A grain blocking door

Abstract

This application relates to a grain-blocking door, belonging to the field of grain-blocking doors; the grain-blocking door includes a door frame and two door panels rotatably disposed within the door frame; each of the two door panels has a locking groove; each locking groove has a mutually cooperating locking tooth; the locking tooth has a force-bearing inclined surface; a drive bar is slidably disposed vertically within the locking groove; the drive bar has a drive inclined surface; the drive inclined surface fits against the force-bearing inclined surface; a structural reinforcement unit is provided at the bottom of the door panel; this application has the technical effect of high sealing performance and effective prevention of grain leakage.

Description

Technical Field

[0001] This application relates to the technical field of grain-blocking gates, and in particular to a grain-blocking gate. Background Technology

[0002] In the grain storage sector, grain barriers, as core protective components of grain silos, play a crucial role in isolating grain piles, ensuring grain storage safety, and controlling the entry and exit of grain. Their locking reliability and smooth opening and closing directly affect grain storage safety and warehousing operational efficiency. Currently, most grain barriers on the market use traditional locking structures, which generally suffer from problems such as unstable locking and poor sealing performance.

[0003] Traditional grain gates rely on manual latches, bolts, and other components for locking. This is cumbersome and the locking force cannot adapt to changes in grain pressure. When grain accumulates inside the silo and generates significant lateral pressure, the gate may not fit properly, grain may leak through gaps, or the gate may even loosen or open unexpectedly. This seriously affects the airtightness of the grain silo and increases the risk of grain mold and loss.

[0004] Regarding the aforementioned technologies, the inventors believe that there are defects such as the grain-blocking door not fitting tightly and being prone to loosening. Summary of the Invention

[0005] To address the aforementioned technical problems, this application provides a grain-blocking gate.

[0006] This application provides a grain-blocking gate, which adopts the following technical solution: A grain-blocking gate includes a door frame and two door panels rotatably disposed within the door frame; each of the two door panels has a snap-fit ​​groove; each of the two snap-fit ​​grooves has a mutually cooperating snap tooth; the snap tooth has a force-bearing inclined surface; a drive bar is slidably disposed vertically within the snap-fit ​​groove; the drive bar has a drive inclined surface; the drive inclined surface is in contact with the force-bearing inclined surface; and a structural reinforcement unit is provided at the bottom of the door panel.

[0007] By adopting the above technical solution, the vertical movement of the drive bar is converted into the horizontal opening and closing movement of the locking teeth by the pressure cooperation between the inclined surfaces of the drive inclined surface and the force-bearing inclined surface of the locking teeth. After the two door panels are closed, the locking teeth can be locked, which effectively improves the sealing performance of the door panel closure, prevents the door panel from expanding and the grain from leaking due to grain compression, and the locking structure is simple.

[0008] Preferably, the structural reinforcement unit includes a first slider, a second slider, a support plate, a drive plate, and a lifting spring; the support plate is fixedly connected to the bottom of the door panel; a first groove is vertically formed along the upper edge of the door panel; a second groove is formed on the support plate; the first slider is slidably disposed in the first groove; the second slider is slidably disposed in the second groove; both ends of the drive plate are rotatably connected to the first slider and the second slider, respectively; the lifting spring is disposed between the bottom wall of the first slider and the support plate.

[0009] By adopting the above technical solution, when the grain is under pressure, the drive plate adaptively deflects and pushes the second slider to tighten and limit, forming a reverse support and triangular support structure, which can effectively decompose and offset the lateral pressure of the grain on the bottom of the door panel, and improve the overall pressure bearing capacity and structural stability of the door panel; after the grain is discharged and pressure is released, the lifting spring automatically rebounds and drives each component to reset, with a high degree of automation, which is suitable for the cyclic operation of grain storage and unloading in grain warehouses.

[0010] Preferably, a strip-shaped through hole is provided on the bottom wall of the first slide groove; a connector is slidably disposed vertically inside the strip-shaped through hole; one end of the connector is connected to the first slider, and the other end is connected to the drive bar.

[0011] By adopting the above technical solution, the mechanical linkage between the first slider and the drive bar is realized through the connector. The vertical pressure of the grain accumulation can be converted into the vertical displacement of the drive bar in real time, thereby adjusting the locking force of the locking teeth. This achieves an adaptive locking function where the greater the grain pressure, the tighter the lock, effectively preventing the door panel from expanding due to the lateral pressure of the grain and causing gaps and grain leakage, thus improving the airtight and seepage-proof performance of the grain warehouse.

[0012] Preferably, the first slider is provided with a first sealing plate; the first sealing plate is fitted to the inner wall of the door panel and covers the first sliding groove; the second slider is provided with a second sealing plate; the second sealing plate is fitted to the top wall of the support plate and covers the second sliding groove.

[0013] By adopting the above technical solution, a first sealing plate and a second sealing plate are respectively set on the first slider and the second slider. The sealing plate slides synchronously with the slider and can continuously and fully cover the first slide groove and the second slide groove. This can effectively prevent impurities such as grains, dust, and debris from entering the first slide groove and the second slide groove, avoid the sliding parts from jamming, sticking, wearing and blocking, and ensure the long-term flexible and smooth operation of the first slider and the second slider.

[0014] Preferably, the bottom wall of the support plate is provided with a receiving groove; a sealing airbag is provided in the receiving groove; an air supply unit is provided on the door panel; the air supply unit is connected to the sealing airbag.

[0015] By adopting the above technical solution, a sealing airbag is set at the bottom of the support plate to address the uneven working conditions of the grain warehouse floor. This airbag can adaptively conform to the shape of the ground, fill and seal the gap between the support plate and the ground, prevent grain grains and debris from seeping into the gap and accumulating, and improve the smoothness of the door opening and closing.

[0016] Preferably, the air supply unit includes an air supply housing and a piston; the air supply housing is disposed at the bottom of the door panel; the piston is slidably disposed vertically within the air supply housing; an air outlet is provided at the bottom of the air supply housing; the air outlet is connected to the sealing airbag via an air pipe.

[0017] Preferably, the air supply unit further includes a piston rod; the bottom end of the piston rod is connected to the piston; the top end of the piston rod passes through the air supply housing and is connected to the bottom wall of the drive bar.

[0018] By adopting the above technical solution, the mechanical displacement generated by grain storage drives the drive bar to move downward, and drives the piston rod and piston to move, compressing the gas in the gas supply shell and filling the sealed air bladder; after grain discharge, the drive bar moves upward, and drives the piston rod and piston upward, drawing gas from the sealed air bladder, causing the sealed air bladder to contract, and automatically completing the inflation and deflation of the air bladder.

[0019] Preferably, the top of the air supply housing is provided with a first air port and a second air port; a one-way valve is provided in the first air port; the first air port is connected to the outside; an air jet is provided on the bottom wall of the support plate; and a valve unit is connected between the second air port and the air jet.

[0020] By adopting the above technical solution, and by installing a one-way valve in the first air inlet, only clean outside air is allowed to enter the air supply shell in one direction, which can effectively isolate the dirty gas mixed with dust, grain scraps and debris in the gaps of the grain warehouse floor.

[0021] Preferably, the valve unit includes an adapter seat and a slide rod; the adapter seat is disposed on the support plate; the adapter seat has an adapter hole; both ends of the adapter hole are respectively connected to the jet nozzle and the first air port; the adapter seat has a sliding hole communicating with the adapter hole; the slide rod is slidably disposed in the sliding hole; the top end of the slide rod is connected to the first slider; and the slide rod has a connecting hole.

[0022] By adopting the above technical solution, during grain storage operations, the sliding rod moves down to block the transfer hole, cutting off the connection between the jet nozzle and the second air port, reducing the backflow of polluted airflow into the air supply shell; during grain discharge, the piston moves upward to draw back the gas from the air bladder and continuously accumulate high-pressure gas; after the sliding rod returns to its original position, the connecting hole on the sliding rod connects to the transfer hole, and the high-pressure air stored in the air supply shell is injected at high speed through the second air port, the transfer hole, and the jet nozzle to the gap between the support plate and the ground. The high-speed airflow can powerfully blow away the fine grains, dust, debris, and other impurities remaining in the gap, actively cleaning the narrow gaps where dirt easily accumulates, achieving automatic cleaning of the gaps, and making the door panel open and close more smoothly.

[0023] Preferably, the drive bar has a T-shaped groove; the locking tooth is provided with a T-shaped slider; the T-shaped slider is slidably disposed in the T-shaped groove.

[0024] By adopting the above technical solution, and with the limiting sliding cooperation of the T-shaped slider and the T-shaped groove, it is possible to ensure that the tooth and the drive bar are in close contact and transmission, and to stably pull the tooth back when the drive bar moves upward, so as to prevent the tooth from deviating or getting stuck, thereby improving the stability and guiding accuracy of the tooth movement.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. By sliding the drive bar vertically, the vertical motion is converted into the horizontal opening and closing motion of the locking teeth by the pressure cooperation between the inclined surfaces of the drive inclined surface and the force-bearing inclined surface of the locking teeth. After the two door panels are closed, the locking teeth can be engaged and locked, which effectively improves the sealing performance of the door panel closure, prevents the door panel from expanding and causing gaps due to grain compression, and the locking structure is simple.

[0026] 2. The mechanical linkage between the first slider and the drive bar is achieved through the connecting parts, which can convert the vertical pressure of the grain accumulation into the vertical displacement of the drive bar in real time, thereby adjusting the locking force of the locking teeth and realizing the adaptive locking function that the greater the grain pressure, the tighter the lock. This effectively prevents the door panel from expanding open due to the lateral pressure of the grain and causing gaps and grain leakage, thus improving the airtight and seepage-proof performance of the grain silo.

[0027] 3. To address the unevenness of the grain storage floor, a sealing airbag is installed at the bottom of the support plate. This airbag adapts to the surface shape, filling and sealing the gaps between the support plate and the ground, preventing grain particles and debris from seeping into and accumulating in the gaps, thus improving the smoothness of the door opening and closing. During grain storage operations, the sliding rod moves down to block the transfer hole, cutting off the connection between the air jet and the second air port, reducing the backflow of contaminated air into the air supply housing. During grain discharge, the piston moves upward to draw back the gas from the airbag and continuously accumulate high-pressure gas. After the sliding rod returns to its original position, the connecting hole on the sliding rod connects to the transfer hole, and the high-pressure air stored in the air supply housing is injected at high speed through the second air port, the transfer hole, and the air jet to the gap between the support plate and the ground. The high-speed airflow powerfully blows away residual fine grain particles, dust, debris, and other impurities in the gaps, actively cleaning narrow gaps that are prone to accumulating dirt, achieving automatic gap cleaning, and making the door opening and closing smoother. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the grain-blocking gate.

[0029] Figure 2 This is a schematic diagram of the internal structure of the snap-fit ​​groove in the embodiment.

[0030] Figure 3 This is a schematic diagram of the door panel in the embodiment.

[0031] Figure 4 This is a schematic diagram of the toothed structure in the embodiment.

[0032] Figure 5 This is a schematic diagram of the drive bar structure in the embodiment.

[0033] Figure 6 This is a schematic diagram of the internal structure of the door panel in the embodiment.

[0034] Figure 7 This is a schematic diagram of the structural reinforcement unit in the embodiment.

[0035] Figure 8 yes Figure 6 A magnified view of part A in the image.

[0036] Figure 9 yes Figure 6 A magnified view of part B in the image.

[0037] Figure 10 This is a schematic diagram of the gas supply unit in the embodiment.

[0038] Figure 11 yes Figure 10 A magnified view of part C.

[0039] Figure 12 This is a schematic diagram of the structure at the bottom of the support plate in the embodiment.

[0040] Figure 13 yes Figure 12 A magnified view of part of D.

[0041] Explanation of reference numerals in the attached figures: 1. Door frame; 2. Door panel; 21. Snap-fit ​​groove; 22. Snap-fit ​​tooth; 221. Force-bearing inclined surface; 222. T-shaped slider; 23. Drive bar; 231. Drive inclined surface; 232. T-shaped groove; 24. First groove; 241. Strip-shaped through hole; 2411. Connector; 3. Structural reinforcement unit; 31. First slider; 311. First sealing plate; 32. Second slider; 321. Second sealing plate; 33. Support plate; 331, second slide groove; 332, jet nozzle; 34, drive plate; 35, lifting spring; 4, sealing airbag; 5, air supply unit; 51, air supply housing; 511, air outlet; 512, first air port; 513, second air port; 52, piston; 53, piston rod; 6, valve unit; 61, adapter seat; 611, adapter hole; 612, sliding hole; 62, sliding rod; 621, connecting hole. Detailed Implementation

[0042] The following is in conjunction with the appendix Figure 1-13 This application will be described in further detail.

[0043] This application discloses a grain-blocking gate. (Refer to...) Figure 1-5 The system includes a door frame 1; two door panels 2 are symmetrically and rotatably arranged inside the door frame 1, which can realize opening and closing rotation to meet the needs of grain storage. The two door panels 2 have locking grooves 21 on their opposite sides; each locking groove 21 is equipped with a locking tooth 22 that can move laterally and retract; the two sets of locking teeth 22 can mesh with each other to lock and limit the two door panels 2 after they are closed; the locking tooth 22 has a force-bearing inclined surface 221; a T-shaped slider 222 is provided on the force-bearing inclined surface 221 of the locking tooth 22; a drive bar 23 is slidably arranged vertically inside the locking groove 21; the drive bar 23 has a drive inclined surface 231; the drive inclined surface 231 is in contact with the force-bearing inclined surface 221; a T-shaped groove 232 is provided on the drive inclined surface 231 of the drive bar 23; the T-shaped slider 222 is slidably arranged in the T-shaped groove 232.

[0044] When the two door panels 2 are interlocked, the two side teeth 22 are initially separated and not engaged. At this time, the two drive bars 23 slide down and move vertically downward along the locking groove 21. The drive inclined surface 231 moves down synchronously and continuously presses against the force-bearing inclined surface 221 of the teeth 22. Relying on the inclined pressure transmission action of the inclined surface, the vertical displacement of the drive bar 23 is converted into the lateral displacement of the teeth 22, which pushes the two side teeth 22 to move towards each other and precisely engage, thereby locking the closed door panel 2 and preventing the door panel 2 from gaps, loosening, or accidental opening due to the pressure of the grain inside the warehouse or the action of external forces, thus ensuring the airtightness of the grain warehouse. When the grain gate needs to be opened, the drive bar 23 moves vertically upward along the locking groove 21. Relying on the limiting and traction cooperation of the T-shaped sliding groove 232 and the T-shaped slider 222, the drive bar 23 will pull the locking teeth 22 to move horizontally in sync during the upward movement, thereby causing the two locking teeth 22 to move away from each other.

[0045] Reference Figures 6 to 9 A structural reinforcement unit 3 is provided at the bottom of the door panel 2. The structural reinforcement unit 3 includes a first slider 31, a second slider 32, a support plate 33, a drive plate 34, and a lifting spring 35. The support plate 33 is fixedly connected to the bottom of the door panel 2. The side of the door panel 2 facing the grain is the inner side, and the side facing away from the grain is the outer side. The support plate 33 is located on the inner side of the door panel 2 and is perpendicular to the door panel 2. A first sliding groove 24 is vertically opened along the upper edge of the door panel 2. A second sliding groove 331 is opened on the support plate 33. The first slider 31 is slidably disposed in the first sliding groove 24. A [missing information - likely a design element] is provided between the bottom wall of the first slider 31 and the support plate 33. A lifting spring 35 is provided; multiple lifting springs 35 can be provided; under normal conditions, the lifting spring 35 maintains a pushing state, continuously lifting the first slider 31 upward, so that the structural reinforcement unit 3 maintains its initial reset state; a strip-shaped through hole 241 is provided on the bottom wall of the first slide groove 24; a connector 2411 is slidably arranged vertically inside the strip-shaped through hole 241; one end of the connector 2411 is connected to the first slider 31, and the other end is connected to the drive bar 23; the second slider 32 is slidably arranged in the second slide groove 331; both ends of the drive plate 34 are rotatably connected to the first slider 31 and the second slider 32 respectively.

[0046] As grain gradually accumulates in the warehouse, the grain piles up and presses against the surface of the drive plate 34. The weight of the grain exerts a downward compressive load on the drive plate 34. As the amount of grain piled up increases, the pressure on the drive plate 34 continues to increase, overcoming the elastic pushing force of the lifting spring 35. This causes the first slider 31 to slide downward along the first slide groove 24, and simultaneously pulls the drive bar 23 downward through the connecting piece 2411, causing the drive bar 23 to displace vertically downward. The greater the amount of grain piled up and the higher the load, the longer the downward stroke of the first slider 31. The downward distance of the drive bar 23 increases synchronously, and the compressive force of the drive inclined surface 231 on the force-bearing inclined surface 221 of the locking teeth 22 on the drive bar 23 increases synchronously. The biting and locking force of the locking teeth 22 on both sides increases accordingly, forming an adaptive locking effect where the greater the grain load, the stronger the locking force of the door panel 2, preventing the door from being damaged by the grain pressure. Gaps, expansion, and leakage problems occurred at the joint of plate 2; while the first slider 31 moved down, the drive plate 34 rotated adaptively, simultaneously pushing the second slider 32 to slide along the second slide groove 331 towards the inside of the grain silo; when the second slider 32 pressed tightly against the side wall of the second slide groove 331 near the inside of the silo, the second slider 32 reached its travel limit, and the first slider 31, drive plate 34, and second slider 32 stopped moving as a whole; at this time, the second slider 32 formed a reverse supporting force on the inner wall of the second slide groove 331, and this force acted in the opposite direction on the support plate 33 and the bottom of the door plate 2, offsetting some of the outward lateral pressure of the grain; at the same time, the inclined drive plate 34 formed a triangular support structure, forming an oblique rigid support for the bottom of the door plate 2, greatly reducing the concentrated pressure of the bottom of the grain pile on the bottom of the door plate 2, and improving the overall structural strength of the grain blocking door.

[0047] As the grain in the storage compartment is gradually discharged, the grain load above the drive plate 34 continues to decrease, and the external pressure dissipates. The elastic potential energy of the lifting spring 35 is released, pushing the first slider 31 upward along the first slide groove 24 to reset. Through the connecting piece 2411, the drive bar 23 moves upward synchronously, releasing the high-intensity pressure lock of the locking tooth 22 and preparing for the next grain storage operation cycle.

[0048] The inner side wall of the door panel 2 is called the inner wall of the door panel 2; the outer side wall of the door panel 2 is called the outer wall of the door panel 2; a first sealing plate 311 is provided on the first slider 31; the first sealing plate 311 is attached to the inner wall of the door panel 2 and covers the first sliding groove 24; a second sealing plate 321 is provided on the second slider 32; the second sealing plate 321 is attached to the top wall of the support plate 33 and covers the second sliding groove 331; the two sealing plates slide synchronously with the corresponding sliders, always maintaining a closed shielding of the first sliding groove 24 and the second sliding groove 331, which can effectively prevent grain particles, dust and debris from entering the interior of the first sliding groove 24 and the second sliding groove 331.

[0049] Grain warehouse floors generally have uneven structures such as pits and bumps, causing gaps to form between the support plate 33 fixed to the bottom inner side of the door panel 2 and the ground. During the grain storage and stacking process, small grains and debris can easily seep into these gaps. After the grain in the warehouse is completely discharged, the grain remaining in the gaps will act as a barrier, hindering the normal rotation and opening of the door panel 2, thus affecting its use. Therefore, referring to... Figures 9 to 13 A receiving groove is provided on the bottom wall of the support plate 33; a sealing airbag 4 is provided in the receiving groove; the sealing airbag 4 is made of rubber; an air supply unit 5 is provided on the door panel 2; the air supply unit 5 is connected to the sealing airbag 4; specifically, the air supply unit 5 includes an air supply housing 51, a piston 52 and a piston rod 52; the air supply housing 51 is located at the bottom of the door panel 2; the piston 52 is slidably located in the air supply housing 51; the bottom end of the piston rod 52 is fixedly connected to the piston 52; the top end of the piston rod 52 passes through the air supply housing 51 and is fixedly connected to the bottom wall of the drive bar 23; an air outlet 511 is provided at the bottom of the air supply housing 51; the air outlet 511 is connected to the sealing airbag 4 at the bottom of the support plate 33 via an air pipe, forming a complete sealed air passage structure.

[0050] When grain is stored in the warehouse and the grain pressure increases, the grain compression drive plate 34 drives the drive bar 23 to slide downwards. The downward-moving drive bar 23 simultaneously presses down the piston rod 52, which drives the piston 52 to move vertically downwards along the inside of the air supply housing 51, compressing the air in the sealed cavity at the bottom of the air supply housing 51. The compressed gas is continuously injected into the sealing airbag 4 through the bottom air outlet 511 and the air delivery pipe, causing the sealing airbag 4 to gradually inflate and expand. The expanded sealing airbag 4 adapts to the uneven ground, thereby filling and sealing the gap between the support plate 33 and the ground, preventing grain particles and impurities from falling into the gap from the source, and avoiding the problem of residual grain getting stuck in the door panel 2.

[0051] After the grain is discharged from the silo, the grain load on the drive plate 34 disappears, and the lifting spring 35 pushes the first slider 31 to move upward and reset, thereby driving the drive bar 23 to slide upward. When the drive bar 23 moves upward, it pulls the piston rod 52 to move upward synchronously with the piston 52. The internal cavity volume of the air supply housing 51 increases and the air pressure decreases. The gas inside the sealing airbag 4 flows back and depressurizes. The airbag contracts and retracts, releasing the filling and sealing of the gap between the ground, ensuring that the grain gate can rotate and open smoothly.

[0052] Reference Figure 11A first air port 512 and a second air port 513 are provided on the top of the air supply housing 51; a one-way valve is provided in the first air port 512; the first air port 512 is connected to the outside; an air jet port 332 is provided on the bottom wall of the support plate 33; a valve unit 6 is connected between the second air port 513 and the air jet port 332; the valve unit 6 includes an adapter seat 61 and a slide rod 62; the adapter seat 61 is provided on the support plate 33; an adapter hole 611 is provided in the adapter seat 61; the two ends of the adapter hole 611 are respectively connected to the air jet port 332 and the second air port 513; a sliding hole 612 is provided in the adapter seat 61 and is connected to the adapter hole 611; the slide rod 62 is slidably disposed in the sliding hole 612; the top end of the slide rod 62 is connected to the first slider 31; a connecting hole 621 is provided on the slide rod 62.

[0053] Initially, the connecting hole 621 is connected to the adapter hole 611. When the first slider 31 moves downward, the slide rod 62 and the piston 52 move downward synchronously, and the connecting hole 621 is misaligned with the jet port 332 and the second air port 513, cutting off the air passage between the second air port 513 and the jet port 332. At the same time, the first slider 31 moves downward and pulls the drive bar 23 downward through the connector 2411. The drive bar 23 presses down the piston 52 through the piston rod 52, and the piston 52 is inside the air supply housing 51. The cavity space is compressed downwards; at this time, the adapter hole 611 is blocked, and the dirty airflow on the side of the jet nozzle 332 cannot rise. Outside air can only enter the air supply housing 51 in one direction through the first air port 512 with a one-way valve. The one-way valve only allows clean outside air to enter inward, thereby preventing dirty air mixed with dust and grain debris in the ground gap from flowing back into the air supply housing 51 through the jet nozzle 332, adapter hole 611, and second air port 513, ensuring the cleanliness of the air supply unit 5 and smooth movement.

[0054] As the grain in the silo is gradually discharged, the grain pressure on the drive plate 34 continues to decrease. The lifting spring 35 rebounds and pushes the first slider 31 upward. The slide rod 62 moves upward synchronously with the first slider 31. Before it is fully reset, the slide rod 62 always maintains the state of blocking the transition hole 611, and the second air port 513 and the air jet port 332 remain closed. The drive bar 23 moves upward synchronously with the first slider 31. The piston 52 is pulled upward by the piston rod 52, and the volume of the lower cavity of the air supply housing 51 expands to form a negative pressure. This causes the gas in the sealing airbag 4 to be drawn back into the air supply housing 51 along the air pipe and the air outlet 511. Because the one-way valve of the first air port 512 is locked in the reverse direction, the air in the housing cannot be discharged from the first air port 512. The compressed air pressure continues to accumulate in the housing, completing the sealed air storage. At the same time, the sealing airbag 4 gradually contracts, and the gap between the support plate 33 and the ground is slowly revealed. After the first slider 31 is reset, the slide rod 62 slides synchronously to its limit stroke, and the connecting hole 621 connects with the adapter hole 611; thus connecting the second air port 513, the adapter hole 611, and the jet nozzle 332 at the bottom of the support plate 33. The high-pressure airflow stored in the air supply housing 51 is then sprayed at high speed through the second air port 513, the connected adapter hole 611, and the jet nozzle 332 towards the gap area between the support plate 33 and the ground; the high-pressure airflow can powerfully blow away the fine grains, dust, and debris remaining in the gap, cleaning and expelling impurities from the gap, achieving the dual effect of sealing protection and automatic unblocking.

[0055] The working principle of a grain-blocking gate in this application is as follows: After the two door panels 2 are closed, they slide vertically using the drive bar 23. Through the cooperation of the drive inclined surface 231 and the force-bearing inclined surface 221 of the locking teeth 22, combined with the linkage of the T-shaped slider 222 and the T-shaped groove 232, the downward drive bar 23 can push the locking teeth 22 on both sides to engage and lock the door panel 2, while the upward drive bar 23 pulls the locking teeth 22 to separate, achieving the locking and unlocking effect of the door panel 2. The bottom of the door panel 2 is provided with a structural reinforcement unit 3. When storing grain, the heavy pressure of the grain on the drive plate 34 drives the first slider 31 to move downward against the elastic force of the lifting spring 35. The drive bar 23 moves downward through the connecting piece 2411. The greater the grain pressure, the stronger the locking force of the locking teeth 22, achieving adaptive locking. At the same time, the drive plate 34 pushes the second slider 32 to support the support plate 33, forming an oblique support, dispersing the grain side pressure, and strengthening the bottom structural strength of the door panel 2. When discharging grain, the lifting spring 35 pushes the first slider 31 to reset, the drive bar 23 moves upward, and the locking structure is released. The first sealing plate 311 and the second sealing plate 321 slide synchronously with the slider, continuously blocking the first slide groove 24 and the second slide groove 331 to prevent grain impurities from entering and causing jamming.

[0056] The gap between the bottom support plate 33 of the door panel 2 and the ground is sealed by the air supply unit 5 in conjunction with the sealing airbag 4: the drive bar 23 moves down and drives the piston 52 to press down, inflating the sealing airbag 4 to fill the gap in the ground and prevent grain from seeping in; when discharging grain, the piston 52 moves up, the airbag is deflated and contracts, and the gap is unsealed.

[0057] The air supply housing 51 is equipped with a first air port 512 and a second air port 513 with one-way valves, and a valve unit 6 consisting of a slide rod 62 and an adapter seat 61. During the grain storage and lowering stage, the slide rod 62 blocks the adapter hole 611, allowing only clean air from the outside to enter in one direction, thus preventing dust and grain debris from contaminating the air supply structure. During the grain discharge and resetting process, the slide rod 62 closes the air passage before it is fully reset, and the piston 52 draws back the gas from the air bag and stores high-pressure gas in the air supply housing 51. After the first slider 31 is fully reset, the slide rod 62 opens the adapter hole 611, and the high-pressure gas in the housing is ejected at high speed through the jet nozzle 332, blowing away residual debris in the ground gap and ensuring smooth opening and closing of the door panel 2.

[0058] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A grain-blocking gate, characterized in that: The system includes a door frame (1) and two door panels (2) rotatably disposed within the door frame (1); each of the two door panels (2) has a snap-fit ​​groove (21); each of the two snap-fit ​​grooves (21) has a mutually cooperating snap tooth (22); each snap tooth (22) has a force-bearing inclined surface (221); a drive bar (23) is slidably disposed vertically within the snap-fit ​​groove (21); the drive bar (23) has a drive inclined surface (231); the drive inclined surface (231) is in contact with the force-bearing inclined surface (221); and a structural reinforcement unit (3) is disposed at the bottom of the door panel (2).

2. A grain-blocking gate according to claim 1, characterized in that: The structural reinforcement unit (3) includes a first slider (31), a second slider (32), a support plate (33), a drive plate (34), and a lifting spring (35); the support plate (33) is fixedly connected to the bottom of the door panel (2); the door panel (2) has a first groove (24) vertically opened on its upper edge; the support plate (33) has a second groove (331) opened on its upper edge; the first slider (31) is slidably disposed in the first groove (24); the second slider (32) is slidably disposed in the second groove (331); the two ends of the drive plate (34) are rotatably connected to the first slider (31) and the second slider (32) respectively; the lifting spring (35) is disposed between the bottom wall of the first slider (31) and the support plate (33).

3. A grain-blocking gate according to claim 2, characterized in that: A strip-shaped through hole (241) is provided on the bottom wall of the first slide groove (24); a connector (2411) is slidably arranged in the strip-shaped through hole (241) along the vertical direction; one end of the connector (2411) is connected to the first slider (31), and the other end is connected to the drive bar (23).

4. A grain door according to claim 2, wherein: The first slider (31) is provided with a first sealing plate (311); the first sealing plate (311) is in contact with the inner wall of the door panel (2) and covers the first sliding groove (24); the second slider (32) is provided with a second sealing plate (321); the second sealing plate (321) is in contact with the top wall of the support plate (33) and covers the second sliding groove (331).

5. A grain-blocking gate according to claim 2, characterized in that: The bottom wall of the support plate (33) is provided with a receiving groove; a sealing airbag (4) is provided in the receiving groove; an air supply unit (5) is provided on the door panel (2); the air supply unit (5) is connected to the sealing airbag (4).

6. A grain door according to claim 5, wherein: The air supply unit (5) includes an air supply housing (51) and a piston (52); the air supply housing (51) is disposed at the bottom of the door panel (2); the piston (52) is slidably disposed in the air supply housing (51) in a vertical direction; an air outlet (511) is provided at the bottom of the air supply housing (51); the air outlet (511) is connected to the sealing airbag (4) through an air pipe.

7. A grain door according to claim 6, wherein: The air supply unit (5) also includes a piston (52) rod; the bottom end of the piston (52) rod is connected to the piston (52); the top end of the piston (52) rod passes through the air supply housing (51) and is connected to the bottom wall of the drive bar (23).

8. A grain door according to claim 6, wherein: The top of the air supply housing (51) is provided with a first air port (512) and a second air port (513); a one-way valve is provided in the first air port (512); the first air port (512) is connected to the outside; a jet nozzle (332) is provided on the bottom wall of the support plate (33); a valve unit (6) is connected between the second air port (513) and the jet nozzle (332).

9. A grain-blocking gate according to claim 8, characterized in that: The valve unit (6) includes an adapter (61) and a slide rod (62); the adapter (61) is disposed on the support plate (33); an adapter hole (611) is provided in the adapter (61); the two ends of the adapter hole (611) are respectively connected to the jet port (332) and the first air port (512); a sliding hole (612) is provided in the adapter (61) and communicates with the adapter hole (611); the slide rod (62) is slidably disposed in the sliding hole (612); the top end of the slide rod (62) is connected to the first slider (31); a connecting hole (621) is provided on the slide rod (62).

10. A grain-blocking gate according to claim 1, characterized in that: The drive bar (23) is provided with a T-shaped groove (232); the tooth (22) is provided with a T-shaped slider (222); the T-shaped slider (222) is slidably disposed in the T-shaped groove (232).

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