Double-pipe folding and distributing device for squat silo

Abstract

A squat silo double-pipe folding material distribution device comprises a silo, a transfer granary, a center grain inlet pipe, a supporting sleeve and a winch or a pneumatic hoist. A plurality of in-bin feeding pipes are connected to the side wall of the center grain inlet pipe in the vertical direction at intervals in a circumferential arrangement mode and communicated with the interior of the center grain inlet pipe, each in-bin feeding pipe is externally connected with a folding material distribution groove, and turnover valves synchronously rotating with the folding material distribution grooves are arranged in the in-bin feeding pipes. The winch or the pneumatic hoist drives the traction rope to further control the rotation angle of the turnover valve in the folding material distribution groove and the feeding pipe in the bin, and it is kept that in the whole grain feeding process, flowing of grains is limited, and free flowing is not generated. And meanwhile, grain feeding starts from the bottom of the silo and is gradually distributed upwards, the folding of the material distribution groove is beneficial to conveying the grain to the edge of the silo in a longer distance, the occurrence of the grain grading phenomenon is reduced, and automatic grading and crushing are avoided when the grain is fed into the grain silo disclosed by the utility model.

Description

Technical Field

[0001] The utility model relates to a double-tube folding material distribution device for a shallow round silo, belonging to the technical field of grain 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. 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 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 potential safety hazards, such as large dust in the warehouse, which belongs to the dust explosion danger zone. Therefore, the above technical problems still need to be solved. Utility Model Content

[0003] The utility model provides a double-tube folding material distribution device for a shallow silo and an operation method thereof, which aims to solve the technical problems of automatic grading and crushing of grains during the silo entry process.

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

[0005] A double-tube folding material distribution device for a shallow circular silo, comprising a silo, a transfer silo, a central grain inlet pipe, and a supporting sleeve; the transfer silo 2 is installed on the inner wall of the top of the silo and connected to the grain transport pipe outside the silo, multiple groups of top material distribution pipes 201 are distributed and installed on the side wall of the transfer silo, each of the top material distribution pipes is respectively provided with multiple material distribution holes, and the side wall of the supporting sleeve is provided with a support rod to support the top material distribution pipe; on the central grain inlet pipe 3, multiple layers of in-silo feeding pipes 301 connected in a circumferential distribution are arranged vertically and spaced apart, and are connected to the central grain inlet pipe; the in-silo feeding pipe 301 is arranged obliquely downward and passes through the side wall of the supporting sleeve 4; it is characterized in that:

[0006] Inside the transfer granary, the upper edge of the pipe opening where the top material distribution pipe is connected to the transfer granary is provided with a grain blocking plate 202 extending out of the pipe opening and hanging to block the pipe opening;

[0007] The lower end of the in-warehouse feeding pipe 301 is hingedly connected to the folding feeding trough 302. The folding feeding trough 302 is a U-shaped trough with a plurality of feeding holes 306 on the bottom and side surfaces. The side wall of the hinged end is provided with a connected rotating shaft frame 303 which vertically upwardly forms an L-shaped rotating arm of the trough body. The in-warehouse feeding pipe 301 is provided with a flip valve 305. The in-warehouse feeding pipe 301 is provided with a rotating shaft hole which is respectively connected to the upper end of the L-shaped rotating arm and fixed to the flip valve 305 in the in-warehouse feeding pipe through a rotating shaft 304. The rotating shaft, The L-shaped rotating arm rotates synchronously with the flip valve; a pulling rope 405 is set at the suspended end of the folding cloth trough, and the pulling ropes connected to each of the folding cloth troughs at the same horizontal height are connected to the same traction rope 503 or are connected to traction ropes respectively after passing through the pulley fixed on the supporting sleeve. The traction rope is pulled up and down by a winch or a pneumatic hoist 504 to control the expansion or closing of the folding cloth trough; the flip valve is opened when the folding cloth trough is expanded, and the flip valve is closed when the folding cloth trough is closed.

[0008] The double-tube folding material distribution device for a shallow silo, wherein a grain transport pipe 1 and a winch or pneumatic hoist 504 are provided on the top of the silo, and a transfer silo 2 connected to the grain transport pipe and a central grain inlet pipe 3 connected to the transfer silo are provided on the top of the silo;

[0009] A support sleeve 4 is vertically arranged 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 407 connected together. Flanges are arranged at the upper and lower ends of each sleeve unit, and they are connected as a whole through flanges. A bracket 307 is arranged above the flange corresponding to the folding feeding groove; a grain inlet hole 401 is opened on the side wall of each sleeve unit of the support sleeve and arranged in two rows 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;

[0010] The in-bin feeding pipe 301 is a square pipe or a round pipe.

[0011] The double-tube folding material distribution device for a shallow silo, wherein a plurality of winches or pneumatic hoists 504 are provided on the outer wall of the top of the silo 5, each winch is connected to a traction rope 503, and the lower end of each traction rope 503 is connected to a pulling rope connected to the folding material distribution trough of each feeding pipe in the silo at the same level;

[0012] The lower part of the traction rope is located in the support sleeve; a lifting rope hole is provided on the side wall of the support sleeve, and a pulley 502 is installed in the support sleeve corresponding to the lifting rope hole 406, and the lifting rope passes through the lifting rope hole and bypasses the pulley to connect with the traction rope in the support sleeve; the in-silo feeding pipe 301 passes through the side wall of the support sleeve 4 obliquely downward and is located in the silo;

[0013] The folding material distribution trough 302 is located outside the support sleeve and inside the silo;

[0014] A suspension rope 408 is provided on the side wall of the support sleeve and is connected to the folding cloth trough for auxiliary suspension;

[0015] The central grain inlet pipe 3 is vertically arranged in the supporting sleeve, and the central grain inlet pipe body extends downward to near the bottom of the silo. A conical grain distributor 310 is provided at the bottom of the central grain inlet pipe body and is supported and fixed at the bottom of the silo.

[0016] The double-tube folding material distribution device for a shallow silo, wherein the bracket 307 is hinged by an upper support leg 308 and a lower support leg 309 to form a triangular support; the outer end of the upper support leg 308 is connected to the side wall of the sleeve unit, and the outer end of the lower support leg 309 is connected above the flange, and the bracket 307 is supported on the bottom of the unfolded folding material distribution trough.

[0017] The double-tube folding material distribution device for a shallow silo is described, wherein a transverse connecting device 402 is arranged 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, and through holes are arranged on the arc surfaces, and both ends of the transverse connecting device 402 are fixedly connected to the central grain inlet pipe and the side wall of the supporting sleeve by bolts.

[0018] In the double-tube folding material distribution device for a shallow silo, a limiting groove 403 corresponding to the folding material distribution groove is provided on the outer wall of the supporting sleeve 4, and a return spring 404 is provided in the limiting groove.

[0019] A double-tube folding feeding device for a shallow circular silo, wherein the conical grain distributor 310 is a conical pointed top structure protruding upward at the inner center of the central grain inlet pipe, so that an annular pointed bottom is formed between the conical grain distributor and the bottom tube wall of the central grain inlet pipe; a plurality of distributor partitions with triangular tangential cross-sections that are narrow at the top and wide at the bottom are distributed and spaced along the circumference on the annular pointed bottom, dividing the annular pointed bottom area into a plurality of funnel-shaped discharge troughs 311 with pointed bottoms, and a discharge port 312 is correspondingly arranged at the bottom of the funnel-shaped discharge trough to connect to a short feeding pipe 313 for unloading.

[0020] The method for operating the double-tube folding material distribution device for a shallow silo comprises the following steps:

[0021] (1) Before the grain enters the warehouse, start the winch or pneumatic hoist to flip the folding feeding trough to a position where the angle between it and the upper part of the central grain inlet pipe is 0 degrees. At this time, the flip valve inside the feeding pipe in the warehouse is in a completely closed state;

[0022] (2) The grain conveying equipment is turned on, and the grain falls to the transfer grain silo through the grain conveying pipe. The grain blocking plate 202 blocks the grain from entering the top distribution pipe 201, and directly enters the central grain inlet pipe and falls to the conical grain distributor at the bottom, and then falls to the bottom of the silo through the short distribution pipe. When the grain at the bottom of the silo rises and blocks the mouth of the short distribution pipe, the grain continues to rise in the central grain inlet pipe.

[0023] (3) When the height of the grain in the central grain inlet pipe rises to two-thirds, the folding feeding trough at the bottom layer is completely lowered to a fully expanded state, and the flip valve inside the feeding pipe in the silo is flipped to an open state simultaneously. The grain in the central grain inlet pipe flows into the folding feeding trough through the feeding pipe in the silo, and finally falls into the silo. When the height of the grain in the silo is close to the bottom discharge port of the folding feeding trough at the bottom layer, the traction rope is pulled by a winch or pneumatic hoist, so that the folding feeding trough at the bottom layer is closed to a position where it is completely folded and nearly parallel to the side wall of the supporting casing; at this time, the flip valve inside the feeding pipe in the silo is in a fully closed state again;

[0024] (4) Similarly, the folding feeding troughs of each layer are repeated from bottom to top in the above operation of step (3), and the grain is filled into the silo from bottom to top until the folding feeding trough of the top layer is completely folded and folded. When the folding feeding trough of the top layer is completely folded, the height of the grain in the central grain inlet pipe gradually rises; when the grain in the central grain inlet pipe rises to the transfer silo and is piled up, the grain flows along the bottom of the grain retaining plate 202 into the top feeding pipe arranged on the side wall of the transfer silo and flows into the silo, completing the filling of the grain in the top area of ​​the silo, and the grain entry is completed.

[0025] The operating method of the double-tube folding feeding device of the shallow silo, wherein, through the above operating method, it is ensured that the grain flows in a restricted manner in the process of flowing in the central grain inlet pipe to prevent the grain from being broken. At the same time, the grain is fed from the bottom of the shallow silo and gradually spread upwards, reducing the occurrence of grain grading.

[0026] Beneficial effects of the utility model:

[0027] The utility model has a central grain inlet pipe connected to a multi-stage in-silo feeding pipe on the side, and each in-silo feeding pipe is connected to a folding feeding trough on the outside. The in-silo feeding pipe is provided with a flip valve that rotates synchronously with the folding feeding trough. The traction rope is driven by a winch to control the rotation angle of the folding feeding trough and the flip valve in the in-silo feeding pipe, so that the grain is restricted in flow and does not flow freely during the entire grain entry process. Grain entry starts from the bottom of the silo and is gradually spread upward. The folding feeding trough is conducive to transporting grain to the edge of the silo at a longer distance, reducing the occurrence of grain grading. At the same time, the utility model installs the folding feeding trough and the flip valve as an integrated linkage. By controlling the rotation angle of the folding feeding trough, the switch of the in-silo feeding pipe can be controlled. The number of valves required is reduced, the cost is reduced, and the installation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic elevation diagram of the overall structure of the bottom folding cloth trough of the utility model when it is unfolded to feed grain.

[0029] Figure 2 This is a schematic elevation view of the overall structure of the second-to-last folding feeding trough of the utility model when it is unfolded to feed grain.

[0030] Figure 3 This is a schematic elevation diagram of the overall structure of the folding distribution trough of the utility model when the grain is fed into the silo.

[0031] Figure 4 This is a top view of the utility model's transfer granary and top material distribution pipe.

[0032] Figure 5 This is a schematic cross-sectional view of the utility model of the transfer granary and the top material distribution pipe along the AA plane.

[0033] Figure 6 It is a top view schematic diagram of the central grain inlet pipe, the in-bin feeding pipe and the folding material distribution trough of each layer of the utility model.

[0034] Figure 7 It is a partial cross-sectional schematic diagram of the connection relationship between the feeding pipe and the folding material distribution trough in the warehouse of the utility model.

[0035] Figure 8 It is a side view schematic diagram of the connection relationship between the feeding pipe and the folding material feeding trough in the warehouse of the utility model.

[0036] Fig. 9 This is a schematic diagram of the main view of the folding cloth trough in the utility model.

[0037] Fig.10 It is a side view schematic diagram of the folding cloth trough in the utility model.

[0038] Fig.11 It is a top view schematic diagram of the limit slot in the utility model.

[0039] Fig.12 It is a side view schematic diagram of the limit slot in the utility model.

[0040] Fig.13 It is a schematic elevation view of the connection relationship between the lifting rope, the traction rope and the folding cloth trough in the utility model.

[0041] Fig.14 It is a side view schematic diagram of the connection relationship between a single pulling rope and a traction rope in the utility model.

[0042] Fig.15 This is a schematic diagram of the connection relationship of the casing units in the utility model.

[0043] Fig.16 It is a cross-sectional schematic diagram of the conical grain distributor in the utility model.

[0044] Fig.17 yes Fig.16 BB surface cross-sectional diagram,

[0045] Fig.18 It is a partial top view of the funnel-shaped feeding trough in the utility model.

[0046] Fig.19 yes Fig.18 Schematic diagram of the CC surface section expansion,

[0047] Fig. 20 It is a partial cross-sectional schematic diagram of the foldable material distributing trough of the utility model after being unfolded.

[0048] Description of the accompanying figures: Grain conveying pipe 1, transit grain silo 2, top feeding pipe 201, grain baffle 202, top feeding pipe opening 203, central grain inlet pipe 3, in-silo feeding pipe 301, folding feeding trough 302, rotating shaft frame 303, rotating shaft 304, flip valve 305, trough feeding hole 306, bracket 307, upper supporting leg 308, lower supporting leg 309, conical grain distributor 310, funnel-shaped feeding trough 311, discharge port 312, short feeding pipe 313, supporting sleeve 4, grain inlet hole 401, transverse connecting device 402, limit slot 403, reset spring 404, pulling rope 405, pulling rope hole 406, sleeve unit 407, suspension rope 408, silo 5, winch 501, pulley 502, traction rope 503, winch or pneumatic hoist 504. DETAILED DESCRIPTION

[0049] The specific structure and implementation methods of the utility model are described in detail below with reference to the accompanying drawings.

[0050] See also Figure 1 , 4As shown in Figure 5, a double-tube folding feeding device for a shallow circular silo of the utility model comprises a silo 5, a transfer silo 2, a central grain inlet pipe 3, and a supporting sleeve 4; a plurality of groups of top feeding pipes 201 are distributed and installed around the side wall of the transfer silo, each of which is provided with a plurality of feeding holes, and a supporting sleeve side wall is provided with a supporting rod to support the top feeding pipe; a plurality of in-silo feeding pipes 301 are arranged vertically and spaced in multiple layers and connected in a circumferential distribution on the central grain inlet pipe 3, and are connected to the central grain inlet pipe, see Figure 5. Figure 6 The figure shows a plurality of in-bin feeding pipes connected in a circumferential distribution at each layer, wherein the in-bin feeding pipes 301 are arranged obliquely downward and pass through the side wall of the support sleeve 4;

[0051] See also Figure 5 As shown, inside the transfer granary, the upper edge of the pipe opening where the top distribution pipe is connected to the transfer granary is provided with a grain blocking plate 202 extending out and suspended to block the pipe opening; its function is to prevent the falling grain from entering the top distribution pipe and directly enter the central grain inlet pipe 3.

[0052] The lower end of the feeding pipe 301 in the bin is hingedly connected to the folding feeding trough 302, see Fig. 9 , 10 As shown, the folding material distributing groove 302 is a U-shaped groove, and a plurality of groove distributing holes 306 are provided on the bottom and side surfaces of the groove, and a connecting shaft frame 303 is provided on the side wall of the hinged end thereof, which vertically upwardly forms an L-shaped rotating arm of the groove body, see Figure 7 As shown, a flip valve 305 is provided in the in-warehouse feeding pipe 301, and a rotating shaft hole is provided on the tube wall of the in-warehouse feeding pipe 301, which is respectively connected to the upper end of the L-shaped rotating arm through the rotating shaft 304, and is connected and fixed to the flip valve 305 in the in-warehouse feeding pipe. The rotating shaft, the L-shaped rotating arm and the flip valve rotate synchronously. More specifically, the rotating shaft 304 is rotatably connected to the rotating shaft holes on the tube walls on both sides and can rotate in the rotating shaft holes. The flip valve 305 adopts a circular plate structure that fits and rotates with the inner tube wall of the in-warehouse feeding pipe. The rotating shaft 304 is connected and fixed together on the central axis of the flip valve, and the two ends of the rotating shaft 304 are connected and fixed to the side walls of the L-shaped rotating arm, thereby forming a linkage between the rotating shaft, the L-shaped rotating arm and the flip valve; see Figure 7 and Figure 8 As shown in the figure, when the folding feeding trough is closed, the flip valve in the feeding pipe in the bin rotates synchronously with the folding feeding trough and is closed, and the feeding pipe in the bin no longer discharges grain. Fig. 20 As shown in the figure, when the folding feeding trough is unfolded, the flip valve in the feeding pipe in the bin is opened synchronously with the folding feeding trough, and the feeding pipe in the bin can continue to discharge grain; see Fig.13 and Fig.14As shown, a pulling rope 405 is provided at the suspended end of the folding material distribution trough. The pulling ropes connected to the respective folding material distribution troughs at the same horizontal height are connected to the same traction rope 503 or to different traction ropes after passing through the pulley fixed on the supporting sleeve. The traction rope is pulled up and down by a winch or a pneumatic hoist 504 to control the expansion or closure of the folding material distribution trough. When the folding material distribution trough is expanded, the flip valve is opened, and when the folding material distribution trough is closed, the flip valve is closed.

[0053] The double-tube folding material distribution device for a shallow silo, wherein a grain transport pipe 1 and a winch or pneumatic hoist 504 are provided on the top of the silo, and a transfer silo 2 connected to the grain transport pipe and a central grain inlet pipe 3 connected to the transfer silo are provided on the top of the silo;

[0054] A supporting sleeve 4 is vertically arranged in the middle of the silo, and its upper and lower ends are connected and fixed to the silo. Fig.15 As shown, the support sleeve 4 is composed of multiple sleeve units 407 connected together, each sleeve unit is provided with flanges at the upper and lower ends of the pipe opening, and is connected as a whole through the flanges, and a bracket 307 is provided above the flange corresponding to the folding cloth groove, see Fig. 20 As shown; the support sleeve is provided with grain inlet holes 401 on the side wall of each sleeve unit and arranged in two rows 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; the function of the grain inlet hole 401 is that when the grain filling amount in the silo exceeds the hole height, it can enter the support sleeve 4 for storage, and when it is lower than the hole height, it can flow out of the hole to the silo outside the support sleeve 4, so that it can enter and exit freely, and fully utilize the space to store grain;

[0055] The in-bin feeding pipe 301 is a square pipe or a round pipe.

[0056] The double-tube folding material distribution device for a shallow silo, wherein a plurality of winches or pneumatic hoists 504 are provided on the outer wall of the top of the silo 5, each winch is connected to a traction rope 503, and the lower end of each traction rope 503 is connected to a pulling rope connected to the folding material distribution trough of each feeding pipe in the silo at the same level;

[0057] The lower part of the traction rope is located in the support sleeve; a lifting rope hole is provided on the side wall of the support sleeve, and a pulley 502 is installed in the support sleeve corresponding to the lifting rope hole 406, and the lifting rope passes through the lifting rope hole and bypasses the pulley to connect with the traction rope in the support sleeve; the in-silo feeding pipe 301 passes through the side wall of the support sleeve 4 obliquely downward and is located in the silo; see Fig.13 , 14 As shown;

[0058] The folding material distribution trough 302 is located outside the support sleeve and inside the silo;

[0059] A suspension rope 408 is provided on the side wall of the support sleeve and is connected to the folding cloth trough for auxiliary suspension;

[0060] The central grain inlet pipe 3 is vertically arranged in the supporting sleeve, and the central grain inlet pipe body extends downward to near the bottom of the silo. A conical grain distributor 310 is provided at the bottom of the central grain inlet pipe body and is supported and fixed at the bottom of the silo.

[0061] The double-tube folding material distribution device for a shallow silo, wherein Figure 7 and Figure 8 As shown, the bracket 307 is hinged by an upper support leg 308 and a lower support leg 309 to form a triangular support; the outer end of the upper support leg 308 is connected to the side wall of the sleeve unit, and the outer end of the lower support leg 309 is connected above the flange, and the bracket 307 is supported on the bottom of the unfolded folding cloth trough.

[0062] The double-tube folding material distribution device for a shallow silo is described, wherein a transverse connecting device 402 is arranged 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, and through holes are arranged on the arc surfaces, and both ends of the transverse connecting device 402 are fixedly connected to the central grain inlet pipe and the side wall of the supporting sleeve by bolts.

[0063] The double-tube folding material distribution device for a shallow silo, wherein the outer wall of the support sleeve 4 is provided with a limit slot 403 corresponding to the folding material distribution slot, see Fig.11 , 12 As shown, a return spring 404 is disposed in the limit slot.

[0064] The double-tube folding material distribution device for a shallow silo, wherein Figure 16-19 As shown, the conical grain distributor 310 is a cylindrical structure with a conical pointed top protruding upward at the inner center of the central grain inlet pipe, and is inserted into the bottom inner support of the central grain inlet pipe, so that an annular pointed bottom is formed between the conical grain distributor and the bottom tube wall of the central grain inlet pipe; on the annular pointed bottom, a plurality of distributor partitions with triangular tangential cross-sections that are narrow at the top and wide at the bottom are distributed and spaced along the circumference, dividing the annular pointed bottom area into a plurality of funnel-shaped discharge troughs 311 with pointed bottoms, and a discharge port 312 is correspondingly arranged at the bottom of the funnel-shaped discharge trough to connect to a short distribution pipe 313 for unloading.

[0065] The method for operating the double-tube folding material distribution device for a shallow silo comprises the following steps:

[0066] (1) Before the grain enters the warehouse, start the winch or pneumatic hoist to flip the folding feeding trough to a position where the angle between it and the upper part of the central grain inlet pipe is 0 degrees. Figure 3 As shown, at this time, the flip valve inside the feeding pipe in the bin is in a completely closed state;

[0067] (2) The grain conveying equipment is turned on, and the grain falls to the transfer grain silo through the grain conveying pipe. The grain blocking plate 202 blocks the grain from entering the top distribution pipe 201, and directly enters the central grain inlet pipe and falls to the conical grain distributor at the bottom, and then falls to the bottom of the silo through the short distribution pipe. When the grain at the bottom of the silo rises and blocks the mouth of the short distribution pipe, the grain continues to rise in the central grain inlet pipe.

[0068] (3) When the grain height in the central grain pipe rises to two-thirds, Figure 1 As shown, the folding feeding trough at the bottom layer is completely lowered to a fully unfolded state, and the flip valve inside the feeding pipe in the silo is flipped to an open state synchronously, and the grain in the central grain inlet pipe flows into the folding feeding trough through the feeding pipe in the silo, and finally falls into the silo. When the height of the grain in the silo is close to the bottom discharge port of the folding feeding trough at the bottom layer, the traction rope is pulled by a winch or a pneumatic hoist, so that the folding feeding trough at the bottom layer is closed to a position where it is completely folded and nearly parallel to the side wall of the supporting sleeve; at this time, the flip valve inside the feeding pipe in the silo is in a fully closed state again;

[0069] By using a winch or pneumatic hoist to pull the traction rope, the penultimate layer of the folding feeding trough is lowered to a fully unfolded state. The flip valve inside the feeding pipe in the silo is flipped to an open state at the same time. The grain in the central grain inlet pipe flows into the folding feeding trough through the feeding pipe in the silo and finally falls into the silo. Figure 2 As shown, when the height of the grain in the silo is close to the bottom discharge port of the folding feeding trough of this layer, the traction rope is pulled by the winch or pneumatic hoist, so that the folding feeding trough of this layer is closed to a position where it is completely folded and nearly parallel to the side wall of the supporting sleeve; at this time, the flip valve inside the feeding pipe in the silo is in a completely closed state;

[0070] (4) Repeat the above operation of step (3) in each layer of folding feeding trough from bottom to top, and fill the silo with grain from bottom to top until the folding feeding trough on the top layer is completely folded and closed. Figure 3 As shown, when the top-level folding feeding trough is completely folded, the height of the grain in the center grain inlet pipe gradually increases; when the grain in the center grain inlet pipe rises to the transfer grain silo and is piled up, the grain flows along the bottom of the grain retaining plate 202 into the top feeding pipe arranged on the side wall of the transfer grain silo and flows into the silo, completing the filling of the grain in the top area of ​​the silo, and the grain entry is completed.

[0071] In the cavity between the support sleeve 4 and the central grain inlet pipe 3; through the grain inlet hole 401, when the grain filling amount in the silo exceeds the hole height, it can enter the support sleeve 4 for storage, and when it is lower than the hole height, it can flow out of the hole to the silo outside the support sleeve 4, so that it can enter and exit freely and make full use of the space to store grain.

[0072] The specific implementation methods of the utility model are further described in detail below:

[0073] See also Figure 1 Five winches 504 are provided on the top of the silo 5, each winch is provided with a traction rope 503, each traction rope 503 is respectively connected to a pulling rope that passes through the pulling rope hole 406 and enters the supporting sleeve, and the lower end of each pulling rope 405 is connected to a folding material distribution trough, and the traction rope driven by the winch further drives the folding material distribution trough 302 to realize the function of unfolding and folding the folding material distribution trough.

[0074] See also Figure 5 The side wall of the transfer granary 2 is connected with eight top distribution pipes 201 in a circumferential distribution, and each top distribution pipe is provided with a grain blocking plate 202 at the pipe opening to prevent the grain from directly falling to the bottom of the silo through the top distribution pipe after entering the transfer granary.

[0075] See also Figure 6-9 The inner wall of the lower pipe opening of the in-warehouse feeding pipe 301 is provided with a reversing valve 305, and the side wall of the folding material distribution trough 302 is provided with a rotating shaft frame 303. The in-warehouse feeding pipe 301 is connected to the folding material distribution trough 302 and the reversing valve 305 on the inner wall of the in-warehouse feeding pipe through a rotating shaft 304. The reversing valve and the folding material distribution trough can rotate synchronously. When the folding material distribution trough is completely folded, the reversing valve in the in-warehouse feeding pipe rotates synchronously, and the in-warehouse feeding pipe is closed and no grain is discharged. A bracket 307 is provided above the flange at the bottom of the support sleeve 4 to limit the expansion angle of the folding material distribution trough and provide support for it.

[0076] See also Figure 11-12 A return spring 404 is provided in the limit slot 403. When the folding cloth slot needs to be unfolded, the return spring is restored from the compressed state to the original state and pushes the folding cloth slot to unfold outward.

[0077] See also Figure 13-14 A pulley is provided on the inner wall of the supporting sleeve 4, and the pulley can reduce the friction force of the traction rope when it moves.

[0078] See also Fig.15 Each support sleeve unit is provided with a square grain inlet hole 401, so that grain can be stored between the support sleeve 4 and the central grain inlet pipe 3, thereby improving the utilization rate of the internal space of the silo.

[0079] The utility model discloses a double-tube folding material distribution device for a shallow round silo, which is composed of a silo, a winch or a pneumatic hoist, a supporting sleeve, a transfer silo, a central grain inlet pipe, a folding material distribution trough, a conical grain distributor and other devices.

[0080] A transfer granary is installed below the feed inlet at the top of the silo, and the volume of the transfer granary is 2-4 cubic meters.

[0081] The side wall of the transfer grain silo is equipped with top feeding pipes (or top feeding troughs) in a circumferential distribution. The number of top feeding pipes (or top feeding troughs) is 4-8, and the bottom of each pipe is provided with a feeding opening. The length of the top feeding pipe (or top feeding trough) is 3-8 meters. The diameter (or side length) of the top feeding pipe is 20-30 centimeters. Visual sensors, laser radars, millimeter wave radars, ultrasonic radars, etc. can be installed under the top feeding pipe (or top feeding trough) to detect the height of the grain surface.

[0082] A grain retaining plate is arranged at the pipe opening where the top material distributing pipe (or the top material distributing trough) is connected to the transfer grain bin.

[0083] The vertical discharge port of the transfer grain silo is connected and installed with a central grain inlet pipe vertical to the bottom of the silo. The diameter of the central grain inlet pipe is 40-90 cm. A conical grain distributor is installed on the inner wall of the bottom of the central grain inlet pipe, and its height is 1-3 meters. The conical grain distributor is a conical cylindrical structure with a bottom that is concave upward and protrudes at the center of the central grain inlet pipe, so that a ring-shaped pointed bottom is formed between the conical grain distributor and the bottom of the silo; multiple distributor partitions with a triangular tangential section that is narrow at the top and wide at the bottom are distributed and arranged at intervals on the annular pointed bottom, dividing the annular pointed bottom area into multiple funnel-shaped discharge troughs with pointed bottoms, and a discharge port is correspondingly arranged at the bottom of the funnel-shaped discharge trough to connect the short feeding pipe for unloading. The outside of the conical grain distributor is equipped with a non-metallic shock-absorbing pad. At the bottom of the conical grain distributor, 8-16 short feeding pipes in different directions are installed. The bottom of the central grain inlet pipe is fixedly installed on the inner wall of the bottom of the silo.

[0084] A metal support sleeve with a diameter of 100-200 cm is vertically installed outside the central grain inlet pipe. The support sleeve is composed of several sections of support sleeve units. Each section of the sleeve unit is provided with flanges at the upper and lower ends of the pipe openings, and is connected as a whole through flanges. The length of each support sleeve unit is 150 cm. A bracket corresponding to the folding cloth trough is provided on the bottom flange of each support sleeve unit, and the length of the bracket is 20-50 cm. The upper pipe opening of the support sleeve is fixedly installed on the inner wall of the bottom of the silo. The lower pipe opening of the support sleeve is fixedly installed on the top of the silo. There is a transverse fixed connection structure between the central grain inlet pipe and the support sleeve. The side wall of the support sleeve is provided with grain inlet holes along the axial direction at a certain interval.

[0085] Four metal feed pipes with a diameter of 20-40 cm are installed on the side wall of the central grain inlet pipe every 3-5 meters according to the circumference. The feed pipes pass through the side wall of the support sleeve. The angle between the feed pipes and the central grain inlet pipe is greater than 35 degrees.

[0086] The feeding pipe in the warehouse is connected to the flip valve and the folding feeding trough through the rotating shaft. A folding feeding trough is installed outside each feeding pipe in the warehouse. The folding feeding trough is a U-shaped trough made of metal. There are multiple feeding holes on the bottom of the trough. The side length is 10-30 cm and the length is 4-8 meters. A hanging rope is installed in the middle of the folding feeding trough. A pulling rope is installed at the end of the folding feeding trough.

[0087] A pulley is installed inside the support casing, and the traction rope passes over the pulley and is connected to the winch on the top of the silo. The pulley is used to redirect the lifting rope and prevent dry friction of the lifting rope.

[0088] A limiting slot for fixing the folding cloth slot is installed on the side wall of the supporting sleeve, and a return spring is arranged in the limiting slot.

[0089] Lifting ropes, suspension ropes and traction ropes can be made of steel wire ropes, composite steel belts, polyester ropes, polyethylene ropes, composite ropes and other materials.

[0090] The in-bin feeding pipe, short feeding pipe, folding feeding trough and top feeding pipe can be made of stainless steel or high-strength aluminum alloy.

[0091] Example

[0092] See also Figure 1 As shown, the technical solution of the utility model is specifically implemented in a silo with a diameter of 25 meters and a height of 29 meters from the ground to the cornice.

[0093] See also Figure 4 and Figure 5 As shown, a transfer granary is installed below the feed port at the top of the silo, and the volume of the transfer granary is preferably 3 cubic meters. Eight top distribution pipes with a length of 6 meters and a diameter of 20 centimeters are installed on the side wall of the transfer granary in a circumferential distribution, and the bottoms of the top distribution pipes are all provided with feed openings. A grain retaining plate is provided at the pipe opening where the top distribution pipe is connected to the transfer granary. A visual sensor is installed below the top distribution pipe to detect the height of the grain surface.

[0094] The vertical discharge port of the transfer grain silo is connected to a central grain inlet pipe with a diameter of 50 cm and a wall thickness of 5 mm, which is vertical to the bottom of the silo. The material of the central grain inlet pipe is preferably 325 stainless steel, and a conical grain distributor is installed on the inner wall at the bottom of the central grain inlet pipe, and its height is preferably 2 meters. Figure 16-Figure 19As shown, the conical grain distributor is a conical cylindrical structure protruding from the center of the central grain inlet pipe, so that an annular pointed bottom is formed between the conical grain distributor and the bottom of the silo; a plurality of distributor partitions with a triangular tangential cross-section that is narrow at the top and wide at the bottom are arranged at intervals along the circumference of the annular pointed bottom, dividing the annular pointed bottom area into a plurality of funnel-shaped feed troughs with pointed bottoms, and corresponding discharge ports are arranged at the bottom of the funnel-shaped feed troughs to connect short feeding pipes for unloading. The outside of the conical grain distributor is equipped with a non-metallic shock-absorbing pad. Eight short feeding pipes in different directions are installed at the bottom of the conical grain distributor. The bottom of the central grain inlet pipe is fixedly installed on the inner wall of the bottom of the silo. A tuning fork sensor that can detect the height of the grain surface is installed inside the central grain inlet pipe.

[0095] A circular support sleeve made of 325 stainless steel is installed vertically outside the central grain inlet pipe. The diameter of the circular support sleeve is about 150 cm and the wall thickness is about 5 mm. Figure 7 and Fig.15 As shown, the support sleeve is composed of several sections of support sleeve units. Each section of the sleeve unit is provided with flanges at the upper and lower ends of the pipe openings, and is connected as a whole through flanges. The length of each section of the support sleeve unit is about 150 cm. A bracket corresponding to the folding cloth trough is provided on the bottom flange of each section of the support sleeve unit, and the length of the bracket is about 40 cm. The upper pipe opening of the support sleeve is fixedly installed on the inner wall of the top of the silo. The lower pipe opening of the support sleeve is fixedly installed on the bottom of the silo. There is a transverse fixed connection structure between the central grain inlet pipe and the support sleeve. The side wall of the support sleeve is provided with several grain inlet holes along the axial direction at a certain interval.

[0096] Four metal feed pipes with a diameter of 30 cm are installed on the side wall of the central grain inlet pipe every 5 meters in a circumferential distribution. The feed pipes pass through the side wall of the support sleeve. The angle between the feed pipes and the central grain inlet pipe is greater than 35 degrees.

[0097] See also Figure 7 and Figure 8 As shown, the feed pipe in the warehouse is connected to the flip valve and the folding feeding trough through a rotating shaft, and a folding feeding trough is installed outside each feed pipe in the warehouse. The folding feeding trough is a U-shaped trough made of metal, and a plurality of feeding holes are opened on the bottom of the trough, with a side length of about 20 cm and a length of about 4 meters. A hanging rope is installed in the middle of the folding feeding trough. A lifting rope is installed at the end of the folding feeding trough.

[0098] See also Fig.13 and Fig.14 As shown, a pulley is installed inside the support sleeve, and the traction rope passes over the pulley and is connected to the winch on the top of the silo. The pulley is used to redirect the pulling rope and prevent the pulling rope from rubbing.

[0099] See also Fig.11As shown, a limiting slot for fixing the folding cloth slot is installed on the side wall of the supporting sleeve, and a return spring is arranged in the limiting slot.

[0100] Lifting ropes, suspension ropes and traction ropes are made of stainless steel wire ropes.

[0101] The feeding pipe in the warehouse, the short feeding pipe, the folding feeding trough and the top feeding pipe are made of 325 stainless steel.

Claims

1. A double-tube folding material distribution device for a shallow circular silo, comprising a silo, a transfer silo, a central grain inlet pipe, and a supporting sleeve; the transfer silo (2) is installed on the inner wall of the top of the silo and is connected to the grain transport pipe outside the silo; a plurality of groups of top material distribution pipes (201) are distributed and installed on the side wall of the transfer silo, each of which is provided with a plurality of material distribution holes; a support rod is provided on the side wall of the supporting sleeve to support the top material distribution pipe; a plurality of in-silo feeding pipes (301) are arranged vertically and spaced in multiple layers and connected in a circumferential distribution on the central grain inlet pipe (3), and are connected to the central grain inlet pipe; the in-silo feeding pipe (301) is arranged obliquely downward and passes through the side wall of the supporting sleeve (4); the characteristics are as follows: Inside the transfer grain bin, an upper edge of a pipe opening where the top material distribution pipe is connected to the transfer grain bin is provided with a grain blocking plate (202) extending out and hanging to block the pipe opening; The lower end of the in-warehouse feeding pipe (301) is hingedly connected to the folding material distributing trough (302). The folding material distributing trough (302) is a U-shaped trough, and a plurality of trough distributing holes (306) are provided on the bottom surface and the side surface of the trough. The side wall of the hinged end is provided with a connected rotating shaft frame (303) vertically upward to form an L-shaped rotating arm of the trough body. The in-warehouse feeding pipe (301) is provided with a turnover valve (305). The in-warehouse feeding pipe (301) is provided with a rotating shaft hole, which is respectively connected to the upper end of the L-shaped rotating arm and the turnover valve (305) in the in-warehouse feeding pipe through a rotating shaft (304). The rotating shaft, the L-shaped rotating arm and the flip valve rotate synchronously; a pulling rope (405) is provided at the suspended end of the folding material distribution trough, and the pulling ropes connected to the folding material distribution troughs at the same horizontal height are connected to the same traction rope (503) or are connected to traction ropes respectively after passing through the pulleys fixed on the supporting sleeve. The traction rope is pulled up and down by a winch or a pneumatic hoist (504) to control the expansion or closure of the folding material distribution trough; the flip valve is opened when the folding material distribution trough is expanded, and the flip valve is closed when the folding material distribution trough is closed.

2. A double-tube folding material distribution device for a shallow silo as claimed in claim 1, characterized in that: A grain transport pipe (1) and a winch or a pneumatic hoist (504) are provided on 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 on the top inside the silo; A supporting sleeve (4) is vertically arranged in the middle of the silo, and its upper and lower ends are connected and fixed to the silo. The supporting sleeve (4) is composed of a plurality of sleeve units (407) connected together. Each sleeve unit is provided with flanges at its upper and lower ends, and is connected as a whole through the flanges. A bracket (307) is provided above the flange corresponding to the folding material distribution groove. The supporting sleeve is provided with grain inlet holes (401) on the side wall of each sleeve unit, and is arranged in two rows along the axial direction. The supporting sleeve (4) is sleeved on the outside of the transfer grain silo (2) and the central grain inlet pipe (3). The in-bin feeding pipe (301) is a square pipe or a round pipe.

3. A double-tube folding material distribution device for a shallow silo as claimed in claim 1, characterized in that: A plurality of winches or pneumatic hoists (504) are provided on the outer wall of the top of the silo (5), each winch is connected to a traction rope (503), and the lower end of each traction rope (503) is connected to a pulling rope connected to the folding material feeding trough of each feeding pipe in the silo at the same level; The lower part of the traction rope is located in the support sleeve; a pulling rope hole is provided on the side wall of the support sleeve, and a pulley (502) is installed in the support sleeve corresponding to the pulling rope hole (406), and the pulling rope passes through the pulling rope hole and around the pulley to be connected with the traction rope in the support sleeve; the in-silo feeding pipe (301) passes through the side wall of the support sleeve (4) obliquely downward and is located in the silo; The folding material distribution trough (302) is located outside the supporting sleeve and inside the silo; A hanging rope (408) is provided on the side wall of the supporting sleeve and is connected to the folding cloth trough for auxiliary hanging; The central grain inlet pipe (3) is vertically arranged in the supporting sleeve, and the central grain inlet pipe body extends downward to near the bottom of the silo. A conical grain distributor (310) is provided at the bottom of the central grain inlet pipe body and is supported and fixed at the bottom of the silo.

4. A double-tube folding material distribution device for a shallow silo as claimed in claim 2, characterized in that: The bracket (307) is hingedly connected by an upper supporting leg (308) and a lower supporting leg (309) to form a triangular support; the outer end of the upper supporting leg (308) is connected to the side wall of the sleeve unit, and the outer end of the lower supporting leg (309) is connected above the flange, and the bracket (307) is supported on the bottom of the unfolded folding cloth trough.

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

6. A double-tube folding material distribution device for a shallow silo as claimed in claim 2, characterized in that: A limiting slot (403) corresponding to the folding material distribution slot is provided on the outer wall of the supporting sleeve (4), and a return spring (404) is arranged in the limiting slot.

7. A double-tube folding material distribution device for a shallow silo as claimed in claim 3, characterized in that: The conical grain distributor (310) is a conical pointed top structure protruding upward from the center of the inner circle of the central grain inlet pipe, so that an annular pointed bottom is formed between the conical grain distributor and the bottom tube wall of the central grain inlet pipe; a plurality of distributor partitions with triangular tangential cross-sections that are narrow at the top and wide at the bottom are arranged at intervals along the circumference of the annular pointed bottom, dividing the annular pointed bottom area into a plurality of funnel-shaped discharge troughs (311) with pointed bottoms, and a discharge port (312) is correspondingly arranged at the bottom of the funnel-shaped discharge trough to connect to a short distribution pipe (313) for unloading.

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