Common pipeline system for ventilation and grain discharge of floor type squat silo

Abstract

A common pipeline system for ventilation and grain discharge of a floor type squat silo comprises a plurality of rectangular pipelines buried below the squat silo and a grain discharge conveyor capable of extending into and out of the rectangular pipelines, and the upper top walls of the rectangular pipelines are flush with the silo bottom of the squat silo. A plurality of ventilation holes communicated with the squat silo and a plurality of grain unloading funnels distributed in the length direction of the rectangular pipeline are formed in the upper top wall, valves are arranged below the grain unloading funnels, and the horizontal position of a grain inlet of the grain outlet conveyor is located below the horizontal position of the grain unloading funnels. And the delivery efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of grain storage of floor-standing shallow silos, in particular to a common pipeline system for ventilation and grain discharge of floor-standing shallow silos. Background Art

[0002] Shallow silos are the mainstream type of new grain warehouses. During the construction process, mechanical ventilation facilities are installed to enable the warehouse to have ventilation, cooling, precipitation and other functions to improve the safety of grain storage. In-and-out facilities are installed to ensure smooth in-and-out of grain. Ventilation and in-and-out functions are basic requirements for warehouse construction. The bottom of the shallow silo can be divided into floor-standing flat bottom structure, overhead type with large cone bucket, multiple cone bucket or flat bottom structure. At present, the floor-standing shallow silo has become the main type of warehouse construction in the grain storage industry with long-term storage business as its main business due to its low construction cost.

[0003] Due to different requirements for the rotation cycle of floor-standing shallow silos, different silo bottom structures are formed during the construction process: different types of air ducts are usually set up in the silo, and fans are used to ventilate the grain pile through the air ducts to achieve the purpose of lowering the grain temperature and balancing the temperature inside the grain pile, eliminating the hidden dangers inside the grain pile during the grain storage process, and ensuring the safety of grain storage; shallow silo groups are equipped with working towers or steel frames, and the grain is put into the silo through the coordination of vertical transportation in the tower and horizontal transportation on the silo roof; a grain unloading port is set on the floor of the floor-standing shallow silo, and a grain unloading corridor and a fixed transportation port are set under the floor. The grain unloading corridor can be used to unload grain quickly from the warehouse through the grain unloading port and fixed conveyor, but the construction cost of this type of warehouse is relatively high (the installation of a grain unloading corridor will increase the cost of a 10,000-ton capacity warehouse by 750,000 to 1,000,000 yuan per unit. If the warehouse bottom structure adopts an overhead design with a large cone bucket or multiple cone buckets, the cost of a 10,000-ton capacity warehouse will increase even more). For grain depots that have been mainly engaged in reserve business for a long time, the storage period of grain after entering the warehouse is generally 3-5 years. The design of a grain unloading corridor will not only increase the cost of warehouse construction, but also cause the conveying equipment to be idle for a long time, with low utilization rate and high maintenance cost.

[0004] In the prior art, when discharging grain from a floor-standing shallow circular silo without a grain unloading port, except for a portion of grain that flows out of the silo by itself through high-level and low-level distribution pipes, the remaining grain can only be discharged from the silo door. Although a large amount of silo construction costs are saved, the method of discharging grain from the silo door also has the disadvantages of slow discharge, high labor intensity, poor working environment, and high discharge costs. Summary of the invention

[0005] In order to solve the problems of high grain discharge cost, slow grain discharge and long time in the prior art for a floor-standing shallow circular silo without a grain unloading port, the present invention provides a shared pipeline system for ventilation and grain discharge of a floor-standing shallow circular silo, which reduces the discharge cost of the shallow circular silo and improves the discharge efficiency.

[0006] In order to achieve the above-mentioned purpose, the specific scheme adopted by the present invention is: a common pipeline system for ventilation and grain discharge of a ground-type shallow cylindrical silo, comprising a plurality of rectangular pipes arranged below the floor of the shallow cylindrical silo and a grain discharge conveyor capable of entering and exiting the rectangular pipes, the upper top wall of the rectangular pipes being flush with the floor of the shallow cylindrical silo, and the upper top wall being provided with a plurality of ventilation holes connected to the shallow cylindrical silo and a plurality of grain discharge funnels arranged along the length direction of the rectangular pipes, a valve being provided below the grain discharge funnel, and the horizontal position of the grain inlet of the grain discharge conveyor being located below the horizontal position of the grain discharge funnel.

[0007] As an optimization solution for the above-mentioned common pipe system for ventilation and grain discharge of ground-type shallow silos: one end of the rectangular pipe extends toward the center along the radius of the shallow silo to 0.4-0.6m from the center point of the silo.

[0008] As another optimization scheme of the above-mentioned common pipe system for ventilation and grain discharge of ground-type shallow silos: the other end of the rectangular pipe extends out of the shallow silo and extends outward to 1-2m beyond the outer wall of the shallow silo.

[0009] As another optimization solution of the above-mentioned common pipe system for ventilation and grain discharge of ground-type shallow silos: the diameter of the ventilation hole is 1-5 mm.

[0010] As another optimization scheme of the above-mentioned common pipeline system for ventilation and grain discharge of ground-type shallow silos: the grain discharge conveyor is an auger conveyor, a scraper conveyor, a belt conveyor or a hose auger conveyor, etc.

[0011] As another optimization scheme of the above-mentioned common pipeline system for ventilation and grain discharge of ground-standing shallow silos: the valve includes a grain discharge pipe connected to the grain unloading funnel, a sealing plate capable of cutting off the grain discharge pipe is rotatably provided at the bottom end of the grain discharge pipe, and a pneumatic push rod for driving the sealing plate to rotate is provided outside the grain discharge pipe.

[0012] As another optimization scheme of the above-mentioned common pipeline system for ventilation and grain discharge of ground-standing shallow silos: a hinge seat is fixedly connected to the sealing plate, the telescopic rod of the pneumatic push rod is rotatably connected to the hinge seat, and the base of the pneumatic push rod is rotatably connected to the outer wall of the grain discharge pipe.

[0013] As another optimization scheme of the above-mentioned common pipe system for ventilation and grain discharge of ground-type shallow silos: the outer side wall of the grain discharge pipe is fixedly connected with a support plate, and the base of the pneumatic push rod is rotatably connected to the support plate.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention provides a common pipeline system for ventilation and grain discharge of a floor-standing shallow silo. When the shallow silo stores grain, the shallow silo can be ventilated through the ventilation holes by using the air duct of the shallow silo and the rectangular pipeline. At this time, there is no grain discharge conveyor in the rectangular pipeline. When the shallow silo discharges grain, the grain discharge conveyor is moved into the rectangular pipeline, and the grain discharge conveyor with an open upper surface is located just below the grain unloading funnel. The valve is opened, and the grain dispersion characteristics are used to make the grain flow to the grain discharge conveyor under the action of gravity. Finally, the grain is loaded into a grain transport vehicle through the grain discharge port of the grain discharge conveyor outside the silo, and the grain discharge operation of the shallow silo is completed, thereby achieving the purpose of reducing the construction cost of the shallow silo and improving the grain discharge efficiency.

[0016] 2. In the present invention, several branch air ducts in the radial trough air duct are converted into common pipes for ventilation and warehouse discharge. The converted rectangular pipes are arranged under the floor of the shallow round warehouse and the upper top wall is flush with the floor of the warehouse, forming the biggest difference from the ground cage air duct: there are no obstacles on the floor of the warehouse, which is convenient for mechanical or manual methods to push the remaining grain into the grain unloading funnel, and the rectangular pipe does not affect the warehouse cleaning operation, thereby greatly improving the grain discharge efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The first embodiment is a schematic diagram of the distribution of air ducts and rectangular pipes in a shallow circular silo;

[0019] Figure 2 It is a partial enlarged schematic diagram of a grain unloading funnel on a rectangular pipe;

[0020] Figure 3 It is a schematic diagram of the structure of a non-discharging grain conveyor in a rectangular pipe;

[0021] Figure 4 It is a schematic diagram of the structure of the grain conveyor located in a rectangular pipe;

[0022] Figure 5 yes Figure 3 A partial enlarged schematic diagram of the valve structure.

[0023] Figure numerals: 1. shallow circular silo, 101. silo door, 2. rectangular pipe, 201. grain unloading funnel, 202. extension section, 203. extension section, 204. cover plate, 206. ventilation hole, 3. blocking plate, 301. driven gear, 302. pneumatic push rod, 4. grain outlet pipe, 5. grain outlet conveyor, 501. spiral blade, 502. grain outlet, 503. driving motor. DETAILED DESCRIPTION

[0025] The technical solution of the present invention is further elaborated in detail below in conjunction with specific embodiments. The parts that are not described and disclosed in detail in the following embodiments of the present invention should be understood as the prior art known or should be known to those skilled in the art, such as how the grain conveyor 5 enters and exits the rectangular pipe 2, the connection method of the support rod and the cover plate 204, etc.

[0026] Example 1

[0027] The shallow silo 1 is a circular silo and is provided with a silo door 101. During the construction of the floor-standing shallow silo 1, different types of air ducts are usually provided in the silo, and a fan is used to ventilate the grain pile through the air duct to achieve the purpose of lowering the grain temperature and balancing the internal temperature of the grain pile. The air ducts are arranged in radial, comb, ring, Gui or Feng shapes, etc., and the number of air ducts is 8-12. In this embodiment, the number of air ducts is 12 in total, and they are arranged in two groups of radial air ducts along the central axis of the shallow silo. A common pipe system for ventilation and grain discharge of a floor-standing shallow silo 1 includes a plurality of rectangular pipes 2 arranged under the floor of the shallow silo 1 and a grain discharge conveyor 5 capable of entering and exiting the rectangular pipes 2. One end of the rectangular pipes 2 extends toward the center along the radius direction of the shallow silo 1. The plurality of rectangular pipes 2 are evenly distributed along the circumference of the shallow silo 1. The number of rectangular pipes 2 is 2-8. In this embodiment, the number of rectangular pipes 2 is 4, and the 4 rectangular pipes 2 are obtained by improving the ground trough air duct. Specifically, one end of the pipe extends toward the center of the shallow silo 1 to form an extension section 203, and the other end of the air duct extends out of the wall of the shallow silo 1 to form an extension section 202. Finally, the pipe, the extension section 203 and the extension section 202 form the rectangular pipe 2 in this embodiment. In this embodiment, there are two branch air ducts between two adjacent rectangular pipes 2, so that the ventilation of the shallow silo 1 is more uniform. Changing the ground trough air duct into a rectangular pipe 2 does not require the construction of an additional rectangular pipe 2, thereby reducing the construction cost of the shallow silo 1. When the shallow circular silo 1 is used to store grain, there is no grain discharge conveyor 5 in the rectangular pipe 2, and the shallow circular silo 1 is ventilated through the rectangular pipe 2 and other air ducts; when the grain needs to be discharged from the silo, the grain discharge conveyor 5 moves into the rectangular pipe 2 to carry out the grain discharge operation.

[0028] The extension section 203 of the rectangular pipe 2 is 0.5m away from the center of the silo. The other end of the rectangular pipe 2 extends out of the outer wall of the shallow silo 1 to form an extension section 202, which is 1-2m away from the outer wall of the shallow silo 1. The end face of the extension end is provided with a sealing door that can be easily opened for the grain conveyor to enter and exit.

[0029] The upper top wall of the rectangular pipe 2 is flush with the floor of the shallow silo 1, and a plurality of ventilation holes 206 connected to the shallow silo 1 and a plurality of grain unloading funnels 201 distributed along the length direction of the rectangular pipe 2 are provided on the top wall. In this embodiment, the rectangular pipe 2 includes a "U"-shaped member opened upward under the floor, and a cover plate 204 is laid on the opening of the "U"-shaped member. The cover plate 204 is the upper top wall of the rectangular pipe 2 described above, and the ventilation holes 206 are opened on the cover plate 204 and are evenly distributed on the cover plate 204; and the grain unloading funnel 201 is also arranged on the upper top wall of the rectangular pipe, and the top surface of the grain unloading funnel 201 is flush with the upper top wall of the pipe and the upper surface of the cover plate 204, and the bottom end of the grain unloading funnel 201 extends into the rectangular pipe 2. When the grain is discharged from the warehouse, the grain discharge conveyor 5 moves into the rectangular pipe 2, and the grain in the shallow silo 1 flows into the grain discharge conveyor 5 through the grain discharge funnel 201, and is output to the outside of the shallow silo 1 through the grain discharge conveyor 5, and is lifted by other conveying equipment and loaded and transported away, so the grain discharge efficiency is high. At the same time, there are no obstacles on the floor of the warehouse, and the remaining grain can be conveniently pushed into the grain discharge funnel 201 by the warehouse cleaning machine, which further improves the grain discharge efficiency.

[0030] The number of the grain unloading funnels 201 on each rectangular pipe is 2-8, and the number of the grain unloading funnels 201 in this embodiment is 3.

[0031] The diameter of the ventilation hole 206 is 1-5 mm. In this embodiment, the diameter of the ventilation hole 206 is 3 mm.

[0032] The grain conveyor 5 is a screw conveyor, a scraper conveyor, a belt conveyor or a hose screw conveyor. In this embodiment, the grain conveyor 5 is a screw conveyor. Specifically, the grain conveyor 5 includes a shell, such as Figure 3 The shell is open at the top, and can be connected to the grain from multiple grain unloading funnels 201, and its position is located below the grain unloading funnel 201. When the grain unloading conveyor 5 moves into the rectangular pipe 2 to unload grain, the top of the auger is open and located directly below the grain unloading funnel 201, and the width of the auger shell is greater than the size of the bottom opening of the grain unloading funnel 201, so as to ensure that all the grain flowing down from the grain unloading funnel 201 can pass into the auger shell. The end of the auger shell in the warehouse extending into the shallow round warehouse 1 is a blocking end, and the end of the outer warehouse shell extending out of the shallow round warehouse 2 is provided with a grain outlet 502. A spiral blade 501 is provided in the shell, and a driving motor 503 for driving the spiral blade 501 to rotate is provided outside the shell. During the rotation of the spiral blade 503, the grain in the shell is driven to flow out from the grain outlet 502, and the grain is loaded and transported away after being lifted, completing the grain unloading operation, which not only improves the grain unloading efficiency, but also improves the mechanized operation degree of the unloading operation, and effectively reduces the labor intensity of unloading.

[0033] The above is a basic implementation of the present invention, which can be further improved, optimized and limited on the basis of the above, so as to obtain the following embodiments:

[0034] Example 2

[0035] This embodiment is an improved solution for a common pipeline system for ventilation and grain discharge of a floor-standing shallow silo 1 based on the embodiment 1. Its main structure is the same as that of the embodiment 1. The improvements are as follows: Figure 5 As shown, a valve capable of cutting off the opening of the grain discharge funnel 201 is provided below the grain discharge funnel 201. In this embodiment, the valve is a jaw valve, and the valve includes a grain discharge pipe 4 connected to the grain discharge funnel 201. The cross section of the grain discharge pipe 4 is a square, that is, the grain discharge pipe 4 is a square tubular structure. A blocking plate 3 capable of cutting off or opening the grain discharge pipe 4 is rotatably provided at the bottom end of the grain discharge pipe 4. In this embodiment, the bottom end of the grain discharge pipe 4 is an arc-shaped structure convex to the bottom thereof, and the blocking plate 3 includes two arc-shaped plates, each of which is connected to the grain discharge pipe 4 through a rotating shaft, and the axes of the two rotating shafts are parallel to each other and are connected through a gear assembly transmission, so that the two arc-shaped plates can move toward and relative to each other. When the grain discharge pipe 4 is blocked, the adjacent ends of the two arc-shaped plates collide and are spliced ​​into an arc-shaped blocking plate to prevent grain from flowing out; when discharging grain, the two arc-shaped plates move in opposite directions, that is, the adjacent ends of the two arc-shaped plates are separated, so that a grain discharge area for grain to flow out is formed between the two arc-shaped plates. For ease of understanding, the two arc plates are referred to as the first arc plate and the second arc plate, the two rotating shafts are referred to as the first rotating shaft and the second rotating shaft, and the gears are referred to as the driven gear and the passive gear.

[0036] The blocking plate also includes connecting plates located on both sides of the grain outlet pipe 4, and the connecting plates are fan-shaped structures. Specifically, the first arc plate is connected to the grain outlet pipe 4 through two first connecting plates, and the second arc plate is connected to the grain outlet pipe 4 through two second connecting plates. The grain outlet pipe 4 is rotatably connected to the first connecting plate through a first rotating shaft, and the grain outlet pipe is rotatably connected to the second connecting plate through a second rotating shaft. A driving gear is provided at the end of the first rotating shaft, and a driven gear 301 meshing with the driving gear is provided at the end of the second rotating shaft.

[0037] The first curved plate and the second curved plate are driven to rotate by the pneumatic push rod 302. Specifically, a hinge seat is fixedly connected to one curved plate. In this embodiment, the hinge seat is fixed to the first curved plate, the telescopic rod of the pneumatic push rod 302 is rotatably connected to the hinge seat, and the base of the pneumatic push rod 302 is rotatably connected to the outer wall of the grain outlet pipe 4. The outer wall of the grain outlet pipe 4 is fixedly connected to a support plate, and the base of the pneumatic push rod 302 is rotatably connected to the support plate. When discharging grain, the pneumatic push rod 302 pulls the first curved plate to rotate clockwise, driving the active gear to rotate clockwise, and then driving the driven gear 301 to rotate counterclockwise. Finally, the second curved plate rotates counterclockwise, that is, the first curved plate and the second curved plate rotate away from each other, so that the first curved plate and the second curved plate are separated, and grain is retained between the first curved plate and the second curved plate; when storing grain, the pneumatic push rod 302 pushes the first curved plate to rotate counterclockwise, driving the active gear to rotate counterclockwise, and then driving the driven gear 301 to rotate clockwise. Finally, the second curved plate rotates clockwise, so that the first curved plate and the second curved plate move until the ends of the first curved plate and the second curved plate collide, and splice to form a sealing plate to cut off the bottom opening of the grain outlet pipe 4.

[0038] Example 3

[0039] The present embodiment is an improved scheme of a common pipe system for ventilation and grain discharge of a ground-type shallow silo 1, which is made on the basis of the embodiment 1. Its main structure is the same as that of the embodiment 1, and the improvement lies in that: a ventilation hole 206 is opened on the upper top wall of the rectangular duct 2. In order to improve the ventilation effect of the rectangular duct 2, it is necessary to make the ventilation hole 206 as large as possible. Therefore, an anti-leakage net is laid on the upper wall of the rectangular duct 2 above the ventilation hole 206, which is not shown in the figure. The setting of the anti-leakage net prevents grain from leaking out of the ventilation hole 206 and can ensure that the grain can flow out smoothly from the grain unloading funnel 201. The setting of the anti-leakage net increases the application scope of the shallow silo 1 and can adapt to the ventilation of a variety of grains.

[0040] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A common pipe system for ventilation and grain discharge of floor-standing shallow silos, characterized by: The invention comprises a plurality of rectangular pipes (2) arranged below the floor of a shallow silo (1) and a grain discharge conveyor (5) capable of entering and exiting the rectangular pipes (2); the upper top wall of the rectangular pipes (2) is flush with the floor of the shallow silo (1), and a plurality of ventilation holes (206) connected to the shallow silo (1) are provided on the upper top wall; and a plurality of grain discharge funnels (201) are provided distributed along the length direction of the rectangular pipes (2); a valve is provided below the grain discharge funnel (201); and the horizontal position of the grain inlet of the grain discharge conveyor (5) is located below the horizontal position of the grain discharge funnel (201).

2. A common pipe system for ventilation and grain discharge of a floor-standing shallow silo as claimed in claim 1, characterized in that: One end of the rectangular pipe (2) extends toward the center along the radius direction of the shallow silo (1) to a distance of 0.4-0.6 m from the center of the shallow silo (1).

3. A common pipe system for ventilation and grain discharge of a floor-standing shallow silo as claimed in claim 2, characterized in that: The other end of the rectangular pipe (2) extends out of the shallow silo (1) and outwards to a point 1-2 m beyond the outer wall of the shallow silo (1).

4. A common pipe system for ventilation and grain discharge of a floor-standing shallow silo as claimed in claim 1, characterized in that: The diameter of the ventilation hole is 1-5 mm.

5. A common pipe system for ventilation and grain discharge of a floor-standing shallow silo as claimed in claim 1, characterized in that: The grain discharging conveyor (5) is an auger conveyor, a scraper conveyor, a belt conveyor or a hose auger conveyor.

6. A common pipe system for ventilation and grain discharge of a floor-standing shallow silo as claimed in claim 1, characterized in that: The valve comprises a grain outlet pipe (4) connected to a grain unloading hopper (201); a blocking plate (3) capable of cutting off the grain outlet pipe (4) is rotatably provided at the bottom end of the grain outlet pipe (4); and a pneumatic push rod (302) for driving the blocking plate (3) to rotate is provided outside the grain outlet pipe (4).

7. A common pipe system for ventilation and grain discharge of a floor-standing shallow silo as claimed in claim 6, characterized in that: The blocking plate (3) comprises an arc-shaped plate, each of which is connected to the grain outlet pipe (4) via a rotating shaft, the axes of the two rotating shafts are parallel to each other and are connected via a gear assembly, so that the two arc-shaped plates can move towards and relative to each other.

8. A common pipe system for ventilation and grain discharge of a floor-standing shallow silo as claimed in claim 7, characterized in that: A hinge seat is fixedly connected to an arc-shaped plate, a telescopic rod of the pneumatic push rod (302) is rotatably connected to the hinge seat, and a base of the pneumatic push rod (302) is rotatably connected to an outer wall of the grain outlet pipe (4).

9. A common pipe system for ventilation and grain discharge of a floor-standing shallow silo as claimed in claim 8, characterized in that: The outer side wall of the grain outlet pipe (4) is fixedly connected to a support plate, and the base of the pneumatic push rod (302) is rotatably connected to the support plate.

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