Airtight grain inlet for grain feeding at top of granary

Abstract

The airtight grain inlet comprises a lower grain inlet pipe, a grain inlet dustproof sleeve and an upper grain inlet pipe, the upper grain inlet pipe is located at the top of the lower grain inlet pipe, and the grain inlet dustproof sleeve can be connected to the outer portion of the upper grain inlet pipe in a sleeving mode in an up-down moving mode and used for connecting and disconnecting the upper grain inlet pipe and the lower grain inlet pipe in series. The two sides of the upper grain inlet pipe are arranged at the top of the lower grain inlet pipe in a supporting mode through support rods. Wherein the support rod on one side is rotationally connected with a sealing cover used for sealing the top of the lower grain inlet pipe through a rotating sleeve, the lower grain inlet pipe is provided with a hasp used for locking and connecting the sealing cover, and the bottom end of the lower grain inlet pipe is connected with a grain inlet of the granary. The airtight grain inlet for grain feeding of the granary top is simple in structure, convenient to install and apply and good in airtightness.

Description

Technical Field

[0001] The utility model relates to the technical field of storage construction, in particular to an airtight grain inlet for feeding grain from a warehouse top. Background Art

[0002] In my country, grain storage mainly includes flat warehouses, shallow round warehouses, vertical silos, steel silos, etc., which are used for long-term storage or turnover of grain. The storage time of grain is usually very long, which requires grain storage units to take some measures to avoid or reduce the occurrence of mildew and insects in grain. The main means used are to use highly toxic phosphine gas to carry out circulating fumigation operations and nitrogen filling and conditioning operations in the warehouse. When implementing these two operations, the air tightness of the grain warehouse is required to be high, and the entire grain warehouse must be sealed (no air leakage) and maintained for a period of time.

[0003] At present, most of the cylindrical silos, including shallow round silos and vertical silos, are equipped with electric gates and manual airtight gates on the grain inlet chute above the grain inlet: when feeding grain, the operator opens the electric gate in the main control room, and the grain transported by the conveyor enters the cylindrical silo smoothly. After the grain feeding work is completed, the electric gate is closed in the main control room. When the grain feeding work is completed, the grain inlet needs to be sealed well, which is the key work before the grain silo is disinfected. The quality of the seal is closely related to the disinfection effect. When the grain in the cylindrical silo enters normal storage or needs fumigation and controlled atmosphere disinfection, the grain inlet needs to be sealed well, that is, the eccentric cam on the manual airtight gate is manually pulled to press the gate plate down, so that the grain inlet of the cylindrical silo meets the airtight requirements. However, in actual operation, due to the poor structure of the manual airtight gate or poor product quality, closing the manual airtight gate often fails to meet the sealing requirements of the grain inlet, making it a headache for the sealing treatment of the grain inlet of the cylindrical silo. In order to solve the airtightness problem, people have designed a connection and sealing device for the grain inlet. Some connection and sealing devices for the grain inlet have also been reported in public literature, such as:

[0004] 1. Chinese Patent: A connection device for a grain inlet of a shallow silo, application number: 202020253668.8, application date: 2020.03.04, abstract: A connection device for a grain inlet of a shallow silo is disclosed, including a sealing cover and a telescopic chute arranged between a conveying device and an inlet chute interface, the telescopic chute includes a fixed tube and a movable tube, the movable tube can be slidably sleeved on the fixed tube, the outer walls of the movable tube and the fixed tube are respectively provided with a locking device and a fixing seat corresponding to the locking device, the sealing cover covers the inlet chute interface and the sealing cover has a conical structure with a larger diameter than the surrounding area at the center of the upper surface. The connection device has a simple structure, can be directly installed or disassembled by bolts, does not require cutting and hot work, is safe and reliable, and can be widely used in the grain inlet of the silo roof.

[0005] 2. Chinese Patent: A sealing device suitable for a grain inlet of a silo, application number: 202022683826.6, application date: 2020.11.19, abstract: A sealing device suitable for a grain inlet of a silo, comprising a grain inlet chute equipped with an electric gate and a straight cylindrical connecting pipe connected to the lower end of the grain inlet chute, characterized in that: the upper end of the straight cylindrical connecting pipe is combined with the lower end of the grain inlet chute through a connecting flange and a clamp for easy disassembly and assembly, the upper end of the straight cylindrical connecting pipe is combined with the lower end of the grain inlet chute through a connecting flange and a clamp for easy disassembly and assembly, the lower end of the straight cylindrical connecting pipe is connected to the grain inlet pipe pipe of the silo through a connecting flange, a silicone pad, and a clamp for easy disassembly and assembly; and an insulation blind plate for closing the grain outlet of the straight cylindrical connecting pipe is inserted at the connecting end of the straight cylindrical connecting pipe and the grain inlet pipe of the silo.

[0006] Through application research, it is found that the sealing cover of the connection device of the shallow round silo grain inlet disclosed in the above-mentioned document 1 is difficult to install and disassemble, and the grain discharged from the bottom of the telescopic chute fixed pipe is easy to impact the silo inlet chute interface; the blind plate installation structure of the sealing device for the cylindrical silo grain inlet disclosed in document 2 is complicated, and it is inconvenient to install and disassemble, and the capacity of the upper and lower connecting pipes is misaligned during installation, resulting in misalignment of the movable pipe. Therefore, it is necessary to redesign an airtight connection device. Summary of the invention

[0007] The utility model aims to provide an airtight grain inlet for feeding grain into a granary top. The airtight grain inlet for feeding grain into a granary top has a simple structure, is easy to install and use, and has good airtightness.

[0008] The utility model is realized by adopting the following technical solutions:

[0009] An airtight grain inlet for feeding grain at the top of a granary, comprising a lower grain inlet pipe, a grain inlet dustproof sleeve and an upper grain inlet pipe, wherein the upper grain inlet pipe is located at the top of the lower grain inlet pipe, the grain inlet dustproof sleeve is sleeved on the outside of the upper grain inlet pipe, and the grain inlet dustproof sleeve can move up and down on the outside of the upper grain inlet pipe, the upper grain inlet pipe and the lower grain inlet pipe are disconnected when moving up, and the upper grain inlet pipe and the lower grain inlet pipe are connected in series when moving down, and the grain inlet dustproof sleeve is connected and sealed with the upper port when it moves down to the upper port of the lower grain inlet pipe; both sides of the upper grain inlet pipe are supported and arranged on the top of the lower grain inlet pipe by support rods respectively, the support rods on both sides are vertically arranged, the top end of the upper grain inlet pipe is connected to other conveying equipment, and the incoming grain conveyed by the conveying equipment enters from the top end of the upper grain inlet pipe; The two ends of the frame rod are detachably connected to the support, and a mounting hole can be set on the support, the support rod is inserted into the mounting hole, and then a latch limiter is installed on the support rod. The support at the upper end is connected to the outer wall of the upper grain inlet pipe, and the support at the lower end is connected to the outer wall of the lower grain inlet pipe or connected to the top surface of the granary. A sealing cover for sealing the top of the lower grain inlet pipe is rotatably connected to the support rod on one side through a rotating sleeve. The sealing cover is fixedly connected to the rotating sleeve, and the rotating sleeve is rotatably connected to the support rod so that the sealing cover can rotate with the support rod as a rotating shaft. A buckle for locking the sealing cover is installed on the lower grain inlet pipe, and the movable buckle of the buckle is installed on the outer wall of the lower grain inlet pipe, and the fixed buckle of the buckle is set on the periphery of the sealing cover. After the dustproof sleeve is moved up, the top of the lower grain inlet pipe is closed by rotating the sealing cover, and the installed buckle is used to lock it to prevent air leakage, and the bottom end of the lower grain inlet pipe is connected to the grain inlet hole of the granary.

[0010] Further preferably, a support spring for supporting the rotating sleeve is installed on the support rod, and the sealing cover can be rotated relatively easily due to the support of the support spring.

[0011] Further preferred: the outer wall of the upper grain inlet pipe is provided with a hanging ear, and the outer wall of the grain inlet dustproof sleeve is provided with a hook for connecting with the hanging ear. When the upper grain inlet pipe and the lower grain inlet pipe do not need to be connected in series, that is, when grain does not need to be fed, the grain inlet dustproof sleeve is lifted up, and the hook is hung on the hanging ear to prevent the grain inlet dustproof sleeve from sliding down and interfering with the sealing cover, thereby affecting the sealing cover from sealing the top of the lower grain inlet pipe; when the upper grain inlet pipe and the lower grain inlet pipe need to be connected in series, that is, when grain needs to be fed, the buckle is released, the sealing cover is rotated away from the top of the lower grain inlet pipe with the support rod as a fulcrum, the hook is separated from the hanging ear, and the grain inlet dustproof sleeve is moved downward to connect the upper grain inlet pipe and the lower grain inlet pipe in series to prevent dust and grain from running out from between the upper grain inlet pipe and the lower grain inlet pipe when feeding grain.

[0012] Further preferably, the bottom end of the upper grain inlet pipe is provided with an inverted cone-shaped opening, the bottom diameter of the inverted cone-shaped opening is smaller than the inner diameter of the lower grain inlet pipe. The inverted cone-shaped opening plays a role in tightening the grain flow, so that all the grain falling from the upper grain inlet pipe enters the lower grain inlet pipe.

[0013] Further preferred: the mating surface between the sealing cover and the lower grain inlet pipe is provided with an annular groove, and the annular groove is filled with sealing rubber. When the sealing cover seals the top of the lower grain inlet pipe, after the buckle is locked, the top tube wall of the lower grain inlet pipe squeezes the sealing rubber in the annular groove.

[0014] Further preferably, the pipe wall of the airtight grain inlet in contact with the grain is coated with a wear-resistant coating to prevent the pipe wall from being worn.

[0015] The airtight grain inlet for feeding grain on the top of the granary has the following advantages:

[0016] 1. The airtight grain inlet for feeding grain from the top of the granary adopts a rotating sealing cover, combined with a buckle locking form, which can quickly open or close the top of the grain inlet pipe.

[0017] 2. An inverted cone-shaped opening is arranged at the bottom end of the upper grain inlet pipe, and the bottom diameter of the inverted cone-shaped opening is smaller than the inner diameter of the lower grain inlet pipe, which can reduce the impact on the lower grain inlet pipe when feeding grain.

[0018] 3. An annular groove is provided on the joint surface between the sealing cover and the lower grain inlet pipe, and the annular groove is filled with sealing rubber. When the sealing cover seals the top of the lower grain inlet pipe and the buckle is locked, the top tube wall of the lower grain inlet pipe squeezes the sealing rubber in the annular groove, which can improve the air tightness of the connection between the sealing cover and the lower grain inlet pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural schematic diagram of the sealing state of the airtight grain inlet for feeding grain on the top of the granary;

[0020] Figure 2 for Figure 1 Schematic diagram of top view;

[0021] Figure 3 This is a structural schematic diagram of the grain feeding state of the airtight grain inlet used for feeding grain on the top of the granary;

[0022] The names corresponding to the numbers in the figure are:

[0023] 1. Lower grain inlet pipe; 2. Support spring; 3. Rotating sleeve; 4. Sealing cover; 5. Support rod; 6. Grain inlet dustproof sleeve; 7. Hook; 8. Hanging ear; 9. Support; 10. Upper grain inlet pipe; 11. Inverted cone mouth; 12. Buckle; 13. Annular groove; 14. Sealing rubber. DETAILED DESCRIPTION

[0024] In order to describe the present technology more clearly, the present technology is further described in detail below with reference to the accompanying drawings and embodiments. Example 1

[0025] An airtight grain inlet for feeding grain on the top of a granary, comprising a lower grain inlet pipe 1, a grain inlet dustproof sleeve 6 and an upper grain inlet pipe 10, wherein the upper grain inlet pipe 10 is located at the top of the lower grain inlet pipe 1, and the grain inlet dustproof sleeve 6 can be movably sleeved on the outside of the upper grain inlet pipe 10 to connect and disconnect the upper grain inlet pipe 10 and the lower grain inlet pipe 1 in series; both sides of the upper grain inlet pipe 10 are supported by support rods 5 and arranged on the top of the lower grain inlet pipe 1; both ends of the support rod 5 are detachably connected to a support 9, a mounting hole is arranged on the support 9, and the support rod 5 is inserted into the mounting hole, and then the support rod 5 is inserted into the mounting hole. A latch limiter can be installed on the rod 5, the upper support 9 is connected to the outer wall of the upper grain inlet pipe 10, and the lower support 9 is connected to the outer wall of the lower grain inlet pipe 1 or the top surface of the granary; one side of the support rod 5 is rotatably connected with a sealing cover 4 for sealing the top of the lower grain inlet pipe 1 through a rotating sleeve 3, the sealing cover 4 is fixedly connected to the rotating sleeve 3, the rotating sleeve 3 is rotatably connected to the support rod 5, and a buckle 12 for locking the sealing cover 4 is installed on the lower grain inlet pipe 1, the movable buckle of the buckle 12 is installed on the outer wall of the lower grain inlet pipe 1, and the fixed buckle of the buckle 12 is arranged on the outer periphery of the sealing cover 4. When it is not necessary to connect the upper grain inlet pipe 10 and the lower grain inlet pipe 1 in series, that is, when grain is not needed, the grain inlet dustproof sleeve 6 is lifted up to prevent the grain inlet dustproof sleeve 6 from sliding down and interfering with the sealing cover 4, which affects the sealing of the top of the lower grain inlet pipe 1 by the sealing cover 4. At this time, the sealing cover 4 is rotated with the support rod 5 as a fulcrum to be located just above the top of the lower grain inlet pipe 1, and the sealing cover 4 and the lower grain inlet pipe 1 are locked by the buckle 12, and then the grain inlet dustproof sleeve 6 is loosened to allow it to slide freely and rest on the sealing cover 4. Cover the top of the cover 4; when it is necessary to connect the upper grain inlet pipe 10 and the lower grain inlet pipe 1 in series, that is, when grain needs to be fed, loosen the buckle 12, lift the grain inlet dustproof sleeve 6 upwards, rotate the sealing cover 4 with the bracket rod 5 as the fulcrum to leave the top of the lower grain inlet pipe 1, and lower the grain inlet dustproof sleeve 6 to connect the upper grain inlet pipe 10 and the lower grain inlet pipe 1 in series to prevent dust and grain from escaping from between the upper grain inlet pipe 10 and the lower grain inlet pipe 1 when feeding grain, and then feed grain from the top of the upper grain inlet pipe 10. Example 2

[0026] An airtight grain inlet for feeding grain on the top of a granary, comprising a lower grain inlet pipe 1, a grain inlet dustproof sleeve 6 and an upper grain inlet pipe 10, wherein the upper grain inlet pipe 10 is located at the top of the lower grain inlet pipe 1, and the grain inlet dustproof sleeve 6 can be movably sleeved on the outside of the upper grain inlet pipe 10 to connect and disconnect the upper grain inlet pipe 10 and the lower grain inlet pipe 1 in series; both sides of the upper grain inlet pipe 10 are supported by support rods 5 and arranged on the top of the lower grain inlet pipe 1; the two ends of the support rod 5 are respectively connected to the support 9 in a detachable manner, and the upper end The support 9 is connected to the outer wall of the upper grain inlet pipe 10, and the support 9 at the lower end is connected to the top surface of the granary; a sealing cover 4 for sealing the top of the lower grain inlet pipe 1 is rotatably connected to the support rod 5 on one side through a rotating sleeve 3, the sealing cover 4 is fixedly connected to the rotating sleeve 3, the rotating sleeve 3 is rotatably connected to the support rod 5, and a buckle 12 for locking the sealing cover 4 is installed on the lower grain inlet pipe 1, the movable buckle of the buckle 12 is installed on the outer wall of the lower grain inlet pipe 1, and the fixed buckle of the buckle 12 is set on the outer periphery of the sealing cover 4. The support rod 5 is installed with a support spring 2 for supporting the rotating sleeve 3.

[0027] The outer wall of the upper grain inlet pipe 10 is provided with a hanging ear 8, and the outer wall of the grain inlet dustproof sleeve 6 is provided with a hook 7 for connecting with the hanging ear 8. When it is not necessary to connect the upper grain inlet pipe 10 and the lower grain inlet pipe 1 in series, that is, when it is not necessary to feed grain, the grain inlet dustproof sleeve 6 is lifted up, and the hook 7 is hung on the hanging ear 8 to prevent the grain inlet dustproof sleeve 6 from sliding down and interfering with the sealing cover 4, which affects the sealing cover 4 from sealing the top of the lower grain inlet pipe 1; when it is necessary to connect the upper grain inlet pipe 10 and the lower grain inlet pipe 1 in series, that is, when it is necessary to feed grain, the buckle 12 is released, the sealing cover 4 is rotated away from the top of the lower grain inlet pipe 1 with the support rod 5 as a fulcrum, the hook 7 is separated from the hanging ear 8, and the grain inlet dustproof sleeve 6 is moved downward to connect the upper grain inlet pipe 10 and the lower grain inlet pipe 1 in series to prevent dust and grain from running out from between the upper grain inlet pipe 10 and the lower grain inlet pipe 1 when feeding grain, and grain can be fed from the top of the upper grain inlet pipe 10. Example 3

[0028] The difference from Example 1 or Example 2 is that the bottom end of the upper grain inlet pipe 10 is provided with an inverted cone-shaped opening 11 , and the bottom diameter of the inverted cone-shaped opening 11 is smaller than the inner diameter of the lower grain inlet pipe 1 .

[0029] The mating surface between the sealing cover 4 and the lower grain inlet pipe 1 is provided with an annular groove 13, and the annular groove 13 is filled with sealing rubber 14. When the sealing cover 4 seals the top of the lower grain inlet pipe 1, after the buckle 12 is locked, the top tube wall of the lower grain inlet pipe 1 squeezes the sealing rubber 14 in the annular groove 13.

[0030] The above description is not a limitation of the present application, and the present application is not limited to the above examples. Any changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present application should fall within the scope of protection of the present application.

Claims

1. An airtight grain inlet for feeding grain on the top of a grain silo, comprising a lower grain inlet pipe (1), a grain inlet dustproof sleeve (6) and an upper grain inlet pipe (10), wherein the upper grain inlet pipe (10) is located on the top of the lower grain inlet pipe (1), and the grain inlet dustproof sleeve (6) is movably sleeved on the outside of the upper grain inlet pipe (10) for connecting and disconnecting the upper grain inlet pipe (10) and the lower grain inlet pipe (1); characterized in that: The two sides of the upper grain inlet pipe (10) are supported and arranged on the top of the lower grain inlet pipe (1) respectively through support rods (5); a sealing cover (4) for sealing the top of the lower grain inlet pipe (1) is rotatably connected to the support rod (5) on one side through a rotating sleeve (3); a buckle (12) for locking and connecting the sealing cover (4) is installed on the lower grain inlet pipe (1); and the bottom end of the lower grain inlet pipe (1) is connected to the grain inlet hole of the granary.

2. The airtight grain inlet for feeding grain from the top of a granary according to claim 1, characterized in that: A support spring (2) for supporting the rotating sleeve (3) is installed on the support rod (5).

3. The airtight grain inlet for feeding grain from the top of a granary according to claim 1, characterized in that: The outer wall of the upper grain inlet pipe (10) is provided with a hanging ear (8), and the outer wall of the grain inlet dustproof sleeve (6) is provided with a hook (7) for connecting with the hanging ear (8).

4. The airtight grain inlet for feeding grain from the top of a granary according to claim 1, characterized in that: The bottom end of the upper grain inlet pipe (10) is provided with an inverted cone-shaped opening (11), and the bottom diameter of the inverted cone-shaped opening (11) is smaller than the inner diameter of the lower grain inlet pipe (1).

5. The airtight grain inlet for feeding grain from the top of a granary according to claim 1, characterized in that: An annular groove (13) is provided on the butt joint surface between the sealing cover (4) and the lower grain inlet pipe (1), and the annular groove (13) is filled with sealing rubber (14).

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