Pneumatic lifting and rotating distributing device for squat silo

Abstract

A pneumatic lifting and rotating distributing device for a squat silo comprises a grain conveying pipe, a transfer granary and a lifting system. A telescopic grain channel formed by a plurality of layers of telescopic conical barrels is arranged below the transfer granary, the telescopic conical barrel on the bottommost layer is connected with a reducer pipe with a valve, a lower pipe opening of the reducer pipe is connected with an inner ring of a slewing bearing, and a rotary distributing cylinder is connected below an outer ring of the slewing bearing. The height of the lifting platform and the opening and closing of the valve in the reducer pipe are controlled through the hoisting equipment so as to ensure that grains are gradually scattered from the bottom of the silo upwards to enter the silo, the grain grading phenomenon is reduced, the pneumatic motor drives the material distribution groove to rotate, and uniform grain distribution in the same grain surface height is ensured. By controlling the opening and closing of the valve in the reducer pipe and the telescopic grain channel, the grain flows in a limited manner when entering the grain silo, and does not freely fall, so that the grain silo disclosed by the utility model is prevented from being automatically graded and crushed when entering the grain silo.

Description

Technical Field

[0001] The utility model relates to a pneumatic lifting and rotating material distribution device for a shallow round silo, belonging to the technical field of grain transportation and storage. Background Art

[0002] Grain silos mainly include shallow silos, vertical silos, steel silos, etc. Due to their high degree of mechanization and small footprint, they have been greatly developed and applied in my country in recent years. In particular, shallow silos are the main type of silos that have been built and are planned to be built. At present, shallow silos basically use the central feeding method. Since the distance between the central discharge port of the shallow silo and the bottom of the silo is high, generally about 25-35 meters, it is inevitable that the grain will be automatically graded (the grain falls freely from top to bottom, and the size, weight, shape, impurities, etc. of the particles form natural stratification) and broken, which seriously affects the quality of the grain and is not conducive to the safe storage of grain. If there is a serious grading of grain, it will affect the effective and uniform ventilation of the grain layer in the silo, resulting in safety concerns such as heating, mildew, germination, and deterioration of materials during the grain storage period. The existing motor-driven rotary distributor suspended on the top of the shallow silo is a metal feed pipe that directly enters the inside of the shallow silo from the outside of the top of the shallow silo, which will form a thermal bridge effect and destroy the air tightness of the shallow silo, which is not conducive to the preservation of grain in the shallow silo. At present, a series of anti-grading and anti-crushing devices and equipment have appeared in China, such as: wall-mounted folding plate anti-crushing device, pressure door umbrella-shaped multi-point distributor, valve-controlled anti-grading device, CNC rotary grain distributor, multi-functional central pressure reducing pipe, top-suspended motor-driven rotary distributor and other devices and equipment. Although the above devices and equipment can solve the problem of automatic grading and crushing of grain to a certain extent, they all have certain defects, such as unsatisfactory effect, inability to take into account both anti-grading and anti-crushing, or difficult maintenance, or safety hazards, such as large dust in the silo, which belongs to the dust explosion hazard area. Therefore, the above technical problems still need to be solved. Utility Model Content

[0003] The utility model provides a pneumatic lifting and rotating material distribution device for a shallow round silo, which aims to solve the technical problems of automatic grading and crushing of grains during the process of grain entering the silo.

[0004] The technical solution of the utility model is achieved in this way:

[0005] A pneumatic lifting and rotating material distribution device for a shallow silo, comprising a telescopic grain channel, a pneumatic rotating material distribution device, and a lifting system; the characteristics are:

[0006] The telescopic grain channel is composed of a plurality of telescopic cone barrels 202 which are connected to the transfer grain silo 2 below the silo and are connected in sequence in the vertical direction. The telescopic cone barrels 202 are hollow cone barrels that are connected from top to bottom and are larger at the top and smaller at the bottom. The plurality of telescopic cone barrels can be nested, stacked or connected up and down. Three fixed rings 203 are symmetrically arranged on the outer wall of the telescopic cone barrel. After three load-bearing suspension ropes 201 are symmetrically arranged on the outer side of the telescopic grain channel and fixedly connected to the inner wall of the top of the silo 6, each load-bearing suspension rope passes through a fixed ring of the telescopic cone barrel 202 on the top layer and is respectively fastened to bear the load; three connecting ropes 204 are symmetrically arranged on the side wall of the telescopic grain channel, and each connecting rope is respectively fastened to the fixed ring on the same side of the telescopic cone barrel from top to bottom to limit the connection interval between the barrels; the end of the connecting rope on the telescopic cone barrel 202 on the bottom layer is connected and fixed to the top flange 208 on the reducer 205;

[0007] The pneumatic rotary material distribution device 3 is arranged below the telescopic grain channel, and includes a lifting platform 401, an air motor 302, a reduction gear 303, a slewing bearing 304, a rotary material distribution cylinder 308 and a material distribution trough 309. The lifting platform 401 is a circular or square flat plate with a hole in the middle, and an L-shaped bracket 301 is installed on the top of the lifting platform 401. The air motor is installed on the bracket 301. A reduction mechanism is provided inside the air motor, and the reduction gear 303 is connected to the output shaft; the slewing bearing 304 includes an outer ring 305, a ball 306, an inner ring 307, a sealing ring 313, a taper pin 315, a ball plug 316 and a bolt 317. The end faces of the outer ring 305 and the inner ring 307 are both distributed with a plurality of threaded holes in the circumferential direction. The outer wall of the outer ring 305 is provided with a gear ring and the reduction gear 303. The speed gears are meshed, the upper end face of the inner ring 307 is bolted to the bottom of the reducer 205 to receive it, the lower end face of the outer ring 305 is bolted to the upper end of the rotating distributing cylinder 308, and the inner ring is connected to the reducer and the rotating distributing cylinder to transport grain; the upper end of the rotating distributing cylinder 308 is provided with an outer flange-shaped flange connected to the inner ring, the bottom of the rotating distributing cylinder 308 is closed and the center is raised upward, so as to form the bottom of the raised conical grain distributor 314 in the distributing cylinder, and the two sides of the rotating distributing cylinder 308 are respectively connected to a distributing groove 309, the inside of the rotating distributing cylinder is connected to the distributing groove, and a plurality of distributing ports 310 are provided on both sides of the distributing groove 309, and the edges of the distributing ports 310 are provided with baffles 311 inclined toward the groove, and the adjacent baffles form a material guide channel for the distributing port;

[0008] The lifting system 4 includes a fixed pulley block 402, a movable pulley block 408, a wire rope 403 and a lifting device 404. The fixed pulley block 402 is installed on the inner wall of the top of the silo, and the movable pulley block 408 is installed on the lifting platform. One end of the wire rope 403 is fixed to the side wall of the silo, and the other end bypasses the fixed pulley block 402 and the movable pulley block 408 to be connected to the lifting device 404 to control the lifting of the lifting platform.

[0009] A pneumatic lifting and rotating material distribution device for a shallow circular silo, wherein the upper part of the reducer 205 is a cylindrical structure, and the lower part is a funnel-shaped structure and is provided with a valve 206; the upper pipe mouth of the reducer 205 is provided with a top flange 208, and the top flange 208 is an inner flange structure; the lower pipe mouth of the reducer 205 is provided with a bottom flange 207, and the bottom flange 207 is an outer flange structure; an oblique fixed beam 209 is provided between the outer side wall of the reducer 205 and the lifting platform 401; the bottom flange 207 on the reducer is connected to the upper end face of the inner ring 307.

[0010] A pneumatic lifting and rotating material distribution device for a shallow circular warehouse, wherein the inner and outer ring side walls of the slewing support bearing are provided with arc-shaped grooves for accommodating balls 306, and the inner ring is provided with a ball mounting structure, that is, a through hole intersecting the arc-shaped groove is provided on the side wall of the inner ring 307, and the balls are installed in the arc-shaped groove from the through hole, and the through hole is plugged into the ball plug to seal it, and the cone pin 315 is inserted in the up and down directions through the inner ring and the ball plug to fix it, and the ball plug 316 is a cylindrical structure with a threaded hole at the outer end and a groove corresponding to the arc-shaped groove at the inner end, and a bolt 317 is screwed into the threaded hole on the ball plug to support the cone pin for fixing.

[0011] The pneumatic lifting and rotating material distribution device for a shallow silo, wherein the fixed pulley group 402 is a fixed pulley group A405, a fixed pulley group B406, and a fixed pulley group C407, each fixed pulley group is arranged in a triangle and installed on the inner wall of the top of the silo, each fixed pulley group includes two fixed pulleys, and the movable pulley group 408 is installed on the lifting platform, and the movable pulley group 408 includes a movable pulley A409 corresponding to the fixed pulley group A, a movable pulley B410 corresponding to the fixed pulley group B, and a movable pulley C411 corresponding to the fixed pulley group C. The arrangement structure of the wire rope 403 is: the end of the wire rope is fixedly connected to the inner wall of the silo, and the other end passes around the fixed pulley group A. The fixed pulley on one side of 405 is changed direction and then vertically moves downward to reach the movable pulley A409 on the lifting platform. After bypassing the movable pulley A409 and changing direction, it is vertically connected to the fixed pulley on the other side of the fixed pulley group A405. After bypassing the fixed pulley on the other side of the fixed pulley group A405, it is horizontally connected to the fixed pulley group B406 to the right. The arrangement structure of the steel wire rope 403 among the fixed pulley group B406, the movable pulley B410, the fixed pulley group C407 and the movable pulley C411 is the same as the above arrangement structure. After bypassing the fixed pulley on the other side of the fixed pulley group C407, the steel wire rope 403 is horizontally connected to the lifting equipment 404 to control the lifting platform to maintain horizontal lifting.

[0012] The pneumatic lifting and rotating material distribution device for a shallow circular silo is described, wherein a pair of hook ropes 5 are symmetrically provided on the inner wall of the top of the silo 6.

[0013] In the pneumatic lifting and rotating material distribution device for a shallow silo, a hanging and fixing device 7 is arranged on the side of the lifting platform 401, and the hanging and fixing device 7 is a ring-shaped handrail structure that can allow the hook rope 5 to be hooked.

[0014] In the pneumatic lifting and rotating material distribution device for a shallow silo, a telescopic sleeve 312 is added between the telescopic cone barrel 202 and the reducer 205 at the bottom layer.

[0015] Beneficial effects of the utility model:

[0016] The utility model uses a lifting system to lift the pneumatic rotary material distribution device, stretch or retract the telescopic grain channel, and cooperate with the pneumatic rotary material distribution device to gradually distribute grain into the silo from the bottom of the silo upward, thereby reducing the occurrence of grain grading. The pneumatic motor drives the material distribution trough to rotate to ensure that the grain is evenly distributed at the same grain surface height. By controlling the valve switch in the reducer and the telescopic grain channel, the grain forms a restricted flow when entering the silo, and does not produce free fall motion, so that the grain silo of the utility model can avoid automatic grading and crushing when the grain enters the silo. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of the utility model when the grain is fed in.

[0018] Figure 2 This is a schematic diagram of the overall structure of the utility model when the grain feeding is completed.

[0019] Figure 3 This is a schematic diagram of the overall structure of the second embodiment of the utility model.

[0020] Figure 4 It is a top view schematic diagram of the engagement between the reduction gear and the slewing bearing of the utility model.

[0021] Figure 5 This is a schematic sectional view of the AA plane of the connection relationship between the reduction gear and the slewing bearing, the reducer and the rotating material distributing cylinder of the utility model.

[0022] Figure 6 It is a top view schematic diagram of the connection relationship between the rotating material distributing drum and the material distributing trough of the utility model.

[0023] Figure 7 This is a BB section diagram of the connection between the rotary material distributing cylinder and the material distributing trough of the utility model.

[0024] FIG8(a) is a cross-sectional schematic diagram of the telescopic cone barrel of the utility model.

[0025] FIG8(b) is a top view schematic diagram of the connection relationship between the telescopic cone barrel of the utility model and the load-bearing suspension rope on the top of the silo.

[0026] Fig. 9 This is a top view of the reducer pipe of the utility model.

[0027] Fig.10 It is a CC-plane cross-sectional schematic diagram of the reducer of the utility model.

[0028] Fig.11 It is a bottom view schematic diagram of the reducer of the utility model.

[0029] Fig.12 This is a schematic diagram of the structure of the lifting system of the utility model.

[0030] Fig.13 It is a cross-sectional schematic diagram of the telescopic sleeve of the second embodiment of the utility model,

[0031] Fig.14 It is a top view schematic diagram of the slewing bearing of the utility model.

[0032] Fig.15 It is a DD-surface cross-sectional schematic diagram of the slewing bearing of the utility model.

[0033] Description of the accompanying drawings Grain conveying pipe 1, transit granary 2, load-bearing lifting rope 201, telescopic cone barrel 202, fixing ring 203, connecting rope 204, reducer 205, valve 206, bottom flange 207, top flange 208, fixing beam 209, pneumatic rotary material distribution device 3, motor bracket 301, pneumatic motor 302, reduction gear 303, slewing bearing 304, outer ring 305, ball 306, inner ring 307, rotary material distribution cylinder 308, material distribution trough 309, material distribution Mouth 310, baffle 311, telescopic sleeve 312, sealing ring 313, conical grain distributor 314, cone pin 315, ball plug 316, bolt 317, lifting system 4, lifting platform 401, fixed pulley block 402, wire rope 403, lifting equipment 404, fixed pulley block A405, fixed pulley block B406, fixed pulley block C407, movable pulley block 408, movable pulley A409, movable pulley B410, movable pulley C411, hook rope 5, silo 6, suspension fixing device 7. DETAILED DESCRIPTION

[0034] The specific structure and implementation methods of the utility model are described in detail below with reference to the accompanying drawings.

[0035] The utility model discloses a pneumatic lifting and rotating material distribution device for a shallow round silo, comprising a telescopic grain channel, a pneumatic rotating material distribution device and a lifting system;

[0036] The telescopic grain channel is composed of a plurality of telescopic cone barrels 202 which are connected to the transfer grain bin 2 of the silo below and are connected in sequence in the vertical direction. As shown in FIG8(a), the telescopic cone barrel 202 is a cone barrel with a hollow interior, which is connected from top to bottom and larger at the top and smaller at the bottom. The plurality of telescopic cone barrels can be nested, stacked or connected up and down. Figure 1 As shown in FIG8(b), three fixing rings 203 are symmetrically arranged on the outer wall of the telescopic cone barrel, and after three load-bearing suspension ropes 201 are symmetrically arranged on the outer side of the telescopic grain channel and fixedly connected to the inner wall of the top of the silo 6, each load-bearing suspension rope passes through a fixing ring of the telescopic cone barrel 202 on the top layer and is respectively buckled and connected to the load-bearing; three connecting ropes 204 are symmetrically arranged on the side wall of the telescopic grain channel, and each connecting rope is respectively buckled and connected with the fixing ring on the same side of the telescopic cone barrel from top to bottom to limit the connection interval distance between the barrels; the end of the connecting rope on the telescopic cone barrel 202 on the bottom layer is connected and fixed to the top flange 208 on the reducer 205;

[0037] See also Figure 1As shown, the pneumatic rotary material distribution device 3 is arranged below the telescopic grain channel, and includes a lifting platform 401, a pneumatic motor 302, a reduction gear 303, a slewing bearing 304, a rotary material distribution cylinder 308 and a material distribution trough 309. The lifting platform 401 is a circular or square flat plate with a hole in the middle, and an L-shaped bracket 301 is installed on the top. The pneumatic motor is installed on the bracket 301. A reduction mechanism is provided inside the pneumatic motor, and the reduction gear 303 is connected to the output shaft of the pneumatic motor; see Fig.15 As shown, the slewing bearing 304 includes an outer ring 305, balls 306, an inner ring 307, a sealing ring 313, a taper pin 315, a ball plug 316 and a bolt 317. The end faces of the outer ring 305 and the inner ring 307 are both provided with a plurality of threaded holes along the circumferential direction, see Figure 5 As shown, a gear ring is provided on the outer wall of the outer ring 305 to mesh with the reduction gear, the upper end surface of the inner ring 307 is bolted to the bottom of the reducer 205 to receive it, the lower end surface of the outer ring 305 is bolted to the upper end of the rotating distribution cylinder 308, and the inner ring is connected to the reducer and the rotating distribution cylinder to transport grain; see Figure 6-Figure 7 As shown, the upper tube mouth of the rotating distributing cylinder 308 is provided with an outer flange-shaped flange connected to the inner ring, the bottom of the rotating distributing cylinder 308 is closed and the center is raised upward, so as to form the bottom of a raised conical grain distributor 314 in the distributing cylinder, and the two sides of the rotating distributing cylinder 308 are respectively connected to a distributing groove 309, and the interior of the rotating distributing cylinder is connected to the distributing groove, and a plurality of distributing ports 310 are provided on both sides of the distributing groove 309, and the edges of the distributing ports 310 are provided with baffles 311 inclined toward the groove, and the adjacent baffles form a material guide channel of the distributing port;

[0038] The lifting system 4 includes a fixed pulley block 402, a movable pulley block 408, a wire rope 403 and a lifting device 404. The fixed pulley block 402 is installed on the inner wall of the top of the silo, and the movable pulley block 408 is installed on the lifting platform. One end of the wire rope 403 is fixed to the side wall of the silo, and the other end bypasses the fixed pulley block 402 and the movable pulley block 408 to be connected to the lifting device 404 to control the lifting of the lifting platform.

[0039] The pneumatic lifting and rotating material distribution device for a shallow silo, wherein Figure 9-10As shown, the upper part of the reducer 205 is a cylindrical structure, and the lower part is a funnel-shaped structure and is provided with a valve 206. The upper pipe mouth of the reducer 205 is provided with a top flange 208, and the top flange 208 is an inner flange structure; the lower pipe mouth of the reducer 205 is provided with a bottom flange 207, and the bottom flange 207 is an outer flange structure. An oblique fixed beam 209 is arranged between the outer side wall of the reducer 205 and the lifting platform 401; the bottom flange 207 on the reducer is connected to the upper end face of the inner ring 307.

[0040] The pneumatic lifting and rotating material distribution device for a shallow silo, wherein Fig.15 As shown, the inner and outer ring side walls of the slewing bearing are provided with arc-shaped grooves for accommodating balls 306, and the inner ring is provided with a ball mounting structure, that is, a through hole intersecting the arc-shaped groove is provided on the side wall of the inner ring 307, and the balls are installed in the arc-shaped groove from the through hole, and the through hole is plugged into the ball plug to seal it, and the cone pin 315 is inserted in the up and down directions to pass through the inner ring and the ball plug to fix it. The ball plug 316 is a cylindrical structure with a threaded hole at the outer end and a groove corresponding to the arc-shaped groove at the inner end. A bolt 317 is screwed into the threaded hole on the ball plug to support the cone pin for fixing.

[0041] The pneumatic lifting and rotating material distribution device for a shallow silo, wherein Fig.12 The fixed pulley block 402 shown is a fixed pulley block A405, a fixed pulley block B406, and a fixed pulley block C407. Each fixed pulley block is arranged in a triangle and installed on the inner wall of the top of the silo. Each fixed pulley block includes two fixed pulleys. The movable pulley block 408 is installed on the lifting platform. The movable pulley block 408 includes a movable pulley A409 corresponding to the fixed pulley block A, a movable pulley B410 corresponding to the fixed pulley block B, and a movable pulley C411 corresponding to the fixed pulley block C. The arrangement structure of the steel wire rope 403 is that the end of the steel wire rope is fixedly connected to the inner wall of the silo, and the other end bypasses the fixed pulley on one side of the fixed pulley block A405 to redirect Then it reaches the movable pulley A409 on the lifting platform vertically downward, bypasses the movable pulley A409 and changes direction before being connected vertically upward to the fixed pulley on the other side of the fixed pulley group A405, bypasses the fixed pulley on the other side of the fixed pulley group A405 and then connects horizontally to the fixed pulley group B406 to the right. The arrangement structure of the steel wire rope 403 among the fixed pulley group B406, the movable pulley B410, the fixed pulley group C407 and the movable pulley C411 is the same as the above-mentioned arrangement structure. After bypassing the fixed pulley on the other side of the fixed pulley group C407, the steel wire rope 403 is horizontally connected to the lifting equipment 404 to control the lifting platform to maintain horizontal lifting.

[0042] The pneumatic lifting and rotating material distribution device for a shallow circular silo is described, wherein a pair of hook ropes 5 are symmetrically provided on the inner wall of the top of the silo 6.

[0043] In the pneumatic lifting and rotating material distribution device for a shallow silo, a hanging and fixing device 7 is arranged on the side of the lifting platform 401, and the hanging and fixing device 7 is a ring-shaped handrail structure that can allow the hook rope 5 to be hooked.

[0044] The pneumatic lifting and rotating material distribution device for a shallow silo, wherein Figure 3 As shown, a telescopic sleeve 312 is added between the telescopic cone barrel 202 and the reducer 205 at the bottom layer.

[0045] The method for operating the pneumatic lifting and rotating material distribution device for a shallow silo comprises the following steps:

[0046] (1) Turn on the grain conveying equipment, and the grain flows into the reducer pipe after passing through the transfer granary and the telescopic grain channel;

[0047] (2) Start the lifting equipment, and the lifting platform begins to descend until it stops 1m-2m from the lowest discharge port of the material distribution chute to the bottom of the silo; the telescopic grain channel is lengthened;

[0048] (3) When the grain in the reducer is filled to 60%-80% of the height, open the valve in the reducer and start the pneumatic motor on the lifting platform to drive the feeding trough to rotate, and the grain begins to enter the warehouse;

[0049] (4) When the height of the grain at the bottom of the silo is 0.3m-0.5m from the lowest discharge port of the feeding chute, start the lifting equipment again, the lifting platform rises 1m-2m, and the telescopic grain channel shortens accordingly, while continuing to keep the grain entering the silo;

[0050] (5) Repeat the above operation until the grain storage height reaches the design requirements; after the grain storage operation is completed, close the lifting equipment, pneumatic motor and valve in the reducer, hook the hanging fixture limiter with the hook rope, and fix the lifting platform.

[0051] The operating method of the pneumatic lifting and rotating material distribution device of a shallow circular silo is described, wherein the lifting platform is driven to rise and fall by a lifting device, and the telescopic grain channel is driven to synchronously extend and retract. At the same time, the material distribution trough is driven to rotate by a pneumatic motor, and the lifting platform rotates upward from the bottom of the silo to distribute grain into the silo; the grain forms a restricted flow in the telescopic grain channel and the reducer, and no free fall motion occurs.

[0052] The specific implementation methods of the utility model are further described in detail below:

[0053] See also Figure 3In another embodiment, a telescopic sleeve 312 is provided between the bottom telescopic cone barrel 202 and the reducer 205. The telescopic sleeve 312 is connected from top to bottom by multiple sleeves with increasing diameters. The interior is hollow. The flange-shaped outer flange at the bottom of the inner sleeve is hooked to the flange-shaped inner flange at the top of the outer sleeve to limit the position. Each layer of the inner sleeve can be slid into the outer sleeve of the outer layer. The outside of the telescopic sleeve is provided with a non-metallic telescopic dust cover.

[0054] See also Fig.10 A top flange 208 is provided at the upper pipe opening of the reducer 205. The top flange 208 is an inner flange structure, which can limit the upward and downward movement range of the bottom telescopic cone barrel.

[0055] The utility model discloses a pneumatic lifting and rotating material distribution device for a shallow round silo, which is composed of a grain conveying pipe, a transfer silo, a telescopic grain channel, a reducing pipe, a lifting system, a pneumatic rotating material distribution device, a hook rope and the like.

[0056] The telescopic grain channel is composed of several metal telescopic cones, which are connected by connecting ropes. A fixed collar is installed on the top side of each metal telescopic cone. The top telescopic cone is connected to the top of the silo through the load-bearing rope on the fixed collar. The top diameter of the telescopic cone is 50 cm to 80 cm, and the bottom diameter is 40 cm to 70 cm. A telescopic non-metallic dust cover can be installed on the outside of the telescopic cone.

[0057] Lifting equipment includes: pneumatic winch, pneumatic hoist. Lifting equipment is installed inside the silo, close to the access hole.

[0058] For installation scheme of pulley and wire rope, see Fig.12 As shown, the fixed pulley blocks are fixed pulley block A, fixed pulley block B, and fixed pulley block C. Each fixed pulley block is arranged in a triangle and installed on the inner wall of the top of the silo. Each fixed pulley block includes two fixed pulleys. The movable pulley block is installed on the lifting platform. The movable pulley block includes a movable pulley A corresponding to the fixed pulley block A, a movable pulley B corresponding to the fixed pulley block B, and a movable pulley C corresponding to the fixed pulley block C. The arrangement structure of the wire rope is: the end of the wire rope is fixedly connected to the inner wall of the silo, and the other end passes around the fixed pulley. The fixed pulley on one side of group A is changed direction and reaches the movable pulley A on the lifting platform vertically downward, bypasses the movable pulley A and changes direction and is connected vertically upward to the fixed pulley on the other side of fixed pulley group A, bypasses the fixed pulley on the other side of fixed pulley group A and is connected horizontally to the right to the fixed pulley group B. The arrangement structure of the wire rope in the fixed pulley group B, movable pulley B, fixed pulley group C and movable pulley C is the same as the above arrangement structure. After the wire rope bypasses the fixed pulley on the other side of fixed pulley group C, it is horizontally connected to the lifting equipment to control the lifting platform to maintain horizontal lifting.

[0059] See also Fig.13As shown, the telescopic sleeve is composed of multiple layers of circular metal sleeves. The telescopic sleeve is connected from top to bottom by multiple layers of sleeves with diameters from small to large. The interior is hollow. The flange-shaped outer flange at the bottom of the inner sleeve is hooked to the flange-shaped inner flange at the top of the outer sleeve to limit the position. Each layer of the inner sleeve can be slid into the outer sleeve of its outer layer. There is a non-metallic telescopic dust cover on the outside of the telescopic sleeve. The length of each section of the telescopic sleeve is 1.5 meters to 6 meters. The diameter of the circular telescopic sleeve is 40 centimeters to 120 centimeters. A tuning fork sensor for detecting the height of the grain surface is installed in the telescopic sleeve. The top layer of the telescopic sleeve is installed below the telescopic cone. A reducer is connected below the bottom layer of the telescopic sleeve.

[0060] The lifting platform is a round or square flat plate with a round diameter of 2-4 meters and a square side length of 2-4 meters. A movable pulley block is installed on the lifting platform.

[0061] The reducer has flanges on the upper and lower ends, and valves are installed inside. The valves are pneumatic gate valves or pneumatic flap valves that can be remotely controlled. The reducer is connected to the lifting platform through a fixed beam.

[0062] The lower pipe opening of the reducer is connected to the inner ring of the slewing bearing through a flange, and the outer ring of the slewing bearing is connected to the upper pipe opening of the rotating material distributing cylinder through a flange. The outer wall of the outer ring of the slewing bearing is provided with teeth. The inside of the rotating material distributing cylinder is connected to the material distributing trough, and preferably two material distributing troughs are provided, and one or four material distributing troughs can also be installed. The angle between the material distributing trough and the ground is greater than 30 degrees. The material distributing trough is provided with material distributing openings in different directions.

[0063] The lifting platform is equipped with an air motor, which meshes with the outer ring gear of the slewing bearing through the reduction gear on the output shaft of the air motor.

[0064] A material level detection sensor for detecting the grain surface height is installed at the bottom of the lifting platform.

[0065] A hook rope is installed on the inner wall of the top of the silo. After the grain storage operation is completed, the hook rope hooks the suspension fixture on the lifting platform to limit the position and fix the lifting platform.

[0066] Embodiment 1

[0067] The technical solution of the utility model is specifically implemented in a shallow cylindrical silo with a diameter of 25 meters and a height of 30 meters from the ground to the top feed inlet.

[0068] Six fixed pulleys are provided on the inner wall of the top of the silo 6, see Figure 1 As shown, a pneumatic winch 404 is installed on the platform inside the side wall of the silo 6, and a 1.5 cubic meter transfer granary 2 is installed at the top of the silo. The diameter of the transfer granary's discharge port is 40 cm.

[0069] See also Figure 1As shown in Figures 8(a) and 8(b), a telescopic grain channel composed of multiple layers of metal telescopic cones 202 is provided at the lower part of the transit grain silo, and the total height of the multiple layers of telescopic cones is 20 meters. Three fixed collars are symmetrically arranged on the outer wall of each telescopic cone barrel, and the bottom diameter of the telescopic cone barrel is 40 cm and the top diameter is 50 cm. After three load-bearing suspension ropes 201 are symmetrically arranged on the outside of the telescopic grain channel and fixedly connected to the inner wall of the top of the silo 6, each load-bearing suspension rope passes through a fixed collar of the topmost telescopic cone barrel 202 and is respectively buckled to bear the load; three connecting ropes 204 are symmetrically arranged on the side wall of the telescopic grain channel, and each connecting rope is respectively buckled and connected to the fixed collar on the same side of the telescopic cone barrel from top to bottom to limit the connection spacing between the barrels.

[0070] A reducer 205 is installed below the telescopic cone barrel at the bottom layer, and the diameter of the reducer is 40 cm. Fig.10 As shown, the reducer has a top flange 208 at the top of the pipe opening, and a bottom flange 207 at the bottom of the pipe opening. A pneumatic gate valve 206 is installed in the reducer. A fixed beam 209 is installed on the side wall of the reducer, and the other end of the fixed beam is connected to the lifting platform 401. The lifting platform is a circular flat plate with a diameter of 2 meters. A movable pulley block is installed on the lifting platform, and a material level detection sensor for detecting the height of the grain surface is installed under the lifting platform. Fig.12 As shown, the lifting platform is equipped with three movable pulleys, which are passed around the fixed pulley on the top of the silo by a steel wire rope 403 and finally connected to the pneumatic winch 404. The pulling force of the pneumatic winch is 2 tons.

[0071] See also Figure 5 As shown, the lower pipe opening of the reducer is connected to the inner ring 307 of the slewing bearing 304 through a flange, the outer ring 305 of the slewing bearing is connected to the upper opening of the rotating material distributing cylinder 308 through a flange, and teeth are provided on the outer wall of the outer ring of the slewing bearing. The inner diameter of the inner ring 307 of the slewing bearing is 40 cm, and teeth are provided on the outer side of the outer ring 305. An air motor is installed on the lifting platform, which meshes with the outer ring gear of the slewing bearing through the reduction gear on the output shaft of the air motor.

[0072] See also Figure 7 As shown, the bottom of the rotating distributing cylinder 308 is closed and convex upward, thereby forming a conical grain distributor 314. Two distributing troughs 309 are installed on both sides of the rotating distributing cylinder 308, each of which is 6 meters long. The distributing trough is a U-shaped trough with a U-shaped cross section and a side length of 30 cm. The side wall of the distributing trough is opened with distributing openings 310 in different directions. The angle between the distributing trough and the ground is 35 degrees.

[0073] The inner wall at the top of the silo is provided with a hook rope 5. After the grain storage operation is completed, the hook rope hooks the suspension type fixture 7 on the lifting platform 401 to limit the position and fix the lifting platform.

[0074] Embodiment 2

[0075] See also Figure 3 As shown, based on the first embodiment, a telescopic sleeve 312 is added between the bottom telescopic cone barrel 202 and the reducer 205. Fig.13 As shown, the telescopic sleeve 312 is connected from top to bottom by three layers of sleeves with diameters from small to large, the internal hollow is connected from top to bottom, and the adjacent two layers of sleeves are connected by the flange-shaped outer flange at the bottom of the inner sleeve hooking the flange-shaped inner flange at the top of the outer sleeve. Each layer of the inner sleeve can be slid into the outer sleeve of its outer layer. The bottom end of the telescopic cone barrel 202 is provided with a flange. Each section of the telescopic sleeve is 2 meters long, and there are 3 sections in total, with diameters of 40 cm, 44 cm, and 48 cm respectively. The remaining technical solutions are the same as those in the first embodiment and will not be repeated.

Claims

1. A pneumatic lifting and rotating material distribution device for a shallow silo, comprising a telescopic grain channel, a pneumatic rotating material distribution device, and a lifting system; characterized in that: The telescopic grain channel is composed of a plurality of telescopic cone barrels (202) which are connected to the transfer grain bin (2) of the silo below and are connected in sequence in the vertical direction. The telescopic cone barrels (202) are hollow cone barrels that are connected from top to bottom and are larger at the top and smaller at the bottom. The plurality of telescopic cone barrels can be nested, stacked or connected up and down. Three fixing rings (203) are symmetrically arranged on the outer wall of the telescopic cone barrel. Three load-bearing suspension ropes (201) are symmetrically arranged on the outer side of the telescopic grain channel to connect with the fixed inner wall of the top of the silo (6). After the connection is fixed, each load-bearing suspension rope passes through a fixed collar of the telescopic cone barrel (202) at the top layer and is respectively buckled to be connected to the load-bearing; three connecting ropes (204) are symmetrically arranged on the side wall of the telescopic grain channel, and each connecting rope is respectively buckled to be connected to the fixed collar on the same side of the telescopic cone barrel from top to bottom to limit the connection interval between the barrels; the end of the connecting rope on the telescopic cone barrel (202) at the bottom layer is connected and fixed to the top flange (208) on the reducer (205); The pneumatic rotary material distribution device (3) is arranged below the telescopic grain channel, and comprises a lifting platform (401), an air motor (302), a reduction gear (303), a slewing bearing (304), a rotary material distribution cylinder (308) and a material distribution trough (309). The lifting platform (401) is a circular or square flat plate with a hole in the middle, and an L-shaped bracket (301) is installed on the upper side thereof. The air motor is installed on the bracket (301). A reduction mechanism is provided inside the air motor, and the reduction gear (303) is connected to the output shaft thereof. The slewing bearing (304) comprises an outer ring (305), a ball (306), an inner ring (307), a sealing ring (313), a taper pin (315), a ball plug (316) and a bolt (317). The end faces of the outer ring (305) and the inner ring (307) are both provided with a plurality of threaded holes distributed along the circumferential direction. The outer wall of the outer ring (305) is provided with a plurality of threaded holes. A gear ring is provided on the top to mesh with the reduction gear, the upper end surface of the inner ring (307) is bolted to the bottom of the reducer (205) to receive it, the lower end surface of the outer ring (305) is bolted to the upper end of the rotating distribution cylinder (308), and the inner ring is connected to the reducer and the rotating distribution cylinder to transport grain; the upper end of the rotating distribution cylinder (308) is provided with an outer flange connected to the inner ring, and the bottom of the rotating distribution cylinder (308) is closed. The rotating distributing cylinder (308) is protruded upward, thereby forming a protruding conical bottom of the grain distributor (314) in the distributing cylinder. A distributing groove (309) is connected to both sides of the rotating distributing cylinder (308). The interior of the rotating distributing cylinder is connected to the distributing groove. A plurality of distributing openings (310) are provided on both sides of the distributing groove (309). The edges of the distributing openings (310) are provided with baffles (311) inclined toward the groove. Adjacent baffles form a material guide channel of the distributing opening. The lifting system (4) comprises a fixed pulley block (402), a movable pulley block (408), a steel wire rope (403) and a lifting device (404); the fixed pulley block (402) is installed on the inner wall of the top of the silo; the movable pulley block (408) is installed on the lifting platform; one end of the steel wire rope (403) is fixed to the side wall of the silo, and the other end passes through the fixed pulley block (402) and the movable pulley block (408) and is connected to the lifting device (404) to control the lifting of the lifting platform.

2. A pneumatic lifting and rotating material distribution device for a shallow silo as claimed in claim 1, characterized in that: The upper part of the reducer (205) is a cylindrical structure, and the lower part is a funnel-shaped structure and is provided with a valve (206). The upper pipe mouth of the reducer (205) is provided with a top flange (208), and the top flange (208) is an inner flange structure; the lower pipe mouth of the reducer (205) is provided with a bottom flange (207), and the bottom flange (207) is an outer flange structure. An inclined fixed beam (209) is provided between the outer side wall of the reducer (205) and the lifting platform (401); the bottom flange (207) on the reducer is connected to the upper end surface of the inner ring (307).

3. The pneumatic lifting and rotating material distribution device for a shallow silo as claimed in claim 1, characterized in that: The inner and outer ring side walls of the slewing bearing are provided with arc-shaped grooves for accommodating balls (306); the inner ring is provided with a ball mounting structure, in which a through hole intersecting the arc-shaped groove is provided on the side wall of the inner ring (307); the balls are installed in the arc-shaped groove from the through hole, and the through hole is plugged into the ball plug to seal it; the cone pin (315) is inserted in the up and down directions to pass through the inner ring and the ball plug to fix it; the ball plug (316) is a cylindrical structure, with a threaded hole provided at the outer end and a groove corresponding to the arc-shaped groove provided at the inner end; a bolt (317) is screwed into the threaded hole on the ball plug to support the cone pin for fixing.

4. The pneumatic lifting and rotating material distribution device for a shallow silo as claimed in claim 1, characterized in that: The fixed pulley group (402) comprises a fixed pulley group A (405), a fixed pulley group B (406), and a fixed pulley group C (407). Each fixed pulley group is arranged in a triangle and installed on the inner wall of the top of the silo. Each fixed pulley group comprises two fixed pulleys. The movable pulley group (408) is installed on the lifting platform. The movable pulley group (408) comprises a movable pulley A (409) corresponding to the fixed pulley group A, a movable pulley B (410) corresponding to the fixed pulley group B, and a movable pulley C (411) corresponding to the fixed pulley group C. The arrangement structure of the steel wire rope (403) is that one end of the steel wire rope is fixedly connected to the inner wall of the silo, and the other end passes around the fixed pulley on one side of the fixed pulley group A (405) and is redirected to be vertically moved thereafter. The wire rope (403) reaches the movable pulley A (409) on the lifting platform downward, bypasses the movable pulley A (409), changes direction, and then vertically connects to the fixed pulley on the other side of the fixed pulley group A (405). After bypassing the fixed pulley on the other side of the fixed pulley group A (405), it is horizontally connected to the fixed pulley group B (406) to the right. The arrangement structure of the steel wire rope (403) at the fixed pulley group B (406), the movable pulley B (410), the fixed pulley group C (407) and the movable pulley C (411) is the same as the above arrangement structure. After bypassing the fixed pulley on the other side of the fixed pulley group C (407), the steel wire rope (403) is horizontally connected to the lifting equipment (404), so as to control the lifting platform to maintain horizontal lifting.

5. The pneumatic lifting and rotating material distribution device for a shallow silo as claimed in claim 1, characterized in that: A pair of hook ropes (5) are symmetrically arranged on the inner wall of the top of the silo (6).

6. A pneumatic lifting and rotating material distribution device for a shallow silo as claimed in claim 5, characterized in that: A hanging and fixing device (7) is arranged on the side of the lifting platform (401), and the hanging and fixing device (7) is a ring-shaped handrail structure capable of hooking the hook rope (5).

7. The pneumatic lifting and rotating material distribution device for a shallow silo as claimed in claim 5, characterized in that: A telescopic sleeve (312) is added between the telescopic cone barrel (202) at the bottom layer and the reducer (205).

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