Agricultural machinery threshing machine

Abstract

The embodiment of the utility model provides an agricultural machinery threshing machine which comprises a roller used for threshing rice and located on the upper portion of a rack; the feeding device is arranged at the front end of the roller and used for feeding rice to be threshed into the roller; the vibrating screen is arranged below the roller and used for screening and separating the threshed rice and impurities, and a movable baffle with an adjustable inclination angle is arranged on the front portion of the vibrating screen; the winnowing device is arranged behind the vibrating screen, generates airflow through a fan and further separates light impurities and unthreshed rice; and the collecting box is arranged below the vibrating screen and the winnowing device and is used for collecting the separated clean rice. According to the scheme of the embodiment of the invention, the problem that the vibrating screen is easily blocked due to high water content of rice in the operation process due to unreasonable design of the vibrating screen of the threshing machine can be solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of agricultural production machinery, in particular to a threshing machine for agricultural machinery. BACKGROUND

[0002] The threshing machine for agricultural machinery is a mechanical device for separating rice from rice panicles, which is widely used in agricultural production to improve threshing efficiency. However, there is a common problem with this threshing machine, that is, due to the unreasonable design of the vibrating screen, the vibrating screen is easily blocked during operation due to high moisture content of the rice, thereby affecting the working efficiency and service life of the machine. SUMMARY

[0003] Therefore, the present application provides a threshing machine for agricultural machinery to at least partially solve the problems in the prior art.

[0004] The threshing machine for agricultural machinery comprises:

[0005] A cylinder for threshing rice is arranged at the upper part of the frame.

[0006] A feeding device is arranged at the front end of the cylinder for feeding the rice to be threshed into the cylinder.

[0007] A vibrating screen is arranged below the cylinder for screening and separating the threshed rice and impurities, and the front part of the vibrating screen is provided with an adjustable movable baffle.

[0008] An air separation device is arranged behind the vibrating screen to further separate light impurities and unthreshed rice by air flow generated by a fan.

[0009] A collection box is arranged below the vibrating screen and the air separation device for collecting the separated clean rice.

[0010] The feeding device, the cylinder, the vibrating screen, the air separation device and the collection box are sequentially connected to form a continuous rice processing path.

[0011] The movable baffle of the vibrating screen is provided with a plurality of guide vanes at the top, and the length of the guide vanes gradually increases so that the rice can be dispersed along the direction of the guide vanes when entering the vibrating screen.

[0012] Preferably, the movable baffle is connected to the output end of the cylinder through a hinge, so that the movable baffle can freely adjust the inclination angle.

[0013] Preferably, the feeding device comprises a feeding roller and a plurality of stirring teeth, and the feeding roller is provided with a plurality of stirring teeth.

[0014] Preferably, the stirring teeth are spirally distributed on the feeding roller.

[0015] Preferably, the feeding device is further provided with an adjusting mechanism for adjusting the rotating speed of the feeding roller.

[0016] Preferably, the winnowing device comprises a speed-adjustable fan.

[0017] Preferably, the vibrating screen is further provided with a plurality of layered screens with different mesh sizes.

[0018] Preferably, the air inlet of the winnowing device is provided with a filter screen.

[0019] The agricultural machine threshing machine provided by the embodiment of the present disclosure comprises a cylinder for threshing rice, which is located at the upper part of a frame; a feeding device arranged at the front end of the cylinder for feeding the rice to be threshed into the cylinder; a vibrating screen arranged below the cylinder for screening and separating the threshed rice and impurities, the front part of the vibrating screen being provided with an adjustable movable baffle with an adjustable inclination angle; a winnowing device arranged behind the vibrating screen for further separating light impurities and unthreshed rice by air flow generated by a fan; and a collecting box arranged below the vibrating screen and the winnowing device for collecting the separated clean rice; wherein the feeding device, the cylinder, the vibrating screen, the winnowing device and the collecting box are sequentially connected to form a continuous rice processing path; and the top of the movable baffle of the vibrating screen is provided with a plurality of guide vanes with gradually increasing lengths, so that the rice can be dispersed along the direction of the guide vanes when entering the vibrating screen. Through the scheme of the embodiment of the present disclosure, the problem of clogging of the vibrating screen due to high moisture content of the rice during operation caused by unreasonable design of the vibrating screen of the threshing machine can be solved. BRIEF DESCRIPTION OF DRAWINGS

[0020] In the drawings, like reference numerals designate like elements throughout the several views, unless otherwise specified. The drawings are not necessarily to scale, the emphasis instead being placed upon illustrating the principles of the application. It should be understood that the drawings are merely depictions of some embodiments of the application and should not be construed as limiting the scope of the application.

[0021] Figure 1 It is a structural schematic view of the present application;

[0022] Figure 2 It is a left view of the structure of the present application;

[0023] Figure 3 It is a front view of the structure of the present application;

[0024] Figure 4 It is a top view of the structure of the present application

[0025] Fig. 1: 1. Cylinder; 2. Feeding device; 3. Vibrating screen; 4. Mobile baffle; 5. Air separator; 6. Collection bin; 7. Hinge; 8. Deflector; 9. Filter screen; 10. Feeding roller; 11. Raking tooth; 12. Adjustment mechanism; 13. Fan; 14. Layering screen DETAILED DESCRIPTION

[0026] The embodiments of the present disclosure will be described in detail below with reference to the drawings.

[0027] The following detailed description of the embodiments of the present disclosure is provided for the purpose of understanding the present disclosure. It is obvious, however, that the embodiments described are only a part of the embodiments of the present disclosure, and are not all the embodiments of the present disclosure. The present disclosure can be implemented or applied in other different embodiments, and the details in the specification can be modified or changed based on different views and applications without departing from the spirit of the present disclosure. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of the present disclosure.

[0028] It should be noted that the various aspects of the embodiments described below are within the scope of the appended claims. It should be apparent that the aspects described herein can be embodied in a wide variety of forms and that any specific structure and / or function described herein is merely illustrative. Based on the teachings provided herein one skilled in the art should be able to contemplate these and similar aspects of the present disclosure. For example, the various aspects described herein can be implemented across many differing platforms. Based on the teachings provided herein, one skilled in the art should be able to contemplate these and similar aspects of the present disclosure. For example, the various aspects described herein can be implemented across many differing platforms. Those skilled in the art will further understand that the aspects of the present disclosure can be implemented by one or more computer programs, i.e., one or more programs of instructions, operable on one or more computing devices.

[0029] It should also be noted that the drawings provided in the following embodiments are only schematically illustrating the basic concept of the present disclosure, and only the components related to the present disclosure are shown in the drawings, not drawn according to the number, shape and size of the components in actual implementation, and the shape, number and proportion of each component in actual implementation can be arbitrarily changed, and the layout pattern of the components can be more complex.

[0030] In addition, in the following description, specific details are provided in order to facilitate a thorough understanding of the examples. However, one skilled in the art will understand that the aspects described can be practiced without these specific details.

[0031] As Figure 1As shown, the agricultural threshing machine of the present application includes several main components, namely a cylinder 1, a feeding device 2, a vibrating screen 3 (see Figure 2 for details), an air separation device 5 (see Figure 3 for details), and a collection box 6. These components are connected in sequence to form a continuous rice processing path. The design of the threshing machine aims to improve threshing efficiency, reduce impurity mixing, and ensure the stability and reliability of the equipment when processing high-moisture rice.

[0032] The cylinder 1 is located at the upper part of the frame and is mainly used for threshing rice. The cylinder 1 is usually composed of a rotating shaft and a cylinder body surrounding the rotating shaft, with protruding racks or protrusions on the surface of the cylinder body to enhance the threshing effect. The cylinder 1 is driven by an electric motor, and the rotation speed can be adjusted according to actual needs. In order to make the rice enter the cylinder 1 uniformly, the present application also includes a feeding device 2, which is arranged at the front end of the cylinder 1. The feeding device 2 is generally composed of a series of conveying rollers and adjusting baffles, which can control the feeding amount of rice by adjusting the speed of the conveying rollers and the angle of the baffles, ensuring that the rice enters the cylinder 1 smoothly.

[0033] The vibrating screen 3 is arranged below the cylinder 1, which is used for screening and separating the threshed rice and impurities. The vibrating screen 3 is usually a screen with multiple aperture specifications, which is driven to vibrate by an electric vibrator, so that the rice and impurities are separated. In order to solve the problem that high-moisture rice easily causes the vibrating screen 3 to be blocked, the front part of the vibrating screen 3 is provided with a movable baffle 4, and the inclination angle of the movable baffle 4 can be adjusted according to the moisture content of the rice. For example, when processing high-moisture rice, the inclination angle of the movable baffle 4 can be increased to reduce the time of the rice staying on the screen and prevent the rice from adhering and blocking the screen holes.

[0034] An air separation device 5 is arranged behind the vibrating screen 3, which is mainly composed of a powerful fan 13 and a series of air deflectors. The airflow generated by the fan 13 is guided to the outlet area of the vibrating screen 3 through the air deflectors, helping to separate light impurities and unthreshed rice. This not only reduces the probability of impurities mixing into the final product, but also further ensures the smoothness of the vibrating screen 3. The fan 13 of the air separation device 5 is usually driven by a separate motor, and the wind speed can also be adjusted according to actual conditions to adapt to different operation requirements.

[0035] Finally, the collection box 6 is arranged below the vibrating screen 3 and the air separation device 5, which is used to collect clean rice after screening and separation. The collection box 6 is generally composed of one or more storage boxes, which are smooth inside and not easy to store rice. At the same time, the collection box 6 is also provided with a door that is easy to open, so that the user can regularly empty the storage box, ensuring the smooth storage and transportation of rice.

[0036] Through the ingenious design and combination of the above-mentioned components, the threshing machine of the present application successfully solves the problem of easy clogging of the vibrating screen 3 in traditional designs. In particular, the design of the movable baffle 4 of the vibrating screen 3 allows users to flexibly adjust the inclination angle of the baffle according to the actual moisture content of the rice, ensuring the smoothness of the screen. This design not only improves work efficiency, but also reduces the frequency of downtime maintenance, significantly improving the reliability and service life of the threshing machine.

[0037] In one embodiment, as shown in Figure 3 The agricultural machinery threshing machine of the present application is characterized in that the movable baffle 4 is connected to the output end of the drum 1 through a hinge 7. This connection allows the movable baffle 4 to freely adjust the inclination angle under the drive of the drum 1. Specifically, the movable baffle 4 is connected to the drum 1 through a hinge 7, allowing it to adjust its inclination angle according to different needs. This design ensures that rice of different moisture contents can be evenly distributed on the vibrating screen 3, further reducing the clogging of rice on the vibrating screen 3.

[0038] In one embodiment, the installation position of the movable baffle 4 is at the output end of the drum 1. Specifically, the movable baffle 4 is fixed to the end of the drum 1 through a hinge 7, allowing it to freely rotate in the vertical plane. The rotation of the drum 1 drives the movement of the movable baffle 4, allowing the inclination angle of the movable baffle 4 to be automatically or manually adjusted according to the moisture content of the rice. For example, when the moisture content of the rice is high, the inclination angle of the movable baffle 4 can be increased to increase the flow rate of the rice, making it more evenly distributed on the vibrating screen 3, effectively preventing the screen holes from being clogged by rice particles. This connection not only simplifies the operation, but also improves the work efficiency and reliability of the threshing machine.

[0039] Continuing to refer to Figure 3 In one embodiment, the vibrating screen 3 of the agricultural machinery threshing machine of the present application is provided with a plurality of guide vanes 8 at the top. These guide vanes 8 are installed on the top of the movable baffle 4 of the vibrating screen 3 and are evenly distributed along the width direction of the vibrating screen 3. The number of guide vanes 8 can be adjusted according to actual needs to ensure effective dispersion of the rice. Each guide vane 8 is arc-shaped or planar, and its length gradually increases from the inlet end to the outlet end of the vibrating screen 3. This design ensures that the rice can gradually disperse along the direction of the guide vanes 8 when entering the vibrating screen 3, thereby avoiding clogging of the vibrating screen 3 due to the concentration of rice.

[0040] Specifically, these guide vanes 8 are mounted on top of the movable baffle 4 of the vibrating screen 3 by welding or bolting. The spacing between the guide vanes 8 can be optimized according to the size and flow rate of the rice grains to ensure the best guiding effect. In one embodiment, the guide vanes 8 can be made of high-strength steel or wear-resistant alloy to improve their durability and impact resistance. The connection between the guide vanes 8 and the movable baffle 4 is reinforced to ensure that the guide vanes 8 can be firmly fixed in a high-vibration environment without loosening or falling off. For example, gaskets can be added at the connection or double nuts can be used to enhance the stability of the connection. In addition, the surface of the guide vanes 8 can be sandblasted or coated to reduce friction and wear, further extending their service life.

[0041] In one embodiment, such as Figure 4 As shown, the feeding device 2 of an agricultural machinery threshing machine according to this application includes a feeding roller 10 and feeding teeth 11. The feeding roller 10 is provided with multiple feeding teeth 11, which are evenly distributed on its outer surface. When paddy rice enters the threshing machine through the feeding device 2, the feeding teeth 11 on the feeding roller 10 can preliminarily shape the paddy rice, ensuring it enters the drum 1 evenly, thereby reducing the load on the vibrating screen 3 and lowering the possibility of clogging. Specifically, the feeding roller 10 is installed at the feed inlet of the threshing machine, and its rotation direction is consistent with the direction in which the paddy rice enters. The feeding teeth 11 are evenly arranged along the axial direction of the feeding roller 10, and the length and spacing of each feeding tooth 11 are optimized to ensure effective dispersion and shaping of the paddy rice before it enters the drum 1.

[0042] In one embodiment, the feeding teeth 11 are made of wear-resistant material, possessing high strength and toughness, capable of withstanding long-term wear and impact. Specifically, the feed roller 10 can be mounted within the threshing machine housing via bearings to ensure stable operation. For example, one end of the feed roller 10 can be connected to an electric motor or transmission mechanism, driven to rotate via a belt or chain drive system, thereby actuating the feeding teeth 11. This design effectively improves the uniformity of rice feeding, ensuring smooth operation of the entire threshing process.

[0043] In one embodiment, the feeding teeth 11 of the agricultural threshing machine of this application are spirally distributed on the feed roller 10. This design effectively conveys the rice along the axial direction of the feed roller 10, further preventing clogging when the rice enters the roller 1. The spiral shape of the feeding teeth 11 not only increases the contact area with the rice but also generates thrust through rotational motion, ensuring even distribution and rapid forward movement of the rice. The structure of the feed roller 10 ensures smooth conveying of the rice, reducing jamming and accumulation problems. Furthermore, the spiral feeding teeth 11 can accommodate rice of different lengths and diameters, improving the machine's versatility and applicability.

[0044] In one embodiment, the helical-shaped paddles 11 are firmly mounted on the outer surface of the feeding roller 10 by welding or other fixing means. Specifically, the paddles 11 are made of high-strength metal material to ensure durability under long-term high-load operation. The feeding roller 10 is composed of a rotating shaft and an outer sleeve, and the helical-shaped paddles 11 are fixed on the outer surface of the outer sleeve, which is mounted on the rotating shaft through bearings to ensure smooth and efficient rotation. For example, the helical-shaped paddles 11 can be precisely installed on the feeding roller 10 at a predetermined distance and angle to ensure that each paddle 11 can perform optimally during rotation.

[0045] In one embodiment, the feeding device 2 of the agricultural machine thresher of the present application is also provided with an adjusting mechanism 12 for adjusting the rotation speed of the feeding roller 10. This adjusting mechanism 12 can ensure that the speed of the rice entering the cylinder 1 matches the rotation speed of the cylinder 1, thereby effectively preventing the vibration screen 3 from being blocked due to excessive feeding speed. The feeding device 2 is mainly composed of several feeding rollers 10, which are responsible for uniformly feeding the rice into the cylinder 1. The adjusting mechanism 12 is installed on one side of the feeding device 2 and is connected to the feeding roller 10, and can achieve rotation speed adjustment through mechanical or electronic means.

[0046] In one embodiment, the adjusting mechanism 12 includes a motor drive and a speed change mechanism. The motor drive is connected to the feeding roller 10 through a transmission belt or chain, and the speed change mechanism can be manually or automatically adjusted according to the actual rotation speed of the cylinder 1. When the cylinder 1 rotates at a high speed, the adjusting mechanism 12 increases the rotation speed of the feeding roller 10, so that the speed of the rice entering the cylinder 1 increases; on the contrary, when the cylinder 1 rotates at a low speed, the adjusting mechanism 12 reduces the rotation speed of the feeding roller 10, so that the speed of the rice entering the cylinder 1 decreases. This dynamic adjustment ensures the coordination between the feeding speed and the rotation speed of the cylinder 1, effectively avoiding the blocking problem of the vibration screen 3. Specifically, the rotation speed of the cylinder 1 can be detected by a controller, and the motor output power of the feeding roller 10 can be adjusted according to a pre-set algorithm to achieve precise control.

[0047] Reference Figure 1 and Figure 3 In one embodiment, the winnowing device 5 of the agricultural machine thresher of the present application includes an adjustable speed fan 13. The fan 13 can control the air flow intensity by changing the rotation speed, so as to select the appropriate air flow intensity according to the different water content of the rice, further separate the light impurities and unthreshed rice, and reduce the blocking of the vibration screen 3. Specifically, the winnowing device 5 is located behind the main processing area of the thresher, immediately after the rice is initially threshed. The air inlet of the winnowing device 5 is connected to the rice conveying path after threshing, and the air outlet delivers the pure rice after winnowing treatment to the collection device through a duct.

[0048] In one embodiment, the installation position of the adjustable speed fan 13 is inside the winnowing device 5, and a guide plate is arranged in front of the fan 13 to guide the uniform distribution of air flow, so as to ensure the uniform distribution of air flow in the entire winnowing space. A guide plate for adjusting the direction of air flow is arranged behind the fan 13, and the direction of air flow can be adjusted according to different working requirements. In addition, the adjustable speed fan 13 is driven by a motor, and the controller of the motor is installed on the operation panel, so that the user can adjust the speed of the fan 13 according to the actual needs, so as to control the air flow intensity. For example, when the moisture content of the rice is high, the air flow intensity can be increased by increasing the speed of the fan 13, so as to better separate the light impurities; and when the moisture content of the rice is low, the speed of the fan 13 can be appropriately reduced to avoid unnecessary damage to the rice.

[0049] In one embodiment, the vibrating screen 3 of the agricultural mechanical thresher of the present application is also provided with a plurality of layered screens 14. The sizes of the apertures of these layered screens 14 are different, and they can perform multi-stage screening on impurities of different sizes. Specifically, the layered screens 14 are installed in the vibrating screen 3 in sequence, and the aperture size of each layer of screen is gradually reduced. The aperture size of the uppermost layer of screen is the largest, which is used to intercept large-particle impurities, and the aperture size of the lowermost layer of screen is the smallest, which is used to filter fine dust and other tiny impurities. Through this design, the screening effect can be effectively improved, and it is ensured that the unthreshed rice and impurities will not enter the collection box 6 in large quantities, thereby reducing the risk of clogging of the vibrating screen 3.

[0050] In one embodiment, the specific installation method of the layered screens 14 is that the layered screens 14 are fixed inside the vibrating screen 3 through support frames, and the support frames are uniformly distributed along the width direction of the vibrating screen 3, so as to ensure that each layered screen 14 can be stably installed and kept horizontal. The fixing method of the support frame can be welding or detachable connection, which is convenient for replacing the screen during maintenance and cleaning. In addition, appropriate spacing is left between adjacent layered screens 14, so as to ensure that the rice can be fully vibrated and screened when passing through each layer of screen, thereby achieving the best separation effect.

[0051] In one embodiment, the air inlet of the winnowing device 5 of the agricultural mechanical thresher of the present application is provided with a filter screen 9 (refer to Figure 2 Figure 2 ), which is designed to prevent larger impurities from entering the fan 13, thereby protecting the normal operation of the fan 13 and prolonging the service life of the winnowing device 5. The filter screen 9 is installed at the air inlet of the winnowing device 5 and is fixedly connected with the edge of the air inlet, so as to effectively filter the impurities in the air during air intake. The material and structure design of the filter screen 9 should be able to effectively intercept large-particle impurities such as grass clippings and rice husks, so as to prevent these impurities from passing through the winnowing device 5 and entering the fan 13 area. The specific structure of the filter screen 9 can include one or more layers of metal mesh or nylon mesh with different aperture sizes to meet the filtering needs in different working environments.

[0052] For example, in practical applications, a frame can be provided at the air inlet of the winnowing device 5, the frame is fixedly connected with the edges of the air inlet of the winnowing device 5 around, and the filter screen 9 is installed in the frame. The filter screen 9 can have a multi-layer structure, and the mesh size of each layer gradually decreases from the large aperture outside to the small aperture inside, so as to filter step by step to more effectively block larger impurities. The material of the filter screen 9 can be corrosion-resistant and high-strength metal or nylon, which is fixed in the frame by bolts or welding to ensure that it still maintains good filtering performance in a long-time high-load working environment.

[0053] In actual operation, when the device is used, first, the feeding device 2 uniformly feeds the rice to be threshed into the cylinder 1 located at the upper part of the frame. The cylinder 1 performs strong friction and beating on the rice through high-speed rotation, so that the rice is threshed from the rice straw. Then, the threshed rice and impurities fall into the vibrating screen 3 below the cylinder 1. The front part of the vibrating screen 3 is provided with a movable baffle 4 with an adjustable inclination angle, which can adjust the inclination angle according to the different water content of the rice to ensure that the rice smoothly passes through the vibrating screen 3 without blocking. Under the action of high-frequency vibration, the vibrating screen 3 separates relatively clean rice and part of heavy impurities, and the part that is not completely separated continues to move backward and enters the winnowing device 5. The fan 13 inside the winnowing device 5 blows away light impurities (such as rice husks, dust, etc.) by generating strong airflow, and the unthreshed rice and heavy impurities continue to stay in the winnowing device 5 for further separation. In this process, clean rice falls smoothly into the collection box 6, and finally completes the threshing, screening and collection process. Through the coordinated work of each part, the whole device forms an efficient and continuous rice processing path, greatly improving the efficiency and quality of rice threshing.

[0054] The exemplary systems and methods of the present application have been specifically shown and described herein in connection with the exemplary embodiments, but it will be understood that many other modifications, modifications, and variations of the described systems and methods can be made therein by those skilled in the art without departing from the spirit and scope of the application defined in the appended claims.

Claims

1. An agricultural machine thresher characterized by, The utility model relates to a rice processing machine, which comprises: a cylinder (1) for threshing rice, which is located at the upper part of the machine frame; a feeding device (2) arranged at the front end of the cylinder (1) for feeding the rice to be threshed into the cylinder (1); a vibrating screen (3) arranged below the cylinder (1) for screening and separating the threshed rice and impurities, the front part of the vibrating screen (3) being provided with a movable baffle (4) with an adjustable inclination angle; an air separation device (5) arranged behind the vibrating screen (3) for further separating light impurities and unthreshed rice by air flow generated by a fan; a collection box (6) arranged below the vibrating screen (3) and the air separation device (5) for collecting the separated clean rice; wherein the feeding device (2), the cylinder (1), the vibrating screen (3), the air separation device (5) and the collection box (6) are sequentially connected to form a continuous rice processing path; and the movable baffle (4) of the vibrating screen (3) is provided with a plurality of guide vanes (8) at the top thereof, the lengths of the guide vanes (8) gradually increasing so that the rice can be dispersed along the direction of the guide vanes (8) when entering the vibrating screen (3).

2. A grain mill for an agricultural machine as claimed in claim 1 wherein: The movable baffle (4) is connected to the output end of the cylinder (1) through a hinge (7) so that the inclination angle of the movable baffle (4) can be freely adjusted.

3. The agricultural machine thresher as claimed in claim 1, wherein: The feeding device (2) comprises a feeding roller (10) and a plurality of stirring teeth (11), the stirring teeth (11) being spirally arranged on the feeding roller (10).

4. A grain mill for an agricultural machine as claimed in claim 3 wherein: The feeding device (2) is further provided with an adjusting mechanism (12) for adjusting the rotating speed of the feeding roller (10).

5. A grain mill for an agricultural machine as claimed in claim 4 wherein: The air separation device (5) comprises a speed-adjustable fan (13).

6. The agricultural machine thresher of claim 1, wherein: The vibrating screen (3) is further provided with a plurality of layered screens (14) with different hole diameters.

7. A grain mill for an agricultural machine as claimed in claim 6 wherein: The air inlet of the air separation device (5) is provided with a filter screen (9).

8. A grain mill for an agricultural machine as claimed in claim 6 wherein: ​

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