Nitrogen charging device for preserving coarse cereals

Abstract

The utility model discloses a nitrogen charging device for fresh keeping of coarse cereals, and relates to the technical field of fresh keeping of coarse cereals, in particular to a nitrogen charging device for fresh keeping of coarse cereals, which comprises a workbench and a nitrogen tank, a first support frame and a second support frame are arranged at the top of the workbench, a first through hole is formed in the right inner side wall of the first support frame, and a second through hole is formed in the right inner side wall of the second support frame; a rotating shaft matched with the inner diameter of the first through hole is arranged in the first through hole, and the outer surface of the rotating shaft is sleeved with a first bevel gear. According to the nitrogen charging device for preserving the coarse cereals, through the arrangement of a rotating shaft, a first bevel gear, a first lead screw, a second bevel gear, a baffle, a controller, a second electric telescopic rod, a sleeve, an inflation pipe and an exhaust pipe, the nitrogen charging device for preserving the coarse cereals has the beneficial effects that the height of the baffle can be adjusted according to the size of a packaging bag; and when the height of the baffle is adjusted, the height of the inflation pipe and the height of the exhaust pipe can be conveniently adjusted at the same time.

Description

Technical Field

[0001] This utility model relates to the field of grain preservation technology, specifically a nitrogen filling device for grain preservation. Background Technology

[0002] Whole grains are rich in nutrients, making them a favorite food source for pests. Pest infestation leads to weight loss and quality decline in whole grains, and can also spread pathogens. During storage, high humidity increases the water activity in whole grains, creating conditions conducive to the growth of mold and other microorganisms, causing them to mold and spoil. Traditional low-temperature preservation requires a large amount of energy to maintain the low-temperature environment, resulting in high costs. Furthermore, the construction and operation costs of low-temperature facilities are prohibitive for large-scale grain storage. At the same time, low temperatures cannot completely prevent quality changes in whole grains.

[0003] An existing nitrogen filling device for preserving grains has several drawbacks. Firstly, it is difficult to adjust the nitrogen filling process according to the size and shape of the packaging bag to prevent the grains from overflowing from the unsealed end. Secondly, the filling process is inefficient, taking a long time to fill the nitrogen from the unsealed end to the bottom of the bag, which can easily lead to nitrogen escaping from the unsealed end. A new nitrogen filling device for preserving grains addresses these problems. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a nitrogen-filling device for preserving grains, which solves the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: A nitrogen filling device for preserving grains includes a workbench and a nitrogen tank. The top of the workbench is provided with a first support frame and a second support frame. The right inner side wall of the first support frame has a first through hole. A rotating shaft adapted to the inner diameter of the first through hole is provided in the first through hole. A first bevel gear is sleeved on the outer surface of the rotating shaft. The interior of the left and right walls of the first support frame is rotatably connected to a first lead screw through bearings. A second bevel gear is provided on the top of the first lead screw. A baffle is connected to the outer surface of the first lead screw. The inner top wall of the second support frame is provided with a first electric telescopic rod. A heating plate is provided at the movable end of the first electric telescopic rod. The top of the workbench is provided with a first protective box and a vacuum pump. The top of the first protective box is provided with a controller. A suction pipe is sleeved on the suction end of the vacuum pump. A groove is provided inside the workbench. A second electric telescopic rod is placed in the groove. A sleeve is provided on the top of the second electric telescopic rod. A hose is sleeved on the outlet end of the nitrogen tank. An inflation pipe is provided at the other end of the hose. A control valve is provided on the top of the nitrogen tank.

[0008] Optionally, a first slot is provided inside the bottom wall of the first support frame, and the baffle is engaged in the first slot.

[0009] Optionally, a sensor is provided at the bottom of the top wall of the first support frame, a support plate is provided on the rear side of the first support frame, a third electric telescopic rod is provided on the bottom wall of the support plate, and a pressing plate is provided at the movable end of the third electric telescopic rod.

[0010] Optionally, the interior of the left and right walls of the second support frame is provided with a second slot, and the heating plate is engaged in the second slot.

[0011] Optionally, the front and rear walls of the first protective box are provided with first sliding grooves, and the inflation pipe and the exhaust pipe are both inserted into the first sliding grooves. There are two second electric telescopic rods and two sleeves, one sleeve is fitted onto the outer surface of the exhaust pipe, and the other sleeve is fitted onto the outer surface of the inflation pipe.

[0012] Optionally, a second protective box is provided at the bottom of the workbench, a motor is provided on the inner bottom wall of the second protective box, a second lead screw is provided at the output end of the motor, a first slider is connected to the outer surface of the second lead screw, a second slide groove is provided in the first slider, and a second slider is engaged in the second slide groove.

[0013] Optionally, the workbench has a third sliding groove inside, the first slider is engaged in the third sliding groove, the inner side wall of the workbench is provided with a guide rod, the first slider is sleeved on the outer surface of the guide rod, and the air tube is engaged in the second slider.

[0014] This utility model provides a nitrogen filling device for preserving grains, which has the following beneficial effects:

[0015] 1. The nitrogen filling device for preserving grains, through the arrangement of a rotating shaft, a first bevel gear, a first lead screw, a second bevel gear, a baffle, a controller, a second electric telescopic rod, a sleeve, an inflation pipe, and an exhaust pipe, enables the nitrogen filling device for preserving grains to adjust the height of the baffle according to the size of the packaging bag, so as to prevent the grains from spilling out from the unsealed end of the packaging bag. At the same time, the height of the inflation pipe and the exhaust pipe can be easily adjusted while adjusting the height of the baffle.

[0016] 2. The nitrogen filling device for preserving grains, through the arrangement of a motor, a second lead screw, a first slider, a second slider, a nitrogen tank, a hose, and a filling pipe, enables the nitrogen filling device for preserving grains to improve nitrogen filling efficiency and reduce nitrogen leakage. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the present utility model;

[0018] Figure 2 This is a structural schematic diagram of the front view of this utility model;

[0019] Figure 3 This is a structural schematic diagram of the front view of this utility model;

[0020] Figure 4 This is a structural schematic diagram of the side view of this utility model;

[0021] Figure 5 This is a structural schematic diagram of the side view of this utility model;

[0022] Figure 6 This is a top view structural diagram of the present invention.

[0023] In the diagram: 1. Workbench; 2. Nitrogen tank; 3. First support frame; 4. Second support frame; 5. Rotating shaft; 6. First bevel gear; 7. First lead screw; 8. Second bevel gear; 9. Baffle; 10. First electric telescopic rod; 11. Heating plate; 12. First protective box; 13. Vacuum pump; 14. Controller; 15. Evacuation pipe; 16. Second electric telescopic rod; 17. Sleeve; 18. Hose; 19. Inflation pipe; 20. Control valve; 21. Sensor; 22. Third electric telescopic rod; 23. Extrusion plate; 24. Motor; 25. Second lead screw; 26. First slider; 27. Second slider. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Example

[0026] Please see Figures 1 to 6This utility model provides a nitrogen filling device for preserving grains, including a workbench 1 and a nitrogen tank 2. A first support frame 3 and a second support frame 4 are provided on the top of the workbench 1. A first through hole is opened on the right inner side wall of the first support frame 3, and a rotating shaft 5 adapted to the inner diameter of the first through hole is provided in the first through hole. A first bevel gear 6 is sleeved on the outer surface of the rotating shaft 5. A first lead screw 7 is rotatably connected to the inside of the left and right walls of the first support frame 3 through bearings. A second bevel gear 8 is provided on the top of the first lead screw 7, and a baffle 9 is connected to the outer surface of the first lead screw 7. The inner top wall of the second support frame 4 is provided with... The workbench 1 is equipped with a first electric telescopic rod 10, the movable end of which is equipped with a heating plate 11. The top of the workbench 1 is equipped with a first protective box 12 and a vacuum pump 13. The top of the first protective box 12 is equipped with a controller 14. The vacuum pump 13 is fitted with a suction pipe 15. The workbench 1 has a groove inside, in which a second electric telescopic rod 16 is placed. The top of the second electric telescopic rod 16 is equipped with a sleeve 17. The outlet end of the nitrogen tank 2 is fitted with a flexible hose 18. The other end of the flexible hose 18 is equipped with an inflation pipe 19. The top of the nitrogen tank 2 is equipped with a control valve 20.

[0027] Specifically, the controller 14 can be an existing controller on the market, such as a Siemens S7-300 PLC controller or a programmable single-chip microcomputer controller. According to the initial intention and purpose of the implementation of the device, the controller 14 is programmed so that the controller 14 can control the working status of the motor 24, the first electric telescopic rod 10, the second electric telescopic rod 16 and the third electric telescopic rod 22, the control valve 20, the sensor 21 and the heating plate 11, so as to cooperate with each other to complete the corresponding control and operation in accordance with the implementation spirit of the scheme.

[0028] Please see Figures 1 to 2 The bottom wall of the first support frame 3 has a first slot, and the baffle 9 is engaged in the first slot.

[0029] Specifically, the first slot limits the baffle 9, allowing the baffle 9 to move up and down under the limitation of the first slot.

[0030] Please see Figures 1 to 2 A sensor 21 is provided at the bottom of the top wall of the first support frame 3, a support plate is provided at the rear side of the first support frame 3, a third electric telescopic rod 22 is provided at the bottom wall of the support plate, and a pressing plate 23 is provided at the movable end of the third electric telescopic rod 22.

[0031] Specifically, when the packaging bag is placed on the baffle 9, the sensor 21 transmits information to the controller 14, and the controller 14 activates the third electric telescopic rod 22. The movable end of the third electric telescopic rod 22 extends and pushes the extrusion plate 23 until the extrusion plate 23 comes into contact with the baffle 9.

[0032] Please see Figures 1 to 3The second support frame 4 has a second slot inside the left and right walls, and the heating plate 11 is snapped into the second slot.

[0033] Specifically, the second slot limits the heating plate 11, allowing the heating plate 11 to move upward or downward under the limitation of the second slot.

[0034] Please see Figures 4 to 5 The front and rear walls of the first protective box 12 are both provided with first sliding grooves. The inflation pipe 19 and the air extraction pipe 15 are both inserted into the first sliding grooves. There are two of each of the second electric telescopic rod 16 and sleeve 17. One sleeve 17 is fitted onto the outer surface of the air extraction pipe 15, and the other sleeve 17 is fitted onto the outer surface of the inflation pipe 19.

[0035] Specifically, the second electric telescopic rod 16 extends or retracts, driving the sleeve 17, which is equipped with an air extraction pipe 15 or an air inflation pipe 19 to move up and down along the first slide groove.

[0036] Please see Figures 4 to 5 The bottom of the workbench 1 is provided with a second protective box. The inner bottom wall of the second protective box is provided with a motor 24. The output end of the motor 24 is provided with a second lead screw 25. The outer surface of the second lead screw 25 is connected to a first slider 26. A second slide groove is opened in the first slider 26. A second slider 27 is engaged in the second slide groove.

[0037] Specifically, the motor 24 drives the second lead screw 25 to rotate, the second lead screw 25 drives the first slider 26 which is connected to the outer surface of the second lead screw 25, and the first slider 26 drives the second slider 27 to move back and forth. The second slider 27 can move up and down in the first slider 26 along the second slide groove.

[0038] Please see Figures 4 to 6 The workbench 1 has a third slide groove inside, the first slider 26 is engaged in the third slide groove, the inner side wall of the workbench 1 is provided with a guide rod, the first slider 26 is sleeved on the outer surface of the guide rod, and the air tube 19 is engaged in the second slider 27.

[0039] Specifically, driven by the second lead screw 25, the first slider 26, the second slider 27 and the air tube 19 move back and forth along the direction of the guide rod, and the guide rod and the third slide groove limit the first slider 26.

[0040] During nitrogen filling of the grains, if the packaging bag is large and contains a lot of grains, to prevent the grains from spilling out from the unsealed end, the rotating shaft 5 is rotated. The rotating shaft 5 drives the first bevel gear 6 to rotate, and the first bevel gear 6 meshes with the second bevel gear 8, causing the second bevel gear 8 to drive the first lead screw 7 to rotate. The first lead screw 7 then drives the baffle 9, which is connected to the outer surface of the first lead screw 7. The baffle 9 moves upward under the limit of the first slot until it reaches a suitable height. The baffle 9 can prevent the grains from spilling out from the unsealed end of the packaging bag. At the same time, the controller 14 activates the second electric telescopic rod 16. The movable end of the second electric telescopic rod 16 extends and pushes the sleeve 17, the inflation pipe 19, and the extraction pipe 15 upward until the inflation pipe 19 and the extraction pipe 15 are pushed to a suitable height. Then, the unsealed end of the packaging bag is placed on top of the baffle 9, and the inflation pipe 19 and the extraction pipe 15 are... A packaging bag is placed inside, and sensor 21 detects the presence of the bag and sends a signal to controller 14. Controller 14 then activates the third electric telescopic rod 22, which pushes the compression plate 23 downward. The compression plate 23 undergoes a certain elastic deformation, allowing it to compress the packaging bag and prevent air leakage. Subsequently, controller 14 activates the vacuum pump 13 and motor 24. The vacuum pump 13 extracts air from the packaging bag through the suction pipe 15. Simultaneously, the output of motor 24 drives the second lead screw 25 to rotate. The second lead screw 25 drives the first slider 26, the second slider 27, and the inflation pipe 19, which are connected to the outer surface of the second lead screw 25, causing the inflation pipe 19 to move forward to the appropriate position, thus inflating the bag. The tube 19 is inserted into the packaging bag, and then the motor 24 stops rotating. After the air in the packaging bag is extracted, the vacuum pump 13 stops working. The controller 14 starts the control valve 20 and the motor 24. The control valve 20 opens, and the nitrogen in the nitrogen tank 2 enters the packaging bag through the hose 18 and the inflation tube 19. The motor 24 drives the second lead screw 25 to rotate. The second lead screw 25 drives the first slider 26, the second slider 27 and the inflation tube 19, which are rotatably connected to the outer surface of the second lead screw 25. While the inflation tube 19 is filling the packaging bag with nitrogen, it moves quickly into the first protective box 12 to accelerate the nitrogen filling speed and improve the nitrogen filling efficiency. After the nitrogen filling is completed, the movable end of the first electric telescopic rod 10 extends and pushes the heating plate 11 downward to heat seal the packaging bag.

[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A nitrogen-filling device for preserving grains, comprising a workbench and a nitrogen tank, characterized in that: The workbench is equipped with a first support frame and a second support frame on its top. The right inner wall of the first support frame has a first through hole, in which a rotating shaft adapted to the inner diameter of the first through hole is installed. A first bevel gear is sleeved on the outer surface of the rotating shaft. The left and right walls of the first support frame are rotatably connected to a first lead screw via bearings. A second bevel gear is installed on the top of the first lead screw. A baffle is connected to the outer surface of the first lead screw. The inner top wall of the second support frame is equipped with a first electric telescopic rod. A heating plate is installed at the movable end of the first electric telescopic rod. The top of the workbench is equipped with a first protective box and a vacuum pump. A controller is installed on the top of the first protective box. A suction pipe is sleeved on the suction end of the vacuum pump. The workbench has a groove inside, in which a second electric telescopic rod is placed. A sleeve is installed on the top of the second electric telescopic rod. A hose is sleeved on the outlet end of the nitrogen tank. An inflation pipe is installed at the other end of the hose. A control valve is installed on the top of the nitrogen tank.

2. The nitrogen filling device for preserving grains according to claim 1, characterized in that: The bottom wall of the first support frame has a first slot, and the baffle is engaged in the first slot.

3. The nitrogen-filling device for preserving grains according to claim 1, characterized in that: A sensor is installed at the bottom of the top wall of the first support frame, a support plate is installed on the rear side of the first support frame, a third electric telescopic rod is installed on the bottom wall of the support plate, and a pressing plate is installed at the movable end of the third electric telescopic rod.

4. A nitrogen-filling device for preserving miscellaneous grains according to claim 1, characterized in that: The second support frame has a second slot inside the left and right walls, and the heating plate is engaged in the second slot.

5. A nitrogen-filling device for preserving grains according to claim 1, characterized in that: The front and rear walls of the first protective box are both provided with first sliding grooves. The inflation pipe and the exhaust pipe are both inserted into the first sliding grooves. There are two second electric telescopic rods and two sleeves. One sleeve is fitted onto the outer surface of the exhaust pipe, and the other sleeve is fitted onto the outer surface of the inflation pipe.

6. A nitrogen-filling device for preserving miscellaneous grains according to claim 1, characterized in that: The bottom of the workbench is provided with a second protective box, the inner bottom wall of the second protective box is provided with a motor, the output end of the motor is provided with a second lead screw, the outer surface of the second lead screw is connected to a first slider, the first slider is provided with a second slide groove, and the second slider is engaged in the second slide groove.

7. A nitrogen-filling device for preserving grains according to claim 1, characterized in that: The workbench has a third sliding groove inside, the first slider is engaged in the third sliding groove, the inner side wall of the workbench is provided with a guide rod, the first slider is sleeved on the outer surface of the guide rod, and the inflation tube is engaged in the second slider.

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