A pretreatment device for food detection samples

Abstract

The present invention belongs to the technical field of food processing devices, and particularly relates to a pretreatment device for food detection samples. It includes a processing shell, an inlet is arranged on the upper side of the processing shell, a sealing door is rotatably connected at the inlet of the processing shell, a discharge pipe is communicated with the lower part of the processing shell, a motor is installed in the lower part of the processing shell, an air outlet platform is fixedly connected in the lower part of the processing shell, the air outlet platform is located above the motor, a fixed shaft is fixedly connected to the upper part of the processing shell, a spiral stirring member is rotatably and slidably connected to the fixed shaft, the spiral stirring member is fixedly connected with a rotating shaft, the rotating shaft is fixedly connected with a first cutting knife, and a second cutting knife is rotatably connected to the upper side of the air outlet platform. By the cooperation of the forward rotation of the first cutting knife and the reverse rotation of the second cutting knife, the fructose products on the upper side of the air outlet platform are chopped, the particle size of the fructose products is reduced, and the fructose products are uniformly contacted with water, thereby accelerating the melting speed of the fructose products.

Description

Technical Field

[0001] The present invention belongs to the technical field of food processing devices, and particularly relates to a pretreatment device for food detection samples. Background Art

[0002] Fructose is a naturally occurring sugar with the highest sugar content among all monosaccharides. It mainly exists in fruits. Because fructose has a unique flavor and metabolic characteristics, it is widely used in the food industry. Before using fructose products to make food, that is, when fructose products are just produced, it is necessary to conduct safety inspections on fructose products to determine whether these fructose products can be eaten. Before detecting fructose products, it is necessary to pre-treat fructose products in advance, that is, dissolve fructose in water, and then detect the fructose solution. The existing pretreatment method is just to put fructose in water and then wait for fructose to dissolve. However, since the natural dissolution rate of fructose is slow, a large amount of time will be wasted during the process of waiting for fructose to dissolve, affecting the detection efficiency of fructose products. Summary of the Invention

[0003] Based on the technical problems mentioned in the above background art, the present invention provides a pretreatment device for food detection samples.

[0004] The technical implementation plan of the present invention is: a pretreatment device for food detection samples, including a processing shell. A feed inlet is provided on the upper side of the processing shell. A sealing door is rotatably connected to the feed inlet of the processing shell. A discharge pipe is communicated with the lower part of the processing shell. A motor is installed in the lower part of the processing shell. An air outlet platform is fixedly connected in the lower part of the processing shell. The air outlet platform is located above the motor. A fixed shaft is fixedly connected to the upper part of the processing shell. A spiral stirring member is rotatably and slidably connected to the fixed shaft. The spiral stirring member is fixedly connected with a rotating shaft. The rotating shaft is driven by a gear set between the output shaft of the motor. The rotating shaft is fixedly connected with a first cutting knife. A second cutting knife is rotatably connected to the upper side of the air outlet platform. The second cutting knife is rotatably and slidably connected to the rotating shaft. The rotating shaft and the second cutting knife are driven by a planetary gear set. The first cutting knife is located above the second cutting knife.

[0005] Furthermore, the orientations of adjacent cutting edges on the first cutting knife and the second cutting knife are opposite.

[0006] Furthermore, a sealing plate is rotatably connected in the air outlet platform. The sealing plate is fixedly connected with the second cutting knife. A gas pump is installed in the lower part of the processing shell and is located below the air outlet platform. A first ventilation pipe is communicated between the gas pump and the air outlet platform. A second ventilation pipe is rotatably and slidably connected between the gas pump and the rotating shaft.

[0007] Further, a connecting frame is fixedly connected to the lower side of the rotating shaft, a first threaded sleeve located below the air outlet table is fixedly connected to the second ventilation pipe, and the connecting frame is threadedly connected to the first threaded sleeve.

[0008] Further, it further includes symmetrically distributed fixed pipes. The symmetrically distributed fixed pipes are all fixedly connected to the rotating shaft, the symmetrically distributed fixed pipes all pass through the spiral stirring member, sliding sleeves are slidably connected to the mutually remote ends of the symmetrically distributed fixed pipes, symmetrically distributed fixed seats are fixedly connected to the upper part of the spiral stirring member, sliding seats are slidably connected to the fixed seats, air outlet pipes one are rotatably connected to the sliding seats, air outlet pipes two are rotatably connected to the sliding sleeves, the air outlet pipe one is rotatably connected to the adjacent air outlet pipe two, the air outlet pipe two is located inside the adjacent air outlet pipe one, symmetrically distributed fixed sleeves are fixedly connected to the upper and lower sides of the air outlet pipe one, sliding rods are slidably connected to the fixed sleeves, and springs are connected between the two. The sliding rods are rotatably connected to rotating rods, and cleaning members are jointly fixedly connected to the two adjacent rotating rods up and down.

[0009] Further, symmetrically distributed spline shafts are rotatably connected to the upper part of the spiral stirring member, symmetrically distributed reciprocating lead screws are rotatably connected to the upper part of the spiral stirring member, the reciprocating lead screws are rotatably connected to the adjacent fixed seats, the symmetrically distributed spline shafts and the fixed shaft are driven by a bevel gear set, the spline shafts and the adjacent reciprocating lead screws are driven by a gear set, a second threaded sleeve is fixedly connected inside the sliding seat, the second threaded sleeve is threadedly connected to the adjacent reciprocating lead screw, a spline sleeve that is spline-connected to the adjacent spline shaft is rotatably connected to the second threaded sleeve, and the spline sleeve and the adjacent air outlet pipe one are driven by a bevel gear set.

[0010] Further, limiting blocks are slidably connected inside the upper sliding rods, limiting holes are provided on the upper rotating rods, the limiting holes are in sliding limit fit with the adjacent limiting blocks, limiting rods are slidably connected to the upper sliding rods, the limiting rods and the adjacent limiting blocks are mutually in limit fit, and springs are connected between the limiting rods and the adjacent sliding rods.

[0011] Further, an extrusion sleeve is slidably connected to the upper sliding rods, the extrusion sleeve is in sliding extrusion fit with the adjacent rotating rods, a spring is connected between the extrusion sleeve and the adjacent sliding rods, an extrusion table is fixedly connected to the sliding seat, and the limiting rods and the adjacent extrusion sleeves are both in extrusion fit with the extrusion table on the same side.

[0012] Further, the thickness of the extrusion table gradually increases from both sides to the middle.

[0013] Further, the first air outlet pipe is provided with exhaust holes that are symmetric left and right and axially arrayed up and down, and the side of the second air outlet pipe facing the spiral stirring member is provided with exhaust holes that are axially arrayed up and down. The exhaust holes on the first air outlet pipe are in communication and cooperation with the exhaust holes on the second air outlet pipe.

[0014] The present invention has the following advantages: By the cooperation of the forward rotation of the first cutting knife and the reverse rotation of the second cutting knife, the fructose products on the upper side of the air outlet table are chopped, reducing the particle size of the fructose products, making the fructose products contact water evenly, and thus accelerating the melting speed of the fructose products.

[0015] In the present invention, the gas discharged by the air pump impacts the chopped fructose products on the upper side of the air outlet table, causing the fructose products to move upward and further mix evenly with water, thereby further accelerating the melting speed of the fructose products.

[0016] In the present invention, the first cutting knife rotates and moves downward while gradually thinning the fructose products between it and the second cutting knife, thereby further making the fructose products mix evenly with water.

[0017] In the present invention, the cleaning member is used to clean the fructose products adhering to the inner wall of the processing shell, so that these fructose products adhering to the inner wall of the processing shell contact water evenly, preventing the fructose products from adhering to the inner wall of the processing shell and resulting in the inability of these fructose products to contact water evenly, thereby affecting the dissolution speed of the fructose products.

[0018] In the present invention, the high-pressure gas ejected from the ventilation holes on the first air outlet pipe is used to clean the fructose products adhering to the inner side of the cleaning member, preventing the fructose products from always contacting the cleaning member on one side and resulting in the inability of the fructose products to contact water evenly, affecting the dissolution speed of the fructose products. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0020] Figure 2 is a three-dimensional structural schematic diagram of the discharge pipe, motor and air outlet table of the present invention;

[0021] Figure 3 is a three-dimensional structural schematic diagram of the fixed seat, spline sleeve and extrusion table of the present invention;

[0022] Figure 4 is a three-dimensional structural schematic diagram of the rotating shaft, first cutting knife and second cutting knife of the present invention;

[0023] Figure 5 is a three-dimensional structural schematic diagram of the air pump, first ventilation pipe and second ventilation pipe of the present invention;

[0024] Figure 6Schematic three-dimensional structure diagram of the fixing seat, sliding seat and air outlet pipe I of the present invention;

[0025] Figure 7 Schematic three-dimensional structure diagram of the fixing sleeve, sliding rod and rotating rod of the present invention;

[0026] Figure 8 Schematic three-dimensional structure diagram of the limiting block, limiting hole and limiting rod of the present invention;

[0027] Figure 9 Schematic three-dimensional structure diagram of the sliding rod, limiting rod and extrusion sleeve of the present invention;

[0028] Figure 10 Schematic three-dimensional structure diagram of the fixed pipe, sliding sleeve and air outlet pipe I of the present invention;

[0029] Figure 11 Schematic three-dimensional structure diagram of the working state of the cleaning member of the present invention.

[0030] Meanings of the reference numerals in the figure: 1 - treatment shell, 11 - sealing door, 12 - discharge pipe, 13 - motor, 14 - air outlet platform, 15 - fixed shaft, 16 - spiral stirring member, 17 - rotating shaft, 18 - first cutting knife, 19 - second cutting knife, 21 - sealing plate, 22 - air pump, 23 - first ventilation pipe, 24 - second ventilation pipe, 31 - connecting frame, 32 - first threaded sleeve, 41 - fixed pipe, 42 - sliding sleeve, 43 - fixing seat, 44 - sliding seat, 45 - first air outlet pipe, 46 - second air outlet pipe, 47 - fixing sleeve, 48 - sliding rod, 49 - rotating rod, 410 - cleaning member, 51 - spline shaft, 52 - reciprocating lead screw, 53 - second threaded sleeve, 54 - spline sleeve, 61 - limiting block, 62 - limiting hole, 63 - limiting rod, 71 - extrusion sleeve, 72 - extrusion platform. Detailed implementation manners

[0031] Referring to an embodiment herein means that the specific features, structures or characteristics described in connection with the embodiment can be included in at least one embodiment of the present invention. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0032] The existing pretreatment method for fructose products is just to place fructose in water and then wait for the fructose to dissolve, which will waste a lot of time and affect the detection efficiency of fructose products.

[0033] Embodiment 1: A pretreatment device for food detection samples, as Figures 1 - 5As shown in the figure, it includes a processing shell 1. There is a feed inlet on the upper side of the processing shell 1. A sealing door 11 is rotatably connected at the feed inlet of the processing shell 1. The sealing door 11 is used to seal the feed inlet of the processing shell 1. A discharge pipe 12 is connected to the lower part of the processing shell 1. A motor 13 is installed at the lower part inside the processing shell 1. An air outlet platform 14 is fixedly connected to the lower part inside the processing shell 1. The discharge pipe 12 is located above the air outlet platform 14. The air outlet platform 14 is located above the motor 13. A fixed shaft 15 is fixedly connected to the upper part of the processing shell 1. A spiral stirring member 16 is rotatably and slidably connected to the fixed shaft 15. The spiral stirring member 16 is used to stir the fructose product inside the processing shell 1. A rotating shaft 17 is fixedly connected to the lower end of the spiral stirring member 16. The rotating shaft 17 is driven by a gear set between the output shaft of the motor 13. A first cutting knife 18 is fixedly connected to the rotating shaft 17. A second cutting knife 19 is rotatably connected above the air outlet platform 14. The orientations of the adjacent cutting edges on the first cutting knife 18 and the second cutting knife 19 are opposite, which is used to cut the fructose product between the two. The second cutting knife 19 is rotatably and slidably connected to the rotating shaft 17. The rotating shaft 17 and the second cutting knife 19 are driven by a planetary gear set (the planetary gear set is a conventional structure and not shown in the figure). The first cutting knife 18 is located above the second cutting knife 19.

[0034] As Figure 4 shown, a sealing plate 21 is rotatably connected inside the air outlet platform 14. There are uniformly distributed exhaust holes on the upper side of the air outlet platform 14. One-way valves (not shown in the figure) are arranged in the exhaust holes of the air outlet platform 14. The one-way valves only allow gas to spray outwards from inside the air outlet platform 14. The sealing plate 21 is provided with uniformly distributed exhaust holes. The uniformly distributed exhaust holes on the air outlet platform 14 are in communication and cooperation with the uniformly distributed exhaust holes on the sealing plate 21. The sealing plate 21 is fixedly connected to the second cutting knife 19. A gas pump 22 is installed at the lower part inside the processing shell 1. The gas pump 22 is located below the air outlet platform 14. A first ventilation pipe 23 is connected between the gas pump 22 and the air outlet platform 14. A second ventilation pipe 24 is rotatably and slidably connected between the gas pump 22 and the rotating shaft 17.

[0035] As Figure 5 shown, a connecting frame 31 is fixedly connected to the lower side of the rotating shaft 17. A first threaded sleeve 32 located below the air outlet platform 14 is fixedly connected to the second ventilation pipe 24. The first threaded sleeve 32 is threadedly connected to the connecting frame 31. The thread on the first threaded sleeve 32 is a reciprocating thread.

[0036] When it is necessary to dilute the fructose product in water, the staff opens the sealing door 11 and adds the fructose product and water into it through the feed inlet on the processing shell 1. The fructose product and water entering the processing shell 1 fall on the upper side of the air outlet platform 14. When the added amount reaches the set value, the staff closes the sealing door 11 and starts the motor 13. The output shaft of the motor 13 drives the rotating shaft 17 to rotate through the gear set. The rotating shaft 17 drives the spiral stirring member 16 to rotate. The spiral stirring member 16 rotates to stir the fructose product inside it, accelerating the dissolution rate of the fructose product.

[0037] During the rotation of the rotating shaft 17, the rotating shaft 17 drives the first cutting knife 18 to rotate. The first cutting knife 18 drives the second cutting knife 19 to rotate in the reverse direction through the planetary gear set. Through the cooperation of the forward rotation of the first cutting knife 18 and the reverse rotation of the second cutting knife 19, the fructose products on the upper side of the air outlet platform 14 are shredded, the particle size of the fructose products is reduced, and the fructose products are evenly contacted with water, thereby accelerating the melting speed of the fructose products.

[0038] When the staff starts the motor 13, the staff starts the air pump 22. The air pump 22 injects high-pressure gas into the air outlet platform 14 through the first ventilation pipe 23. During the rotation of the second cutting knife 19, the second cutting knife 19 drives the sealing plate 21 to rotate. During the rotation of the sealing plate 21, when the exhaust holes evenly distributed on the air outlet platform 14 are communicated with the exhaust holes evenly distributed on the sealing plate 21, the gas in the air outlet platform 14 is discharged through the exhaust holes evenly distributed thereon, and impacts the shredded fructose products on the upper side of the air outlet platform 14, so that the fructose products move upward to be further evenly mixed with water, thereby further accelerating the melting speed of the fructose products.

[0039] During the rotation of the rotating shaft 17, the rotating shaft 17 drives the connecting frame 31 to rotate. During the rotation of the connecting frame 31, it cooperates with the first threaded sleeve 32, so that the connecting frame 31 drives the rotating shaft 17 to move downward. The rotating shaft 17 drives the first cutting knife 18 and other parts to move downward synchronously. During the downward movement of the first cutting knife 18, the first cutting knife 18 rotates to gradually cut thin the fructose products between it and the second cutting knife 19, thereby further evenly mixing the fructose products with water. When the first cutting knife 18 moves downward until its lower side contacts the second cutting knife 19, the first cutting knife 18 starts to move upward.

[0040] After the dissolution is completed, the staff opens the solenoid valve in the discharge pipe 12 to drain the dissolved fructose solution in the treatment shell 1.

[0041] Example 2: On the basis of Example 1, as Figures 6 - 11As shown in the figure, it further includes two fixed pipes 41 symmetrically distributed on the left and right. The two fixed pipes 41 symmetrically distributed on the left and right are both fixedly connected to the upper part of the rotating shaft 17. The two fixed pipes 41 symmetrically distributed on the left and right both pass through the spiral stirring member 16. One end of each of the two fixed pipes 41 away from each other is slidably connected with a sliding sleeve 42. The upper part of the spiral stirring member 16 is fixedly connected with two fixed seats 43 symmetrically distributed on the left and right. One side of each of the two fixed seats 43 away from each other is slidably connected with a sliding seat 44. The lower part of the sliding seat 44 is rotatably connected with an air outlet pipe 45. The upper part of the sliding sleeve 42 is rotatably connected with an air outlet pipe 46. The air outlet pipe 45 is rotatably connected with the adjacent air outlet pipe 46, and the air outlet pipe 46 is located inside the adjacent air outlet pipe 45. Both the upper and lower sides of the air outlet pipe 45 are fixedly connected with two fixed sleeves 47 symmetrically distributed on the left and right. The fixed sleeve 47 is slidably connected with a sliding rod 48, and a spring is connected between the two. The fixed sleeve 47 stores hydraulic oil. An oil delivery channel is arranged in the sliding rod 48. The sliding rod 48 is rotatably connected with a rotating rod 49. Two adjacent rotating rods 49 up and down are jointly fixedly connected with a cleaning member 410. The cleaning member 410 is provided with uniformly distributed through holes, and the cleaning member 410 is arranged as an arc-shaped plate.

[0042] As Figure 5 shown in the figure, two spline shafts 51 symmetrically distributed on the left and right are rotatably connected to the upper part of the spiral stirring member 16. Two reciprocating lead screws 52 symmetrically distributed on the left and right are rotatably connected to the upper part of the spiral stirring member 16. The reciprocating lead screw 52 is rotatably connected with the adjacent fixed seat 43. The spline shaft 51 and the fixed shaft 15 are driven by a bevel gear set. The spline shaft 51 and the adjacent reciprocating lead screw 52 are driven by a gear set. A thread sleeve two 53 threadedly connected with the adjacent reciprocating lead screw 52 is fixedly connected inside the sliding seat 44. The thread sleeve two 53 is rotatably connected with a spline sleeve 54 spline-connected with the adjacent spline shaft 51. The spline sleeve 54 and the adjacent air outlet pipe 45 are driven by a bevel gear set.

[0043] As Figures 6 - 8 shown in the figure, a limiting block 61 is slidably connected inside each of the upper sliding rods 48. The limiting block 61 is located in the oil delivery channel of the adjacent sliding rod 48. Each of the upper rotating rods 49 is provided with a limiting hole 62. When the limiting block 61 enters the adjacent limiting hole 62, the limiting hole 62 is limited by the adjacent limiting block 61, so as to limit the adjacent rotating rod 49. A limiting rod 63 is slidably connected to the upper sliding rod 48. The limiting rod 63 and the adjacent limiting block 61 are mutually limited and matched. A spring is connected between the limiting rod 63 and the adjacent sliding rod 48. This spring is initially in a compressed state.

[0044] As Figures 6 - 8As shown, a sliding rod 48 on the upper side is slidably connected with an extrusion sleeve 71. A convex post is arranged inside the extrusion sleeve 71. A chute is arranged on the rotating rod 49, and the chute is composed of a vertical chute and an inclined chute. At the same time, the vertical chute is located above the inclined chute. The convex post on the extrusion sleeve 71 slides in the chute on the adjacent rotating rod 49. A spring is connected between the extrusion sleeve 71 and the adjacent sliding rod 48. The sliding seat 44 is fixedly connected with an extrusion table 72. The thickness of the extrusion table 72 gradually increases from both sides to the middle, that is, the extrusion table 72 is provided with two gradually changing inclined surfaces, and both of the two gradually changing inclined surfaces are located on the lower side of the extrusion table 72. The extrusion table 72 extrudes the same-side limiting rod 63 and extrusion sleeve 71 through the inclined surface on its lower side. Air delivery channels are arranged inside the fixed pipe 41, the sliding sleeve 42, the first air outlet pipe 45, the second air outlet pipe 46 and the rotating shaft 17, and the above five are all interconnected. The rotating shaft 17 and the air pump 22 are both communicated with the second ventilation pipe 24. The first air outlet pipe 45 is provided with exhaust holes that are symmetric left and right and axially arranged up and down. Check valves (not shown in the figure) are arranged in the exhaust holes of the first air outlet pipe 45. The check valves only allow gas to spray outwards from the first air outlet pipe 45. The side of the second air outlet pipe 46 facing the spiral stirring member 16 is provided with exhaust holes that are axially arranged up and down. The exhaust holes on the first air outlet pipe 45 are in communication and cooperation with the exhaust holes on the second air outlet pipe 46.

[0045] During the rotation of the spiral stirring member 16, the spiral stirring member 16 drives the two fixed seats 43 and the parts thereon to rotate. At this time, since the fixed shaft 15 does not rotate, under the action of the bevel gears between the two spline shafts 51 and the fixed shaft 15, the two spline shafts 51 rotate. The spline shaft 51 drives the adjacent reciprocating lead screw 52 to rotate through the gear set. During the rotation of the reciprocating lead screw 52, the reciprocating lead screw 52 cooperates with the adjacent second thread sleeve 53, so that the second thread sleeve 53 drives the adjacent sliding seat 44 and the adjacent spline sleeve 54 to move reciprocally.

[0046] During the rotation of the spline shaft 51, the spline shaft 51 drives the adjacent spline sleeve 54 to rotate. The spline sleeve 54 drives the adjacent first air outlet pipe 45 to rotate through the bevel gear set. The first air outlet pipe 45 drives the two cleaning parts 410 to rotate through the four groups of fixed sleeves 47, sliding rods 48 and rotating rods 49 thereon.

[0047] During the reciprocating movement of the sliding seat 44, the sliding seat 44 drives the two adjacent cleaning parts 410 to move reciprocally through the adjacent first air outlet pipe 45. At this time, there are the following two situations:

[0048] Case 1: During the process of the sliding seat 44 moving towards the inner wall of the processing shell 1, when a cleaning member 410 rotates to a vertical side thereof contacting the inner side of the processing shell 1, the sliding seat 44 is still moving towards the inner wall of the processing shell 1. Therefore, under the extrusion of the inner side of the processing shell 1, the cleaning member 410, the adjacent rotating rod 49 and the adjacent sliding rod 48 no longer move, while the fixed sleeve 47, driven by the first air outlet pipe 45, is still moving towards the inner side of the processing shell 1, that is, a relative displacement occurs between the sliding rod 48 and the adjacent fixed sleeve 47, and the spring between the two is compressed. Moreover, the hydraulic oil in the fixed sleeve 47 squeezes the adjacent limiting block 61 through the oil delivery channel in the sliding rod 48, causing the limiting block 61 to move into the adjacent limiting hole 62 to limit the rotating rod 49 and prevent the rotating rod 49 from rotating.

[0049] After the limiting block 61 moves into the adjacent limiting hole 62, the limiting block 61 no longer limits the adjacent limiting rod 63. Subsequently, under the action of the adjacent spring, the limiting rod 63 moves upward and limits the adjacent limiting block 61 to prevent the limiting block 61 from detaching from the limiting hole 62.

[0050] After the above two limitings are completed, the cleaning member 410 itself can no longer rotate. At this time, in cooperation with the rotating spiral stirring member 16, the cleaning member 410 separates the fructose products adhering to the inner wall of the processing shell 1 in the form of "scooping" with its vertical side and inner side.

[0051] During the process when the cleaning member 410 itself cannot rotate, the first air outlet pipe 45 drives the cleaning member 410 to rotate. However, since the sliding seat 44 moves towards the inner wall of the processing shell 1, the end of the cleaning member 410 always contacts the inner wall of the processing shell 1. However, the vertical side contacting the inner wall of the processing shell 1 will still move towards the first air outlet pipe 45. In this way, in cooperation with the rotating spiral stirring member 16, the cleaning member 410 separates the fructose products adhering to the inner wall of the processing shell 1 in the way of "an excavator bucket shoveling soil".

[0052] During the above process, the fructose products adhering to the inner wall of the processing shell 1 are cleaned by the cleaning member 410 (these fructose products are in a semi-melted state. When they dissolve in water, when these semi-melted fructose products contact the inner wall of the processing shell 1, these semi-melted fructose products will adhere to the inner wall of the processing shell 1). Thus, these fructose products adhering to the inner wall of the processing shell 1 are in uniform contact with water, preventing the fructose products from adhering to the inner wall of the processing shell 1, resulting in the inability of these fructose products to be in uniform contact with water and thus affecting the dissolution rate of the fructose products.

[0053] Case 2: During the process of the sliding seat 44 moving towards the center of the processing shell 1, as the sliding seat 44 moves towards the center of the processing shell 1, the extrusion force between the cleaning member 410 and the inner wall of the processing shell 1 gradually decreases. However, at this time, since the limiting rod 63 still limits the adjacent limiting block 61, the spring between the sliding rod 48 and the adjacent fixed sleeve 47 cannot be reset. Therefore, during the process of the sliding seat 44 moving towards the center of the processing shell 1, the cleaning member 410 moves along with the sliding seat 44 and no longer contacts the inner wall of the processing shell 1. In this way, the fructose products scraped by it are completely separated from the inner wall of the processing shell 1.

[0054] Until the extrusion sleeve 71 on the cleaning member 410 contacts the lower side of the adjacent extrusion table 72, the limiting rod 63 also contacts the lower side of the extrusion table 72. At this time, under the extrusion of the lower side of the extrusion table 72, the limiting rod 63 moves downward to compress the adjacent spring and releases the limit on the adjacent limiting block 61. Subsequently, under the action of the spring between the fixed sleeve 47 and the sliding rod 48, the sliding rod 48 moves and resets towards the side away from the fixed sleeve 47. The volume of the inner cavity of the fixed sleeve 47 increases and generates negative pressure to adsorb the limiting block 61, so that the limiting block 61 moves out of the limiting hole 62 and resets. After the limiting block 61 moves out of the limiting hole 62, the limit on the adjacent rotating rod 49 is released. After the limiting block 61 resets, the limiting block 61 re-limits the adjacent limiting rod 63.

[0055] During the process of the limiting rod 63 moving downward, the extrusion sleeve 71 moves downward synchronously. At this time, the convex column on the extrusion sleeve 71 moves along the straight groove on the adjacent rotating rod 49. Until the limiting block 61 moves out of the limiting hole 62, the convex column on the extrusion sleeve 71 moves downward along the inclined groove on the adjacent rotating rod 49. The extrusion sleeve 71 presses the inclined groove on the adjacent rotating rod 49 through the convex column on it, so that the rotating rod 49 rotates 180 degrees. Until the extrusion sleeve 71 moves to the midline of the lower side of the extrusion table 72, the extrusion sleeve 71 no longer moves downward. At this time, the rotating rod 49 rotates 180 degrees, so that the protruding side of the cleaning member 410 faces the first air outlet pipe 45. And at this time, the first air outlet pipe 45 rotates to make the ventilation holes on it communicate with the ventilation holes on the adjacent second air outlet pipe 46. The ventilation holes on the first air outlet pipe 45 start to spray high-pressure gas outward to clean the fructose products adhered to the inner side of the cleaning member 410, preventing the fructose products from being unable to contact water evenly due to one side of the fructose products always contacting the cleaning member 410, which affects the dissolution rate of the fructose products. And since the moving direction of the high-pressure gas is from the outside to the inside of the cleaning member 410, the above cleaning method is backwashing.

[0056] When the extrusion sleeve 71 contacts the inclined surface on the rear side of the adjacent extrusion table 72, under the action of the spring between the extrusion sleeve 71 and the slide bar 48, the extrusion sleeve 71 moves upward to reset. The convex post on the extrusion sleeve 71 slides along the chute on the adjacent rotating rod 49, causing the rotating rod 49 to drive the adjacent cleaning member 410 to rotate. Until the extrusion sleeve 71 does not contact the adjacent extrusion table 72, the cleaning member 410 rotates to its concave side facing the first air outlet pipe 45. At the same time, during this process, under the limiting action of the limiting block 61, the limiting rod 63 does not move upward.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than limit the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A pretreatment device for food detection samples, comprising a processing shell, an inlet is arranged on the upper side of the processing shell, a sealing door is rotatably connected at the inlet of the processing shell, a discharge pipe is communicated with the lower part of the processing shell, a motor is installed at the lower part inside the processing shell, an air outlet platform is fixedly connected at the lower part inside the processing shell, the air outlet platform is located above the motor, a fixed shaft is fixedly connected to the upper part of the processing shell, a spiral stirring member is rotatably and slidably connected to the fixed shaft, the spiral stirring member is fixedly connected with a rotating shaft, and the rotating shaft is driven by a gear set with the output shaft of the motor. The characteristics are as follows: It further includes a first cutting knife, which is fixedly connected to the rotating shaft. A second cutting knife is rotatably connected to the upper side of the air outlet platform. The second cutting knife is rotatably and slidably connected to the rotating shaft. The rotating shaft and the second cutting knife are driven by a planetary gear set. The first cutting knife is located above the second cutting knife. It also includes symmetrically distributed fixed pipes, which are all fixedly connected to the rotating shaft. The symmetrically distributed fixed pipes all pass through the spiral stirring member. Sliding sleeves are slidably connected to the opposite ends of the symmetrically distributed fixed pipes. Symmetrically distributed fixed seats are fixedly connected to the upper part of the spiral stirring member. The fixed seats are slidably connected to sliding seats. The sliding seats are rotatably connected to a first air outlet pipe. The sliding sleeves are rotatably connected to a second air outlet pipe. The first air outlet pipe is rotatably connected to the adjacent second air outlet pipe. The second air outlet pipe is located inside the adjacent first air outlet pipe. Symmetrically distributed fixed sleeves are fixedly connected to the upper and lower sides of the first air outlet pipe. The fixed sleeves are slidably connected to sliding rods, and a spring is connected between the two. The sliding rods are rotatably connected to rotating rods. Two adjacent rotating rods above and below are jointly fixedly connected to a cleaning member. Symmetrically distributed spline shafts are rotatably connected to the upper part of the spiral stirring member. Symmetrically distributed reciprocating lead screws are rotatably connected to the upper part of the spiral stirring member. The reciprocating lead screws are rotatably connected to the adjacent fixed seats. The symmetrically distributed spline shafts and the fixed shaft are driven by a bevel gear set. The spline shafts and the adjacent reciprocating lead screws are driven by a gear set. A second threaded sleeve is fixedly connected inside the sliding seat. The second threaded sleeve is threadedly connected to the adjacent reciprocating lead screw. The second threaded sleeve is rotatably connected to a spline sleeve that is spline-connected to the adjacent spline shaft. The spline sleeve and the adjacent first air outlet pipe are driven by a bevel gear set. The upper sliding rod is slidably connected to an extrusion sleeve. A convex column is arranged inside the extrusion sleeve. A chute is arranged on the rotating rod, and the chute is composed of a vertical chute and an inclined chute. The vertical chute is located above the inclined chute. The convex column on the extrusion sleeve slides in the chute on the adjacent rotating rod. A spring is connected between the extrusion sleeve and the adjacent sliding rod. The sliding seat is fixedly connected to an extrusion platform, and the thickness of the extrusion platform gradually increases from both sides to the middle.

2. The pretreatment device for food detection samples according to claim 1, characterized in that: The orientations of the adjacent cutting edges on the first cutting knife and the second cutting knife are opposite.

3. The pretreatment device for food detection samples according to claim 1 is characterized in that: A sealing plate is rotatably connected inside the air outlet platform. The sealing plate is fixedly connected to the second cutting knife. A gas pump is installed at the lower part inside the processing shell and is located below the air outlet platform. A first ventilation pipe is communicated between the gas pump and the air outlet platform. A second ventilation pipe is rotatably and slidably connected between the gas pump and the rotating shaft.

4. A pretreatment device for food detection samples according to claim 3, characterized in that: A connecting frame is fixedly connected to the lower side of the rotating shaft. The second ventilation pipe is fixedly connected to a first threaded sleeve located below the air outlet platform. The connecting frame is threadedly connected to the first threaded sleeve, and the thread on the first threaded sleeve is a reciprocating thread.

5. The pretreatment device for food detection samples according to claim 1 is characterized in that: A limiting block is slidably connected inside each of the upper slide rods. A limiting hole is provided on each of the upper rotating rods. The limiting hole is in sliding and limiting cooperation with the adjacent limiting block. A limiting rod is slidably connected to the upper slide rod. The limiting rod is in limiting cooperation with the adjacent limiting block. A spring is connected between the limiting rod and the adjacent slide rod.

6. A pretreatment device for food detection samples according to claim 1, characterized in that: The first air outlet pipe is provided with exhaust holes that are symmetric left and right and axially arrayed up and down. The side of the second air outlet pipe facing the spiral stirring member is provided with exhaust holes that are axially arrayed up and down. The exhaust holes on the first air outlet pipe are in communication and cooperation with the exhaust holes on the second air outlet pipe.

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