Double-pipe folding type material distribution device for silo, multi-layer silo and operation method thereof

Abstract

The silo double-pipe folding type distributing device, multi-layer discharging silo and operation method comprise a grain conveying pipe, a silo, a transfer silo, a central grain inlet pipe, a supporting sleeve and a folding distributing chute, the transfer silo is provided with a grain inlet pipe valve, a top distributing pipe and a top distributing pipe valve; a plurality of in-silo feeding pipes are arranged on the central grain inlet pipe at intervals, the in-silo feeding pipes are provided with discharging valves, distributing pipes and folding distributing chutes; the folding distributing chutes are arranged below the pipe mouths of the distributing pipes and are installed on the outer wall of the supporting sleeve through supports. By controlling the top distributing pipe valve, the grain inlet pipe valve, the discharging valve and the folding distributing chute, the grain is kept in a limited flow during the whole grain inlet process and free flow is not generated. Meanwhile, the grain inlet is from the bottom of the silo to the upper surface gradually, so that the occurrence of grain grading is reduced.

Description

Technical Field

[0001] This invention relates to a double-tube folding material distribution device for silos, a multi-level material discharging silo, and its operation method, belonging to the field of grain storage technology. Background Technology

[0002] Grain silos mainly include shallow circular silos, vertical silos, and steel silos, characterized by high mechanization and small footprint. Currently, most silos use a center-feed system. Because the distance between the central discharge outlet and the bottom of the silo is high, typically 20-50 meters, automatic grain grading (grain falling freely from top to bottom, naturally stratifying by particle size, weight, shape, and impurities) and breakage are unavoidable, severely impacting grain quality and hindering safe storage. Severe grain grading can impair effective and uniform ventilation within the silo, leading to potential safety risks such as material overheating, mold, sprouting, and spoilage during storage. Currently, a series of anti-grading and anti-breakage devices and equipment have emerged in China, such as: wall-mounted folding plate anti-breakage devices, pressure gate-type umbrella-shaped multi-point distributors, valve-controlled anti-grading devices, CNC rotary grain distributors, and multi-functional central pressure-reducing pipes. While the above-mentioned devices and equipment can solve the problems of automatic grading and crushing of grain to a certain extent, they all have certain drawbacks, such as unsatisfactory results, inability to simultaneously prevent grading and crushing, difficulty in maintenance, or safety hazards, such as high dust levels inside the storage area, which constitutes a dust explosion hazard zone. Therefore, the above-mentioned technical problems still need to be solved. Summary of the Invention

[0003] This invention provides a double-tube folding material distribution device for silos, a multi-layer material discharging silo, and an operation method, with the aim of solving the technical problems of automatic grading and crushing during the grain storage process.

[0004] The technical solution of this invention is implemented as follows:

[0005] A silo double-pipe folding material distribution device includes a central grain inlet pipe and an internal feeding pipe; characterized in that:

[0006] Multiple feed pipes 302 are vertically spaced and connected to the central grain inlet pipe 3, and are connected to the inside of the pipes; the feed pipes 302 are obliquely downward and are equipped with discharge valves 303. Multiple distribution pipes 304 are connected around the feed pipe 302 below the discharge valve and are radially distributed in all directions. At least four of the distribution pipes are provided with folded distribution grooves 305 that are connected and extended.

[0007] The folded fabric trough 305 is a U-shaped trough with multiple fabric holes 308 on its bottom surface. The bottom of the folded fabric trough, which is connected to the fabric tube 304, is hinged to the support frame 306 via a pivot. A lifting rope 405 is provided at the suspended end of the folded fabric trough. The lifting ropes connected to each folded fabric trough in the same feed tube in the same compartment pass around the pulley and are connected at the same end to the same traction rope 503 or to separate traction ropes. The traction ropes are pulled up and down by the winch 504 to control the unfolding or closing of the folded fabric trough.

[0008] A multi-level feeding silo containing the aforementioned silo double-pipe folding feeding device is characterized in that a grain transport pipe 1 and a winch 504 are provided at the top outside the silo, and a transfer grain silo 2 connected to the grain transport pipe and a central grain inlet pipe 3 connected to the transfer grain silo are provided at the top inside the silo.

[0009] Multiple winches 504 are provided on the top outer wall of the silo 5. Each winch is connected to a traction rope 503. The lower end of each traction rope 503 is connected to a lifting rope connected to each of the folded fabric troughs of the same feed pipe inside the silo.

[0010] A support sleeve 4 is erected vertically in the middle of the silo, and its upper and lower ends are connected and fixed to the silo. The support sleeve 4 is composed of multiple sleeve units 406 connected together. Each sleeve unit has a flange at both the upper and lower ends of the pipe opening, and they are connected as a whole by the flange. The support sleeve has inspection holes 401 for installing sealing doors on the side wall of each sleeve unit, and they are arranged in a row along the axial direction. The support sleeve 4 is sleeved on the outside of the transfer grain silo 2 and the central grain inlet pipe 3.

[0011] The support frame 306 is fixed on the outer wall of the sleeve unit above the flange; the lower part of the traction rope is located inside the support sleeve; a lifting rope hole is opened on the side wall of the support sleeve, and a pulley 502 is installed inside the support sleeve corresponding to the lifting rope hole 311; the lifting rope passes through the lifting rope hole and goes around the pulley before connecting to the traction rope inside the support sleeve.

[0012] The feeding pipe 302 and the distribution pipe 304 inside the silo extend obliquely downward from the side wall of the support sleeve 4 and are located inside the silo; the folded distribution trough 305 is located outside the support sleeve and inside the silo.

[0013] The support sleeve is provided with a suspension rope 404 and is connected to the folded fabric groove for auxiliary suspension.

[0014] The central grain inlet pipe 3 is vertically installed inside the support sleeve. The top end of the central grain inlet pipe 3 is connected to the bottom outlet of the transfer grain silo 2 and a grain inlet pipe valve 301 is installed at this position. The central grain inlet pipe extends downwards to near the bottom of the silo. The bottom closed end of the central grain inlet pipe is welded with a grain inlet pipe support 312 and supported and fixed at the bottom of the silo.

[0015] The multi-level feeding silo includes a transfer grain silo 2 installed on the inner wall of the top of the silo and connected to a grain transport pipe outside the silo. The transfer grain silo 2 is equipped with a traction rope pipe 205, which extends from the top of the transfer grain silo to the side wall of the transfer grain silo. Multiple sets of suspended top feeding pipes 201 are installed around the side wall of the transfer grain silo 2 and are connected to the inner wall of the top of the silo 5 by top suspension ropes 204 to suspend and support the top feeding pipes. Each top feeding pipe 201 is equipped with a top feeding pipe valve 202 and multiple feeding holes are opened on the top feeding pipe.

[0016] The multi-level material silo is wherein the support frame is composed of an upper support leg 309 and a lower support leg 310 hinged to a rotating shaft 307.

[0017] The multi-level feeding silo includes a transverse connecting device 402 between the central grain inlet pipe 3 and the supporting sleeve 4. The transverse connecting device 402 has a rod-shaped structure in the middle and arc surfaces at both ends, with through holes on the arc surfaces. Both ends of the transverse connecting device 402 are fixedly connected to the side walls of the central grain inlet pipe and the supporting sleeve by bolts.

[0018] The multi-layered material silo is provided with a limiting groove 403 on the outer wall of the support sleeve 4, which corresponds to the folded fabric groove.

[0019] The multi-level feeding silo has a central grain inlet pipe that bends at one side to form a bottom feeding pipe 313, which passes through the side wall of the supporting sleeve and is located inside the silo. Multiple distribution pipes 304 are arranged around the pipe wall and pass through the side wall of the supporting sleeve and are located inside the silo. The bent part at the end of the central grain inlet pipe forms the bottom closed end.

[0020] The operation method of the multi-level material discharge silo is characterized by including the following steps:

[0021] (1) Before the grain is put into the warehouse, close all valves except the central grain inlet valve and start the winch to unfold all the folded cloth troughs.

[0022] (2) Grain is transported to the transfer grain warehouse and the central grain inlet pipe through the grain conveying pipe above the silo. When the grain in the central grain inlet pipe is half full, the valve at the bottom of the central grain inlet pipe is opened, and the grain enters the bottom of the silo through the bottom layer of the inlet feeding pipe and the distribution pipe.

[0023] (3) When the grain height is about to reach the height of the feed pipe outlet, the grain height in the central grain inlet pipe begins to rise. At this time, open the discharge valve on the feed pipe in the fourth layer (second to last layer) of the silo, and the grain enters the silo through the feed pipe, the folded feed trough and the feed pipe. When the grain height is close to the bottom discharge port of the fourth layer folded feed trough and the feed pipe, pull the traction rope through the winch at the top of the silo, the folded feed trough flips and retracts, and is fixed by the limit slot.

[0024] (4) When the grain height is about to reach the height of the feed pipe outlet, the grain height in the central grain inlet pipe begins to rise. At this time, open the discharge valve on the feed pipe in the third layer (third to last layer) of the silo, and the grain enters the silo through the feed pipe, the folded feed trough and the feed pipe; when the grain height is close to the bottom discharge port of the third layer folded feed trough and the feed pipe, pull the traction rope through the winch at the top of the silo, the folded feed trough flips and retracts, and is fixed by the limit slot;

[0025] (5) Follow the above operation method and continue in this way until the top layer of folded cloth trough and cloth pipe discharge port are filled with grain, then close the grain inlet valve.

[0026] (6) Open the valve of the top feeding pipe. Grain enters the silo through the top feeding pipe. When the grain height in the silo reaches the specified feeding height, the feeding is stopped.

[0027] By employing the above operational methods, it is ensured that the grain flows in a restricted manner during its flow through the central grain inlet pipe, preventing free flow and ensuring that the grain flows slowly downwards within the central grain inlet pipe to prevent grain breakage. At the same time, the grain is fed from the bottom of the silo and gradually spread upwards, reducing the occurrence of grain grading.

[0028] The operation method of the multi-level feeding silo involves controlling the top feeding pipe valve, the grain inlet pipe valve, the feeding valve, and the folding feeding trough to ensure that the grain flows in a restricted manner throughout the entire feeding process, without free flow.

[0029] The beneficial effects of this invention are:

[0030] This invention features a central grain inlet pipe connected to a multi-stage in-silo feeding pipe. By controlling the top distribution pipe valve, grain inlet pipe valve, discharge valve, and folded distribution trough, the grain is kept in a restricted flow throughout the entire grain feeding process, preventing free flow. Simultaneously, grain feeding begins at the bottom of the silo and gradually progresses upwards. The folded distribution trough facilitates transporting grain over a longer distance to the silo edge, reducing grain grading. Attached Figure Description

[0031] Figure 1 This is a schematic elevation view of the overall structure of the multi-layered material silo of the present invention in its unfolded state of the folded material trough.

[0032] Figure 2 This is a schematic elevation view of the overall structure of the folded fabric trough in the multi-layered material silo of the present invention in its folded state.

[0033] Figure 3 This is a front view schematic diagram of the overall structure of the multi-level material silo embodiment two of the present invention.

[0034] Figure 4 This is a top view schematic diagram of the top structure of the multi-level material discharge silo of the present invention.

[0035] Figure 5 This is a top view schematic diagram of the connection relationship between the support sleeve and the intermediate grain silo in this invention.

[0036] Figure 6 This is a schematic diagram of the AA cross-section showing the connection relationship between the support sleeve and the intermediate grain silo in this invention.

[0037] Figure 7 This is a schematic diagram showing the connection positions of the in-warehouse feeding pipe, the central grain inlet pipe, and the distribution pipe in this invention.

[0038] Figure 8 This is a top view schematic diagram of the connection positions of the in-warehouse feeding pipe, the central grain inlet pipe, and the distribution pipe in this invention.

[0039] Figure 9 This is a schematic diagram showing the connection relationship between the in-warehouse feeding pipe, the fabric distribution pipe, and the folding fabric trough in this invention.

[0040] Figure 10 yes Figure 9 Schematic diagram of the BB section.

[0041] Figure 11 This is a partial cross-sectional view of the connection relationship between the fabric tube, the support sleeve, and the folded fabric groove in this invention.

[0042] Figure 12 yes Figure 11 Side view diagram,

[0043] Figure 13 This is a top view schematic diagram of the folded fabric groove in this invention.

[0044] Figure 14 This is a schematic cross-sectional view of the CC plane of the folded fabric groove in this invention.

[0045] Figure 15 This is a front view schematic diagram of the lateral connecting device in this invention.

[0046] Figure 16 This is a side view of the transverse connecting device in this invention.

[0047] Figure 17 This is a frontal schematic diagram showing the connection relationship between the lifting rope, the traction rope, and the folded fabric groove in this invention.

[0048] Figure 18 This is a side view schematic diagram illustrating the connection relationship between a single lifting rope and a traction rope in this invention.

[0049] Figure 19 This is a schematic diagram of the connection relationship of the sleeve unit in this invention.

[0050] The attached diagrams are numbered and described as follows: 1. Grain conveying pipe; 2. Transfer grain bin; 3. Top feeding pipe; 4. Top feeding pipe valve; 5. Feeding hole; 6. Top suspension rope; 7. Traction rope pipe; 8. Center grain inlet pipe; 9. Grain inlet pipe valve; 10. In-bin feeding pipe; 21. Discharge valve; 22. Feeding pipe; 33. Folding feeding trough; 4. Support frame; 5. Rotating shaft; 6. Feeding hole in the trough; 7. Upper support leg; 8. Lower support leg; 9. Lifting rope hole; 10. Grain inlet pipe support column; 11. Bottom in-bin feeding pipe; 12. Support sleeve; 13. Inspection hole; 14. Lateral connection device; 15. Limiting slot; 16. Suspension rope; 17. Lifting rope; 18. Sleeve unit; 19. Silo; 20. Winch; 21. Pulley; 22. Traction rope; 33. Hoist; 44. Detailed Implementation

[0051] The specific structure and embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0052] See Figure 1 , 2 As shown in Figures 9-14, 17, and 18, a silo double-pipe folding material distribution device of the present invention includes a central grain inlet pipe and an in-silo feeding pipe 302.

[0053] Multiple feed pipes 302 are vertically spaced and connected to the central grain inlet pipe 3, and are connected to its interior; the feed pipes 302 are arranged diagonally downwards (see [reference]). Figure 1The feed pipe inside the silo is equipped with a discharge valve 303. Multiple distribution pipes 304 are radially distributed around the feed pipe 302 located below the discharge valve. At least four of the distribution pipes are equipped with folded distribution grooves 305 for connection and extension (see attached image). Figure 9 , 10 ;

[0054] The folded fabric groove 305 is a U-shaped groove (see details). Figure 13 , 14 The bottom surface of the trough has multiple fabric holes 308. The folded fabric trough is hinged to the support frame 306 at the bottom of its docking end with the fabric tube 304 via a pivot. A lifting rope 405 is provided at the suspended end of the folded fabric trough. Figure 17 The lifting ropes connected to the folded fabric troughs of the feeding pipe within the same silo, after passing over pulleys, are all connected at their ends to the same traction rope 503. (See figure) Figure 18 Alternatively, each element can be connected to a traction rope, which is moved up and down by a winch 504 to control the unfolding or folding of the folding fabric trough. The winch 4 can be a single-rope winch or a four-rope synchronous winch.

[0055] A multi-layered material discharging silo containing the aforementioned double-tube folding material distribution device, as described in this invention, see [link to relevant documentation]. Figure 1 As shown, a grain transport pipe 1 and a winch 504 are provided on the top outside the silo, and a transfer grain bin 2 connected to the grain transport pipe and a central grain inlet pipe 3 connected to the transfer grain bin are provided on the top inside the silo.

[0056] Multiple winches 504 are provided on the top outer wall of the silo 5. Each winch is connected to a traction rope 503. The lower end of each traction rope 503 is connected to a lifting rope connected to each of the folded fabric troughs of the same feed pipe inside the silo.

[0057] A support sleeve 4 is vertically installed in the middle of the silo, and its upper and lower ends are connected and fixed to the silo. The support sleeve 4 is composed of multiple sleeve units 406 connected together. Each sleeve unit has a flange at both the upper and lower ends of its pipe opening, and they are connected as a whole by the flanges. (See figure) Figure 19 The support sleeve has inspection holes 401 for installing sealing doors on the side wall of each sleeve unit, and they are arranged in a row along the axial direction; the support sleeve 4 is sleeved on the outside of the transfer grain silo 2 and the central grain inlet pipe 3.

[0058] The support frame 306 is fixed to the outer wall of the sleeve unit above the flange; the lower part of the traction rope is located inside the support sleeve; a lifting rope hole is opened on the side wall of the support sleeve, and a pulley 502 is installed inside the support sleeve corresponding to the lifting rope hole 311. Figure 17 , 18The lifting ropes pass through the lifting rope holes and around the pulleys before connecting to the traction ropes 503 inside the support sleeve.

[0059] The feeding pipe 302 and the distribution pipe 304 inside the silo extend obliquely downwards from the side wall of the support sleeve 4 and are located inside the silo. Figure 7 , 8 As shown; the folded fabric trough 305 is located outside the support sleeve and inside the silo;

[0060] The support sleeve is provided with a suspension rope 404 and is connected to the folded fabric groove for auxiliary suspension.

[0061] The central grain inlet pipe 3 is vertically installed inside the support sleeve. The top end of the central grain inlet pipe 3 is connected to the bottom outlet of the transfer grain silo 2 and a grain inlet pipe valve 301 is installed at this position. The central grain inlet pipe extends downwards to near the bottom of the silo. The bottom closed end of the central grain inlet pipe is welded with a grain inlet pipe support 312 and supported and fixed at the bottom of the silo.

[0062] The multi-level feeding silo, wherein the transfer grain silo 2 is installed on the inner wall of the top of the silo and connected to the grain transport pipe outside the silo, and the transfer grain silo 2 is equipped with a traction rope pipe 205 (see figure). Figure 5 , 6 As shown, the traction rope pipe extends from the top of the transfer grain silo all the way to the side wall of the transfer grain silo; multiple sets of suspended top distribution pipes 201 are installed around the side wall of the transfer grain silo 2, and are connected to the inner wall of the top of the silo 5 by top suspension ropes 204 to suspend and support the top distribution pipes. Each top distribution pipe 201 is equipped with a top distribution pipe valve 202, and multiple distribution holes are opened on the top distribution pipe.

[0063] The multi-level material silo, wherein the support frame is composed of an upper support leg 309 and a lower support leg 310 hinged to a rotating shaft 307 (see reference). Figure 11 , 12 As shown.

[0064] The multi-level feeding silo includes a transverse connecting device 402 between the central grain inlet pipe 3 and the supporting sleeve 4. The transverse connecting device 402 has a rod-shaped structure in the middle and arc-shaped ends, with through holes on the arc-shaped surfaces. Figure 15 , 16 As shown, both ends of the transverse connecting device 402 are fixedly connected to the central grain inlet pipe and the side wall of the support sleeve by bolts.

[0065] The multi-level material discharge silo, wherein the outer wall of the support sleeve 4 is provided with a limiting groove 403 corresponding to the folded fabric trough. Figure 1 As shown.

[0066] The multi-level feeding silo has a bottom valve at the bottom of the central grain inlet pipe, and the end below the valve is bent to one side to form the bottommost feeding pipe 313, which passes through the side wall of the support sleeve and is located inside the silo. Multiple distribution pipes 304 are arranged around the pipe wall, which also pass through the side wall of the support sleeve and are located inside the silo. The bent part at the end of the central grain inlet pipe forms the bottom closed end.

[0067] The operation method of the multi-level discharge silo of the present invention includes the following steps: See Figure 1 As shown,

[0068] (1) Before the grain is put into the warehouse, close all valves except the central grain inlet valve 301, and start the winch to unfold all the folded cloth troughs. Figure 1 Install four layers of internal feeding pipes in the middle;

[0069] (2) Grain is transported to the transfer grain warehouse 2 and the central grain inlet pipe 3 through the grain conveying pipe 1 above the silo. When the grain in the central grain inlet pipe is half full, the valve at the bottom of the central grain inlet pipe is opened, and the grain enters the bottom of the silo through the inner feeding pipe and the distribution pipe of the lowest layer.

[0070] (3) When the grain height is about to reach the height of the feed pipe outlet, the grain height in the central grain inlet pipe begins to rise. At this time, open the discharge valve on the feed pipe in the fourth layer (second to last layer) of the silo, and the grain enters the silo through the feed pipe, the folded feed trough and the feed pipe. When the grain height is close to the bottom discharge port of the fourth layer folded feed trough and the feed pipe, pull the traction rope through the winch at the top of the silo, the folded feed trough flips and retracts, and is fixed by the limit slot.

[0071] (4) When the grain height reaches the height of the feed pipe inlet, the grain height inside the central grain inlet pipe begins to rise. At this time, open the discharge valve on the feed pipe of the third layer (third to last layer) of the silo, and the grain enters the silo through the feed pipe, the folded feed trough, and the feed pipe. When the grain height approaches the bottom discharge port of the third-layer folded feed trough and the feed pipe, pull the traction rope using the winch at the top of the silo, causing the folded feed trough to flip and retract, and be fixed by the limit slot. Figure 2 As shown;

[0072] (5) Follow the above operation method and continue in this way until the top layer of folded cloth trough and cloth pipe discharge port are filled with grain, then close the grain inlet valve.

[0073] (6) Open the top feeding pipe valve 202, and the grain enters the silo through the top feeding pipe 201. When the grain height in the silo reaches the specified feeding height, the feeding is stopped.

[0074] By employing the above operational methods, it is ensured that the grain flows in a restricted manner during its flow through the central grain inlet pipe, preventing free flow and ensuring that the grain flows slowly downwards within the central grain inlet pipe to prevent grain breakage. At the same time, the grain is fed from the bottom of the silo and gradually spread upwards, reducing the occurrence of grain grading.

[0075] The operation method of the multi-level feeding silo involves controlling the top feeding pipe valve, the grain inlet pipe valve, the feeding valve, and the folding feeding trough to ensure that the grain flows in a restricted manner throughout the entire feeding process, without free flow.

[0076] The specific embodiments of the present invention will be further described in detail below:

[0077] See Figure 1 Each feed pipe 302 in the bin is equipped with four folded fabric troughs 305. These folded fabric troughs are set outside the support sleeve 4, connecting to the fabric pipe 304 to extend the fabric length. The fabric pipe 304 is supported by the support sleeve 4. The fabric troughs are supported by the suspension rope 404, the lifting rope 405, and the support frame 306, and unfold and close under the pull of the traction rope 503. Figure 2 In the closed position. Each sleeve unit 406 has a square inspection hole 401 on its side wall for easy installation and maintenance. Above the inspection hole, there is also a lifting rope hole reserved for the traction rope.

[0078] See Figure 5-6 The transfer grain silo 2 is equipped with a traction rope pipe 205, which extends from the top of the transfer grain silo to the side wall of the transfer grain silo to facilitate separation from the grain during operation. The top distribution pipe 201 of the transfer grain silo is installed on the side wall of the transfer grain silo 2. Preferably, two vertically arranged top distribution pipes 201 are arranged as a group, and a total of 4 groups are distributed along the circumference.

[0079] See Figure 17-18 The inner wall of the support sleeve 4 is equipped with a pulley, which can reduce the friction of the traction rope when it moves.

[0080] See Figure 1 , 4 The top of the silo 5 is equipped with four winches 504, each winch is equipped with a traction rope 503, each traction rope 503 enters the support sleeve through the traction rope pipe 205 on the transfer grain silo, and is connected to the lifting rope that enters the support sleeve through the lifting rope hole 311. The lower end of each lifting rope is connected to a folding fabric trough. The winch drives the traction rope to further drive the folding fabric trough to realize the function of unfolding and folding the folding fabric trough.

[0081] See Figure 8-10The in-warehouse feeding pipe 302 is equipped with a spreading pipe and a folding spreading pipe. The in-warehouse feeding pipe, spreading pipe and folding spreading pipe extend from the perimeter of the in-warehouse feeding pipe 303 at different angles to achieve uniform spreading.

[0082] In this invention, the volume of the transit grain warehouse is preferably 1 cubic meter to 3 cubic meters.

[0083] A top feeding pipe or trough is installed on the lower side of the grain transfer silo. The number of top feeding pipes or troughs can range from 4 to 16. Each top feeding pipe or trough has a valve at its inlet to control the direction of grain transport. The length of the top feeding pipe or trough can be 5 to 10 meters. The diameter of the top feeding pipe is 10 to 20 centimeters. A discharge port can be installed on the area where the top feeding pipe extends beyond the support sleeve. Visual sensors, lidar, millimeter-wave radar, ultrasonic radar, etc., can be installed on the top feeding pipe to detect the height of the grain surface.

[0084] A central grain inlet pipe, extending vertically to the ground, is connected to the vertical discharge port at the bottom of the grain silo. The central grain inlet pipe can be made of pipe with a diameter of 30-60 cm. The lower part of the central grain inlet pipe is fixedly installed on the inner wall of the silo's bottom.

[0085] A metal support sleeve is vertically installed on the outside of the central grain inlet pipe. The lower part of the support sleeve is fixedly installed on the inner wall of the bottom of the silo. The upper part of the support sleeve is fixedly installed on the inner wall of the top of the silo. The diameter of the support sleeve can be selected from 80 cm to 150 cm, and it is used to support the material distribution pipe, support frame, top material distribution pipe, and in-silo feeding pipe, etc.

[0086] A transverse connecting device is installed between the central grain inlet pipe and the support sleeve. The transverse connecting device has a rod-shaped structure in the middle and arc-shaped surfaces at both ends, with through holes on the arc surfaces. Both ends of the transverse connecting device are fixedly connected to the side walls of the central grain inlet pipe and the support sleeve by bolts to ensure the stability of the central grain inlet pipe.

[0087] Each section of the support sleeve has square inspection holes on its side wall, arranged in a row along the axial direction. The inspection holes are spaced at fixed intervals, with a width of 40-50 cm and a height of 60-120 cm. Each inspection hole is equipped with a removable sealing door. These inspection holes facilitate installation and maintenance.

[0088] The bottom of the grain transfer silo is equipped with a grain inlet valve at the connection between the discharge port and the central grain inlet pipe.

[0089] A feed pipe is installed every 2-5 meters along the wall of the central grain inlet pipe. Preferably, a discharge valve is installed on the feed pipe at the connection point with the central grain inlet pipe. The feed pipe can be 30-60 cm in diameter. The feed pipe is installed at an angle greater than 35 degrees to the ground.

[0090] A valve is installed at the bottom of the feeding pipe inside the warehouse.

[0091] The support frame is installed above the support sleeve flange, and the length of the support frame is 20 cm to 50 cm.

[0092] The folding fabric trough is made of metal with a U-shaped cross-section. The three sides can be 10-20 cm long, and the trough itself is 4-8 meters long. The preferred number of folding fabric troughs is 4-8. A suspension rope is installed in the middle of the folding fabric trough, and a lifting rope is installed at the end.

[0093] The support sleeve is equipped with pulleys. The traction rope passes around the pulleys and connects to the winch on the top of the silo. The pulleys serve two purposes: first, to redirect the lifting rope, and second, to prevent dry friction of the lifting rope.

[0094] The side wall of the support sleeve is equipped with a limiting slot for fixing the folded fabric groove.

[0095] The preferred placement pipe has a diameter of 10-20 cm and an angle greater than 35 degrees with the ground. The preferred number of placement pipes is 4-8. The length of the placement pipe extending beyond the support sleeve is 10-50 cm.

[0096] The traction rope, lifting rope, and suspension rope can be made of materials such as steel wire rope, composite steel strip, polyester rope, polyethylene rope, and composite rope.

[0097] Electric winches, manual winches, or hoists are preferred.

[0098] The feed pipe, distribution pipe, folding distribution trough, and top distribution pipe inside the warehouse are preferably made of stainless steel or high-strength aluminum alloy.

[0099] Preferred valve types include: gate valves, slide gate valves, butterfly valves, and ball valves. Valve control methods include: electric and pneumatic. Valve operation methods include: ordinary shut-off valves and regulating valves.

[0100] Inside the central grain inlet pipe, a sensor is installed to detect the height of the grain surface, preferably a tuning fork sensor or a vision sensor.

[0101] Example 1

[0102] See Figure 1 As shown, the technical solution of the present invention is specifically implemented in a shallow circular warehouse with a diameter of 25 meters and a height of 29 meters from the ground to the eaves.

[0103] Directly below the inlet of the shallow circular silo, a 2-cubic-meter transfer grain silo is installed. Top distribution pipes are installed on the side walls of the transfer grain silo; two vertically arranged top distribution pipes form a group, distributed circumferentially, for a total of four groups. Top distribution pipe valves are installed at the connection points between the top distribution pipes and the transfer grain silo. The lengths of the top distribution pipes are: four 6-meter sections and four 8-meter sections, with a diameter of 20 centimeters. Multiple distribution openings are provided in the area where the top distribution pipes extend beyond the support sleeve.

[0104] A central grain inlet pipe, vertically extending to the bottom of the grain silo, is installed at the bottom of the transfer grain silo. This central grain inlet pipe is made of 325 stainless steel, has a diameter of 35 cm, and a wall thickness of 5 mm. The lower part of the central grain inlet pipe is fixedly installed on the inner wall of the silo's bottom. A bottom valve is installed at the bottom of the transfer grain silo.

[0105] A circular support sleeve made of 325 stainless steel is vertically installed on the outside of the central grain inlet pipe. The lower part of the support sleeve is fixedly installed on the inner wall of the bottom of the silo. The upper part of the support sleeve is fixedly installed on the inner wall of the top of the silo. The diameter of the support sleeve is 120 cm and the wall thickness is 5 mm. The support sleeve adopts a segmented structure, with each segment being 150 cm long, and every two support sleeve segments are connected by a flange.

[0106] Each sleeve unit on the support sleeve has square inspection holes on its side wall, arranged in a row along the axial direction. The inspection holes are spaced at fixed intervals, with a width of 40 cm and a height of 100 cm. A removable sealing door is installed on top of each inspection hole. These inspection holes facilitate installation and maintenance.

[0107] A transverse connecting device is installed between the central grain inlet pipe and the support sleeve. The transverse connecting device has a rod-shaped structure in the middle and arc-shaped surfaces at both ends, with through holes on the arc surfaces. Both ends of the transverse connecting device are fixedly connected to the side walls of the central grain inlet pipe and the support sleeve by bolts.

[0108] A metal in-silo feeding pipe is installed vertically every 4 meters on the wall of the central grain inlet pipe. A discharge valve is installed between the central grain inlet pipe and the in-silo feeding pipe. The in-silo feeding pipe has a diameter of 35 centimeters. The in-silo feeding pipe forms a 40-degree angle with the ground.

[0109] The bottom of the grain transfer silo is equipped with a grain inlet valve at the connection between the discharge port and the central grain inlet pipe.

[0110] The bottom compartment has a valve installed on the feeding pipe.

[0111] Each support sleeve has a support frame installed on its bottom flange, and the support frame is 40 cm long.

[0112] The folding fabric trough is made of metal, with three sides measuring 20 centimeters and a length of 6 meters. Its cross-section is U-shaped. Four folding fabric troughs are installed. A hanging rope is installed in the middle of the folding fabric trough. A lifting rope is installed at the end of the folding fabric trough.

[0113] The support sleeve is equipped with pulleys, and the lifting rope passes around the pulleys and is connected to the winch's traction rope.

[0114] The side walls of the support sleeve are equipped with limiting slots for fixing the folded fabric groove.

[0115] At the same horizontal level as the central feed pipe inside the silo, a placing pipe is also installed. The placing pipe has a diameter of 15 cm and forms a 36-degree angle with the ground. There are 8 placing pipes and 4 folded placing troughs. The length of the placing pipe extending out of the support sleeve is 50 cm.

[0116] The traction rope, suspension rope, and lifting rope are made of stainless steel wire rope.

[0117] Four sets of electric winches are installed on the top of the silo.

[0118] The feed pipe, cloth pipe, folding cloth trough, and top cloth pipe inside the warehouse are made of 325 stainless steel.

[0119] Inside the central grain inlet pipe, there is a tuning fork sensor that can detect the height of the grain surface.

[0120] Example 2

[0121] See Figure 3 As shown, the top fabric tube is replaced with a fabric trough, which has a bracket at the bottom. The remaining technical solutions are the same as in Embodiment 1 and will not be described again.

Claims

1. A silo double-pipe folding material distribution device, comprising a central grain inlet pipe and an in-silo feeding pipe; characterized in that: On the central grain inlet pipe (3), multiple in-warehouse feeding pipes (302) are arranged vertically at intervals and connected to the inside of the pipes; the in-warehouse feeding pipes (302) are set at an angle downwards, and a discharge valve (303) is provided on the in-warehouse feeding pipes; multiple distribution pipes (304) are connected around the in-warehouse feeding pipes (302) located below the discharge valve and are radially distributed in all directions; at least four of the distribution pipes are provided with folded distribution grooves (305) that are connected and extended. The folded fabric trough (305) is a U-shaped trough with multiple fabric holes (308) on its bottom surface. The bottom of the folded fabric trough, which is connected to the fabric tube (304) by a pivot, is hinged to the support frame (306). The suspended end of the folded fabric trough is provided with a lifting rope (405). The lifting ropes connected to each folded fabric trough in the same feed tube in the same compartment pass around the pulley and are connected to the same traction rope (503) or to the traction ropes respectively. The traction ropes are pulled up and down by a winch (504) to control the folded fabric trough to unfold or close. A grain transport pipe (1) and a winch (504) are provided on the top outside the silo. A transfer grain silo (2) connected to the grain transport pipe and a central grain inlet pipe (3) connected to the transfer grain silo are provided on the top inside the silo. Multiple winches (504) are provided on the top outer wall of the silo (5). Each winch is connected to a traction rope (503). The lower end of each traction rope (503) is connected to a lifting rope connected to each of the folded fabric troughs of the same feed pipe in the silo. A support sleeve (4) is erected in the middle of the silo, and its upper and lower ends are connected and fixed to the silo. The support sleeve (4) is composed of multiple sleeve units (406) connected together. Each sleeve unit has a flange at the upper and lower ends of the pipe opening, and they are connected as a whole by the flange. The support sleeve has inspection holes (401) for installing sealing doors on the side wall of each sleeve unit, and they are arranged in a row along the axial direction. The support sleeve (4) is fitted on the outside of the transfer grain silo (2) and the central grain inlet pipe (3). The support frame (306) is fixed on the outer wall of the sleeve unit above the flange; the lower part of the traction rope is located inside the support sleeve; a lifting rope hole is opened on the side wall of the support sleeve, and a pulley (502) is installed inside the support sleeve corresponding to the lifting rope hole (311); the lifting rope passes through the lifting rope hole and around the pulley and is connected to the traction rope inside the support sleeve. The feeding pipe (302) and the distribution pipe (304) inside the silo extend obliquely downward from the side wall of the support sleeve (4) and are located inside the silo; the folded distribution trough (305) is located outside the support sleeve and inside the silo; The support sleeve is provided with a suspension rope (404) on its side wall and is connected to the folded fabric groove for auxiliary suspension; The central grain inlet pipe (3) is vertically installed inside the support sleeve. The top of the central grain inlet pipe (3) is connected to the bottom outlet of the transfer grain silo (2) and a grain inlet pipe valve (301) is installed at the bottom outlet. The central grain inlet pipe extends downwards to near the bottom of the silo. The bottom closed end of the central grain inlet pipe is welded with a grain inlet pipe support (312) and fixed to the bottom of the silo. The transfer grain silo (2) is installed on the inner wall of the top of the silo and connected to the grain transport pipe outside the silo. The transfer grain silo (2) is equipped with a traction rope pipe (205) inside. The traction rope pipe extends from the top of the transfer grain silo to the side wall of the transfer grain silo. Multiple sets of suspended top distribution pipes (201) are installed around the side wall of the transfer grain silo (2) and are connected to the inner wall of the top of the silo (5) by top suspension ropes (204) to suspend and support the top distribution pipes. Each top distribution pipe (201) is equipped with a top distribution pipe valve (202) and multiple distribution holes are opened on the top distribution pipe. The support frame is composed of an upper support leg (309) and a lower support leg (310) hinged to a rotating shaft (307).

2. The silo double-tube folding fabric distribution device as described in claim 1, characterized in that, A transverse connecting device (402) is provided between the central grain inlet pipe (3) and the supporting sleeve (4). The transverse connecting device (402) has a rod-shaped structure in the middle and arc surfaces at both ends, with through holes on the arc surfaces. Both ends of the transverse connecting device (402) are fixedly connected to the side wall of the central grain inlet pipe and the supporting sleeve by bolts.

3. The silo double-tube folding fabric distribution device as described in claim 1, characterized in that, The outer wall of the support sleeve (4) is provided with a limiting groove (403) corresponding to the folded fabric groove.

4. The silo double-tube folding fabric distribution device as described in claim 1, characterized in that, The end of the central grain inlet pipe is bent to one side to form the bottommost inlet feed pipe (313), which passes through the side wall of the support sleeve and is located inside the silo. Multiple feed pipes (304) are arranged around its pipe wall and pass through the side wall of the support sleeve and are located inside the silo. The bent part at the end of the central grain inlet pipe forms the bottom closed end.

5. The operating method of the silo double-tube folding fabric distribution device as described in claim 1, characterized in that, Includes the following steps: (1) Before the grain is put into the warehouse, close all valves except the central grain inlet valve and start the winch to unfold all the folded cloth troughs. (2) Grain is transported to the transfer grain warehouse and the central grain inlet pipe through the grain conveying pipe above the silo. When the grain in the central grain inlet pipe is half full, the valve at the bottom of the central grain inlet pipe is opened, and the grain enters the bottom of the silo through the bottom layer of the inlet feeding pipe and the distribution pipe. (3) When the grain height is about to reach the height of the feed pipe discharge port, the grain height in the central grain inlet pipe begins to rise. Open the discharge valve on the feed pipe in the fourth layer (second to last layer) of the silo. The grain enters the silo through the feed pipe, the folded feed trough and the feed pipe. When the grain height is close to the bottom discharge port of the fourth layer folded feed trough and the feed pipe, pull the traction rope through the winch at the top of the silo. The folded feed trough flips and retracts and is fixed by the limit slot. (4) When the grain height is about to reach the height of the feed pipe discharge port, the grain height in the central grain inlet pipe begins to rise; open the discharge valve on the feed pipe in the third layer (the third to last layer of the silo), and the grain enters the silo through the feed pipe, the folded feed trough and the feed pipe; when the grain height is close to the bottom discharge port of the third layer folded feed trough and the feed pipe, pull the traction rope through the winch at the top of the silo, the folded feed trough flips and retracts, and is fixed by the limit slot; (5) Follow the above operation method and continue in this way until the top layer of folded cloth trough and cloth pipe discharge port are filled with grain, then close the grain inlet valve. (6) Open the valve of the top feeding pipe. Grain enters the silo through the top feeding pipe. When the grain height in the silo reaches the specified feeding height, the feeding is stopped. By employing the above operational methods, it is ensured that the grain flows in a restricted manner during its flow through the central grain inlet pipe, preventing free flow and ensuring that the grain flows slowly downwards within the central grain inlet pipe to prevent grain breakage. At the same time, the grain is fed from the bottom of the silo and gradually spread upwards, reducing the occurrence of grain grading.

6. The operating method of the silo double-tube folding fabric distribution device as described in claim 5, characterized in that, By controlling the top feeding pipe valve, the grain inlet pipe valve, the discharge valve, and the folding feeding trough, the grain is kept in a restricted flow throughout the entire feeding process, preventing free flow.

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