Static multifunctional grain particle product drying equipment

Abstract

This application relates to the technical field of drying equipment, and specifically discloses a static multifunctional drying equipment for cereal grain products, including a heat pump and a drying chamber. The drying chamber has a feed port at the top, a material transport mechanism outside the feed port, a discharge door on the side wall of the drying chamber, a return air port on the side wall near the heat pump at the upper end of the drying chamber, a return air duct outside the return air port, the other end of the return air duct connected to the heat pump, an inclined plate at the lower end of the drying chamber, a through hole on the inclined plate, an intake fan between the inclined plate and the bottom of the drying chamber, and an exhaust fan next to the feed port. The purpose of this patent is to solve the problems of poor hot air circulation effect and uneven material drying in drying equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of drying equipment, in particular to static multifunctional grain particle product drying equipment. Background Art

[0002] With the advancement of modern technology, people need to reduce the moisture content of grains and other crops to ensure long-term storage. This is often done by manually exposing the crops to sunlight. This method directly radiates heat to the grains, resulting in uneven heating, high dust pollution, and prolonged dehydration. However, existing drying equipment primarily relies on waste heat from kilns or combustion in hot air furnaces and infrared ovens to provide heat. This leads to uncontrolled heating temperatures, poor hot air circulation, and uneven drying of the material. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the technical problem solved by the present invention is to provide a static multifunctional grain particle product drying equipment to solve the problems of poor hot air circulation effect and uneven material drying in the existing drying room.

[0004] In order to solve the above problems, the technical solution adopted by the present invention is: a static multifunctional cereal grain product drying equipment, including a heat pump and a drying chamber, the heat pump and the drying chamber are connected through a hot air duct, an inlet fan is provided in the hot air duct, a feed port is provided at the top of the drying chamber, a discharge door is provided on the side wall of the drying chamber, a return air port is provided on the side wall of the upper end of the drying chamber close to the heat pump, a return air duct is provided outside the return air port, the other end of the return air duct is connected to the heat pump, an inclined plate is provided at the lower end of the drying chamber, an inlet fan is provided between the inclined plate and the bottom of the drying chamber, the inclined plate is inclined toward the discharge door, and an exhaust fan is provided next to the feed port.

[0005] The technical principle of this technical solution is as follows: the material is poured into the drying chamber from the feed port, the heat pump controller is turned on, a large amount of low-temperature heat energy in the air is absorbed, and the compressed air is converted into high-temperature heat energy by the compressor, which heats the introduced fresh air. The hot air is then introduced into the space between the bottom of the drying chamber and the inclined plate through the inlet fan. The space between the inclined plate and the bottom of the drying chamber gradually becomes smaller. As the hot air flows through, the wind pressure gradually increases, causing the hot air to quickly flow through the through holes on the inclined plate to the top of the inclined plate, drying the material placed on the inclined plate. After passing through the material, the hot air becomes moist hot air, a small part of which is discharged through the top exhaust fan, and the other part flows back into the heat pump through the return air duct, realizing waste heat recovery and improving the hot air circulation efficiency of the drying device.

[0006] The beneficial effects of this solution are: 1. By providing a return air duct, most of the excess heat in the drying chamber is recovered, avoiding the large amount of heat discharged during dehumidification of the drying device, which reduces drying efficiency and causes heat energy waste. 2. By providing an inclined plate, the wind pressure when the hot air flows through is increased, and the wind speed of the hot air passing through the inclined plate holes is increased, so that the hot air penetrates the material more effectively, improving the overall drying efficiency and avoiding the problem of uneven drying caused by thick material accumulation. At the same time, after drying is completed, the discharge door is opened, and the material can slide down the inclined plate, improving staff efficiency.

[0007] Furthermore, the inclined plate is composed of a plurality of inverted V-shaped air induction plates, and through holes are provided on the air induction plates, thereby increasing the contact area between the material and the bottom plate, thereby increasing the contact area between the material and the hot air, and improving the grain drying efficiency.

[0008] Furthermore, the inverted V-shaped air induction plate has a V-shaped opening width of 10 to 15 cm. The V-shaped shape is easy to process, occupies little space, and has a large contact area. The V-shaped opening width is preferably 13 cm.

[0009] Furthermore, a filter is installed at the return air inlet, and a high-density air bag is installed on the exhaust fan jacket. The filter at the return air inlet prevents fine debris from the material from entering the heat pump and damaging it. The high-density air bag installed on the exhaust fan jacket recovers fine debris discharged by the exhaust fan, preventing environmental pollution.

[0010] Furthermore, the inner wall of the drying chamber is made of thermal insulation material, which improves the thermal insulation effect of the drying chamber and enhances the drying efficiency.

[0011] Furthermore, the through hole has a diameter of 2 to 5 mm, preferably 3 mm, which can maximize the contact area between the material and the hot air and prevent the material from falling through the through hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 Schematic diagram of an embodiment of the present invention;

[0013] Figure 2 for Figure 1 Left view of the middle oblique plate;

[0014] Figure 3 for Figure 1 Top view of the middle baffle and electromagnetic plate;

[0015] Figure 4 This is a front view of the rear side wall of the box body of Example 2 of the present invention;

[0016] Figure 5 It is a schematic diagram of the material transport mechanism of the present invention. DETAILED DESCRIPTION

[0017] The following is further described in detail through specific implementation methods:

[0018] The figure marks in the drawings of the specification include: box body 10, feed port 11, exhaust fan 12, high-density air bag 13, discharge door 14, heat pump 20, induced draft fan 21, inlet fan 22, return air duct 23, hot air duct 24, inclined plate 40, through hole 41, baffle 50, lower slide plate 51, upper slide plate 52, exhaust hole 53, lower plate slider 54, upper plate slider 55, cylinder 56, push plate 57, upper plate pull rod 57, horizontal slide 58, vertical slide 59, push block 60, contact switch 61, spring 62, electromagnetic plate 63, material conveyor belt 70, and material transport tray 71.

[0019] Example 1 Figure 1 、 Figure 2 、 Figure 5 As shown:

[0020] A static multifunctional grain and granule product drying equipment includes a heat pump 20, a controller, a drying chamber and a material transport mechanism. The heat pump 20 is separated from the drying chamber by a partition. The heat pump 20 adopts an air source heat pump 20. The heat pump 20 includes an exhaust fan 21, a condenser, an evaporator, a compressor and a throttle. An inlet fan is provided on the partition, and a hot air duct is provided on the outer jacket of the inlet fan. The other end of the hot air duct is connected to the heat pump.

[0021] The drying chamber has a feed inlet 11 at the top and a discharge door 14 on the side wall. A return air inlet is provided on the side wall near the heat pump 20 at the upper end of the drying chamber. A return air duct 23 is provided outside the return air inlet. The other end of the return air duct 23 is connected to the heat pump 20. An inclined plate 40 is provided at the lower end of the drying chamber. The inclined plate 40 is fixed to the side wall of the drying chamber by bolts. The inclined plate 40 has a plurality of through holes 41. The end of the inclined plate 40 located on the partition is higher than the end of the inclined plate 40 located on the discharge door 14. The angle between the inclined plate 40 and the horizontal plane is 10° to 50°, preferably 30°. An exhaust fan 12 is provided next to the feed inlet 11. The exhaust fan 12 is covered with a high-density air bag. The high-density air bag can be made of 60-count cotton cloth or 60-count chemical fiber cloth.

[0022] The inclined plate 40 is composed of several inverted V-shaped air induction plates, with through holes set in the air induction plates. The opening width of the inverted V-shaped air induction plates is approximately 10-15 cm, preferably 13 cm. The inclined plate 40 can also be designed in a wavy shape, which provides more uniform force than the inverted V shape. The through holes 41 have a diameter of 2-5 mm, preferably 3 mm.

[0023] The material transport mechanism is arranged outside the feed port of the drying chamber. The material transport mechanism includes a bracket, a transmission wheel rotatably connected to the bracket, a material transport chain 70 mounted on the transmission wheel, and a material transport tray hinged to the material transport chain 71; when the material needs to be dried, the material is placed in the material transport tray, the transmission wheel is started, the material is transported to the feed port and poured into the drying chamber, and then the transmission wheel drives the chain transmission to return the empty material tray and wait for the next material transportation.

[0024] When the material needs to be dried, the material is poured into the drying chamber from the feed port 11 of the drying chamber, and the heat pump 20 controller is turned on to absorb a large amount of low-temperature heat energy in the air. The heat energy is converted into high-temperature heat energy through the compression of the compressor, and the introduced fresh air is heated. The hot air is introduced into the space between the bottom of the drying chamber and the inclined plate 40 through the inlet fan 22. Since the inclined plate 40 is inclined toward the discharge door 14, the space between the inclined plate 40 and the bottom of the drying chamber gradually becomes smaller. When the hot air flows through, the wind pressure gradually increases, so that the hot air quickly passes through the through holes 41 on the inclined plate 40 and flows to the top of the inclined plate 40, drying the material placed on the inclined plate 40. After passing through the material, the hot air becomes humid hot air, a small part of which is discharged through the top exhaust fan 12, and the other part flows back into the evaporator of the heat pump 20 through the return air duct 23, realizing waste heat recovery and improving the hot air circulation efficiency of the drying device.

[0025] By setting up the return air duct 23, most of the waste heat in the drying chamber is recovered, avoiding the large amount of heat being discharged when the drying device is dehumidified, which reduces the drying efficiency and causes heat energy waste. By setting up the inclined plate 40, the wind pressure increases when the hot air flows through, and the wind speed of the hot air passing through the through hole 41 of the inclined plate 40 is increased, so that the effect of hot air penetrating the material is improved. Since the material accumulation thickness at the end of the inclined plate 40 close to the heat pump is smaller, and the material accumulation thickness at the end close to the discharge port is larger, the penetration of the hot air into the thicker part of the material is improved, thereby improving the overall drying efficiency and avoiding the problem of uneven drying due to thick material accumulation. At the same time, after the drying is completed, the discharge door 14 is opened, and the material can slide down the inclined plate 40, thereby improving the efficiency of the staff.

[0026] Example 2 is as shown in the attached Figure 1 、 Figure 3 As shown: The parts identical to those in Example 1 are not repeated here. The invention is characterized in that a baffle 50 is provided at the upper end of the drying chamber, with the end of the baffle near the partition lower than the end near the side wall of the discharge door. An exhaust hole 53 is provided on the baffle 50, and a one-way valve is provided in the exhaust hole 53. The one-way valve only allows gas to flow from the space between the baffle 50 and the inclined plate 40 to the space between the baffle 50 and the top of the box body 10. The side wall of the box body 10 opposite the partition is defined as the right side wall of the box body 10. The baffle 50 includes an upper slide 52 and a lower slide 51. The upper slide 52 is provided with an upper plate slider 55. The partition is provided with a cylinder 56. The other end of the cylinder 56 is provided with a push plate 57, which is slidably connected to the upper plate slider 55.

[0027] The lower slide plate 51 is provided with a lower slide block 54. Figure 4 As shown, the front and rear sidewalls of the drying chamber 10 are symmetrically provided with horizontal chutes 58 and vertical chutes 59, with the vertical chutes 59 intersecting the horizontal chutes 58. The upper slide 55 can reciprocate left and right within the horizontal chutes 58, while the upper slide 55 can slide up and down within the vertical chutes 59 along the partitions. The lower slide 54 can slide up and down within the vertical chutes 59 along the chamber 10. An electromagnetic plate 63 is located above the lower slide 54 and is fixed to the chamber 10 via bolts. The surface of the lower slide 51 proximal to the electromagnetic plate 63 is made of a magnetic material, preferably iron. The gap between the electromagnetic plate 63 and the lower slide 54 is greater than the thickness of the upper slide 55. The inlet fan 22 is driven by a pulse motor. A push block 60 is located at the bottom of the drying chamber. The push block 60 is connected to the partitions by a spring 62. A wind plate is located at the top of the push block 60. A contact switch 61 is located on the chamber 10 opposite the push block 60 and is electrically connected to the electromagnetic plate 63.

[0028] When drying materials, the cylinder 56 pushes the push plate 57 so that the upper slide plate 52 overlaps the lower slide plate 51, and the materials are placed from the material port onto the inclined plate 40. After the materials are placed, the cylinder 56 pulls back the push plate 57, and the upper slide plate 51 is retracted along with the push plate, thereby separating the space between the inclined plate 40 and the baffle 50 and the space between the baffle 50 and the top of the drying chamber; then the heat pump 20 is turned on, and the induced fan 21 introduces fresh air from the outside, which is heated into hot air by the condenser of the heat pump 20. The hot air is introduced into the space between the baffle and the bottom of the drying chamber through the inlet fan 22, and the hot air blows towards the air plate, thereby driving the push block 60 to move toward the contact switch;

[0029] Since the inlet fan is driven by a pulse motor, the wind force of the inlet fan changes. When the wind force is strong, the push block 60 is driven to hit the contact switch, causing the contact switch to be pressed. After the contact switch is pressed, the power supply energizes the electromagnetic plate 63, making the electromagnetic plate 63 magnetic so that the lower slide plate 51 is adsorbed on the electromagnetic plate 63, and the lower slide plate 51 drives the upper slide plate 52 to move upward, and the baffle moves upward as a whole; when the wind force is weak, the spring 62 will pull the push block 60 toward the partition plate so that the push block 60 does not contact the contact switch, the contact switch is reset, the electromagnetic plate 63 is powered off, the lower slide plate 51 falls, and the baffle falls back to its original height as a whole. The space between the baffle and the inclined plate 40 becomes smaller, and the air pressure increases, so that the humid and hot gas between the baffle and the inclined plate 40 is accelerated to be discharged through the exhaust hole 53 on the baffle. Since a one-way valve is provided in the exhaust hole 53, the humid and hot air is prevented from being re-injected during the drying process.

[0030] The above is only an embodiment of the present invention, and the common knowledge such as the specific structure and characteristics of the scheme is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several variations and improvements can be made, which should also be regarded as the scope of protection of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A static multifunctional grain product drying equipment, comprising a heat pump and a drying chamber, wherein the heat pump and the drying chamber are connected via a hot air duct, characterized in that: An inlet fan is provided in the hot air duct, a material feed port is provided at the top of the drying chamber, a material transport mechanism is provided outside the material feed port, a material discharge door is provided on the side wall of the drying chamber, a return air port is provided on the side wall of the upper end of the drying chamber close to the heat pump, a return air duct is provided outside the return air port, and the other end of the return air duct is connected to the heat pump. An inclined plate is provided at the lower end of the drying chamber, a through hole is provided on the inclined plate, and an exhaust fan is provided next to the material feed port; the inclined plate is wavy or composed of a plurality of inverted V-shaped air induction plates, and the through holes are provided on the inverted V-shaped air induction plates; A baffle is provided at the upper end of the drying chamber, with one end of the baffle close to the partition lower than the end of the side wall close to the discharge door. An exhaust hole is provided on the baffle, and a one-way valve is provided in the exhaust hole. The one-way valve only allows gas to flow from the space between the baffle and the inclined plate to the space between the baffle and the top of the box body; the side wall of the box body opposite to the partition is defined as the right side wall of the box body, the baffle includes an upper slide plate and a lower slide plate, the upper slide plate is provided with an upper plate slider, the partition is provided with a cylinder, and the other end of the cylinder is provided with a push plate, and the push plate is slidably connected to the upper plate slider; The lower sliding plate is provided with a lower plate slider, and the front and rear side walls of the box are symmetrically provided with horizontal slides and vertical slides, and the vertical slides intersect with the horizontal slides; the upper plate slider can reciprocate left and right in the horizontal slide, the upper plate slider can slide up and down in the vertical slide along the partition, and the lower plate slider can slide up and down in the vertical slide along the box; an electromagnetic plate is provided above the lower plate slider, and the electromagnetic plate and the box are fixed with bolts. The side of the lower slide close to the electromagnetic plate is magnetic metal iron. The gap between the electromagnetic plate and the lower plate slider is greater than the thickness of the upper plate slider. The air inlet fan is driven by a pulse motor, and a push block is provided at the bottom of the drying chamber. The push block and the partition are connected by a spring. An air plate is provided on the upper end of the push block, and a contact switch is provided on the box opposite to the push block, and the contact switch is electrically connected to the electromagnetic plate.

2. The static multifunctional grain product drying equipment according to claim 1 is characterized in that: The width of the V-shaped opening of the inverted V-shaped air induced plate is 10 to 15 cm.

3. The static multifunctional grain product drying equipment according to claim 2, characterized in that: A filter is provided at the return air outlet, and a high-density air bag is provided at the exhaust fan jacket.

4. The static multifunctional grain product drying equipment according to claim 3 is characterized in that: The inner wall of the drying chamber is made of heat-insulating material.

5. The static multifunctional grain product drying equipment according to any one of claims 1 to 4, characterized in that: The through hole has a diameter of 2 to 5 mm.

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