Nitrogen controlled atmosphere forced exhaust device
By designing a nitrogen gas intensity-regulating and discharge device including a servo motor, magnet, iron slider and multiple air intake holes, the problem of uneven air discharge in the prior art is solved, and the uniform distribution of nitrogen in the granary and the rapid discharge of air are achieved.
Patent Information
- Application Number
- CN202420471051.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-12
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-03-12
AI Technical Summary
When the existing strong discharge device exhausts the air at the bottom of the granary, the suction port is fixed in one position, resulting in uneven air discharge and air residues in some areas, affecting the nitrogen concentration.
A nitrogen gas intensity-regulating and discharge device is designed, including exhaust external unit, air conduit, first branch tube, iron slide, slide, servo motor and other components. The servo motor drives the movement of magnets and iron slide, and combines the setting of multiple air intake holes to achieve uniform discharge of air at the bottom of the granary.
Through the use of this device, residual air at the bottom of the granary can be evenly discharged, so that nitrogen can be evenly distributed in the inner space of the granary, avoiding air residues and improving the uniformity of nitrogen concentration.
Smart Images
Figure CN222603118U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of indoor exhaust, in particular to a nitrogen gas regulating strong exhaust device. Background Art
[0002] A granary refers to a special building used to store large amounts of grain. It is mainly used to store grain. During the storage process of grain, there will be insects, bacteria, etc. that affect the quality of the stored grain. Therefore, nitrogen gas conditioning is required to kill insects, prevent insects, and inhibit bacteria.
[0003] Nitrogen gas conditioning refers to filling a closed granary with nitrogen. Since nitrogen is lighter than air, it will float to the upper space in the granary after entering the granary. At this time, a forced exhaust device is needed to exhaust the air gathered in the lower space of the granary. As the nitrogen content in the granary increases, the nitrogen will penetrate into the gaps between the grains, kill and prevent insects in the grain pile, and inhibit the growth of bacteria. Multiple detection devices installed in the granary are used to detect whether the nitrogen concentration in various parts of the granary meets the standard. After the nitrogen concentration meets the standard, the forced exhaust device is closed to keep the granary sealed. However, when the existing forced exhaust device exhausts the air at the bottom of the granary, its air intake is fixed in one position, and then it can only absorb the gas in a part of the area during exhaust, and then gradually exhaust the residual air through the flow of gas in the granary. However, this exhaust method easily leads to uneven exhaust of the air in the granary, which leads to residual air in some areas, thereby affecting the nitrogen concentration after the granary is closed.
[0004] To this end, the utility model provides a nitrogen gas-regulated forced exhaust device. Utility Model Content
[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.
[0006] The technical solution adopted by the utility model to solve its technical problems is as follows: the nitrogen gas regulating and strong exhaust device described in the utility model comprises an exhaust outer machine; the side wall of the exhaust outer machine is connected with an air guide pipe; the middle part of the air guide pipe is connected with a plurality of first branch pipes; the middle part of the first branch pipe is slidably connected with an iron slide cylinder; the middle part of the iron slide cylinder is provided with a plurality of ventilation grooves; the middle part of the iron slide cylinder is fixedly connected with a limit block; the top of the first branch pipe is slidably connected with a slide seat; the inner side wall of the slide seat is fixedly connected with a fixing plate; the bottom of the fixing plate is fixedly connected with an electric cylinder; the output end of the electric cylinder is fixedly connected with a magnet; the outer side wall of the slide seat is fixedly connected with a servo The servo motor; the output end of the servo motor passes through the side wall of the slide; the output end of the servo motor is fixedly connected to a roller; the roller is located inside the slide, and the roller is in rolling cooperation with the top of the first branch pipe; a vent is provided on the top of the slide; through the above structure, the residual air at the bottom of the granary can be gradually discharged, so that the nitrogen can be evenly distributed in the internal space of the granary, and at the same time, only one air inlet is retained to ensure the suction force, so that the air-inhaled area can be quickly exhausted, and the situation that the uneven suction of multiple air inlets causes some areas to be exhausted while some areas have more air residue is prevented.
[0007] Preferably, the top of the slide is rotatably connected to a rotating cylinder; the rotating cylinder is connected to the slide through a vent hole; the side wall of the rotating cylinder is connected to a pair of second branch pipes; a plurality of air inlet holes are opened in the middle of the second branch pipes, and the plurality of air inlet holes are arranged facing the bottom of the first branch pipe; through the above structure, when the gas at the bottom of the granary is discharged, the suction range can be increased, so that the air at the bottom of the granary can be discharged more evenly, further reducing the residual air at the bottom of the granary.
[0008] Preferably, a rotating motor is fixedly connected to the top of the fixed plate; a plurality of connecting rods are fixedly connected to the output end of the rotating motor; the other ends of the plurality of connecting rods are fixedly connected to the inner wall of the rotating cylinder; through the above structure, the air intake range of the air inlet can be further improved, and the air residue at the bottom of your granary can be further increased.
[0009] Preferably, a plurality of round balls are fixed to the top of the slide seat; the top of the round balls contacts the bottom of the rotating cylinder; through the above structure, the friction between the rotating cylinder and the slide seat can be reduced, thereby reducing the load on the rotating motor, improving the service life of the rotating motor, and making the rotation of the second branch pipe smoother.
[0010] Preferably, the second branch pipe is made of flexible material; a spring is fixedly connected to the inner side of the second branch pipe; the end of the spring is fixedly connected to the middle part of the rotating cylinder; through the above structure, the influence of the rotation of the second branch pipe on the grain storage rack can be reduced.
[0011] Preferably, a blocking net is fixedly connected to the middle of the air inlet; the blocking net has the same shape as the air inlet; through the above structure, the exhaust passage can be prevented from being blocked by debris.
[0012] The beneficial effects of the utility model are as follows:
[0013] 1. The utility model discloses a nitrogen gas regulating and strong exhaust device, which starts a servo motor to drive the magnet to move to the top of an iron slide cylinder, and then starts the electric cylinder to drive the magnet and the iron slide cylinder to rise, so that multiple ventilation grooves leak out of the top of the first branch pipe. At this time, part of the air at the bottom of the granary will be extracted and discharged, and then the electric cylinder is started again to lift the magnet, so that the iron slide cylinder is separated from the adsorption and falls back into the first branch pipe. Through the above structure, the residual air at the bottom of the granary can be gradually discharged, so that the nitrogen can be evenly distributed in the internal space of the granary, and at the same time, only one air inlet is retained to ensure the suction force, so that the inhaled area can be quickly exhausted, and the situation that the uneven suction of multiple air inlets causes some areas to be exhausted while some areas have more air residue can be prevented.
[0014] 2. The nitrogen gas-regulated forced exhaust device described in the utility model sucks in and discharges the gas at the bottom of the granary through multiple air inlet holes. The arrangement of multiple air inlet holes can enable the air between multiple first branch pipes to be sucked away more evenly. Through the above structure, when discharging the gas at the bottom of the granary, the suction range can be increased, so that the air at the bottom of the granary can be discharged more evenly, further reducing the residual air at the bottom of the granary. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The utility model will be further described below in conjunction with the accompanying drawings.
[0016] Figure 1 It is a three-dimensional diagram of the utility model;
[0017] Figure 2 It is a structural schematic diagram of the slide seat in the utility model;
[0018] Figure 3 It is a structural schematic diagram of the iron slide cylinder in the utility model;
[0019] Figure 4 It is a structural schematic diagram of the second branch pipe in the utility model;
[0020] In the figure: 1. Exhaust unit; 12. Air guide pipe; 13. First branch pipe; 14. Iron slide cylinder; 15. Ventilation groove; 16. Limit block; 17. Slide seat; 18. Fixing plate; 19. Electric cylinder; 110. Magnet; 111. Servo motor; 112. Roller; 113. Ventilation hole; 2. Rotating cylinder; 21. Second branch pipe; 22. Air inlet hole; 3. Rotating motor; 31. Connecting rod; 4. Ball; 5. Spring; 6. Barrier net; 7. Rubber pad. DETAILED DESCRIPTION
[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.
[0022] like Figures 1 to 3 As shown, a nitrogen gas regulating and strong exhaust device described in an embodiment of the utility model comprises an exhaust outer machine 1; the side wall of the exhaust outer machine 1 is connected with an air guide pipe 12; the middle of the air guide pipe 12 is connected with a plurality of first branch pipes 13; the middle of the first branch pipe 13 is slidably connected with an iron slide cylinder 14; the middle of the iron slide cylinder 14 is provided with a plurality of ventilation grooves 15; the middle of the iron slide cylinder 14 is fixedly connected with a limiting block 16; the top of the first branch pipe 13 is slidably connected with a slide seat 17; the inner wall of the slide seat 17 is fixedly connected with a limit block 16; A fixing plate 18 is connected; an electric cylinder 19 is fixedly connected to the bottom of the fixing plate 18; a magnet 110 is fixedly connected to the output end of the electric cylinder 19; a servo motor 111 is fixedly connected to the outer wall of the slide 17; the output end of the servo motor 111 passes through the side wall of the slide 17; a roller 112 is fixedly connected to the output end of the servo motor 111; the roller 112 is located inside the slide 17, and the roller 112 is in rolling cooperation with the top of the first branch pipe 13; a vent hole 113 is opened on the top of the slide 17.
[0023] like Figures 1 to 4 As shown, the top of the slide 17 is rotatably connected to the rotating cylinder 2; the rotating cylinder 2 is connected to the slide 17 through the vent hole 113; the side wall of the rotating cylinder 2 is connected to a pair of second branch pipes 21; a plurality of air inlet holes 22 are opened in the middle of the second branch pipe 21, and the plurality of air inlet holes 22 are arranged facing the bottom of the first branch pipe 13.
[0024] like Figures 1 to 4 As shown, a rotating motor 3 is fixedly connected to the top of the fixing plate 18 ; a plurality of connecting rods 31 are fixedly connected to the output end of the rotating motor 3 ; and the other ends of the plurality of connecting rods 31 are fixedly connected to the inner wall of the rotating cylinder 2 .
[0025] like Figures 1 to 3 As shown, a plurality of balls 4 are fixedly connected to the top of the slide seat 17 ; the tops of the balls 4 are in contact with the bottom of the rotating cylinder 2 .
[0026] like Figures 1 to 4 As shown, the second branch pipe 21 is made of flexible material; a spring 5 is fixedly connected to the inner side of the second branch pipe 21 ; and the end of the spring 5 is fixedly connected to the middle of the rotating cylinder 2 .
[0027] like Figures 1 to 4 As shown, a blocking net 6 is fixedly connected to the middle of the air inlet 22; the blocking net 6 has the same shape as the air inlet 22.
[0028] like Figure 2 As shown, a plurality of rubber pads 7 are fixedly connected to the bottom of the first branch pipe 13 ; the plurality of rubber pads 7 are evenly arranged at the bottom of the first branch pipe 13 .
[0029] During operation, the air guide pipe 12 and the first branch pipe 13 are laid between the floor of the granary and the grain storage rack. After nitrogen is injected into the granary, nitrogen is lighter and will float in the upper space of the granary. At this time, the exhaust unit 1 is started to extract air, and then the servo motor 111 is started to drive the roller 112 to rotate, so that the roller 112 and the top of the first branch pipe 13 produce friction, thereby driving the slide seat 17 at the end of the first branch pipe 13 to move toward the direction of the air guide pipe 12. When the magnet 110 moves to the top of an iron slide cylinder 14, the electric cylinder 19 is started to drive the magnet 110 to descend so that the magnet 110 adsorbs the iron slide cylinder 14, and then the magnet 110 is driven to rise by the electric cylinder 19. At this time, the iron slide cylinder 14 is adsorbed and rises, causing multiple ventilation grooves 15 to leak out of the top of the first branch pipe 13. At this time, part of the air at the bottom of the granary will be sucked into the interior of the slide seat 17 through the ventilation holes 113, and then sucked into the interior of the first branch pipe 13 through multiple ventilation grooves 15, and then discharged by the exhaust unit 1. The nitrogen concentration detection device is used to determine whether the residual air in this area is completely discharged, and then the electric cylinder 19 is started again to lift the magnet 110. At this time, the iron slide cylinder 14 will not be able to continue to rise due to the obstruction of the limit block 16, and then it will be separated from the adsorption and fall back into the first branch pipe 13. At this time, the slide seat 17 can be moved again to move the slide seat 17 to the next first branch pipe 13. The above operation is repeated above. When air is extracted, the air at the bottom of the granary is sucked into the interior of the second branch pipe 21 through the multiple air inlet holes 22, and then flows into the interior of the slide seat 17 through the rotating cylinder 2 and the vent hole 113, and is finally discharged. The arrangement of the multiple air inlet holes 22 can enable the air between the multiple first branch pipes 13 to be sucked away more evenly. When air is sucked through the multiple air inlet holes 22, the rotating motor 3 is started to drive the connecting rod 31 to rotate, thereby driving the multiple air inlet holes 22 to rotate, so that the multiple air inlet holes 22 can absorb air in a wider range, and with the rotation of the second branch pipe 21, the air at the bottom of the granary can be driven to flow quickly, thereby making the nitrogen The air can complete the filling faster. As the rotating cylinder 2 rotates, friction will be generated between the rotating cylinder 2 and the top of the slide 17. Through the arrangement of multiple balls 4, the contact area between the rotating cylinder 2 and the top of the slide 17 can be reduced, thereby reducing the friction between the rotating cylinder 2 and the top of the slide 17. When the multiple second branch pipes 21 move and rotate, they may be hindered by the pillars of the grain storage rack. When the second branch pipe 21 contacts the pillars of the grain storage rack, the second branch pipe 21 will bend under force. After passing through the pillars, the second branch pipe 21 will recover under the elastic force of the spring 5. When air is inhaled through the multiple air inlet holes 22, the multiple blocking nets 6 will block the debris at the bottom of the granary, preventing the debris from being sucked in.
[0030] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.
Claims
1. A nitrogen gas conditioning and forced exhaust device, comprising an exhaust external machine (1); characterized in that: The side wall of the exhaust unit (1) is connected to an air duct (12); the middle of the air duct (12) is connected to a plurality of first branch pipes (13); the middle of the first branch pipe (13) is slidably connected to an iron slide cylinder (14); the middle of the iron slide cylinder (14) is provided with a plurality of ventilation grooves (15); the middle of the iron slide cylinder (14) is fixedly connected to a limiting block (16); the top of the first branch pipe (13) is slidably connected to a slide seat (17); the inner side wall of the slide seat (17) is fixedly connected to a fixing plate (18); the fixing plate (18) is fixedly connected to the fixing plate (18). An electric cylinder (19) is fixedly connected to the bottom; a magnet (110) is fixedly connected to the output end of the electric cylinder (19); a servo motor (111) is fixedly connected to the outer wall of the slide seat (17); the output end of the servo motor (111) passes through the side wall of the slide seat (17); a roller (112) is fixedly connected to the output end of the servo motor (111); the roller (112) is located inside the slide seat (17), and the roller (112) is in rolling cooperation with the top of the first branch pipe (13); a vent hole (113) is provided at the top of the slide seat (17).
2. A nitrogen gas conditioning and forced exhaust device according to claim 1, characterized in that: The top of the sliding seat (17) is rotatably connected to a rotating cylinder (2); the rotating cylinder (2) is connected to the sliding seat (17) through a vent hole (113); the side wall of the rotating cylinder (2) is connected to a pair of second branch pipes (21); a plurality of air inlet holes (22) are provided in the middle of the second branch pipes (21), and the plurality of air inlet holes (22) are arranged facing the bottom of the first branch pipe (13).
3. A nitrogen gas regulation and forced exhaust device according to claim 2, characterized in that: A rotating motor (3) is fixedly connected to the top of the fixed plate (18); a plurality of connecting rods (31) are fixedly connected to the output end of the rotating motor (3); and the other ends of the plurality of connecting rods (31) are fixedly connected to the inner side wall of the rotating cylinder (2).
4. A nitrogen gas conditioning and forced exhaust device according to claim 3, characterized in that: A plurality of round balls (4) are fixedly connected to the top of the sliding seat (17); the tops of the round balls (4) are in contact with the bottom of the rotating cylinder (2).
5. A nitrogen gas conditioning and forced exhaust device according to claim 4, characterized in that: The second branch pipe (21) is made of a flexible material; a spring (5) is fixedly connected to the inner side of the second branch pipe (21); and the end of the spring (5) is fixedly connected to the middle part of the rotating cylinder (2).
6. A nitrogen gas conditioning and forced exhaust device according to claim 5, characterized in that: A blocking net (6) is fixedly connected to the middle of the air inlet (22); the blocking net (6) has the same shape as the air inlet (22).