A fruit and vegetable crisp vacuum oil frying unloading device

Abstract

The utility model discloses a kind of fruit and vegetable crisp piece vacuum oil frying unloading device, including unloading hopper, material frame and the top cover of the outer side even with several groups of limiting rod, unloading hopper is equipped with turnover positioning mechanism inside;The lower section of the top of unloading hopper is equipped with fixed plate, the upper section is equipped with the feed inlet that is movably connected with sealing cover and is even with several supports in upper portion, fixed plate bottom surface is equipped with air blowing device;Between the same group of limiting rod is equipped with bolt;The bottom end of bolt is rotationally connected in the outer side of material frame around material frame tangent direction, upper end is connected with lifting eye nut with lifting eye hole towards the axis of material frame;Support bottom is equipped with the first lifting piece with rotation mechanism connected at driving end and the second lifting piece with driving end connected with push plate, the driving end of rotation mechanism is connected with the knob of screwing ring nut, knob bottom is equipped with the limiting slot for ring nut and bolt upper end to pass through, unloading hopper outer side frame has the translation mechanism of driving support along the radial translation of material frame;Overall has the advantages of high unloading efficiency, good heat dissipation effect and small labor intensity.

Description

Technical Field

[0001] This utility model belongs to the technical field of vacuum frying equipment, and more specifically, it relates to a unloading device for vacuum frying fruit and vegetable crisps. Background Technology

[0002] Fruit and vegetable crisps are a general term for both fruit and vegetable crisps. They are various finished products made from fruits and vegetables as the main raw materials through vacuum frying. After the fruit and vegetable crisps are vacuum fried, the cylindrical material frame containing the crisps is taken out of the vacuum fryer by a robotic arm or crane and transported to the unloading hopper. The material frame cover is opened, and the fruit and vegetable crisps in the material frame are poured into the unloading hopper by the flipping mechanism on the unloading hopper. After that, they are transported to the packaging machine by conveyor belt for packaging. The fruit and vegetable crisps are naturally cooled to room temperature while being transported.

[0003] However, existing material frame covers are mostly bolted, and opening them usually involves manually loosening the bolts. Since the material frames are immersed in hot oil inside the vacuum fryer, their outer surface is very hot and contains a lot of residual oil. Manually opening the covers is extremely difficult due to slippage, the frame rotating, or the contents burning the hands, resulting in burns. This is time-consuming and labor-intensive, leading to low unloading efficiency and high labor intensity. Furthermore, to facilitate tipping and unloading, the top of the existing unloading hoppers is always open, allowing dust to easily fall into the hopper and mix with the residual oil poured from the frames. To avoid affecting the quality of subsequent unloaded products, the surface of the unloading hopper must be cleaned manually from time to time before unloading, resulting in high labor intensity and low unloading efficiency. In addition, during actual conveying, high temperatures slow down the natural cooling of the fruit and vegetable crisps. Relying solely on natural cooling during conveying is ineffective, and product accumulation during unloading further worsens the cooling effect. Overall, the problem persists: low unloading efficiency, poor heat dissipation, and high labor intensity. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a unloading device for vacuum frying of fruit and vegetable crisps, which integrates the functions of automatic opening of the material frame, automatic cooling and sealing of the top of the unloading hopper, and has the advantages of high unloading efficiency, good heat dissipation and low labor intensity.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A discharge device for vacuum frying fruit and vegetable crisps includes a discharge hopper, a material frame, and a top cover. The discharge hopper contains a flipping and positioning mechanism for fixing and driving the material frame to flip. A fixing plate is installed on the lower section of the top of the discharge hopper, and a feeding port for flipping the material frame is provided on the upper section. A sealing cover is movably connected to the feeding port. A blowing device is installed on the bottom surface of the fixing plate. Several sets of limiting rods are evenly installed on the outer side of the top cover, and bolts are provided between the limiting rods in the same set. The bottom end of each bolt is rotatably connected to the outside of the material frame around its tangent, and the upper end is connected to a bottom abutment. A lifting eye nut is located at the top of the limiting rod with the lifting eye hole facing the center of the material frame; several supports are evenly arranged above the feed inlet, and a first lifting component and a second lifting component are installed at the bottom of the supports. The driving end of the second lifting component is connected to a lever plate that moves the bolt outward from the material frame. The driving end of the first lifting component is connected to a rotating mechanism. The driving end of the rotating mechanism is connected to a tightening block for loosening the lifting eye nut. The bottom of the tightening block is provided with a limiting groove for the upper end of the lifting eye nut and the bolt to pass through. A translation mechanism is installed on the outside of the unloading hopper to drive the support to move radially along the material frame.

[0007] Further configuration: A positioning strip is connected to one side of the upper end of the eye nut; a positioning block is installed on the upper end face of one of the limiting rods in the same group to block the positioning strip and ensure that the eye holes of the eye nut face the center of the material frame; the distance between the upper end face of the positioning block and the upper end face of the limiting rod is less than or equal to the thickness of the eye nut, and greater than the distance between the bottom end of the positioning strip and the bottom end of the eye nut; the eye nut is positioned with its eye limited within the limiting groove.

[0008] Further configuration: The bottom of the screw block is provided with a guide groove with a trapezoidal vertical cross section, the top of the guide groove is connected to the limiting groove, and the groove wall of the limiting groove is provided with anti-slip texture.

[0009] Further configuration: The translation mechanism is a first linear guide rail, the bracket is inverted L-shaped, the slider of the first linear guide rail is fixedly connected to the bottom of the vertical section of the bracket; a stepper motor is installed on one side of the first linear guide rail to drive its slider to translate radially along the material frame, sliding rods are connected to both sides of the lower end of the dial plate, the sliding rods slide up and down and are connected to both sides of the vertical section of the bracket, the screw block is located between the vertical section of the bracket and the dial plate, and the first lifting component and the second lifting component are both installed on the horizontal section of the bracket.

[0010] Further configuration: The first lifting component consists of an electric push rod and a connecting plate. The top rod of the electric push rod is detachably and fixedly connected to the rotating mechanism through the connecting plate. Guide rods are provided on both sides of the connecting plate. A set of guide holes are provided on the horizontal section of the bracket. The guide rods pass through the guide holes and are connected to a stop block located above the horizontal section of the bracket at their top.

[0011] Further configuration: A first motor is installed on one side of the unloading hopper to drive the sealing cover to rotate and open, and sealing rings are connected to the four sides of the bottom end face of the sealing cover.

[0012] Further configuration: The unloading hopper includes a front plate, a rear plate, a bottom plate inclined downwards towards the front plate, and two side plates. The side plates are respectively installed on both sides of the bottom plate. The rear plate and the front plate are respectively installed on the front and rear sides of the bottom plate. The bottom of the front plate is provided with a discharge port, which is detachably connected to a cover plate. A cooling coil is installed at the bottom of the bottom plate. The water outlet pipe of the cooling coil is connected to a cooling tank. The water outlet pipe of the cooling tank is connected to a water storage tank. The water outlet of the water storage tank is connected to the water inlet of the cooling coil by a water inlet pipe. The water inlet pipe is connected to a first water pump.

[0013] Further configuration: The flipping positioning mechanism includes a rotating shaft, a positioning shaft, and a positioning disk. The two ends of the rotating shaft are rotatably connected to the two side plates respectively. A second motor for driving the rotating shaft to rotate is installed outside the side plates. The positioning shaft is vertically installed on the side of the rotating shaft. A pin is provided at the top of the positioning shaft. A bushing for the positioning shaft to pass through is provided in the middle of the bottom of the material frame. The top of the bushing passes through the top cover, and a hole for the pin to pass through is opened on the side. Positioning blocks are evenly arranged on the upper surface of the positioning disk. Several slots for the positioning blocks to be inserted are evenly opened on the bottom of the material frame.

[0014] Further configuration: The bottom of the rear plate is provided with a cleaning port and a sealing plate for sealing the cleaning port. A third motor for driving the sealing plate to rotate and open is installed on the outside of the rear plate. Both the cleaning port and the liquid spray pipe are used to spray water and liquid from the cleaning port toward the surface of the bottom plate and are provided with long nozzles. The liquid spray pipe is connected to a first water supply pipe with an electric valve. The first water supply pipe is connected to a mixing tank containing a mixture of cleaning agent and water and with a cover. The water inlet of the mixing tank and the water outlet of the cooling tank are connected to a water replenishment pipe with an electric valve. The water replenishment pipe is connected to a second water pump. The water spray pipe is located above the liquid spray pipe and is connected to a second water supply pipe connected to an external water source. Both the first water supply pipe and the second water supply pipe are connected to a high-pressure water pump.

[0015] Further configuration: The bottom of the base plate is connected to an arc-shaped buffer plate. The front section of the buffer plate has several filter holes for filtering fruit and vegetable chip fragments. A waste box is provided below the front end of the buffer plate. A scraper is hung on one side of the unloading hopper. A long rod is connected to one side of the scraper.

[0016] In summary, this utility model achieves automatic sealing of the top of the unloading hopper through a sealing cover and a first motor; it uses a flipping positioning mechanism to fix and drive the material frame to flip and unload; through multiple screw blocks, limiting grooves, a first lifting component, and a rotating mechanism, the first lifting component is activated, and its driving end drives the rotating mechanism and screw blocks to descend together until the upper end of the lifting eye nut and bolt passes through the limiting groove of the screw block, at which point the first lifting component stops descending; the external controller then controls the rotating mechanism to start, and simultaneously controls the first lifting component to rise, so that the screw blocks drive the lifting eye nut to rotate upwards until the screw blocks loosen the lifting eye nut to a preset height position, at which point the first lifting component continues to drive the screw blocks away from the lifting eye nut, and together with the rotating mechanism... Once the lifting mechanism returns to its original position, multiple lifting eye nuts can be automatically loosened simultaneously. Through the second lifting component, translation mechanism, and lever, the second lifting component first lowers the lever to a preset height, then activates the translation mechanism, causing the support to move radially away from the material frame. This causes the lever to rotate the bolts and lifting eye nuts outwards from the material frame until they are completely separated from the limit rods. Under gravity, the bolts and lifting eye nuts continue to rotate downwards until the lifting eye bolts are facing downwards. The translation mechanism then continues to move the support, rotation mechanism, first lifting component, second lifting component, lever, and screw block back to their initial position outside the feed inlet, thus achieving automatic lid opening. A blowing device automatically dissipates heat and cools the fruit and vegetable chips.

[0017] This utility model integrates the functions of automatically opening the material frame, automatically cooling, and sealing the top of the unloading hopper, and has the advantages of high unloading efficiency, good heat dissipation, and low labor intensity. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0019] Figure 2 This is a partial structural diagram of the opening portion of an embodiment of the present utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the loosening eye nut part in an embodiment of this utility model;

[0021] Figure 4 This is a side view of the eye nut in the embodiment of this utility model, with the nut not loosened.

[0022] Figure 5 This is a schematic diagram of the structure of the pull plate in the embodiment of the present invention, showing the state of loosening the lifting ring nut;

[0023] Figure 6 This is a structural schematic diagram of the positioning and locking state of the eye nut and bolt in an embodiment of this utility model;

[0024] Figure 7This is a partial exploded view of an embodiment of the present utility model;

[0025] Figure 8 This is a schematic diagram of the material frame structure in an embodiment of the present invention;

[0026] Figure 9 This is a schematic diagram of the cooling coil structure in an embodiment of the present invention;

[0027] Figure 10 This is a partial cross-sectional view of an embodiment of the present utility model;

[0028] Figure 11 This is a partial cross-sectional view of the spray pipe and the water spray pipe in the embodiment of this utility model.

[0029] In the diagram: 1. Unloading hopper; 2. Material frame; 3. Top cover; 4. Fixing plate; 5. Sealing cover; 6. Feed inlet; 7. Blowing device; 8. Limiting rod; 9. Bolt; 10. Lifting eye nut; 11. Bracket; 12. First lifting component; 13. Second lifting component; 14. Pulley; 15. Rotating mechanism; 16. Tightening block; 17. Limiting groove; 18. Positioning strip; 19. Positioning block; 20. Guide groove; 21. Waste box; 22. Translation mechanism; 23. Scraper; 24. Long rod; 25. Sliding rod; 26. Electric push rod; 27. Connecting plate; 28. Guide rod; 29. ​​Base plate; 30. Stop block; 31. First motor; 32. 33. Front plate; 34. Rear plate; 35. Side plate; 36. Discharge port; 37. Cover plate; 38. Cooling coil; 39. Cooling box; 40. Water storage tank; 41. Water inlet pipe; 42. First water pump; 43. Rotating shaft; 44. Positioning shaft; 45. Positioning plate; 46. Second motor; 47. Pin; 48. Bushing; 49. Insertion hole; 50. Positioning block; 51. Slot; 52. Cleaning port; 53. Sealing plate; 54. Third motor; 55. Spray pipe; 56. Liquid spray pipe; 57. First water supply pipe; 58. Mixing box; 59. Water replenishment pipe; 60. Second water pump; 61. Second water supply pipe; 62. Buffer plate; 63. Filter hole. Detailed Implementation

[0030] To explain the technical content, objectives, and effects of this utility model in detail, the following description is provided in conjunction with the embodiments and accompanying drawings. It should be noted that the terms "upper" and "lower" used in the following description refer to the attached drawings. Figure 4 The direction in the middle, the words "bottom" and "top" refer to the attached Figure 4 The direction towards the geometric center of a specific component.

[0031] Please refer to Figures 1 to 11 As shown, the embodiment of this utility model is as follows:

[0032] A discharge device for vacuum frying fruit and vegetable crisps includes a discharge hopper 1, a material frame 2, and a top cover 3. The discharge hopper 1 is equipped with a flipping and positioning mechanism that fixes and drives the material frame 2 to flip. A fixing plate 4 is installed on the lower section of the top of the discharge hopper 1, and a feeding port 6 for flipping the material frame 2 is provided on the upper section. A sealing cover 5 is movably connected to the feeding port 6. A blowing device 7 is installed on the bottom surface of the fixing plate 4. Several sets of limiting rods 8 are evenly installed on the outer side of the top cover 3, and bolts 9 are provided between the limiting rods 8 in the same set. The bottom end of the bolt 9 is rotatably connected to the outside of the material frame 2 around the tangent direction of the material frame 2, and the upper end is connected to a ring that rests against the top of the limiting rod 8 with the lifting eye facing upwards. The lifting nut 10 is located at the axis of the material frame 2; several supports 11 are evenly arranged above the feed inlet 6. The bottom of the supports 11 is equipped with a first lifting component 12 and a second lifting component 13. The driving end of the second lifting component 13 is connected to a lever 14 that moves the bolt 9 outward from the material frame 2. The driving end of the first lifting component 12 is connected to a rotating mechanism 15. The driving end of the rotating mechanism 15 is connected to a tightening block 16 for loosening the lifting nut 10. The bottom of the tightening block 16 is provided with a limiting groove 17 for the upper end of the lifting nut 10 and the bolt 9 to pass through. A translation mechanism 22 is provided on the outside of the unloading hopper 1 to drive the supports 11 to move radially along the material frame 2.

[0033] As described above, when an external robotic arm or trolley transports the material frame 2 to the feed inlet 6, firstly, the sealing cover 5 is opened, and the material frame 2 is positioned and fixed by the flipping positioning mechanism; then, multiple translation mechanisms 22 are simultaneously activated. The driving end of the translation mechanism 22 drives the corresponding bracket 11, rotating mechanism 15, first lifting component 12, second lifting component 13, lever 14, and screw block 16 to move radially towards the axis of the material frame 2 until all screw blocks 16 are directly above the corresponding lifting nut 10; then, the first lifting component 12 is activated, and the driving end of the first lifting component 12 drives the rotating mechanism 15 and screw block 16 to descend together until... The upper ends of the eye nut 10 and bolt 9 pass through the limiting groove 17 of the tightening block 16, and the first lifting member 12 stops descending. Then, the external controller controls the rotation mechanism 15 to start, and at the same time controls the first lifting member 12 to rise, so that the tightening block 16 drives the eye nut 10 to rotate upward until the tightening block 16 loosens the eye nut 10 to the preset height position. At this time, the tightening block 16 is still connected to the bolt 9. The rotation mechanism 15 stops rotating, and the first lifting member 12 continues to drive the tightening block 16 to move upward until the tightening block 16 leaves the eye nut 10 and rises and resets to the original position together with the rotation mechanism 15, thus realizing the function of automatically loosening the eye nut 10.

[0034] Bolt 9, having lost its locking function, can be pushed outwards from the material frame 2 with minimal force. At this point, the second lifting component 13 is activated, causing the lever 14 to descend to a preset height. The second lifting component 13 then stops working. At this time, the bottom end of the lever 14 is located between the upper surface of the top cover 3 and the bottom of the eye nut 10. Next, the translation mechanism 22 is activated. The drive end of the translation mechanism 22 drives the corresponding bracket 11, rotation mechanism 15, first lifting component 12, second lifting component 13, lever 14, and tightening block 16 to move radially away from the axis of the material frame 2 until the lever 14 rotates the bolt 9 and eye nut 10 outwards from the material frame 2, until the bolt 9 and eye nut 10 are aligned. When the mother 10 leaves the limit rod 8 of the same group, under the action of gravity, the bolt 9 and the eye nut 10 continue to rotate downward until the eye bolt 9 is downward. The translation mechanism 22 continues to drive the bracket 11 to translate, and the rotation mechanism 15, the first lifting component 12, the second lifting component 13, the lever 14 and the screw block 16 are translated and reset to the initial position outside the feed port 6. After that, the second lifting component 13 drives the lever 14 to reset. The top cover 3 that has been unlocked can be separated from the material frame 2 by using a crane or a robot. After that, the flipping positioning mechanism drives the material frame 2 to flip towards the bottom plate 29. The fruit and vegetable crisps in the material frame 2 fall into the unloading hopper 1. The blowing device 7 can realize the automatic heat dissipation of the fruit and vegetable crisps.

[0035] Furthermore, a positioning strip 18 is connected to one side of the upper end of the eye nut 10; a positioning block 19 is installed on the upper end face of one of the limiting rods 8 in the same group to block the positioning strip 18 and ensure that the eye holes of the eye nut 10 are all facing the axis of the material frame 2; the distance between the upper end face of the positioning block 19 and the upper end face of the limiting rod 8 is less than or equal to the thickness a of the nut of the eye nut 10, and greater than the distance between the bottom end of the positioning strip 18 and the bottom end of the nut of the eye nut 10, and the eye nut 10 is only placed in the limiting groove 17 for eye limiting.

[0036] As can be seen from the above description, during the tightening of the eye nut 10, when the bottom of the eye nut 10 has already abutted against or is about to abut against the upper end face of the limit rod 8, the positioning block 19 blocks the positioning strip 18 to rotate, so that the eye holes of the eye nut 10 are all facing the axis of the material frame 2.

[0037] Furthermore, the bottom of the screw block 16 is provided with a guide groove 20 with a trapezoidal vertical cross section. The top of the guide groove 20 communicates with the limiting groove 17. The groove wall of the limiting groove 17 is provided with anti-slip texture (not shown in the figure).

[0038] As can be seen from the above description, the guide groove 20 facilitates the more accurate entry of the lifting ring of the lifting eye nut 10 into the limiting groove 17. The anti-slip texture increases the friction between the groove wall of the limiting groove 17 and the lifting ring of the lifting eye nut 10, further increasing the force of the tightening block 16 in tightening the lifting ring of the lifting eye nut 10, thereby further improving the opening efficiency of the material frame 2 and the overall unloading efficiency.

[0039] Furthermore, the translation mechanism 22 is a first linear guide rail, the bracket 11 is arranged in an inverted L shape, the slider of the first linear guide rail is fixedly connected to the bottom of the vertical section of the bracket 11; a stepper motor that drives its slider to translate radially along the material frame 2 is installed on one side of the first linear guide rail, the two sides of the lower end of the lever 14 are connected to the sliding rod 25, the sliding rod 25 slides up and down and is connected to the two sides of the vertical section of the bracket 11, the screw block 16 is located between the vertical section of the bracket 11 and the lever 14, and the first lifting component 12 and the second lifting component 13 are both installed on the horizontal section of the bracket 11.

[0040] As described above, before or after loosening the eye bolt 9, when the lever 14 needs to be moved to move the unlocked bolt 9 away from the limit rods 8, the second lifting component 13 is activated first, causing the lever 14 to descend to the preset height. Then, the stepper motor of the first linear guide is activated, causing the slider of the linear guide to move radially towards or away from the axis, central axis, or center of the material frame 2, until the first lifting component 12, the rotating mechanism 15, the second lifting component 13, the screw block 16, and the lever 14 all enter the feed inlet 6. 16 is located directly above the lifting eye nut 10, or the first lifting component 12, the rotating mechanism 15, the second lifting component 13, the screw block 16, and the lever plate 14 are all moved and reset to leave the range of the feed inlet 6; the sliding rod 25 is used to ensure the force of the lever plate 14 when it pushes the bolt 9 outward, so that the lever plate 14 can quickly push the bolt 9 outward from between the limit rods 8, thereby further improving the opening efficiency of the material frame 2 and reducing the labor intensity of opening the cover. At the same time, when the second lifting component 13 drives the lever plate 14 to rise and fall, it further ensures the stability of the rise and fall.

[0041] Furthermore, the first lifting component 12 consists of an electric push rod 26 and a connecting plate 27. The top rod of the electric push rod 26 is detachably and fixedly connected to the rotating mechanism 15 through the connecting plate 27. Guide rods 28 are provided on both sides of the connecting plate 27. A set of guide holes are provided on the horizontal section of the bracket 11. The guide rods 28 pass through the guide holes and are connected to a stop block 30 located above the horizontal section of the bracket 11 at the top.

[0042] As described above, when it is necessary to loosen the eye nut 10 upwards, the rotating mechanism 15 drives the tightening block 16 to rotate, while the external controller (not shown in the figure, the same throughout the text) controls the electric push rod 26 to start. The drive end of the electric push rod 26 retracts, driving the connecting plate 27 and the rotating mechanism 15 to rise, thereby driving the tightening block 16 to rotate upwards to loosen the eye nut 10. After rising to a preset height value, the rotating mechanism 15 stops rotating, and the electric push rod 26 continues to drive the connecting plate 27 and the tightening block 16 to move upwards until the tightening block 16 completely leaves the eye nut 10. The tightening block 16 and the rotating mechanism 15 then return to their initial positions. During this process, the guide rod 28 moves vertically upwards or downwards within the guide hole to ensure that the connecting plate 27, the rotating mechanism 15, and the tightening block 16 can move upwards or downwards in a directional manner, ensuring the stability of the rotation and lifting of the tightening block 16. The stop block 30 prevents the guide rod 28 from sliding out of the guide hole.

[0043] Furthermore, a first motor 31 is installed on one side of the unloading hopper 1 to drive the sealing cover 5 to rotate and open. The bottom surface of the sealing cover 5 is connected with sealing rings on all four sides (not shown in the figure, as in the entire text).

[0044] As can be seen from the above description, by starting the first motor 31, when unloading is required, the drive end of the first motor 31 drives the sealing cover 5 to rotate outward in a direction away from the feed inlet 6. When unloading is not required, the drive end of the first motor 31 drives the sealing cover 5 to rotate in a direction closer to the feed inlet 6 until the sealing cover 5 re-seals the feed inlet 6, thus realizing the function of the self-opening and closing sealing cover 5. Through the sealing ring, dust is further prevented from entering the unloading hopper 1 from the gap between the sealing cover 5 and the feed inlet 6, which further ensures the sealing of the top of the unloading hopper 1.

[0045] Furthermore, the unloading hopper 1 includes a front plate 32, a rear plate 33, a bottom plate 29 inclined downward toward the front plate 32, and two side plates 34. The side plates 34 are respectively installed on both sides of the bottom plate 29. The rear plate 33 and the front plate 32 are respectively installed on the front and rear sides of the bottom plate 29. The bottom of the front plate 32 is provided with a discharge port 35. The discharge port 35 is detachably connected to a cover plate 36. The bottom of the bottom plate 29 is equipped with a cooling coil 37. The water outlet pipe of the cooling coil 37 is connected to a cooling box 38. The water outlet pipe of the cooling box 38 is connected to a water storage tank 39. The water outlet of the water storage tank 39 is connected to the water inlet of the cooling coil 37 by a water inlet pipe 40. The water inlet pipe 40 is connected to a first water pump 41.

[0046] As described above, the cooling coil 37, water inlet pipe 40, cooling tank 38, water storage tank 39, and first water pump 41 are connected. The first water pump 41 is activated, and cold water from the water storage tank 39 is transported to the cooling coil 37 via the water inlet pipe 40. The cooling coil 37 exchanges heat with the bottom plate 29 to cool the bottom plate 29. The cooled bottom plate 29 further cools the fruit and vegetable crisps, improving their heat dissipation. The cover plate 36 and discharge port 35 allow for detachable installation of the cover plate 36 at the discharge port 35 when unloading is not required, preventing dust from entering the unloading hopper 1 and reducing the frequency of manual cleaning. When unloading is required, the cover plate 36 can be removed from the discharge port 35.

[0047] Furthermore, the flipping positioning mechanism includes a rotating shaft 42, a positioning shaft 43, and a positioning disk 44. The two ends of the rotating shaft 42 are rotatably connected to the two side plates 34 respectively. A second motor 45 for driving the rotating shaft 42 to rotate is installed on the outside of the side plates 34. The positioning shaft 43 is vertically installed on the side of the rotating shaft 42. A pin 46 is provided at the top of the positioning shaft 43. A bushing 47 for the positioning shaft 43 to pass through is provided in the middle of the bottom of the material frame 2. The top of the bushing 47 passes through the top cover 3, and the side has a hole 48 for the pin 46 to pass through. Positioning blocks 49 are evenly arranged on the upper surface of the positioning disk 44. Several slots 50 for the positioning blocks 49 to be inserted are evenly arranged on the bottom of the material frame 2.

[0048] As described above, when the external robotic arm or gantry crane transports the material frame 2 to above the feed inlet 6, the sealing cover 5 is opened, and the second motor 45 is started. The drive end of the second motor 45 rotates, driving the rotating shaft 42 to rotate, thereby driving the positioning shaft 43 to rotate upwards until the positioning shaft 43 is vertical, that is, the positioning shaft 43 is placed perpendicular to the fixed plate 4 (or the ground). The pin 46 of the positioning shaft 43 is pulled out in advance, and the external robotic arm or gantry crane places the material frame 2 on the positioning shaft 43, through which it passes to the shaft. The sleeve 47 serves as the initial positioning tool for the material frame 2. The positioning block 49 on the positioning plate 44 is inserted into the slot 50 to perform secondary positioning of the material frame 2. The positioning block 49 and the positioning shaft 43 are precisely positioned, which can be achieved by automatic positioning by an external robot or manual positioning. After the material frame 2 is locked to the top cover 3, the pin 46 is inserted through the insertion hole 48 to fix the top of the sleeve 47 to the positioning shaft 43 for a second time. Then, the second motor 45 can be started again to drive the material frame 2 to flip and pour the material.

[0049] Furthermore, the bottom of the rear plate 33 is provided with a cleaning port 51 and a sealing plate 52 for sealing the cleaning port 51. A third motor 53 for driving the sealing plate 52 to rotate and open is installed on the outside of the rear plate 33. Both are water spray pipes 54 and liquid spray pipes 55, which are used to spray water from the cleaning port 51 onto the surface of the bottom plate 29 and are provided with long nozzles. The liquid spray pipe 55 is connected to a first water supply pipe 56 with an electric valve. The first water supply pipe 56 is connected to a mixing tank 57 containing a mixture of cleaning agent and water and with a cover. The water inlet of the mixing tank 57 is connected to the water outlet of the cooling tank 38 with a water replenishment pipe 58 with an electric valve. The water replenishment pipe 58 is connected to a second water pump 59. The water spray pipe 54 is located above the liquid spray pipe 55 and is connected to a second water supply pipe 60 connected to an external water source. Both the first water supply pipe 56 and the second water supply pipe 60 are connected to a high-pressure water pump (not shown in the figure, the same throughout the text).

[0050] As described above, when the unloading operation is not underway and the bottom plate 29 needs to be cleaned periodically, the high-pressure water pump of the first water supply pipe 56 is first started. The high-pressure water pump delivers the mixture of cleaning agent and water in the mixing tank 57 to the spray pipe 55 through the first water supply pipe 56. The mixture is then sprayed onto the upper surface of the bottom plate 29 through the long nozzle of the spray pipe 55. The workers then manually use the cleaning tool with the long pole 24 to scrub the upper surface of the bottom plate 29 or the side plate 34. This avoids the need to manually pour the mixture of cleaning agent and water from time to time during the scrubbing process, further reducing the intensity of manual labor. After the scrubbing is completed, the high-pressure water pump of the second water supply pipe 60 is started to draw water from the external water source into the spray pipe 54. The clean water sprayed from the long nozzle of the spray pipe 54 onto the upper surface of the bottom plate 29 is used for the final rinsing of the bottom plate 29. The side plate 34 can be scrubbed with the help of other cleaning tools, thus achieving the semi-automatic cleaning of the bottom plate 29 of the unloading hopper 1.

[0051] When water needs to be added to the mixing tank 57, the second water pump 59 is activated to transport the higher-temperature water stored in the cooling tank 38 that is about to flow out of the cooling pipe to the mixing tank 57, thereby improving the water recycling rate. At the same time, the higher water temperature allows for faster mixing with the cleaning agent. When the cleaning agent needs to be added to the mixing tank 57, simply open the lid of the mixing tank 57 and put the cleaning agent in. In addition, it should be noted that the cleaning agent of this application can be a solid cleaning agent in powder or granule form, or a liquid cleaning agent such as dish soap or disinfectant. These are all prior art and will not be described in detail here.

[0052] Furthermore, the bottom of the base plate 29 is connected to a buffer plate 61 with an arc shape. The front section of the buffer plate 61 has several filter holes 62 for filtering fruit and vegetable chip fragments. A waste box 21 is provided below the front end of the buffer plate 61. A scraper 23 is hung on one side of the unloading hopper 1. A long rod 24 is connected to one side of the scraper 23.

[0053] As described above, the buffer plate 61 slows down the falling speed of the fruit and vegetable crisps that slide to the bottom of the base plate 29, preventing the crisps from falling too fast onto the conveyor at the front end of the packaging process, which could cause them to collide and be damaged. At the same time, the filter holes 62 filter the debris that slides down with the crisps, and the debris falls into the waste box 21. When it is necessary to clean the oil, residual debris, or residual water on the upper surface of the base plate 29, one only needs to manually grab the long rod 24 and use the scraper 23 to scrape from top to bottom on the upper surface of the base plate 29 until it reaches the filter holes 62, where it falls into the waste box 21, thus facilitating the cleaning of the base plate 29.

[0054] It should also be noted that the blowing device 7 in this embodiment is an electric fan, and is not limited to this blowing structure. Any other blowing structure that can blow cold air into the unloading hopper 1 to dissipate heat and cool the fruit and vegetable crisps on the bottom plate 29 is acceptable. The rotating mechanism 15 in this embodiment is a motor, reducer, and drive shaft, or it can be a modified electric screwdriver with the screwdriver head removed. It is not limited to the above-mentioned rotating drive structure, as long as it can drive the screwdriver block 16 to loosen the lifting nut 10. The second lifting component 13 in this embodiment is an electric push rod 26 or a lifting cylinder. It is not limited to the above-mentioned lifting drive structure. Any other structure that can drive the lever plate 14 to rise and fall is acceptable.

[0055] In summary, compared with the prior art, this utility model has the advantages of high unloading efficiency, good heat dissipation, and low labor intensity. By using multiple translation mechanisms 22, brackets 11, tightening blocks 16, limiting grooves 17, first lifting components 12, and rotating mechanisms 15, the translation mechanism 22 first moves the tightening blocks 16, the first lifting components 12, and the rotating mechanism 15 to above the corresponding lifting eye nut 10. The first lifting component 12 then moves the rotating mechanism 15 and the tightening blocks 16 down together until the upper end of the lifting eye nut 10's lifting eye and bolt 9 is located within the limiting groove 17. An external controller then controls the rotating mechanism 15 to start, simultaneously controlling the first lifting component 12 to rise. The tightening block 16 rotates and rises simultaneously, causing the lifting eye nut 10 to rotate upwards until the tightening block 16 loosens the lifting eye nut 10 to a preset height, thus achieving the desired result. The system automatically loosens multiple lifting ring nuts 10 simultaneously. After the first lifting component 12 continues to drive the screw block 16 to rise and reset, the second lifting component 13, the translation mechanism 22, and the lever 14 drive the lever 14 to descend to a preset height. Then, the translation mechanism 22 drives the bracket 11 to reset and translate. At the same time, the lever 14 moves the bolt 9 and the lifting ring nut 10 together toward the same group of limit rods 8. Under the action of gravity, the bolt 9 drives the lifting ring nut 10 to rotate downward toward the outside of the material frame 2 until the lifting ring bolt 9 faces downward, thus achieving the function of automatically opening the cover. The sealing cover 5 and the first motor 31 achieve the function of automatically sealing the top of the unloading hopper 1. The flipping positioning mechanism fixes and drives the material frame 2 to flip and unload the material. The blowing device 7 automatically dissipates heat from the fruit and vegetable chips.

[0056] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A discharge device for vacuum frying fruit and vegetable crisps, characterized in that: The device includes a discharge hopper, a material frame, and a top cover. The discharge hopper contains a tilting and positioning mechanism that fixes and drives the material frame to tilt. A fixing plate is installed on the lower section of the top of the discharge hopper, and a feeding port for tilting the material frame is provided on the upper section. A sealing cover is movably connected to the feeding port. A blowing device is installed on the bottom surface of the fixing plate. Several sets of limiting rods are evenly installed on the outer side of the top cover, and bolts are provided between the limiting rods in the same set. The bottom end of each bolt is rotatably connected to the outside of the material frame around its tangent, and the upper end is connected to a bolt whose bottom rests against the top of the limiting rod and is suspended from it. The eye nut has an annular hole facing the center of the material frame; several supports are evenly arranged above the feed inlet, and a first lifting component and a second lifting component are installed at the bottom of the supports. The driving end of the second lifting component is connected to a lever plate that moves the bolt outward from the material frame. The driving end of the first lifting component is connected to a rotating mechanism. The driving end of the rotating mechanism is connected to a tightening block for loosening the eye nut. The bottom of the tightening block has a limiting groove for the upper end of the eye nut and the bolt to pass through. A translation mechanism that drives the support to move radially along the material frame is mounted on the outside of the unloading hopper.

2. The unloading device for vacuum frying fruit and vegetable crisps according to claim 1, characterized in that: A positioning strip is connected to one side of the upper end of the eye nut; a positioning block is installed on the upper end face of one of the limiting rods in the same group to block the positioning strip and ensure that the eye holes of the eye nut face the center of the material frame; the distance between the upper end face of the positioning block and the upper end face of the limiting rod is less than or equal to the thickness of the eye nut, and greater than the distance between the bottom end of the positioning strip and the bottom end of the eye nut, and the eye nut is only placed in the limiting groove for eye limiting.

3. The unloading device for vacuum frying fruit and vegetable crisps according to claim 2, characterized in that: The bottom of the screw block is provided with a guide groove with a trapezoidal vertical cross section. The top of the guide groove is connected to the limiting groove. The groove wall of the limiting groove is provided with anti-slip texture.

4. The unloading device for vacuum frying fruit and vegetable crisps according to claim 1, characterized in that: The translation mechanism is a first linear guide rail, and the bracket is arranged in an inverted L shape. The slider of the first linear guide rail is fixedly connected to the bottom of the vertical section of the bracket. A stepper motor that drives its slider to translate radially along the material frame is installed on one side of the first linear guide rail. Sliding rods are connected to both sides of the lower end of the lever plate. The sliding rods slide up and down and are connected to both sides of the vertical section of the bracket. The screw block is located between the vertical section of the bracket and the lever plate. The first lifting component and the second lifting component are both installed on the horizontal section of the bracket.

5. The unloading device for vacuum frying fruit and vegetable crisps according to claim 4, characterized in that: The first lifting component consists of an electric push rod and a connecting plate. The top rod of the electric push rod is detachably and fixedly connected to the rotating mechanism through the connecting plate. Guide rods are provided on both sides of the connecting plate. A set of guide holes are opened in the horizontal section of the bracket. The guide rods pass through the guide holes and are connected to a stop block located above the horizontal section of the bracket at their top.

6. The unloading device for vacuum frying fruit and vegetable crisps according to claim 1, characterized in that: A first motor is installed on one side of the unloading hopper to drive the sealing cover to rotate and open, and sealing rings are connected to the four sides of the bottom surface of the sealing cover.

7. The unloading device for vacuum frying fruit and vegetable crisps according to claim 1, characterized in that: The unloading hopper includes a front plate, a rear plate, a bottom plate inclined downwards towards the front plate, and two side plates. The side plates are respectively installed on both sides of the bottom plate. The rear plate and the front plate are respectively installed on the front and rear sides of the bottom plate. The bottom of the front plate is provided with a discharge port, which is detachably connected to a cover plate. A cooling coil is installed at the bottom of the bottom plate. The water outlet pipe of the cooling coil is connected to a cooling tank. The water outlet pipe of the cooling tank is connected to a water storage tank. The water outlet of the water storage tank is connected to the water inlet of the cooling coil by a water inlet pipe. The water inlet pipe is connected to a first water pump.

8. The unloading device for vacuum frying fruit and vegetable crisps according to claim 7, characterized in that: The flipping and positioning mechanism includes a rotating shaft, a positioning shaft, and a positioning disk. The two ends of the rotating shaft are rotatably connected to the two side plates respectively. A second motor for driving the rotating shaft to rotate is installed on the outside of the side plates. The positioning shaft is vertically installed on the side of the rotating shaft. A pin is inserted through the top of the positioning shaft. A bushing for the positioning shaft to pass through is provided in the middle of the bottom of the material frame. The top of the bushing passes through the top cover and has a hole for the pin to pass through on its side. Positioning blocks are evenly arranged on the upper surface of the positioning disk. Several slots for the positioning blocks to be inserted are evenly arranged on the bottom of the material frame.

9. The unloading device for vacuum frying fruit and vegetable crisps according to claim 7, characterized in that: The bottom of the rear plate is provided with a cleaning port and a sealing plate for sealing the cleaning port. A third motor for driving the sealing plate to rotate and open is installed on the outside of the rear plate. Both the cleaning port and the liquid spray pipe are used to spray water and liquid from the cleaning port toward the surface of the bottom plate and are provided with long nozzles. The liquid spray pipe is connected to a first water supply pipe with an electric valve. The first water supply pipe is connected to a mixing tank containing a mixture of cleaning agent and water and with a cover. The water inlet of the mixing tank and the water outlet of the cooling tank are connected to a water replenishment pipe with an electric valve. The water replenishment pipe is connected to a second water pump. The water spray pipe is located above the liquid spray pipe and is connected to a second water supply pipe connected to an external water source. Both the first water supply pipe and the second water supply pipe are connected to a high-pressure water pump.

10. The unloading device for vacuum frying fruit and vegetable crisps according to claim 7, characterized in that: The bottom of the base plate is connected to an arc-shaped buffer plate. The front section of the buffer plate has several filter holes for filtering fruit and vegetable chip fragments. A waste box is located below the front end of the buffer plate. A scraper is hung on one side of the unloading hopper, and a long rod is connected to one side of the scraper.

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