Impurity separation device for vegetable treatment

Abstract

A kind of impurity separation device for vegetable processing, comprising driving device, further comprising: first conveying device, second transmission device and washing and blowing component, first conveying device and second conveying device cooperate to clamp and fix vegetables, so that the root of vegetables is exposed on the side of conveying device, to facilitate the treatment of dry dead skin and residual dust attached to the root by blowing and sucking component, and adjustable clamping gap can adapt to vegetables with different thickness of root, with stronger adaptability;Two groups of conveying belts running in opposite directions and having speed difference can rub the surface of vegetables through relative friction while clamping and conveying, loosen the dead skin and dust that are originally attached tightly, abandon the way of water treatment of impurities of traditional equipment, and avoid the risk of vegetable rot caused by washing vegetables with water.

Description

Technical Field

[0001] This utility model relates to the field of vegetable processing technology, and in particular to an impurity separation device for vegetable processing. Background Technology

[0002] Currently, in the initial post-harvest processing of leafy vegetables such as chives, cleaning the roots and leaf sheaths of dried, dead skin and old leaves is a crucial step in improving the appearance and quality of the product. However, existing processing methods generally suffer from low efficiency, inconsistent quality, and preservation challenges.

[0003] First, traditional processing methods primarily involve manual trimming and washing. This method relies entirely on manual labor, which is not only slow and labor-intensive, making it difficult to meet the growing demands of large-scale production; moreover, the low level of standardization results in incomplete removal of dead skin, leading to inconsistent product quality. Furthermore, manual contact easily introduces cross-contamination, and the residual moisture on the surface and roots of the chives after washing creates a humid environment conducive to microbial growth, significantly shortening the product's shelf life.

[0004] To address the issue of labor efficiency, some water-washing cleaning equipment has emerged in the market. While water-washing cleaning equipment can remove some stains, its drawbacks are also more prominent: on the one hand, it consumes a lot of water and generates a large amount of wastewater that needs to be treated; on the other hand, the residual water after washing is the main cause of rapid yellowing and rotting of vegetables such as chives. Traditional water washing methods cannot fundamentally solve the core problem of preservation. Utility Model Content

[0005] This invention provides an impurity separation device for vegetable processing, which aims to achieve efficient impurity separation of vegetables, especially those with roots such as leeks, through dry processing.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A vegetable processing impurity separation device includes a drive unit and further includes:

[0008] The first conveying device is electrically connected to the driving device and is used to convey vegetables.

[0009] The second conveying device is located above the first conveying device and forms a clamping gap for holding vegetables by cooperating with the first conveying device. The clamping gap is adjustable. The second conveying device and the first conveying device run in opposite directions and there is a speed difference between the second conveying device and the first conveying device.

[0010] The blowing and suction assembly, located on one side of the first conveying device, is used to blow away dead skin and dust from the roots of vegetables and to collect the blown-away dead skin and dust using negative pressure.

[0011] Furthermore, the first conveying device and the second conveying device are respectively provided with a first conveyor belt and a second conveyor belt, and the first conveyor belt and the second conveyor belt are covered with a padding layer.

[0012] Furthermore, the second conveying device includes a guide shaft and an elastic element. The guide shaft is located on both sides of the second conveyor belt, and the elastic element is sleeved on the guide shaft. The elastic element can be used to adjust the size of the clamping gap.

[0013] Furthermore, the second conveying device also includes a guide shaft, which is located on both sides of the second conveyor belt. A fixing ring is provided at the end of the guide shaft away from the second conveyor belt, and the fixing ring can restrict the movement direction of the guide shaft.

[0014] Furthermore, the blowing and suction assembly includes an air outlet device, which has an air inlet and an air outlet. The air inlet is connected to an air source, and the air outlet is aimed at the roots of the vegetables.

[0015] Furthermore, the blowing and suction assembly also includes a dust collection device and a vacuum device connected to the dust collection device. The collecting end of the dust collection device is aligned with the vegetable roots, and the vacuum device can provide negative pressure so that the dust collection device can collect the blown-off dead skin and dust.

[0016] Furthermore, the dust collection device includes an air inlet pipe and a dust collection bin, with the first end of the air inlet pipe forming the collection end and the second end of the air inlet pipe connected to the dust collection bin.

[0017] Furthermore, the axis of the air intake pipe is tangent to the circumference of the inner wall of the dust collection bin, which allows a cyclone to be formed inside the dust collection device.

[0018] Furthermore, the first end of the air intake pipe is a suction nozzle structure, and the cross-section of the suction nozzle structure is rectangular.

[0019] Furthermore, the vacuum device is equipped with an air intake, which is connected to a filter device. The filter device has a conical structure and can filter out fine impurities and dust.

[0020] The beneficial effects of this utility model are:

[0021] 1. This utility model proposes a vegetable processing impurity separation device, including a first conveying device for conveying vegetables, a second conveying device that cooperates with the first conveying device to clamp the vegetables, and a blowing and suction assembly for blowing away and collecting vegetable impurities. The first and second conveying devices cooperate to clamp and fix the vegetables, so that the vegetable roots are exposed on one side of the conveying device, which facilitates the blowing and suction assembly to process the dry dead skin and residual dust attached to the roots. At the same time, the adjustable clamping gap can be adapted to vegetables with roots of different thicknesses, making it more adaptable. The two sets of conveyor belts running in opposite directions and having a speed difference can also loosen the originally tightly attached dead skin and dust by relatively rubbing the surface of the vegetables while clamping and conveying them. This eliminates the traditional method of using water to treat impurities and avoids the risk of vegetables rotting due to washing them with water.

[0022] 2. This utility model proposes a vegetable processing impurity separation device, in which a first conveying device and a second conveying device are respectively provided with a first conveyor belt and a second conveyor belt, both of which are covered with a padding layer. The padding layer can adapt to deformation to evenly distribute the clamping force and avoid local pressure damage caused by point contact; and because the padding layer increases the interfacial friction coefficient, it can still maintain a non-slip clamping state between the vegetable stem and the conveyor belt even when there is a speed difference between the first and second conveyor belts, ensuring a stable output of the rubbing effect.

[0023] 3. This utility model proposes a vegetable processing impurity separation device. The second conveying device includes a guide shaft and an elastic element. The guide shaft is located on both sides of the second conveyor belt, and the elastic element is sleeved on the guide shaft. The elastic element can be used to adjust the size of the clamping gap. Under the action of the elastic element, the second conveying device can automatically float and adjust the clamping gap when the thickness of the vegetable changes, solving the technical problem that traditional rigid clamping structures cannot simultaneously ensure clamping stability and material safety. This achieves the technical effect of maintaining effective clamping force and appropriate rubbing force while ensuring that the roots of the leeks are not damaged.

[0024] 4. The vegetable processing impurity separation device proposed in this utility model has a fixing ring at the end of the guide shaft away from the second conveyor belt, which restricts the movement direction of the guide shaft. With the cooperation of the fixing ring and the guide shaft, the second conveying device can only stably displace in the vertical direction during the compression and rebound of the elastic element, avoiding uneven clamping, conveyor belt deviation, or abnormal wear of the padding layer caused by lateral offset; thus ensuring the repeatability accuracy of the clamping gap size and long-term operational reliability, and improving the equipment's adaptability to different specifications of vegetables and the consistency of impurity removal.

[0025] 5. The present invention proposes a vegetable processing impurity separation device, the blowing and suction component including an air outlet device, the air outlet device having an air inlet and an air outlet, the air inlet being connected to an air source, and the air outlet being aimed at the root of the vegetable. The air outlet of the air outlet device is clearly defined to be aimed at the root of the vegetable, so that the airflow energy can be concentrated on the target area, improving the impurity removal efficiency and directional controllability; since the air outlet device is installed on the second conveying device and floats synchronously with it, it can still maintain the blowing position accuracy during the dynamic adjustment of the clamping gap, ensuring that vegetables of different sizes obtain a consistent cleaning effect.

[0026] 6. The present invention proposes a vegetable processing impurity separation device, wherein the blowing and suction assembly further includes a dust collection device and a vacuum device connected to the dust collection device. The collecting end of the dust collection device is aligned with the vegetable root, and the vacuum device can provide negative pressure so that the dust collection device can collect the blown dead skin and dust, so that the dead skin, dust and other impurities blown off from the vegetable root will be directly sucked into the dust collection device by the negative pressure airflow and will not drift into the surrounding environment, thus avoiding the secondary adhesion of impurities to the already cleaned vegetables.

[0027] 7. The present invention proposes a vegetable processing impurity separation device in which the axis of the air inlet pipe is tangent to the circumference of the inner side wall of the dust collection bin, so that a cyclone can be formed inside the dust collection device, and centrifugal force is used to make solid impurities such as dead skin and soil separate from the airflow and settle to the bottom of the bin. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of an impurity separation device for vegetable processing according to the present invention;

[0030] Figure 2 This is a side view of an impurity separation device for vegetable processing according to the present invention;

[0031] Figure 3 This is a front view of a vegetable processing impurity separation device according to the present invention;

[0032] Figure 4 for Figure 3 Enlarged view of a portion of point A in the middle;

[0033] Figure 5 This is a schematic diagram of the first conveying device and the second conveying device of the vegetable processing impurity separation device of this utility model;

[0034] Figure 6 This is one of the schematic diagrams of the dust collection device of a vegetable processing impurity separation device according to the present invention;

[0035] Figure 7 This is a second schematic diagram of the dust collection device of a vegetable processing impurity separation device according to the present invention;

[0036] In the figure, 10 is the first conveying device; 101 is the first conveyor belt; 20 is the second conveying device; 201 is the second conveyor belt; 202 is the guide shaft; 203 is the elastic element; 204 is the fixing ring; 205 is the axial fixing seat; 206 is the optical axis cross clamp; 30 is the blowing and suction assembly; 301 is the air outlet device; 3011 is the air inlet; 3012 is the air outlet; 302 is the dust collection device; 3021 is the air inlet pipe; 30211 is the suction nozzle structure; 3022 is the dust collection bin; 303 is the vacuum device; 304 is the filter device; and 40 is the quick-release device. Detailed Implementation

[0037] The following is combined with Figures 1-7 This utility model will be described in detail.

[0038] In the initial post-harvest processing of leafy vegetables such as chives, the roots are often covered with dried old skin, soil, and debris. Traditional manual washing or water washing methods are not only inefficient and lack standardization, but also cause rapid microbial growth due to residual moisture, significantly shortening shelf life. Existing mechanical air blowing devices can only loosen floating dust and cannot thoroughly remove the old skin tightly attached to the roots, and the dust is easily scattered, causing secondary pollution. While high-pressure water washing can remove dirt, it has systemic drawbacks such as high water consumption, dirt production, difficulty in draining water, and poor preservation.

[0039] Based on this, such as Figures 1-3 The present invention provides a vegetable impurity separation device, including a driving device (not shown in the figure), and further comprising:

[0040] The first conveying device 10 is electrically connected to the driving device and is used to convey vegetables.

[0041] The second conveying device 20 is disposed above the first conveying device 10. It cooperates with the first conveying device 10 to form a clamping gap for clamping vegetables. The clamping gap is adjustable. The second conveying device 20 and the first conveying device 10 run in opposite directions, and there is a speed difference between the second conveying device 20 and the first conveying device 10.

[0042] The blowing and suction assembly 30 is located on one side of the first conveying device 10 and is used to blow away the dead skin and dust from the roots of vegetables and to collect the blown-away dead skin and dust by using negative pressure.

[0043] The first conveying device 10 is used to carry and transport the vegetables to be processed forward in the horizontal direction. As the main conveying unit, the first conveying device 10 undertakes the functions of feeding, positioning and basic support of the vegetables, and together with the second conveying device 20, it forms a clamping motion system. The clamping gap formed by the two is used to limit the stem of the vegetables and prevent them from shifting or turning over during the cleaning process.

[0044] The second conveying device 20 is a floating, non-powered transmission structure that can cooperate with the first conveying device 10 to achieve flexible clamping of vegetables. The adjustable clamping gap can adapt to vegetables with different thicknesses of roots and stems, making it more adaptable. The speed difference between the first conveying device 10 and the second conveying device 20 is generated when the vegetables are moved by the first conveying device 10 and rub against the second conveying device 20. The speed difference depends on the coefficient of friction between the second conveying device 20 and the vegetables and the speed at which the first conveying device 10 conveys the vegetables. The two sets of conveyor belts running in opposite directions and having a speed difference can also loosen the originally tightly attached dead skin and dust by rubbing the surface of the vegetables through relative friction while clamping and conveying them.

[0045] The blowing and suction assembly 30 is an integrated pneumatic cleaning unit. The blowing and suction assembly 30 does not introduce any liquid medium. It uses airflow as the medium to complete the physical removal and directional migration of impurities, thereby eliminating moisture residue and solving the problem of vegetable preservation.

[0046] This embodiment integrates flexible clamping and blow-suction co-processing functional modules into the same device, enabling impurities to be transformed from an attached state into separable solid impurities. The blow-suction component 30 completes the detachment and collection of impurities, eliminating the traditional method of treating impurities with water. This avoids the risk of vegetables rotting due to water washing and overcomes the dust escape problem caused by single air blowing.

[0047] like Figure 2 and Figure 3 As shown, the first conveying device 10 and the second conveying device 20 are respectively provided with a first conveyor belt 101 and a second conveyor belt 201, both of which are covered with a padding layer. The padding layer can adapt to deformation to evenly distribute the clamping force and avoid local pressure damage caused by point contact. Furthermore, because the padding layer increases the interfacial friction coefficient, even when there is a speed difference between the first conveyor belt 101 and the second conveyor belt 201, the vegetable stem can still maintain a non-slip clamping state between the conveyor belt and the conveyor belt, ensuring a stable output of the rubbing effect.

[0048] The first conveyor belt 101 is a plate made of food-grade material, with a width of 400mm, and runs at a speed of 0.2m per second.

[0049] The width of the second conveyor belt 201 is 75mm.

[0050] The padding layer refers to a flexible covering layer such as food-grade silicone strips, used to enhance the interfacial friction performance between the first conveyor belt 101, the second conveyor belt 201 and the vegetable stems, and to provide cushioning protection. The padding layer is fixed to the surface of the conveyor belt substrate by bonding, hot pressing, or mechanical fitting. During the conveying of vegetables, it increases the static friction coefficient of the contact surface, preventing relative slippage caused by speed differences and ensuring clamping stability. On the other hand, the padding layer can deform to avoid rigid compression that could damage the vegetable skin or cause juice leakage. Thus, while effectively loosening the dead skin at the roots, it maintains the physical integrity and commercial appearance of the vegetables.

[0051] like Figure 4 As shown, the second conveying device 20 includes a guide shaft 202 and an elastic element 203. The guide shaft 202 is located on both sides of the second conveyor belt 201, and the elastic element 203 is sleeved on the guide shaft 202. The elastic element 203 can be used to adjust the size of the clamping gap. Under the action of the elastic element 203, the second conveying device 20 can automatically float and adjust the clamping gap when the thickness of the vegetable changes, solving the technical problem that traditional rigid clamping structures cannot simultaneously ensure clamping stability and material safety; thus achieving the technical effect of stably maintaining effective clamping force and moderate rubbing force while ensuring that the roots of the chives are not damaged.

[0052] The second conveying device 20 also includes an axial fixing seat 205, which can be fixedly connected to the vegetable washing device. The guide shaft 202 is installed in the axial fixing seat 205. The axial fixing seat 205 is connected to an optical axis cross clamp 206, which can be used to connect the blowing and suction assembly 30.

[0053] The guide shaft 202 is a cylindrical shaft with its axis perpendicular to the first conveyor belt 101, and can provide vertical floating guidance for the second conveyor device 20.

[0054] The elastic element 203 is a compression spring, sleeved on the outer periphery of the guide shaft 202. The first end abuts against the axial fixing seat 205, and the second end abuts against the optical axis cross clamp 206. The compression spring provides a restoring force when the second conveying device 20 is displaced vertically due to changes in the thickness of the vegetable, dynamically maintaining the stability of the clamping gap within a set range. The size of the clamping gap is adaptively adjusted according to the thickness of the vegetable stem. When the root of the leek is thicker, the second conveying device 20 floats upward, the spring is further compressed, the elastic force increases, and the clamping pressure increases accordingly. When the root of the clamped vegetable is thinner, the spring rebounds, the clamping pressure decreases, and overpressure damage is avoided.

[0055] Each elastic element 203 has an initial compression force set to 8N, and its compression force can be adjusted within the range of 5N to 15N depending on the thickness of the vegetables placed in the clamping gap.

[0056] A retaining ring 204 is provided at the end of the guide shaft 202 away from the second conveyor belt 201. The retaining ring 204 can restrict the movement direction of the guide shaft 202. With the cooperation of the retaining ring 204 and the guide shaft 202, the second conveying device 20 can only stably displace in the vertical direction during the compression and rebound of the elastic element 203, avoiding uneven clamping, conveyor belt deviation, or abnormal wear of the padding layer caused by lateral offset; thus ensuring the repeatability accuracy of the clamping gap size and the long-term operational reliability, and improving the equipment's adaptability to different specifications of vegetables and the consistency of impurity removal.

[0057] The retaining ring 204 is a metal ring structure threaded to the end of the guide shaft 202, or a limiting boss integrally formed with the guide shaft 202. It is used to contact the upper end face of the linear bearing and form a mechanical stop when the guide shaft 202 moves upward to the limit position. The function of the retaining ring 204 is to limit the maximum upper stroke of the guide shaft 202. Its installation height is determined according to the preset clamping gap adjustment range.

[0058] like Figure 5 As shown, the blowing and suction assembly 30 includes an air outlet 301, which has an air inlet 3011 and an air outlet 3012. The air inlet 3011 is connected to an air source, and the air outlet 3012 is aimed at the root of the vegetable. The air outlet 3012 of the air outlet 301 is specifically designed to be aimed at the root of the vegetable, so that the airflow energy can be concentrated on the target area, improving the efficiency of impurity removal and the directional controllability. Since the air outlet 301 is installed on the second conveying device 20 and floats synchronously with it, it can still maintain the accuracy of the blowing position during the dynamic adjustment of the clamping gap, ensuring that vegetables of different sizes receive a consistent cleaning effect.

[0059] The air outlet 301 can be a type of air knife, used to output a directional, high-speed, and concentrated airflow to the roots of vegetables to remove dry, dead skin, old leaves, and dust adhering to the roots. The air inlet 3011 of the air outlet 301 can be a cylindrical interface, connected to an external air source, such as an air compressor, via a quick-connect fitting or hose. The air outlet 3012 can be a narrow rectangular slit structure, with its length parallel to the direction of vegetable transport. The air outlet 301 is fixed to the support of the second conveying device 20 via a cross clamp 206, and floats synchronously with the second conveying device 20, thus maintaining a stable relative position with the vegetable roots during the adjustment of the clamping gap.

[0060] The preferred length of the air knife is 100mm, the width of the air outlet 3012 is 50mm, and the working pressure is 0.6MPa.

[0061] like Figure 6 and Figure 7As shown, the blowing and suction assembly 30 also includes a dust collection device 302 and a vacuum device 303 connected to the dust collection device 302. The collecting end of the dust collection device 302 is aligned with the vegetable roots, and the vacuum device 303 can provide negative pressure so that the dust collection device 302 can collect the blown-off dead skin and dust. This ensures that the dead skin, dust, and other impurities blown off from the vegetable roots are directly sucked into the dust collection device 302 by the negative pressure airflow, preventing them from drifting into the surrounding environment and avoiding secondary adhesion of impurities to the cleaned vegetables.

[0062] The dust collection device 302 can be a closed-loop volumetric structure used to receive and temporarily store the airflow containing impurities sucked in by the front end of the blowing and suction assembly 30. Its collection end is positioned in a spatially coordinated manner with the air outlet 3012 of the blowing device in the vegetable root region, ensuring that the blown-off dead skin and dust are immediately placed within the negative pressure suction path after detaching from the vegetable surface. The dust collection device 302 has a frustum-shaped structure and can be made of food-grade stainless steel or engineering plastic, with a polished surface to reduce dust adhesion. Its function is to serve as a carrier for impurity enrichment and initial separation in the integrated blowing and suction process, cooperating with the vacuum device 303 to form the end collection unit of the negative pressure airflow circuit.

[0063] like Figure 6 As shown, the dust collection device 302 is equipped with a quick-release device 40 at the bottom. The quick-release device 40 can quickly discharge the collected impurities. No tools are required for cleaning. The entire process of disassembly, cleaning and installation can be completed quickly, which makes it convenient for operators to clean the equipment regularly, avoid the accumulation of impurities affecting the negative pressure suction effect, reduce the difficulty of daily maintenance, and reduce the time and labor costs required for maintenance.

[0064] Vacuum device 303 can refer to a power source used to establish and maintain a stable negative pressure environment inside dust collection device 302. Vacuum device 303 is a vacuum generator or vacuum pump. Vacuum device 303 can provide negative pressure so that dust collection device 302 can collect blown-off dead skin and dust. Specifically, after vacuum device 303 is activated, a pressure field lower than the ambient air pressure is formed inside dust collection device 302. This pressure field extends outward through the collection end to form an effective suction area. Under this negative pressure, dead skin and dust blown up by the blowing device enter dust collection device 302 along a preset path with the airflow. The maximum suction flow rate of vacuum device 303 is 3.5 m³ / min, and the maximum vacuum degree can reach -55 kPa.

[0065] like Figures 1-3 As shown, the dust collection device 302 includes an air inlet pipe 3021 and a dust collection bin 3022. The first end of the air inlet pipe 3021 forms a collection end, and the second end of the air inlet pipe 3021 is connected to the dust collection bin 3022.

[0066] The air inlet pipe 3021 is used to guide the dust-laden airflow drawn in by negative pressure in the blow-suction assembly 30 from the nozzle structure 30211 to the guide channel inside the dust collection bin 3022. Its first end is directly connected to the dust collection device 302 of the blow-suction assembly 30 as the collection end, and the second end extends into the dust collection bin 3022 and communicates with its internal cavity. The air inlet pipe 3021 can be a food-grade pressure-resistant hose.

[0067] The axis of the air inlet pipe 3021 is tangent to the circumference of the inner wall of the dust collection bin 3022, which allows a cyclone to be formed inside the dust collection device 302. Centrifugal force is used to cause solid impurities such as dead skin and dirt to be separated from the airflow and settle to the bottom of the bin.

[0068] The axis of the air inlet pipe 3021 is tangent to the circumference of the inner wall of the dust collection bin 3022. This means that when the air inlet pipe 3021 enters the dust collection bin 3022, the straight line of its pipe center line forms a 90-degree angle with the cylindrical surface formed by the inner wall of the dust collection bin 3022. This arrangement allows the dust-laden airflow to enter the dust collection bin 3022 at high speed at a tangential angle, thereby inducing a spiral airflow field that rotates around the central axis and moves downward within the bin. Its function is to provide centrifugal settling power for large particulate impurities, such as dead skin from vegetable roots or mud, so that they are separated from the main airflow, adhere to the bin wall, and slide down the wall to the bottom collection area under the combined action of centrifugal force and gravity.

[0069] The first end of the air intake pipe 3021 is a suction nozzle structure 30211, and the cross-section of the suction nozzle structure 30211 is rectangular.

[0070] like Figure 3 As shown, the suction nozzle structure 30211 refers to the partially flared portion formed by structural extension or shaping of the end of the air inlet pipe 3021 facing the vegetable root. This flared portion constitutes a collection inlet directly facing the impurity blowing-off area. The cross-section of the suction nozzle structure 30211 is rectangular. The rectangular suction nozzle has a larger coverage width in the horizontal direction, which can improve the lateral capture area of ​​strip-shaped impurities and avoid the escape of impurities on both sides caused by the high central flow velocity when using a circular suction nozzle, thus increasing the efficiency of impurity collection.

[0071] like Figure 6 As shown, the vacuum device 303 is provided with an air intake, which is connected to a filter device 304. The filter device 304 has a conical structure and can filter out fine impurities and dust.

[0072] The air intake is located at the center of the top of the dust collection bin 3022 of the vacuum device 303, and is used to extract the purified gas after cyclone separation. The air intake is connected to the top opening of the filter device 304 via a flange or quick-release buckle structure, and a sealing gasket is provided between the two to ensure airtightness. The filter device 304 has a conical structure, which makes the effective filtration surface area three times that of a flat plate filter of the same diameter, thereby improving dust holding capacity and airflow. The filter media of the filter device 304 is an 80-mesh stainless steel wire mesh.

[0073] A vegetable impurity separation device also includes a control device (not shown in the figure). The first transmission device, the second transmission device, and the blowing and suction assembly 30 are all electrically connected to the control device. The control device is an STM32 controller. The control device has a delayed shutdown function. After the feeding stops, the blowing and suction assembly 30 continues to run for a period of time in order to clean up the residual material.

[0074] The operating principle of the vegetable impurity separation device provided in this embodiment is as follows:

[0075] After the vegetables to be processed are arranged in an orderly manner by manual or mechanical means, the stems are fed forward into the clamping gap between the first conveying device 10 and the second conveying device 20. The drive and control devices are activated, the first conveying device 10 runs forward, and the second conveying device 20 is passively rotated in the opposite direction due to flexible pressing and friction. The two form a stable clamp and generate a slight speed difference, so that the vegetable stems are subjected to continuous and uniform radial pressure and axial rubbing force during the conveying process, which causes the dry old skin of the roots to loosen. The blowing and suction assembly 30 is activated, and the air outlet 301 sprays high-speed airflow towards the vegetable roots, vertically blowing up the loosened dead skin, soil and debris. The dust collection device 302 sucks the blown-up impurities into the integrated bucket. The dust-laden airflow then enters the cyclone separation and filtration purification process to achieve efficient interception of impurities and airflow recycling. Finally, the output vegetable roots are clean and dry, with no residual moisture and visible impurities.

[0076] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A vegetable processing impurity separation device, comprising a driving device, characterized in that, Also includes: A first conveying device is electrically connected to the driving device, and the first conveying device is used to convey vegetables; The second conveying device is disposed above the first conveying device and forms a clamping gap for clamping vegetables by cooperating with the first conveying device. The clamping gap is adjustable. The second conveying device and the first conveying device operate in opposite directions and there is a speed difference between the second conveying device and the first conveying device. The blowing and suction assembly is located on one side of the first conveying device and is used to blow away the dead skin and dust from the roots of vegetables, and to collect the blown-away dead skin and dust by using negative pressure.

2. The impurity separation device for vegetable processing as described in claim 1, characterized in that, The first conveying device and the second conveying device are respectively provided with a first conveyor belt and a second conveyor belt, and the first conveyor belt and the second conveyor belt are covered with a padding layer.

3. The impurity separation device for vegetable processing as described in claim 2, characterized in that, The second conveying device includes a guide shaft and an elastic element. The guide shaft is located on both sides of the second conveyor belt, and the elastic element is sleeved on the guide shaft. The elastic element can be used to adjust the size of the clamping gap.

4. The impurity separation device for vegetable processing as described in claim 3, characterized in that, The second conveying device further includes a guide shaft, which is disposed on both sides of the second conveyor belt. A fixing ring is provided at the end of the guide shaft away from the second conveyor belt, and the fixing ring can restrict the movement direction of the guide shaft.

5. The impurity separation device for vegetable processing as described in claim 1, characterized in that, The blowing and suction assembly includes an air outlet device, which has an air inlet and an air outlet. The air inlet is connected to an air source, and the air outlet is directed at the root of the vegetable.

6. The impurity separation device for vegetable processing as described in claim 5, characterized in that, The blowing and suction assembly also includes a dust collection device and a vacuum device connected to the dust collection device. The collecting end of the dust collection device is aligned with the root of the vegetable, and the vacuum device can provide negative pressure so that the dust collection device can collect the blown dead skin and dust.

7. The impurity separation device for vegetable processing as described in claim 6, characterized in that, The dust collection device includes an air inlet pipe and a dust collection bin. The first end of the air inlet pipe forms the collection end, and the second end of the air inlet pipe is connected to the dust collection bin.

8. The impurity separation device for vegetable processing as described in claim 7, characterized in that, The axis of the air inlet pipe is tangent to the circumference of the inner wall of the dust collection bin, which allows a cyclone to be formed inside the dust collection device.

9. The impurity separation device for vegetable processing as described in claim 7, characterized in that, The first end of the air intake pipe is a suction nozzle structure, and the cross-section of the suction nozzle structure is rectangular.

10. The impurity separation device for vegetable processing as described in claim 6, characterized in that, The vacuum device is equipped with an air intake, which is connected to a filter device. The filter device has a conical structure and can filter out fine impurities and dust.

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