Ventilation, fumigation and pressure reduction device for grain silo

Abstract

The invention relates to a grain silo ventilation, fumigation and pressure reduction device, and relates to the related field of warehousing, the grain silo ventilation, fumigation and pressure reduction device comprises at least four grain inlet cylinders, the four grain inlet cylinders are coaxially fixed to form a grain inlet pipe and an air pumping part, the air pumping part is fixed to the bottom of the grain inlet pipe, a support is fixed to the bottom of the air pumping part, and the air pumping part is fixed to the bottom of the support. A plurality of air duct pipes are fixed to the circumference of the outer wall of the grain inlet pipe at equal intervals, and air inlet and outlet pipes communicating with the air duct pipes are fixed to the sides, away from the grain inlet pipe, of the air duct pipes correspondingly. Compared with the prior art, the device has the advantages that the device is simpler in operation, meanwhile, the pesticide can be brought into the granary through the air flow in the aspect of deinsectization, the process can be carried out after the granary is put into the granary, and then deinsectization work after the grain is put into the granary is simpler.

Description

Technical Field

[0001] The invention relates to storage-related fields, and in particular to a device for ventilation, fumigation and decompression of grain silos. Background Art

[0002] Granary decompression refers to a device installed inside the granary that can adjust the air pressure and humidity.

[0003] The pressure reducing pipe for grain entering the warehouse is also called the ventilation pipe or the pressure reducing vent pipe. Its main function is to avoid problems such as explosion or mildew through ventilation adjustment through the pressure reducing pipe when the grain pile undergoes natural changes, such as when the grain expands, contracts or lumps due to increased temperature or humidity.

[0004] In order to solve the above problems, a multifunctional device for ventilation, fumigation and decompression of grain silos was disclosed, CN2275347Y;

[0005] Although impurities have been removed when the grain enters the warehouse, there will still be a certain amount of dust and straw residues mixed in it. The device cannot process the dust and straw residues, resulting in the need for secondary processing of the grain in the warehouse in subsequent processing;

[0006] Secondly, since the decompression treatment of grain in the granary requires a certain amount of chemicals to inhibit it, the device also does not have this function. In addition, the pest control of the granary also requires chemicals, which is not convenient to handle after the grain is stored in the warehouse. Summary of the invention

[0007] The object of the present invention is to provide a device for ventilation, fumigation and decompression of grain silos to solve the problems raised in the above-mentioned background technology.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] A device for ventilation, fumigation and decompression of grain silos, comprising:

[0010] At least four grain feeding cylinders, which are coaxially fixed to form a grain feeding pipe;

[0011] An air pumping member, the air pumping member is fixed to the bottom of the grain inlet pipe, and a bracket is fixed to the bottom of the air pumping member;

[0012] A plurality of air duct pipes are fixed at equal intervals on the circumference of the outer wall of the grain inlet pipe, and an inlet and outlet air duct connected to the inlet and outlet air ducts are fixed on the side of the plurality of air duct pipes away from the grain inlet pipe, a dosing mechanism is installed on the inlet and outlet air ducts, and an impurity removal mechanism is installed on the air duct pipes and the inlet and outlet air ducts;

[0013] A grain feeding hopper is fixed on the top of the grain feeding pipe, and a dispersion piece is also fixed inside the grain feeding pipe.

[0014] As a further solution of the present invention: the medicine adding mechanism comprises a material storage box fixed to the outer wall of the air inlet and outlet duct, the bottom of the material storage box is provided with an inclined cone bottom integrally formed therewith, a positioning frame is also fixed on the air inlet and outlet duct, a medicine delivery box is slidably arranged in the positioning frame along the width direction, a receiving groove is provided on the medicine delivery box, and the receiving groove cooperates with the inclined cone bottom;

[0015] A discharge pipe connected to the positioning frame is fixed on one side thereof, the discharge pipe is connected to the inside of the air inlet and outlet ducts, a discharge slot matching the discharge pipe is provided on the medicine delivery box, and the medicine delivery box is connected to a positive pressure assembly and a driving assembly installed on the air inlet and outlet ducts;

[0016] The width of the medicine delivery box is three times that of the receiving groove, and the receiving groove is located on one side of the medicine delivery box. When the receiving groove overlaps with the inclined cone bottom, the medicine can fall into the receiving groove, and the inclined cone bottom is blocked when the medicine delivery box moves.

[0017] As a further solution of the present invention: the driving assembly includes an impeller box fixed to one side of the air inlet and outlet duct and connected thereto, and an impeller is coaxially mounted in the impeller box;

[0018] A ratchet disc is rotatably mounted on the air inlet and outlet ducts, a driven wheel cooperating therewith is rotatably mounted on one side of the ratchet disc, the ratchet disc is connected to the rotating shaft of the impeller through a transmission chain, and at least two limiting rollers for limiting the transmission chain are rotatably mounted on the air inlet and outlet ducts;

[0019] A guide is also fixed to the side of the driven wheel away from the pawl disk, a slide rod is slidably installed on the guide, a rack plate is fixed to the side of the slide rod facing the driven wheel, the rack plate cooperates with the driven wheel, a transmission frame is fixed to the side of the slide rod away from the driven wheel, the transmission frame cooperates with a No. 1 force plate slidably installed on the inlet and outlet air ducts through an inclined surface set at its end, a No. 2 force plate is fixed to the medicine delivery box, and the No. 2 force plate cooperates with the No. 1 force plate through an inclined surface set at its end;

[0020] A No. 2 guide rod is fixed inside the No. 2 force-bearing plate and the No. 1 force-bearing plate. The No. 2 guide rod is slidably matched with a No. 1 limiter fixed on the inlet and outlet air ducts. A No. 2 spring is sleeved on the No. 2 guide rod.

[0021] Wherein, the No. 2 spring in the No. 2 force plate is in a compressed state, and one end is fixed to the No. 2 force plate and the other end is fixed to the No. 1 limiter;

[0022] The driven wheel comprises a coaxially fixed toothed ring portion and a ratchet portion, the ratchet portion is unidirectionally matched with the ratchet plate, the toothed ring portion is matched with the rack plate, and the annular teeth on the toothed ring portion are arranged in sections;

[0023] A guide rod No. 1 is also fixed on the slide rod, a spring No. 1 is sleeved on the guide rod No. 1, and the slide rod is connected to the positive pressure assembly.

[0024] As a further solution of the present invention: the positive pressure assembly comprises a piston cylinder fixed on the air inlet and outlet pipes, and the air outlet end of the piston cylinder is connected to the medicine delivery box through a delivery pipe;

[0025] A piston is sealingly and slidably installed in the piston cylinder, and a sleeve tube is coaxially fixed to the piston on the side facing the slide rod. The slide rod is inserted into the sleeve tube and slidably cooperates with it. Limiting grooves are provided on all four sides of the sleeve tube, and a limiting protrusion is slidably installed in the limiting groove, and the limiting protrusion is fixed to the slide rod.

[0026] As a further solution of the present invention: the impurity removal mechanism includes an air outlet hole opened on the outer wall of the grain feeding cylinder, the air outlet hole connects the air duct pipe with the grain feeding cylinder, a baffle for sealing the air outlet hole is slidably installed in the air duct pipe, and the baffle is driven by a steering gear;

[0027] A rectangular groove is provided at the bottom of the air inlet and outlet duct, a screen plate is hinged at the rectangular groove, an embedded screen plate is slidably installed in the screen plate, and the embedded screen plate is connected to an opening and closing component arranged in the air inlet and outlet duct;

[0028] The sieve plate is connected to a pulling assembly installed in the air inlet and outlet ducts, and the pulling assembly is connected to the driving assembly;

[0029] A collecting box is fixed at the bottom of the rectangular groove, a guide plate is fixed in the collecting box, and filtering holes are opened on the guide plate.

[0030] As a further solution of the present invention: the pulling assembly includes a screw rod rotatably mounted on the inner wall of the air inlet and outlet duct, and the screw rod is connected to the rotating shaft of the ratchet plate through a bevel gear set; the bevel gear set includes two mutually meshing bevel gears, and the two bevel gears are coaxially fixed to the ratchet plate and the screw rod respectively;

[0031] The screw rod is sleeved with a threaded sleeve which is threadedly matched with it. The threaded sleeve is rotatably connected to the screen plate via a transmission plate rotatably connected with it. Both ends of the threaded part of the screw rod are provided with No. 2 limiters. No. 4 springs are fixed on opposite sides of the two No. 2 limiters. The No. 4 spring is coaxially arranged with the screw rod, and both ends of the threaded sleeve are coaxially provided with a conical part which is matched with the No. 4 spring.

[0032] As a further solution of the present invention: the opening and closing assembly includes a No. 3 spring fixed to the end of the embedded screen plate, and the other end of the No. 3 spring is fixed to the inner bottom of the screen plate;

[0033] A pull rope is also fixed to the end of the embedded screen plate, and the other end of the pull rope is fixed to the inner wall of the threaded sleeve. A protrusion is also provided on the inner wall of the inlet and outlet air duct, and the protrusion cooperates with the pull rope.

[0034] As a further solution of the present invention: the threaded portion of the screw rod adopts a raised thread, and a thread groove adapted to the raised thread is provided in the threaded sleeve.

[0035] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention realizes that the medicine is brought to the granary and the grain feeding tube through the airflow during air supply through the medicine adding mechanism, and the addition of the medicine is integrated into the air supply pipe and mixed into the airflow in a quantitative and uniform manner. Compared with the prior art, the operation is simpler, and at the same time, in terms of pest control, the medicine can be brought to the granary and the grain feeding tube through the airflow, and this process can be carried out after the grain has been stored in the granary, thereby making the pest control work after the grain has been stored in the granary simpler;

[0036] Secondly, the present invention achieves the effect of removing impurities mixed in the grain when it is put into the warehouse through the impurity removal mechanism, which makes the grain put into the warehouse cleaner and avoids the process of subsequent processing and re-treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a schematic diagram of the overall structure of the device used for ventilation, fumigation and decompression of grain silos.

[0038] Figure 2 for Figure 1 Cross-section of part of the structure.

[0039] Figure 3 This is a schematic diagram of the structure of the dosing mechanism and the impurity removal mechanism in the device for ventilation, fumigation and decompression of grain silos.

[0040] Figure 4 for Figure 3 Schematic diagram of the structure in another direction.

[0041] Figure 5 This is a schematic diagram of the structure of the positive pressure component in the device used for ventilation, fumigation and decompression of grain silos.

[0042] Figure 6 for Figure 5 Schematic diagram of the structure from another angle.

[0043] Figure 7 This is a schematic diagram of the structure of the box pipe in the device used for ventilation, fumigation and decompression of grain silos.

[0044] Figure 8 for Figure 7 Enlarged view of point A in the middle.

[0045] Fig. 9This is a schematic diagram of the structure of the No. 1 limiter and No. 2 spring in the device for ventilation, fumigation and decompression of grain silos.

[0046] Fig.10 for Fig. 9 Enlarged view of point B in the middle.

[0047] Fig.11 It is a structural schematic diagram of the inclined cone bottom of the storage box.

[0048] Fig.12 This is a schematic diagram of the structure of the pulling assembly in the device used for ventilation, fumigation and decompression of grain silos.

[0049] Fig.13 A plan perspective view of the cards and components in a device for ventilation, fumigation and decompression of grain silos.

[0050] Fig.14 for Fig.13 Enlarged view of point C in the middle.

[0051] Fig.15 This is a schematic diagram of the structure of the driven wheel in the device for ventilation, fumigation and decompression of grain silos.

[0052] In the figure: 1. grain feeding cylinder; 102. grain feeding hopper; 103. air inlet and outlet ducts; 104. through slot; 105. air pump; 106. dispersion member; 107. air outlet; 108. baffle; 109. air inlet; 110. air duct; 2. impeller box; 3. impeller; 4. transmission chain; 5. limit roller; 6. driven wheel; 601. gear ring; 602. ratchet; 7. ratchet plate; 8. storage box; 801. inclined cone bottom; 9. piston cylinder; 901. conveying pipe; 902. slide rod; 903. guide member; 904. guide rod No. 1; 905. spring No. 1; 906. transmission frame; 907. No. 1 stress plate; 908, medicine delivery box; 909, discharge pipe; 9010, No. 2 stress plate; 9011, rack plate; 9012, positioning frame; 9013, sleeve pipe; 9014, limiting groove; 9015, limiting protrusion; 9016, No. 1 limiting piece; 9017, No. 2 guide rod; 9018, No. 2 spring; 10, collection box; 1001, guide plate; 11, screw rod; 12, bevel gear set; 13, threaded sleeve; 14, transmission plate; 15, sieve plate; 1501, embedded sieve plate; 1502, No. 3 spring; 1503, pull rope; 16, No. 2 limiting piece; 1601, No. 4 spring. DETAILED DESCRIPTION

[0053] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0054] In addition, when an element in the present invention is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only embodiment.

[0055] For example, see Figures 1 to 15 , a device for ventilation, fumigation and decompression of grain silos, comprising at least four grain feeding cylinders 1, wherein the four grain feeding cylinders 1 are coaxially fixed to form a grain feeding pipe;

[0056] A pump air member 105 fixed to the bottom of the grain inlet pipe, wherein a bracket is fixed to the bottom of the pump air member 105;

[0057] A plurality of air ducts 110 are fixed at equal intervals on the outer wall of the grain inlet pipe, and an inlet and outlet air duct 103 connected to the inlet and outlet air ducts 103 is fixed on the side of the plurality of air ducts 110 away from the grain inlet pipe. A dosing mechanism is installed on the inlet and outlet air ducts 103, and an impurity removal mechanism is installed on the air ducts 110 and the inlet and outlet air ducts 103;

[0058] A grain feeding hopper 102 is fixed on the top of the grain feeding pipe, and a dispersion member 106 is also fixed inside the grain feeding pipe.

[0059] In the embodiment of the present invention, when storing grain, the grain is put into the grain feeding cylinder 1 through the grain feeding hopper 102. The grain can enter the grain feeding cylinder 1 at a uniform speed and in a uniform amount through the grain feeding hopper 102, and then the grain is dispersed by the dispersing member 106, and finally the grain falls to the support position. Of course, the support is equipped with a device for dispersing the accumulated grain, which is not shown in the figure.

[0060] The dosing mechanism and the impurity removal mechanism in the present invention are both realized by the wind force in the air inlet and outlet duct 103 and the air duct 110;

[0061] In order to prevent the grain from expanding, shrinking or agglomerating due to the increase of grain temperature and humidity, the fan is started to pump air into the inlet and outlet air duct 103, and the airflow during the pumping drives the dosing mechanism to work. A certain amount of medicine is added into the flowing water through the dosing mechanism, so that the medicine is driven by the airflow to move into the inlet and outlet air duct 103 and the air duct 110, and finally discharged into the grain feeding barrel 1 through the air inlet hole 109. The through groove 104 provided on the grain feeding barrel 1 allows the airflow to move toward the top, and with the movement of the airflow, air is pumped into the "granary" to reduce the temperature of the grain, and the humidity and grain insects in the grain can be controlled by the medicine;

[0062] Secondly, the impurity removal mechanism is still realized through the inlet and outlet air ducts 103 and the air duct 110. When the fan is working, it is in the exhaust state. When the grain is put into the warehouse, the impurities in the grain are sucked out and the impurities are separated.

[0063] The dosing mechanism includes a storage box 8 fixed to the outer wall of the air inlet and outlet duct 103, the bottom of the storage box 8 is provided with an inclined cone bottom 801 integrally formed therewith, a positioning frame 9012 is also fixed to the air inlet and outlet duct 103, a medicine delivery box 908 is slidably arranged in the positioning frame 9012 along the width direction, and a receiving groove is provided on the medicine delivery box 908, and the receiving groove cooperates with the inclined cone bottom 801;

[0064] A discharge pipe 909 connected to the positioning frame 9012 is fixed on one side thereof, and the discharge pipe 909 is connected to the inside of the air inlet and outlet pipe 103. A discharge slot matching the discharge pipe 909 is provided on the medicine delivery box 908, and the medicine delivery box 908 is connected to the positive pressure assembly and the driving assembly installed on the air inlet and outlet pipe 103;

[0065] The width of the medicine delivery box 908 is three times that of the receiving groove, and the receiving groove is located on one side of the medicine delivery box 908. When the receiving groove overlaps with the inclined cone bottom 801, the medicine can fall into the receiving groove, and the inclined cone bottom 801 is blocked when the medicine delivery box 908 moves.

[0066] In the embodiment of the present invention, when the driving component is working, the positive pressure component is driven to work;

[0067] When the driving component is working, it first drives the medicine delivery box 908 to move. When the receiving groove of the medicine delivery box 908 is misaligned with the inclined cone bottom 801, the positive pressure component increases the pressure in the receiving groove. During the process of increasing the pressure in the receiving groove, the medicine delivery box 908 is still in a moving state. When the discharge groove of the medicine delivery box 908 coincides with the discharge pipe 909, the air pressure in the medicine delivery box 908 instantly ejects the medicine in the medicine delivery box 908. The medicine is dispersed in the inlet and outlet air ducts 103 under the high-speed injection of the medicine under pressure, and is carried to the granary and the grain feeding cylinder 1 by the air flow.

[0068] The driving assembly includes an impeller box 2 fixed to one side of the air inlet and outlet duct 103 and connected thereto, and an impeller 3 is coaxially mounted in the impeller box 2;

[0069] A ratchet plate 7 is rotatably mounted on the air inlet and outlet duct 103, a driven wheel 6 is rotatably mounted on one side of the ratchet plate 7, the ratchet plate 7 is connected to the rotating shaft of the impeller 3 through a transmission chain 4, and at least two limiting rollers 5 for limiting the transmission chain 4 are rotatably mounted on the air inlet and outlet duct 103;

[0070] A guide member 903 is also fixed to the side of the driven wheel 6 away from the pawl plate 7, a slide bar 902 is slidably mounted on the guide member 903, a rack plate 9011 is fixed to the side of the slide bar 902 facing the driven wheel 6, the rack plate 9011 cooperates with the driven wheel 6, a transmission frame 906 is fixed to the side of the slide bar 902 away from the driven wheel 6, the transmission frame 906 cooperates with a No. 1 force plate 907 slidably mounted on the inlet and outlet air duct 103 through an inclined surface set at its end, a No. 2 force plate 9010 is fixed to the medicine delivery box 908, and the No. 2 force plate 9010 cooperates with the No. 1 force plate 907 through an inclined surface set at its end;

[0071] A second guide rod 9017 is fixed inside the second force plate 9010 and the first force plate 907. The second guide rod 9017 is slidably matched with a first stopper 9016 fixed on the air inlet and outlet duct 103. A second spring 9018 is sleeved on the second guide rod 9017.

[0072] The second spring 9018 in the second force plate 9010 is in a compressed state, and one end is fixed to the second force plate 9010 and the other end is fixed to the first stopper 9016;

[0073] The driven wheel 6 comprises a coaxially fixed toothed ring portion 601 and a ratchet portion 602, wherein the ratchet portion 602 is unidirectionally matched with the ratchet plate 7, and the toothed ring portion 601 is matched with the rack plate 9011, and the annular teeth on the toothed ring portion 601 are arranged in sections;

[0074] A No. 1 guide rod 904 is also fixed on the slide rod 902 , and a No. 1 spring 905 is sleeved on the No. 1 guide rod 904 . The slide rod 902 is connected to the positive pressure assembly.

[0075] In the embodiment of the present invention, when the fan is working, airflow is generated in the air inlet and outlet ducts 103, and the impeller 3 is driven to rotate by the airflow. When the impeller 3 rotates, the pawl plate 7 is driven to rotate through the transmission chain 4. When the pawl plate 7 rotates, the driven wheel 6 is driven to rotate, so that the ratchet portion 602 on the driven wheel 6 engages with the rack plate 9011 to drive the slide bar 902 to move. When the slide bar 902 moves, the No. 1 spring 905 is compressed, so that the No. 1 spring 905 reserves a certain amount of elastic potential energy, and when the slide bar 902 moves, it also drives the transmission frame 906 to follow the movement, so that the No. 1 force plate 907 is driven to move through the inclined surface of the transmission frame 906. The No. 1 force plate 907 moves vertically as the guide member 903, and moves away from the driven wheel 6. In the direction, when the No. 1 force plate 907 moves, the No. 2 force plate 9010 and the medicine delivery box 908 are driven to move by cooperating with the inclined surface of the No. 2 force plate 9010, and when the No. 2 force plate 9010 and the No. 1 force plate 907 move, the No. 2 spring 9018 inside them is also pulled up / compressed, so that the two No. 2 springs 9018 both reserve elastic potential energy, and when the segment part of the tooth ring of the tooth ring part 601 rotates toward the rack plate 9011, the rack plate 9011 is disengaged from the tooth ring part 601, thereby releasing the elastic potential energy of the No. 1 spring 905 to drive the slide bar 902 to reset, and at the same time, the elastic potential energy of the two No. 2 springs 9018 is released to drive the No. 2 force plate 9010 and the No. 1 force plate 907 to reset;

[0076] The above-mentioned reciprocating motion is achieved by continuous rotation of the driven wheel 6, thereby achieving the reciprocating motion of the medicine delivery box 908.

[0077] The positive pressure assembly includes a piston cylinder 9 fixed on the air inlet and outlet pipes 103, and the air outlet end of the piston cylinder 9 is connected to the medicine delivery box 908 through a delivery pipe 901;

[0078] A piston is sealingly and slidably installed in the piston cylinder 9, and a sleeve tube 9013 is coaxially fixed to the piston on the side facing the slide rod 902. The slide rod 902 is inserted into the sleeve tube 9013 and slidably cooperates with it. Limiting grooves 9014 are provided on all four sides of the sleeve tube 9013. A limiting protrusion 9015 is slidably installed in the limiting groove 9014, and the limiting protrusion 9015 is fixed to the slide rod 902.

[0079] In the embodiment of the present invention, when the slide bar 902 moves, it moves in the direction of the piston. During this movement, the sleeve tube 9013 and the slide bar 902 slide relative to each other and do not drive the sleeve tube 9013 to move. When the slide bar 902 moves to the end of the sliding stroke of the limit groove 9014 and the limit protrusion 9015, the sleeve tube 9013 is pushed to move synchronously with the slide bar 902. In this process, the piston is driven to move with the slide bar 902.

[0080] Among them, the movement of the slide bar 902 is the movement of the medicine delivery box 908. When the slide bar 902 moves, it first drives the medicine delivery box 908 to move a certain distance so that the receiving groove of the medicine delivery box 908 is misaligned with the inclined cone bottom 801, and then the receiving groove is sealed. In the sealed state, the receiving groove pushes the piston to increase the pressure to the receiving groove through the delivery pipe 901.

[0081] The impurity removal mechanism includes an air outlet 107 opened on the outer wall of the grain feeding cylinder 1, the air outlet 107 connects the air duct 110 with the grain feeding cylinder 1, and a baffle 108 for sealing the air outlet 107 is slidably installed in the air duct 110, and the baffle 108 is driven by a steering gear;

[0082] A rectangular groove is provided at the bottom of the air inlet and outlet duct 103, a sieve plate 15 is hinged at the rectangular groove, an embedded sieve plate 1501 is slidably installed in the sieve plate 15, and the embedded sieve plate 1501 is connected to the opening and closing assembly provided in the air inlet and outlet duct 103;

[0083] The sieve plate 15 is connected to a pulling assembly installed in the air inlet and outlet duct 103, and the pulling assembly is connected to the driving assembly;

[0084] A collecting box 10 is fixed at the bottom of the rectangular trough, a guide plate 1001 is fixed inside the collecting box 10, and filtering holes are opened on the guide plate 1001.

[0085] In the embodiment of the present invention, when grain is put into the warehouse, the grain is dispersed by the dispersing member 106, and the dust and impurities mixed therein are also separated;

[0086] At this time, the baffle 108 is driven down by the steering gear to release the seal of the air outlet 107, and the fan is working to generate suction in the air duct 110, and the dust and impurities are discharged through the air duct 110 and the air inlet and outlet ducts 103 by the suction force;

[0087] Among them, in this process, the wind direction in the inlet and outlet air duct 103 is reversed, and then the rotation direction of the impeller 3 is also reversed, and the corresponding pawl plate 7 also rotates in the opposite direction, and the pawl plate 7 and the driven wheel 6 are unidirectionally matched. The rotation of the pawl plate 7 in this process does not cause the driven wheel 6 to rotate, and then the medicine pressing mechanism does not work. At this time, the rotation of the pawl plate 7 drives the pull assembly to work, and the sieve plate 15 is pulled to an inclined state through the pull assembly, so that a filter plate is formed in the inlet and outlet air duct 103. When the airflow moves, the dust and impurities will be intercepted due to the existence of the sieve plate 15, and at the same time, the amount of airflow passing through will be reduced, so that part of the airflow moves to the collection box 10. In this process, since the sieve plate 15 is in an inclined state, the dust and impurities attached to the sieve plate 15 will be blown into the collection box 10, so that the sieve plate 15 can achieve a self-cleaning effect;

[0088] The guide plate 1001 in the collection box 10 guides the airflow and filters the dust and impurities, and makes the impurities and dust stay in the collection box 10.

[0089] It should be noted that the sieve holes of the embedded sieve plate 1501 are the same size as the sieve holes on the sieve plate 15, and the sieve holes on the embedded sieve plate 1501 and the sieve plate 15 can be misaligned and overlapped by driving the embedded sieve plate 1501 to slide, thereby achieving the effect of closing and opening the sieve holes. The sieve holes are opened when the sieve plate 15 is flipped and tilted, and are closed and sealed when flipped to avoid impurities being blown out and into the grain feed cylinder 1 when pumping air into the grain feed cylinder 1.

[0090] The pulling assembly includes a screw rod 11 rotatably mounted on the inner wall of the air inlet and outlet duct 103, and the screw rod 11 is connected to the rotating shaft of the ratchet plate 7 through a bevel gear set 12; the bevel gear set 12 includes two mutually meshing bevel gears, and the two bevel gears are coaxially fixed to the ratchet plate 7 and the screw rod 11 respectively;

[0091] The screw rod 11 is sleeved with a threaded sleeve 13 which is threadedly matched with it. The threaded sleeve 13 is rotatably connected to the screen plate 15 via a transmission plate 14 rotatably connected with it. No. 2 limiters 16 are provided at both ends of the threaded portion of the screw rod 11. No. 4 springs 1601 are fixed on opposite sides of the two No. 2 limiters 16. The No. 4 spring 1601 is coaxially arranged with the screw rod 11, and both ends of the threaded sleeve 13 are coaxially arranged with a conical portion which matches the No. 4 spring 1601.

[0092] In the embodiment of the present invention, the corresponding structure drives the pawl plate 7 to rotate during air extraction, and the screw rod 11 is driven to rotate through the bevel gear set 12 when the pawl plate 7 rotates, so that the screw rod 11 and the threaded sleeve 13 are matched with each other to drive the threaded sleeve 13 to move toward the pawl plate 7, and when the threaded sleeve 13 moves, the transmission plate 14 drives the screen plate 15 to flip;

[0093] When the threaded sleeve 13 moves to contact with the No. 4 spring 1601 and then continues to move to compress the No. 4 spring 1601, so that the No. 4 spring 1601 reserves elastic potential energy. When the threaded sleeve 13 is disengaged from the threaded portion of the screw rod 11, the threaded sleeve 13 is in a state of sliding cooperation with the screw rod 11. By releasing the elastic potential energy of the No. 4 spring 1601, the threaded sleeve 13 is driven to thrust toward the threaded portion of the screw rod 11, so that the threaded sleeve 13 and the threaded portion of the screw rod 11 are in a state of contact and not threaded cooperation. When the screw rod 11 moves in the opposite direction, the threaded cooperation can continue, so that the threaded sleeve 13 moves in the opposite direction away from the pawl plate 7. Similarly, when the threaded sleeve 13 moves in the direction away from the pawl plate 7, the effect is the same as described above.

[0094] This is achieved through the above-mentioned movement state: when the airflow moves toward the grain feeding cylinder 1, the sieve plate 15 is closed, and vice versa.

[0095] The threaded portion of the screw rod 11 is a raised thread, and a thread groove matching the raised thread is provided in the threaded sleeve 13 .

[0096] The threaded portion of the threaded sleeve 13 is similar to the thread of a bolt, and the corresponding thread groove inside the threaded sleeve 13 is similar to a nut. This structure ensures that the threaded sleeve 13 will not or will not damage the internal thread groove when sliding after it is separated from the threaded portion of the screw rod 11.

[0097] The opening and closing assembly includes a No. 3 spring 1502 fixed to the end of the embedded screen plate 1501, and the other end of the No. 3 spring 1502 is fixed to the bottom of the screen plate 15;

[0098] A pull rope 1503 is also fixed to the end of the embedded sieve plate 1501 , and the other end of the pull rope 1503 is fixed to the inner wall of the threaded sleeve 13 . A protrusion is also provided on the inner wall of the air inlet and outlet duct 103 , and the protrusion cooperates with the pull rope 1503 .

[0099] In the embodiment of the present invention, when the sieve plate 15 is closed, it drives the embedded sieve plate 1501 to move along, and the corresponding pull rope 1503 also moves along. When the sieve plate 15 is flipped to a state close to parallel, the pull rope 1503 contacts the protrusion, and a pulling force is applied to the embedded sieve plate 1501 through the cooperation and limitation of the protrusion and the pull rope 1503, so that the embedded sieve plate 1501 slides into the sieve plate 15. At the same time, the No. 3 spring 1502 is compressed, so that the No. 3 spring 1502 reserves elastic potential energy. When the sieve plate 15 is opened, it flips in the opposite direction to contact the limitation of the pull rope 1503, and pushes the embedded sieve plate 1501 out by releasing the elastic potential energy of the No. 3 spring 1502. The retraction of the embedded sieve plate 1501 is the misalignment of the sieve plate 15 and the sieve holes of the embedded sieve plate 1501, and the extension is the overlap.

[0100] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0101] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A device for ventilation and fumigation decompression of grain silos, characterized in that: include: At least four grain feeding cylinders (1), wherein the four grain feeding cylinders (1) are coaxially fixed to form a grain feeding pipe; An air pumping member (105), the air pumping member (105) is fixed to the bottom of the grain inlet pipe, and a bracket is fixed to the bottom of the air pumping member (105); A plurality of air duct pipes (110) are fixed at equal intervals on the circumference of the outer wall of the grain inlet pipe, and an air inlet and outlet pipe (103) connected to the air duct pipe (110) is fixed on one side of the air duct pipe (110) away from the grain inlet pipe, and a medicine adding mechanism is installed on the air inlet and outlet pipe (103), and an impurity removal mechanism is installed on the air duct pipe (110) and the air inlet and outlet pipe (103); A grain feeding hopper (102) is fixed on the top of the grain feeding pipe, and a dispersion piece (106) is also fixed inside the grain feeding pipe.

2. The device for ventilation and fumigation decompression of grain silos according to claim 1, characterized in that: The drug adding mechanism comprises a material storage box (8) fixed to the outer wall of the air inlet and outlet duct (103), and the bottom of the material storage box (8) is provided with an inclined cone bottom (801) integrally formed therewith. A positioning frame (9012) is also fixed on the air inlet and outlet duct (103), and the positioning frame (9012) The medicine delivery box (908) is slidable in the width direction, and the medicine delivery box (908) is provided with a receiving groove, and the receiving groove cooperates with the inclined cone bottom (801); A discharge pipe (909) connected to the positioning frame (9012) is fixed on one side thereof, the discharge pipe (909) being connected to the inside of the air inlet and outlet pipes (103), a discharge slot cooperating with the discharge pipe (909) is provided on the medicine delivery box (908), and the medicine delivery box (908) is connected to a positive pressure assembly and a driving assembly installed on the air inlet and outlet pipes (103); The width of the medicine delivery box (908) is three times that of the receiving groove, and the receiving groove is located on one side of the medicine delivery box (908). When the receiving groove overlaps with the inclined cone bottom (801), the medicine can fall into the receiving groove, and the inclined cone bottom (801) is blocked when the medicine delivery box (908) moves.

3. The device for ventilation and fumigation decompression of grain silos according to claim 2, characterized in that: The driving assembly comprises an impeller box (2) fixed to one side of the air inlet and outlet duct (103) and connected thereto, and an impeller (3) is coaxially rotatably mounted in the impeller box (2); A ratchet plate (7) is rotatably mounted on the air inlet and outlet duct (103), a driven wheel (6) cooperating therewith is rotatably mounted on one side of the ratchet plate (7), the ratchet plate (7) is connected to the rotating shaft of the impeller (3) via a transmission chain (4), and at least two limiting rollers (5) for limiting the transmission chain (4) are also rotatably mounted on the air inlet and outlet duct (103); A guide member (903) is also fixed on the side of the driven wheel (6) away from the pawl plate (7), a slide bar (902) is slidably mounted on the guide member (903), a rack plate (9011) is fixed on the side of the slide bar (902) facing the driven wheel (6), the rack plate (9011) cooperates with the driven wheel (6), a transmission frame (906) is fixed on the side of the slide bar (902) away from the driven wheel (6), the transmission frame (906) cooperates with a No. 1 force plate (907) slidably mounted on the inlet and outlet air duct (103) through an inclined surface arranged at its end, a No. 2 force plate (9010) is fixed on the medicine delivery box (908), and the No. 2 force plate (9010) cooperates with the No. 1 force plate (907) through an inclined surface arranged at its end; A No. 2 guide rod (9017) is fixed inside the No. 2 force-bearing plate (9010) and the No. 1 force-bearing plate (907), and the No. 2 guide rod (9017) is slidably matched with a No. 1 limiter (9016) fixed on the inlet and outlet air duct (103), and a No. 2 spring (9018) is sleeved on the No. 2 guide rod (9017); Wherein, the No. 2 spring (9018) in the No. 2 force-bearing plate (9010) is in a compressed state, and one end is fixed to the No. 2 force-bearing plate (9010) and the other end is fixed to the No. 1 limiter (9016); The driven wheel (6) comprises a coaxially fixed toothed ring portion (601) and a ratchet portion (602), the ratchet portion (602) unidirectionally cooperates with the ratchet plate (7), the toothed ring portion (601) cooperates with the rack plate (9011), and the annular teeth on the toothed ring portion (601) are arranged in sections; A No. 1 guide rod (904) is also fixed on the slide rod (902), a No. 1 spring (905) is sleeved on the No. 1 guide rod (904), and the slide rod (902) is connected to the positive pressure assembly.

4. The device for ventilation and fumigation decompression of grain silos according to claim 3, characterized in that: The positive pressure assembly comprises a piston cylinder (9) fixed on the air inlet and outlet pipes (103), The air outlet end of the piston cylinder (9) is connected to the medicine delivery box (908) through a delivery pipe (901); A piston is sealingly and slidably installed in the piston cylinder (9), and a sleeve tube (9013) is coaxially fixed to the piston on the side facing the slide rod (902). The slide rod (902) is inserted into the sleeve tube (9013) and slidably cooperates with it. Limiting grooves (9014) are provided on all four sides of the sleeve tube (9013). A limiting protrusion (9015) is slidably installed in the limiting groove (9014), and the limiting protrusion (9015) is fixed to the slide rod (902).

5. The device for ventilation, fumigation and decompression of grain silos according to claim 4, characterized in that: The impurity removal mechanism comprises an air outlet hole (107) formed on the outer wall of the grain feeding cylinder (1), the air outlet hole (107) connects the air duct pipe (110) with the grain feeding cylinder (1), a baffle plate (108) for sealing the air outlet hole (107) is slidably installed in the air duct pipe (110), and the baffle plate (108) is driven by a steering gear; A rectangular groove is provided at the bottom of the air inlet and outlet duct (103), a sieve plate (15) is hingedly connected to the rectangular groove, an embedded sieve plate (1501) is slidably installed in the sieve plate (15), and the embedded sieve plate (1501) is connected to an opening and closing component arranged in the air inlet and outlet duct (103); The sieve plate (15) is connected to a pulling component installed in the air inlet and outlet duct (103), and the pulling component is connected to the driving component; A collecting box (10) is fixed at the bottom of the rectangular trough, a guide plate (1001) is fixed inside the collecting box (10), and filtering holes are provided on the guide plate (1001).

6. The device for ventilation, fumigation and decompression of grain silos according to claim 5, characterized in that: The pulling assembly comprises a screw rod (11) rotatably mounted on the inner wall of the air inlet and outlet duct (103), the screw rod (11) being connected to the rotating shaft of the ratchet plate (7) via a bevel gear set (12); the bevel gear set (12) comprises two mutually meshing bevel gears, the two bevel gears being coaxially fixed to the ratchet plate (7) and the screw rod (11) respectively; The screw rod (11) is sleeved with a threaded sleeve (13) threadably matched therewith, and the threaded sleeve (13) is rotatably connected to the screen plate (15) via a transmission plate (14) rotatably connected thereto, and No. 2 limit pieces (16) are provided at both ends of the threaded portion of the screw rod (11), and No. 4 springs (1601) are fixed on opposite sides of the two No. 2 limit pieces (16), and the No. 4 springs (1601) are coaxially arranged with the screw rod (11), and both ends of the threaded sleeve (13) are coaxially arranged with a truncated cone portion cooperating with the No. 4 spring (1601).

7. The device for ventilation, fumigation and decompression of grain silos according to claim 6, characterized in that: The opening and closing assembly comprises a No. 3 spring (1502) fixed to the end of the embedded sieve plate (1501), and the other end of the No. 3 spring (1502) is fixed to the inner bottom of the sieve plate (15); A pull rope (1503) is also fixed to the end of the embedded screen plate (1501), and the other end of the pull rope (1503) is fixed to the inner wall of the threaded sleeve (13). The inner wall of the air inlet and outlet duct (103) is also provided with a protrusion, which cooperates with the pull rope (1503).

8. The device for ventilation, fumigation and decompression of grain silos according to claim 6, characterized in that: The threaded portion of the screw rod (11) adopts a raised thread, and a thread groove adapted to the raised thread is provided in the threaded sleeve (13).

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