CN211378865U

CN211378865U - Circulating system for squat silo

Info

Publication number: CN211378865U
Application number: CN201922281721.5U
Authority: CN
Inventors: 吴元沃; 李少伟; 王晖; 陈先明
Original assignee: Central Grain Reserve Putian Warehouse Co ltd
Current assignee: Central Grain Reserve Putian Warehouse Co ltd
Priority date: 2019-12-18
Filing date: 2019-12-18
Publication date: 2020-09-01
Anticipated expiration: 2029-12-18

Abstract

The utility model discloses a circulation system for squat silo, including setting up in the outside fan of the storehouse body, first tuber pipe, second tuber pipe and third tuber pipe to and set up in the interior circulation pipe at internal top of storehouse, first tuber pipe and second tuber pipe set up and one end is passed storehouse body top outer wall and is stretched into storehouse internal portion along the direction of height of the storehouse body, and the other end passes through third tuber pipe interconnect, and wherein the one end that first tuber pipe stretched into storehouse internal portion is connected with interior circulation pipe. By utilizing the circulation system, the nitrogen charging system, the temperature control and the bin wall accumulated heat discharging circulation ventilation system are comprehensively utilized to discharge accumulated heat around the bin wall, so that the effects of keeping the nitrogen concentration in the bin and reducing the temperature and humidity are achieved.

Description

Circulating system for squat silo

Technical Field

The utility model relates to a granary ventilation field to in particular to a circulation system for squat silo.

Background

Novel sit ground formula squat silo wall body and adopt reinforced concrete synovial membrane to irritate the casting structure, and thermal-insulated cold insulation effect is general. In the southern high-temperature and high-humidity climate, the maximum temperature in summer reaches 35-38 ℃, the duration of the high temperature and the high humidity is long, the temperature gradually decreases in the middle and the last ten days of the 10 months, and the temperature of the grain is easily influenced by the external high-temperature and high-humidity climate to increase. Particularly, the temperature of the grains at the position of 0.30-0.80 m around the bin wall is influenced by external temperature, the temperature of the grains can reach 29-34 ℃, insects and mildews are easy to grow, and the grains are easy to dewing, mildewing, wall hanging and the like due to overlarge temperature difference. Hidden dangers can be partially eliminated through air conditioning, a heat accumulation discharging system around the cabin wall, manual turning and the like. The problem that the stored grain insect pest is generated and developed to a certain degree can only be solved by circulating fumigation without adopting a nitrogen gas-regulating insect-preventing and insect-killing technology.

With the gradual improvement of storage facilities, the sequential application of some new grain storage technologies in the squat silo achieves good results, but some technologies cannot be used simultaneously in the using process and cannot achieve the expected effect. If the air-conditioning temperature control technology is used in combination with the bin wall heat accumulation annular ventilation system, a good grain storage result can be obtained. With the application of nitrogen-filled and air-conditioned green grain storage technology, grain stacks are in a closed state during summer, the traditional method of removing accumulated heat by turning the periphery of a bin wall or mechanical ventilation cannot be applied, the accumulated heat on the periphery of the bin wall cannot be removed, and a series of hidden grain storage troubles are generated. In the period of filling nitrogen and summer, although the temperature control technology of an air conditioner can be utilized, the annular ventilation system for discharging heat accumulated on the bin wall cannot be used, so that the heat accumulated on the periphery of the bin wall cannot be discharged in time in the period of filling nitrogen in summer, particularly, peculiar smell exists on the periphery of corn grain storage, serious points are generated, the upper layer of the grain pile generates heat, and the maximum grain temperature reaches more than 30 ℃, which is not beneficial to the safe storage of the grain.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that exists among the prior art, the utility model provides a circulation system for squat silo has solved among the prior art problem that grain pile upper strata generates heat, the long-pending heat of bulkhead can't in time be discharged.

According to the utility model discloses a circulation system for squat silo, including setting up in the fan of the external portion of storehouse, first tuber pipe, second tuber pipe and third tuber pipe to and set up in the inner loop pipe at storehouse internal top, first tuber pipe and second tuber pipe are passed storehouse body top outer wall along the direction of height setting and the one end of the storehouse body and are stretched into the internal portion of storehouse, and the other end passes through third tuber pipe interconnect, and wherein first tuber pipe stretches into the one end and the inner loop pipe of the internal portion of storehouse and is connected. The first air pipe, the second air pipe, the third air pipe and the inner circulating pipe arranged at the top in the bin body form an air circulating channel from the inside of the bin to the outside of the bin, so that the air flow on the upper surface of the grain pile is promoted, and the heat accumulation on the upper layer of the grain pile is effectively reduced.

Preferably, the first air pipe is used for exhausting air, the second air pipe is used for air intake, and the first air pipe and the second air pipe are arranged at one end point of two quarters of the circumferential outer wall of the cabin body. By means of the arrangement, most space of the bin body can be covered, and the heat accumulation effect is improved.

Preferably, the joints of the first air pipe, the second air pipe and the third air pipe are respectively provided with a first fan and a second fan. The two fans can further increase the effect of circulation, and can be used for other purposes such as nitrogen filling, air exhaust and the like.

Preferably, the tail end of the second air pipe outside the cabin body is provided with a three-way joint, and the three-way joint is respectively used for connecting the third air pipe and an external nitrogen pipeline and is respectively provided with two valves. The valve setting can be used to control either the circulation mode or the nitrogen dosing mode.

Preferably, the inner circulating pipe is a semi-annular air pipe arranged along the side wall of the top in the bin body, the two ends of the semi-annular air pipe are sealed, and a plurality of three-way connectors are arranged at intervals in the middle of the semi-annular air pipe. By means of the semi-annular air pipe, the damp and hot air in a certain distance range of the bin wall can be discharged.

Preferably, a plurality of air outlet pipes are arranged on the inner circulating pipe at intervals, the air outlet pipes are connected with the three-way connector, and the air outlet pipes are arranged towards the bottom of the bin body. The air outlet pipe can be inserted into the grain pile, so that the heat at the top of the grain pile is effectively taken away.

Preferably, the pipe wall of the air outlet pipe is provided with a plurality of air outlet holes at intervals. The plurality of air outlet holes can prevent the condition of poor air circulation caused by the blockage of the air outlet holes.

Preferably, the top in the bin body is also provided with refrigeration equipment. By means of the arrangement of the refrigeration equipment, the temperature in the granary can be further reduced.

Preferably, the first air pipe, the second air pipe and the third air pipe are sleeved with heat-insulating materials on one section of the outer part of the bin body. By means of the arrangement of the heat-insulating material, the air pipe outside the bin body can be prevented from being influenced by the external temperature to cause the rise of the air temperature in the air pipe.

Preferably, two groups of circulation systems are arranged on the squat silo, wherein air pipes outside the silo body are respectively arranged at one end of four quarters of the circumference of the silo body. By means of the arrangement of the two groups of circulation systems, the effects of temperature reduction and humidity reduction can be further improved.

The utility model discloses a circulation system for squat silo, the circulation pipeline gas outlet that will install intelligent nitrogen filling control is connected with circulation pipeline gas outlet on, constitute two sets of closed circulation systems, circulation pipeline to part keeps warm thermal-insulated processing, utilize circulation fan to accelerate the air current and flow, 0.30m ~ 0.80m all around apart from the bulkhead and carry out the hot annular ventilation system of storehouse wall row through the storehouse wall in the range of 0.30m ~ 1.00m apart from grain surface moist heat gas, send into the storehouse inner space through another circulation system pipeline simultaneously, gas after the air conditioner cooling is fallen damp gets into storehouse wall row long-pending hot annular ventilation system through the grain surface again, form closed circulation, can keep nitrogen concentration can reach the mesh that the cooling is fallen damp again.

Drawings

The accompanying drawings are included to provide a further understanding of the embodiments and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments and together with the description serve to explain the principles of the invention. Other embodiments and many of the intended advantages of embodiments will be readily appreciated as they become better understood by reference to the following detailed description. The elements of the drawings are not necessarily to scale relative to each other. Like reference numerals designate corresponding similar parts.

Fig. 1 is a schematic structural view of a circulation system for a squat silo according to an embodiment of the invention;

fig. 2 is an expanded view of a nitrogen circulation duct external to the cartridge body in accordance with a particular embodiment of the present invention;

fig. 3 is a schematic view of the circulation direction of a squat silo circulation system according to one embodiment of the invention.

Detailed Description

In the following detailed description, reference is made to the accompanying drawings, which form a part hereof, and in which is shown by way of illustration specific embodiments in which the invention may be practiced. In this regard, directional terminology, such as "top," "bottom," "left," "right," "up," "down," etc., is used with reference to the orientation of the figures being described. Because components of embodiments can be positioned in a number of different orientations, the directional terminology is used for purposes of illustration and is in no way limiting. It is to be understood that other embodiments may be utilized and logical changes may be made without departing from the scope of the present invention. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present invention is defined by the appended claims.

Fig. 1 shows a schematic structural view of a circulation system for a squat silo according to an embodiment of the present invention. As shown in fig. 1, the circulation system comprises a first air duct 1, a second air duct 2, a third air duct 3, a first fan 6, a second fan 7, and an inner circulation duct 4, which are arranged outside the silo body. First tuber pipe 1 and second tuber pipe 2 perpendicular to ground and parallel arrangement are on the lateral wall of storehouse body outside, first tuber pipe 1 and second tuber pipe 2 set up respectively at two quarter extreme points of storehouse body circumferencial direction, the one end that is close to ground is connected with first fan 6 and second fan 7 respectively, and interconnect through third tuber pipe 3, the bulkhead that the other end passed storehouse body top stretches into the inside in the storehouse body, wherein, first tuber pipe 1 stretches into the one end in storehouse body inside and sets up the interior loop current pipe 4 intercommunication that is close to the top in storehouse body inside, the one end that second tuber pipe 2 stretches into the inside in storehouse body is the air inlet, can be used for to the internal transport nitrogen gas in storehouse, perhaps regard as circulation system's inlet end.

In a specific embodiment, the inner circulating pipe 4 is a semicircular pipe with two closed ends, the inner circulating pipe 4 is arranged along the side wall of the top of the granary body, a plurality of tee joints are arranged on the inner circulating pipe 4, one tee joint faces the top end of the granary and is used for being connected with one end, extending into the internal part of the granary, of the first air pipe 1, the rest tee joints face the bottom end of the granary and are evenly arranged at intervals and are used for being connected with the air outlet pipe 5, a plurality of air outlet holes are formed in the pipe wall of the air outlet pipe 5, and the air outlet pipe 5 is inserted into the granary and.

In a preferred embodiment, the first air duct 1, the second air duct 2 and the inner circulating pipe 4 are made of stainless steel pipes with the diameter of 100, the air outlet pipe 5 is made of stainless steel pipes with the diameter of 50, the flanges are made of DN100 or DN50 which are matched with each other, and the flanges can be connected by other modes such as welding and the like, and the air ducts made of the materials and the sizes can reduce the weight of the system and the cost. It should be realized that, in addition to the stainless steel pipe of the above diameter and material, the air pipe of other sizes or materials can be selected, for example, seamless steel pipe etc. can select the air pipe of suitable size according to the requirement of actual granary size and circulation, can realize the technical effect of the utility model equally.

In a specific embodiment, the first air pipe 1, the second air pipe 2 and the third air pipe 3 are connected by flanges, so that the circulating fumigation system can be conveniently disassembled and assembled by virtue of the connection of the flanges, and the pipeline can be sealed by virtue of sealing devices such as sealing rings in the flanges. Alternatively, the connection mode can also be other modes except that the ring flange is connected, for example mode such as clamp, welding are connected, can realize equally the utility model discloses a technological effect.

In a preferred embodiment, the partial surfaces of the first air duct 1, the second air duct 2 and the third air duct 3 outside the granary can be covered with heat-insulating materials, so that the influence of external high temperature on the air temperature in the pipelines can be further avoided, and the temperature rise in the granary caused by the temperature rise of air flow in the pipelines due to external high temperature is avoided.

In a preferred embodiment, the first fan 6 and the second fan 7 are circulating fans, and specifically, the circulating fans may be 0.75KW circulating fans, and the selection of power may be a fan with a suitable power according to a practical application scenario. Through the setting of the fan, the air flow speed in the circulation system can be improved, and the cooling and dehumidifying effects are further improved.

In a preferred embodiment, a plurality of cooling devices, such as air conditioners, can be disposed at the top end of the interior of the bin body in the vicinity of the air outlet of the second air duct 2 for further reducing the temperature and humidity within the bin. Through a plurality of tests of the applicant, through the operation of the circulation system, compared with the obvious reduction of the surface layer grain temperature before circulation, the reduction amplitude of 2-3 ℃ can be realized, and the deterioration speed of the surface layer food of the grain pile is effectively delayed.

Although only one set of circulation system is shown in the figure, it should be appreciated that 2 or more than 2 sets of circulation systems may be provided, specifically, the circulation systems are provided according to the size of the granary, for example, when 2 sets of circulation systems are designed, air pipes are provided at one end of four quarters of the circumferential direction of the granary body, and two sets of circulation systems as described above are provided, so that the circulation effect in the granary body can be further improved, the accumulated heat of the grain stored at the top of the granary body can be taken away more quickly, and adverse conditions such as moisture regain of the stored grain can be effectively prevented.

In the preferred embodiment, during the period of circulating ventilation heat accumulation, the grain temperature around the wall of the silo cannot be tracked in real time due to the nitrogen-filled closed time, and the grain temperature change cannot be mastered in the first time. Temperature measuring cables can be arranged at the position of 0.30-0.70 m around the bin wall and are in butt joint with the grain condition measurement and control system, and meanwhile, the influence of the bin wall heat circulation ventilation system on grain storage during nitrogen gas regulation can be continuously and deeply explored.

With continued reference to fig. 2, fig. 2 shows an expanded view of the nitrogen circulation ducts external to the cartridge body of an embodiment of the present invention. As shown in fig. 2, the third air duct 3 is circumferentially disposed on a side wall outside the cabin body and fixed by a plurality of brackets 8 disposed on side arms outside the cabin body, the brackets 8 are angle steel for supporting the third air duct 3, and the bottom end of the second air duct 2 is provided with at least one three-way joint for connecting the second air duct 2 and the nitrogen duct 9, and the joint is provided with a valve for switching between a nitrogen charging mode and a circulation mode. Still be provided with motor control box 10 and the nitrogen gas control box 11 that advances that is used for controlling nitrogen gas circulating motor 9, wherein nitrogen gas circulating motor control box 11 is the control box of taking time switch, specifically can carry out the management and control through PLC.

In a specific embodiment, the third air duct 3 is made of a stainless steel tube with a diameter of 100, and is connected with the first air duct 1 and the second air duct 2 by using a flange, welding and other methods. It should be realized that, in addition to the stainless steel pipe of the above diameter and material, the air pipe of other sizes or materials can be selected, for example, seamless steel pipe etc. can select the air pipe of suitable size according to the requirement of actual granary size and circulation, can realize the technical effect of the utility model equally.

In a preferred embodiment, the valve may be a butterfly valve of relatively simple construction, which is suitable for on-off control of low pressure conduit media, and which may be used to control the flow of various types of fluids, such as air, water, steam, etc., to shut off and throttle flow in the recirculation passage. It should be realized that besides using the butterfly valve as the control switch, one or more of a gate valve, a ball valve and a butterfly valve can be selected for mixed use, and a suitable valve can be selected for use according to actual use requirements or pressure requirements, and the technical effects of the utility model can be realized as well.

Fig. 3 shows schematic diagrams of different circulation modes of a granary circulation fumigation system according to an embodiment of the present invention, as shown in fig. 3, the circulation is opened after nitrogen filling in the granary, and at this time, the operation path of the air flow is: the air outlet of the second air duct 2 → the grain surface → the grain pile → the air outlet duct 5 → the inner circulating duct 4 → the first air duct 1 → the circulating fan 6 → the third air duct 3 → the second air duct 2 → the air outlet of the second air duct 2, forming a circulation.

The utility model discloses a circulating system bulkhead row accumulated heat system has realized getting rid of bulkhead damp and hot air all around through the circulation during nitrogen filling degree summer, promotes the interior air flow of upper surface layer simultaneously in the grain heap, controls upper surface layer grain temperature rise range effectively through air conditioner accuse temperature, has effectively delayed the bulkhead all around grain moisture and fatty acid's rise range to through bulkhead row accumulated heat system, the bulkhead does not appear condensation and moisture proof point respectively emergently etc. store up grain hidden danger all around. The labor cost for turning over the grain surface and the cost of the grain cooler are reduced. The deterioration speed of the grain quality around the bin wall and on the surface layer of the grain pile is delayed, relatively fresh grains are provided for the society, and the noise pollution to the environment caused by using large-scale ventilation mechanical equipment is avoided.

It will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present invention without departing from the spirit and scope of the invention. In this way, if these modifications and changes are within the scope of the claims of the present invention and their equivalents, the present invention is also intended to cover these modifications and changes. The word "comprising" does not exclude the presence of other elements or steps than those listed in a claim. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage. Any reference signs in the claims shall not be construed as limiting the scope.

Claims

1. The circulating system for the squat silo is characterized by comprising a fan, a first air pipe, a second air pipe, a third air pipe and an inner circulating pipe, wherein the fan, the first air pipe, the second air pipe and the third air pipe are arranged outside a silo body, the inner circulating pipe is arranged at the top of the silo body, the first air pipe and the second air pipe are arranged along the height direction of the silo body, one end of the first air pipe and one end of the second air pipe penetrate through the outer wall of the top of the silo body and stretch into the silo body, the other end of the first air pipe and the other end of the second air pipe are connected through the third air.

2. The circulation system for a squat silo of claim 1, wherein the first ductwork is for exhaust air, the second ductwork is for intake air and the first ductwork and the second ductwork are disposed at two quarter endpoints of the circumferential outer wall of the silo body.

3. The circulation system for the squat silo according to claim 1 or 2, wherein the first air duct, the second air duct and the third air duct are respectively provided with a first fan and a second fan at the connection points.

4. The circulation system for the squat silo according to claim 1, wherein the second air duct has a tee joint at the end outside the silo body, the tee joint is used for connecting the third air duct and an external nitrogen duct respectively, and two valves are arranged on the tee joint respectively.

5. The circulation system for the squat silo according to claim 1, wherein the inner circulation pipe is a semi-annular air pipe arranged along the side wall of the top in the silo body, two ends of the semi-annular air pipe are sealed, and the middle of the semi-annular air pipe is provided with a plurality of three-way joints at intervals.

6. The circulation system for the squat silo according to claim 5, wherein the inner circulation pipe is provided with a plurality of air outlet pipes at intervals, the air outlet pipes are connected with the three-way connector, and the air outlet pipes are arranged towards the bottom of the silo body.

7. The circulation system for the squat silo according to claim 6, wherein the wall of the outlet pipe is provided with a plurality of outlet holes at intervals.

8. The circulation system for the squat silo of claim 1, wherein the top inside the silo body is further provided with a refrigeration device.

9. The circulation system for a squat silo according to claim 1, wherein the first, second and third ductwork are jacketed with a thermal insulating material over a section of the silo exterior.

10. The circulation system for a squat silo according to claim 1 wherein there are two sets of circulation systems disposed on the squat silo wherein the ductwork external to the silo body is disposed at each of four quarter points about the circumference of the silo body.