Galvanized assembly type composite cleaning sieve for grain cleaning

Abstract

A galvanized assembly type composite cleaning sieve for grain cleaning comprises a rack, a cylinder cleaning sieve and a vibration cleaning sieve, wherein the cylinder cleaning sieve and the vibration cleaning sieve are arranged on the rack. For the cylindrical cleaning sieve, the rotating axis of the cylindrical cleaning sieve is inclined, a feeding hole and a sundry outlet of the cylindrical cleaning sieve are distributed on the end surfaces of the head part and the tail part of the cylindrical cleaning sieve, and the feeding hole is higher than the sundry outlet; a driving motor of the cylindrical cleaning sieve is positioned on the rack on one side of the tail part of the cylindrical cleaning sieve; the impurity outlet is connected with a large impurity collecting pipeline; for the vibration cleaning sieve, a sieve bed of the vibration cleaning sieve covers the projection of the cylindrical cleaning sieve on the ground; the sieve bed is inclined, and the inclination angle of the sieve bed corresponds to the inclination angle of the rotating axis of the cylindrical cleaning sieve; two discharge holes of the vibration cleaning sieve are formed in the lower end of the sieve bed; the two groups of elastic supporting bodies are distributed on the rack below the front and rear bottom surfaces of the sieve bed; a vibration motor of the vibration cleaning sieve is mounted on the rack; a discharge hole in the top surface of the screening bed is connected with a small impurity collecting pipeline; and a discharge hole in the bottom surface of the screening bed is a grain discharge hole.

Description

Technical Field

[0001] This utility model belongs to the field of grain machinery technology, specifically a galvanized assembled composite cleaning screen for grain cleaning. Background Technology

[0002] Grain cleaning screens are commonly used equipment for cleaning and removing impurities. Currently, common cleaning screens include single-layer cylindrical cleaning screens (for cleaning large impurities), double-layer cylindrical cleaning screens (for cleaning large impurities and some small impurities), and vibrating cleaning screens (for cleaning small impurities). Large impurities mainly include longer stalks in the grain, while small impurities mainly include chaff, gravel, sand, and dust.

[0003] The aforementioned cleaning screens are typically used in series to form a continuous production line to achieve the desired cleaning effect. For example, a single- or double-layer cylindrical screen is used in the preceding cleaning process, and a vibrating cleaning screen is used in the subsequent process, with both used in series. Since the material is moved by gravity, the equipment in the preceding process is located above the equipment in the subsequent process. However, in a standard factory building, due to height limitations, it is impossible to install two separate sets of equipment on the same floor. Therefore, the two sets of equipment must be installed on separate floors, with a conveyor system serving as the material flow channel between them. Alternatively, a new factory building with sufficient height can be constructed, which increases the overall project cost.

[0004] Meanwhile, the above-mentioned equipment generally adopts the form of integral welding of ordinary carbon steel, which requires surface painting for corrosion protection. Conventional paint surface treatment is difficult to guarantee its corrosion protection function for a long time in open-air environment and coastal high-salt environment. Wind and sun exposure and acid rain erosion will accelerate the aging of paint, requiring regular surface paint maintenance, such as acid washing, grinding and repainting. Summary of the Invention

[0005] To address the aforementioned problems in the existing technology, this utility model proposes a galvanized assembled composite cleaning screen for grain cleaning, including a frame, and a cylindrical cleaning screen and a vibrating cleaning screen on the frame; the vibrating cleaning screen is located below the cylindrical cleaning screen.

[0006] For cylindrical cleaning screens:

[0007] The rotation axis of the cylindrical cleaning screen is inclined. The feed inlet and debris outlet of the cylindrical cleaning screen are distributed on the end faces of the head and tail of the cylindrical cleaning screen, and the feed inlet is higher than the debris outlet. The debris outlet is connected to the large debris collection pipe. The drive motor of the cylindrical cleaning screen is located on the frame on the side of the tail of the cylindrical cleaning screen (i.e. the debris outlet).

[0008] For vibrating cleaning screens:

[0009] The screen bed of the vibrating cleaning screen covers the projection of the cylinder cleaning screen on the ground; the screen bed is inclined, and the inclination angle of the screen bed corresponds to the inclination angle of the rotation axis of the cylinder cleaning screen; both of the discharge ports of the vibrating cleaning screen are at the low end of the screen bed; the two groups of elastic support bodies are distributed on the frame below the front and rear bottom surfaces of the screen bed, and the vibrating motor of the vibrating cleaning screen is installed on the frame; the top surface discharge port of the screen bed is connected with the small impurity collecting pipeline; and the bottom surface discharge port of the screen bed is the discharge port of the grain.

[0010] Further, the circulating air separator is further included, and the circulating air separator is located at one side of the discharge port of the vibrating cleaning screen.

[0011] The discharge port of the grain of the screen bed is connected with the feed port of the circulating air separator through a pipeline; the material outlet of the circulating air separator is connected with the grain collecting pipeline, and the impurity outlet of the circulating air separator is connected with the dust collecting pipeline.

[0012] The large impurity collecting pipeline, the small impurity collecting pipeline, the grain collecting pipeline and the dust collecting pipeline are all located on the same side of the frame.

[0013] Further, the blowing device is further included; the blowing device is an air blowing device, and the air outlet of the air blowing device is installed in the large impurity collecting pipeline.

[0014] Preferably, the cylinder cleaning screen is a double cylinder screen.

[0015] Further, the rotation shaft of the cylinder cleaning screen is located in the cylinder cleaning screen, and the rotation shaft is connected to the inner wall of the cylinder cleaning screen through a support connecting rod; the output shaft of the driving motor is connected with the transmission shaft through a belt transmission structure; the transmission shaft is horizontal, and is connected with the frame through a bearing device; the support roller is connected to the frame at one side of the head of the cylinder cleaning screen, and supports the outer wall edge of the head of the cylinder cleaning screen.

[0016] Preferably, the frame, the cylinder cleaning screen and the main body of the vibrating cleaning screen are composed of hot galvanized plates and galvanized bolts / nuts; the nuts used in the screen bed part of the vibrating cleaning screen are nylon anti-loose nuts.

[0017] Further, the shell is installed on the periphery of the frame, and the cylinder cleaning screen and the main body of the vibrating cleaning screen are located in the shell; the shell is provided with a manhole which can be opened and closed (for the access of maintenance personnel).

[0018] Compared with the prior art, the utility model has the following advantages:

[0019] ①The structure design is optimized, the cylinder cleaning screen, the vibrating cleaning screen and the circulating air separator are integrated into an integrated single machine device, the respective cleaning characteristics and advantages are exerted, the structure is compact, the single machine cleaning effect is better, and the single machine can realize the centralized treatment of large impurities, small impurities, light small impurities and dust. The land occupation area and the height of the equipment are greatly reduced.

[0020] 2. The galvanized assembled composite cleaning screen is suitable for long-term use of indoor and outdoor high-humidity tail gas, and the galvanized plate material with better corrosion resistance is adopted to avoid welding damage to the galvanized layer. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structural schematic view (perspective) of the cleaning screen;

[0022] Figure 2 is a left view schematic view of Figure 1 ;

[0023] Figure 3 is a partial schematic view of the cylindrical cleaning screen part;

[0024] In the figure: rack 1, cylindrical cleaning screen 2, vibrating cleaning screen 3, circulating air separator 4, feed inlet 5, impurity outlet 6, driving motor 7, large impurity collection pipeline 8, screen bed 9, elastic support body 10, vibrating motor 11, small impurity collection pipeline 12, grain collection pipeline 13, dust collection pipeline 14, blowing device 15, rotating shaft 16, support connecting rod 17, bearing device 18, transmission shaft 19, universal joint 20, support roller 21, speed reducer 22, shell 23, manhole 24. DETAILED DESCRIPTION

[0025] The utility model is further described below in combination with the drawings and specific embodiments.

[0026] Reference Figures 1-2 , a galvanized assembled composite cleaning screen for grain cleaning, comprising a rack 1, a cylindrical cleaning screen 2 and a vibrating cleaning screen 3 on the rack; the vibrating cleaning screen is below the cylindrical cleaning screen;

[0027] For the cylindrical cleaning screen 2:

[0028] The rotating axis of the cylindrical cleaning screen is inclined, the feed inlet 5 and the impurity outlet 6 of the cylindrical cleaning screen are distributed on the end faces of the head and tail of the cylindrical cleaning screen, and the position of the feed inlet is higher than that of the impurity outlet; the driving motor 11 of the cylindrical cleaning screen is located on the rack at one side of the tail of the cylindrical cleaning screen; the impurity outlet 6 is connected with the large impurity collection pipeline 8;

[0029] For the vibrating cleaning screen 3:

[0030] The screen bed of the vibrating cleaning screen covers the projection of the cylinder cleaning screen on the ground; the screen bed 9 is inclined, and the inclination angle thereof corresponds to the inclination angle of the rotation axis of the cylinder cleaning screen; both discharge outlets of the vibrating cleaning screen are at the low end of the screen bed; the two groups of elastic support bodies 10 (which can be common springs or air springs) are distributed on the frame below the front and rear bottom surfaces of the screen bed, and the vibrating motor 11 of the vibrating cleaning screen is installed on the frame; the top discharge outlet of the screen bed is connected with the small impurity collecting pipeline 12; and the bottom discharge outlet of the screen bed is the discharge outlet of the grain.

[0031] The circulating air separator 4 is further included, which is arranged at the side of the discharge outlet of the vibrating cleaning screen; the discharge outlet of the grain of the screen bed is connected with the feed inlet of the circulating air separator through a pipeline; the material outlet of the circulating air separator is connected with the grain collecting pipeline 13, and the impurity outlet of the circulating air separator is connected with the dust collecting pipeline 14; the large impurity collecting pipeline, the small impurity collecting pipeline, the grain collecting pipeline and the dust collecting pipeline are all arranged on the same side of the frame.

[0032] The blowing device 17 is further included; the blowing device is an air blowing device, and the air outlet thereof is arranged in the large impurity collecting pipeline 8.

[0033] Further referring to Figure 3 , the cylinder cleaning screen is a double-cylinder screen. The rotation shaft 16 of the cylinder cleaning screen is arranged in the interior of the cylinder cleaning screen, and the rotation shaft is connected to the inner wall of the cylinder cleaning screen through a support connecting rod 17; the output shaft of the driving motor 7 is connected with a transmission shaft 19 through a belt transmission structure (in this example, a speed reducer 22 is further connected between the driving motor 7 and the transmission shaft 19, and the belt transmission mode is adopted among the three); the transmission shaft is horizontal, and is connected with the frame through a bearing device 18, and the transmission shaft 19 is connected with the rotation shaft 16 through a universal joint 20; the support roller 21 is connected to the frame at the side of the head of the cylinder cleaning screen, and supports the outer wall edge of the head of the cylinder cleaning screen.

[0034] The frame, the main body of the cylinder cleaning screen and the vibrating cleaning screen are all made of hot-dip galvanized plates and assembled through galvanized bolts / nuts; the nuts used in the screen bed part of the vibrating cleaning screen are nylon lock nuts. The shell 23 made of hot-dip galvanized plates is arranged on the periphery of the frame, and the main body of the cylinder cleaning screen and the vibrating cleaning screen are arranged in the shell; the shell is provided with a manhole 25 which can be opened and closed.

[0035] The cleaning screen integrates the double-cylinder cleaning screen, the vibrating cleaning screen and the circulating air separator into one whole machine.

[0036] The double-cylinder screen is arranged at the upper part of the vibrating screen body, and the screen mesh of the double-cylinder screen is controlled to rotate by the driving motor; the grain is removed of large impurities by the rotating two-layer screen meshes with different diameters, and then falls into the vibrating screen by gravity;

[0037] Under the action of the vibration motor excitation, the grain is in a fluidized state through the vibrating screen mesh, and the grain is filtered through the vibrating screen mesh to remove small impurities and then enters the tail circulating air separator.

[0038] The circulating air separator separates the light impurities and dust in the grain by using wind power and centrifugal force, and finally discharges the clean grain outside the machine.

[0039] The large impurities are mainly long straw in the grain, which has poor flowability, especially fresh grain just after harvesting, and the flowability of straw and chaff discharged outside the machine is even worse. A blowing device is added in the large impurity discharge channel to blow the discharged large impurities by wind power to prevent them from accumulating in the machine. Pipe blowing is usually used as a method of cleaning pipes, and the cleaning screen uses it to prevent material accumulation.

[0040] In the engineering implementation, the main body of the cleaning screen is made of hot-dipped galvanized sheet with a zinc layer of 275 grams per square meter, and adopts a fully assembled structure without welding to avoid the defects of welding damage to the zinc layer. The hot-dipped galvanized sheet is cut into parts by CNC laser cutting, and then processed into shape by sheet metal bending. The equipment shell sheet metal parts are assembled by galvanized bolts and nuts.

[0041] When designing the galvanized assembled structure, the structural strength is considered, and all assembly bolts are made of 8.8 grade high-strength galvanized bolts and nuts. Considering the vibration of the vibrating screen body during work, the bolts have anti-loosening measures, that is, the vibrating screen body is made of nylon anti-loosening nuts.

[0042] The galvanized assembled composite cleaning screen for grain cleaning combines the double-cylinder cleaning screen, the vibrating cleaning screen and the circulating air separator into one whole, and can realize the centralized treatment of large impurities, small impurities, light small impurities and dust with a single machine. It greatly reduces the investment and land area, height of the equipment.

[0043] Since the main body is made of hot-dipped galvanized sheet with a zinc layer of 275 grams per square meter, which has better corrosion resistance, it is suitable for long-term use in indoor and outdoor, high-humidity and high-salt environments, and the expected open-air service life is up to 20 years.

Claims

1. A galvanized assembled composite cleaning screen for grain cleaning, characterized in that: Includes a frame, and a cylindrical cleaning screen and a vibrating cleaning screen on the frame; the vibrating cleaning screen is located below the cylindrical cleaning screen; For cylindrical cleaning screens: The rotation axis of the cylindrical cleaning screen is inclined. The feed inlet and debris outlet of the cylindrical cleaning screen are distributed on the end faces of the head and tail of the cylindrical cleaning screen, and the feed inlet is higher than the debris outlet. The drive motor of the cylindrical cleaning screen is located on the frame on one side of the tail of the cylindrical cleaning screen. The debris outlet is connected to the large debris collection pipe. For vibrating cleaning screens: The screen bed of the vibrating cleaning screen covers the projection of the cylindrical cleaning screen on the ground; the screen bed is inclined, and its inclination angle corresponds to the inclination angle of the rotation axis of the cylindrical cleaning screen; the two discharge ports of the vibrating cleaning screen are located at the bottom of the screen bed; two sets of elastic supports are distributed on the frame below the front and rear bottom surfaces of the screen bed, and the vibrating motor of the vibrating cleaning screen is mounted on the frame; the discharge port on the top surface of the screen bed is connected to the small impurity collection pipe; the discharge port on the bottom surface of the screen bed is the discharge port of the grain.

2. The galvanized assembled composite cleaning screen for grain cleaning according to claim 1, characterized in that: It also includes a circulating air separator, which is located on the discharge side of the vibrating cleaning screen; The grain outlet of the sieve bed is connected to the feed inlet of the circulating air separator through a pipe; the material outlet of the circulating air separator is connected to the grain collection pipe, and the impurity outlet of the circulating air separator is connected to the dust collection pipe. The large miscellaneous collection pipe, small miscellaneous collection pipe, grain collection pipe, and dust collection pipe are all located on the same side of the frame.

3. The galvanized assembled composite cleaning screen for grain cleaning according to claim 1, characterized in that: It also includes a purging device; the purging device is an air purging device, and its air outlet is installed inside the large debris collection pipe.

4. The galvanized assembled composite cleaning screen for grain cleaning according to claim 1, characterized in that: The cylindrical cleaning screen is a double cylindrical screen.

5. The galvanized assembled composite cleaning screen for grain cleaning according to claim 1, characterized in that it is cylindrical. The rotating shaft of the cleaning screen is inside the cylindrical cleaning screen, and the rotating shaft is connected to the inner wall of the cylindrical cleaning screen through a support connecting rod; the output shaft of the drive motor is connected to the drive shaft through a belt drive structure; the drive shaft is horizontal and is connected to the frame through a bearing device, and the drive shaft and the rotating shaft are connected through a universal joint; a support roller is connected to the frame on one side of the head of the cylindrical cleaning screen, and the support roller supports the outer edge of the head of the cylindrical cleaning screen.

6. The galvanized assembled composite cleaning screen for grain cleaning according to claim 1, characterized in that: The frame, cylindrical cleaning screen, and vibrating cleaning screen are all assembled from hot-dip galvanized sheets using galvanized bolts / nuts. The nuts used in the screen bed section of the vibrating cleaning screen are nylon lock nuts.

7. The galvanized assembled composite cleaning screen for grain cleaning according to claim 1, characterized in that... The frame is surrounded by a hot-dip galvanized steel shell, inside which the main bodies of the cylindrical cleaning screen and the vibrating cleaning screen are located; the shell has a manhole that can be opened and closed.

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