a first support rod and a second support rod that are hinged to each other. The first support rod is fixedly connected to the screening screen. The second support rod is provided with multiple adjustment holes. The first support rod is provided with an adjustment bolt. The adjustment bolt passes through the adjustment hole and is fixed by a nut to adjust the tilt angle of the screening screen.

[0010] The beneficial effects of adopting the above-mentioned improved scheme are as follows: The adjustable bracket includes a first support rod and a second support rod that are hinged to each other, forming a rod-like structure resembling a "Z" bend. The first support rod is fixedly connected to the screening mesh, usually by welding or bolting. The second support rod has multiple adjustment holes, and the first support rod has adjustment bolts that pass through the adjustment holes and are secured by nuts. The bottom of the adjustable bracket has threaded holes, and the inner wall of the outer shell has corresponding fixing bolt holes. The adjustable bracket is fixed to the inner wall of the outer shell by the fixing bolts passing through the threaded holes and fixing bolt holes.

[0011] Furthermore, the screening mesh is rectangular, with upward-bent barriers around its four edges, the height of which is not less than the maximum accumulation height of the material when the screening mesh is tilted.

[0012] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the rectangular screening mesh has a regular structure, which is convenient for installation and layout; the surrounding barriers can effectively prevent konjac powder from falling off the edge of the screening mesh during the screening process, avoiding material waste and environmental mess, while ensuring that the konjac powder is fully screened within the designated area of ​​the screening mesh, thereby improving the screening effect and material utilization rate.

[0013] Furthermore, the screw conveyor includes a screw shaft and screw blades. The two ends of the screw shaft are fixed to the inner wall of the outer casing by bearing seats, and the bearing seats are connected to the inner wall of the outer casing by bolts.

[0014] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the combination of the screw shaft and the screw blades achieves stable and efficient material conveying; the bearing seat is fixed to the inner wall of the outer shell by bolts, which is convenient for installation and disassembly, facilitates the maintenance of the screw conveyor, ensures its long-term stable operation, ensures the continuous operation of the screening device, and reduces downtime caused by equipment failure.

[0015] Furthermore, one end of the spiral shaft extends out of the outer casing and connects to the output shaft of the drive motor, and the drive motor is fixed to the outside of the outer casing by a motor bracket.

[0016] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the drive motor is external and fixed by the motor bracket, which facilitates the maintenance and replacement of the motor, and at the same time reduces the impact of the heat and vibration generated by the motor operation on the internal structure of the screening device; the motor directly drives the screw shaft, which has high transmission efficiency and stable power transmission, ensuring the reliable operation of the screw conveyor, and thus ensuring the smooth screening process.

[0017] Furthermore, a guide plate is provided between two adjacent screening screens. One end of the guide plate is fixedly connected to the discharge end of the upper screening screen, and the other end extends downwards to the feed end of the lower screening screen.

[0018] The upper screening screen is tilted, with the higher end being the feed end, used to receive konjac powder fed in from the top of the device casing; and the lower end being the discharge end. After the konjac powder moves down the tilted screening screen due to gravity and is screened, the konjac powder that meets the particle size requirements of the upper screening screen and passes through the screen will fall from this discharge end.

[0019] Furthermore, the guide plate is an arc-shaped plate, with its concave surface facing the inclined direction of the screening screen.

[0020] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: compared with the straight plate, the arc-shaped guide plate can guide the flow of konjac powder more smoothly, reducing the resistance and clogging risk of the material during the guiding process; the arc-shaped structure makes the material flow more smoothly, which helps the material to be evenly dispersed to the lower screening screen, further improving the screening effect and screening efficiency.

[0021] Furthermore, the top of the collection bin has an opening, and a connecting flange that matches the discharge port is provided at the opening. The collection bin is fixedly connected to the discharge port by bolts.

[0022] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the top opening design makes it convenient for the collection bin to hold the screened konjac powder; the connecting flange and bolt connection make the collection bin and the discharge port tightly connected to prevent material leakage, while also making it easy to disassemble the collection bin for cleaning and replacement, ensuring the normal operation and hygiene of the screening device.

[0023] Furthermore, the outer casing has an observation window on its side wall, which is positioned corresponding to the screening screen and is used to observe the working status of the screening screen. The bottom of the outer casing has support feet with anti-slip pads on the bottom.

[0024] Furthermore, the distance between the spiral blades of the spiral conveyor and the screening screen is adjustable, and the distance adjustment is achieved by setting a shim between the bearing seat and the inner wall of the outer casing.

[0025] The screw propeller moves the konjac powder along the screen surface. Compared to relying solely on gravity, this method ensures more uniform and stable movement of the powder, guaranteeing full contact between the powder and the screen and improving screening efficiency. The tiny gaps between the screw blade edges and the screen surface ensure effective powder movement while preventing collisions and damage, extending the device's lifespan. The screen is made of metal wire mesh. High-strength, wear-resistant, and durable wire mesh can withstand the friction and impact during konjac powder screening. The regular square or round mesh shape facilitates particle size control, ensuring screening accuracy, and different mesh shapes can meet diverse screening needs.

[0026] Compared with existing technologies, the beneficial effects of the multi-stage transmission type konjac flour particle size screening device provided by this utility model are:

[0027] High-precision screening: The multi-layer screening system enables multi-stage screening, with each layer capable of being configured with different particle sizes. As the konjac flour passes through each layer, products of varying particle sizes are separated more precisely. Compared to a single-layer screening system, multi-stage screening allows for finer grading of the konjac flour, significantly improving screening accuracy, effectively reducing the occurrence of substandard products, and meeting the stringent requirements of the food and pharmaceutical industries for high-precision particle size distribution of konjac flour.

[0028] High-efficiency screening: The inclined screening screen utilizes gravity to automatically move the konjac powder along it, eliminating the need for additional power to propel the material and saving energy. Simultaneously, a spiral conveyor below the screen promptly transports the konjac powder to the corresponding collection bin, preventing material accumulation within the screening device, ensuring the continuity of the screening process, and significantly improving screening efficiency. Compared to traditional devices, this invention can process more konjac powder in the same amount of time, meeting the needs of large-scale production. For example, in large-scale production lines of food processing plants, using this device can significantly increase the screening output of konjac powder and improve production efficiency.

[0029] High adaptability: The adjustable bracket, combined with threaded holes and fixing bolts, allows the tilt angle of the screening screen to be flexibly adjusted according to actual screening needs. Whether it's konjac flour raw materials from different origins or with different characteristics, or different production process requirements, the optimal screening effect can be achieved by adjusting the tilt angle of the screening screen, enhancing the versatility and adaptability of the device. Furthermore, the screening screen uses a small-piece mesh splicing method, allowing for flexible combination of small mesh pieces of different particle sizes to meet specific screening needs, further improving the device's adaptability to diverse screening tasks.

[0030] Stable and Reliable Operation: The outer shell forms a closed screening space, preventing konjac powder from splashing and ensuring a clean working environment. It also reduces interference from external factors in the screening process. Observation windows on the side walls of the outer shell allow operators to monitor the screening screen's operation in real time, detecting issues such as material blockage or screen damage. This facilitates timely fault detection and handling, preventing deterioration in screening quality or equipment damage due to undetected faults, thus improving the reliability and stability of equipment operation. Support feet and anti-slip pads at the bottom of the outer shell maintain a certain distance between the device and the ground, facilitating the cleaning of debris and increasing friction between the device and the ground. This prevents displacement due to vibration during screening, ensuring safe and stable operation. Attached Figure Description

[0031] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 An example diagram of a multi-stage transmission type konjac flour particle size screening device;

[0033] Figure 2 A bottom view of a multi-stage transmission type konjac flour particle size screening device;

[0034] Figure 3 A perspective view of a multi-stage transmission type konjac flour particle size screening device;

[0035] Figure 4 A perspective bottom view of a multi-stage transmission type konjac flour particle size screening device;

[0036] The attached diagram lists the components represented by each number as follows:

[0037] 10. Outer shell; 11. Inlet; 12. Outlet; 20. Screening mesh; 21. Guide plate; 30. Adjustable bracket; 31. First support rod; 32. Second support rod; 40. Screw conveyor; 50. Collection bin. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0039] like Figures 1-4The diagram shows a first embodiment of a multi-stage transmission type konjac flour particle size screening device provided by this utility model. In this embodiment, it includes a shell 10, a multi-layer screening mesh 20, an adjustable support 30, a screw conveyor 40, and a collection bin 50. The shell 10 has a feed inlet 11 at the top and multiple discharge outlets 12 at the bottom. The multi-layer screening mesh 20 is arranged sequentially from top to bottom inside the shell 10, and each layer of screening mesh 20 is inclined. The adjustable support 30 is used to connect the screening mesh 20 to the inner wall of the shell 10. The adjustable support 30 has a threaded hole at the bottom, and a fixing bolt hole is provided at the corresponding position on the inner wall of the shell 10. The adjustable support 30 is fixed to the inner wall of the shell 10 by the fixing bolt passing through the threaded hole and the fixing bolt hole. The screw conveyor 40 is arranged below the screening mesh 20, and the conveying direction of the screw conveyor 40 is consistent with the inclined direction of the screening mesh 20. The collection bin 50 is arranged at the bottom of the shell 10, and each collection bin 50 is connected to a discharge outlet 12. The discharge end of the screw conveyor 40 is connected to the discharge outlet 12.

[0040] First, place the device on a stable surface. Based on the particle size of the konjac flour to be screened, adjust the tilt angle of each layer of screen by turning the fixing bolts and adjusting the adjustable bracket. Then, pour the konjac flour into the feed inlet. The konjac flour moves along the tilted screen under the action of gravity. Small particles pass through the screen and fall into the screw conveyor below. The screw conveyor sends them to the corresponding collection bin, completing the screening.

[0041] In the above technical solution, the adjustable bracket 30 includes a first support rod 31 and a second support rod 32 that are hinged to each other. The first support rod 31 is fixedly connected to the screening screen 20. The second support rod 32 is provided with multiple adjustment holes. The first support rod 31 is provided with an adjustment bolt. The adjustment bolt passes through the adjustment hole and is fixed by a nut to adjust the tilt angle of the screening screen 20.

[0042] Furthermore, in the above technical solution, the screening mesh 20 is rectangular, with upward-bent barriers around its four edges, and the height of the barriers is not less than the maximum accumulation height of the material when the screening mesh 20 is tilted.

[0043] Furthermore, in the above technical solution, the screw conveyor 40 includes a screw shaft and screw blades. The two ends of the screw shaft are fixed to the inner wall of the outer casing 10 by bearing seats, and the bearing seats are connected to the inner wall of the outer casing 10 by bolts.

[0044] Furthermore, in the above technical solution, one end of the spiral shaft extends out of the outer casing 10 and is connected to the output shaft of the drive motor, and the drive motor is fixed to the outside of the outer casing 10 by a motor bracket.

[0045] The drive motor is fixed to the outside of the housing via a motor bracket, which is an "L"-shaped plate structure. The bracket is securely connected to the housing with bolts to ensure a firm motor installation. The output shaft of the drive motor is connected to the portion of the screw conveyor's screw shaft that extends out of the housing. This connection can be achieved using a coupling, ensuring stable power transmission to the screw shaft. Additionally, if the device includes a feeding mechanism, the drive motor is also connected to the feeding mechanism's shaft via gear transmission. The gears mesh to achieve power transmission.

[0046] When the device is ready to perform konjac flour screening, the power supply to the drive motor is turned on, and the motor starts running.

[0047] The power output from the motor is first transmitted to the screw shaft of the screw conveyor, causing it to rotate. The screw blades on the screw shaft then rotate, pushing the konjac flour that has been screened below the screen to the corresponding collection bin according to the conveying direction of the screw conveyor. This ensures that the screened material is conveyed in a timely manner, preventing accumulation and maintaining the continuity of the screening process. Simultaneously, if a feeding mechanism is present, the motor drives the rotating shaft of the feeding mechanism through gear transmission, causing the feeding rod to oscillate periodically. During the oscillation of the feeding rod, the konjac flour accumulated on the screen is dispersed, allowing the konjac flour to fully contact the screen, accelerating the screening speed and preventing material accumulation from affecting the screening effect.

[0048] Furthermore, in the above technical solution, a guide plate 21 is provided between two adjacent screening screens 20. One end of the guide plate 21 is fixedly connected to the discharge end of the upper screening screen 20, and the other end extends downward at an angle to above the feed end of the lower screening screen 20.

[0049] Furthermore, in the above technical solution, the guide plate 21 is an arc-shaped plate, and its arc-shaped concave surface faces the inclined direction of the screening screen 20.

[0050] Furthermore, in the above technical solution, the top of the collection chamber 50 is open, and a connecting flange matching the discharge port 12 is provided at the opening. The collection chamber 50 and the discharge port 12 are fixedly connected by bolts.

[0051] Furthermore, in the above technical solution, an observation window is provided on the side wall of the outer casing 10, the position of which corresponds to the screening screen 20, for observing the working status of the screening screen 20. The bottom of the outer casing 10 is provided with a support foot, and the bottom of the support foot is provided with an anti-slip pad.

[0052] Furthermore, in the above technical solution, the distance between the spiral blades of the spiral conveyor 40 and the screening screen 20 is adjustable, and the distance adjustment is achieved by setting a shim between the bearing seat and the inner wall of the outer casing 10.

[0053] To achieve adjustable distance between the screw conveyor blades and the screening screen, the design can focus on the screw conveyor's installation, support structure, and adjustment method. The specific implementation method is as follows:

[0054] Adjustable bracket type: The screw conveyor is installed below the screen via an adjustable bracket. The adjustable bracket consists of two parts: the lower part is fixed to the device base, and the upper part is connected to the outer shell of the screw conveyor. Multiple height adjustment holes are provided between the two parts. Bolts are passed through these holes to fix the screw conveyor, thereby changing its height and adjusting the distance between the screw blades and the screen. Alternatively, a screw and nut structure can be used. The lower bracket has a screw that passes through the upper bracket and engages with a nut. Rotating the nut moves the screw conveyor up and down along the screw, achieving distance adjustment.

[0055] Adjustable suspension type: A suspension track is installed at the top of the device frame. The screw conveyor is connected to the suspension track via a suspension frame with pulleys. An adjusting bolt is installed on the suspension frame, with the lower end of the bolt resting against the screw conveyor housing. Rotating the adjusting bolt moves the screw conveyor up and down, adjusting its distance from the screen. Alternatively, a spring can be installed between the suspension frame and the screw conveyor. One end of the spring is fixed to the suspension frame, and the other end is connected to the screw conveyor housing. Adjusting the spring's compression changes the position of the screw conveyor, thereby adjusting the distance between it and the screen.

[0056] Adjustable slide rail and slider type: Vertical slide rails are installed on the side walls of the device on both sides of the screen, and sliders that cooperate with the slide rails are installed on both sides of the screw conveyor. The sliders have multiple positioning holes distributed vertically, and corresponding positioning pin holes are provided on the side walls of the device. By inserting positioning pins into different positioning holes and positioning pin holes, the screw conveyor can be fixed at different heights, thereby adjusting the distance between it and the screen. A hydraulic or pneumatic telescopic rod can also be installed between the slider and the slide rail. By controlling the extension and retraction length of the telescopic rod, the distance between the screw conveyor and the screen can be precisely adjusted.

[0057] Specifically, the principle of this utility model is as follows:

[0058] Multi-stage screening principle: The device employs multiple layers of screening mesh arranged sequentially from top to bottom inside the outer shell. Each layer of mesh is tilted and has a different particle size. When konjac powder enters the device through the feed inlet at the top of the shell, it moves downwards along the top layer of mesh under gravity. Due to the combined effect of gravity and the mesh size, smaller particles of konjac powder pass through and fall to the bottom, while larger particles continue to move along the mesh. The konjac powder falling to the bottom then enters the next layer of mesh for further screening, and so on. Through multi-stage screening, konjac powder of different particle sizes is finally separated. Compared to single-layer screening, this multi-stage screening method can perform finer particle size classification of konjac powder, greatly improving screening accuracy.

[0059] Gravity and Screw Conveying Principle: The screen is tilted, utilizing gravity as the power source for the konjac powder to move on it. Under the influence of gravity, the konjac powder naturally slides down the tilted screen, eliminating the need for additional power equipment to move the material and saving energy. Simultaneously, a screw conveyor is installed below the screen, with its conveying direction aligned with the screen's tilt. When the konjac powder falls through the screen into the screw conveyor, the screw shaft rotates under the drive motor, and the screw blades propel the konjac powder along the conveying direction, transporting it to the corresponding collection bin. The screw conveyor effectively removes the screened konjac powder, preventing material accumulation within the screening device, ensuring the continuity of the screening process, and improving screening efficiency. Furthermore, by adjusting the distance between the screw blades and the screen using shims between the bearing housing and the inner wall of the outer casing (as shown in some claims), this distance can be adjusted according to the characteristics of konjac powder with different particle sizes, ensuring that the screw conveyor effectively transports the material without interfering with the screen or causing material accumulation.

[0060] Angle Adjustment Principle: The adjustable bracket connects the screening screen to the inner wall of the outer casing. Its unique structural design allows for flexible adjustment of the screening screen's tilt angle. The adjustable bracket includes a first and second support rod hinged together. The first support rod is fixedly connected to the screening screen, and the second support rod has multiple adjustment holes. The first support rod has an adjustment bolt, which passes through the adjustment hole and is secured with a nut. When it is necessary to adjust the tilt angle of the screening screen, loosen the nut of the adjustment bolt, rotate the first support rod to change the tilt of the screening screen, align the adjustment bolt with the appropriate adjustment hole, and then tighten the nut to secure it. This method of adjustment is simple and convenient to operate, and can precisely adjust the tilt angle of the screening screen according to the characteristics of different konjac flour raw materials and production process requirements to achieve the best screening effect, thus improving the versatility and adaptability of the device.

Claims

1. A multi-stage transmission type konjac flour particle size screening device, characterized in that, The device includes an outer shell, multiple layers of screening mesh, an adjustable support, a screw conveyor, and a collection bin. The outer shell has a feed inlet at the top and multiple discharge outlets at the bottom. The multiple layers of screening mesh are arranged sequentially inside the outer shell from top to bottom, with each layer inclined. The adjustable support connects the screening mesh to the inner wall of the outer shell; the bottom of the adjustable support has threaded holes, and corresponding bolt holes are provided on the inner wall of the outer shell. The adjustable support is fixed to the inner wall of the outer shell by bolts passing through the threaded holes and bolt holes. The screw conveyor is located below the screening mesh, and its conveying direction is consistent with the inclined direction of the screening mesh. The collection bins are located at the bottom of the outer shell, with each collection bin connected to a discharge outlet. The discharge end of the screw conveyor is connected to a corresponding discharge outlet.

2. The multi-stage transmission type konjac flour particle size screening device according to claim 1, characterized in that, The adjustable support includes a first support rod and a second support rod that are hinged to each other. The first support rod is fixedly connected to the screening screen. The second support rod is provided with multiple adjustment holes. The first support rod is provided with an adjustment bolt. The adjustment bolt passes through the adjustment hole and is fixed by a nut to adjust the tilt angle of the screening screen.

3. The multi-stage transmission type konjac flour particle size screening device according to claim 2, characterized in that, The screening mesh is rectangular, with upward-curving barriers around its four edges. The height of the barriers is not less than the maximum accumulation height of the material when the screening mesh is tilted.

4. The multi-stage transmission type konjac flour particle size screening device according to claim 3, characterized in that, The screw conveyor includes a screw shaft and screw blades. The two ends of the screw shaft are fixed to the inner wall of the outer casing by bearing seats, and the bearing seats are connected to the inner wall of the outer casing by bolts.

5. The multi-stage transmission type konjac flour particle size screening device according to claim 4, characterized in that, One end of the spiral shaft extends out of the outer casing and is connected to the output shaft of the drive motor. The drive motor is fixed to the outside of the outer casing by a motor bracket.

6. The multi-stage transmission type konjac flour particle size screening device according to claim 5, characterized in that, A guide plate is provided between two adjacent screening screens. One end of the guide plate is fixedly connected to the discharge end of the upper screening screen, and the other end extends downwards to the feed end of the lower screening screen.

7. The multi-stage transmission type konjac flour particle size screening device according to claim 6, characterized in that, The guide plate is an arc-shaped plate, with its concave surface facing the inclined direction of the screening screen.

8. The multi-stage transmission type konjac flour particle size screening device according to claim 7, characterized in that, The top of the collection bin has an opening, and a connecting flange that matches the discharge port is provided at the opening. The collection bin is fixedly connected to the discharge port by bolts.

9. The multi-stage transmission type konjac flour particle size screening device according to claim 8, characterized in that, The outer casing has an observation window on its side wall, which is positioned to correspond to the screen and is used to observe the working status of the screen. The bottom of the outer casing has support feet with anti-slip pads on the bottom.

10. A multi-stage transmission type konjac flour particle size screening device according to claim 9, characterized in that, The distance between the spiral blades of the spiral conveyor and the screening screen is adjustable, and the distance adjustment is achieved by setting a shim between the bearing seat and the inner wall of the outer casing.

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