Intelligent heat pump grain dehumidifier

Abstract

The invention discloses an intelligent heat pump grain dehumidifier, and relates to the technical field of agricultural equipment.The intelligent heat pump grain dehumidifier comprises a movable frame and further comprises a stirring barrel, a dehumidification assembly, a material pouring assembly, a control box and a moisture meter used for monitoring grain moisture which are arranged on the movable frame, and the stirring barrel, the dehumidification assembly, the material pouring assembly and the moisture meter are all in control connection with the control box; the stirring barrel comprises a barrel body and a stirring assembly arranged in the barrel body, a feeding port is formed in the top of the barrel body, a cover body is fixedly installed at the bottom of the barrel body, a discharging port is formed in the lower portion of the rear end of the barrel body, and air holes communicated with the cover body are evenly formed in the bottom of the barrel body. According to the intelligent heat pump grain dehumidifier, the spiral stirring assembly turns over grains at the bottom of the barrel body alternately and continuously through spiral arrangement of the cross-shaped stirring rods, hot air generated by a heat pump evenly permeates a grain layer in cooperation with the air holes densely distributed in the bottom of the barrel body and the inverted-cone-shaped cover body, water vapor is conveniently dissipated, and the dehumidification efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of agricultural equipment technology, specifically to an intelligent heat pump grain dehumidifier. Background Technology

[0002] A grain dehumidifier is a grain drying device used to remove moisture from grains. Most grain dehumidifiers on the market are currently fixed installations. Although some small devices have simple mobility, their core technology still relies on traditional heating (such as electric heating or coal-fired heating) or ordinary ventilation and dehumidification methods. The functional modules of the equipment are relatively independent, and manual assistance is usually required to complete operations such as feeding, stirring, moisture detection, and unloading. The degree of automation is low and the energy consumption is high.

[0003] Therefore, it is necessary to propose an intelligent heat pump grain dehumidifier to solve the above problems. Summary of the Invention

[0004] Technical problem to be solved: The purpose of this invention is to provide an intelligent heat pump grain dehumidifier to solve the problems of poor mobility, high energy consumption and low automation of existing grain dehumidifiers mentioned in the background art.

[0005] Technical Solution: To achieve the above objectives, the present invention is implemented through the following technical solution: A smart heat pump grain dehumidifier, comprising a mobile frame, and further comprising a mixing tank, a dehumidification component, a discharging component, a control box, and a moisture meter for monitoring grain moisture, all mounted on the mobile frame. The mixing tank, dehumidification component, discharging component, and moisture meter are all connected to the control box. The mixing tank comprises a cylinder and a mixing component disposed within the cylinder. The top of the cylinder has a feed inlet, the bottom has a fixed cover, and the lower rear of the cylinder has a discharge outlet. The bottom of the cylinder has evenly spaced ventilation holes communicating with the cover. The bottom of the cover has an air inlet pipe communicating with its interior, and the lower end of the air inlet pipe has a fixed ring I. The rear side of the bottom of the cylinder is hinged to the mobile frame. The discharging component includes a power source and is hinged to both sides of the front end of the cylinder. The dehumidification assembly includes an air source heat pump, a fan, and an L-shaped air supply duct connected in sequence, and also includes a temperature and humidity sensor installed inside the cylinder (31). The vertical section of the air supply duct is located directly below the air inlet pipe. A connecting hose is fixedly installed at the top of the vertical section of the air supply duct, and fixed plates are fixedly installed on both sides. A fixed ring II is fixedly installed at the other end of the connecting hose. A through hole is opened on the fixed plate, and a connecting rod is slidably fitted inside the through hole. The upper end of the connecting rod is fixedly connected to the fixed ring II, and a limit block is fixedly installed at the lower end. A spring is fitted on the connecting rod between the fixed plate and the fixed ring II.

[0006] Preferably, the stirring assembly includes a drive motor and a reducer fixedly installed at the front end of the cylinder, and a rotating shaft concentrically installed inside the cylinder. The rotating shaft is connected to the drive motor via the reducer. Multiple stirring rods are fixedly installed on the rotating shaft at axial intervals. The stirring rods and the rotating shaft are arranged in a cross shape, and the multiple stirring rods are arranged in a spiral. Multiple stirring blades are fixedly installed on the stirring rods at axial intervals.

[0007] Preferably, a fixed frame is fixedly installed at the bottom of the cylinder, and support rods are rotatably installed on both sides of the rear end of the fixed frame. The lower ends of the two support rods are fixedly connected to the mobile frame. A U-shaped rod is provided at the front end of the bottom of the fixed frame, and the U-shaped rod is fixedly connected to the mobile frame.

[0008] Preferably, the power source includes an oil tank and a hydraulic pump. The hydraulic pump is connected to a control box. The oil outlet of the hydraulic pump is connected to hydraulic push rod I and hydraulic push rod II respectively through oil pipes. A support frame is fixedly installed at the rear end of the cylinder. The upper end of hydraulic push rod II is hinged to the support frame.

[0009] Preferably, it also includes multiple limiting components symmetrically fixedly installed on both sides of the mobile frame. The multiple limiting components are arranged in a rectangular array. The limiting components include a hand-cranked telescopic rod and an anti-slip plate fixedly installed at the lower end of the hand-cranked telescopic rod.

[0010] Preferably, a spiral grain conveying hose is also fixedly installed on the top of the mixing tank. The spiral grain conveying hose is also connected to the control box, and the output end of the spiral grain conveying hose is connected to the inside of the mixing tank.

[0011] Beneficial effects: Compared with the prior art, the present invention provides an intelligent heat pump grain dehumidifier. The intelligent heat pump grain dehumidifier has a unique structure and is easy to use. On the one hand, the spiral stirring component realizes the alternating and uninterrupted turning of the grain at the bottom of the cylinder through the spiral arrangement of the stirring rod. Combined with the densely distributed vent holes at the bottom of the cylinder and the inverted conical cover, the hot air generated by the heat pump can evenly penetrate the grain layer, which facilitates the dissipation of water vapor and improves the dehumidification efficiency.

[0012] On the other hand, the spring-type fixed ring sealing structure of the dehumidification component can automatically separate / fit as the cylinder flips, eliminating the need for manual disassembly of the air duct and solving the industry problem of "adapting the connection between the flipping discharge and the air supply"; the unloading component achieves full automation of "moisture content meets standards - cylinder flips - discharge port opens" through the control box linking the hydraulic push rod and the moisture meter, saving manual monitoring and unloading operations and reducing labor costs.

[0013] In addition, the symmetrically arranged hand-cranked telescopic poles, together with anti-slip plates, can be adjusted individually according to the flatness of the ground. By using friction to limit the vibration and displacement of the equipment, the pain point of "easy deviation during operation" of mobile equipment is solved, enabling the equipment to operate stably in various scenarios such as fields and warehouses. Attached Figure Description

[0014] Figure 1 This is a three-dimensional front view schematic diagram of the structure of the present invention; Figure 2 This is a three-dimensional side view of the structure of the present invention; Figure 3 This is a partial cross-sectional schematic diagram of the structure of the present invention; Figure 4 This is a three-dimensional cross-sectional view of the cylindrical structure of the present invention; Figure 5 This is a three-dimensional schematic diagram of the stirring rod structure of the present invention; Figure 6 For the present invention Figure 2 Enlarged schematic diagram of the structure in area A; Figure 7 For the present invention Figure 3 Enlarged schematic diagram of the structure in region B.

[0015] In the diagram: 1. Mobile frame; 2. Limiting assembly; 21. Hand-cranked telescopic rod; 22. Anti-slip plate; 3. Mixing tank; 31. Cylinder; 32. Feed inlet; 33. Drive motor; 34. Reducer; 35. Rotating shaft; 36. Mixing rod; 37. Mixing blade; 38. Cover; 39. Vent hole; 310. Air inlet pipe; 311. Fixing ring I; 312. Fixing frame; 313. Support rod; 314. U-shaped rod; 4. Dehumidification assembly; 41. Air source heat pump; 42. Fan; 43. Air supply duct; 44. Connecting hose; 45. Fixing ring II; 46. Fixing plate; 47. Connecting rod; 48. Limiting block; 49. Spring; 5. Discharge assembly; 51. Hydraulic push rod I; 52. Hydraulic push rod II; 53. Sealing plate; 54. Support frame; 55. Power source; 6. Control box; 7. Moisture meter. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Example 1: This Example 1 provides an intelligent heat pump grain dehumidifier, which is a direct improvement on existing grain dehumidifiers and has a unique structure. Please refer to [link / reference]. Figure 1-7 As shown, the device includes a mobile frame 1, a mixing tank 3, a dehumidification component 4, a discharging component 5, a control box 6, and a moisture meter 7 for real-time monitoring of grain moisture, all integrated on the mobile frame 1. The mixing tank 3, the dehumidification component 4, the discharging component 5, and the moisture meter 7 are all electrically connected to the control box 6 via wires. The control box 6 has a built-in PLC controller for receiving signals and outputting control commands.

[0018] The mobile frame 1 is equipped with casters at the bottom for easy overall equipment transfer. The mixing tank 3 includes a cylinder 31 and an internal mixing assembly. The cylinder 31 is made of 304 stainless steel with a smooth and corrosion-resistant inner wall. A feed inlet 32 ​​is provided at the top, and a cover 38 (the cover 38 has an inverted conical structure to facilitate the convergence of hot air) is welded to the bottom. A rectangular discharge port is provided at the lower rear end of the cylinder 31, and ventilation holes 39 are evenly distributed at the bottom. The ventilation holes 39 are connected to the inside of the cover 38 to allow hot air to enter the cylinder 31 evenly. A fixing frame 312 is welded to the bottom of the cylinder 31. Support rods 313 are rotatably installed on both sides of the rear end of the fixing frame 312 via pins. The lower end of the support rods 313 is welded to the mobile frame 1 to form the rear hinge fulcrum for the mixing tank 3 to flip. A U-shaped rod 314 is provided at the front end of the bottom of the fixing frame 312. The two ends of the U-shaped rod 314 are welded to the mobile frame 1 to provide front-end support for the mixing tank 3 when it is in a horizontal state, thereby improving the stability of the cylinder 31.

[0019] The stirring assembly includes a drive motor 33 and a reducer 34 (the drive motor 33 is a servo motor with adjustable speed) fixedly installed on the front end face of the cylinder 31, and a rotating shaft 35 concentrically mounted inside the cylinder 31 via bearings; the front end of the rotating shaft 35 passes through the end plate of the cylinder 31 and is connected to the output end of the reducer 34 via a coupling; multiple stirring rods 36 are welded on the rotating shaft 35 at axial intervals of 20-30cm, the stirring rods 36 are arranged perpendicularly to the rotating shaft 35 in a cross shape, and the multiple stirring rods 36 are arranged in a spiral line (the spiral angle is 15-20°), and multiple stirring blades 37 are welded on the stirring rods 36 at axial intervals of 5-8cm. The stirring assembly can alternately and continuously turn the grain at the bottom of the cylinder 31, which facilitates the dissipation of water vapor and improves the dehumidification efficiency; the air inlet pipe 310 is welded to the center of the bottom of the cover 38 and communicates with the inside of the cover 38; a fixing ring I 311 is welded to the lower end of the air inlet pipe 310, and a rubber sealing gasket is provided on the lower end face of the fixing ring I 311.

[0020] The dehumidification component 4 is a hot air generation and delivery unit, including an air source heat pump 41, a fan 42, and an L-shaped air supply duct 43 connected in sequence through a duct. The air source heat pump 41 is a low-temperature heat pump unit (it can operate at ambient temperatures of -10℃ to 40℃) used to absorb heat from the environment and generate dry hot air at 50-60℃. The fan 42 is a centrifugal fan with a wind pressure ≥500Pa and its speed can be adjusted by the control box 6 to ensure that the hot air can penetrate the piled grains. The temperature and humidity sensor can monitor the temperature and humidity inside the cylinder 31. The vertical section of the air supply duct 43 is located directly below the air inlet pipe 310. A connecting hose 44 (using a high-temperature resistant silicone hose that can adapt to the displacement caused by the rotation of the cylinder 31) is welded to the top of the vertical section. A fixing ring II 45 is fixedly installed at the other end of the connecting hose 44. The upper end of the fixing ring II 45 is also provided with a rubber sealing gasket.

[0021] The vertical section of the air supply duct 43 is welded with fixing plates 46 on both sides. The fixing plates 46 have guide holes, and a connecting rod 47 is slidably fitted inside the holes. The upper end of the connecting rod 47 is welded to the fixing ring II 45, and the lower end is welded with a limit block 48 (to prevent the connecting rod 47 from coming out). A compression spring 49 (spring stiffness coefficient is 500-800N / m) is fitted on the connecting rod 47 between the fixing plates 46 and the fixing ring II 45. When the cylinder 31 is horizontal, the spring 49 is in a slightly compressed state, pushing the fixing ring II 45 to come into close contact with the fixing ring I 311, so as to achieve sealed air supply. When the cylinder 31 is flipped, the fixing ring I 311 and the fixing ring II 45 automatically separate.

[0022] The unloading assembly 5 includes a power source 55 and hydraulic push rods I 51 symmetrically hinged to the ear plates on both sides of the front end of the cylinder 31. The other end of the hydraulic push rods I 51 is hinged to the mounting base of the mobile frame 1 (the hydraulic push rods I 51 have a stroke ≥30cm and a thrust ≥5000N, used to drive the cylinder 31 to rotate around the hinge point of the support rod 313, with a rotation angle of up to 45-60°); the sealing plate 53 is adapted to cover the discharge port, and its upper end is hinged to the cylinder 31 via a hinge. The outer side of the sealing plate 53 has ear plates welded to one end of the hydraulic push rod II 52; the hydraulic push rod II 52 is also hinged to the cylinder 31. The other end of rod II 52 is hinged to the support frame 54 welded to the rear end of cylinder 31 (hydraulic push rod II 52 has a stroke ≥15cm and is used to control the opening and closing of the discharge port); the moisture meter 7 is an insertion capacitive moisture sensor, with the probe extending through the side wall of cylinder 31 into the grain, and the measurement accuracy ≤±0.5%, used to collect grain moisture data in real time and transmit it to control box 6; the PLC controller in control box 6 has a pre-stored moisture threshold (which can be adjusted according to the type of grain, such as 13% for wheat and 14% for corn), and when the measured moisture reaches the threshold, the feeding program is triggered.

[0023] Working principle: First, grains to be dehumidified are added into the cylinder 31 through the feed inlet 32 ​​(the amount of grains does not exceed 70% of the volume of the cylinder 31). The control box 6 controls the drive motor 33 to operate. The drive motor 33 drives the rotating shaft 35 to rotate (speed 10-15 r / min) through the reducer 34. The stirring rod 36 and stirring blades 37 stir the grains. The hot air generated by the air source heat pump 41 enters the cover 38 through the fan 42, air supply pipe 43, connecting hose 44, and fixing ring I / II. Then, it permeates evenly into the grain layer through the vent 39, where it exchanges heat and mass with the moist grains and removes moisture. The temperature and humidity sensor can monitor the temperature and humidity inside the cylinder 31 and transmit the monitoring signal to the control box 6. The control box 6 receives the monitoring signal and adjusts the speed of the fan 42 and the temperature of the hot air to avoid low drying efficiency or energy waste.

[0024] Moisture meter 7 continuously monitors the moisture content of the grain. When the preset threshold is reached, it sends a signal to control box 6. Air source heat pump 41 and fan 42 stop working. PLC controller controls hydraulic pump to operate, which in turn drives hydraulic push rod I 51 to extend, pushing cylinder 31 to rotate upward around support rod 313 until hydraulic push rod I 51 reaches its maximum stroke (at this time, the tilt angle of cylinder 31 meets the discharge requirements). Then, PLC controller controls hydraulic push rod II 52 to retract, pulling sealing plate 53 to rotate outward, opening the discharge port, and the dried grain slides out along the inclined inner wall of cylinder 31. After the discharge is completed, control box 6 controls hydraulic push rod II 52 to extend (sealing plate 53 closes the discharge port), and then controls hydraulic push rod I 51 to retract, and cylinder 31 returns to its original position. At this time, fixing ring I 311 descends with cylinder 31 and contacts fixing ring II 45. Under the action of spring 49, fixing ring II 45 re-closes tightly with fixing ring I 311, restoring the sealed air supply state.

[0025] Example 2: As Figure 1-3 As shown, this embodiment adds a limiting component 2 to the basis of embodiment 1 to improve the stability of equipment operation, and the rest of the structure is the same as that of embodiment 1.

[0026] There are four limiting components 2 in total, symmetrically welded to both sides of the mobile frame 1 (two on each side, arranged in a rectangular array). They include a hand-cranked telescopic rod 21 and an anti-slip plate 22. The hand-cranked telescopic rod 21 is a screw jack structure, including an outer tube, an inner rod, and a hand crank. The outer tube is welded to the mobile frame 1, and the inner rod is connected to the outer tube through a screw nut. Rotating the hand crank can raise or lower the inner rod (raising or lowering range 0-20cm). The anti-slip plate 22 is made of rubber and has a serrated anti-slip texture on its lower surface. It is fixed to the lower end of the inner rod with bolts.

[0027] After the equipment is moved to the work site, turn the hand crank to lower the inner rod until the anti-slip plate 22 is in close contact with the ground (if the ground is uneven, the height of each limit component 2 can be adjusted individually). Use the friction between the anti-slip plate 22 and the ground to limit the displacement of the moving frame 1 and prevent the equipment from shifting due to vibration during stirring and turning.

[0028] Example 3: The difference between Example 3 and Example 1 is that a spiral grain conveying hose (not shown in the figure) is also fixedly installed on the top of the mixing tank 3. The spiral grain conveying hose is also connected to the control box 6. The output end of the spiral grain conveying hose is connected to the inside of the mixing tank 3. The spiral grain conveying hose facilitates the delivery of moist grain to the mixing tank 3, greatly reducing the labor intensity of the operators.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A smart heat pump grain dehumidifier, comprising a mobile frame (1), characterized in that: It also includes a mixing tank (3), a dehumidification assembly (4), a pouring assembly (5), a control box (6), and a moisture meter (7) for monitoring grain moisture, all mounted on a mobile frame (1). The mixing tank (3), dehumidification assembly (4), pouring assembly (5), and moisture meter (7) are all connected to the control box (6). The mixing tank (3) includes a cylinder (31) and a mixing assembly inside the cylinder (31). The top of the cylinder (31) has a feed inlet (32), and the bottom has a cover (38) fixedly installed. The rear end of the cylinder (31) The lower part of the cylinder (31) is provided with a discharge port, and the bottom of the cylinder (31) is provided with ventilation holes (39) that communicate with the cover (38). The bottom of the cover (38) is fixedly installed with an air inlet pipe (310) that communicates with its interior. The lower end of the air inlet pipe (310) is fixedly installed with a fixing ring I (311). The rear side of the bottom of the cylinder (31) is hinged to the mobile frame (1). The unloading assembly (5) includes a power source (55), hydraulic push rods I (51) hinged to both sides of the front end of the cylinder (31), and a seal set in the discharge port of the mobile frame (1). The upper end of the sealing plate (53) is hinged to the cylinder (31), and the other end of the hydraulic push rod I (51) is hinged to the moving frame (1). A hydraulic push rod II (52) is hinged on the sealing plate (53), and the other end of the hydraulic push rod II (52) is hinged to the cylinder (31). The dehumidification assembly (4) includes an air source heat pump (41), a fan (42), and an L-shaped air supply duct (43) connected in sequence. It also includes a temperature and humidity sensor installed inside the cylinder (31). The vertical section of the air supply duct (43) is located at the air inlet pipe (310). Directly below, a connecting hose (44) is fixedly installed at the top of the vertical section of the air supply duct (43), and a fixing plate (46) is fixedly installed on both sides. A fixing ring II (45) is fixedly installed at the other end of the connecting hose (44). A through hole is opened on the fixing plate (46), and a connecting rod (47) is slidably fitted in the through hole. The upper end of the connecting rod (47) is fixedly connected to the fixing ring II (45), and a limit block (48) is fixedly installed at the lower end. A spring (49) is fitted on the connecting rod (47) between the fixing plate (46) and the fixing ring II (45).

2. The intelligent heat pump grain dehumidifier according to claim 1, characterized in that: The stirring assembly includes a drive motor (33) and a reducer (34) fixedly installed at the front end of the cylinder (31), and a rotating shaft (35) concentrically installed inside the cylinder (31). The rotating shaft (35) is connected to the drive motor (33) through the reducer (34). Multiple stirring rods (36) are fixedly installed on the rotating shaft (35) at intervals along the axial direction. The stirring rods (36) and the rotating shaft (35) are arranged in a cross shape, and the multiple stirring rods (36) are arranged in a spiral. Multiple stirring blades (37) are fixedly installed on the stirring rods (36) at intervals along the axial direction.

3. The intelligent heat pump grain dehumidifier according to claim 2, characterized in that: A fixed frame (312) is fixedly installed at the bottom of the cylinder (31). Support rods (313) are rotatably installed on both sides of the rear end of the fixed frame (312). The lower ends of the two support rods (313) are fixedly connected to the mobile frame (1). A U-shaped rod (314) is provided at the front end of the bottom of the fixed frame (312). The U-shaped rod (314) is fixedly connected to the mobile frame (1).

4. The intelligent heat pump grain dehumidifier according to claim 1, characterized in that: The power source (55) includes an oil tank and a hydraulic pump. The hydraulic pump is connected to the control box (6). The oil outlet of the hydraulic pump is connected to the hydraulic push rod I (51) and the hydraulic push rod II (52) through oil pipes. A support frame (54) is fixedly installed at the rear end of the cylinder (31). The upper end of the hydraulic push rod II (52) is hinged to the support frame (54).

5. The intelligent heat pump grain dehumidifier according to claim 1, characterized in that: It also includes multiple limiting components (2) symmetrically fixedly installed on both sides of the mobile frame (1). The multiple limiting components (2) are arranged in a rectangular array. The limiting components (2) include a hand-cranked telescopic rod (21) and an anti-slip plate (22) fixedly installed at the lower end of the hand-cranked telescopic rod (21).

6. The intelligent heat pump grain dehumidifier according to claim 1, characterized in that: The top of the mixing tank (3) is also fixedly installed with a spiral grain conveying hose, which is also connected to the control box (6) for control. The output end of the spiral grain conveying hose is connected to the inside of the mixing tank (3).

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