A device for adding durian preservatives

Abstract

A durian preservative addition device includes a soaking device and a drying device. The soaking device includes a soaking tank filled with preservative. A first conveying mechanism is installed along the length of the soaking tank, with its ends higher than its middle. A spraying mechanism is installed above the middle of the soaking tank, spraying the durian on the first conveying mechanism with preservative. The drying device includes a second conveying mechanism arranged horizontally. A first blowing mechanism and a second blowing mechanism are arranged sequentially along the length of the second conveying mechanism. A material trough is smoothly downward at the end of the second conveying mechanism. This utility model provides a durian preservative addition device that uses a continuous conveying, soaking, and drying method, which can improve work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of fruit processing and packaging, and in particular to a device for adding a durian preservative. Background Technology

[0002] After harvesting, durians undergo a series of processes including selection, cleaning, preservation, and packaging before being sold to the market. Current preservation methods commonly use preservatives. For example, the patent application "Durian Preservative and its Durian Transportation Preservation Method" (application number "202010670079.4") mentions immersing the whole durian fruit in a large plastic bucket containing a preservative solution and then placing it on shelves according to grade to air dry with fans. In other words, soaking and drying the fruit in a preservative solution achieves preservation. However, current methods are generally done manually, which is inconvenient and inefficient due to the weight and thorns of durians. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a durian preservative adding device, which adopts a continuous conveying soaking and drying method to improve work efficiency.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A device for adding a durian preservative includes a soaking device and a drying device; The soaking device includes a soaking tank filled with a preservative. A first conveying mechanism is installed along the length of the soaking tank, with both ends higher and the middle lower. A spraying mechanism is installed above the middle of the soaking tank, which sprays preservative onto the durian on the first conveying mechanism. The drying device includes a second conveying mechanism, which is arranged horizontally. The second conveying mechanism has a first blowing mechanism and a second blowing mechanism arranged sequentially along its length. The end of the second conveying mechanism is provided with a material trough that smoothly points downwards.

[0005] Both the first conveying mechanism and the second conveying mechanism include a pair of chain conveying mechanisms, with support rods installed at intervals along the length of the chains of the chain conveying mechanisms; the first sprockets of the pair of chain conveying mechanisms are coaxial and driven by a motor.

[0006] A passive sprocket is arranged in the middle section of the first conveying mechanism. The passive sprocket is positioned lower than the first sprocket and meshes with the chain. The portions of the chain located on the left and right sides of the passive sprocket are supported by guide rails.

[0007] The liquid level of the preservative is higher than the lowest point of the upper half of the chain and lower than the highest point of the upper half of the chain.

[0008] The spraying mechanism includes a preservative tank, one end of which is connected to the soaking tank via an inlet pipe and the other end of which is connected to the pump body via an outlet pipe. The pump body is connected to the spray pipe, which is placed horizontally at the top of the soaking tank with the nozzle pointing downwards toward the first conveying mechanism.

[0009] The first blower mechanism includes a first blower, which is mounted on a first bracket. The output end of the first blower is provided with a first air knife, and the lower end of the first air knife points towards the second conveying mechanism.

[0010] The second blower mechanism includes a second blower, which is arranged above and below the second conveying mechanism. The output end of the second blower is equipped with a second air knife, which points towards the second conveying mechanism. The air force of the second blower is less than that of the first blower.

[0011] This utility model provides a device for adding a durian preservative, which has the following technical effects: 1) An immersion tank with a trapezoidal structure is used, with sloping bottom surfaces on both sides, lower in the middle and higher at both ends. The corresponding first conveying mechanism also adopts a lower-middle-high-end-ends arrangement, and the liquid level is controlled simultaneously. This allows the durian to gradually enter the preservative from above the liquid surface during the conveying process, partially immersing itself in the preservative; then it gradually detaches from the preservative and remains above the liquid surface. This process ensures that the durian is partially immersed without floating. Simultaneously, to ensure the durian is completely coated with preservative, a spraying mechanism is installed above the first conveying mechanism. This spraying mechanism sprays the portion of the durian exposed above the liquid surface, also ensuring preservative adhesion.

[0012] 2) Since durians are dripping immediately after being removed from the preservative soaking tank, a first air-blowing mechanism uses a high-powered centrifugal fan to quickly remove some of the liquid, covering the durian surface with liquid without dripping. Then, a second air-blowing mechanism, occupying nine-tenths of the length of the second conveyor mechanism, uses a low-powered centrifugal fan to slowly dry any visible small water particles on the surface during transport, allowing the durian surface to absorb the preservative and form a protective film. The low-powered centrifugal fan ensures drying while preventing the durian from dehydrating itself. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the soaking device in this utility model (first perspective).

[0015] Figure 3 This is a schematic diagram of the soaking device in this utility model (second perspective).

[0016] Figure 4 This is a schematic diagram of the structure of the first conveying mechanism in this utility model.

[0017] Figure 5 This is a partial structural schematic diagram of the first conveying mechanism in this utility model.

[0018] Figure 6 This is a schematic diagram of the spray mechanism in this utility model.

[0019] Figure 7 This is a schematic diagram of the first blower mechanism in this utility model.

[0020] Figure 8 This is a schematic diagram of the structure of the second blower mechanism in this utility model.

[0021] In the diagram: 1. Soaking device; 2. Drying device; 3. Preservative; 1.1. Soaking tank; 1.2. First conveying mechanism; 1.3. Spraying mechanism; 2.1. Second conveying mechanism; 2.2. First blower mechanism; 2.3. Second blower mechanism; 2.4. Material trough; 1.2.1. Driven shaft; 1.2.2. First sprocket; 1.2.3. Chain; 1.2.4. Support rod; 1.2.5. Base; 1.2.6. Motor; 1.2.7. Driven sprocket; 1.2.8. Guide rail; 1.2.9. Preservative tank; 1.3.1. Inlet pipe; 1.3.2. Outlet pipe; 1.3.3. Pump body; 1.3.4. Spray pipe; 1.3.5. Protective cover; 1.3.6. Opening; 1.1.1. First fan; 2.2.1. First support; 2.2.2. First air knife; 2.2.3. Second fan; 2.3.1. Second air knife; 2.3.2. Detailed Implementation

[0022] like Figures 1-3 As shown, a durian preservative adding device includes an soaking device 1 and a drying device 2. The soaking device 1 includes a soaking tank 1.1 filled with a liquid preservative 3, which has a certain depth and can be monitored by a level gauge in the soaking tank 1.1. A first conveying mechanism 1.2 is installed in the soaking tank 1.1 to convey the durian. A spraying mechanism 1.3 is installed above the soaking tank 1.1 to spray the durian with a mist of preservative from top to bottom. The drying device 2 includes a second conveying mechanism 2.1. A first blowing mechanism 2.2 is arranged at the front of the second conveying mechanism 2.1, and a second blowing mechanism 2.3 is arranged at the rear of the second conveying mechanism 2.1. During the conveying process of the durian, the preservative on the surface of the durian is gradually dried. The tail of the second conveying mechanism 2.1 is smoothly transitioned downwards to a material trough 2.4. After the durian is output by the second conveying mechanism 2.1, it is finally placed in the material trough 2.4, making it convenient for staff to remove the packaging.

[0023] like Figure 2 , Figure 4 As shown, preferably, the first conveying mechanism 1.2 and the second conveying mechanism 2.1 have largely the same structure, both including a driving shaft 1.2.1 and a driven shaft 1.2.2. The driving shaft 1.2.1 and the driven shaft 1.2.2 are mounted on a base 1.2.6, and the driving shaft 1.2.1 is driven by a motor 1.2.7. Each of the driving shaft 1.2.1 and the driven shaft 1.2.2 is provided with at least one pair of spaced-apart first sprockets 1.2.3, and chains 1.2.4 are wound around the first sprockets 1.2.1 and the driven shaft 1.2.2. Support rods 1.2.5 are installed at intervals along the length of the paired chains 1.2.4, supporting the durian as the support rods 1.2.5 are conveyed forward with the chains 1.2.4.

[0024] The first conveying mechanism 1.2 differs from the second conveying mechanism 2.1 in that a driven sprocket 1.2.8 is arranged on the base 1.2.6 of the middle section of the first conveying mechanism 1.2. The driven sprocket 1.2.8 is located in the middle of the upper and lower halves of each chain 1.2.4, meshing with the chain 1.2.4. The position of the driven sprocket 1.2.8 is lower than that of the first sprocket 1.2.3. Furthermore, each chain 1.2.4 is supported by guide rails 1.2.9, which are distributed to the left and right of the driven sprocket 1.2.8. The upper half of the chain 1.2.4 is horizontal at both the input and output ends, while the section of the chain 1.2.4 near the driven sprocket 1.2.8 slopes downwards towards the driven sprocket 1.2.8. By setting the driven sprocket 1.2.8, the chain 1.2.4 can be guided, resulting in a lower middle and higher ends. By setting guide rail 1.2.9, the chain 1.2.4 can be supported and guided.

[0025] The chain 1.2.4 of the first conveying mechanism 1.2 is lower in the middle and higher at both ends. The liquid level of the preservative 3 is higher than the lowest point of the upper half of the chain 1.2.4 and lower than the highest point of the upper half of the chain 1.2.4. As the durian is slowly conveyed forward on the first conveying mechanism 1.2, when it passes through the first half of the first conveying mechanism 1.2, it slowly enters the preservative 3 from above the liquid surface, and the durian is partially immersed in the preservative 3; when it passes through the second half of the first conveying mechanism 1.2, it slowly moves out of the preservative 3 and completely detaches from the preservative 3.

[0026] Since whole, ripe durians tend to float on the water surface or in the preservative 3, a structure with a low middle and high ends is adopted, and the liquid level of the preservative 3 is controlled so that only the lower part of the durian is submerged after entering the soaking pool 1.1, thus preventing it from floating and allowing it to be conveyed forward by the first conveying mechanism 1.2.

[0027] Since the lower part of the durian is soaked, but the upper part is not soaked in preservative 3, a spraying mechanism 1.3 is installed at the upper end of the soaking tank 1.1. The spraying mechanism 1.3 sprays preservative 3 onto the upper part of the durian, and the preservative 3 is evenly distributed on the surface of the durian in a mist.

[0028] like Figure 6 As shown, the spraying mechanism 1.3 includes a preservative tank 1.3.1. One end of the preservative tank 1.3.1 is connected to the soaking tank 1.1 via an inlet pipe 1.3.2, allowing the preservative in the soaking tank 1.1 to enter the preservative tank 1.3.1. The other end of the preservative tank 1.3.1 is connected to a pump body 1.3.4 via an outlet pipe 1.3.3, and the outlet of the pump body 1.3.4 is connected to a spray pipe 1.3.5. The spray pipe 1.3.5 is positioned horizontally above the soaking tank 1.1, with a spray nozzle installed at its lower end, pointing towards the surface of the preservative solution. The pump body 1.3.4 draws preservative into the spray pipe 1.3.5, which then sprays out a mist of preservative. When the durian passes through the spraying mechanism 1.3, the portion of the durian above the liquid surface is also covered with the mist of preservative, ensuring that the entire durian is coated with preservative.

[0029] A protective cover 1.3.6 is installed outside the nozzle 1.3.5. The protective cover 1.3.6 controls the diffusion of the mist and makes the spray more concentrated.

[0030] like Figure 3 As shown, preferably, the soaking tank 1.1 has an opening 1.1.1 on one side, and a ball valve is installed on the opening 1.1.1. The opening 1.1.1 can be connected to an external pipe to add preservative 3, and can also be used as a drain outlet to discharge preservative 3.

[0031] like Figure 7 As shown, the first blower mechanism 2.2 includes a first blower 2.2.1, which is mounted on the first bracket 2.2.2. The output end of the first blower 2.2.1 is provided with a first air knife 2.2.3, and the lower end of the first air knife 2.2.3 points towards the second conveying mechanism 2.1.

[0032] The first fan 2.2.1 consists of two sets, arranged one in front of the other. The first fan 2.2.1 is a high-power fan, mainly used for forced water removal in the initial stage to improve efficiency.

[0033] A cover 2.2.4 is provided at the lower end of each first wind knife 2.2.3. A rubber rain curtain 2.2.5 is provided at the opposite ends of the front and rear covers 2.2.4. The lower end of the rain curtain 2.2.5 is strip-shaped to facilitate the entry of durian and at the same time prevent the preservative from splashing out during the wind.

[0034] like Figure 8As shown, each of the second blowing mechanisms 2.3 includes a second blower 2.3.1, which is arranged vertically above and below the second conveying mechanism 2.1. A second air knife 2.3.2 is installed at the output end of the second blower 2.3.1, pointing towards the second conveying mechanism 2.1. The second blower 2.3.1 is a low-power blower, which slowly dries the moisture, facilitating the coating of the preservative 3 onto the surface of the durian.

[0035] The second blower mechanism 2.3 consists of multiple sets, which are arranged at intervals along the length of the second conveying mechanism 2.1.

[0036] Working principle and process: 1) After being washed, the durian is placed on the support rod 1.2.5 of the first conveying mechanism 1.2. The interval between adjacent support rods 1.2.5 is smaller than the minimum diameter of the durian, providing support for the durian. The durian is conveyed forward by the first conveying mechanism 1.2, and is first slowly partially immersed in the preservative 3. When the durian reaches the passive sprocket 1.2.8 of the first conveying mechanism 1.2, part of it is still exposed to the preservative 3. At this time, the spraying mechanism 1.3 sprays out a mist of the preservative 3; that is, the lower end of the durian is immersed and the upper end is sprayed. After the durian passes the passive sprocket 1.2.8 with the first conveying mechanism 1.2, it is gradually lifted and removed from the preservative 3.

[0037] 2) The durians that have been removed from the preservative 3 are transported to the second conveyor 2.1 and blown with a strong airflow at the first blower mechanism 2.2; then blown with a weak airflow at multiple sets of second blower mechanisms 2.3. Finally, the durians are dry and have no visible water on their surface, and fall into the material trough 2.4, where staff can carry out further processing.

Claims

1. A device for adding a durian preservative, characterized in that: Includes a soaking device (1) and a drying device (2); The soaking device (1) includes a soaking tank (1.1), which is filled with a preservative (3). A first conveying mechanism (1.2) is installed along the length of the soaking tank (1.1), with the two ends of the first conveying mechanism (1.2) being higher and the middle being lower. A spraying mechanism (1.3) is installed above the middle of the soaking tank (1.1), which sprays a preservative onto the durian on the first conveying mechanism (1.2). The drying device (2) includes a second conveying mechanism (2.1), which is arranged horizontally. The second conveying mechanism (2.1) is arranged with a first blower mechanism (2.2) and a second blower mechanism (2.3) in sequence along its length. The end of the second conveying mechanism (2.1) is provided with a material trough (2.4) that is smoothly downward.

2. The durian preservative adding device according to claim 1, characterized in that: The first conveying mechanism (1.2) and the second conveying mechanism (2.1) both include a pair of chain conveying mechanisms. Support rods (1.2.5) are installed between the chains (1.2.4) of the chain conveying mechanism along the length direction. The first sprockets (1.2.3) of the pair of chain conveying mechanisms are coaxial and driven by a motor (1.2.7).

3. The durian preservative adding device according to claim 2, characterized in that: The first conveying mechanism (1.2) has a passive sprocket (1.2.8) arranged in the middle section. The passive sprocket (1.2.8) is positioned lower than the first sprocket (1.2.3) and meshes with the chain (1.2.4). The parts of the chain (1.2.4) located on the left and right sides of the passive sprocket (1.2.8) are supported by guide rails (1.2.9).

4. The durian preservative adding device according to claim 3, characterized in that: The liquid level of the preservative (3) is higher than the lowest point of the upper half of the chain (1.2.4) and lower than the highest point of the upper half of the chain (1.2.4).

5. The durian preservative adding device according to claim 4, characterized in that: The spraying mechanism (1.3) includes a preservative tank (1.3.1), one end of which is connected to the soaking tank (1.1) via an inlet pipe (1.3.2), and the other end is connected to the pump body (1.3.4) via an outlet pipe (1.3.3). The pump body (1.3.4) is connected to the spray pipe (1.3.5), and the spray pipe (1.3.5) is placed horizontally at the upper end of the soaking tank (1.1) with the nozzle pointing downwards toward the first conveying mechanism (1.2).

6. The durian preservative adding device according to claim 5, characterized in that: The first blower mechanism (2.2) includes a first blower (2.2.1), which is mounted on a first bracket (2.2.2). The output end of the first blower (2.2.1) is provided with a first air knife (2.2.3), and the lower end of the first air knife (2.2.3) points to the second conveying mechanism (2.1).

7. The durian preservative adding device according to claim 6, characterized in that: The second blower mechanism (2.3) includes a second blower (2.3.1). The second blower (2.3.1) is arranged above and below the second conveying mechanism (2.1). The output end of the second blower (2.3.1) is provided with a second air knife (2.3.2), which points towards the second conveying mechanism (2.1). The wind force of the second blower (2.3.1) is less than that of the first blower (2.2.1).

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