Mobile grain low-temperature drying and dehumidifying device

Abstract

The utility model relates to the technical field of grain drying, and concretely relates to a mobile low-temperature grain drying and dehumidifying device, which comprises a drying box body, two ground rails are symmetrically and fixedly installed on the bottom of the inside of the drying box body, a goods shelf for placing grain is slidably arranged on the ground rails, a plurality of moving wheels are fixedly installed on the bottom of the goods shelf, and the utility model further comprises limiting grooves, which are arranged on the bottom of the inside of the drying box body and the middle of the ground rails, and a piston plate is slidably arranged in the limiting grooves. The utility model automatically completes locking after the goods shelf is pushed into the drying box body, without manual installation of locking parts or external power sources such as electricity or hydraulic pressure, so that the operation is simplified, the efficiency of loading and unloading is improved, and the situation of missed locking or locking failure is avoided, which is beneficial to the stability of the goods shelf during the drying process, thereby improving the uniformity of grain heating and reducing the safety hazards caused by the movement and collision of the goods shelf.

Description

Technical Field

[0001] This utility model relates to the field of grain drying technology, specifically a mobile low-temperature grain drying and dehumidification device. Background Technology

[0002] After harvest, grains typically have a high moisture content. If not dried promptly, they are prone to heating, mold, and insect infestation during storage, leading to post-harvest losses and compromising storage safety. Therefore, grain drying is a crucial step in reducing post-harvest losses and ensuring safe storage. Traditional sun-drying methods are constrained by weather and space, have long drying cycles, require large areas, and are susceptible to contamination by impurities, bird and insect damage, and rain. They are ill-suited for large-scale continuous operations. Hot air drying is a widely used grain drying method, but conventional high-temperature hot air drying operates at excessively high temperatures. While rapidly removing moisture, it can cause grains to crack and break, damaging nutrients such as proteins and vitamins, thus affecting grain quality and processing value. Low-temperature drying and dehumidification technology controls the drying temperature at a lower level and, combined with dehumidification, can gradually reduce the moisture content of grains while ensuring grain quality. Consequently, it is increasingly widely used in the storage, transportation, and drying of high-quality grains and seed grains.

[0003] Existing mobile low-temperature grain drying and dehumidification devices typically include a movable drying chamber and drying components, shelves, and other structures installed inside the chamber. When in use, the shelves containing the grain are pushed into the drying chamber, the door is closed, and the drying components are activated to perform low-temperature drying and dehumidification of the grain.

[0004] However, in existing equipment, the positioning and fixing of the shelves after they are pushed into the drying box mostly rely on manual insertion of locking pins, buckles and other locking components. Manual operation is not only cumbersome, time-consuming and labor-intensive, but may also result in missed locks or improper locking, causing the shelves to move and shake inside the drying box during the drying process, affecting the uniformity of grain heating, and may also cause the shelves to collide with the drying box and drying components, shortening the service life of the equipment and creating safety hazards. If an electric or hydraulic automatic locking mechanism is used, a power source, controller and transmission structure need to be added, which is complex, costly and energy-intensive, and not convenient to be deployed on mobile equipment. Utility Model Content

[0005] To address the aforementioned issues, this application provides a mobile low-temperature grain drying and dehumidification device, which solves the problems of cumbersome, time-consuming, and labor-intensive manual locking methods, as well as the possibility of missed locks or inadequate locking mechanisms.

[0006] The technical solution provided by this utility model is: a mobile low-temperature grain drying and dehumidification device, comprising: Drying chamber; A floor rail is provided at the bottom inside the drying chamber. A shelf, which is mounted on the ground track and is capable of moving along the ground track; The movable wheels are located at the bottom of the shelf and roll in cooperation with the floor rails; The limiting groove is located at the bottom inside the drying chamber and in the middle of the ground rail, and the limiting groove corresponds to the predetermined parking position of the moving wheel; A piston plate is slidably disposed in the limiting groove. When the moving wheel moves to the predetermined stopping position, it abuts against the piston plate and can drive the piston plate to move downward along the limiting groove. An air cylinder is located at the bottom of the drying chamber. A piston rod, which is slidably disposed inside the air cylinder; A fixing block is disposed on the outside of the shelf, and the fixing block is provided with a through hole corresponding to the piston column; When the piston plate moves downward, it compresses the air in the limiting groove and drives the piston rod to move through the air pressure transmission between the limiting groove and the air cylinder, so that the piston rod is inserted into the through hole of the fixing block.

[0007] Specifically, an air chamber is fixedly installed at the bottom of the drying chamber, the air chamber is connected to the limiting groove, and the air cylinder is fixedly installed at the bottom of the drying chamber.

[0008] Specifically, multiple air chambers are provided, and each air chamber is individually connected to the air cylinder through a pipe.

[0009] Specifically, the piston rod slides through the bottom of the drying chamber, and sealing rings are provided on the outer sides of both the piston plate and the piston rod.

[0010] Specifically, a foot pedal is fixedly installed on the outside of the piston rod. The foot pedal is used to drive the piston rod to move into the air cylinder and drive the piston plate to move upward by compressing the air in the air cylinder.

[0011] Specifically, a first limiting rope is provided between the bottom of the piston rod and the bottom of the inner side of the air cylinder, and the length of the first limiting rope is less than the height of the air cylinder.

[0012] Specifically, a second limiting rope is provided between the piston plate and the bottom of the air chamber, and the length of the second limiting rope is less than the height of the air chamber.

[0013] Specifically, the drying chamber is equipped with a drying section inside, which includes a heating component, a temperature control component, a hot air circulation fan, and a filter component.

[0014] Specifically, the drying chamber has a closed door at one end and a control unit on the outside of the drying chamber, which is electrically connected to the drying unit and the closed door.

[0015] The beneficial effects of this utility model are as follows:

[0016] (1) The mobile grain low-temperature drying and dehumidification device of this utility model uses the moving wheels to press the piston plate down and the compressed air to drive the piston column up to insert into the through hole of the fixing block, so that the shelf is automatically locked after being pushed into the drying box. There is no need for manual insertion of locking parts, nor is there a need for external power sources such as electric or hydraulic. This simplifies operation, improves loading and unloading efficiency, and avoids manual missing locks or incomplete locking. It is beneficial to ensure the stability of the shelf during the drying process, thereby improving the uniformity of grain heating and reducing the safety hazards caused by shelf movement and collision.

[0017] (2) The mobile grain low-temperature drying and dehumidification device described in this utility model can be unlocked by foot pedal. When picking up goods, the staff only needs to step on the foot pedal to drive the piston plate to reset and move upward by compressed air, thereby unlocking the shelf. The operation is labor-saving and convenient, and it is easy to pick up goods quickly. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 A schematic diagram of the external structure of the mobile grain low-temperature drying and dehumidification device provided by this utility model;

[0020] Figure 2 A schematic diagram of the internal structure of the mobile grain low-temperature drying and dehumidification device provided by this utility model;

[0021] Figure 3 A schematic diagram of the ground track installation for the mobile grain low-temperature drying and dehumidification device provided by this utility model;

[0022] Figure 4 A schematic diagram of the piston plate installation for the mobile grain low-temperature drying and dehumidification device provided by this utility model;

[0023] Figure 5 A schematic diagram of the air cylinder installation for the mobile grain low-temperature drying and dehumidification device provided by this utility model;

[0024] Figure 6 A schematic diagram of the piston column structure of the mobile grain low-temperature drying and dehumidification device provided by this utility model.

[0025] In the picture:

[0026] 1. Drying chamber; 2. Control unit; 3. Drying unit; 4. Enclosed door; 5. Moving part; 6. Shelf; 7. Fixing block; 8. Floor rail; 9. Limiting groove; 10. Piston plate; 11. Air chamber; 12. Air cylinder; 13. Piston column; 14. Sealing ring; 15. Foot pedal; 16. Casters. Detailed Implementation

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the present utility model will be briefly introduced below in conjunction with the accompanying drawings and descriptions of the embodiments or the prior art. Obviously, the following description of the structure of the accompanying drawings is only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. It should be noted that the description of these embodiments is used to help understand this utility model, but does not constitute a limitation on this utility model.

[0028] like Figures 1 to 6 As shown, a mobile low-temperature grain drying and dehumidification device includes a drying chamber 1. Two ground rails 8 are symmetrically fixedly installed on the bottom inner side of the drying chamber 1. A shelf 6 for placing grain is slidably arranged on the ground rails 8. Multiple casters 16 are fixedly installed on the bottom of the shelf 6. The shelf 6 moves along the ground rails 8 via the casters 16, so as to push the shelf 6 into the drying chamber 1 or pull it out of the drying chamber 1.

[0029] A limiting groove 9 is provided on the bottom inner side of the drying chamber 1 and in the middle of the floor rail 8. A piston plate 10 is slidably installed inside the limiting groove 9. The limiting groove 9 is located at the position corresponding to when the moving wheel 16 moves with the shelf 6 to the predetermined stopping position. When the shelf 6 moves along the floor rail 8 to the predetermined position, the corresponding moving wheel 16 moves above the piston plate 10 and, under the weight of the shelf 6 and the grain it carries, presses the piston plate 10 downward, causing the piston plate 10 to move downward along the limiting groove 9. After the piston plate 10 moves downward, the moving wheel 16 rests against the top of the limiting groove 9, thus using the limiting groove 9 to initially restrict the position of the moving wheel 16.

[0030] An air cylinder 12 is installed at the bottom of the drying chamber 1, and a piston column 13 is slidably installed inside the air cylinder 12. A fixing block 7 is fixedly installed on the outside of the shelf 6. A through hole is opened in the middle of the fixing block 7, which corresponds to the piston column 13 and can be inserted and engaged with the piston column 13.

[0031] When the moving wheel 16 pushes the piston plate 10 downward, the piston plate 10 compresses the air in the limiting groove 9, increasing the air pressure in the limiting groove 9. The compressed air enters the air cylinder 12 and acts on the piston column 13, pushing the piston column 13 upward. When the shelf 6 moves to the predetermined position, the through hole on the fixing block 7 corresponds to the position of the piston column 13. Under the action of compressed air, the piston column 13 extends upward and inserts into the through hole of the fixing block 7, thereby restricting the shelf 6 from continuing to move relative to the drying chamber 1. The top of the piston column 13 is frustum-shaped, which facilitates the insertion of the piston column 13 into the through hole of the fixing block 7.

[0032] Therefore, during the process of pushing the shelf 6 into the drying chamber 1 and moving it to the predetermined position, the weight of the shelf 6 and the grain itself can be used to drive the piston plate 10 downward by the moving wheel 16, and further drive the piston column 13 to insert into the through hole of the fixing block 7 through gas pressure, thereby realizing the automatic limiting of the shelf 6. This limiting process does not require the operator to insert locking pins or operate locking buckles, nor does it require the installation of an electric or hydraulic power mechanism to drive the locking structure.

[0033] In the above embodiment, a plurality of movable parts 5 are fixedly installed at the bottom of the drying chamber 1. The movable parts 5 include casters with braking function. The movable parts 5 enable the drying chamber 1 to move relative to the work site, so as to facilitate the transfer of the device according to the grain processing position. When the drying chamber 1 moves to the work position, the braking function of the movable parts 5 can be used to restrict the movement of the drying chamber 1, so as to keep the position of the drying chamber 1 stable during the drying operation.

[0034] In the above embodiment, a drying section 3 for drying grain is provided inside the drying chamber 1. The drying section 3 includes a heating component for providing heat, a temperature control component for controlling temperature, a hot air circulating fan, and a filter component for removing moisture.

[0035] The heating element provides the heat required for grain drying to the interior of the drying chamber 1; the temperature control element detects and regulates the temperature inside the drying chamber 1 to ensure that the grain can be dried under the set low temperature conditions; the hot air circulation fan drives the air circulation within the drying chamber 1, allowing the heated air to flow over the grain on the shelf 6; the filtration element treats the moisture carried by the air during the drying process to reduce the humidity of the circulating air inside the drying chamber 1. The heating element uses an SRY-3-220V-8kW flange-type stainless steel finned electric heating tube; the temperature control element includes an A-grade PT100 platinum resistance thermometer, an XMT-7411 intelligent temperature controller, and an SSR-40DA solid-state relay; the hot air circulation fan is a 4-72-4A high-temperature resistant centrifugal circulation fan; the filtration element consists of a TL-10 air-cooled condensing heat exchanger, a BS-150 baffled steam-water separator, and a G3 stainless steel metal filter screen connected in series.

[0036] By coordinating the heating components, temperature control components, hot air circulation fan, and filter components, an air circulation environment for low-temperature drying and dehumidification of grains can be formed within the drying chamber 1. During the drying process, hot air comes into contact with the grains, causing the moisture inside the grains to gradually migrate to the surface of the grains and enter the air. The humid air is then processed and continues to circulate, thereby gradually reducing the moisture content of the grains.

[0037] In the above embodiment, a closed door 4 is provided at the end of the drying chamber 1. Before the grain drying operation, the closed door 4 is opened, and the shelf 6 carrying the grain is pushed into the drying chamber 1 along the ground rail 8; after the shelf 6 moves to the predetermined position and completes the limit, the closed door 4 is closed, so that the drying chamber 1 forms a relatively closed space for grain drying, and then the drying unit 3 is started to carry out the drying operation.

[0038] In the above embodiment, a control unit 2 is provided on the outside of the drying chamber 1, and the control unit 2 is electrically connected to the drying section 3 and the sealing door 4. The control unit 2 is used to control the working status of the drying section 3 and the sealing door 4, so as to facilitate centralized control of the drying operation by the staff.

[0039] In the above embodiment, the piston rod 13 slides through the bottom of the drying chamber 1, allowing the piston rod 13 to move up and down relative to the drying chamber 1 under the action of changes in air pressure inside the air cylinder 12. Sealing rings 14 are fixedly installed on the outer sides of both the piston plate 10 and the piston rod 13.

[0040] The sealing ring 14, located on the outer side of the piston plate 10, improves the sealing performance between the piston plate 10 and the limiting groove 9, reducing compressed air leakage from the periphery of the piston plate 10 during its movement. The sealing ring 14, located on the outer side of the piston rod 13, improves the sealing performance between the piston rod 13 and the air cylinder 12. The sealing ring 14 reduces the impact of gas leakage on the pressure transmission process, improving the stability of the pneumatic linkage between the piston plate 10 and the piston rod 13.

[0041] In the above embodiment, an air chamber 11 is fixedly installed at the bottom of the drying chamber 1. The air chamber 11 is connected to the limiting groove 9. An air cylinder 12 is fixedly installed at the bottom of the drying chamber 1. In this embodiment, there is one air cylinder 12. One air cylinder 12 connects to four air chambers 11. Two air chambers 11 are connected to the limiting groove 9, and the other two air chambers 11 are connected to another limiting groove 9.

[0042] When the corresponding moving wheel 16 moves above the piston plate 10, the moving wheel 16 presses the piston plate 10 downward, causing the piston plate 10 to move downward along the limiting groove 9. During the downward movement of the piston plate 10, the air in the limiting groove 9 and the air chamber 11 is compressed. The compressed air flows through the pipe to the air cylinder 12 and acts on the piston column 13 in the air cylinder 12, causing the piston column 13 to move upward.

[0043] Each air chamber 11 is individually connected to the air cylinder 12 through a pipe, so that the air pressure generated by the multiple piston plates 10 being squeezed by the moving wheel 16 can be transmitted to the air cylinder 12, thereby realizing the pneumatic linkage between the moving wheel 16, piston plates 10, air chamber 11, air cylinder 12 and piston column 13.

[0044] Meanwhile, as the shelf 6 moves along the ground track 8, when the moving wheel 16 passes the piston plate 10 that is not at its final stopping position, the moving wheel 16 may briefly press down on the piston plate 10. Since the air chamber 11 and the air cylinder 12 are connected by a pipe, there is a certain flow resistance when the air flows through the pipe. Therefore, when the piston plate 10 is subjected to short-term compression, its displacement can be limited to a certain extent, thereby reducing the obstruction caused by the piston plate 10 to the normal movement of the shelf 6.

[0045] In the above embodiment, a foot pedal 15 is fixedly installed on the outside of the piston column 13. When the grain drying is completed and the shelf 6 needs to be removed from the drying chamber 1, the worker can step down on the foot pedal 15, which will drive the piston column 13 to move downward.

[0046] As the piston rod 13 moves downward, the portion of it inserted into the through hole of the fixing block 7 gradually exits the fixing block 7, thus releasing the piston rod 13 from its restriction on the shelf 6. At the same time, the piston rod 13 moves into the air cylinder 12 and compresses the air inside the air cylinder 12. The compressed air enters the air chamber 11 and the limiting groove 9 through the pipe, and pushes the piston plate 10 upward.

[0047] After the piston plate 10 moves upward, it can lift the moving wheel 16 located above it, causing the moving wheel 16 to disengage from the limiting position formed by the limiting groove 9. After the piston rod 13 exits the through hole of the fixing block 7 and the moving wheel 16 is lifted by the piston plate 10, the limiting state of the shelf 6 is released, and the staff can pull the shelf 6 out of the drying chamber 1 along the ground rail 8.

[0048] Therefore, by stepping on the foot pedal 15, the piston column 13 can be retracted and the piston plate 10 can be reset simultaneously, so that the shelf 6 can be changed from a locked state to a movable state, making it easier for staff to retrieve goods.

[0049] In the above embodiment, a first limiting rope is fixedly installed between the bottom of the piston rod 13 and the bottom of the inner side of the air cylinder 12, and the length of the first limiting rope is less than the height of the air cylinder 12.

[0050] As the piston rod 13 moves upward under the action of compressed air, the first limiting rope gradually tightens as the piston rod 13 moves. When the first limiting rope reaches a taut state, it can restrict the piston rod 13 from continuing to move upward, thereby limiting the maximum upward stroke of the piston rod 13 relative to the air cylinder 12, and preventing the piston rod 13 from moving too far and dislodging from the air cylinder 12 or exceeding the predetermined insertion position.

[0051] In the above embodiment, a second limiting rope is fixedly installed between the piston plate 10 and the bottom of the inner side of the air chamber 11, and the length of the second limiting rope is less than the height of the air chamber 11.

[0052] When the operator steps on foot pedal 15, causing compressed air from air cylinder 12 to enter air chamber 11 and push piston plate 10 upward, the second limiting rope gradually tightens as piston plate 10 moves. When the second limiting rope reaches a taut state, it can restrict piston plate 10 from continuing to move upward, thereby limiting the maximum upward stroke of piston plate 10 and preventing piston plate 10 from coming out of limiting groove 9.

[0053] In use, the drying chamber 1 is first moved to the corresponding working position by the moving part 5, and the drying chamber 1 is positioned by the braking function of the moving part 5. Then the closing door 4 is opened, and the shelf 6 containing the grain to be dried is pushed into the drying chamber 1 along the ground track 8.

[0054] As the shelf 6 moves along the ground track 8, the moving wheels 16 reach the position corresponding to the limiting groove 9. When the shelf 6 reaches the predetermined stopping position, the moving wheels 16 rest on top of the piston plate 10 and, under the weight of the shelf 6 and the grain, press downwards against the piston plate 10. The piston plate 10 moves downwards and compresses the air in the limiting groove 9 and the air chamber 11. The compressed air is transported through a pipe to the air cylinder 12, pushing the piston rod 13 upwards, causing the piston rod 13 to insert into the through hole of the fixing block 7. Simultaneously, the moving wheels 16 rest against the top of the limiting groove 9, thereby limiting the shelf 6 through the engagement between the moving wheels 16 and the limiting groove 9, and the insertion engagement between the piston rod 13 and the fixing block 7.

[0055] After the shelf 6 completes its limit position, the sealing door 4 is closed, and the drying section 3 is started through the control unit 2. The heating component in the drying section 3 provides heat to the drying chamber 1, the hot air circulation fan drives the air circulation, the temperature control component controls the temperature inside the drying chamber 1, and the filter component treats the moisture in the circulating air, so that the grain is continuously dried and dehumidified under low temperature conditions.

[0056] After drying is complete, the drying unit 3 is stopped and the sealing door 4 is opened via the control unit 2. The operator steps down on the foot pedal 15, causing the piston rod 13 to move downwards and exit the through hole of the fixing block 7. Simultaneously, the piston rod 13 compresses the air in the air cylinder 12, allowing the compressed air to enter the air chamber 11 and the limiting groove 9 through the pipe, pushing the piston plate 10 upwards. The piston plate 10 then lifts the moving wheel 16 upwards, thereby releasing the limiting groove 9 from restricting the moving wheel 16. After unlocking, the shelf 6 can be pulled out of the drying chamber 1 along the floor rail 8.

[0057] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A mobile low-temperature grain drying and dehumidification device, characterized in that: include: Drying chamber (1); Ground rail (8), the ground rail (8) is set at the bottom inside the drying box (1); Shelf (6), which is mounted on the ground rail (8) and is movable along the ground rail (8); The movable wheels (16) are located at the bottom of the shelf (6) and roll in cooperation with the ground rail (8); The limiting groove (9) is located at the bottom of the inner side of the drying box (1) and the middle of the ground rail (8), and the limiting groove (9) corresponds to the predetermined parking position of the moving wheel (16). Piston plate (10), the piston plate (10) is slidably disposed in the limiting groove (9), the moving wheel (16) abuts against the piston plate (10) when it moves to the predetermined parking position, and can drive the piston plate (10) to move downward along the limiting groove (9); An air cylinder (12) is provided at the bottom of the drying chamber (1); Piston column (13), which is slidably disposed inside the air cylinder (12); A fixing block (7) is provided on the outside of the shelf (6), and the fixing block (7) is provided with a through hole corresponding to the piston column (13); When the piston plate (10) moves downward, it compresses the air in the limiting groove (9) and drives the piston rod (13) to move through the air pressure transmission between the limiting groove (9) and the air cylinder (12), so that the piston rod (13) is inserted into the through hole of the fixing block (7).

2. The mobile low-temperature grain drying and dehumidification device according to claim 1, characterized in that: An air chamber (11) is fixedly installed at the bottom of the drying box (1). The air chamber (11) is connected to the limiting groove (9). The air cylinder (12) is fixedly installed at the bottom of the drying box (1).

3. The mobile low-temperature grain drying and dehumidification device according to claim 2, characterized in that: Multiple air chambers (11) are provided, and each air chamber (11) is individually connected to the air cylinder (12) through a pipe.

4. The mobile low-temperature grain drying and dehumidification device according to claim 1, characterized in that: The piston rod (13) slides through the bottom of the drying chamber (1), and sealing rings (14) are provided on the outer sides of the piston plate (10) and the piston rod (13).

5. The mobile low-temperature grain drying and dehumidification device according to claim 1, characterized in that: A foot pedal (15) is fixedly installed on the outside of the piston rod (13). The foot pedal (15) is used to drive the piston rod (13) to move into the air cylinder (12) and drive the piston plate (10) to move upward by compressing the air in the air cylinder (12).

6. The mobile low-temperature grain drying and dehumidification device according to claim 1, characterized in that: A first limiting rope is provided between the bottom of the piston rod (13) and the bottom of the inner side of the air cylinder (12), and the length of the first limiting rope is less than the height of the air cylinder (12).

7. The mobile low-temperature grain drying and dehumidification device according to claim 2, characterized in that: A second limiting rope is provided between the piston plate (10) and the bottom of the inner side of the air chamber (11), and the length of the second limiting rope is less than the height of the air chamber (11).

8. The mobile low-temperature grain drying and dehumidification device according to claim 1, characterized in that: The drying chamber (1) is provided with a drying section (3) inside. The drying section (3) includes a heating component, a temperature control component, a hot air circulation fan, and a filter component.

9. The mobile low-temperature grain drying and dehumidification device according to claim 8, characterized in that: The drying chamber (1) is provided with a closed door (4) at one end, and a control unit (2) is provided on the outside of the drying chamber (1). The control unit (2) is electrically connected to the drying unit (3) and the closed door (4) respectively.

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