Fruit screening machine

Abstract

The invention relates to the technical field of preserved fruit processing, and discloses a fruit screening machine which comprises a rack. The screening pipeline is installed on the machine frame and extends downwards in a spiral mode along the machine frame, a feeding port is formed in the upper end of the screening pipeline, a plurality of discharging grooves are formed in the pipe wall of the screening pipeline, groove openings of the discharging grooves are distributed in the spiral direction of the screening pipeline, and the discharging grooves are sequentially enlarged; the material receiving part is mounted on the screening pipeline and is used for communicating with the discharging groove; and the blocking piece is used for blocking the discharging groove. The whole screening pipeline can be washed, water resources can be saved, thorough washing can be achieved, and fruit juice and pulp remaining in the screening pipeline are reduced.

Description

Technical Field

[0001] This application relates to the technical field of preserved fruit processing, and particularly relates to a fruit screening machine. Background Art

[0002] When fruits are processed into candied fruits, it is necessary to slice the fruits. The sliced fruits cut from fruits with similar shapes and sizes also have very similar shapes, sizes, and thicknesses, which makes the processing of the sliced fruits more uniform and has good consistency. Therefore, the fruit size sorting process is essential in the fruit processing process.

[0003] As described in the utility model with the application number CN202321505366.5 of the existing fruit size screening machine, a grading net is arranged inside the fixed frame, a loading hopper is arranged on one side of the fixed frame, a channel is arranged at the bottom of the fixed frame, and a cleaning mechanism is arranged on the inner wall of the fixed frame. The cleaning mechanism plays a role in cleaning the surface of the grading net.

[0004] Regarding the above related technologies, it is found that although the pulp is not easy to remain, the fruit juice still remains on the grading net. When the grading net is washed with water, the grading net has good water permeability, and a large amount of water needs to be flushed onto the grading net each time, which is a waste of water resources. Summary of the Invention

[0005] In order to improve the above problems, this application provides a fruit screening machine.

[0006] This application provides a fruit screening machine, adopting the following technical solutions: A fruit screening machine, comprising: A frame; A screening pipeline, installed on the frame and extending spirally downward along the frame. An inlet is arranged at the upper end of the screening pipeline, and a plurality of discharge slots are formed in the pipe wall of the screening pipeline. The discharge slot openings are distributed along the spiral direction of the screening pipeline, and the plurality of discharge slots increase in sequence; A material receiving part, installed on the screening pipeline and used for communicating with the discharge slot; A plugging member, used for plugging the discharge slot.

[0007] By adopting the above technical solution, fruits enter the screening pipeline extending spirally downward from the feeding port, roll and slide downward along the pipeline under the action of their own gravity. Due to the differences in rolling speed and trajectory of fruits of different sizes, when rolling to the discharge slots at different positions, since the orifice of the discharge slot increases sequentially along the spiral direction, fruits can roll out from the discharge slots of different sizes according to their sizes, realizing the preliminary screening of fruits; the receiving part is communicated with the discharge slot, facilitating the reception of fruits rolling out from the discharge slot and preparing for subsequent processing such as collection and packaging of fruits; the blocking member can block the discharge slot. By controlling the opening and closing of the blocking member, the timing of fruits rolling out from the discharge slot can be flexibly controlled to meet different screening requirements. When cleaning the screening machine, all the discharge slots are blocked by the blocking member, and then water is introduced into the screening pipeline. The water flow enters the screening pipeline extending spirally downward from the feeding port and flows downward along the pipeline under the action of its own gravity, flushing the inner wall of the screening pipeline. And at each turning of the screening pipeline, a certain acceleration can be maintained, making the water flow have more impact force to impact the inner wall of the screening pipeline. A small amount of water can flush the entire screening pipeline, which can not only save water resources but also flush cleanly, reducing the residue of fruit juice and pulp in the screening pipeline.

[0008] Optionally, the receiving part includes a receiving pipe and a transfer box. The receiving pipe is installed between the screening pipeline and the transfer box. Two adjusting rods are installed in the receiving pipe, and a spacing for fruits to pass through is left between the two adjusting rods. The adjusting rods are located in the discharge slot.

[0009] By adopting the above technical solution, the receiving pipe connects the screening pipeline and the transfer box, ensuring that the fruits rolling out from the discharge slot can smoothly enter the transfer box, realizing the accurate receiving of fruits and avoiding fruit scattering. When fruits pass through the two adjusting rods, if they do not enter between the adjusting rods at the beginning, they can enter any position between the two adjusting rods along the rolling path. The lengths of the two adjusting rods can extend the passing stroke of fruits of the same specification, improving the screening effect and reducing the situation where fruits do not enter the corresponding discharge slot. A spacing for fruits to pass through is left between the two adjusting rods and is located in the discharge slot. By adjusting the spacing between the two adjusting rods, fruits of different sizes can be controlled to pass through, further improving the screening accuracy of fruits and meeting the screening requirements of fruits of different specifications.

[0010] Optionally, the blocking member includes a blocking plate and a push rod. One end of the push rod is rotatably connected to the blocking plate, and the other end of the push rod extends outside the transfer box. The push rod is threadedly installed on the transfer box.

[0011] By adopting the above technical solution, the push rod is rotatably connected to the blocking plate. By rotating the push rod extending outside the transfer box, since the push rod is threadedly installed on the transfer box, the rotation of the push rod will drive the blocking plate to move, thereby realizing the blocking or opening of the discharge chute. The operation is convenient, and the outflow of fruits can be effectively controlled. The push rod is threadedly installed on the transfer box, and this connection method makes the connection between the blocking member and the transfer box firm, and the structure is stable during the blocking or opening process, and it is not easy to loosen or malfunction.

[0012] Optionally, both of the adjusting rods are connected with a rotating rod, the push rod passes through the blocking plate and is rotatably connected with the rotating rod, the two adjusting rods approach or move away along with the rotation of the rotating rod, the two adjusting rods respectively slide on the two side walls of the discharge chute, the two side walls of the discharge chute extend along the radial direction of the same center of a circle, when the push rod slides upward, the two adjusting rods approach each other along the guidance of the side walls of the discharge chute.

[0013] By adopting the above technical solution, the push rod is rotatably connected to the rotating rod. When the push rod rotates, it will drive the rotating rod to move upward or downward. The two adjusting rods respectively slide on the two side walls of the discharge chute, and the two side walls of the discharge chute extend along the radial direction of the same center of a circle. This structure enables the adjusting rods to move along with the change of the height position of the rotating rod, and the adjusting rods slide along the side walls of the discharge chute, so that the two adjusting rods slide close to each other when the rotating rod moves upward, and slide away from each other when the rotating rod moves downward. During the sliding process, they are guided by the side walls of the discharge chute, which ensures the accuracy and stability of the movement of the adjusting rods, ensures the accuracy of the adjustment of the distance between the adjusting rods, and further ensures the accuracy of fruit screening.

[0014] Optionally, one discharge pipe is communicated with each of the opposite sides of the transfer box.

[0015] By adopting the above technical solution, one discharge pipe is communicated with each of the opposite sides of the transfer box, so that the fruits received from the transfer box can flow out from two directions, which is convenient to select a suitable discharge direction according to the actual site layout and the position of the subsequent processing equipment, and improves the adaptability of the equipment and the flexibility of use.

[0016] Optionally, two inclined downward diversion surfaces are provided on the blocking plate, and the lower ends of the diversion surfaces are close to the discharge pipes.

[0017] By adopting the above technical solution, the diversion surfaces on the blocking plate can smoothly guide the fruits that roll out from the discharge chute and fall on the blocking plate along the diversion surfaces to the discharge pipes, avoiding the accumulation of fruits on the blocking plate, ensuring that the fruits can flow out quickly and smoothly, and improving the discharge efficiency of the fruits.

[0018] Optionally, the two discharge pipes of one transfer box are both vertically arranged, and the screening pipeline is located between the two discharge pipes.

[0019] By adopting the above technical solution, the discharge pipe is vertically arranged, and the screening pipe is located between the two discharge pipes. This layout makes the structure of the whole equipment more compact, makes full use of the space, reduces the floor area of the equipment, and at the same time facilitates the flow of fruits during the screening, material receiving and discharging processes, improving the overall operation efficiency of the equipment.

[0020] Optionally, a water pipe is installed in the screening pipe.

[0021] By adopting the above technical solution, the water pipe can spray water into the screening pipe to wash the fruits rolling in the screening pipe, removing dust, impurities, etc. on the surface of the fruits and improving the cleanliness of the fruits. At the same time, the water can also play a certain role in preservation, maintaining the freshness of the fruits and reducing the loss of fruits during the screening process.

[0022] In summary, the present application includes at least one of the following beneficial effects: 1. When the fruit screening machine is being cleaned, all the discharge slots are blocked by the blocking members, and water is introduced into the screening pipe. The water flow flows downward along the spiral pipe under the action of its own gravity, flushing the inner wall of the screening pipe, and can maintain a certain acceleration at each turning point, making the water flow more impactful. A small amount of water can flush the entire screening pipe, which can not only save water resources but also flush it clean, reducing the residue of fruit juice and pulp in the screening pipe; 2. By adjusting the distance between the two adjusting rods, fruits of different sizes can be controlled to pass through, further improving the accuracy of fruit screening and meeting the screening requirements of fruits of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is the overall structural schematic diagram of the embodiment of the present application; Figure 2 is the overall structural schematic diagram of the embodiment of the present application showing the screening pipe; Figure 3 is the cross-sectional schematic diagram of the embodiment of the present application showing the water pipe located in the screening pipe; Figure 4 is Figure 3 the enlarged schematic diagram at A of Figure 5 is the structural schematic diagram of the embodiment of the present application showing the adjusting rod located in the discharge slot; Figure 6 is the structural schematic diagram of the embodiment of the present application showing the blocking plate blocking the discharge slot; Figure 7 is the overall structural schematic diagram of the embodiment of the present application showing the connection between the adjusting rod and the push rod.

[0024] Description of reference numerals: 10, frame; 20, screening pipeline; 21, discharge chute; 30, material receiving part; 31, material receiving pipe; 32, transfer box; 33, discharge pipe; 34, material receiving frame; 35, communication groove; 40, plugging member; 41, plugging plate; 42, push rod; 43, transition rod; 50, feed hopper; 60, water pipe; 70, adjusting rod; 71, rotating rod. Detailed implementation manners

[0025] The following further elaborates on this application in conjunction with the Figure 1 - appended Figure 7 drawings for a more detailed description.

[0026] An embodiment of this application discloses a fruit screening machine. The fruit screening machine as a whole mainly consists of core components such as a frame 10, a screening pipeline 20, a material receiving part 30, and a plugging member 40.

[0027] The frame 10 serves as the basic support structure of the entire screening machine, providing a stable installation position for other components.

[0028] The screening pipeline 20 is fixed to the frame 10 through a specific installation method. Any cross-section of the screening pipeline 20 is a circular pipe cross-section, and the inner diameters are all equal. The unique spiral downward extension design of the screening pipeline 20 not only enables fruits to smoothly roll and slide down along the pipeline under the action of their own gravity, but also this spiral structure extends the rolling path of the fruits to a certain extent, increasing the residence time of the fruits during the screening process, which is conducive to more fully screening according to the size of the fruits. Furthermore, the screening pipeline 20 is preferably a variable-diameter spiral path.

[0029] Referring to Figure 1 , an inlet is provided at the upper end of the screening pipeline 20, providing an inlet channel for fruits to enter the screening pipeline 20. The inlet is connected to a feed hopper 50, and the feed hopper is fixedly connected to the frame 10. Only one or two fruits can enter the lower end of the feed hopper 50.

[0030] Referring to Figure 2 , a plurality of discharge chutes 21 are provided on the screening pipeline 20, and the discharge chutes 21 are arranged at intervals along the spiral direction of the screening pipeline 20. The mouths of the discharge chutes 21 increase in sequence along the spiral direction of the screening pipeline 20. This ingenious design is the key for this screening machine to achieve fruit grading by size. During the rolling process of fruits of different sizes, due to differences in rolling speed and trajectory, they will roll to the discharge chutes 21 at different positions. When a fruit rolls to a discharge chute 21 that matches its own size, it can roll out from this discharge chute 21, thus realizing the preliminary screening of fruits.

[0031] In addition, referring to Figure 3, a water pipe 60 is installed on the inner wall of the screening pipe 20, and the water pipe 60 is also spirally distributed along the screening pipe 20. Through holes are provided on the outer wall of the water pipe 60, and the through holes are arranged at intervals along the length direction of the water pipe 60. When one end of the water pipe 60 is connected to a water tank (not shown in the figure), a water pump is also connected. The water pump increases the water pressure in the water pipe 60, enabling the water pipe 60 to spray water into the screening pipe 20. During the fruit screening process, water can clean the fruits rolling in the screening pipe 20, effectively removing dust, impurities, etc. on the fruit surface and improving the cleanliness of the fruits. At the same time, water also plays a certain role in preservation, capable of maintaining the freshness of the fruits and reducing the loss of fruits during the screening process. Moreover, when cleaning the screening machine, all the discharge chutes 21 are blocked by the blocking members 40, and then water is introduced into the screening pipe 20. The water flow enters the spirally downward-extending screening pipe 20 from the feed port and flows downward along the pipe under its own gravity, flushing the inner wall of the screening pipe 20. And at each turning point of the screening pipe 20, a certain acceleration can be maintained, making the water flow have a greater impact force on the inner wall of the screening pipe 20. A small amount of water can flush the entire screening pipe 20, which can not only save water resources but also flush cleanly, reducing the residue of fruit juice and pulp in the screening pipe 20.

[0032] Refer to Figure 4 , the material receiving part 30 is installed on the screening pipe 20, and its main function is to communicate with the discharge chute 21 to facilitate receiving the fruits rolling out from the discharge chute 21. Specifically, the material receiving part 30 includes a material receiving pipe 31 and a transfer box 32. The material receiving pipe 31 serves as a bridge connecting the screening pipe 20 and the transfer box 32. The material receiving pipe 31 is sleeved on the screening pipe 20 in a split manner, and the material receiving pipe 31 extends along the spiral direction of the screening pipe 20. The material receiving pipe 31 is provided with a communication groove 35 for communicating with the discharge chute 21. The material receiving pipe 31 ensures that the fruits rolling out from the discharge chute 21 can smoothly and accurately enter the transfer box 32, avoiding the scattering of fruits during the transmission process.

[0033] Refer to Figure 4 and Figure 5, two adjusting rods 70 are installed in the material receiving pipe 31. A spacing for fruits to pass through is left between the two adjusting rods 70. The adjusting rods 70 are located in the discharge chute 21 or the connecting chute 35. The two adjusting rods 70 have a certain length but are not spirally distributed along the spiral distribution of the screening pipe 20. The two adjusting rods 70 maintain a straight segment, and the two adjusting rods 70 are parallel to each other and maintain the same spacing. However, the heights of the two ends of the adjusting rod 70 are different, and it is appropriately inclined downward along the spiral screening pipe 20. When the fruits pass through the two adjusting rods 70, if they do not enter between the two adjusting rods 70 at the beginning, they can enter any position between the two adjusting rods 70 along the rolling path. The length of the two adjusting rods 70 can extend the travel of the fruits of the same specification, improve the screening effect, and reduce the situation where the fruits do not enter the corresponding discharge chute 21. By adjusting the spacing between the two adjusting rods 70, the passage of fruits of different sizes can be effectively controlled, further improving the accuracy of fruit screening and meeting the screening requirements of fruits of different specifications.

[0034] Refer to Figure 6 and Figure 7 , the blocking member 40 is used to block the discharge chute 21, and its structure includes a blocking plate 41 and a push rod 42. One end of the push rod 42 is rotatably connected to the blocking plate 41 through a bearing, and the other end extends outside the transfer box 32. And the push rod 42 is threadedly installed on the transfer box 32. When the push rod 42 moves upward, the blocking plate 41 slides and fits against the inner walls around the transfer box 32, and water cannot leave from the discharge chute 21. However, some impurities in the screening pipe 20 will fall into the transfer box 32, and the transfer box 32 can also play a role in collecting sundries.

[0035] In actual operation, by rotating the push rod 42 extending outside the transfer box 32, due to the threaded connection relationship between the push rod 42 and the transfer box 32, the rotation of the push rod 42 will drive the blocking plate 41 to move, so as to realize the blocking or opening of the discharge chute 21. This operation method is simple and convenient, can effectively control the outflow timing of fruits, and meets different screening requirements. At the same time, the push rod 42 is threadedly installed on the transfer box 32, making the connection between the blocking member 40 and the transfer box 32 firm and reliable, and the structure is stable during the blocking or opening process and is not prone to looseness or failure.

[0036] Further, both of the two adjusting rods 70 are connected with rotating rods 71. One rotating rod 71 is connected to each of the two ends in the length direction of one adjusting rod 70. At the two ends of the rotating rod 71 close to the length direction of the discharge chute 21, the push rod 42 passes through the blocking plate 41 and is rotatably connected with a transition rod 43. The transition rod 43 is located below the adjusting rod 70. The rotating rod 71 is rotatably installed on the transition rod 43 through a collar, and the rotating rod 71 is rotatably installed on a fixed rod. The rotation center line of the rotating rod 71 is the same as the central axis of the transition rod 43. A spacing for fruits to pass through is left between the adjusting rod 70 and the transition rod 43. By arranging the transition rod 43 and the two rotating rods 71 to support one adjusting rod 70, the stability of the adjusting rod 70 is increased. The two side walls of the discharge chute 21 extend along the radial direction of the same center of a circle, and the two adjusting rods 70 respectively slide on the two side walls of the discharge chute 21. The cross section of the adjusting rod 70 is a circular structure, and the adjusting rod 70 is tangent to the side wall of the discharge chute 21.

[0037] When the push rod 42 rotates, the push rod 42 drives the rotating rod 71 to move upward or downward through the transition rod 43. The side walls of the discharge chute 21 and the communication chute 35 both extend along the radial direction of the screening pipeline. The adjusting rod 70 forms a sliding connection relationship with the side wall of the discharge chute 21, so that the adjusting rod 70 can slide along the side wall of the discharge chute 21 under the drive of the rotating rod 71. Specifically, when the push rod 42 slides upward, the two adjusting rods 70 approach each other along the guidance of the side walls; when the push rod 42 slides downward, the two adjusting rods 70 move away from each other. During the sliding process, the side wall of the discharge chute 21 plays a guiding role for the adjusting rod 70, ensuring the accuracy and stability of the movement of the adjusting rod 70, ensuring the accuracy of the adjustment of the distance between the adjusting rods 70, and further ensuring the accuracy of fruit screening. When the blocking plate 41 blocks the transfer box 32, the adjusting rod 70 is located inside the screening pipeline 20.

[0038] Refer to Figure 3 and Figure 4 , two discharge pipes 33 are communicated with the opposite sides of the transfer box 32 respectively. This design enables the fruits received from the transfer box 32 to flow out in two directions. In practical applications, the operator can flexibly select a suitable discharge direction according to the actual site layout and the position of the subsequent processing equipment, greatly improving the adaptability of the equipment and the flexibility of use. The lower end of the discharge pipe 33 is connected with a receiving frame 34, and the receiving frame 34 is used for transporting fruits.

[0039] In order to ensure that the fruits can flow out of the transfer box 32 quickly and smoothly, the blocking plate 41 is provided with two inclined downward flow guiding surfaces, and the lower ends of the flow guiding surfaces are close to the discharge pipe 33. When the fruits roll out of the discharge chute 21 and fall onto the blocking plate 41, the flow guiding surfaces can guide the fruits to flow smoothly along the flow guiding surfaces to the discharge pipe 33, avoiding the accumulation of fruits on the blocking plate 41 and improving the discharge efficiency of the fruits.

[0040] In terms of the overall layout, both discharge pipes 33 of a transfer box 32 are arranged vertically, and the screening pipeline 20 is located between the two discharge pipes 33. This layout makes the structure of the whole device more compact, makes full use of the space, and reduces the floor area of the device. At the same time, it is convenient for the flow of fruits during the screening, material receiving and discharging processes, and improves the overall operation efficiency of the device.

[0041] In summary, through the coordinated work of each component, this fruit screening machine realizes the efficient and precise screening of fruits, and has the advantages of reasonable structure, convenient operation, high screening accuracy, strong adaptability, etc., and has broad application prospects in the fruit processing industry.

[0042] The implementation principle of a fruit screening machine according to an embodiment of the present application is as follows: Through the screening pipeline 20 that extends downward in a spiral shape on the frame 10, the fruits roll down by their own gravity, and combined with the design that the opening of the discharge chute 21 gradually increases along the spiral direction, the fruits are initially screened by size; the material receiving part 30 accurately receives the fruits rolling out from the discharge chute 21, and the distance between the two adjusting rods 70 in the receiving pipe 31 is adjustable, further improving the screening accuracy; the blocking part 40 drives the blocking plate 41 to move by the rotation of the push rod 42, which is convenient for controlling the timing of the fruit outflow, and has a stable structure; the push rod 42 is linked with the rotating rod 71 and the adjusting rod 70, so that the adjusting rod 70 slides along the side wall of the discharge chute 21 to ensure the accuracy of the distance adjustment. In the case where the discharge chute 21 already has different sizes, the setting of the adjusting rod 70 is mainly for fine adjustment; the design of the discharge pipes 33 on both sides of the transfer box 32 improves the adaptability and flexibility of the device; the guiding surface of the blocking plate 41 enables the fruits to quickly flow to the discharge pipes 33; the overall layout is compact, reducing the floor area and improving the operation efficiency; the water pipe 60 in the screening pipeline 20 can spray water to clean the fruits. When cleaning, the discharge chute 21 is blocked, and a small amount of water can wash it clean, saving water resources and reducing residues.

[0043] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A fruit screening machine, characterized in that: Including: Frame (10); Sieving pipeline (20), installed on the frame (10) and spirally extending downward along the frame (10). The upper end of the sieving pipeline (20) is provided with a feed inlet. A plurality of discharge slots (21) are formed in the pipe wall of the sieving pipeline (20). The openings of the discharge slots (21) are distributed along the spiral direction of the sieving pipeline (20), and the plurality of discharge slots (21) increase in sequence; Material receiving part (30), installed on the sieving pipeline (20) and used for communicating with the discharge slot (21); Sealing member (40), used for sealing the discharge slot (21).

2. The fruit screening machine according to claim 1, characterized in that: The material receiving part (30) includes a material receiving pipe (31) and a transfer box (32). The material receiving pipe (31) is installed between the sieving pipeline (20) and the transfer box (32). Two adjusting rods (70) are installed in the material receiving pipe (31). A spacing for fruits to pass through is left between the two adjusting rods (70). The adjusting rods (70) are located in the discharge slot (21).

3. The fruit screening machine according to claim 2, characterized in that: The sealing member (40) includes a sealing plate (41) and a push rod (42). One end of the push rod (42) is rotatably connected to the sealing plate (41). The other end of the push rod (42) extends outside the transfer box (32). The push rod (42) is threadedly installed on the transfer box (32).

4. A fruit screening machine according to claim 3, wherein: Both of the two adjusting rods (70) are connected with a rotating rod (71). The push rod (42) passes through the sealing plate (41) and is rotatably connected to the rotating rod (71). The two adjusting rods (70) approach or move away along with the rotation of the rotating rod (71). The two adjusting rods (70) respectively slide on the two side walls of the discharge slot (21). The two side walls of the discharge slot (21) extend along the radial direction of the same center of a circle. When the push rod (42) slides upward, the two adjusting rods (70) approach each other along the guidance of the side walls of the discharge slot (21).

5. A fruit screening machine according to claim 4, characterized in that: Both opposite sides of the transfer box (32) are communicated with a discharge pipe (33).

6. A fruit screening machine according to claim 5, characterized in that: Two inclined downward flow guiding surfaces are formed on the sealing plate (41). The lower ends of the flow guiding surfaces are close to the discharge pipe (33).

7. A fruit screening machine according to claim 5, characterized in that: The two discharge pipes (33) of one transfer box (32) are both vertically arranged. The sieving pipeline (20) is located between the two discharge pipes (33).

8. A fruit screening machine according to claim 1, characterized in that: A water pipe (60) is installed in the sieving pipeline (20).

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